A kind of anti-aging organosilicon foam material and preparation method thereof

Abstract

The present application relates to the technical field of organosilicon foam materials, and in particular to an anti-aging organosilicon foam material, comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 8-12 parts by weight of low-viscosity vinyl silicone oil, 65-75 parts by weight of high-viscosity vinyl silicone oil, 15-25 parts by weight of hydroxy silicone oil, 0.8-1.2 parts by weight of filler, 0.08-0.15 parts by weight of platinum catalyst, and 15-25 parts by weight of polyarylethersulfone solution; the polyarylethersulfone solution is obtained by adding DMF to the polyarylethersulfone until the polyarylethersulfone is just completely dissolved, and the molecular structure of the polyarylethersulfone contains double bonds; the component B comprises the following raw materials in parts by weight: 8-12 parts by weight of low-viscosity vinyl silicone oil, 85-95 parts by weight of high-viscosity vinyl silicone oil, 85-95 parts by weight of hydrogenated silicone oil, and 2-4 parts by weight of filler; the organosilicon foam material has the advantage of improving the aging resistance of the organosilicon foam material.

Description

Technical Field

[0001] The present application relates to the technical field of organosilicon foam materials, and in particular to an anti-aging organosilicon foam material and a preparation method thereof. Background Art

[0002] Silicone foam, also known as silicone rubber foam, is a porous, viscoelastic polymer material with advantages such as high and low temperature resistance, high flexibility, lightweight, sound and heat insulation, and shock absorption. It is widely used in aerospace, automotive manufacturing, new energy development, electronics, defense and military industries, and daily life. In new energy vehicles, silicone foam is used to fill the space between battery cells and casings, as well as between adjacent cells, to buffer the battery's expansion and contraction during charging and discharging. However, during battery operation, heat release can promote oxygen diffusion and accelerate the material's oxidation reaction, which in turn accelerates the deformation and aging of the silicone foam, reducing its buffering capacity and thus affecting the battery's lifespan. Summary of the Invention

[0003] In order to improve the aging resistance of organosilicon foam materials, the present application provides an aging-resistant organosilicon foam material and a preparation method thereof.

[0004] In a first aspect, the present application provides an anti-aging organic silicone foam material, which adopts the following technical solution:

[0005] An anti-aging organosilicon foam material comprises a component A and a component B. Component A comprises the following raw materials in parts by weight: 8-12 parts by weight of low-viscosity vinyl silicone oil, 65-75 parts by weight of high-viscosity vinyl silicone oil, 15-25 parts by weight of hydroxy silicone oil, 0.8-1.2 parts by weight of filler, 0.08-0.15 parts by weight of platinum catalyst, and 15-25 parts by weight of polyarylethersulfone solution. The polyarylethersulfone solution is obtained by adding DMF to polyarylethersulfone until the polyarylethersulfone is completely dissolved. The molecular structure of the polyarylethersulfone contains double bonds.

[0006] The B component includes the following raw materials in parts by weight: 8-12 parts by weight of low-viscosity vinyl silicone oil, 85-95 parts by weight of high-viscosity vinyl silicone oil, 85-95 parts by weight of hydrogenated silicone oil, and 2-4 parts by weight of filler.

[0007] By adopting the above technical solution, polyarylethersulfone resin generally refers to a class of polymers whose backbone contains groups such as sulfone groups, arylene groups, and ether bonds. The sulfone groups and benzene rings within these resins impart excellent stiffness and hardness. Furthermore, the diphenylsulfone groups, composed of sulfone groups and benzene rings within their molecular chains, enhance their high-temperature and oxidation resistance. Therefore, polyarylethersulfone possesses inherent characteristics of high stiffness and heat resistance. Furthermore, polyarylethersulfone is a flame-retardant organic polymer, producing minimal smoke even when burned. The inventors added polyaryletherketone to the silicone system to prepare foaming materials, which improved the aging resistance and mechanical strength of the materials. However, the insolubility and excessive rigidity of polyaryletherketone caused the silicone material to be too rigid, affecting its elasticity, which was not conducive to the application of the foaming material. Therefore, the inventors of this application designed the molecular structure of polyarylethersulfone resin and designed a preparation method so that its molecules contained double bonds. Based on its insolubility, it was dissolved in DMF so that it participated in the cross-linking reaction of the silicone foaming material in a dissolved state, thereby realizing its modification of the silicone foaming material, improving the aging resistance and mechanical strength of the silicone foaming material while maintaining good elasticity.

