Organic silica gel as well as preparation method and application thereof

Abstract

The invention provides an organosilicon gel and a preparation method and application thereof, the organosilicon gel is prepared from a component A and a component B. The component A comprises the following components in parts by weight: 20-90 parts of vinyl-terminated silicone oil; 0-60 parts of terminated hydrogen-containing silicone oil; 0.05 to 5 parts of cross-linked hydrogen silicone oil; 10 to 30 parts of methyl MQ silicon resin; 0.1 to 10 parts of an ultraviolet absorbent; 0.001 to 0.1 part of an inhibitor; the component B is prepared from the following component in parts by weight: 99 to 99.9 parts of vinyl-terminated silicone oil; 0.01 to 0.5 part of a catalyst; the structure of the methyl MQ silicon resin is [(CH3) 3SiO1 / 2] a [SiO2] b, and the molar ratio of a to b is (1-1.4): 1. The organic silica gel provided by the invention has good toughness, mechanical property and adhesive property, and can effectively absorb ultraviolet rays between 290-400nm.

Description

Technical Field

[0001] The invention belongs to the technical field of optical adhesives and relates to an organic silicon gel and a preparation method and application thereof. Background Art

[0002] Organic silicon gel is a soft elastomer with good viscosity. It also has the excellent high and low temperature resistance and weather resistance of silicone rubber. Since no powder is added, organic silicon gel has very good optical properties and the transmittance can reach more than 99%. In recent years, it has been used more and more in the field of full screen bonding. For example, CN111154451A uses vinyl silicone oil, vinyl silicone resin, hydrogen-containing silicone oil, hydrogen-containing silicone resin, catalyst, and inhibitor as raw materials to obtain a thermosetting liquid optical adhesive with high cohesive strength, good adhesion, and excellent adhesion to the bonding material of the display module. CN109266010A uses side hydrogen polysiloxane, vinyl polysiloxane with a specific branching structure, epoxy-modified polysiloxane with a specific structure, catalyst, and inhibitor as raw materials to obtain a kind of silicone gel with good fluidity, short-time curing at room temperature, low-temperature transparent, and a needle penetration value range of 25-105; the transmittance is greater than 95%, which is used for filling liquid crystal touch screens. CN110305486A uses vinyl silicone oil, terminal hydrogen silicone oil, hydrogen silicone oil, catalyst and inhibitor as raw materials to obtain an optical silicone gel that can be used for screen bonding.

[0003] With the development of the consumer electronics market, there are more and more outdoor screens. In order to maintain its own adhesion and flexibility, the cross-linking degree of silicone gel is relatively low, so the mechanical strength is also relatively low. The outdoor use environment is relatively complex. During use, it is affected by light, self-heating, temperature difference between day and night, etc., and silicone gel has the risk of cracking over time. Although silicone gel has the function of self-repair, it is difficult to completely restore to an uncracked state, which will have a certain impact on the light transmission and the aesthetics of the display. Although the mechanical properties can be improved by adding vinyl MQ resin and hydrogen-containing MQ resin, vinyl MQ resin and hydrogen-containing MQ resin will increase the cross-linking density and have a certain impact on toughness. If the amount added is too small, it will not have a significant effect.

[0004] The LCD (liquid crystal display) polarizer in the screen is an organic material and cannot withstand the ultraviolet rays in sunlight for a long time, which affects the service life. The wavelength of ultraviolet rays is 10nm-400nm. When the sunlight reaches the ground, most of the ultraviolet rays with a wavelength shorter than 290nm are absorbed by ozone. The ultraviolet rays in natural light are mainly in the wavelength of 290-400nm. This part of the wavelength of ultraviolet rays causes the most serious aging damage to LCD materials and affects the service life. The basic structure of the screen from top to bottom is the cover glass, optical glue and LCD polarizer. As an optical glue, silicone gel has very good transmittance to both ultraviolet light and visible light. Conventional silicone gel cannot meet the role of preventing ultraviolet light from penetrating. For screens used outdoors, how to reduce the aging damage of LCD materials caused by ultraviolet penetration has become a new demand.

