Bubble aluminum film heat insulation blanket and preparation method thereof

Abstract

The embodiment of the invention relates to the technical field of heat insulation materials, in particular to a bubble aluminum film heat insulation blanket and a preparation method thereof. The bubble aluminum film heat insulation blanket comprises a wear-resistant layer, an outer aluminum foil layer, a plurality of bubble layers, an inner aluminum foil layer and a waterproof layer which are sequentially arranged, and the waterproof layer is transparent and tightly attached to the target heat insulation surface. The preparation method comprises the following steps: arranging the wear-resistant layer on one surface of the outer aluminum foil layer; a waterproof layer is arranged on the inner aluminum foil layer; and placing the plurality of bubble layers between the outer aluminum foil layer and the inner aluminum foil layer, and carrying out hot press molding at 60-80 DEG C to obtain the bubble aluminum film heat insulation blanket.

Description

Technical Field

[0001] Multiple embodiments of the present specification relate to the technical field of thermal insulation materials, and specifically to a bubble aluminum film thermal insulation blanket and a preparation method thereof. Background Art

[0002] As an indispensable part of modern architecture and industry, thermal insulation materials are becoming increasingly important. These materials can effectively reduce the transfer of heat and maintain the stability of ambient temperature, which is of great significance for energy conservation, emission reduction and living comfort. According to different working principles, thermal insulation materials can be roughly divided into three categories: porous materials, heat reflective materials and vacuum materials. Porous materials achieve thermal insulation by containing a large number of tiny bubbles or voids inside. The presence of these bubbles or voids greatly reduces the thermal conductivity of the material, because the thermal conductivity of gas is much lower than that of solid. This type of material includes foam plastics, rock wool, glass wool, etc., which are widely used in thermal insulation treatment of walls, roofs and floors. It not only has good thermal insulation performance, but also has a certain sound absorption effect. It is one of the commonly used thermal insulation materials in the construction field.

[0003] Heat reflective materials rely mainly on the high reflectivity of the surface to block the absorption of heat. Such materials usually have a smooth or mirrored surface, which can effectively reflect the infrared part of sunlight, thereby reducing the heat entering the room. Heat reflective paint, metal foil, etc. are common heat reflective materials, especially suitable for use in high-temperature areas in summer, which helps to reduce air conditioning energy consumption and improve energy efficiency.

[0004] Vacuum materials use the extremely low thermal conductivity of a vacuum state to achieve thermal insulation. Since there are almost no material molecules in a vacuum, it is difficult for heat to be transferred by conduction or convection. This material is usually composed of two or more layers of metal film, and a highly vacuum space is formed in it. Although the cost is relatively high, its excellent thermal insulation performance makes it irreplaceable in some special occasions such as low-temperature storage, aerospace and other fields.

[0005] However, current thermal insulation materials have single functions and low strength, and are easily damaged during installation and construction. Summary of the invention

[0006] Multiple embodiments of this specification describe a bubble aluminum film thermal insulation blanket and a preparation method thereof.

[0007] In a first aspect, the present specification provides a bubble aluminum film insulation blanket, comprising a wear-resistant layer, an outer aluminum foil layer, a plurality of bubble layers, an inner aluminum foil layer and a waterproof layer arranged in sequence, wherein the waterproof layer is a transparent waterproof layer, and the waterproof layer is in close contact with the target insulation surface.

[0008] In a second aspect, the present specification provides a method for preparing the aforementioned bubble aluminum film thermal insulation blanket, comprising the steps of:

[0009] A wear-resistant layer is provided on one surface of the outer aluminum foil layer;

[0010] A waterproof layer is provided on the inner aluminum foil layer;

[0011] A plurality of bubble layers are placed between an outer aluminum foil layer and an inner aluminum foil layer, and hot pressing is performed at 60-80° C. to obtain a bubble aluminum film insulation blanket.