[0008] As a preference: the preparation method of the polyarylethersulfone is as follows:

[0009] Using sulfolane as solvent, xylene as dehydrating agent, and anhydrous potassium carbonate as catalyst, 4,4'-difluorodiphenyl sulfone, bisphenol containing double bonds, and HO-Ar-OH are refluxed at 160-180°C for 2-4 hours, and then the system is heated to 190-210°C and stirred for 6.5-10 hours to obtain polyarylethersulfone;

[0010] The total molar amount of the double-bond-containing bisphenol and HO-Ar-OH is the same as the molar amount of 4,4'-difluorodiphenyl sulfone.

[0011] By adopting the above technical solution, the phenolic hydroxyl group replaces the fluorine atom in the 4,4'-difluorodiphenyl sulfone molecule through a nucleophilic substitution reaction, thereby forming a polymer chain structure.

[0012] Preferably, the molar ratio of the double bond-containing bisphenol to the HO-Ar-OH is 1:4-6; more preferably, the molar ratio is 1:5.

[0013] By adopting the above technical solution, as the amount of double-bond-containing bisphenol added increases, the compressive and tensile strengths of the silicone foam material are improved, and the height deformation shows a trend of first decreasing and then increasing. It is speculated that the higher the addition amount, the greater the crosslinking density within the silicone foam material, thereby improving its mechanical strength; the increased crosslinking density facilitates the integration of the polyarylethersulfone into the system, helping to reduce the height deformation of the silicone foam material; however, excessive crosslinking density makes the silicone foam material too rigid and reduces its elasticity, resulting in an increase in its height deformation, which is not conducive to its application as a cushioning material. The applicant used the prepared polyarylethersulfone in a silicone rubber system to participate in crosslinking, maintaining an unexpectedly lower height deformation within the above range.

[0014] Preferably, the HO-Ar-OH is one or more of bisphenol A, bisphenol Z, biphenol and bisphenol S.

[0015] By adopting the above technical solution, HO-Ar-OH can theoretically be selected from any one or several within this range, but not all of them were tested in the examples of this application.

[0016] Preferably, the bisphenol containing double bonds is 2,2'-diallylbisphenol A.

[0017] By adopting the above technical solution, the molecular structure of 2,2'-diallyl bisphenol A contains two double bonds, which can increase its reactivity, improve the crosslinking density of the silicone foam material, and improve the reaction compatibility between polyarylethersulfone and the system.

[0018] Preferably, the filler is fumed silica.

[0019] By adopting the above technical solution, fumed silica can be well applied to this system as an excellent reinforcing filler.

[0020] Preferably, the surface of the fumed silica is modified simultaneously by a double-bond-containing silane coupling agent and a phenyl-containing silane coupling agent.

[0021] By adopting the above technical solution, the fumed silica is modified by a double-bond-containing silane coupling agent so that its surface has double bonds, which can not only participate in the cross-linking reaction of the silicone foam material, but also improve its dispersibility in the system. Under the action of these two aspects, the mechanical strength of the silicone foam material is improved, and its distribution is uniform, so that the limiting oxygen index is improved to a certain extent.

