Heat insulating material and its manufacturing method, heat insulating member, heat insulating product, battery and electrical equipment

Abstract

This application provides a thermal insulation material and its manufacturing method, as well as a thermal insulation member, a thermal insulation product, a battery, and an electrical device. The thermal insulation material includes a thermal insulation powder and a reinforcing fiber, and the thermal insulation powder is supported on the surface of the reinforcing fiber, with the weight ratio being 25 to 120 parts of the thermal insulation powder and 0.5 to 40 parts of the reinforcing fiber. The thermal insulation material has a high density, significantly reducing powder loss. Furthermore, because the thermal insulation powder is supported on the surface of the reinforcing fiber, the agglomeration space and agglomeration area of ​​the thermal insulation powder can be reduced, reducing the agglomeration of the thermal insulation powder and effectively improving the uniformity of the performance of the entire thermal insulation material.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority from Chinese patent application no. CN202310137934.9 filed on February 20, 2023, Chinese patent application no. CN202310137933.4 filed on February 20, 2023, and Chinese patent application no. CN202310151188.9 filed on February 22, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to thermal insulation materials, and in particular to thermal insulation materials and methods for manufacturing the same, thermal insulation members, thermal insulation products, batteries and electrical equipment. [Background technology]

[0003] Aerogel has extremely low thermal conductivity, making it an ideal insulating material. However, due to its low strength, aerogel itself typically needs to be compounded with a substrate such as glass fiber or ceramic fiber. The resulting composite material possesses the light weight and insulating properties of aerogel, as well as a certain degree of flexibility and toughness. However, the manufacturing process for aerogel and continuous fiber composites is complex and time-consuming. Currently, commonly used wet press molding requires a drying process to remove organic solvents from the product after press molding, and the evaporation of the organic solvent can easily create pores within the product. Summary of the Invention

[0004] The present application provides a thermal insulation material and a manufacturing method thereof, a thermal insulation member, a thermal insulation product, a battery, and an electrical device, which can solve the problems of existing thermal insulation materials, such as internal porosity, low density, high powder loss, and poor overall performance uniformity.

[0005] In order to solve the above technical problems, the first technical solution of the present application provides an insulating material, wherein the insulating material comprises insulating powder and reinforcing phase fibers, the insulating powder is supported on the surface of the reinforcing phase fibers, and the insulating powder is 25 to 120 parts by mass and the reinforcing phase fibers are 0.5 to 40 parts by mass.

[0006] In one embodiment, the insulating powder is supported on the surface of the reinforcement phase fibers by hydrogen bonding and / or electrostatic attraction.

[0007] In one embodiment, the surface hydroxyl group content of the heat insulating powder is 1.4 to 2.5 / nm 2 and the surface hydroxyl group content of the reinforcing phase fibers is 1 to 3 / nm 2 is.

[0008] In one embodiment, the insulating powder comprises a micron powder, the micron powder being one or more of micron fumed silica powder, micron fumed alumina powder, micron zirconia powder, micron titanium oxide powder, micron iron oxide powder, micron zirconia aerogel powder, micron silica aerogel powder, micron alumina aerogel powder, silica fume, white carbon black, diatomaceous earth, and fly ash, the particle size of the micron powder being 1 to 100 μm; and / or the insulating powder comprises a nano powder, the nano powder being one or more of nano fumed silica powder, nano fumed alumina powder, nano zirconia powder, nano titanium oxide powder, nano iron oxide powder, nano zirconia aerogel powder, nano silica aerogel powder, and nano alumina aerogel powder, the particle size of the nano powder being 5 to 50 nm.

[0009] In one embodiment, the insulating powder comprises a nanopowder, and a plurality of the nanopowder particles are aggregated to form micron-sized aggregates having a porous structure, and the voids in the aggregates are nanometer-sized.

[0010] In one embodiment, the heat insulating powder comprises nano powder and micro powder, and the nano powder is 25 to 90 parts by mass and the micro powder is 0 to 30 parts by mass.

[0011] In one embodiment, the reinforcement phase fibers comprise one or more of glass fibers, alumina fibers, and aluminum silicate fibers, the reinforcement phase fibers having a diameter of 1 to 20 μm and a length of 4 to 20 mm.

[0012] In one embodiment, the insulating material comprises the insulating powder and the reinforcing phase fibers.

[0013] In one embodiment, the thermal insulating material further comprises an infrared shading agent, the infrared shading agent being one or more of silicon carbide, titanium dioxide, zirconium oxide, and zinc oxide, or the infrared shading agent being potassium hexatitanate whiskers or silicon carbide whiskers, and the infrared shading agent is present in an amount of 0 to 60 parts by weight; and / or the thermal insulation material further comprises a getter, the getter being one or more of activated carbon, barium lithium alloy activator, calcium oxide, magnesium oxide, and silica gel, and the getter is present in an amount of 0 to 10 parts by weight; and / or The heat insulating material further comprises a desiccant, which may be one or more of anhydrous calcium chloride, soda lime, quicklime, and solid sodium hydroxide, and the desiccant is present in an amount of 0 to 10 parts by mass.

[0014] In order to solve the above technical problems, another technical solution adopted by the present application provides a manufacturing method for an insulating material, which is used to prepare the insulating material according to any one of the above claims, wherein the manufacturing method includes the steps of weighing insulating powder and reinforcing phase fibers, dispersing and mixing them in a mixing device to obtain a mixed powder, and putting the mixed powder into a mold and pressing it in a pressing device to obtain an insulating material.

[0015] In one embodiment, the step of weighing the heat insulating powder and the reinforcing phase fibers and dispersively mixing them in a mixing device to obtain a mixed powder includes treating the reinforcing phase fibers by opening and pulverizing them.

[0016] In one embodiment, the step of placing the mixed powder in a mold and press-molding it in a press device to obtain a heat insulating material further includes an evacuation operation, the evacuation operation being carried out before and during the press-molding, the evacuation operation being carried out by evacuating through a perforated evacuation plate and / or a perforated mold, the press-molding pressure being 0.5 to 20 MPa, and the holding time being 10 to 300 seconds.

[0017] In one embodiment, the step of weighing the insulating powder and the reinforcing phase fibers, dispersing and mixing them in a mixing device to obtain a mixed powder includes performing a surface treatment on the insulating powder, the surface treatment being performed by atomizing an appropriate amount of solvent onto the surface of the insulating powder, the solvent being an alcohol solvent, and the alcohol solvent includes ethanol, propanol, or butanol.

[0018] In one embodiment, the step of weighing the insulating powder and reinforcement phase fibers, dispersing and mixing them in a mixing device to obtain a mixed powder includes modifying the reinforcement phase fibers so that the surfaces of the reinforcement phase fibers have the necessary groups that crosslink with the insulating powder.

[0019] In order to solve the above technical problems, another technical solution adopted by the present application provides an insulating element, the insulating element including an insulating layer and a structural layer, the insulating layer including any one of the insulating materials according to the above items, and the structural layer being disposed on one or both sides of the insulating layer.

[0020] In one embodiment, the structural layer is a reinforcement layer, and the reinforcement layer is a hard reinforcement layer or a soft reinforcement layer, and the hard reinforcement layer is any one of a resin plate, a rubber sheet, glass, and a prepreg, and the soft reinforcement layer is a nonwoven fabric or a high-silicon cloth; or the structural layer is a reflective layer or a packaging layer, and the reflective layer is aluminum foil, aluminum foil cloth, or copper foil, and the packaging layer is any one of a PET film, a PI film, a PE film, a PEEK film, a PTFE film, a nonwoven fabric, and a high-silicon cloth.

[0021] In order to solve the above technical problems, another technical solution adopted by the present application provides an insulation product for separating a single cell or for separating a single cell from components other than the single cell, the insulation product including an insulation member and a connector, the insulation member being the insulation member described in any one of the above items, and the connector being used to connect the insulation member to the single cell or a component other than the single cell.

[0022] In one embodiment, the connector is an adhesive layer.

[0023] In order to solve the above technical problems, another technical solution adopted by the present application provides a battery, the battery including at least one battery cell and / or battery module and / or battery housing, and an insulating product, the insulating product being arranged between adjacent battery cells of the battery, and / or between the battery cell and the battery housing, and / or between the battery cell and the battery module, and / or between the battery module and the battery module, and / or between the battery module and the battery housing, wherein the insulating product is the insulating product according to any one of the above items.

[0024] In order to solve the above technical problems, another technical solution adopted by the present application provides an electric device, where the electric device includes the above-mentioned battery.

[0025] The beneficial effects of the present application compared to the prior art are as follows. The present application provides an insulating material and a manufacturing method thereof, an insulating member, an insulating product, a battery, and an electrical device. The insulating material includes an insulating powder and a reinforcing phase fiber, and the insulating powder is supported on the surface of the reinforcing phase fiber. Here, the mass proportions of the insulating powder are 25 to 120 parts and the mass proportion of the reinforcing phase fiber are 0.5 to 40 parts. By supporting the insulating powder on the surface of the reinforcing phase fiber material, the density of the insulating material is improved and the powder shedding phenomenon is significantly reduced. In addition, by supporting the insulating powder on the surface of the reinforcing phase fiber, the agglomeration space and agglomeration area of ​​the insulating powder are reduced, reducing the agglomeration of the insulating powder and effectively improving the uniformity of the overall performance of the insulating material. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is a method for manufacturing an insulating material provided in an embodiment of the present application. [Figure 2] 1 is a schematic diagram of the structure of a thermal insulation layer provided in an embodiment of the present application. [Figure 3] 1 is a schematic diagram of the structure of a heat insulating member provided in an embodiment of the present application. [Figure 4] 1 is a schematic diagram of the structure of an insulating product provided in an embodiment of the present application. [Figure 5] 1 is a schematic diagram of the structure of a battery provided in an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, the technical solutions of the embodiments of the present application will be clearly and completely described with reference to the drawings of the embodiments of the present application. It should be understood that the described embodiments are only a part of the embodiments of the present application, but not all of them. Based on the embodiments of the present application, all other embodiments that a person skilled in the art can obtain without inventive efforts fall within the scope of protection of the present application.

[0028] The terms "first," "second," and "third" in this application are used for descriptive purposes only and cannot be understood as indicating the number of technical features described. Therefore, features defined as "first," "second," and "third" can explicitly or implicitly include at least one of these features. In the description of this application, "plurality" means at least two, e.g., two, three, etc., unless otherwise clearly and specifically defined. All directional indications (up, down, left, right, front, rear, etc.) in the embodiments of this application are used only to describe the relative positional relationships between each component in a specific position (as shown in the drawings), sports situations, etc.; when the specific position changes, the directional indications also change accordingly. Furthermore, the terms "include" and "have" and their variations are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units, or may include other steps or units inherent to such process, method, product, or device.

[0029] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described with reference to the embodiment may be included in at least one embodiment of the present application. The appearance of such a combination in various places in the specification does not necessarily refer to the same embodiment, nor does it mean that the embodiments are mutually exclusive, independent, or alternative embodiments. As will be understood by those skilled in the art, both explicitly and implicitly, the embodiments described herein can be combined with other embodiments.

[0030] Hereinafter, the present application will be described in detail with reference to the accompanying drawings and embodiments.

[0031] Referring to Figures 1 to 5, Figure 1 illustrates a method for manufacturing an insulating material provided in an embodiment of the present application. Figure 2 is a schematic diagram of the structure of an insulating layer provided in an embodiment of the present application. Figure 3 is a schematic diagram of the structure of an insulating member provided in an embodiment of the present application. Figure 4 is a schematic diagram of the structure of an insulating product provided in an embodiment of the present application. Figure 5 is a schematic diagram of the structure of a battery provided in an embodiment of the present application. The present application provides an insulating material, which can be applied to the new energy battery field or the construction field and can ensure insulating performance. The insulating material includes insulating powder 1111 and reinforcing phase fibers 1112, and the insulating powder 1111 is supported on the surface of the reinforcing phase fibers 1112. Here, the insulating powder 1111 may be 25 to 120 parts by mass, and the reinforcing phase fibers 1112 may be 0.5 to 40 parts by mass. In this way, by supporting the insulating powder 1111 on the surface of the reinforcing phase fibers 1112, the denseness of the insulating material is increased and the powder loss phenomenon is significantly reduced. In addition, since the insulating powder is supported on the surface of the reinforcing phase fibers, the agglomeration space and agglomeration area of ​​the insulating powder are reduced, the agglomeration of the insulating powder is reduced, and the uniformity of the overall performance of the insulating material is effectively improved.