[0005] Therefore, it is desirable in the art to develop an organic silicone gel having good toughness, mechanical properties, bonding properties and aging resistance. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention aims to provide an organic silicone gel and a preparation method and application thereof. The organic silicone gel provided by the present invention can be used in harsh outdoor environments, and is mainly used for full lamination of outdoor screens.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides an organic silicone gel, wherein the raw materials for preparing the organic silicone gel include component A and component B, wherein component A includes the following components in parts by weight:

[0009]

[0010]

[0011] The B component comprises the following components in parts by weight:

[0012] 99-99.9 parts of vinyl-terminated silicone oil;

[0013] Catalyst 0.01-0.5 parts;

[0014] The structure of the methyl MQ silicone resin is [(CH3)3SiO 1 / 2 ] a [SiO2] b , the molar ratio of a to b is (1-1.4):1, for example 1:1, 1.1:1, 1.2:1, 1.3:1, 1.4:1, etc.

[0015] The present invention introduces methyl MQ silicone resin into the silicone gel system, which can be well compatible with the system and does not affect the light transmittance. At the same time, the methyl MQ silicone resin can be attached to the molecular chain of siloxane, play a good reinforcing role, and improve the mechanical properties of the silicone gel; the methyl MQ resin will have a small amount of residual silanol in the process of synthesis, and the silanol can enhance the force between the silicone gel and the interface, thereby improving the adhesion and surface viscosity of the silicone gel. After the surface viscosity is improved, it is beneficial to the dry bonding process (the dry bonding process is a process of bonding the cover glass after the silicone gel is solidified on the LCD). The present invention also adds a specific ultraviolet absorber to the silicone gel, which can absorb ultraviolet rays between 290 and 400 nm, prevent ultraviolet rays from penetrating the silicone gel, protect the LCD material in the screen, and extend the service life of the screen. In addition, the ultraviolet absorber itself is light yellow, which has a certain influence on the yellowing of the silicone gel, and the yellowing can be suppressed by adding the methyl MQ silicone resin.

[0016] In the present invention, the amount of the vinyl-terminated silicone oil in component A can be 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, 32 parts, 34 parts, 35 parts, 38 parts, 40 parts, 42 parts, 44 parts, 46 parts, 48 ​​parts, 50 parts, 52 parts, 54 parts, 56 parts, 58 parts, 60 parts, 62 parts, 64 parts, 66 parts, 68 parts, 70 parts, 72 parts, 74 parts, 76 parts, 78 parts, 80 parts, 82 parts, 84 parts, 86 parts, 88 parts, 90 parts, etc., by weight.

[0017] In the present invention, the amount of the end-hydrogen silicone oil in component A can be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, etc., by weight.

[0018] In the present invention, the amount of the cross-linked hydrogen silicone oil in component A can be 0.05 parts, 0.06 parts, 0.08 parts, 0.1 parts, 0.3 parts, 0.5 parts, 0.8 parts, 1 parts, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, etc., calculated by weight.

[0019] In the present invention, the amount of methyl MQ silicone resin in component A can be 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, etc., based on parts by weight.

[0020] In the present invention, the amount of the ultraviolet absorber in component A can be 0.1, 0.3, 0.5, 0.8, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, etc. parts by weight.

[0021] In the present invention, the amount of the inhibitor in component A can be 0.001 part, 0.003 part, 0.005 part, 0.008 part, 0.01 part, 0.03 part, 0.05 part, 0.08 part, 0.1 part, etc., based on parts by weight.

[0022] In the present invention, the amount of the component B, based on parts by weight, of the vinyl-terminated silicone oil can be 99 parts, 99.1 parts, 99.2 parts, 99.3 parts, 99.4 parts, 99.5 parts, 99.6 parts, 99.7 parts, 99.8 parts, 99.9 parts, etc.

[0023] In the present invention, the amount of the catalyst in component B can be 0.01 part, 0.03 part, 0.05 part, 0.08 part, 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, etc., based on parts by weight.

[0024] Preferably, based on the total weight of component A and component B as 100%, the amount of the methyl MQ silicone resin is 5%-15%, for example, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, etc.

[0025] Preferably, the vinyl-terminated silicone oil in component A and component B is a polydimethylsiloxane containing vinyl groups at both ends, and the viscosity is independently 10-800000 mPa·s, for example, 10 mPa·s, 50 mPa·s, 100 mPa·s, 500 mPa·s, 1000 mPa·s, 5000 mPa·s, 10000 mPa·s, 50000 mPa·s, 100000 mPa·s, 300000 mPa·s, 500000 mPa·s, 800000 mPa·s, etc.; when used, one type can be used alone or vinyl-terminated silicone oils of different viscosities can be mixed and used.