[0012] The beneficial effects brought by the technical solutions provided by some embodiments of this specification include at least:

[0013] The bubble aluminum film thermal insulation blanket provided in this specification protects the outer aluminum foil layer by setting a wear-resistant layer, which can effectively avoid the damage and deformation of the aluminum foil during transportation and installation. The inner aluminum foil layer and the outer aluminum foil layer have high thermal reflectivity, effectively reflect the heat radiation back to the heat source, reduce losses, and improve the thermal insulation effect. The bubble layer effectively reduces the conduction of heat, provides buffering and shock absorption, and protects the internal structure from impact. The inner aluminum foil layer, the outer aluminum foil layer and the bubble layer are hot-pressed and formed without glue, which improves the material integrity and green environmental protection performance. The waterproof layer set in the inner aluminum foil layer can prevent moisture penetration and protect the inner aluminum foil layer from being easily damaged. The first PET film layer and the second PET film layer further enhance the mechanical strength and tensile strength of the bubble aluminum film thermal insulation blanket, so that the inner aluminum foil layer and the outer aluminum foil layer have better forming performance and tearing and tensile resistance. The bubble aluminum film thermal insulation blanket provided in this specification can be used in industrial buildings, civil buildings and public buildings, and has good thermal insulation effects.

[0014] Other features and advantages of the various embodiments of the present specification will be further disclosed in the following detailed description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of this specification, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of one of the application scenarios of the bubble aluminum film insulation blanket provided in the embodiments of this specification.

[0017] Figure 2 This is a schematic diagram of the structure of the bubble aluminum film insulation blanket provided in the embodiments of this specification.

[0018] Figure 3 A schematic diagram of another bubble aluminum film thermal insulation blanket structure provided in an embodiment of this specification.

[0019] Figure 4 This is a schematic diagram of temperature detection provided in an embodiment of this specification. DETAILED DESCRIPTION

[0020] The following is an explanation and description of the technical solutions of the embodiments of this specification in conjunction with the drawings of the embodiments of this specification, but the following embodiments are only preferred embodiments of this specification, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of this specification.

[0021] The terms "first", "second", "third", etc. in the description and claims of this specification and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0022] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as a limitation of this specification.

[0023] The data involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection of relevant data complies with the relevant laws, regulations and standards of relevant countries and regions.

[0024] Before describing the technical solution in this specification, the application scenarios and related technologies of the technical solution are introduced.

[0025] Aluminum insulation blankets have many applications in daily life due to their excellent reflectivity and thermal insulation properties. For example, laying aluminum insulation blankets on the roof can effectively reflect solar radiation, reduce the rise in indoor temperature, and reduce air conditioning energy consumption. Installing aluminum insulation blankets on the inside and outside of the wall can improve the thermal insulation effect of the wall, reduce the cold and hot bridge effect, and maintain a stable indoor temperature. Laying aluminum insulation blankets under the floor or ground can reduce the heat conducted from the ground and improve living comfort.

[0026] There is also room for use in agriculture and personal products. For example, using aluminum insulation blankets on the top and sides of a greenhouse can regulate the temperature in the greenhouse and reduce the impact of high temperatures in summer on plants. Using aluminum insulation blankets on the walls and roofs of agricultural product cold storage can maintain a low temperature environment and extend the shelf life of agricultural products. During outdoor activities, carrying aluminum insulation blankets can be used to keep warm in emergencies and prevent hypothermia. Using aluminum insulation blankets in camping equipment can reduce the temperature difference between the inside and outside of the tent and improve sleep quality. Using aluminum insulation blankets in the lining of cold-proof clothing can improve the warmth effect and reduce heat loss. Using aluminum insulation blankets in outdoor equipment such as sleeping bags and tents can improve comfort and safety.

[0027] It is also used in industry. Wrapping aluminum insulation blankets on the outside of industrial pipelines such as steam pipes 200 and hot water pipes can reduce heat loss and improve energy utilization. Figure 1 , laying a circle of aluminum film insulation blanket 100 outside the steam pipe 200 can improve the pipe insulation effect and reduce heat loss. Using aluminum insulation blankets outside large storage tanks such as chemical storage tanks and oil tanks can reduce temperature fluctuations and ensure the quality of stored materials.

[0028] The reason why aluminum insulation blankets can effectively insulate is that aluminum has a high reflectivity and can reflect most of the infrared radiation (heat radiation). When a heat source shines on the aluminum insulation blanket, most of the heat will be reflected back to the heat source, thereby achieving heat preservation. Although aluminum foil itself has a high thermal conductivity, aluminum insulation blankets are usually composed of multiple layers of materials, including one or more layers of aluminum foil and a layer of insulation material (such as polyethylene foam). These insulation materials have very low thermal conductivity and can effectively prevent the conduction of heat. Due to high reflectivity and low thermal conductivity, aluminum insulation blankets can effectively reduce heat transfer, keep indoor temperature stable, and reduce energy consumption.