[0032] Those skilled in the art will understand that because the insulating powder is supported on the surfaces of the reinforcing fiber, after the insulating material is press-molded, the voids formed by the overlapping of the reinforcing fiber are filled by the insulating powder supported on the surfaces of the reinforcing fiber, reducing the volume of voids between the powders in the finished product. The insulating performance of the finished product is primarily related to the performance of the insulating powder and the reinforcing fiber itself. Because the insulating powder is uniformly dispersed on the fiber surfaces, the insulating performance of the finished product is also improved, and the press-molded finished product is less likely to crack and has excellent mechanical properties.

[0033] In a specific embodiment, the vibration powder loss rate of the insulating powder is 5% or less. Specifically, the vibration powder loss rate of the insulating powder can be measured by a vibration powder loss test. Specifically, the insulating material is subjected to a vibration screen with a vibration frequency of 1400 rad / s and an amplitude of 3 mm for 30 minutes, and the ratio of the mass of the powder dropped by the insulating material to the mass of the original insulating material is detected to determine the vibration powder loss rate of the insulating powder.

[0034] Here, the insulating powder and the reinforcing fiber material are supported by hydrogen bonds and / or electrostatic attraction. The hydroxyl group content on the insulating powder surface is 1.4 to 2.5 / nm 2 The hydroxyl group content on the surface of the reinforcing fiber is 1 to 3 / nm 2 It turns out that the surface of the reinforcing fiber contains specific groups, which exert a certain cross-linking effect with the insulating powder. During the dispersion process, the insulating powder and the groups on the surface of the reinforcing fiber can attract each other, initially supporting the insulating powder on the surface of the reinforcing fiber through electrostatic and / or hydrogen bonding, thereby uniformly dispersing the raw material and then pressing it into a molded shape. Under a certain pressure, the insulating powder and the reinforcing fiber bond tightly, further supporting the insulating powder on the surface of the reinforcing fiber. This makes the resulting insulating material dense and significantly reduces the powder shedding phenomenon. Furthermore, because the insulating powder is supported on the surface of the reinforcing fiber, the agglomeration space and agglomeration area of ​​the insulating powder are reduced, reducing the agglomeration of the insulating powder and improving the overall uniformity of performance. In a specific embodiment, the insulating powder comprises a micron powder, which may be one or more of micron fumed silica powder, micron fumed alumina powder, micron zirconium oxide powder, micron titanium oxide powder, micron iron oxide powder, micron zirconium oxide aerogel powder, micron silica aerogel powder, micron alumina aerogel powder, silica fume, white carbon black, diatomaceous earth, and fly ash. Specifically, the particle size of the micron powder is 1 to 100 μm, and preferably, the particle size of the micron powder is 5 to 50 μm. For example, the particle size of the micron powder may be any value between 5 μm, 10 μm, 20 μm, 40 μm, and 50 μm.

[0035] Compared to using only micron powders, nanopowder has higher dispersibility. Furthermore, according to particle deposition theory, the pores between nanopowder particles become smaller after deposition, resulting in a higher density product after compaction. Compared to micron particles, the powder aggregates formed by deposition of nanoparticles have a finer and more uniform microporous structure, resulting in a lower solid-state thermal conductivity of the resulting insulation material and improved insulation performance.

[0036] In a specific embodiment, it should be noted that multiple nanopowders aggregate to form micron-sized aggregates with a porous structure, and the voids within the aggregates are nanometer-sized. Those skilled in the art will appreciate that the particle size of nanoscale particles is generally 1 to 100 nm, preferably 5 to 50 nm. In this size range, the surface energy of nanoparticles is high, making aggregation very easy. Furthermore, forces such as van der Waals forces, electrostatic forces, hydrogen bonds, and ionic interactions between nanoparticles also aggregate the nanoparticles to form micron-sized aggregates with a porous structure. The voids between multiple nanopowders within the aggregates are 1 to 100 nm, preferably 5 to 50 nm. In other words, while the particle size of the aggregates measured using conventional measurement methods is micrometer-sized, it can be observed using methods such as scanning electron microscopy (SEM) and transmission electron microscopy (TEM) that they are formed by the aggregation of multiple nanoscale particles.

[0037] As can be appreciated, in specific embodiments, the insulating powder can comprise only micron powder, only nano powder, or both micron powder and nano powder. In one embodiment, the insulating powder is comprised of nano powder and micron powder, where the nano powder can be 25-90 parts by mass and the micron powder can be 0-30 parts by mass. In this way, the interaction between the micron powder and nano powder increases the density of the insulating material, while the addition of the micron powder simultaneously increases the heat resistance of the insulating material. The mixed particle size of the nano powder and micron powder improves heat resistance and provides skeletal support.

[0038] In a specific embodiment, the reinforcing phase fibers can include one or more of glass fibers, alumina fibers, and aluminum silicate fibers, and the glass fibers can include high-silica fibers or quartz fibers. Specifically, the diameter of the reinforcing phase fibers can be 1 μm to 20 μm, and the length can be 4 mm to 20 mm. For example, the diameter of the reinforcing phase fibers can be any value between 1 μm, 5 μm, 10 μm, 15 μm, and 20 μm, and the length of the reinforcing phase fibers can be any value between 4 mm, 8 mm, 12 mm, 16 mm, and 20 mm. In this application, inorganic fibers are selected over organic fibers to provide a finished product with good heat resistance and excellent mechanical properties after press molding. In other applications, organic fibers can also be selected as the reinforcing phase fibers. The diameter and length of the organic fibers are not limited to the ranges recited in this application. For example, organic fibers with a length of 40 mm can be used as the reinforcing phase fibers to produce an insulating component with tensile strength and crack resistance.

[0039] In a specific embodiment, the insulating material may be composed of insulating powder and reinforcing phase fibers. That is, the insulating material of this embodiment contains only insulating powder and reinforcing phase fibers, where the insulating powder may be 25 to 120 parts by weight and the reinforcing phase fibers may be 5 to 40 parts by weight. Of course, in other embodiments, the insulating material may contain other additives, the type and content of which can be adjusted as needed depending on the actual situation. Specifically, the content of the additives should not exceed 10% of the total weight of the insulating material, and preferably should be 5% or less.

[0040] Furthermore, in a specific embodiment, the heat-insulating material may include an infrared shaping agent. Here, the infrared shaping agent may be one or more of silicon carbide, titanium dioxide, zirconium oxide, and zinc oxide. The particle size range of the infrared shaping agent is 2 μm to 10 μm. For example, the particle size of the infrared shaping agent may be any value between 2 μm, 4 μm, 6 μm, 8 μm, and 10 μm. Alternatively, the infrared shaping agent may be potassium hexatitanate whiskers or silicon carbide whiskers. The potassium hexatitanate whiskers may have an aspect ratio of 5 to 25 and a diameter of 1.5 μm to 5 μm, while the silicon carbide whiskers may have an aspect ratio of 20 to 30 and a diameter of 0.5 μm to 2.5 μm. The surface of the infrared shaping agent may have specific groups. For example, the surface hydroxyl group content of silicon carbide is 0.015 to 0.03 mmol / g. Specifically, the amount of the infrared shading agent added can be 0 to 60 parts by mass, which can improve the heat resistance of the heat insulating material.

[0041] Furthermore, in a specific embodiment, the heat insulating material may further include a getter. The getter may be one or more of activated carbon, barium-lithium alloy activator, calcium oxide, magnesium oxide, and silica gel. Specifically, the amount of getter added may be 0 to 10 parts by mass. The heat insulating material may further include a desiccant. Here, the desiccant may be one or more of anhydrous calcium chloride, soda lime, quicklime, and solid sodium hydroxide. Specifically, the amount of desiccant added may be 0 to 10 parts by mass. In this way, adding a getter and / or a desiccant to the heat insulating material can improve the packaging effect when packaging the heat insulating material.

[0042] In a specific embodiment, the thermal insulation material can be comprised of nanopowder and reinforcement phase fibers, wherein the weight ratio of nanopowder to reinforcement phase fibers is (25-90):(0.5-40); Alternatively, the heat insulating material may be composed of nanopowder, reinforcing phase fiber, and infrared shading agent, and the ratio by mass of nanopowder:reinforcing phase fiber:infrared shading agent is (25-90):(0.5-40):(0-60); Alternatively, the insulating material may be comprised of nanopowder, reinforcing phase fiber, and micron powder, and the ratio by mass of nanopowder:reinforcing phase fiber:micron powder is (25-90):(0.5-40):(0-30); Alternatively, the thermal insulating material can be comprised of nanopowder, reinforcing phase fiber, infrared shading agent, and micron powder, wherein the weight ratio of nanopowder:reinforcing phase fiber:infrared shading agent:micron powder is (25-90):(0.5-40):(0-60):(0-30); Alternatively, the thermal insulating material can be composed of nanopowder, reinforcing phase fiber, desiccant, and getter, wherein the parts by mass of nanopowder:reinforcing phase fiber:desiccant:getter=(25-90):(0.5-40):(0-10):(0-10); Alternatively, the heat insulating material may be composed of nanopowder, reinforcing phase fiber, infrared ray shielding agent, desiccant, and getter, wherein the ratio by mass of nanopowder:reinforcing phase fiber:infrared ray shielding agent:desiccant:getter is (25-90):(0.5-40):(0-60):(0-10):(0-10); Alternatively, the thermal insulating material can be comprised of nanopowder, reinforcing phase fiber, micron powder, desiccant, and getter, wherein the parts by mass of nanopowder:reinforcing phase fiber:micron powder:desiccant:getter=(25-90):(0.5-40):(0-30):(0-10):(0-10); Alternatively, the heat insulating material can be composed of nanopowder, reinforcing fiber, infrared shading agent, micron powder, desiccant, and getter, where the parts by mass of nanopowder:reinforcing fiber:infrared shading agent:micron powder:desiccant:getter=(25-90):(0.5-40):(0-60):(0-30):(0-10):(0-10).

[0043] In the present application, the formulation of the insulating material varies depending on the operating temperature of the insulating material after press molding. Nanopowder, reinforcing fiber, and infrared shading agents play important roles in insulating performance. From the perspective of raw materials, the operating temperature of nano-fumed silica powder is below 1100°C, while that of conventional glass fiber is below 800°C. Specifically, when the operating temperature of the product is below 800°C, the raw materials are preferably nano-fumed silica powder and conventional glass fiber. When the operating temperature of the product is between 800°C and 1100°C, conventional glass fiber cannot withstand this temperature range. Therefore, high-silica fiber, alumina fiber, aluminum silicate fiber, or quartz fiber with higher heat resistance can be selected in addition to the nano-fumed silica powder. When the operating temperature is above 1100°C, high-silica fiber, alumina fiber, aluminum silicate fiber, or quartz fiber with higher heat resistance can be selected in addition to the nano-fumed silica powder.

[0044] The present application provides an insulating material, which can be applied to new energy battery and construction fields and can ensure insulating performance. The insulating material includes an insulating powder and reinforcing phase fibers, and the insulating powder is supported on the surface of the reinforcing phase fibers. Here, the insulating powder is 25 to 120 parts by mass, and the reinforcing phase fibers are 0.5 to 40 parts by mass. By supporting the insulating powder on the surface of the reinforcing phase fibers in this way, the density of the insulating material is improved and the powder shedding phenomenon is significantly reduced. Furthermore, by supporting the insulating powder on the surface of the reinforcing phase fibers, the agglomeration space and agglomeration area of ​​the insulating powder are reduced, reducing the agglomeration of the insulating powder and effectively improving the uniformity of the overall performance of the insulating material.