[0022] The inventors discovered that when fumed silica modified with both a double-bond silane coupling agent and a phenyl-containing silane coupling agent and double-bond poly(arylethersulfone) are added to an organosilicon to prepare a foamed material, unexpectedly excellent aging resistance and mechanical properties are achieved. This is likely due to the poly(arylethersulfone) participating in cross-linking to form a cross-linked network containing benzene rings, which improves high-temperature aging resistance and strength. Meanwhile, the modified fumed silica participates in cross-linking to form linear phenyl-containing chain segments. These linear segments have a high degree of freedom and are evenly dispersed in the system, filling the phenyl-containing cross-linked network to a certain extent. The molecular entanglement helps to improve tensile strength and elasticity. Therefore, the combined use of these two components improves the overall aging resistance, elasticity, and mechanical properties of the material.

[0023] Preferably, the double bond-containing silane coupling agent is one or more of vinyl trisbutyl ketoxime silane, 7-octenyltrimethoxysilane, vinyl triethoxysilane, acryloxymethyl trimethoxysilane, γ-methacryloxypropyl trimethoxysilane and vinyl triisopropoxysilane; and the phenyl-containing silane coupling agent is one or two of phenyl triethoxysilane and phenyl trimethoxysilane.

[0024] Preferably, the double-bond-containing silane coupling agent is 7-octenyltrimethoxysilane, which is used to modify silica to prepare a foam material with better aging resistance. The linear phenyl-containing chain segments provided by 7-octenyltrimethoxysilane in the system are more conducive to filling the phenyl groups in the cross-linked network, thereby improving aging resistance.

[0025] In a second aspect, the present application provides a method for preparing an anti-aging organosilicon foam material, which adopts the following technical solution: A method for preparing an anti-aging organosilicon foam material, comprising the following steps:

[0026] S1. Stirring and mixing the low-viscosity vinyl silicone oil, high-viscosity vinyl silicone oil, hydroxy silicone oil, filler, platinum catalyst and polyarylethersulfone solution in component A to obtain a component A mixture;

[0027] S2, stirring and mixing the low-viscosity vinyl silicone oil, high-viscosity vinyl silicone oil, hydrogenated silicone oil and filler of component B to obtain a mixture of component B;

[0028] S3. Add the mixed material of component A and the mixed material of component B in a mass ratio of (9-11):1, stir and mix at (-10) to 5°C to obtain a foaming rubber material, vulcanize and foam the foaming rubber material at a low temperature of 55-65°C, and then vulcanize it at a high temperature. The temperature vulcanization is divided into three gradients, and the target temperatures are set to 70-80°C, 100-110°C, and 130-140°C, respectively. Finally, vulcanize it at 135°C to obtain an anti-aging silicone foam material.

[0029] By adopting the above technical solution, the preparation method of the present application is relatively conventional, does not require special processes or equipment improvements, is highly tolerant to process parameters, and the qualified rate of the products obtained is 95% or above, which is suitable for large-scale production.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. By designing the molecular structure of polyarylethersulfone resin and designing a preparation method, the molecule contains double bonds. Based on its insolubility, it is dissolved in DMF and allowed to participate in the cross-linking reaction of the silicone foam material in a dissolved state, thereby realizing its modification of the silicone foam material and greatly improving the high-temperature resistance of the silicone foam material.

[0032] 2. The compressive strength of the organosilicon foam material prepared in the present application is moderate, the tensile strength is good, and at the same time, its aging resistance is excellent. Its height deformation is 2.5% or less, and the minimum can reach 1.0%, and its limiting oxygen index is 29.8% or above, and the maximum can reach 32.5%; the organosilicon foam material prepared in the present application has great application potential in the battery application of new energy vehicles. DETAILED DESCRIPTION

[0033] The following is a further detailed description of this application in conjunction with the specific content.

[0034] raw material

[0035] The raw materials used in the preparation examples and embodiments of this application were all purchased from commercial sources, among which the viscosity of low-viscosity vinyl silicone oil is 350 mPa.s; the viscosity of high-viscosity vinyl silicone oil is 25,000 mPa.s; the viscosity of hydroxyl silicone oil is 1,000 mPa.s; fumed silica was purchased from Shanghai Yunhe Materials Co., Ltd.; and the platinum catalyst was purchased from Dongguan Zhongxin Silicone Materials Co., Ltd.