[0029] But current aluminum insulation blankets are thin, have low mechanical strength, and are susceptible to physical damage. They need to be handled carefully during installation and use to avoid scratches or tears. Although aluminum foil itself is waterproof, the insulation materials in aluminum insulation blankets (such as polyethylene foam) may absorb moisture. If exposed to humidity for a long time, its insulation performance may be affected. Aluminum insulation blankets may deform or damage in high temperature environments. Although it can reflect heat, it may lose its effectiveness in extremely high temperatures (such as direct contact with flames). In addition, aluminum insulation blankets have poor sound insulation effects.

[0030] In view of this, this specification provides a bubble aluminum film insulation blanket, which increases its mechanical strength, is easy to install, and has good water-proof performance. By setting the temperature sensing layer 3, the aluminum film insulation blanket has more functions. Please refer to the attached Figure 2The bubble aluminum film thermal insulation blanket comprises a wear-resistant layer 1, an outer aluminum foil layer 2, a bubble layer, an inner aluminum foil layer 8 and a waterproof layer 9 arranged in sequence, wherein the waterproof layer 9 is a transparent waterproof layer 9, and the waterproof layer 9 is in close contact with the target thermal insulation surface. A first PET film layer is arranged between the outer aluminum foil layer 2 and the bubble layer, and a second PET film layer is arranged between the temperature sensing layer 3 and the bubble layer.

[0031] A wear-resistant layer 1 is arranged outside the outer aluminum foil layer 2 to protect the outer aluminum foil layer 2, and can effectively avoid the aluminum foil from being damaged or deformed during transportation and installation, and can deal with scratches, wear and physical damage. The outer aluminum foil layer 2 has a high thermal reflectivity, effectively reflects thermal radiation, reduces losses, and improves the thermal insulation effect. The air in the bubble layer is a poor heat conductor, which effectively reduces the conduction of heat. It provides buffering and shock absorption effects to protect the internal structure from impact. The bubble layer makes the bubble aluminum film thermal insulation blanket lighter and has a certain mechanical strength, which is easy to install and carry. That is, it can improve the thermal insulation effect, increase the impact resistance of the bubble aluminum film thermal insulation blanket, protect the structure, and avoid damage to the inner aluminum foil layer 8 and the outer aluminum foil layer 2. The raw materials of the bubble layer, by weight, include 30-130 parts of resin, 1-10 parts of dispersant, and 1-40 parts of flame retardant. The bubble layer is made by a blending blowing and suction molding method through a bubble film unit as known in the art.

[0032] As a preferred solution, the dispersant is selected from at least one of vinyl bisstearamide, tristearate glyceryl, barium stearate, zinc stearate, calcium stearate, magnesium stearate, copper stearate and polyethylene wax. Adding the dispersant can improve the dispersibility and compatibility between the components.

[0033] As a preferred solution, the flame retardant is a mixture of a brominated flame retardant and an inorganic flame retardant, and the mass ratio of the brominated flame retardant to the inorganic flame retardant is 1-10:1.

[0034] As a preferred solution, the brominated flame retardant is selected from at least one of decabromodiphenylethane, (4-bromophenyl) diphenylphosphine oxide, and p-bromoethylbenzene. The brominated flame retardant is a new type of pollution-free flame retardant that does not produce toxic substances when burned, has good thermal stability, good flame retardant effect, good dispersibility and miscibility in thermoplastic resins, and is conducive to the molding and processing of thermoplastic resins.

[0035] As a preferred solution, the inorganic flame retardant is selected from at least one of antimony trioxide, magnesium hydroxide, aluminum hydroxide, melamine, and zinc borate. The inorganic flame retardant has good thermal stability and good smoke suppression effect. When used in a certain amount, it can slow down the thermal decomposition temperature of the thermoplastic resin. However, when added in a large amount, the fluidity of the thermoplastic resin will deteriorate, affecting the molding and processing performance of the thermoplastic resin.