[0045] 1, an embodiment of the present application also provides a method for manufacturing a thermal insulating material, which is used to manufacture the thermal insulating material according to any of the above embodiments. The manufacturing method includes the following steps:

[0046] Step (S1): After weighing the heat insulating powder and the reinforcing phase fibers, they are placed in a mixer and dispersed and mixed to obtain a mixed powder.

[0047] In the specific implementation process, the raw materials are mixed using the air dispersion and sedimentation method, which results in uniform dispersion of the insulating powder and reinforcing fiber, and the reinforcing fiber is dispersed more horizontally. Air dispersion can be achieved using existing air dispersion equipment.

[0048] During the dispersion and mixing stage, certain bridges are formed between the insulating powder and the reinforcing-phase fibers, which first transfers the insulating powder to the surfaces of the reinforcing-phase fibers and distributes the mixed powder more uniformly. Then, under a certain pressure, the insulating powder and the reinforcing-phase fibers are tightly bonded together. (Mechanism: During the dispersion process, the groups on the surfaces of the insulating powder and the reinforcing-phase fibers attract each other and, through electrostatic and hydrogen bonding, agglomerate on the surfaces of the reinforcing-phase fibers to form material clusters, achieving cross-scale mixing of the insulating powder and the reinforcing-phase fibers. During the molding process, the mixed materials are subjected to pressure, which expels most of the air molecules, further shortening the distance between powder particles, increasing the number of contact points between powders, and strengthening the interaction between the material clusters. At the same time, the positions of the reinforcing-phase fibers within the agglomerates are fixed under the action of external force, and the uniformly dispersed reinforcing-phase fibers form a semi-continuous mechanical reinforcing layer, thereby improving the mechanical strength of the pressed insulation component.)

[0049] In a specific implementation process, step (S1) may specifically include the following steps:

[0050] Step (S11): Treating the reinforcing phase fibers by opening and pulverizing. In a specific implementation process, the reinforcing phase fibers in the raw material used in step (S1) are short staple fibers. The reinforcing phase fibers can be obtained by opening and pulverizing fiber clusters with lengths of 10 mm to 30 mm using a fiber opening device to form single fibers, or by opening only fiber clusters with lengths of 4 mm to 20 mm.

[0051] Of course, in other embodiments, short fibers of single fibers having a diameter of 1 μm to 20 μm and a length of 4 mm to 20 mm can also be directly purchased and used.

[0052] Step (S12): Modify the reinforcement phase fibers to provide the required groups on the surface of the reinforcement phase fibers for cross-linking with the insulating powder. In a specific implementation, the reinforcement phase fibers can be modified to provide the required groups on the surface of the reinforcement phase fibers for cross-linking with the nanopowder. Furthermore, the groups are selected as polar groups or graft groups containing polar groups, thereby more efficiently bonding the insulating powder and the reinforcement phase fiber material through at least one of hydrogen bonding and electrostatic attraction. The surfaces of the reinforcement phase fibers are treated by acid-base modification and / or oxidative modification.

[0053] Specifically, when glass fiber is used as the reinforcing fiber, acid-base treatment is first used to form depressions or micropores on the surface of the glass fiber to increase the contact area. Then, a silane coupling agent is used to infiltrate the glass fiber, imparting certain silicon hydroxyl groups to the surface of the glass fiber. These surface hydroxyl groups are then crosslinked with silicon hydroxyl nanopowder to form hydrogen bonds. (Mechanism: Acid-base etching mainly involves the reaction of acid and alkali with the alkali metal oxide or silicon oxide in the glass fiber, forming corrosion depressions or micropores on the surface of the fiber and increasing the contact area. In the surface modification of glass fiber, a certain concentration of hydrochloric acid is used to pre-treat the glass fiber, thereby generating numerous Si=OH bonds on the surface of the glass fiber, which has a certain effect on increasing the surface area and the number of reactive functional groups in the glass fiber. Then, the glass fiber is infiltrated with a silane coupling agent. The alkoxy group at one end of the silane coupling agent reacts with the hydroxyl groups on the surface of the glass fiber after hydrolysis, forming silicon-oxygen bonds. The treatment effect of the silane coupling agent is obvious, resulting in good interfacial adhesion. The modified glass fiber also has silicon hydroxyl groups on its surface.) If the reinforcing fiber is alumina fiber or aluminum silicate fiber, liquids such as potassium permanganate solution, concentrated nitric acid solution, or concentrated sulfuric acid can be used as oxidizing agents to oxidize and modify the fiber surface. (Mechanism: The fiber surface can be modified using oxidation modification technology to effectively achieve the desired surface condition. Alumina fiber or aluminum silicate fiber undergoes an oxidation reaction under acidic conditions, generating hydroxyl or carboxyl groups on the fiber surface. The surface hydroxyl and silanol groups are then crosslinked by hydrogen bonds with the nanopowder.)

[0054] Step (S13): Surface treatment is performed on the insulating powder, which includes atomizing an appropriate amount of solvent onto the surface of the insulating powder, and the solvent is an alcohol solvent, such as ethanol, propanol, or butanol.

[0055] In a specific implementation process, the insulating powder is wetted by atomization, thereby reducing the influence of static electricity and avoiding the situation where it is difficult to demold after press molding.

[0056] Step (S2): The mixed powder obtained in step (S1) is placed in a mold and press-molded in a press device to obtain a heat insulating material.

[0057] Here, the reinforcing phase fibers may specifically include reinforcing phase inorganic fibers and / or reinforcing phase organic fibers.

[0058] In a specific implementation process, step (S2) may specifically include the following steps:

[0059] Step (S21): After the mixed powder is placed in a mold, the orientation of the reinforcing phase inorganic fibers and / or the reinforcing phase organic fibers in the mixed powder is changed, and then the mixed powder is press-molded using a press device to obtain a heat insulating material.

[0060] Specifically, the orientation of the reinforcing phase fibers can be changed by processing methods such as mechanical force, electric field, or magnetic field. Here, the processing method is a needle-punching process. The needle-punching process disrupts the fiber distribution by repeatedly moving a needle up and down in a mold containing the mixed powder, changing the orientation of the reinforcing phase inorganic fibers and / or the reinforcing phase organic fibers in the mixed powder from horizontal to other directions, increasing the number of entanglement points between the fibers and improving the mechanical strength of the thermal insulation material. Conventional needle-punching processes are often used for woven fabrics such as felt and cloth. The needle-punching process of the present application uses needles to correct the fiber orientation of the mixed powder in a mold. After dispersion and before molding, the needle-punching process is added to promote the rearrangement of the reinforcing phase inorganic fibers and / or the reinforcing phase organic fibers from horizontal to other directions, increasing the number of entanglement points between the fibers and improving the overall mechanical properties of the thermal insulation material.

[0061] Step (S22): Exhaust process.

[0062] In a specific implementation process, evacuation is performed before and during press molding through a micro-perforated evacuation plate and / or a micro-perforated mold, where the press molding pressure is 0.5-20 MPa and the holding time is 10-300 seconds. After step (S2), a hydrophobic treatment of the insulating material may also be included.

[0063] In a specific implementation process, the hydrophobization treatment is carried out by immersing the insulating material obtained by the production in a hydrophobizing agent or by introducing a gas-phase hydrophobizing reagent into the insulating material obtained by the production, and the insulating material that has been hydrophobized by the immersion treatment must also be dried.

[0064] Of course, the hydrophobic treatment can be carried out before step (S2), and the mixed powder can be directly hydrophobized, so that the heat insulating material after press molding does not need to be hydrophobized again.

[0065] This application provides a method for producing an insulating material, which can be used to produce the insulating material according to any of the above embodiments. This method involves first weighing out insulating powder and reinforcing phase fibers, then dispersing and mixing them into a mixer to obtain a mixed powder. This mixed powder is then placed in a mold and pressed into a press to obtain an insulating material. The thickness of the insulating material produced by this method is controllable, allowing for different thicknesses to be produced according to actual needs. For example, the thinnest thickness is 1 mm, and it can be placed between two cells of a new energy battery to provide insulation between the cells, thereby ensuring thermal insulation performance and reducing space usage. Furthermore, the thickness of the insulating material can be controlled within a range of 20 to 30 mm, allowing it to be used to meet the necessary insulation requirements in the construction industry.

[0066] Referring to FIGS. 2 and 3, an embodiment of the present application also provides an insulating member 11. The insulating member 11 can include an insulating layer 111 and a structural layer 112. Here, the insulating layer 111 can include an insulating material according to any of the above embodiments, and the structural layer 112 is disposed on one or both sides of the insulating layer 111. In a specific embodiment, the structural layer 112 is a reinforcing layer, and specifically, the reinforcing layer can be a hard reinforcing layer or a soft reinforcing layer. Here, the hard reinforcing layer is one of a resin plate, a rubber sheet, glass, and a prepreg, and the soft reinforcing layer is a nonwoven fabric or a high-silica fiber. The material of the reinforcing layer can be either soft or hard, and the hard reinforcing layer and the insulating layer can be combined to form a plate material, with the soft reinforcing layer mainly providing a packaging effect.

[0067] Specifically, the resin sheet may be any one of epoxy resin sheet, phenolic resin sheet, polyamide resin sheet, unsaturated polyester resin sheet, polyimide resin sheet, polypropylene resin sheet, and polycarbonate resin sheet. The rubber sheet may be any one of styrene-butadiene rubber sheet, natural rubber sheet, chloroprene rubber sheet, butyl rubber sheet, nitrile rubber sheet, butadiene rubber sheet, ethylene-propylene rubber sheet, polyisoprene rubber sheet, fluororubber sheet, and silicone rubber sheet. The glass may be any one of tempered glass, semi-tempered glass, ultra-white glass, float glass, coated glass, and film-coated glass. The prepreg is primarily composed of resin and reinforcing material. The resin may be one or more of polyamide resin, thermoplastic polyester resin, polyvinyl acetal resin, polyacrylic resin, polyurethane resin, phenolic resin, epoxy resin, amino resin, polyether resin, polyimide resin, unsaturated polyester resin, and organic silicone resin. The reinforcing material may be any one of natural fiber, artificial fiber, synthetic fiber, inorganic fiber fabric, and nonwoven fabric.

[0068] In a specific embodiment, the structural layer 112 may be a reflective layer or a packaging layer. The reflective layer may be aluminum foil, aluminum foil cloth, or copper foil, while the packaging layer may be PET film, PI film, PE film, PEEk film, PTFE film, nonwoven fabric, or high-silica cloth. A reflective layer is provided on at least one side of the insulation layer to prevent heat transfer from one side of the insulation material to the other side during use. The outer surface of the insulation layer is packaged to prevent powder from falling off the surface of the insulation material during transportation and use, thereby extending its service life.

[0069] Referring to FIG. 4 , an embodiment of the present application also provides an insulation product 1, which is used to separate individual cells or separate individual cells from components other than the individual cells. Here, the insulation product 1 includes an insulation member 11 and a connector 12. The insulation member 11 is the insulation member 11 according to any of the above embodiments, and the connector 12 is used to connect the insulation member 11 to the individual cells or components other than the individual cells. Preferably, in some embodiments, the connector 12 may be an adhesive layer. Specifically, in the process of pressing the mixed powder, different molds can be used to press the powder mixture, thereby producing products with different structural forms, such as conventional parts and specially shaped parts. Different structural forms can be combined with different application scenarios, such as different temperature requirements, such as low, medium, and high temperatures.

[0070] Referring to Fig. 5, an embodiment of the present application further provides a battery. The battery includes at least one battery cell 2 and / or battery module and / or battery housing 3, and an insulating product 1. Here, the insulating product 1 is the insulating product 1 according to any of the above embodiments. The insulating product 1 can be disposed between adjacent battery cells 2 of the battery, and / or between the battery cell 2 and the battery housing 3, and / or between the battery cell 2 and the battery module, and / or between the battery module and the battery housing 3.

