Fireproof composite material and method for manufacturing the same

By combining modified silicone pressure-sensitive adhesive and mica tape on both sides of ceramicized silicone foam material, a composite material with both fire-resistant and mechanical properties was prepared. This solved the problem of thermal runaway between cells in power battery PACK, improved the bonding strength and heat resistance, and reduced production costs.

CN117698241BActive Publication Date: 2026-01-13PAMICA IND (HUBEI) CO LTD
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Patent Information

Application Number
CN202311720519.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-12-14
Publication Date
2026-01-13
Estimated Expiration
2043-12-14

AI Technical Summary

Technical Problem

Existing mica materials are insufficient to effectively prevent thermal runaway between cells in power battery packs. The ablation resistance of ceramicized silicone rubber foam materials is insufficient, resulting in inadequate fireproof insulation between cells. Furthermore, the adhesion and heat resistance of silicone pressure-sensitive adhesives need to be further improved.

Method used

By compositing mica tape on both sides of a ceramicized silicone foam material and using a modified silicone pressure-sensitive adhesive, a composite material with fire resistance, mechanical properties, and resilience was prepared. The modified silicone pressure-sensitive adhesive improved its adhesion and heat resistance by modifying ammonium polyphosphate and organic montmorillonite.

Benefits of technology

It achieves efficient fireproof insulation between cells in the power battery pack, reduces material density, helps to make new energy vehicles lighter, improves bonding strength and heat resistance, and reduces production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the field of fireproof composite materials and discloses a fireproof composite material, which comprises a ceramicized organic silicon foaming layer and double-sided tapes arranged on the two sides of the ceramicized organic silicon foaming layer, wherein the double-sided tape is a mica tape composed of upper and lower glass fiber cloths and a mica paper layer in the middle and is composed of modified organic silicon pressure-sensitive adhesive, a new composite material is formed by compounding a layer of mica tape on the two sides of the ceramicized organic silicon foaming material, the mica organic silicon composite fireproof material is prepared, the fireproof performance and the mechanical performance of the mica organic silicon composite fireproof material are excellent, and the mica organic silicon composite fireproof material also has resilience, and the bonding performance and heat resistance of the organic silicon pressure-sensitive adhesive are improved by modifying the organic silicon pressure-sensitive adhesive.
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Description

Technical Field

[0001] This invention belongs to the field of fire-resistant composite material technology, specifically relating to a fire-resistant composite material and its manufacturing method. Background Technology

[0002] Currently, there are two main types of fire-resistant and heat-insulating materials under development for power battery pack cells: mica insulation materials and ceramicized silicone rubber. Mica, with its unique insulation and high-temperature resistance properties, is typically fabricated into 3D mica components for use in power batteries. Power battery packs usually consist of hundreds or thousands of cells. During charging, the cells slightly expand in volume, and during discharging, they slightly shrink. Since mica is difficult to compress like elastic materials, fire-resistant insulation between cells mainly relies on ceramicized silicone rubber foam. However, because ceramicized silicone rubber foam has lower ablation resistance than mica, when one cell malfunctions, surrounding cells are easily detonated due to lack of protection, leading to thermal runaway.

[0003] Silicone pressure-sensitive adhesives, a special type of pressure-sensitive adhesive material used in mica tape, have the advantages of good adhesion to both high-energy and low-energy surfaces, and are non-corrosive and non-irritating. Currently, the heat resistance temperature of domestically produced silicone pressure-sensitive adhesives is generally around 200℃, with good performance, no residue, and no delamination. However, the actual operating temperatures in the electronics industry are much higher. With the continuous development of science and technology, high heat resistance and excellent high and low temperature mechanical properties have become the main goals of current silicone pressure-sensitive adhesive development. Summary of the Invention

[0004] To address the shortcomings mentioned in the background art, the present invention aims to provide a fire-resistant composite material and its manufacturing method. A new composite material is formed by laminating a layer of mica tape on both sides of a ceramicized organosilicon foam material, thereby preparing a mica-organosilicon composite fire-resistant material with excellent fire resistance and mechanical properties as well as resilience. In addition, the organosilicon pressure-sensitive adhesive is modified to improve its adhesion and heat resistance.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A fire-resistant composite material, comprising a ceramicized silicone foam layer and double-sided tape disposed on both sides of the ceramicized silicone foam layer, wherein the double-sided tape is a mica tape made of two layers of fiberglass cloth sandwiched in the middle and bonded together with modified silicone pressure-sensitive adhesive.