[0036] Preparation Example

[0037] Preparation Example 1

[0038] A polyarylethersulfone solution, the preparation method of which is as follows:

[0039] 0.12 mol of 4,4'-difluorodiphenyl sulfone, 2,2'-diallylbisphenol A, biphenylene and 0.14 mol of anhydrous potassium carbonate were added to 150 g of sulfolane, and then 100 g of xylene was added as a dehydrating agent and stirred until dissolved; then, under a nitrogen atmosphere, a water separator was installed, the temperature was raised to 170°C, and the reaction was refluxed for 2.5 hours to carry out a sufficient salt-forming reaction; then, the reaction system was heated to 200°C and stirred for 7 hours; the total molar amount of 2,2'-diallylbisphenol A and biphenylene was 0.12 mol, and the molar ratio of 2,2'-diallylbisphenol A to biphenylene was 1:6;

[0040] After the reaction liquid drops below 50°C, 200g of 50°C deionized water polymer is added to obtain a precipitate, which is washed three times with ethanol and deionized water respectively, and then dried to obtain polyaryl ether sulfone. DMF is then added to the polyaryl ether sulfone and stirred until the polyaryl ether sulfone is just completely dissolved to obtain a polyaryl ether sulfone solution.

[0041] Preparation Example 2

[0042] A polyarylethersulfone solution is prepared, which differs from Preparation Example 1 in that the molar ratio of 2,2'-diallylbisphenol A to biphenyldiphenol is 1:5, and the remaining steps are the same as those of Preparation Example 1.

[0043] Preparation Example 3

[0044] A polyarylethersulfone solution is prepared, which differs from Preparation Example 1 in that the molar ratio of 2,2'-diallylbisphenol A to biphenyldiphenol is 1:4, and the remaining steps are the same as Preparation Example 1.

[0045] Example

[0046] Example 1

[0047] An anti-aging organosilicon foam material comprises a component A and a component B, wherein the component A comprises 10 g of low-viscosity vinyl silicone oil, 70 g of high-viscosity vinyl silicone oil, 20 g of hydroxy silicone oil, 1 g of filler, 0.1 g of platinum catalyst, and 20 g of polyarylethersulfone solution; the component B comprises 10 g of low-viscosity vinyl silicone oil, 90 g of high-viscosity vinyl silicone oil, 88 g of hydrogenated silicone oil, and 3.5 g of filler; wherein the polyarylethersulfone solution is from Preparation Example 1; and the filler is fumed silica.

[0048] The preparation method of the anti-aging silicone foam material is as follows:

[0049] S1. Weigh the raw materials according to the formula of component A, and then put the low-viscosity vinyl silicone oil, high-viscosity vinyl silicone oil, hydroxy silicone oil, filler, platinum catalyst and polyarylethersulfone solution into a non-invasive material homogenizer at a speed of 1600 r / min for 200 s to obtain a mixture of component A;

[0050] S2. Weigh the raw materials according to the formula of component B, then put the low-viscosity vinyl silicone oil, high-viscosity vinyl silicone oil, hydrogen-containing silicone oil and filler into a non-invasive material homogenizer at a speed of 1600 r / min and mix for 150 s to obtain a mixture of component B;

[0051] S3. Put the mixture of component A and component B into a non-invasive material homogenizer at a mass ratio of 10:1, mix at 0°C and a rotation speed of 1800r / min for 120s to obtain a foamed rubber material, transfer the foamed rubber material to a polytetrafluoroethylene mold, and vulcanize and foam at a low temperature of 60°C for 30min, then vulcanize at a high temperature. The temperature vulcanization is divided into 3 gradients, and the target temperatures are set to 75°C, 105°C, and 135°C respectively. Stay at each target temperature point for 5min, and finally vulcanize at 135°C for 1h to obtain an anti-aging silicone foam material.