[0071] The embodiments of the present application also provide an electric device, which may be an electronic product such as a new energy vehicle, a computer, a mobile phone, etc. The electric device may include the battery according to the above embodiments.

[0072] The technical solutions of the present application will be clearly and completely described below in combination with the embodiments of the present application.

[0073] Examples 1-8

[0074] Examples 1-8 provide thermal insulation materials, which include nanopowder and reinforcement phase fibers, and the nanopowder is supported on the surface of the reinforcement phase fibers by hydrogen bonding and / or electrostatic attraction. The material proportions and material properties of Examples 1-8 are as follows:

[0075] JPEG2026508117000002.jpg88170

[0076] In Example 1, the hydroxyl group content on the surface of the added nano-fumed silica powder was 1.4 / nm 2 The hydroxyl group content on the surface of the added glass fiber is 2 / nm 2 In Example 2, the content of hydroxyl groups on the surface of the added nano-fumed silica powder was 2 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 1 / nm 2 In Example 3, the hydroxyl group content on the surface of the added nano-fumed alumina powder was 2.5 / nm 2 The hydroxyl group content on the surface of the added alumina fiber was 3 / nm 2 In Example 4, the hydroxyl group content on the surface of the added nanosilica aerogel powder was 1.6 / nm 2 The hydroxyl group content on the surface of the added aluminum silicate fiber was 1.5 / nm 2 In Example 5, the hydroxyl group content on the surface of the added nano-fumed silica powder was 1.4 / nm 2 The hydroxyl group content on the surface of the added aluminum silicate fiber was 2.5 / nm 2In Example 6, the hydroxyl group content on the surface of the added nano-fumed alumina powder was 2 / nm 2 The hydroxyl group content on the surface of the added glass fiber is 1 / nm 2 In Example 7, the surface hydroxyl group content of the added nano-fumed alumina aerogel powder was 2.4 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 3 / nm 2 In the example, the hydroxyl group content on the surface of the added nano-fumed silica powder was 2.5 / nm 2 The hydroxyl group content on the surface of the added glass fiber was 1.2 / nm 2 is.

[0077] The manufacturing method of the heat insulating materials of Examples 1-8 is as follows. Step (1): After weighing the nanopowder and the reinforcing phase fiber, they are put into a mixer and dispersed and mixed to obtain a mixed powder. Step (2): The mixed powder obtained in step (1) is placed in a mold and press-molded using a press to obtain a heat insulating material.

[0078] In step (1) of Example 1, the reinforcing phase fibers were single fibers obtained by directly opening 15 mm long fiber clusters. In step (2), the pressure was 0.5 MPa and the holding time was 300 seconds. Before press molding, the mixed powder was pre-evacuated through an exhaust plate and then press molded. The insulating material obtained in Example 1 was subjected to a hydrophobic treatment. This hydrophobic treatment involved immersing the produced insulating material in a hydrophobic reagent, and then drying it to obtain a hydrophobic insulating material. The insulating material obtained in Example 1 did not have a structural layer on the outside.

[0079] In step (1) of Example 2, the reinforcing phase fiber is a commercially available monofilament with a diameter of 11 μm and a length of 6 mm. In step (2), the pressure is 20 MPa and the holding time is 10 seconds. During the press molding process, an evacuation operation is performed through a micro-hole mold. The insulating material obtained in Example 2 is subjected to a hydrophobic treatment. The hydrophobic treatment involves introducing a gas-phase hydrophobic reagent into the insulating material obtained by production and leaving it to stand for a certain period of time to obtain a hydrophobic insulating material. A reinforcing layer is arranged on the outside of the hydrophobic insulating material, and the reinforcing layer is a resin plate. Two resin plates are arranged on the top and bottom sides of the hydrophobic insulating material, and the combined insulating member is obtained by hot pressing.

[0080] In step (1) of Example 3, the reinforcing phase fibers were single fibers obtained by opening and pulverizing a fiber cluster with an initial length of 30 mm, and in step (2), the pressure was 10 MPa and the holding time was 150 seconds. Before press molding, the mixed powder was pre-evacuated through a ventilation plate, and then, during the press molding process, ventilation was performed through a micro-perforated mold. The insulating material obtained in Example 3 was not further subjected to hydrophobic treatment, and no structural layer was installed on the outside of the product.

[0081] In step (1) of Example 4, the reinforcing phase fibers are single fibers obtained by opening and pulverizing a fiber cluster with an initial length of 15 mm. In step (2), the pressure is 5 MPa and the holding time is 250 seconds. Before press molding, the mixed powder is pre-evacuated using an exhaust plate and then press molded. A reflective layer is provided on the outside of Example 4, and the reflective layer is made of aluminum foil, aluminum foil cloth, or copper foil. The reflective layer is adhered to the periphery of the insulating material with an adhesive to obtain a composite insulating component.

[0082] In step (1) of Example 5, the reinforcing phase fiber is a commercially available single fiber with a diameter of 12 μm and a length of 8 mm. In step (2), the pressure is 0.5 MPa and the holding time is 300 seconds. Before press molding, the mixed powder is pre-evacuated using an exhaust plate, and then press molding is performed. The heat insulating layer obtained in Example 5 is subjected to a hydrophobic treatment. The hydrophobic treatment involves introducing a gas-phase hydrophobic reagent into the heat insulating layer obtained by manufacturing and leaving it to stand for a certain period of time to obtain a hydrophobic heat insulating material. No structural layer is provided on the outside of the heat insulating layer in Example 5.

[0083] In step (1) of Example 6, the reinforcing phase fibers were single fibers obtained by opening and pulverizing a fiber cluster with an initial length of 18 mm, and in step (2), the pressure was 10 MPa and the holding time was 180 seconds. During the press molding process, evacuation was performed through a mold with microholes. The heat insulating layer obtained in Example 6 was not subjected to hydrophobic treatment, and a reinforcing layer was placed on the outside of the obtained heat insulating layer, and the reinforcing layer was a resin plate. Two layers of resin plate were placed on the top and bottom sides of the heat insulating material, and a heat insulating component was obtained by hot press molding.

[0084] In step (1) of Example 7, the reinforcing phase fibers were single fibers obtained by opening and pulverizing fiber clusters with an initial length of 20 mm. In step (2), the pressure was 20 MPa and the holding time was 10 seconds. Before press molding, the mixed powder was pre-evacuated using a vent plate, and then evacuated using a micro-perforated mold during the press molding process. The thermal insulation layer obtained in Example 7 was then subjected to a hydrophobic treatment. The hydrophobic treatment involved immersing the manufactured thermal insulation layer in a hydrophobic reagent and drying it after the immersion treatment to obtain a hydrophobic thermal insulation layer. A reinforcing layer was placed on the outside of the hydrophobic thermal insulation layer, and the reinforcing layer was made of nonwoven fabric. The nonwoven fabric was attached to the periphery of the hydrophobic thermal insulation layer with an adhesive to obtain a thermal insulation component.

[0085] In step (1) of Example 8, the reinforcing phase fibers are single fibers obtained by directly opening a 20 mm long fiber cluster. In step (2), the pressure is 5 MPa and the holding time is 260 seconds. In Example 8, a wrapping layer is placed on the outside of the insulation layer, and the wrapping layer is a PET film. After placing the PET film on the outside of the insulation layer, the PET film is wrapped around the outside of the insulation layer using a plastic sealing device to obtain an insulation component.

[0086] The mixed powders of Examples 1 to 8 were press-molded to obtain heat insulating materials, which were then subjected to a performance test. Here, the density uniformity test method was as follows: a large block sample was cut into small blocks, the density of each was measured, and the average value was calculated, with a fluctuation range of ±30 kg / m. 3 Within this range. Heat resistance test method: A 650°C heat source is applied evenly to one side of the insulation material at 0.4 MPa, and the cold surface temperature of the insulation material is measured after 20 minutes. Here, the sample size is 110mm x 110mm, and the heat source size is 100mm x 100mm. Vibration powder loss rate test: The insulation material is treated for 30 minutes using a vibrating screen with a vibration frequency of 1400 rad / s and an amplitude of 3mm, and the powder loss rate of the insulation material (the ratio of the mass of the fallen powder to the original insulation material) is measured. The test results are as follows:

[0087] JPEG2026508117000003.jpg55170

[0088] Examples 9-15 Examples 9-15 provide thermal insulation materials containing nanopowder, reinforcing phase fibers, and an infrared shading agent. The nanopowder is supported on the surface of the reinforcing phase fibers by hydrogen bonding and / or electrostatic attraction. The material proportions and material properties of Examples 5-8 are as follows:

[0089] JPEG2026508117000004.jpg126170

[0090] In Example 9, the hydroxyl group content on the surface of the added nanosilica aerogel powder was 1.5 / nm 2The hydroxyl group content on the surface of the added aluminum silicate fiber was 2.5 / nm 2 In Example 10, the hydroxyl group content on the surface of the added nano-alumina aerogel was 2.1 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 2.6 / nm 2 In Example 11, the hydroxyl group content on the surface of the added nano-fumed silica powder was 2.2 / nm 2 The hydroxyl group content on the surface of the added high-silica fiber was 2.4 / nm 2 In Example 12, the surface hydroxyl group content of the added nano-fumed alumina powder was 1.9 / nm 2 The hydroxyl group content on the surface of the added glass fiber was 2.1 / nm 2 In Example 13, the surface hydroxyl group content of the added nano-fumed alumina powder was 1.8 / nm 2 The hydroxyl group content on the surface of the added glass fiber was 2.4 / nm 2 In Example 14, the hydroxyl group content on the surface of the added nano-fumed silica powder was 2 / nm 2 The hydroxyl group content on the surface of the added glass fiber was 1.4 / nm 2 In Example 15, the hydroxyl group content on the surface of the added nanosilica aerogel powder was 2.2 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 2.4 / nm 2 is.

[0091] The methods for producing the insulating materials of Examples 9-15 are as follows. Step (1): The nanopowder, the reinforcing phase fiber, and the infrared shading agent are weighed and placed in a mixing device to disperse and mix to obtain a mixed powder. Step (2): The mixed powder obtained in step (1) is placed in a mold and press-molded in a press to obtain a heat insulating material.

[0092] In Example 9, the reinforcing fiber in step (1) was a commercially available monofilament with a diameter of 20 μm and a length of 7 mm. In step (2), the pressure was 6 MPa and the holding time was 240 seconds. Before press molding, the mixed powder was pre-evacuated through an exhaust plate, and then press molding was performed. The heat insulating material obtained in Example 9 was not subjected to hydrophobic treatment, and no structural layer was provided on the outside of the product.

[0093] In step (1) of Example 10, the reinforcing phase fibers were single fibers obtained by opening and crushing a fiber cluster with an initial length of 30 mm, and in step (2), the pressure was 7 MPa and the holding time was 220 seconds. During the press molding process, an evacuation operation was performed through a micro-hole mold. The insulating material obtained in Example 10 was subjected to a hydrophobic treatment. The hydrophobic modification treatment involved immersing the insulating material obtained in the production process in a hydrophobic reagent, followed by drying to obtain a hydrophobic insulating material. Here, no structural layer was provided on the exterior of the product.

[0094] In step (1) of Example 11, the reinforcing phase fibers were single fibers obtained by directly opening 12 mm long fiber clusters, and in step (2), the pressure was 14 MPa and the holding time was 170 seconds. Before press molding, the mixed powder was pre-evacuated using an evacuation plate, and then evacuated using a micro-perforated mold during the press molding process. The insulating material obtained in Example 11 was not subjected to hydrophobic treatment, and no structural layer was provided on the outside of the product.

[0095] In step (1) of Example 12, the reinforcing phase fiber is a commercially available monofilament with a diameter of 6 μm and a length of 9 mm. In step (2), the pressure is 4 MPa and the holding time is 250 seconds. Before press molding, the mixed powder is pre-evacuated using an exhaust plate and then press molded. In Example 12, the mixed powder is subjected to a hydrophobic treatment, and a hydrophobic insulating material is obtained after press molding. A soft reinforcing layer is placed on the outside of the hydrophobic insulating material, and a high-silica cloth or nonwoven fabric is attached around the insulating material with an adhesive to obtain a composite insulating component.