[0026] Preferably, the vinyl content in the vinyl-terminated silicone oil in component A and component B is each independently 0.02-3mmol / g, for example, 0.02mmol / g, 0.03mmol / g, 0.05mmol / g, 0.08mmol / g, 0.1mmol / g, 0.3mmol / g, 0.5mmol / g, 0.8mmol / g, 1mmol / g, 1.5mmol / g, 2mmol / g, 2.5mmol / g, 3mmol / g, etc.

[0027] Preferably, the end-hydrogenated silicone oil is a polydimethylsiloxane having a silicon hydrogen group at each end and having a viscosity of 1-1000mPa·s, for example, 1mPa·s, 3mPa·s, 5mPa·s, 8mPa·s, 10mPa·s, 30mPa·s, 50mPa·s, 80mPa·s, 100mPa·s, 300mPa·s, 500mPa·s, 800mPa·s, 1000mPa·s, etc.

[0028] Preferably, the content of silicon hydrogen groups in the terminal hydrogen-containing silicone oil is 0.01-2mmol / g, for example, 0.01mmol / g, 0.03mmol / g, 0.05mmol / g, 0.08mmol / g, 0.1mmol / g, 0.3mmol / g, 0.5mmol / g, 0.8mmol / g, 1mmol / g, 1.2mmol / g, 1.4mmol / g, 1.6mmol / g, 1.8mmol / g, 2mmol / g and the like.

[0029] Preferably, the molar ratio of the silyl group in the terminal hydrogen-containing silicone oil to the vinyl group in the entire preparation raw material system is (0-0.9):1, for example 0:1, 0.1:1, 0.2:1, 0.3:1, 0.4:1, 0.5:1, 0.6:1, 0.7:1, 0.8:1, 0.9:1, etc.

[0030] Preferably, each molecular chain of the cross-linked hydrogen silicone oil contains at least three silicon hydrogen groups, and the silicon hydrogen groups are at both ends and the side chains or all at the side chains.

[0031] Preferably, the viscosity of the cross-linked hydrogen silicone oil is 1-500mPa·s, for example, 1mPa·s, 3mPa·s, 5mPa·s, 8mPa·s, 10mPa·s, 30mPa·s, 50mPa·s, 80mPa·s, 100mPa·s, 150mPa·s, 200mPa·s, 250mPa·s, 300mPa·s, 350mPa·s, 400mPa·s, 450mPa·s, 500mPa·s, etc.

[0032] Preferably, the content of silicon hydrogen groups in the cross-linked hydrogen silicone oil is 0.9-16 mmol / g, for example, 0.9 mmol / g, 1 mmol / g, 3 mmol / g, 5 mmol / g, 8 mmol / g, 10 mmol / g, 12 mmol / g, 14 mmol / g, 16 mmol / g, etc.

[0033] Preferably, the molar ratio of the silicon hydrogen group in the cross-linked hydrogen silicone oil to the vinyl group in the entire preparation raw material system is (0.05-0.8):1, for example, 0.05:1, 0.08:1, 0.1:1, 0.2:1, 0.3:1, 0.4:1, 0.5:1, 0.6:1, 0.7:1, 0.8:1, etc.

[0034] Preferably, the molar ratio of the sum of the silicon-hydrogen groups in the terminal hydrogen silicone oil and the cross-linked hydrogen silicone oil to the vinyl groups in the entire preparation raw material system is less than 1:1.

[0035] Preferably, the ultraviolet absorber includes 3-(2H-benzotriazole)-5-(1,1-di-methylethyl)-4-hydroxy-phenylpropionic acid octyl ester, the trade name is UV384-2, and the structure is as follows:

[0036]

[0037] Preferably, the inhibitor includes any one of 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane, 1,1,3,3-tetramethyl-1,3-divinylsiloxane, 3-methyl-1-butyn-3-ol, 1-ethynylcyclohexanol, 3-phenyl-1-butyn-3-ol, 3-propyl-1-butyn-3-ol, and 3-octyl-1-butyn-3-ol, or a combination of at least two thereof.

[0038] Preferably, the catalyst comprises a platinum catalyst.