[0007] Preferably, the preparation method of the modified silicone pressure-sensitive adhesive includes the following steps:

[0008] A. Dissolve ureapropyltriethoxysilane in anhydrous ethanol and stir thoroughly. Then add nano-silica and stir for 5-10 minutes. Let it stand for 2-3 hours to allow it to react fully. Then place it in an oven and dry it at 110-130℃ for 2-3 hours. After washing and drying, amino-modified nano-silica is prepared.

[0009] B. Add amino-modified nano-silica and ammonium polyphosphate to anhydrous ethanol and deionized water, turn on mechanical stirring, and heat to 75-90℃. At this temperature, reflux the reaction for 3-5 hours, then filter with deionized water and dry in an oven at 90-120℃ for 2-4 hours to prepare modified ammonium polyphosphate.

[0010] C. Dissolve montmorillonite in distilled water and stir. Heat in a water bath at 70-90°C for 20-30 minutes. Dissolve octadecyl quaternary ammonium salt in distilled water and add it to the montmorillonite solution in batches while stirring. Filter and wash with distilled water. Dry in an oven to constant weight. Grind and filter through a 200-mesh sieve to prepare nano-sized organic montmorillonite.

[0011] D. Take the modified ammonium polyphosphate obtained in step B and add it to a toluene and ethanol solution. Disperse it by ultrasonication at room temperature. Add the organo-modified montmorillonite obtained in step C and continue ultrasonication for 15-30 minutes. Then pour it into the organosilicon pressure-sensitive adhesive and treat it for 10-15 minutes under the combined action of mechanical stirring and ultrasonic vibration. Add benzoyl peroxide and continue stirring to dissolve it, thus preparing the modified organosilicon pressure-sensitive adhesive.

[0012] Preferably, the mass ratio of ureapropyltriethoxysilane, nano-silica, ammonium polyphosphate, and montmorillonite is 1-2:1-2:1:2-3.

[0013] Preferably, the method for manufacturing fire-resistant composite material includes the following steps: pumping ceramicized organosilicon foam material between two layers of double-sided tape, calendering it through a calender, sending the calendered blank into the drying tunnel through a conveyor belt, and then vulcanizing it. After vulcanization, the blank is cooled to room temperature and wound up to obtain the fire-resistant composite material.

[0014] Preferably, the calendering thickness is 0.5 to 5 mm.

[0015] Preferably, the vulcanization temperature in the vulcanization process is 90–180°C, and the vulcanization time is 5–20 min.

[0016] Preferably, the preparation method of the ceramicized organosilicon foam material includes the following steps:

[0017] S1. Take 30-60 parts of hydroxyl silicone oil with a viscosity of 500-10000 mPas, 10-30 parts of vinyl silicone oil with a viscosity of 1000-20000 mPas, 10-20 parts of zinc borate with a particle size of 2-50 μm, 10-20 parts of kaolin with a particle size of 2-50 μm, and 10-20 parts of montmorillonite with a particle size of 2-50 μm. Disperse them evenly with a planetary mixer, and then grind and disperse them with a three-roll mill to prepare component A.

[0018] S2. Take 30-60 parts of hydrogen-containing silicone oil with a viscosity of 500-10000 mPas, 10-20 parts of zinc borate with a particle size of 2-50 μm, 10-20 parts of kaolin with a particle size of 2-50 μm, and 10-20 parts of montmorillonite with a particle size of 2-50 μm. Disperse them evenly with a planetary mixer. Then add 0.5-2 parts of inhibitor and 0.1-2 parts of platinum catalyst. Then grind and disperse them with a three-roll mill to prepare component B.

[0019] S3. Mix component A obtained in step S1 and component B obtained in step S2 evenly to prepare a ceramicized organosilicon foam material.

[0020] Preferably, the inhibitor in step S2 is one or a combination of several of the following: methylbutynol, ethynylcyclohexanol, tert-butylcyclohexanol, phenylbutynol, 3,5-dimethyl-1-hexyn-3-ol, 3,6-dimethyl-1-heptyyn-3-ol, and 3,7,11-trimethyldodecyn-3-ol.