[0096] In step (1) of Example 13, the reinforcing fiber is a commercially available monofilament with a diameter of 3 μm and a length of 4 mm. In step (2), the pressure is 6 MPa and the holding time is 240 seconds. Before press molding, the mixed powder is pre-evacuated through an exhaust plate, and then evacuated through a micro-hole mold during the press molding process. In Example 13, reinforcing layers are provided on both sides of the insulation layer, and the reinforcing layers are rubber sheets. Two rubber sheets are placed on the top and bottom of the insulation layer, and an insulation component is obtained by hot press molding.

[0097] In step (1) of Example 14, the reinforcing phase fiber is a single fiber obtained by directly opening a fiber cluster with a length of 8 mm. In step (2), the pressure is 12 MPa, the holding time is 120 seconds, and during the press molding process, an exhaust operation is performed through a micro-hole mold. The insulating layer obtained in Example 14 is subjected to a hydrophobic treatment. The hydrophobic treatment involves introducing a gas-phase hydrophobic reagent into the insulating layer obtained by manufacturing and leaving it to stand for a certain period of time to obtain a hydrophobic insulating layer. A reflective layer is provided on the outside of the hydrophobic insulating layer, and the reflective layer is aluminum foil cloth. The aluminum foil cloth is attached to the periphery of the hydrophobic insulating layer with an adhesive, thereby obtaining an insulating component.

[0098] In step (1) of Example 15, the reinforcing phase fibers were single fibers obtained by opening and pulverizing a fiber cluster having an initial length of 12 mm, and in step (2), the pressure was 5 MPa, the holding time was 250 seconds, and the mixed powder was pre-evacuated through an exhaust plate before press molding, and then press molding was performed. The heat insulating layer obtained in Example 15 did not have a structural layer.

[0099] The mixed powders of Examples 9 to 15 were press-molded to obtain heat insulating materials, which were then subjected to performance tests. Here, the density uniformity test method was as follows: a large block sample was cut into small blocks, and the density of each was measured and averaged, with a fluctuation range of ±30 kg / m. 3Within this range. Heat resistance test method: A 650°C heat source is applied evenly to one side of the insulation material at 0.4 MPa, and the cold surface temperature of the insulation material is measured after 20 minutes. Here, the sample size is 110mm x 110mm, and the heat source size is 100mm x 100mm. Vibration powder loss rate test: The insulation material is treated for 30 minutes using a vibrating screen with a vibration frequency of 1400 rad / s and an amplitude of 3mm, and the powder loss rate of the insulation material (the ratio of the mass of the fallen powder to the original insulation material) is measured. The test results are as follows:

[0100] JPEG2026508117000005.jpg50170

[0101] Examples 16-22 Examples 16-22 provide thermal insulation materials, which include nanopowder, reinforcement phase fibers, and micropowder, and the nanopowder is supported on the surface of the reinforcement phase fibers by hydrogen bonding and / or electrostatic attraction. The material proportions and material properties of Examples 16-22 are as follows:

[0102] JPEG2026508117000006.jpg119170

[0103] In Example 16, the hydroxyl group content on the surface of the added nano titanium oxide powder was 1.6 / nm 2 The hydroxyl group content on the surface of the added high-silica fiber was 2.8 / nm 2 In Example 17, the surface hydroxyl group content of the added nano-fumed alumina powder was 1.8 / nm 2 The hydroxyl group content on the surface of the added alumina fiber was 2.5 / nm 2 In Example 18, the hydroxyl group content on the surface of the added nano-fumed silica powder was 2 / nm 2 The hydroxyl group content on the surface of the added glass fiber was 1.5 / nm 2 In Example 19, the surface hydroxyl group content of the added nanosilica aerogel powder was 1.9 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 2.5 / nm 2In Example 20, the hydroxyl group content on the surface of the added nano-zirconium oxide powder was 1.8 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 2.4 / nm 2 In Example 21, the hydroxyl group content on the surface of the added nano-fumed silica powder was 2.3 / nm 2 The hydroxyl group content on the surface of the added aluminum silicate fiber was 1.8 / nm 2 In Example 22, the hydroxyl group content on the surface of the added nano-fumed silica powder was 1.6 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 2 / nm 2 The methods for producing the heat insulating materials of Examples 16-22 are as follows.

[0104] The heat insulating materials of Examples 16 to 22 were produced as follows. Step (1): The nanopowder, reinforcing phase fiber, and micropowder are weighed and placed in a mixing device to disperse and mix to obtain a mixed powder. Step (2): The mixed powder obtained in step (1) is placed in a mold and press-molded using a press molding device to obtain a heat insulating material.

[0105] In Example 16, the reinforcing fiber in step (1) was a commercially available single fiber with a diameter of 9 μm and a length of 8 mm. In step (2), the pressure was 12 MPa and the holding time was 120 seconds. Before press molding, the mixed powder was pre-evacuated using an evacuation plate, and then evacuated through a micro-hole mold during the press molding process. The heat insulating material obtained in Example 16 was not subjected to a hydrophobic treatment, and no structural layer was provided on the outside of the product.

[0106] In step (1) of Example 17, the reinforcing phase fibers were single fibers obtained by opening and pulverizing a fiber cluster with an initial length of 30 mm. In step (2), the pressure was 6 MPa and the holding time was 240 seconds. Before press molding, the mixed powder was pre-evacuated using an exhaust plate and then press molded. The insulating material obtained in Example 17 was not subjected to hydrophobic treatment, and a hard reinforcing layer was disposed on the outside of the obtained insulating material. Two hard reinforcing layers were disposed on the upper and lower sides of the insulating material, and the insulating component was obtained by hot pressing. The material of the hard reinforcing layer was one of a resin plate, a rubber sheet, glass, and a prepreg.

[0107] In step (1) of Example 18, the reinforcement phase fibers were single fibers obtained by directly opening a 10 mm long fiber cluster, and in step (2), the pressure was 8 MPa and the holding time was 130 seconds. During the press molding process, evacuation was performed through a micro-perforated mold. The heat insulating material obtained in Example 18 was not subjected to a hydrophobic treatment, and no structural layer was provided on the outside of the product.

[0108] In step (1) of Example 19, the reinforcing phase fibers were single fibers obtained by opening and pulverizing a fiber cluster with an initial length of 15 mm, and in step (2), the pressure was 9 MPa and the holding time was 110 seconds. Before press molding, the mixed powder was pre-evacuated using an exhaust plate and then press molded. The insulating material obtained in Example 19 was subjected to a hydrophobic treatment. The hydrophobic treatment involves introducing a gas-phase hydrophobic reagent into the insulating material obtained by production and leaving it to stand for a certain period of time to obtain a hydrophobic insulating material. No structural layer was installed on the outside of the hydrophobic insulating material.

[0109] In step (1) of Example 20, the reinforcing phase fibers are single fibers obtained by directly opening a 9 mm long fiber cluster. In step (2), the pressure is 3 MPa and the holding time is 270 seconds. Before press molding, the mixed powder is pre-evacuated using an exhaust plate, and then press molded. In Example 20, a reinforcing layer is provided on both sides of the insulating layer, and the reinforcing layer is made of glass. Two layers of glass are placed on the top and bottom of the insulating layer, and then the insulating component is obtained by hot press molding.

[0110] In step (1) of Example 21, the reinforcing phase fiber is a commercially available monofilament having a diameter of 9 μm and a length of 6 mm. In step (2), the pressure is 5 MPa and the holding time is 250 seconds. During the press molding process, an evacuation operation is performed through a micro-hole mold. The heat insulating layer obtained in Example 21 is subjected to a hydrophobic treatment. The hydrophobic treatment involves introducing a gas-phase hydrophobic reagent into the heat insulating layer obtained by manufacturing and leaving it to stand for a certain period of time to obtain a hydrophobic heat insulating layer. A packaging layer is placed on the outside of the hydrophobic heat insulating layer, and the packaging layer is a PI film. The PI film is placed on the outside of the hydrophobic heat insulating layer, and then the PI film is wrapped around the outside of the hydrophobic heat insulating layer using a plastic sealing device to obtain a heat insulating member.

[0111] In step (1) of Example 22, the reinforcing phase fibers were single fibers obtained by opening and pulverizing fiber clusters with an initial length of 15 mm, and in step (2), the pressure was 8 MPa and the holding time was 140 seconds. Before press molding, the mixed powder was pre-evacuated through an exhaust plate, and then evacuated through a micro-hole mold during the press molding process. In Example 22, a reflective layer was provided on the outside of the thermal insulation layer, and the reflective layer was copper foil. The copper foil was attached to the periphery of the thermal insulation layer with an adhesive, thereby obtaining a thermal insulation component.

[0112] The mixed powders of Examples 16 to 22 were press-molded to obtain heat insulating materials, which were then subjected to performance tests. Here, the density uniformity test method was as follows: a large block sample was cut into small blocks, and the density of each was measured and averaged, with a fluctuation range of ±30 kg / m. 3Within this range. Heat resistance test method: A 650°C heat source is applied evenly to one side of the insulation material at 0.4 MPa, and the cold surface temperature of the insulation material is measured after 20 minutes. Here, the sample size is 110mm x 110mm, and the heat source size is 100mm x 100mm. Vibration powder loss rate test: The insulation material is treated for 30 minutes using a vibrating screen with a vibration frequency of 1400 rad / s and an amplitude of 3mm, and the powder loss rate of the insulation material (the ratio of the mass of the fallen powder to the original insulation material) is measured. The test results are as follows:

[0113] JPEG2026508117000007.jpg49170

[0114] Examples 23-29 Examples 23-29 provide thermal insulation materials. The thermal insulation materials include nanopowder, reinforcement phase fibers, infrared shading agents, and micropowder, and the nanopowder is supported on the surface of the reinforcement phase fibers by hydrogen bonding and / or electrostatic attraction. The material proportions and material properties of Examples 23-29 are as follows:

[0115] JPEG2026508117000008.jpg161170

[0116] In Example 23, the hydroxyl group content on the surface of the added nano-fumed silica powder was 2 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 2 / nm 2 In Example 24, the hydroxyl group content on the surface of the added nano-iron oxide powder was 1.6 / nm 2 The hydroxyl group content on the surface of the added alumina fiber was 2.4 / nm 2 In Example 25, the hydroxyl group content on the surface of the added nanosilica aerogel powder was 2.2 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 1.8 / nm 2 In Example 26, the hydroxyl group content on the surface of the added nano-zirconium oxide powder was 1.7 / nm 2 The hydroxyl group content on the surface of the added glass fiber was 2.4 / nm 2In Example 11, the hydroxyl group content on the surface of the added nano titanium oxide powder was 1.9 / nm 2 The hydroxyl group content on the surface of the added high-silica fiber was 2.9 / nm 2 In Example 12, the hydroxyl group content on the surface of the added nano-zirconium oxide aerogel powder was 1.5 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 2.1 / nm 2 In Example 13, the hydroxyl group content on the surface of the added nano silicon dioxide powder was 2.3 / nm 2 The hydroxyl group content on the surface of the added aluminum silicate fiber was 2 / nm 2 is.

[0117] The methods for producing the insulating materials of Examples 23-29 are as follows. Step (1): Weigh out the nanopowder, reinforcing phase fiber, infrared shading agent, and micron powder, and then disperse and mix them in a mixing device to obtain a mixed powder. Step (2): The mixed powder obtained in step (1) is placed in a mold and press-molded in a press to obtain a heat insulating material.

[0118] In Example 23, the reinforcing fiber in step (1) was a commercially available monofilament having a diameter of 6 μm and a length of 8 mm, and the pressure in step (2) was 5 MPa and the holding time was 210 seconds. During the press molding process, evacuation was performed through a micro-perforated mold. The insulating material obtained in Example 23 was no longer subjected to hydrophobic treatment, and the outer surface of the product no longer had a structural layer.