[0036] The inner aluminum foil layer 8 has high heat reflection performance, reflects heat radiation back to the heat source, and effectively reduces heat loss. The waterproof layer 9 provided on the inner aluminum foil layer 8 can prevent moisture penetration, and at the same time can protect the inner aluminum foil layer 8 from being easily damaged. The first PET film layer and the second PET film layer further enhance the mechanical strength and tensile strength of the bubble aluminum film insulation blanket. As a preferred solution, the thickness of the first PET film layer can be between 3-23μm, and the thickness of the second PET film layer can be between 3-23μm. The PET film has good hot melt formability, and its performance in all aspects does not decay after multiple thermal processing. It has excellent processing resistance and good ductility during processing. The use of hot pressing technology can make the PET film firmly attached to the inner aluminum foil layer 8 and the outer aluminum foil layer 2, without the need for coating with a glue layer, thereby improving the environmental performance of the overall material.

[0037] On the other hand, in another embodiment, please refer to the attached Figure 3 The bubble aluminum film thermal insulation blanket comprises a wear-resistant layer 1, an outer aluminum foil layer 2, two bubble layers, an inner aluminum foil layer 8 and a waterproof layer 9 arranged in sequence, wherein the waterproof layer 9 is a transparent waterproof layer 9, and the waterproof layer 9 is in close contact with the target thermal insulation surface. A first PET film layer is arranged between the outer aluminum foil layer 2 and the bubble layer, and a second PET film layer is arranged between the temperature sensing layer 3 and the bubble layer. The two bubble layers are respectively a first bubble layer 5 and a second bubble layer 6.

[0038] On the other hand, in another embodiment, please refer to the attached Figure 4 A temperature sensing layer 3 is arranged between the outer aluminum foil layer 2 and the first PET film layer. The temperature sensing layer 3 includes a base layer and a plurality of parallel thermistor strings 32 connected in series by first metal wires 31 buried in the base layer. A second metal wire 33 is also arranged between two adjacent thermistor strings 32.

[0039] The method of using the temperature sensing layer 3 to detect temperature includes:

[0040] Select a section of 32 thermistors in series, and cut off both ends of the selected section of 32 thermistors in series;

[0041] One break is connected to the outer aluminum foil layer 2 using a wire, and the other break is connected to the adjacent metal wire;

[0042] The adjacent metal wires and the outer aluminum foil layer 2 are respectively connected to the two poles of the resistance measuring device, and the temperature at the selected thermistor 32 is obtained according to the resistance measurement result. Exemplarily, on a 2-kilometer steam pipeline 200, 10 positions are set for detection, that is, the temperature detection positions are set at intervals of about 20 meters. When setting the detection position, it is necessary to open an opening on the wear-resistant layer 1 and the outer aluminum foil layer 2 to ensure that the opening is small and additional insulation material is added after completion. A resistance measuring device is set at the starting end or the ending end of the steam pipeline 200. The resistance measuring device adopts the technology disclosed in the art.

[0043] On the other hand, the present specification provides a method for preparing the aforementioned bubble aluminum film thermal insulation blanket, comprising the steps of:

[0044] A wear-resistant layer 1 is provided on one surface of the outer aluminum foil layer 2;

[0045] A waterproof layer 9 is provided on the inner aluminum foil layer 8;

[0046] A plurality of bubble layers are placed between the outer aluminum foil layer 2 and the inner aluminum foil layer 8, and are hot-pressed at 60-80°C to obtain a bubble aluminum film insulation blanket.

[0047] Wherein, the wear-resistant layer 1 is prepared by the following steps:

[0048] Dissolve the polyurethane in ethanol, acetone, or tetrahydrofuran;

[0049] The solution is evenly sprayed on one surface of the outer aluminum foil layer 2;

[0050] The coated outer aluminum foil layer 2 is placed in an oven and dried at 60-80°C.

[0051] Wherein, the waterproof layer 9 is prepared by the following steps:

[0052] Polyether 330N and polyether 3000 are mixed to obtain a mixture, the mixture is heated to 120°C, and dehydrated for 1 hour under a vacuum degree of -0.1 MPa, and then the heating is stopped. When the temperature drops to 70°C, toluene diisocyanate is added, and the mixture is stirred evenly and heated to 80°C. The mixture is kept warm for reaction for 3 hours to obtain the first component;

[0053] Polyether 330N, diaminodiphenylmethane, polyethylene wax and mica powder were mixed evenly, heated to 120°C, and dehydrated for 1 hour under vacuum at -0.1 MPa to obtain a mixture;

[0054] Add stannous octoate, dibutyl phthalate and polydimethylsiloxane to the mixture, stir evenly and let stand to room temperature to obtain a second component;

[0055] The first component and the second component are mixed, stirred evenly and then coated on the inner side of the inner aluminum foil layer 8 .

