High-damping silica gel film and preparation method thereof

Abstract

The invention relates to the field of silica gel materials, in particular to a high-damping silica gel film and a preparation method thereof. The silicon-containing mixture is prepared from the following raw materials in percentage by weight: 10 to 30 percent of vinyl silicon resin, 10 to 20 percent of alkenyl-terminated silane polyisobutene, 0.1 to 2 percent of cross-linking agent, 1.0 to 2.5 percent of catalyst, 0.1 to 0.5 percent of inhibitor, 0.5 to 5 percent of processing aid and the balance of alkylene silicon rubber. By adopting the technical scheme, a high-damping material containing an alkenyl-terminated silane polyisobutylene structure is introduced into a silicone rubber polymer molecular chain, so that the damping performance of a silicone gel film is improved, the high stability and good damping performance of the silicone gel film are kept in a wider use temperature range, and meanwhile, better mechanical properties are obtained.

Description

Technical Field

[0001] The present application relates to the field of silicone materials, and more specifically, to a high-damping silicone gel film and a preparation method thereof. Background Art

[0002] With the progress of society and the rapid development of science and technology, more and more cushioning materials are being applied to production practices. In the field of electronic information products, with the expansion of production scale and the increase in export volume, the demand for cushioning pads has also grown rapidly. As an important component in electronic information products, the buffer layer of the OLED display module is crucial to the protection of the display panel. At the same time, polymer mechanical damping materials, as a functional material that can buffer impact and eliminate vibration, are widely used in many fields such as rockets, missiles, artificial satellites, precision machine tools, and precision instruments. Silicone rubber has become a material that has attracted much attention due to its excellent low-temperature and high-temperature resistance, as well as its stable mechanical properties and damping properties over a wide temperature range. However, the existing related materials still have some shortcomings and need further improvement and perfection.

[0003] Regarding cushioning materials, the buffer layer of OLED display modules currently primarily utilizes foamed cotton with a PET substrate. In the field of polymer mechanical damping materials, viscoelastic damping materials are primarily rubber-based. Polyisobutylene rubber (PIBR) offers high damping and vibration reduction capabilities due to its molecular structure, but its effective damping range is limited. Silicone rubber modification technology currently primarily involves mechanically and physically blending PIB with silicone rubber with the addition of a coupling agent. Furthermore, the performance of existing modified silicone systems still needs to be improved.

[0004] However, the existing technology has obvious defects. The foamed cotton with PET substrate has the problem of thickness and cushioning conflicting with each other, which limits its further development. The effective damping function area of ​​polyisobutylene rubber is mainly concentrated at lower temperatures, and it almost loses its damping function at higher temperatures. In addition, its non-polar nature makes it difficult to blend with other polymer materials and bond with metals. The modification method of adding coupling agents for mechanical and physical blending, although it improves the compatibility of polyisobutylene and silicone rubber to a certain extent, the damping performance is not high, and it is easy to have abnormalities during use, so performance improvement is needed. Summary of the Invention

[0005] In order to obtain higher damping performance and mechanical properties while ensuring that it still has better damping effect at higher temperatures, the present application provides a high-damping silicone gel film and a preparation method thereof.

[0006] In a first aspect, a high-damping silicone gel film is obtained by diluting a silicon-containing mixture in a diluent, wherein the silicon-containing mixture is composed of the following raw materials in the following weight percentages: 10-30% vinyl silicone resin, 10-20% terminal olefin silane polyisobutylene, 0.1-2% cross-linking agent, 1.0-2.5% catalyst, 0.1-0.5% inhibitor, 0.5-5% processing aid, and the balance being olefin-based silicone rubber.

[0007] By adopting the above-mentioned technical solution, a high-damping material containing a terminal alkenyl silane polyisobutylene structure is introduced into the silicone rubber polymer molecular chain, so that the high-damping structural unit is evenly distributed and stably present in the silicone rubber pressure-sensitive adhesive with a wide operating temperature range, without phase separation or stratification, and the high-damping function is fully and stably exerted, with a high-efficiency, stable and wide-temperature-range high-damping effect. Then, through the proportion of each component in this application, the damping performance of the silicone gel film is improved, so that it maintains high stability and good damping performance in a wider operating temperature range, while obtaining better mechanical properties.