[0052] Example 2

[0053] An anti-aging organosilicon foam material is different from Example 1 in that the polyarylethersulfone solution is from Preparation Example 2, and the remaining steps are the same as those of Example 1.

[0054] Example 3

[0055] An anti-aging organosilicon foam material is different from Example 1 in that the polyarylethersulfone solution is from Preparation Example 3, and the remaining steps are the same as Example 1.

[0056] Example 4

[0057] An anti-aging organosilicon foam material is different from Example 2 in that its fumed silica is modified fumed silica of equal mass, and the preparation method of the modified fumed silica is as follows:

[0058] 1.5 g of fumed silica was added to 100 mL of ethanol-water solution, where the ethanol-water solution was a mixed solution of ethanol and water in a volume ratio of 1:1. After ultrasonic dispersion, 3 g of vinyltriethoxysilane was added. The temperature was raised to 70° C. and the mixture was stirred for reaction for 8 h. The mixture was filtered, washed, and dried to obtain modified fumed silica.

[0059] Example 5

[0060] An anti-aging organosilicon foam material is different from Example 2 in that its fumed silica is modified fumed silica of equal mass, and the preparation method of the modified fumed silica is as follows:

[0061] 1.5 g of fumed silica was added to 100 mL of ethanol-water solution, where the ethanol-water solution was a mixed solution of ethanol and water in a volume ratio of 1:1. After ultrasonic dispersion, 3 g of phenyltriethoxysilane was added. The temperature was raised to 70° C. and the mixture was stirred for reaction for 8 h. The mixture was filtered, washed, and dried to obtain modified fumed silica.

[0062] Example 6

[0063] An anti-aging organosilicon foam material is different from Example 2 in that its fumed silica is modified fumed silica of equal mass, and the preparation method of the modified fumed silica is as follows:

[0064] 1.5 g of fumed silica was added to 100 mL of ethanol-water solution, where the ethanol-water solution was a mixed solution of ethanol and water in a volume ratio of 1:1. After ultrasonic dispersion, 1.5 g of vinyltriethoxysilane and 1.5 g of phenyltriethoxysilane were added. The temperature was raised to 70° C. and the mixture was stirred for reaction for 8 h. The mixture was filtered, washed, and dried to obtain modified fumed silica.

[0065] Example 7

[0066] An anti-aging organosilicon foam material is different from Example 2 in that its fumed silica is modified fumed silica of equal mass, and the preparation method of the modified fumed silica is as follows:

[0067] 1.5 g of fumed silica was added to 100 mL of ethanol-water solution, where the ethanol-water solution was a mixed solution of ethanol and water in a volume ratio of 1:1. After ultrasonic dispersion, 1.5 g of 7-octenyltrimethoxysilane and 1.5 g of phenyltriethoxysilane were added. The temperature was raised to 70°C, and the reaction was stirred for 8 hours. The mixture was filtered, washed, and dried to obtain modified fumed silica.

[0068] Comparative Example

[0069] Comparative Example 1

[0070] An anti-aging organic silicon foam material is different from Example 1 in that its polyarylethersulfone solution is replaced by high-viscosity vinyl silicone oil of equal mass, and the remaining steps are the same as Example 1.

[0071] Comparative Example 2

[0072] An anti-aging organic silicon foam material is different from Example 7 in that the polyarylethersulfone solution is replaced by modified fumed silica of equal mass, and the remaining steps are the same as Example 7.

[0073] Comparative Example 3

[0074] An anti-aging organosilicon foam material is different from Example 7 in that the modified fumed silica is replaced by an equal mass of polyarylethersulfone solution, and the remaining steps are the same as Example 7.

[0075] Performance testing

[0076] Detection method / test method

[0077] Anti-aging organosilicon foam materials were prepared according to the preparation methods of Examples 1-7 and Comparative Examples 1-3, and then tested according to the following test method. The test results are shown in Table 1.