[0119] In step (1) of Example 24, the reinforcing phase fibers were single fibers obtained by opening and pulverizing fiber clusters with an initial length of 10 mm. In step (2), the pressure was 8 MPa and the holding time was 130 seconds. Before press molding, the mixed powder was pre-evacuated using an exhaust plate and then press molded. The insulating material obtained in Example 24 was packaged, and the outside of the insulating layer was wrapped with a plastic sealing device or adhesive to obtain a composite insulating component. The material of the packaging layer was one of PET film, PI film, PE film, PEEK film, PTFE film, nonwoven fabric, and high-silica fiber.

[0120] In step (1) of Example 25, the reinforcing fiber was a single fiber obtained by directly opening a 13 mm long fiber cluster, and in step (2), the pressure was 15 MPa and the holding time was 80 seconds. Before press molding, the mixed powder was pre-evacuated through an exhaust plate and then press molded. The insulating material obtained in Example 25 was no longer subjected to hydrophobic treatment, and the outer surface of the product was not provided with a structural layer.

[0121] In step (1) of Example 26, the reinforcing phase fibers were single fibers obtained by opening and pulverizing 9 mm long fiber clusters. In step (2), the pressure was 5 MPa and the holding time was 250 seconds. Before press molding, the mixed powder was pre-evacuated at a high evacuation rate, and then evacuated through a micro-hole die during the press molding process.

[0122] In step (1) of Example 27, the reinforcing fiber is a single fiber obtained by opening and crushing a fiber cluster with an initial length of 30 mm, and in step (2), the pressure is 7 MPa and the holding time is 220 seconds. Before press molding, the mixed powder is pre-evacuated using an exhaust plate and then press molded. In Example 27, reinforcing layers are provided on both sides of the insulation layer, and the reinforcing layers are prepregs. Two layers of prepreg are placed on the top and bottom of the insulation layer, and an insulation component is obtained by hot press molding.

[0123] In step (1) of Example 28, the reinforcing phase fibers were single fibers obtained by directly opening 10 mm long fiber clusters, and in step (2), the pressure was 6 MPa and the holding time was 240 seconds. Before press molding, the mixed powder was pre-evacuated using an exhaust plate, and then evacuated through a micro-hole mold during the press molding process. No structural layer was provided on the outside of the insulating layer of Example 28. The insulating layer obtained in Example 12 was subjected to a hydrophobic treatment. The hydrophobic treatment involves introducing a gas-phase hydrophobic reagent into the insulating layer obtained by production and leaving it to stand for a certain period of time to obtain a hydrophobic insulating material.

[0124] In step (1) of Example 29, the reinforcing phase fiber is a commercially available monofilament having a diameter of 7 μm and a length of 9 mm. In step (2), the pressure is 4 MPa and the holding time is 260 seconds. During the press molding process, an evacuation operation is performed through a micro-perforated mold. In Example 29, a wrapping layer is provided on the outside of the insulating layer, and this wrapping layer is a high-silica cloth. The high-silica cloth is adhered to the periphery of the insulating layer with an adhesive to obtain an insulating member.

[0125] The mixed powder of Example 23-19 was press-molded to obtain a heat insulating material, which was then subjected to a performance test. Here, the density uniformity test method was as follows: a large block sample was cut into small blocks, and the density of each was measured and averaged, with a fluctuation range of ±30 kg / m. 3 Within this range. Heat resistance test method: A 650°C heat source is applied evenly to one side of the insulation material at 0.4 MPa, and the cold surface temperature of the insulation material is measured after 20 minutes. Here, the sample size is 110mm x 110mm, and the heat source size is 100mm x 100mm. Vibration powder loss rate test: The insulation material is treated for 30 minutes using a vibrating screen with a vibration frequency of 1400 rad / s and an amplitude of 3mm, and the powder loss rate of the insulation material (the ratio of the mass of the fallen powder to the original insulation material) is measured. The test results are as follows:

[0126] JPEG2026508117000009.jpg49170

[0127] Examples 30-36 Examples 30-36 provide heat insulating materials prepared by pressing mixed powders. The mixed powders include nanopowder, reinforcing phase fibers, infrared shaping agents, micropowder, getter, and desiccant. The nanopowder is supported on the surface of the reinforcing phase fibers by hydrogen bonding and / or electrostatic attraction. The material ratios and material properties of Examples 30-36 are as follows:

[0128] JPEG2026508117000010.jpg198170

[0129] In Example 30, the hydroxyl group content on the surface of the added nano-fumed alumina powder was 1.4 / nm 2 The hydroxyl group content on the surface of the added glass fiber is 3 / nm 2 In Example 31, the hydroxyl group content on the surface of the added nano-zirconia aerogel powder was 2.4 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 2.6 / nm 2 In Example 32, the hydroxyl group content on the surface of the added nano-fumed silica powder was 1.8 / nm 2 The hydroxyl group content on the surface of the added quartz fiber was 2.2 / nm 2 In Example 33, the hydroxyl group content on the surface of the added nano-fumed silica powder was 1.2 / nm 2 The hydroxyl group content on the surface of the added glass fiber was 1.9 / nm 2 The hydroxyl group content on the surface of the nano-fumed silica powder added in Example 34 was 2.1 / nm 2 The hydroxyl group content on the surface of the added aluminum silicate fiber was 2.4 / nm 2 The hydroxyl group content on the surface of the nano-fumed alumina powder added in Example 35 was 1.6 / nm 2 The hydroxyl group content on the surface of the added alumina fiber was 2.1 / nm 2 The hydroxyl group content on the surface of the nano-iron oxide powder added in Example 36 was 1.7 / nm 2 The surface hydroxyl group content of the added glass fiber was 2.4 / nm 2 is.

[0130] The heat insulating materials of Examples 30 to 36 were prepared as follows. Step (1): Nanopowder, reinforcing phase fiber, infrared ray shielding agent, micropowder, getter and desiccant are weighed and placed in a mixer to disperse and mix to obtain a mixed powder. Step (2): The mixed powder obtained in step (1) is placed in a mold and press-molded using a press to obtain a heat insulating material.

[0131] Here, the reinforcing phase fibers in step (1) of Example 30 were single fibers obtained by opening and pulverizing a fiber cluster having an initial length of 15 mm, and the pressure in step (2) was 2 MPa, the holding time was 280 seconds, and evacuation was performed through a micro-hole mold during the press molding process.

[0132] In step (1) of Example 31, the reinforcing phase fiber was a commercially available monofilament having a diameter of 6 μm and a length of 4 mm. In step (2), the pressure was 10 MPa and the holding time was 190 seconds. Before pressing, the mixed powder was pre-evacuated through an evacuation plate, and then evacuated through a micro-perforated die during the pressing process.

[0133] In Example 32, in step (1), the reinforcing phase fibers were single fibers obtained by opening and pulverizing a fiber cluster having an initial length of 20 mm, and in step (2), the pressure was 20 MPa and the holding time was 10 seconds. Before press molding, the mixed powder was pre-evacuated through an exhaust plate, and then evacuated through a micro-hole die during the press molding process.

[0134] In Example 33, in step (1), the reinforcing phase fibers were single fibers directly obtained by opening a 20 mm long fiber cluster, and in step (2), the pressure was 10 MPa and the holding time was 180 seconds. Before press molding, the mixed powder was pre-evacuated through an exhaust plate, and then evacuated through a micro-hole die during the press molding process.

[0135] In step (1) of Example 34, the reinforcing phase fibers were single fibers obtained by opening and pulverizing a fiber cluster having an initial length of 23 mm. In step (2), the pressure was 18 MPa and the holding time was 60 seconds. Before press molding, the mixed powder was pre-evacuated through an exhaust plate and then press molded.

[0136] In Example 35, the reinforcing fiber was a commercially available monofilament having a diameter of 1 μm and a length of 4 mm. The pressure in step (2) was 6 MPa, and the holding time was 160 seconds. Before press molding, the mixed powder was pre-evacuated by an exhaust plate, and then press molding was performed.

[0137] In step (1) of Example 36, the reinforcing phase fibers were single fibers obtained by opening and pulverizing a fiber cluster having an initial length of 15 mm. In step (2), the pressure was 8 MPa and the holding time was 200 seconds. During the press molding process, evacuation was performed through a micro-hole mold.

[0138] The mixed powders in Examples 30 to 36 contain getters and desiccants. Depending on the raw materials selected, the product is encapsulated. That is, a packaging layer is placed on the outside of the insulating layer, and the outside of the insulating layer is wrapped with a plastic sealing device or adhesive to obtain the composite insulating component. The packaging layer material is one of PET film, Pi film, PE film, PPEEK film, PTFE film, nonwoven fabric, and high-silica cloth. In Example 18, the insulating material is hydrophobized by introducing a gas-phase hydrophobic agent into the insulating material obtained by production and leaving it to stand for a certain period of time to obtain a hydrophobic insulating material. The outside of the hydrophobic insulating material is wrapped.

[0139] The insulating materials produced in Examples 30-36 are packaged because getters and desiccants are added to the raw materials. Because a packaging layer is present, the vibration powder loss rate of the insulating material after packaging is 0. The vibration powder loss rate is not tested in this area. For insulating materials obtained by press molding the mixed powder, other performance tests are carried out. Here, the density uniformity test method is as follows: a large block sample is cut into small blocks, the density of each is measured, and the average value is calculated, with a fluctuation range of ±30 kg / m 3 Heat resistance test method: At 0.4 MPa, a heat source of 650°C is applied evenly to one side of the insulation material, and the cold surface temperature of the insulation material is measured after 20 minutes. Here, the sample size is 110 mm x 110 mm, and the heat source size is 100 mm x 100 mm. The test results are as follows:

[0140] JPEG2026508117000011.jpg45170

[0141] In the above embodiment, the hydrophobizing reagent used includes one or more of hydrophobic alkoxysilane, hexamethyldisiloxane, and hexamethyldisilazane. Specifically, the hydrophobizing reagent includes one or more of methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, chloropropyltriethoxysilane, chloropropyltrimethoxysilane, chloropropylmethyldimethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, trimethylchlorosilane, hexamethyldisiloxane, and hexamethyldisilazane. The gas-phase hydrophobizing reagent used is obtained by heating and gasifying a liquid hydrophobizing reagent.

[0142] Examples 37-40 Examples 37-40 provide thermal insulation materials, which include nanopowder and a reinforcing phase material, where the material proportions and material properties of Examples 37-40 are as follows:

[0143] JPEG2026508117000012.jpg71170

[0144] The heat insulating materials of Examples 37 to 40 were produced by the following method. Step (1): Weigh out each raw material component, and then use atomization to attach an appropriate amount of ethanol to the surface of the nanopowder. Then, use airflow dispersion and sedimentation to disperse and mix the raw materials to obtain a mixed powder. Step (2): The mixed powder is placed in a mold, and a needle is used to repeatedly move the mixed powder up and down in the mold to disrupt the fiber distribution and change the reinforcing phase inorganic fibers and / or reinforcing phase organic fibers in the mixed powder from horizontal to other directions, and then the mixture is press-molded in a press to obtain a heat insulating material.

[0145] Here, the reinforcing inorganic fiber in the raw material of step (1) of Example 37 was a commercially available single fiber with a diameter of 8 μm and a length of 10 mm. The molding pressure in step (2) was 10 MPa, the holding time was 150 seconds, and the mixed powder was pre-evacuated using an exhaust plate before press molding. The insulating material obtained in Example 37 was subjected to a hydrophobic treatment. The hydrophobic treatment involved immersing the manufactured insulating material in a hydrophobic reagent, followed by drying to obtain a hydrophobic insulating material. No structural layer was provided on the outside of the hydrophobic insulating material.

[0146] The reinforcing inorganic fibers in the raw material of step (1) in Example 38 were single fibers obtained by opening and crushing fiber clusters with an initial length of 10 mm. In step (2), the molding pressure was 0.5 MPa, the holding time was 300 seconds, and the air was evacuated through a micro-hole mold during the press molding process. The insulating material obtained in Example 38 was packaged, and the outside of the insulating material was wrapped with a plastic sealing device or adhesive to obtain a packaged insulating component. The packaging layer material was one of PET film, PI film, PE film, PEEK film, PTFE film, nonwoven fabric, and high-silica fiber.