[0008] Specifically, the high-damping silicone gel film obtained in this application has a damping loss factor of 1.05-1.36 at 25°C and a damping loss factor of 0.78-1.21 at 85°C, and an elongation at break of more than 1500%. Furthermore, as the temperature increases, the damping loss factor decreases less.

[0009] Preferably, the processing aid is an antistatic agent.

[0010] By adopting the above-mentioned technical solution and using an antistatic agent as a processing aid, the surface resistivity of the silicone gel film can be further reduced, and the adsorption of environmental impurities during the bonding process can be reduced. At the same time, the silicone gel film can have a high-efficiency, stable and high-damping effect in a wide temperature range, thereby improving its damping performance, maintaining high stability and good damping performance in a wide operating temperature range, and maintaining the bonding strength of the material.

[0011] Preferably, the antistatic agent is multi-walled carbon nanotubes and / or single-walled carbon nanotubes.

[0012] By adopting the above technical solution, a high-damping silicone gel film is prepared by diluting a silicon-containing mixture containing a specific proportion of olefin-based silicone rubber, vinyl silicone resin, terminal olefin-silane polyisobutylene, cross-linking agent, catalyst, inhibitor, and processing aid in a diluent. This can improve the damping performance of the material, expand the damping functional zone to a higher temperature, and enable the material to have a wide operating temperature range. The high-damping structural units are evenly and stably distributed without phase separation or stratification, and the high-damping function is fully and stably exerted; setting the processing aid as an antistatic agent can reduce the adsorption of environmental impurities during the bonding process; using multi-walled carbon nanotubes and / or single-walled carbon nanotubes as antistatic agents can further reduce the surface resistivity of the silicone gel film.

[0013] Preferably, the relative molecular mass of the olefin-based silicone rubber is 150,000-500,000.

[0014] By adopting the above technical solution, the relative molecular mass of olefin-based silicone rubber can be reasonably controlled within 150,000-500,000, which helps to further optimize the mechanical properties and operating temperature range of the silicone gel membrane. In combination with other raw materials in the silicon-containing mixture, the silicone gel membrane can have a high-efficiency, stable and high-damping effect in a wide temperature range, maintain the bonding strength of the material, and maintain high stability and good damping performance in a wider operating temperature range.

[0015] Preferably, the crosslinking agent is end-side hydrogen-containing silicone oil.

[0016] By adopting the above technical solution, the raw materials of the silicon-containing mixture are mixed in proportion and diluted with a diluent to form a high-damping silicone gel film, wherein the use of terminal olefinic silane polyisobutylene can make the high-damping structural units evenly distributed and stably present in the silicone rubber pressure-sensitive adhesive with a wide operating temperature range, so that the silicone gel film has a high-efficiency, stable and high-damping effect in a wide temperature range; the use of end-side hydrogenated silicone oil as a cross-linking agent can optimize the cross-linking density, ensuring that the material still maintains good flexibility and damping effect at high and low temperatures.

[0017] Preferably, the catalyst is a platinum catalyst.

[0018] By adopting the above technical solution, in a solution in which a silicon-containing mixture composed of olefin-based silicone rubber, vinyl silicone resin, terminal olefin-silane polyisobutylene, a crosslinker, a catalyst, an inhibitor, and a processing aid is diluted in a diluent to prepare a high-damping silicone gel film, the use of a platinum catalyst can promote the efficient cross-linking reaction while reducing the impact of catalyst residues on material properties.

[0019] Preferably, the inhibitor is acetylene alcohol.

[0020] By adopting the above technical solution, a high-damping silicone gel membrane is prepared by diluting a silicon-containing mixture composed of olefin-based silicone rubber, vinyl silicone resin, terminal olefin-silane polyisobutylene, a cross-linking agent, a catalyst, an inhibitor and a processing aid in a diluent to obtain a silicone gel membrane. By using acetylene alcohol as an inhibitor, the cross-linking speed can be accurately controlled to avoid performance degradation caused by premature cross-linking.

[0021] Preferably, the terminal alkenyl silane polyisobutylene is prepared by the following method: 2,2'-(1,4-phenyl)bis(2-chloropropane), isobutylene, a solvent, and a TiCl4 catalyst are mixed evenly, reacted, and purified to obtain a chlorine-terminated polyisobutylene prepolymer; the chlorine-terminated polyisobutylene prepolymer is dissolved, vinyl silane is added and mixed evenly, and then tri-n-butylphosphine catalyst is added and mixed evenly, reacted, and purified to obtain the terminal alkenyl silane polyisobutylene.