[0078] Compression strength: tested according to the test method in GB / T1041-92;

[0079] Tensile strength: tested according to the test method in GB / T528-2009, the sample is dumbbell-shaped, and the tensile rate is 100mm / min;

[0080] Aging resistance: According to the experimental method in GB / T7759.1-2015, the foamed silicone material was first compressed using a compression setter. The specimen loaded with 50% strain was then placed in a 150°C oven for accelerated aging for 10 days. The specimen was then released and allowed to recover at room temperature for 24 hours. The height deformation (C) of the foamed silicone was calculated as follows: C = [(h0 - h1) / (h0 - Hs)] × 100%, where h0 is the height of the specimen before aging, h1 is the height of the specimen after aging, and Hs is the height of the fixture limiter. A larger C value indicates a worse aging resistance of the foamed silicone.

[0081] Limiting oxygen index: tested according to the test method in GB / T2406.2-2009.

[0082] Table 1 Test results of Examples 1-7 and Comparative Examples 1-3

[0083]

[0084] It can be seen from Examples 1-7 and Comparative Examples 1-3, as well as the test data in Table 2, that the organosilicon foam material prepared in the present application has moderate compressive strength and good tensile strength. At the same time, its aging resistance is excellent, its height deformation is 2.0% or less, and the minimum can reach 1.1%, and its limiting oxygen index is 31.2% or more, and the maximum can reach 31.8%. The organosilicon foam material prepared in the present application has great application potential in battery applications for new energy vehicles.

[0085] Polyarylethersulfone resin generally refers to a class of high molecular polymers whose main chain contains groups such as sulfone groups, arylene groups and ether bonds. Among them, the sulfone groups and benzene ring groups contained therein give the polyarylether resin excellent rigidity and hardness. At the same time, the diphenylsulfone groups composed of sulfone groups and benzene rings in its molecular chain can also increase its high temperature resistance and oxidation resistance. Therefore, polyarylethersulfone has the inherent characteristics of high rigidity and high heat resistance. In addition, polyarylethersulfone is a flame-retardant organic polymer. Even if it burns, the amount of smoke is very small. The inventors of the present application designed the molecular structure of polyarylethersulfone resin and designed a preparation method so that its molecules contain double bonds. Based on its insolubility, it is dissolved in DMF so that it participates in the cross-linking reaction of the organosilicon foam material in a dissolved state to achieve its modification of the organosilicon foam material, thereby greatly improving the high temperature resistance of the organosilicon foam material. This can be seen from the test data of Example 1 and Comparative Example 1. Combined with the test data from Examples 2-3, it can be seen that increasing the amount of 2,2'-diallylbisphenol A added during the preparation of polyarylethersulfone (PES) increases the compressive and tensile strengths of the silicone foam, while the height deformation shows a trend of initially decreasing and then increasing. It is hypothesized that this is because a higher PES addition increases the crosslink density within the silicone foam, thereby improving its mechanical strength. This increased crosslink density facilitates the integration of the PES with the system, helping to reduce the height deformation of the silicone foam. However, excessive crosslink density increases the rigidity of the silicone foam, reduces its elasticity, and increases its height deformation, making it unsuitable for use as a cushioning material.

[0086] It can be seen from the test data of Examples 2 and 4-5 that by modifying the fumed silica, the tensile strength, compressive strength and aging resistance of the material are improved to a certain extent; it can be seen from the test data of Examples 4-6 that the silane coupling agent containing a double bond and the silane coupling agent containing phenyl are used to modify the fumed silica. Compared with a single modification, its tensile strength, compressive strength and aging resistance are improved. This may be due to the fact that the modified fumed silica can obtain a linear segment containing phenyl while participating in cross-linking. It has a high degree of freedom in the system and is evenly dispersed. It can fill a certain amount of phenyl to the cross-linked network containing phenyl. The entanglement of the molecules is conducive to improving the tensile strength and is conducive to the improvement of elasticity, thereby improving the aging resistance, elasticity and mechanical properties of the entire material by using the two components together. It can be seen from Examples 6 and 7 that the linear phenyl-containing segment provided by 7-octenyltrimethoxysilane in the system is longer, more conducive to filling the phenyl in the cross-linked network, improving the molecular entanglement effect, and improving the performance such as aging resistance.