[0056] The mass ratio of polyether 330N, polyether 3000 and toluene diisocyanate is 2:2:1;

[0057] The mass ratio of the polyether 330N, diaminodiphenylmethane, polyethylene wax and mica powder is 10:6:3:1;

[0058] The mass ratio of stannous octoate, dibutyl phthalate and polydimethylsiloxane is 1:2:3, and the mass ratio of diaminodiphenylmethane and polydimethylsiloxane is 10:1.

[0059] The temperature sensing layer 3 is prepared by the following steps:

[0060] Alumina micropowder is used as a filler, a silane coupling agent is used to modify the surface of the filler, the surface-modified filler is dispersed in a solvent, and an ultrasonic disperser is used to disperse the filler to obtain a filler solution;

[0061] Dissolving polymethyl methacrylate in a solvent to obtain a matrix solution;

[0062] Add the filler solution to the matrix solution and mix well;

[0063] The uniformly mixed solution is poured into a mold, in which a series of thermistors 32 and a second metal wire 33 are arranged, and a film is formed by a solvent volatilization method or a hot pressing method, and the temperature sensing layer 3 is obtained after drying.

[0064] Wherein, the solvent is tetrahydrofuran or dichloromethane. The drying temperature is 60-80° C. and the drying time is 1-3 hours.

[0065] Example 1

[0066] This embodiment provides a bubble aluminum film thermal insulation blanket, which includes a wear-resistant layer 1, an outer aluminum foil layer 2, a bubble layer, an inner aluminum foil layer 8 and a waterproof layer 9 arranged in sequence. The waterproof layer 9 is a transparent waterproof layer 9, and the waterproof layer 9 is close to the target thermal insulation surface. A first PET film layer is arranged between the outer aluminum foil layer 2 and the bubble layer, and a second PET film layer is arranged between the temperature sensing layer 3 and the bubble layer. The thickness of the wear-resistant layer 1 is 8μm, the inner aluminum foil layer 8 is made of grade 1070, and the outer aluminum foil layer 2 is made of grade 3003 of the Al-Mn series. The first PET film layer and the second PET film layer are both made of PET with a grade of P40. The thickness of the first PET film layer is 13μm, and the thickness of the second PET film layer is 23μm.

[0067] The raw materials of a bubble layer, i.e., the first bubble layer 5, include 30 parts of thermoplastic resin, 1 part of dispersant, and 1 part of flame retardant by weight. The thermoplastic resin is polyethylene with a brand of HD5502FA. The dispersant is polyethylene wax. The flame retardant is a mixture of decabromodiphenylethane and zinc borate, and the mass ratio of decabromodiphenylethane to zinc borate is 7:5.

[0068] A wear-resistant layer 1 is provided on one surface of the outer aluminum foil layer 2;

[0069] A waterproof layer 9 is provided on the inner aluminum foil layer 8;

[0070] A plurality of bubble layers are placed between an outer aluminum foil layer 2 and an inner aluminum foil layer 8, a first PET layer 4 is arranged between the outer aluminum foil layer 2 and the bubble layer, a second PET layer 7 is arranged between the inner aluminum foil layer 8 and the bubble layer, and hot pressing is performed at 60-80° C. to obtain a bubble aluminum film insulation blanket.

[0071] Wherein, the wear-resistant layer 1 is prepared by the following steps:

[0072] Dissolve the polyurethane in ethanol, acetone, or tetrahydrofuran;

[0073] The solution is evenly sprayed on one surface of the outer aluminum foil layer 2;

[0074] The coated outer aluminum foil layer 2 is placed in an oven and dried at 60-80°C.