[0022] By adopting the above technical scheme, the silicon-containing mixture includes a specific weight percentage of olefin-based silicone rubber, vinyl silicone resin, terminal alkenyl silane polyisobutylene, a crosslinking agent, a catalyst, an inhibitor, and a processing aid. Among them, the terminal alkenyl silane polyisobutylene is prepared by mixing and reacting 2,2'-(1,4-phenyl)bis(2-chloropropane), isobutylene, a solvent, and a TiCl4 catalyst to obtain a terminal chlorine-based polyisobutylene prepolymer, which is then dissolved and added with vinyl silane and tri-n-butylphosphine catalyst for reaction and purification to obtain the terminal alkenyl silane polyisobutylene. The high-damping material containing the terminal alkenyl silane polyisobutylene structure can be better copolymerized with the olefin-based unsaturated bond to the main chain of the silicone gel film polymer, so that the high-damping structural unit is uniformly distributed and stably present in the silicone rubber pressure-sensitive adhesive with a wide operating temperature range without phase separation or stratification, thereby fully and stably exerting the high-damping function, so that the silicone gel film has a high-efficiency, stable and wide-temperature-range high-damping effect.

[0023] Preferably, the vinyl silane is one or more of (acryloxymethyl)dimethylmethoxysilane, 1,1,3,3-tetramethoxy-1,3-divinyldisiloxane, isobutylenyltrimethylsilane, and vinyltris(dimethylsiloxy)silane.

[0024] By adopting the above technical solution, terminal vinyl silane polyisobutylene prepared by a specific method is introduced into the silicone gel film, wherein the vinyl silane adopts one or more of (acrylic acid oxymethyl) dimethylmethoxysilane, 1,1,3,3-tetramethoxy-1,3-divinyldisiloxane, isobutylenyltrimethylsilane, and vinyltri(dimethylsiloxane)silane. This makes the terminal vinyl silane polyisobutylene have better compatibility with the silicone gel film, while further broadening the operating temperature range of the silicone gel film and obtaining better comprehensive performance.

[0025] Preferably, the vinyl silane is composed of 1,1,3,3-tetramethoxy-1,3-divinyldisiloxane, isobutylenyltrimethylsilane, and vinyltris(dimethylsiloxy)silane.

[0026] When vinyl silane is compounded with 1,1,3,3-tetramethoxy-1,3-divinyldisiloxane, isobutylenyltrimethylsilane, and vinyltri(dimethylsiloxane)silane, the obtained terminal vinyl silane polyisobutylene has better compatibility with silicone gel film. The prepared terminal vinyl silane-containing polyisobutylene can effectively improve the damping performance of silicone gel film and has a wide damping temperature range. For example, at 85°C, it still maintains a good damping effect, thereby improving the ambient temperature applicability of the material. At the same time, the high-damping structural units are uniformly distributed and stably present in the silicone rubber pressure-sensitive adhesive with a wide operating temperature range without phase separation or stratification, thereby improving the mechanical properties and fully and stably exerting the high damping function, and having a high-efficiency, stability and high-damping effect in a wide temperature range.

[0027] In the second aspect, a method for preparing a high-damping silicone gel film is prepared by the following method: according to the weight percentage, terminal olefin-silane polyisobutylene, olefin-based silicone rubber, vinyl silicone resin, processing aid, and inhibitor are weighed and mixed evenly, a diluent and a cross-linking agent are added, and the mixture is stirred evenly, a catalyst is added again, and the mixture is stirred evenly to obtain a silicone gel film adhesive; the silicone gel film adhesive is coated on a release film, and the film is cured to form a high-damping silicone gel film on the release film.

[0028] By adopting the above technical scheme, specific proportions of terminal olefinic silane polyisobutylene, olefinic silicone rubber, vinyl silicone resin, processing aid, inhibitor, diluent, cross-linking agent and catalyst are mixed in steps to form a glue solution and coated and cured to form a film. The high-damping material containing the terminal olefinic silane polyisobutylene structure can be copolymerized with the olefinic unsaturated bonds to the main chain of the silicone gel film polymer, so that the high-damping structural units are uniformly distributed and stably present in the silicone rubber pressure-sensitive adhesive with a wide operating temperature range without phase separation or stratification. As a result, the silicone gel film has a high-efficiency, stable and high-damping effect in a wide temperature range, and can also ensure the uniformity and stability of the material to meet the requirements of the coating process.