[0021] Preferably, the platinum catalyst in step S2 is a caster platinum catalyst with vinyl silicone oil as solvent, wherein the platinum content is 500-10000 ppm.

[0022] The beneficial effects of this invention are:

[0023] (1) This invention prepares a mica-organosilicon composite fireproof material with excellent fire resistance and mechanical properties, as well as resilience, by directly foaming between double-sided mica tapes. It can be used for high-temperature insulation at the contact position between the metal cover plate and the cell on the power battery PACK. The 0.5-5mm thick composite material can replace the 3D parts of the mica plate. It can also be used for fireproof insulation filling between lithium battery cells. At the same time, the density of the prepared fireproof composite material is much smaller than that of mica products alone, which is beneficial to the lightweighting of new energy vehicles. The fireproof composite material prepared by this invention does not require the use of PET film. The composite process of mica tape and ceramicized silicone rubber foam material is formed in one step, avoiding the problem that traditional organosilicon foam materials need to use PET film for top and bottom covering during the calendering process. The foamed PET film is difficult to reuse, resulting in high manufacturing costs. This helps to reduce industrial production costs.

[0024] (2) This invention utilizes ureapropyltriethoxysilane to treat nano-silica, which facilitates the dispersion of nano-silica. Simultaneously, through an ion exchange reaction, aminated nano-silica is grafted onto the surface of ammonium polyphosphate to obtain modified ammonium polyphosphate. The nano-silica and ammonium polyphosphate in the modified ammonium polyphosphate can synergistically retard flame, significantly improving the flame-retardant properties of the pressure-sensitive adhesive. This invention uses commercially available organosilicon pressure-sensitive adhesive as the matrix and modified ammonium polyphosphate and organo-modified montmorillonite as modifiers, enabling the composite material to possess excellent mechanical and flame-retardant properties. Both nano-silica and montmorillonite contain silicon, exhibiting better compatibility when mixed with organosilicon pressure-sensitive adhesive. Under ultrasonic oscillation, a solution blending method was used to prepare an organosilicon pressure-sensitive adhesive modified with modified ammonium polyphosphate and organo-modified montmorillonite. Nanoparticles form physical or chemical bonds with the pressure-sensitive adhesive through interfacial interactions, enhancing the interfacial bonding force between nano-silica and montmorillonite and the pressure-sensitive adhesive. This hinders the chain segment movement of the silicone pressure-sensitive adhesive when the temperature rises, thereby enhancing the thermal stability of the system. At the same time, since the modified ammonium polyphosphate and organo-modified montmorillonite themselves have certain heat resistance and thermal conductivity greater than that of the pressure-sensitive adhesive, they also improve the heat resistance of the silicone pressure-sensitive adhesive to a certain extent. The addition of modified ammonium polyphosphate and organo-modified montmorillonite enhances the wettability of the pressure-sensitive adhesive system and increases the contact area with the bonding substrate, thus improving the bonding strength of the silicone pressure-sensitive adhesive. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the fire-resistant composite material of the present invention;

[0027] Figure 2 This is a schematic diagram of the double-sided strip structure in the fireproof composite material of the present invention;

[0028] Figure 3 This is a schematic diagram of the fire-resistant composite material manufacturing method of the present invention. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Please refer to Figure 1-2The present invention provides a fireproof composite material, which includes a ceramicized silicone foam layer and double-sided tape disposed on both sides of the ceramicized silicone foam layer. The double-sided tape is a mica tape made of two layers of fiberglass cloth sandwiched in the middle and bonded together with a modified silicone pressure-sensitive adhesive.

[0031] Example 1: Preparation method of modified organosilicon pressure-sensitive adhesive, comprising the following steps:

[0032] A. Dissolve 5g of ureapropyltriethoxysilane in anhydrous ethanol and stir thoroughly. Then add 5g of nano-silica and stir for 5min. Let stand for 2h to allow it to react fully. Then put it in an oven and dry it at 110℃ for 2h. After washing and drying, amino-modified nano-silica is prepared.