[0075] Wherein, the waterproof layer 9 is prepared by the following steps:

[0076] Polyether 330N and polyether 3000 are mixed to obtain a mixture, the mixture is heated to 120°C, and dehydrated for 1 hour under a vacuum degree of -0.1 MPa, and then the heating is stopped. When the temperature drops to 70°C, toluene diisocyanate is added, and the mixture is stirred evenly and heated to 80°C. The mixture is kept warm for reaction for 3 hours to obtain the first component;

[0077] Polyether 330N, diaminodiphenylmethane, polyethylene wax and mica powder were mixed evenly, heated to 120°C, and dehydrated for 1 hour under vacuum at -0.1 MPa to obtain a mixture;

[0078] Add stannous octoate, dibutyl phthalate and polydimethylsiloxane to the mixture, stir evenly and let stand to room temperature to obtain a second component;

[0079] The first component and the second component are mixed, stirred evenly and then coated on the inner side of the inner aluminum foil layer 8 .

[0080] The mass ratio of polyether 330N, polyether 3000 and toluene diisocyanate is 2:2:1;

[0081] The mass ratio of the polyether 330N, diaminodiphenylmethane, polyethylene wax and mica powder is 10:6:3:1;

[0082] The mass ratio of stannous octoate, dibutyl phthalate and polydimethylsiloxane is 1:2:3, and the mass ratio of diaminodiphenylmethane and polydimethylsiloxane is 10:1.

[0083] The temperature sensing layer 3 is prepared by the following steps:

[0084] Alumina micropowder is used as a filler, a silane coupling agent is used to modify the surface of the filler, the surface-modified filler is dispersed in a solvent, and an ultrasonic disperser is used to disperse the filler to obtain a filler solution;

[0085] Dissolving polymethyl methacrylate in a solvent to obtain a matrix solution;

[0086] Add the filler solution to the matrix solution and mix well;

[0087] The uniformly mixed solution is poured into a mold, in which a series of thermistors 32 and a second metal wire 33 are arranged, and a film is formed by a solvent volatilization method or a hot pressing method, and the temperature sensing layer 3 is obtained after drying.

[0088] Wherein, the solvent is tetrahydrofuran or dichloromethane. The drying temperature is 60-80° C. and the drying time is 1-3 hours.

[0089] Example 2

[0090] This embodiment provides a bubble aluminum film thermal insulation blanket, which includes a wear-resistant layer 1, an outer aluminum foil layer 2, two bubble layers, an inner aluminum foil layer 8 and a waterproof layer 9, which are arranged in sequence. The waterproof layer 9 is a transparent waterproof layer 9, which is close to the target thermal insulation surface. A first PET film layer is arranged between the outer aluminum foil layer 2 and the bubble layer, and a second PET film layer is arranged between the temperature sensing layer 3 and the bubble layer. The thickness of the wear-resistant layer 1 is 8 μm, the inner aluminum foil layer 8 is made of 1070, and the outer aluminum foil layer 2 is made of 3003 of the Al-Mn series. The first PET film layer and the second PET film layer are both made of PET with a grade of P40. The thickness of the first PET film layer is 23 μm, and the thickness of the second PET film layer is 3 μm.

[0091] The raw materials of a bubble layer, i.e., the first bubble layer 5, include 30 parts of thermoplastic resin, 1 part of dispersant, and 1 part of flame retardant by weight. The thermoplastic resin is polyethylene with a brand of HD5502FA. The dispersant is polyethylene wax. The flame retardant is a mixture of decabromodiphenylethane and zinc borate, and the mass ratio of decabromodiphenylethane to zinc borate is 7:5.

[0092] The raw materials of the second bubble layer, i.e., the second bubble layer 6, include 30 parts of thermoplastic resin, 1 part of dispersant, and 1 part of flame retardant by weight. The thermoplastic resin is polyethylene with a brand of HD5502FA. The dispersant is polyethylene wax. The flame retardant is a mixture of decabromodiphenylethane and zinc borate, and the mass ratio of decabromodiphenylethane to zinc borate is 7:5. The rest is the same as in Example 1.

[0093] Example 3

[0094] In this embodiment, only the technical points different from those in Embodiment 1 are described. The raw materials of the first bubble layer 5, by weight, include 130 parts of resin, 10 parts of dispersant, and 40 parts of flame retardant. The thermoplastic resin is polyethylene, and the brand is HD5502FA. The dispersant is polyethylene wax. The flame retardant is a mixture of decabromodiphenylethane, antimony trioxide, and zinc borate, and the mass ratio of decabromodiphenylethane, antimony trioxide, and zinc borate is 10:3:1. The CAS number of the decabromodiphenylethane is 84852-53-9. The CAS number of the antimony trioxide is 1309-64-4. The CAS number of the zinc borate is 1332-07-6.