[0029] In summary, this application includes at least one of the following beneficial technical effects: 1. By introducing a high-damping material containing a terminal alkenyl silane polyisobutylene structure into the silicone rubber polymer molecular chain, the high-damping structural unit is evenly distributed and stably present in the silicone rubber pressure-sensitive adhesive over a wide operating temperature range, avoiding phase separation or stratification, fully and stably exerting the high-damping function, and improving the damping performance of the silicone gel film; 2. Make the silicone gel film have a wide damping temperature range, expand the damping functional area to a higher temperature, improve the ambient temperature applicability of the material, and maintain high stability and good damping performance in a wider operating temperature range. DETAILED DESCRIPTION

[0030] The present application is further described in detail below with reference to the embodiments.

[0031] Preparation Example of Terminal Alkenylsilane Polyisobutylene Preparation Example 1 A terminal alkenyl silane polyisobutylene is prepared by the following method: Under inert gas protection, 2,2'-(1,4-phenyl)bis(2-chloropropane), isobutylene, a mixed solvent of n-hexane / chloroform (volume ratio of 5:1), and a TiCl catalyst were mixed and reacted at -20°C and 2.0 MPa for 24 hours. After quenching with methanol, the mixture was purified by silica gel column chromatography to obtain a chlorine-terminated polyisobutylene prepolymer.

[0032] The volume ratio of 2,2'-(1,4-phenyl)bis(2-chloropropane), isobutylene, n-hexane / chloroform mixed solvent (volume ratio 5:1), and TiCl catalyst is 1:3:5:0.1.

[0033] The chlorine-terminated polyisobutylene prepolymer is dissolved in anhydrous toluene, vinyl silane (the weight ratio to the chlorine-terminated substance is 1.2:1) is added, and the mixture is mixed evenly. Then, tri-n-butylphosphine catalyst (the weight ratio to the chlorine-terminated substance is 0.1:1) is added, and the mixture is mixed evenly. The mixture is stirred at a temperature of 80° C. and a stirring rate of 500 r / min for 6 hours. After the reaction is completed, the mixture is cooled to room temperature, and the solvent and small molecular impurities such as unreacted vinyl silane are separated by reduced pressure distillation or solvent extraction to obtain terminal vinyl silane polyisobutylene.

[0034] The vinyl silane was (acryloxymethyl)dimethylmethoxysilane.

[0035] Preparation Example 2 The difference between Preparation Example 2 and Preparation Example 1 is that the vinylsilane is 1,1,3,3-tetramethoxy-1,3-divinyldisiloxane.

[0036] Preparation Example 3 Preparation Example 3 is different from Preparation Example 1 in that the vinyl silane is isobutylenyltrimethylsilane.

[0037] Preparation Example 4 Preparation Example 4 differs from Preparation Example 1 in that the vinyl silane is vinyl tris(dimethylsiloxy)silane.

[0038] Preparation Example 5 Preparation Example 5 is different from Preparation Example 1 in that the vinyl silane is composed of (acryloxymethyl)dimethylmethoxysilane and 1,1,3,3-tetramethoxy-1,3-divinyldisiloxane in a weight ratio of 1:2.

[0039] Preparation Example 6 Preparation Example 6 is different from Preparation Example 1 in that the vinyl silane is composed of (acryloxymethyl)dimethylmethoxysilane, isobutylenyltrimethylsilane, and vinyltri(dimethylsiloxy)silane in a weight ratio of 1:1:1.

[0040] Preparation Example 7 Preparation Example 7 is different from Preparation Example 1 in that the vinyl silane is composed of 1,1,3,3-tetramethoxy-1,3-divinyldisiloxane, isobutylenyltrimethylsilane, and vinyltris(dimethylsiloxy)silane in a weight ratio of 1:2:1.