[0033] B. Take aminated nano-silica and 5g of ammonium polyphosphate, add anhydrous ethanol and deionized water, turn on mechanical stirring, and heat to 75℃. At this temperature, reflux reaction is carried out for 3h, then filtered with deionized water and dried in a 90℃ oven for 4h to prepare modified ammonium polyphosphate.

[0034] C. Dissolve 10g of montmorillonite in distilled water and stir. Heat in a water bath at 70℃ for 20min. Take octadecyl quaternary ammonium salt, dissolve it in distilled water, and add it to the montmorillonite solution in batches while stirring. Filter and wash with distilled water. Place in an oven to dry to constant weight. Grind and filter through a 200-mesh sieve to prepare nano-sized organic montmorillonite.

[0035] D. Take the modified ammonium polyphosphate obtained in step B and add it to a toluene and ethanol solution. Disperse it by ultrasonication at room temperature. Add the organo-modified montmorillonite obtained in step C and continue ultrasonication for 15 minutes. Then pour it into the organosilicon pressure-sensitive adhesive and treat it for 10 minutes under the combined action of mechanical stirring and ultrasonic vibration. Add benzoyl peroxide and continue stirring to dissolve it to prepare the modified organosilicon pressure-sensitive adhesive.

[0036] Example 2: Preparation method of modified silicone pressure-sensitive adhesive, including the following steps:

[0037] A. Dissolve 3g of ureapropyltriethoxysilane in anhydrous ethanol and stir thoroughly. Then add 5g of nano-silica and stir for 8 minutes. Let stand for 2.5 hours to allow it to react fully. Then place it in an oven and dry at 120°C for 2 hours. After washing and drying, aminoated nano-silica is prepared.

[0038] B. Take aminated nano-silica and 3g of ammonium polyphosphate, add anhydrous ethanol and deionized water, turn on mechanical stirring, and heat to 85℃. At this temperature, reflux the reaction for 3h, then filter with deionized water and dry in an oven at 100℃ for 2h to prepare modified ammonium polyphosphate.

[0039] C. Dissolve 7g of montmorillonite in distilled water and stir. Heat in a water bath at 80℃ for 25min. Take octadecyl quaternary ammonium salt, dissolve it in distilled water, and add it to the montmorillonite solution in batches while stirring. Filter and wash with distilled water. Place in an oven to dry to constant weight. Grind and filter through a 200-mesh sieve to prepare nano-sized organic montmorillonite.

[0040] D. Take the modified ammonium polyphosphate obtained in step B and add it to a toluene and ethanol solution. Disperse it by ultrasonication at room temperature. Add the organo-modified montmorillonite obtained in step C and continue ultrasonication for 15 minutes. Then pour it into the organosilicon pressure-sensitive adhesive and treat it for 10 minutes under the combined action of mechanical stirring and ultrasonic vibration. Add benzoyl peroxide and continue stirring to dissolve it to prepare the modified organosilicon pressure-sensitive adhesive.

[0041] Example 3: Preparation method of modified silicone pressure-sensitive adhesive, including the following steps:

[0042] A. Dissolve 8g of ureapropyltriethoxysilane in anhydrous ethanol and stir thoroughly. Then add 10g of nano-silica and stir for 10min. Let stand for 3h to allow it to react fully. Then put it in an oven and dry it at 125℃ for 3h. After washing and drying, amino-modified nano-silica is prepared.

[0043] B. Take aminated nano-silica and 5g of ammonium polyphosphate, add anhydrous ethanol and deionized water, turn on mechanical stirring, and heat to 85℃. At this temperature, reflux the reaction for 4h, then filter with deionized water and dry in an oven at 120℃ for 2h to prepare modified ammonium polyphosphate.

[0044] C. Dissolve 12g of montmorillonite in distilled water and stir. Heat in a water bath at 85℃ for 30min. Take octadecyl quaternary ammonium salt, dissolve it in distilled water, and add it in batches to the montmorillonite solution while stirring. Filter and wash with distilled water. Place in an oven to dry to constant weight. Grind and filter through a 200-mesh sieve to prepare nano-sized organic montmorillonite.