[0095] Example 4

[0096] This embodiment only describes the technical points that are different from those in Embodiment 1. The flame retardant is a mixture of p-bromoethylbenzene, antimony trioxide, and aluminum hydroxide, and the mass ratio of p-bromoethylbenzene, antimony trioxide, and aluminum hydroxide is 5:3:2. The CAS number of p-bromoethylbenzene is 1585-07-5. The CAS number of antimony trioxide is 1309-64-4. The product number of aluminum hydroxide is AH-3.

[0097] Example 5

[0098] In this embodiment, only the technical points different from those in Embodiment 1 are described. The flame retardant is a mixture of (4-bromophenyl) diphenyl phosphine oxide, p-bromoethylbenzene and antimony trioxide, and the mass ratio of (4-bromophenyl) diphenyl phosphine oxide, p-bromoethylbenzene and antimony trioxide is 3:5:1. The CAS number of the (4-bromophenyl) diphenyl phosphine oxide is 5525-40-6. The CAS number of p-bromoethylbenzene is 1585-07-5. The CAS number of antimony trioxide is 1309-64-4.

[0099] Comparative Example 1

[0100] This embodiment is different from Embodiment 1 in that the flame retardant is decabromodiphenylethane, and the CAS number of the decabromodiphenylethane is 84852-53-9.

[0101] Comparative Example 2

[0102] This embodiment is different from Embodiment 1 in that the flame retardant is zinc borate, and the CAS number of the zinc borate is 1332-07-6.

[0103] Comparative Example 3

[0104] The difference between this embodiment and embodiment 1 is that the flame retardant is a mixture of chlorinated paraffin-70 and zinc borate, and the mass ratio of chlorinated paraffin-70 to zinc borate is 7:5. The CAS number of chlorinated paraffin-70 is 106232-86-4. The CAS number of zinc borate is 1332-07-6.

[0105] Comparative Example 4

[0106] The difference between this embodiment and embodiment 1 is that the flame retardant is a mixture of chlorinated paraffin-70, magnesium hydroxide, and zinc borate, and the mass ratio of chlorinated paraffin-70, magnesium hydroxide, and zinc borate is 8:3:1. The CAS number of chlorinated paraffin-70 is 106232-86-4. The CAS number of magnesium hydroxide is 1909-42-8. The CAS number of zinc borate is 1332-07-6.

[0107] Performance Testing

[0108] Test 1: The samples of the bubble aluminum thermal insulation blankets obtained in Examples 1-5 and Comparative Examples 1-4 were subjected to a combustion performance test in accordance with the standard of GB 8624-2012.

[0109] Test 2: The samples of the bubble aluminum thermal insulation blankets obtained in Examples 1-5 and Comparative Examples 1-4 were subjected to a tear strength performance test in accordance with the standard of GB / T 529-2008.

[0110] Test 3: The samples of the bubble aluminum insulation blankets obtained in Examples 1-5 and Comparative Examples 1-4 were subjected to tensile strength and water permeability tests in accordance with the standard of GB18173.1-2012.

[0111] From the test results shown in Table 1, it can be seen that the bubble aluminum thermal insulation blanket disclosed in multiple embodiments of this specification has better combustion resistance and better mechanical properties. When the bubble aluminum thermal insulation blanket is arranged, the outer aluminum foil layer and the inner aluminum foil layer therein are not easily damaged, thereby ensuring the thermal insulation performance.

[0112] Table 1 Test results

[0113]

[0114] The above is only a preferred embodiment of the present invention and is not intended to limit the invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A bubble aluminum film insulation blanket, characterized in that: It comprises a wear-resistant layer, an outer aluminum foil layer, a plurality of bubble layers, an inner aluminum foil layer and a waterproof layer which are arranged in sequence. The waterproof layer is a transparent waterproof layer which is in close contact with the target heat-insulating surface.

2. The bubble aluminum film thermal insulation blanket according to claim 1, characterized in that: A first PET film layer is arranged between the outer aluminum foil layer and the bubble layer, and a second PET film layer is arranged between the temperature sensing layer and the bubble layer.