[0087] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An anti-aging silicone foam material, characterized by: The invention comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 8-12 parts by weight of low-viscosity vinyl silicone oil, 65-75 parts by weight of high-viscosity vinyl silicone oil, 15-25 parts by weight of hydroxy silicone oil, 0.8-1.2 parts by weight of filler, 0.08-0.15 parts by weight of platinum catalyst, and 15-25 parts by weight of polyarylethersulfone solution; the polyarylethersulfone solution is obtained by adding DMF to the polyarylethersulfone until the polyarylethersulfone is completely dissolved, and the molecular structure of the polyarylethersulfone contains double bonds; The B component comprises the following raw materials in parts by weight: 8-12 parts by weight of low-viscosity vinyl silicone oil, 85-95 parts by weight of high-viscosity vinyl silicone oil, 85-95 parts by weight of hydrogenated silicone oil, and 2-4 parts by weight of filler; The preparation method of the polyarylethersulfone is as follows: Using sulfolane as solvent, xylene as dehydrating agent, and anhydrous potassium carbonate as catalyst, 4,4'-difluorodiphenyl sulfone, bisphenol containing double bonds, and HO-Ar-OH are refluxed at 160-180°C for 2-4 hours, and then the system is heated to 190-210°C and stirred for 6.5-10 hours to obtain polyarylethersulfone; The total molar amount of the double-bond-containing bisphenol and HO-Ar-OH is the same as the molar amount of 4,4'-difluorodiphenyl sulfone; The filler is fumed silica, and the surface of the fumed silica is modified simultaneously by a silane coupling agent containing a double bond and a silane coupling agent containing a phenyl group.

2. The anti-aging organosilicon foam material according to claim 1, characterized in that: The molar ratio of the double bond-containing bisphenol to the HO-Ar-OH is 1:

5.

3. The anti-aging organosilicon foam material according to claim 1, characterized in that: The HO-Ar-OH is one or more of bisphenol A, bisphenol Z, biphenol and bisphenol S.

4. The anti-aging organosilicon foam material according to claim 1, characterized in that: The double bond-containing bisphenol is 2,2'-diallylbisphenol A.

5. The anti-aging organosilicon foam material according to claim 1, characterized in that: The double bond-containing silane coupling agent is one or more of vinyl tributylon oxime silane, 7-octenyltrimethoxysilane, vinyl triethoxysilane, acryloxymethyl trimethoxysilane, γ-methacryloxypropyl trimethoxysilane and vinyl triisopropoxysilane; the phenyl-containing silane coupling agent is one or two of phenyl triethoxysilane and phenyl trimethoxysilane.

6. A method for preparing the anti-aging organosilicon foam material according to any one of claims 1 to 5, characterized in that: It includes the following steps: S1. Stirring and mixing the low-viscosity vinyl silicone oil, high-viscosity vinyl silicone oil, hydroxy silicone oil, filler, platinum catalyst and polyarylethersulfone solution in component A to obtain a component A mixture; S2, stirring and mixing the low-viscosity vinyl silicone oil, high-viscosity vinyl silicone oil, hydrogenated silicone oil and filler of component B to obtain a mixture of component B; S3. Add the mixed material of component A and the mixed material of component B in a mass ratio of (9-11):1, stir and mix at -10 to 5°C to obtain a foaming rubber material, vulcanize and foam the foaming rubber material at a low temperature of 55-65°C, and then vulcanize it at a high temperature. The temperature vulcanization is divided into three gradients, and the target temperatures are set to 70-80°C, 100-110°C, and 130-140°C, respectively. Finally, vulcanize it at 135°C to obtain an anti-aging silicone foam material.

Images