[0045] D. Take the modified ammonium polyphosphate obtained in step B and add it to a toluene and ethanol solution. Disperse it by ultrasonication at room temperature. Add the organo-modified montmorillonite obtained in step C and continue ultrasonication for 25 minutes. Then pour it into the organosilicon pressure-sensitive adhesive and treat it for 15 minutes under the combined action of mechanical stirring and ultrasonic vibration. Add benzoyl peroxide and continue stirring to dissolve it, thus preparing the modified organosilicon pressure-sensitive adhesive.

[0046] Example 4: A method for preparing ceramicized organosilicon foam material, comprising the following steps:

[0047] S1. Take 30 parts of hydroxyl silicone oil with a viscosity of 500 mPas, 12 parts of vinyl silicone oil with a viscosity of 1000 mPas, 11 parts of zinc borate with a particle size of 10 μm, 10 parts of kaolin with a particle size of 8 μm, and 15 parts of montmorillonite with a particle size of 5 μm. Disperse them evenly with a planetary mixer, and then grind and disperse them with a three-roll mill to prepare component A.

[0048] S2. Take 31 components of hydrogen-containing silicone oil with a viscosity of 520 mPas, 10 components of zinc borate with a particle size of 5 μm, 12 components of kaolin with a particle size of 10 μm, and 12 components of montmorillonite with a particle size of 3 μm. Disperse them evenly with a planetary mixer. Then add 0.5 components of methylbutyninol and 0.1 components of caster platinum catalyst. Then grind and disperse them with a three-roll mill to prepare component B.

[0049] S3. Mix component A obtained in step S1 and component B obtained in step S2 evenly to prepare a ceramicized organosilicon foam material.

[0050] Example 5: A method for preparing ceramicized organosilicon foam material, comprising the following steps:

[0051] S1. Take 40 parts of hydroxyl silicone oil with a viscosity of 1000 mPas, 15 parts of vinyl silicone oil with a viscosity of 1200 mPas, 15 parts of zinc borate with a particle size of 20 μm, 12 parts of kaolin with a particle size of 20 μm, and 18 parts of montmorillonite with a particle size of 15 μm. Disperse them evenly with a planetary mixer, and then grind and disperse them with a three-roll mill to prepare component A.

[0052] S2. Take 40 parts of hydrogen-containing silicone oil with a viscosity of 1200 mPas, 18 parts of zinc borate with a particle size of 17 μm, 15 parts of kaolin with a particle size of 22 μm, and 13 parts of montmorillonite with a particle size of 32 μm. Disperse them evenly with a planetary mixer. Then add 1.1 parts of acetylenecyclohexanol and 0.5 parts of caster platinum catalyst. Then grind and disperse them with a three-roll mill to prepare component B.

[0053] S3. Mix component A obtained in step S1 and component B obtained in step S2 evenly to prepare a ceramicized organosilicon foam material.

[0054] Example 6: A method for preparing ceramicized organosilicon foam material, comprising the following steps:

[0055] S1. Take 58 parts of hydroxyl silicone oil with a viscosity of 2000 mPas, 30 parts of vinyl silicone oil with a viscosity of 2100 mPas, 18 parts of zinc borate with a particle size of 47 μm, 15 parts of kaolin with a particle size of 40 μm, and 20 parts of montmorillonite with a particle size of 50 μm. Disperse them evenly with a planetary mixer, and then grind and disperse them with a three-roll mill to prepare component A.

[0056] S2. Take 55 parts of hydrogen-containing silicone oil with a viscosity of 2500 mPas, 14 parts of zinc borate with a particle size of 45 μm, 17 parts of kaolin with a particle size of 41 μm, and 20 parts of montmorillonite with a particle size of 38 μm. Disperse them evenly with a planetary mixer. Then add 2 parts of tert-butylcyclohexanol and 2 parts of Castel platinum catalyst. Then grind and disperse them with a three-roll mill to prepare component B.

[0057] S3. Mix component A obtained in step S1 and component B obtained in step S2 evenly to prepare a ceramicized organosilicon foam material.

[0058] Please refer to Example 7 Figure 3 A method for manufacturing fire-resistant composite materials includes the following steps:

[0059] The ceramicized organosilicon foam material is pumped between two layers of double-sided tape and calendered using a calender to a thickness of 0.7 mm. The calendered blank is then conveyed into the drying tunnel via a conveyor belt and vulcanized at a temperature of 92°C for 10 minutes. After vulcanization, the material is cooled to room temperature and then wound up to obtain the fireproof composite material.