[0147] In Example 39, in step (1), the reinforcing phase inorganic fibers in the raw material were single fibers formed by directly opening 12 mm long fiber clusters. In step (2), the molding pressure was 20 MPa and the holding time was 10 seconds. Before press molding, the mixed powder was pre-evacuated using an exhaust plate, and then press molding was performed. The insulating material obtained in Example 39 was subjected to a hydrophobization treatment. This hydrophobization treatment involves introducing a gas-phase hydrophobizing agent into the insulating material obtained by production and leaving it to stand for a certain period of time to obtain a hydrophobic insulating material. A soft reinforcing layer was placed on the outside of the hydrophobic insulating material, and a high-silica cloth or nonwoven fabric was attached to the periphery of the insulating material with an adhesive to obtain a composite insulating component.

[0148] In step (1) of Example 40, the reinforcing phase inorganic fibers in the raw material were single fibers obtained by opening and pulverizing fiber clusters with an initial length of 15 mm, and in step (2), the molding pressure was 5 MPa and the holding time was 220 seconds. During the press molding process, evacuation was performed through a micro-perforated mold. The insulating material obtained in Example 40 was no longer subjected to hydrophobic treatment, and the product no longer had a structural layer on the outside.

[0149] The mixed powders of Examples 37-40 were press-molded to obtain heat insulating materials, which were then subjected to performance tests. Here, the density uniformity test method was as follows: a large block sample was cut into small blocks, and the density of each was measured and averaged, with a fluctuation range of ±30 kg / m. 3 Within this range. Heat resistance test method: A 650°C heat source is applied evenly to one side of the insulation material at 0.4 MPa, and the cold surface temperature of the insulation material is measured after 20 minutes. Here, the sample size is 110mm x 110mm, and the heat source size is 100mm x 100mm. Vibration powder loss rate test: The insulation material is treated for 30 minutes using a vibrating screen with a vibration frequency of 1400 rad / s and an amplitude of 3mm, and the powder loss rate of the insulation material (the ratio of the mass of the fallen powder to the original insulation material) is measured. The test results are as follows:

[0150] JPEG2026508117000013.jpg35170

[0151] Examples 41-43 Examples 41-43 provide thermal insulation materials, which include nanopowder, a reinforcing phase material, and an infrared shading agent, where the material proportions and material properties of Examples 41-43 are as follows:

[0152] JPEG2026508117000014.jpg88170

[0153] The heat insulating materials of Examples 41 to 43 were prepared as follows. Step (1): Weigh out each raw material component, and then attach an appropriate amount of propanol to the surface of the nanopowder by atomization. Disperse and mix the raw materials by airflow dispersion and sedimentation to obtain a mixed powder. Step (2): The mixed powder is placed in a mold, and a needle is used to repeatedly move up and down in the mold containing the mixed powder to disrupt the fiber distribution and change the reinforcing phase fibers in the mixed powder from horizontal to other directions, and then the insulating material is obtained by pressing using a press device.

[0154] In Example 41, the reinforcing inorganic fibers in the raw materials used in step (1) were single fibers obtained by opening and pulverizing fiber clusters with an initial length of 18 mm. In step (2), the molding pressure was 8 MPa and the holding time was 180 seconds. The mixed powder was pre-evacuated using an exhaust plate before press molding, and then evacuated using a micro-perforated mold during the press molding process. The insulating material obtained in Example 41 was subjected to a hydrophobization treatment. The hydrophobization treatment involves introducing a gas-phase hydrophobizing agent into the insulating material obtained by production and leaving it to stand for a certain period of time to obtain a hydrophobic insulating material. The hydrophobic insulating material was then packaged, and the exterior of the hydrophobic insulating layer was wrapped with a plastic sealing device or adhesive to obtain a packaged insulating member. The packaging layer material was one of PET film, PI film, PE film, PEEK film, PTFE film, nonwoven fabric, and high-silica fiber.

[0155] In Example 42, the reinforcing inorganic fibers in the raw material of step (1) were single fibers obtained by directly opening 13 mm long fiber clusters. In step (2), the molding pressure was 6 MPa and the holding time was 200 seconds. Before press molding, the mixed powder was pre-evacuated using an exhaust plate, and then press molding was performed. A hard reinforcing layer was provided on the outside of the insulating material obtained in Example 42, and two hard reinforcing layers were placed on both the top and bottom sides of the insulating layer. The insulating component was then obtained by hot pressing. The material of the hard reinforcing layer was one of a resin plate, a rubber sheet, glass, and a prepreg.

[0156] The reinforcing phase inorganic fiber in the raw material of step (1) in Example 43 was a commercially available single fiber having a diameter of 6 μm and a length of 11 mm. The molding pressure in step (2) was 15 MPa, the holding time was 80, and an evacuation operation was performed through a micro-hole mold during the press molding process. The heat insulating material obtained in Example 43 was not subjected to a hydrophobic treatment, and no structural layer was disposed on the outside of the product.

[0157] JPEG2026508117000015.jpg30170

[0158] Examples 44-46 Examples 44-46 provide thermal insulation materials, which include nanopowder, reinforcement phase material, and micron powder, with the following material proportions and properties:

[0159] JPEG2026508117000016.jpg84170

[0160] The insulating materials of Examples 44-46 were prepared as follows. Step (1): Weigh each raw material component, and attach an appropriate amount of butanol to the surface of the nanopowder using the atomization method. Disperse and mix the raw materials using the airflow dispersion and sedimentation method to obtain a mixed powder. Step (2): The mixed powder is placed in a mold, and a needle is used to repeatedly move up and down in the mold containing the mixed powder to disrupt the fiber distribution, causing the reinforcing phase fibers in the mixed powder to change from horizontal to another direction, and then the mixture is press-molded in a press to obtain a thermal insulating material.

[0161] Here, the reinforcing inorganic fibers in the raw materials used in step (1) of Example 44 were single fibers obtained by opening and pulverizing fiber clusters with an initial length of 15 mm. In step (2), the molding pressure was 18 MPa and the holding time was 40 seconds. Prior to press molding, the mixed powder was pre-evacuated using an exhaust plate, and then evacuated through a micro-hole mold during the press molding process. The insulating material obtained in Example 44 was subjected to a hydrophobization treatment. The hydrophobization treatment involves introducing a gas-phase hydrophobizing agent into the insulating material obtained by production and leaving it to stand for a certain period of time to obtain a hydrophobic insulating material. No structural layer was provided on the exterior of the hydrophobic insulating material.

[0162] In Example 45, the reinforcing inorganic fibers in the raw material of step (1) were single fibers obtained by directly opening 20 mm long fiber clusters. In step (2), the molding pressure was 16 MPa, the holding time was 60 seconds, and the air was evacuated through a micro-hole mold during the press molding process. A reflective layer was installed on the outside of Example 45, and the reflective layer was aluminum foil, aluminum foil cloth, or copper foil. The reflective layer was attached to the periphery of the insulating layer with an adhesive, resulting in a composite insulating component.

[0163] In step (1) of Example 46, the reinforcing phase inorganic fiber in the raw material was a commercially available monofilament having a diameter of 4 μm and a length of 6 mm. In step (2), the molding pressure was 10 MPa, the holding time was 150 seconds, and the mixed powder was pre-evacuated using an exhaust plate before press molding, and then evacuated through a micro-hole mold during the press molding process. The heat insulating material obtained in Example 46 was not subjected to a hydrophobic treatment, and no structural layer was disposed on the outside of the product.

[0164] The mixed powders of Examples 44 to 46 were press-molded to obtain heat insulating materials, which were then subjected to a performance test. The density uniformity test method was as follows: a large block sample was cut into small blocks, and the density of each block was measured and averaged. The fluctuation range was ±30 kg / m. 3Within this range. Heat resistance test method: A 650°C heat source is applied evenly to one side of the insulation material at 0.4 MPa, and the cold surface temperature of the insulation material is measured after 20 minutes. Here, the sample size is 110mm x 110mm, and the heat source size is 100mm x 100mm. Vibration powder loss rate test: The insulation material is treated for 30 minutes using a vibrating screen with a vibration frequency of 1400 rad / s and an amplitude of 3mm, and the powder loss rate of the insulation material (the ratio of the mass of the fallen powder to the original insulation material) is measured. The test results are as follows:

[0165] JPEG2026508117000017.jpg30170

[0166] Examples 47-49 Examples 47-49 provide thermal insulation materials, which include nanopowder, reinforcing phase material, infrared shading agent, and micron powder. The material proportions and properties of Examples 47-49 are as follows:

[0167] JPEG2026508117000018.jpg100170

[0168] The insulating materials of Examples 47-49 were prepared as follows. Step (1): Weigh each raw material component, and attach an appropriate amount of ethanol to the surface of the nanopowder by atomization. Disperse and mix the raw materials by airflow dispersion and sedimentation to obtain a mixed powder. Step (2): The mixed powder is placed in a mold, and a needle is used to repeatedly move up and down in the mold containing the mixed powder to disrupt the fiber distribution, causing the reinforcing phase fibers in the mixed powder to change from horizontal to another direction, and then the mixture is press-molded in a press to obtain a thermal insulating material.

[0169] In Example 47, the reinforcing inorganic fibers in the raw material in step (1) were single fibers obtained by directly opening 25 mm long fiber clusters, and in step (2), the molding pressure was 15 MPa, the holding time was 80 seconds, and evacuation was performed through a micro-hole mold during the press molding process. The heat insulating material obtained in Example 47 was no longer subjected to hydrophobic treatment, and no structural layer was provided on the outside of the product.

[0170] The reinforcing inorganic fiber in the raw material of Example 48, step (1), was a commercially available single fiber with a diameter of 1 μm and a length of 4 mm. In step (2), the molding pressure was 12 MPa and the holding time was 120 seconds. Before press molding, the mixed powder was pre-evacuated using an exhaust plate, and then press molding was performed. The insulating material obtained in Example 48 was subjected to a hydrophobic treatment. The hydrophobic treatment involves introducing a gas-phase hydrophobic reagent into the insulating material obtained by production and leaving it to stand for a certain period of time to obtain a hydrophobic insulating material.

[0171] In step (1) of Example 49, the reinforcing inorganic fibers in the raw material were single fibers obtained by opening and pulverizing fiber clusters with an initial length of 6 mm, and in step (2), the molding pressure was 14 MPa, the holding time was 100 seconds, and the mixed powder was pre-evacuated using an exhaust plate before press molding. The heat insulating material obtained in Example 49 was not subjected to a hydrophobic treatment, and no structural layer was disposed on the outside of the product.

[0172] The mixed powders of Examples 47-49 were press-molded to obtain heat insulating materials, which were then subjected to performance tests. Here, the density uniformity test method was as follows: a large block sample was cut into small blocks, and the density of each was measured and averaged, with a fluctuation range of ±30 kg / m. 3 Within this range. Heat resistance test method: A 650°C heat source is applied evenly to one side of the insulation material at 0.4 MPa, and the cold surface temperature of the insulation material is measured after 20 minutes. Here, the sample size is 110mm x 110mm, and the heat source size is 100mm x 100mm. Vibration powder loss rate test: The insulation material is treated for 30 minutes using a vibrating screen with a vibration frequency of 1400 rad / s and an amplitude of 3mm, and the powder loss rate of the insulation material (the ratio of the mass of the fallen powder to the original insulation material) is measured. The test results are as follows:

[0173] JPEG2026508117000019.jpg30170

[0174] Examples 50-52 Examples 50-52 provide heat insulating materials obtained by pressing mixed powders, which include nanopowder, reinforcing phase material, infrared shaping agent, micron powder, getter, and desiccant. The material proportions and properties of Examples 50-52 are as follows:

[0175] JPEG2026508117000020.jpg142170

[0176] The insulating materials of Examples 50-52 were prepared as follows. Step (1): Weigh each raw material component, attach an appropriate amount of butanol to the surface of the nanopowder by atomization, and disperse and mix the raw materials by airflow dispersion and sedimentation to obtain a mixed powder. Step (2): The mixed powder is placed in a mold, and a needle is used to repeatedly move up and down in the mold containing the mixed powder to disrupt the fiber distribution, causing the reinforcing phase fibers in the mixed powder to change from horizontal to another direction, and then the mixture is press-molded in a press to obtain a thermal insulating material.