3. The air bubble aluminum film thermal insulation blanket according to claim 1 or 2, characterized in that: A temperature sensing layer is arranged between the outer aluminum foil layer and the first PET film layer. The temperature sensing layer includes a base layer and a plurality of parallel thermistor strings connected in series by first metal wires buried in the base layer. A second metal wire is also arranged between two adjacent thermistor strings.

4. The bubble aluminum film thermal insulation blanket according to claim 3, characterized in that: The method for detecting temperature using the temperature sensing layer comprises: Select a section of thermistor string and cut off both ends of the selected section of thermistor string; One break uses a wire to connect the outer aluminum foil layer, and the other break connects the adjacent metal wire; The adjacent metal wires and the outer aluminum foil layer are respectively connected to two electrodes of a resistance measuring device, and the temperature at the selected thermistor is obtained according to the resistance measurement result.

5. A method for preparing the bubble aluminum film thermal insulation blanket according to any one of claims 1 to 4, characterized in that: Includes steps: A wear-resistant layer is provided on one surface of the outer aluminum foil layer; A waterproof layer is provided on the inner aluminum foil layer; A plurality of bubble layers are placed between an outer aluminum foil layer and an inner aluminum foil layer, and hot pressing is performed at 60-80° C. to obtain a bubble aluminum film insulation blanket.

6. The method for preparing a bubble aluminum film thermal insulation blanket according to claim 5, characterized in that: The raw materials of the bubble layer include, by weight, 30 parts of thermoplastic resin, 1 part of dispersant, and 1 part of flame retardant.

7. The method for preparing a bubble aluminum film thermal insulation blanket according to claim 5 or 6, characterized in that: The wear-resistant layer is prepared by the following steps: Dissolve the polyurethane in ethanol, acetone or tetrahydrofuran (THF); The solution is evenly sprayed on one surface of the outer aluminum foil layer; The coated outer aluminum foil layer is placed in an oven and dried at 60-80°C.

8. The method for preparing a bubble aluminum film thermal insulation blanket according to claim 5 or 6, characterized in that: The waterproof layer is prepared by the following steps: Polyether 330N and polyether 3000 are mixed to obtain a mixture, the mixture is heated to 120°C, and dehydrated for 1 hour under a vacuum degree of -0.1 MPa, and then the heating is stopped. When the temperature drops to 70°C, toluene diisocyanate is added, and the mixture is stirred evenly and heated to 80°C. The mixture is kept warm for reaction for 3 hours to obtain the first component; Polyether 330N, diaminodiphenylmethane, polyethylene wax and mica powder were mixed evenly, heated to 120°C, and dehydrated for 1 hour under vacuum at -0.1 MPa to obtain a mixture; Add stannous octoate, dibutyl phthalate and polydimethylsiloxane to the mixture, stir evenly and let stand to room temperature to obtain a second component; Mix the first component and the second component, stir evenly and apply them on the inner side of the inner aluminum foil layer.

9. The method for preparing a bubble aluminum film thermal insulation blanket according to claim 5 or 6, characterized in that: The mass ratio of polyether 330N, polyether 3000 and toluene diisocyanate is 2:2:1; The mass ratio of the polyether 330N, diaminodiphenylmethane, polyethylene wax and mica powder is 10:6:3:1; The mass ratio of stannous octoate, dibutyl phthalate and polydimethylsiloxane is 1:2:3, and the mass ratio of diaminodiphenylmethane and polydimethylsiloxane is 10:

1.

10. The method for preparing a bubble aluminum film thermal insulation blanket according to claim 5 or 6, characterized in that: The temperature sensing layer is prepared by the following steps: Alumina powder is used as a filler, a silane coupling agent is used to modify the surface of the filler, the surface-modified filler is dispersed in a solvent, and an ultrasonic disperser is used to disperse the filler to obtain a filler solution; Dissolving polymethyl methacrylate in a solvent to obtain a matrix solution; Add the filler solution to the matrix solution and mix well; The uniformly mixed solution is poured into a mold, in which a thermistor string and a second metal wire are arranged, and a film is formed by a solvent volatilization method or a hot pressing method, and a temperature sensing layer is obtained after drying.

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