[0060] Example 8: A method for manufacturing fire-resistant composite materials, comprising the following steps:

[0061] The ceramicized organosilicon foam material is pumped between two layers of double-sided tape and calendered using a calender to a thickness of 2.3 mm. The calendered blank is then conveyed into the drying tunnel via a conveyor belt and vulcanized at a temperature of 120°C for 15 minutes. After vulcanization, the material is cooled to room temperature and then wound up to obtain the fireproof composite material.

[0062] Example 9: A method for manufacturing fire-resistant composite materials, comprising the following steps:

[0063] The ceramicized organosilicon foam material is pumped between two layers of double-sided tape and calendered using a calender to a thickness of 4.8 mm. The calendered blank is then conveyed into the drying tunnel via a conveyor belt and vulcanized at a temperature of 175°C for 18 minutes. After vulcanization, the material is cooled to room temperature and then wound up to obtain the fireproof composite material.

[0064] Performance testing

[0065] (1) The modified silicone pressure-sensitive adhesive prepared in Examples 1-3 and toluene were mixed evenly at a solid content of 50% and coated onto a PET film. After being left at room temperature for 24 hours, the solvent was allowed to evaporate and then dried at 70°C for 30 minutes. The initial tack, holding tack, 180° peel strength and shear strength were measured according to GB / T 4852-2002, GB / T4851-1998, GB / T 2792-1998 and GB / T 7754-1987 standards, respectively. The silicone pressure-sensitive adhesive sold in Changzhou Jinxin Chemical Co., Ltd. was used as a comparative example. The data results are shown in Table 1.

[0066] Table 1. Test results of sample performance

[0067]

[0068]

[0069] As can be seen from the data in Table 1, the modified silicone pressure-sensitive adhesives prepared in Examples 1-3 have lower initial tack compared to the comparative examples, but their holding power at 180°C, peel strength, and shear strength are significantly improved.

[0070] (2) The fire-retardant composite materials prepared in Examples 7-9 were subjected to flame retardant performance testing, electrical strength testing and high temperature resistance testing. The data results are shown in Table 2.

[0071] Flame retardant performance testing: The fire-retardant composite materials prepared in Examples 7-9 were subjected to limiting oxygen index (LOI) testing and vertical burning test (UL94). The limiting oxygen index (LOI) test was conducted using a JF-3 oxygen index meter according to GB / T 2406.2-2009, with sample dimensions of 100×6.5×3.2mm. 3 The vertical burning test (UL94) was conducted using a CZF-2 vertical burning tester, according to GB / T 2408-2008. The sample size was 100×12.7×3.2mm. 3 The data results are shown in Table 2.

[0072] Electrical strength test: The fire-resistant composite materials prepared in Examples 7-9 were tested according to GB / T 1408.1-2016, and the data results are shown in Table 2.

[0073] High temperature resistance test: The surface of the fireproof composite material prepared in Examples 7-9 was continuously burned with a flame at 1200℃, and the flame resistance time of the material was recorded. The data results are shown in Table 2.

[0074] Table 2 Result of Sample Performance Testing

[0075]

[0076] As can be seen from the data in Table 2, the fire-retardant composite materials prepared in Examples 7-9 can reach the UL94V-0 level in terms of flame retardancy. They do not crack after being burned in a flame at 1200℃ for about 30 minutes, and have strong flame resistance. Their electrical strength is greater than 20KV / mm, and they have good insulation properties.