[0041] Preparation Example 8 Preparation Example 8 is different from Preparation Example 1 in that the vinyl silane is composed of (acryloyloxymethyl)dimethylmethoxysilane, 1,1,3,3-tetramethoxy-1,3-divinyldisiloxane, isobutylenyltrimethylsilane, and vinyltri(dimethylsiloxy)silane in a weight ratio of 1:2:2:1. Example

[0042] Example 1 A high damping silicone gel film is prepared by the following method: According to the weight percentage of the silicon-containing mixture, 10% of the terminal alkenyl silane polyisobutylene obtained in Preparation Example 1, 54.5% of olefin-based silicone rubber, 30% of vinyl silicone resin (Bai Senmao brand BSM-MQ804B), and 0.5% of a processing aid were weighed and put into a planetary mixer. The mixture was dispersed at a high shear speed of 1000 r / min at 25° C. for 1 hour. Then, 0.5% of an inhibitor (acetylene alcohol), 2% of a cross-linking agent, and 150% of a diluent (xylene) were added in sequence while stirring. The mixture was further stirred. 2.5% of a catalyst (platinum catalyst PT-4000) was added again and the mixture was further stirred to obtain a silicone gel film adhesive. The silicone gel film adhesive is applied to the release film and cured to form a high damping silicone gel film on the release film.

[0043] Among them, the olefin-based silicone rubber is vinyl silicone rubber with a relative molecular mass of 150,000-500,000, preferably 150,000 in this embodiment, and a vinyl content of 0.17-0.23%; the cross-linking agent is end-side hydrogen-containing silicone oil (brand YHY model YHY-202, hydroxyl-terminated polymethylhydrogensiloxane), and the processing aid is an antistatic agent, which is composed of multi-walled carbon nanotubes (9-16nm) and single-walled carbon nanotubes (9-16nm) in a weight ratio of 1:1.

[0044] Example 2-3 The difference between Example 2-3 and Example 1 is that the amounts of raw materials used are different, as shown in Table 1; Table 1 Amount of raw materials used in Examples 1-3 (%) Examples 4-10 The difference between Example 4-10 and Example 2 is that the sources of terminal alkenyl silane polyisobutylene are different, as shown in Table 2; Table 2 Sources of terminal alkenylsilane polyisobutylenes of Examples 2 and 4-10 Example Sources of terminal olefin silane polyisobutylene Example 2 Preparation Example 1 Example 4 Preparation Example 2 Example 5 Preparation Example 3 Example 6 Preparation Example 4 Example 7 Preparation Example 5 Example 8 Preparation Example 6 Example 9 Preparation Example 7 Example 10 Preparation Example 8 Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 2 is that the terminal alkenyl silane polyisobutylene is replaced by an equal amount of olefin-based silicone rubber.

[0045] Comparative Example 2 The difference between Comparative Example 2 and Example 2 is that the terminal alkenyl silane polyisobutylene is replaced by polyisobutylene (number average molecular weight is 3000) in equal amounts.

[0046] Comparative Example 3 The difference between Comparative Example 3 and Example 2 is that the amount of terminal alkenyl silane polyisobutylene is 30%, and the amount of olefin-based silicone rubber is 53.5%.

[0047] Comparative Example 4 The difference between Comparative Example 4 and Example 2 is that the amount of terminal alkenyl silane polyisobutylene is 5%, and the amount of olefin-based silicone rubber is 78.5%.

[0048] Performance testing Detection method / test method The silicone gel films prepared in Examples 1-10 and Comparative Examples 1-3 were stacked to form a 1 mm thick film, which was subjected to rheological testing on an Anton Paar rheometer (Anton Paar rheometers (such as the MCR series) are equipped with an oscillation mode, which can study the viscoelastic behavior of silicone gel films by applying periodic stress or strain. During the test, the instrument records the storage modulus (G', characterizing the elastic response) and the loss modulus (G", characterizing the viscous dissipation), and calculates the damping loss factor tanδ = G" / G'). The test conditions are: frequency 1 Hz, normal force 0.5 N, strain 0.5%. The damping performance of the product and the change in the use temperature range are judged based on the loss factor of the product at room temperature 25°C and high temperature 85°C - the material will vibrate when subjected to external force, and the damping loss factor describes the energy loss of the rubber during the vibration process. The damping loss factor is an exponential function of the amplitude attenuation. Specifically, the larger the damping loss factor, the better the damping performance of the rubber and the greater the energy loss.

[0049] Elongation at break: Refer to GB / T 29551-2013 for testing. At 25°C, use a tensile rate of 500 mm / min to test and record the corresponding elongation at break. For example, if the elongation at break is greater than 1500%, record it as greater than 1500%. If it is less than 1500%, record the corresponding integer value. For example, if the elongation at break is in the range of 300-349%, record it as 300%, and if the elongation at break is in the range of 350-399%, record it as 400%.