[0177] Here, the reinforcing inorganic fiber in the raw material of step (1) in Example 50 was a single fiber with a diameter of 6 μm and a length of 8 mm purchased from the market, the molding pressure in step (2) was 10 MPa, and the holding time was 150 seconds. Before press molding, the mixed powder was pre-evacuated through an exhaust plate, and then evacuated through a micro-hole mold during the press molding process.

[0178] The reinforcing inorganic fibers in the raw material of step (1) in Example 51 were single fibers obtained by opening a fiber cluster with a length of 15 mm, and the molding pressure in step (2) was 5 MPa and the holding time was 220 seconds. Before press molding, the mixed powder was pre-evacuated through an exhaust plate and then press molded.

[0179] In step (1) of Example 52, the reinforcing phase inorganic fibers in the raw material were single fibers obtained by opening and pulverizing fiber clusters with an initial length of 12 mm. In step (2), the molding pressure was 15 MPa and the holding time was 80 seconds. Before press molding, the mixed powder was pre-evacuated using an exhaust plate, and then evacuated through a micro-hole mold during the press molding process.

[0180] The mixed powders of Examples 50-52 contain getters and desiccants. Depending on the raw materials used, the product is encapsulated. The insulating layer is then wrapped with a plastic sealant or adhesive to create a composite insulating component. The wrapping layer is made of PET film, PI film, PE film, PPEEK film, PTFE film, nonwoven fabric, or high-silica cloth.

[0181] The insulating materials produced in Examples 50-52 are packaged because they contain getters and desiccants. Because of the packaging layer, the vibration powder loss rate of the insulating materials after packaging is 0. The vibration powder loss rate of this part is not tested.

[0182] The mixed powders of Examples 50-52 were press-molded to obtain heat insulating materials, which were then subjected to a performance test. Here, the density uniformity test method was as follows: a large block sample was cut into small blocks, the density of each was measured, and the average value was calculated. The fluctuation range was ±30 kg / m. 3 Heat resistance test method: At 0.4 MPa, a heat source of 650°C is applied evenly to one side of the insulation material, and the cold surface temperature of the insulation material is measured after 20 minutes. Here, the sample size is 110 mm x 110 mm, and the heat source size is 100 mm x 100 mm. The test results are as follows:

[0183] JPEG2026508117000021.jpg26170

[0184] In another embodiment, the reinforcing inorganic fibers and / or reinforcing organic fibers used in the mixed powder may be magnetic fibers. In the method for producing a thermal insulating material, the orientation of the reinforcing inorganic fibers and / or reinforcing organic fibers in the mixed powder can be changed by a magnetic field, thereby increasing the number of entanglement points between the fibers. The method for producing magnetic fibers used involves adding a magnetic material during the fiber production process to obtain magnetic fibers.

[0185] In another embodiment, the reinforcing phase inorganic fibers and / or the reinforcing phase organic fibers used in the mixed powder may be electrically conductive. In the method for producing a thermal insulating material, the orientation of the reinforcing phase inorganic fibers and / or the reinforcing phase organic fibers in the mixed powder can be changed by applying an electric field, thereby increasing the number of entanglement points between the fibers.

[0186] In the above embodiment, the hydrophobic reagent used includes one or more of hydrophobic alkoxysilane, hexamethyldisiloxane, and hexamethyldisilazane. Specifically, the hydrophobic reagent used includes one or more of methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, chloropropyltriethoxysilane, chloropropyltrimethoxysilane, chloropropylmethyldimethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, trimethylchlorosilane, hexamethyldisiloxane, and hexamethyldisilazane. The gas-phase hydrophobic reagent used is obtained by heating and gasifying a liquid hydrophobic reagent.

[0187] Comparative Example 1 This comparative example provides a heat insulating material and its manufacturing method. The raw materials and manufacturing method are basically the same as those in Example 38, but the mixed powder contains only nanopowder and reinforcing phase inorganic fiber, and no reinforcing phase organic material is added. The raw material ratio of nanopowder to reinforcing phase inorganic fiber is 40:10, and the other conditions are the same as those in Example 38. The performance test results are as follows.

[0188] JPEG2026508117000022.jpg22170

[0189] Comparative Example 2 This comparative example provides a heat insulating material and its manufacturing method. The raw materials and manufacturing method are basically the same as those in Example 41. The difference is that in step (2) of the heat insulating material manufacturing process, the fiber direction is not changed by repeatedly moving the mixed powder up and down using a needle in a mold containing the mixed powder, and the mixed powder obtained in step (1) is directly press-molded using a press. The rest is the same as in Example 41. The performance test results are as follows.

[0190] JPEG2026508117000023.jpg21170

[0191] The above are embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by utilizing the contents of the specification and drawings of the present application, or any directly or indirectly applicable to other related technical fields, are also included in the patent protection scope of the present application. [Explanation of symbols]

[0192] 1. Insulation products 2 battery cells 3 Battery Housing 11 Heat insulating materials 12 Connecting member 111 Insulation layer 112 Structural Layer 1111 Heat insulating powder 1112 Reinforcement fiber

Claims

1. 1. An insulating material comprising a pre-insulating powder and reinforcement phase fibers, wherein the insulating powder is supported on the surface of the reinforcement phase fibers, and wherein the insulating powder is 25 to 120 parts by mass and the reinforcement phase fibers are 0.5 to 40 parts by mass.

2. 10. The insulating material of claim 1, wherein the insulating powder is supported on the surface of the reinforcement phase fibers by hydrogen bonding and / or electrostatic attraction.

3. The hydroxyl group content on the surface of the heat insulating powder is 1.4 to 2.5 / nm ２ and the hydroxyl group content on the surface of the reinforcing phase fiber is 1 to 3 / nm ２ The thermal insulating material according to claim 2, wherein

4. the insulating powder comprises a micron powder, the micron powder comprising one or more of micron fumed silica powder, micron fumed alumina powder, micron zirconia powder, micron titanium oxide powder, micron iron oxide powder, micron zirconia aerogel powder, micron silica aerogel powder and micron alumina aerogel powder, silica ash, white carbon black, diatomaceous earth and fly ash, the particle size of the micron powder being between 1 and 100 μm; and / or 2. The thermal insulation material of claim 1, wherein the insulating powder comprises nano-powder, the nano-powder comprising one or more of nano-fumed silica powder, nano-fumed alumina powder, nano-zirconia powder, nano-titanium oxide powder, nano-iron oxide powder, nano-zirconia aerogel powder, nano-silica aerogel powder, and nano-alumina aerogel powder, and the particle size of the nano-powder is 5 to 50 nm.

5. 5. The heat insulating material of claim 4, wherein the heat insulating powder comprises a nanopowder, and a plurality of the nanopowder particles are agglomerated to form micron-sized agglomerates having a porous structure, and the voids of the agglomerates are nanometer-sized.

6. 5. The heat insulating material according to claim 4, wherein the heat insulating powder comprises the nano powder and the micro powder, and the nano powder is 25 to 90 parts by mass and the micro powder is 0 to 30 parts by mass.

7. 2. The thermal insulation material of claim 1, wherein the reinforcement phase fibers comprise one or more of glass fibers, alumina fibers, and aluminum silicate fibers, the reinforcement phase fibers having a diameter of 1 to 20 μm and a length of 4 to 20 mm.

8. The insulating material according to any one of claims 1 to 7, wherein the insulating material comprises the insulating powder and the reinforcing phase fibers.

9. the heat insulating material further comprises an infrared shading agent, the infrared shading agent being one or more of silicon carbide, titanium dioxide, zirconium oxide, and zinc oxide, or the infrared shading agent being potassium hexatitanate whiskers or silicon carbide whiskers, and the infrared shading agent is present in an amount of 0 to 60 parts by weight; and / or the thermal insulation material further comprises a getter, the getter being one or more of activated carbon, barium lithium alloy activator, calcium oxide, magnesium oxide, silica gel, and the getter is present in an amount of 0 to 10 parts by weight; and / or 8. The thermal insulation material according to claim 1, further comprising a desiccant, the desiccant being one or more of anhydrous calcium chloride, soda lime, quicklime, and solid sodium hydroxide, and the desiccant is present in an amount of 0 to 10 parts by weight.

10. A method for producing the thermal insulating material according to any one of claims 1 to 9, wherein the method for producing the thermal insulating material comprises: Weighing the heat insulating powder and the reinforcing phase fibers, dispersing and mixing them in a mixing device to obtain a mixed powder; Putting the mixed powder into a mold and pressing it with a press to obtain a heat insulating material; A method for producing a thermal insulating material, comprising:

11. 11. The method for producing a thermal insulating material according to claim 10, wherein the step of weighing the thermal insulating powder and the reinforcement phase fibers, dispersing and mixing them in a mixing device to obtain a mixed powder includes processing the reinforcement phase fibers by opening and pulverizing them.

12. 11. The method for producing a heat insulating material according to claim 10, wherein the step of placing the mixed powder in a mold and press-molding it in a press device to obtain a heat insulating material further includes an evacuation operation, the evacuation operation being carried out before and during the press-molding, the evacuation operation being carried out by evacuating through a perforated evacuation plate and / or a perforated mold, the press-molding pressure being 0.5 to 20 MPa, and the holding time being 10 to 300 seconds.

13. 11. The method for producing a heat insulating material according to claim 10, wherein the step of weighing the heat insulating powder and the reinforcing phase fibers, dispersing and mixing them in a mixing device to obtain a mixed powder includes performing a surface treatment on the heat insulating powder, the surface treatment being to attach an appropriate amount of solvent to the surface of the heat insulating powder by atomization, the solvent being an alcohol solvent, the alcohol solvent including ethanol, propanol, or butanol.

14. 11. The method for producing a thermal insulation material according to claim 10, wherein the step of weighing the insulating powder and the reinforcing phase fibers, dispersing and mixing them in a mixing device to obtain a mixed powder includes modifying the reinforcing phase fibers so that the surfaces of the reinforcing phase fibers have necessary groups that are crosslinked with the insulating powder.

15. A thermal insulation member including a thermal insulation layer and a structural layer, The insulating layer comprises the insulating material according to any one of claims 1 to 9, The structural layer is disposed on one or both sides of the insulating layer.

16. 16. The heat insulating member according to claim 15, wherein the structural layer is a reinforcing layer, and the reinforcing layer is a hard reinforcing layer or a soft reinforcing layer, wherein the hard reinforcing layer is any one of a resin plate, a rubber sheet, glass, and a prepreg, and the soft reinforcing layer is a nonwoven fabric or a high-silicon cloth; or the structural layer is a reflective layer or a packaging layer, wherein the reflective layer is aluminum foil, aluminum foil cloth, or copper foil, and the packaging layer is any one of a PET film, a PI film, a PE film, a PEEK film, a PTFE film, a nonwoven fabric, and a high-silicon cloth.

17. An insulating product used to separate a single cell or to separate a single cell from components other than the single cell, The insulation product includes an insulation member and a connector; The heat insulating member is the heat insulating member according to claim 15 or 16, The connector is used to connect the insulating member to the single cell or a component other than the single cell, in an insulating product.

18. 20. The insulation product of claim 17, wherein the connector is an adhesive layer.

19. A battery comprising at least one battery cell and / or battery module and / or battery housing and an insulating product, A battery, wherein the insulation product is disposed between adjacent battery cells of the battery, and / or between the battery cells and the battery housing, and / or between the battery cells and the battery modules, and / or between the battery modules and the battery modules, and / or between the battery modules and the battery housing, and wherein the insulation product is the insulation product of claim 17 or claim 18.

20. 20. An electrical device comprising the battery of claim 19.

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