[0077] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A fireproof composite material, characterized by, The composite material comprises a ceramicized organic silicon foaming layer and double-sided tapes arranged on both sides of the ceramicized organic silicon foaming layer, wherein the double-sided tape is a mica tape composed of upper and lower glass fiber cloth and a layer of mica paper in the middle, and the mica tape is obtained by modifying organic silicon pressure-sensitive adhesive; The preparation method of the modified organic silicon pressure-sensitive adhesive comprises the following steps: A. Dissolve ureidopropyl triethoxysilane in anhydrous ethanol and stir thoroughly, then add nano-silicon dioxide and stir for 5-10 min, stand for 2-3 h to allow full reaction, and then place in an oven at a temperature of 110-130 DEG C for drying for 2-3 h, and then wash and dry to obtain amino-nano-silicon dioxide; B. Add amino-nano-silicon dioxide and ammonium polyphosphate to anhydrous ethanol and deionized water, start mechanical stirring, and heat to 75-90 DEG C, and then condense and reflux at this temperature for 3-5 h, then filter with deionized water, and place in an oven at 90-120 DEG C for drying for 2-4 h to obtain modified ammonium polyphosphate; C. Dissolve montmorillonite in distilled water and stir, heat in a water bath at 70-90 DEG C for 20-30 min, dissolve octadecyl quaternary ammonium salt in distilled water, and then add to the montmorillonite solution in batches and stir, filter and wash with distilled water, and then place in an oven to dry to constant weight, grind, and sieve through a 200-mesh sieve to obtain nano-sized organic montmorillonite; D. Add the modified ammonium polyphosphate obtained in step B to a toluene and ethanol solution and ultrasonically disperse at room temperature, add the organic montmorillonite obtained in step C, continue to ultrasonically disperse for 15-30 min, then pour into the organic silicon pressure-sensitive adhesive, and treat under the combined action of mechanical stirring and ultrasonic oscillation for 10-15 min, then add dibenzoyl peroxide and continue to stir and dissolve to obtain modified organic silicon pressure-sensitive adhesive; The mass ratio of ureidopropyl triethoxysilane, nano-silicon dioxide, ammonium polyphosphate, and montmorillonite is 1-2:1-2:1:2-3.

2. The method of manufacturing a fireproof composite material according to claim 1, characterized by, The method comprises the following steps: pumping the ceramicized organic silicon foaming material between the two layers of double-sided tapes, calendering by a calendering machine, conveying the calendered blank into an oven by a conveying belt, then vulcanizing, and then cooling to room temperature, winding, and obtaining the fireproof composite material.

3. The method of manufacturing a fireproof composite material according to claim 2, characterized by, The calendering thickness of the calendering machine is 0.5-5 mm.

4. The method of manufacturing a fireproof composite material according to claim 2, characterized by, The vulcanization temperature in the vulcanization process is 90-180 DEG C, and the vulcanization time is 5-20 min.

5. The method of manufacturing a fireproof composite material according to claim 2, characterized by, The preparation method of the ceramicized organic silicon foaming material comprises the following steps: S1. Take 30-60 parts of hydroxyl silicone oil with a viscosity of 500-10000 mPas, 10-30 parts of vinyl silicone oil with a viscosity of 1000-20000 mPas, 10-20 parts of zinc borate with a particle size of 2-50 μm, 10-20 parts of kaolin with a particle size of 2-50 μm, and 10-20 parts of montmorillonite with a particle size of 2-50 μm, disperse uniformly by using a planetary mixer, and then grind and disperse by using a three-roll grinder to obtain component A; S2, take viscosity 500~10000 mPas hydrogen-containing silicone oil 30~60 components, particle size 2~50 μm zinc borate 10~20 components, particle size 2~50 μm kaolin 10~20 components, particle size 2~50 μm montmorillonite 10~20 components, using a planetary mixer to disperse evenly, then add inhibitor 0.5~2 components, platinum catalyst 0.1~2 components, then use three roll mill for grinding and dispersion, to prepare the B component; S3, the A component obtained in step S1 and the B component obtained in step S2 are mixed uniformly to prepare a ceramicized silicone foam material.

6. The method of manufacturing a fireproof composite material according to claim 5, characterized by, The inhibitor in step S2 is one or more combinations of methyl butynol, ethynyl cyclohexanol, tert-butyl cyclohexanol, phenyl butynol, 3,5-dimethyl-1-hexyne-3-ol, 3,6-dimethyl-1-heptyne-3-ol, 3,7,11-trimethyl dodecine-3-ol.

7. The method of manufacturing a fireproof composite material according to claim 5, characterized by, The platinum catalyst in step S2 is a cast platinum catalyst with vinyl silicone oil as the solvent, wherein the platinum content is 500~10000 ppm.

Citation Information

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