[0050] The above experiment was tested 3 times and the average value was taken, as shown in Table 3. Table 3 Experimental data of Examples 1-10 and Comparative Examples 1-3 Combining Example 2 with Comparative Examples 1-3 and Table 3, it can be seen that the 25°C loss factor of Example 2 is above 1, while that of Comparative Examples 1-3 is below 1. Furthermore, as the test temperature increases, the 85°C loss factor of Example 2 is greater than that of Comparative Examples 1-3. Furthermore, as the temperature increases, the reduction in the loss factor of Example 2 is significantly less than that of Comparative Examples 1-2. Furthermore, the elongation at break of Comparative Examples 2-4 is significantly lower than that of Example 2. This demonstrates that the silicone gel film obtained by using terminal alkenylsilane polyisobutylene in combination with the raw material system and raw material dosages of this application can achieve excellent high damping performance.

[0051] Combining Example 2 and Examples 4-10 and Table 3, it can be seen that the 25°C loss factor and 85°C loss factor of Example 9 are higher than those of Example 2, Examples 4-8 and Example 10, and as the temperature increases, the decrease in its damage factor is less, indicating that the use of 1,1,3,3-tetramethoxy-1,3-divinyldisiloxane, isobutylenyltrimethylsilane, and vinyltri(dimethylsiloxane)silane in the production of terminal alkenylsilane polyisobutylene has a synergistic effect, improves the compatibility and binding stability of terminal alkenylsilane polyisobutylene in the silicone gel film raw material system, and further improves the damping performance of the silicone gel film and the damping effect at high temperature.

[0052] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A high damping silicone gel film, characterized in that: The silicon-containing mixture is diluted with a diluent, and the silicon-containing mixture is composed of the following raw materials in the following weight percentages: Vinyl silicone resin 10-30% 10-20% terminal silane polyisobutylene Crosslinking agent 0.1-2% Catalyst 1.0-2.5% Inhibitor 0.1-0.5% Processing aids 0.5-5% The balance is olefin-based silicone rubber.

2. The high damping silicone gel film according to claim 1, characterized in that: The processing aid is an antistatic agent.

3. The high damping silicone gel film according to claim 2, characterized in that: The antistatic agent is multi-walled carbon nanotubes and / or single-walled carbon nanotubes.

4. The high damping silicone gel film according to claim 1, characterized in that: The relative molecular mass of the olefin-based silicone rubber is 150,000-500,000.

5. The high damping silicone gel film according to claim 1, characterized in that: The crosslinking agent is end-side hydrogen-containing silicone oil.

6. The high damping silicone gel film according to claim 1, characterized in that: The catalyst is a platinum catalyst, and the inhibitor is acetylene alcohol.

7. The high damping silicone gel film according to claim 1, characterized in that: The terminal alkenyl silane polyisobutylene is prepared by the following method: 2,2'-(1,4-phenyl)bis(2-chloropropane), isobutylene, solvent and TiCl4 catalyst are uniformly mixed, reacted and purified to obtain a chlorine-terminated polyisobutylene prepolymer; The chlorine-terminated polyisobutylene prepolymer is dissolved, vinyl silane is added and mixed evenly, and tri-n-butylphosphine catalyst is added and mixed evenly, reacted, and purified to obtain vinyl-terminated silane polyisobutylene.

8. The high damping silicone gel film according to claim 7, characterized in that: The vinyl silane is one or more of (acrylic acid oxymethyl) dimethylmethoxy silane, 1,1,3,3-tetramethoxy-1,3-divinyldisiloxane, isobutylenyltrimethylsilane, and vinyl tris(dimethylsiloxane) silane.

9. The high damping silicone gel film according to claim 8, characterized in that: The vinyl silane consists of 1,1,3,3-tetramethoxy-1,3-divinyldisiloxane, isobutylenyltrimethylsilane and vinyltris(dimethylsiloxy)silane.

10. A method for preparing a high-damping silicone gel film according to any one of claims 1 to 9, characterized in that: Prepared by the following method: According to weight percentage, terminal olefin silane polyisobutylene, olefin-based silicone rubber, vinyl silicone resin, processing aid, and inhibitor were weighed and mixed evenly, and a diluent and a cross-linking agent were added and stirred evenly, and a catalyst was added again and continued to stir evenly to obtain a silicone gel film adhesive; The silicone gel film adhesive is applied to the release film and cured to form a high-damping silicone gel film on the release film.

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