[0039] Preferably, the platinum catalyst is an organic platinum complex, selected from any one or a combination of at least two of an alcohol solution of chloroplatinic acid, a platinum catalyst coordinated by tetrahydrofuran, or a platinum catalyst coordinated by divinyltetramethylsiloxane.

[0040] Preferably, the weight ratio of component A to component B is (0.8-1.2):1, for example, 0.8:1, 0.9:1, 1:1, 1.1:1, 1.2:1, etc.

[0041] In a second aspect, the present invention provides a method for preparing the organic silicone gel as described in the first aspect, the preparation method comprising the following steps:

[0042] (1) mixing a formulated amount of vinyl-terminated silicone oil and methyl MQ silicone resin, heating and stirring until the methyl MQ silicone resin and the vinyl-terminated silicone oil are completely dissolved, then cooling, adding optional hydrogen-terminated silicone oil, cross-linked hydrogen silicone oil, inhibitor, and ultraviolet absorber, and mixing again to obtain component A;

[0043] (2) mixing a formulated amount of vinyl-terminated silicone oil and a catalyst to obtain component B;

[0044] (3) Component A and component B are mixed to obtain the organic silicone gel.

[0045] Preferably, the mixing in step (1) is carried out in a planetary machine.

[0046] Preferably, the heating in step (1) is heating to 80-100°C, such as 80°C, 85°C, 90°C, 95°C, 100°C, etc.

[0047] Preferably, the cooling in step (1) is to room temperature.

[0048] Preferably, the mixing in step (2) is carried out in a planetary machine.

[0049] In a third aspect, the present invention provides a use of the silicone gel as described in the first aspect in screen bonding.

[0050] Preferably, the screen comprises a screen for outdoor use.

[0051] Compared with the prior art, the present invention has at least the following beneficial effects:

[0052] (1) The present invention can significantly improve the mechanical properties and bonding properties of silicone gel by adding a specific amount of methyl MQ silicone resin to the silicone gel system, especially improve the surface bonding properties of silicone gel, which is more conducive to the dry bonding process and ensures the reliability of bonding;

[0053] (2) The present invention adds a specific UV absorber to the silicone gel system, which can effectively absorb ultraviolet rays between 290 and 400 nm and prevent ultraviolet rays from penetrating while ensuring the transmission of visible light. Under the premise of ensuring normal use functions, the LCD material in the screen is protected from damage by ultraviolet rays, effectively increasing the life of the screen used under outdoor conditions. DETAILED DESCRIPTION

[0054] The technical solution of the present invention is further described below by specific implementation methods. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0055] Example 1

[0056] In this embodiment, a silicone gel is provided. The raw materials for preparing the silicone gel include component A and component B. The specific raw material composition and dosage are as follows:

[0057]

[0058] The preparation method comprises the following steps:

[0059] (1) Add the formulated amount of vinyl-terminated silicone oil and methyl MQ silicone resin into a planetary machine device for mixing, heat to 90° C., stir while heating until the methyl MQ silicone resin and the vinyl-terminated silicone oil are completely dissolved, then cool to room temperature, add the remaining components in the raw materials for preparing component A, mix evenly, and obtain component A;

[0060] (2) adding the formulated amount of vinyl-terminated silicone oil and catalyst into a planetary machine and mixing them evenly to obtain component B;

[0061] (3) Component A and component B are mixed in a weight ratio of 1:1 to obtain the organic silicone gel.

[0062] Example 2

[0063] In this embodiment, a silicone gel is provided. The raw materials for preparing the silicone gel include component A and component B. The specific raw material composition and dosage are as follows:

[0064]

[0065] The preparation method is the same as Example 1.

[0066] Example 3

[0067] In this embodiment, a silicone gel is provided. The raw materials for preparing the silicone gel include component A and component B. The specific raw material composition and dosage are as follows:

[0068]

[0069]

[0070] The preparation method is the same as Example 1.

[0071] Example 4

[0072] In this embodiment, a silicone gel is provided. The raw materials for preparing the silicone gel include component A and component B. The specific raw material composition and dosage are as follows:

[0073]

[0074] The preparation method is the same as Example 1.

[0075] Example 5

[0076] In this embodiment, a silicone gel is provided. The raw materials for preparing the silicone gel include component A and component B. The specific raw material composition and dosage are as follows:

[0077]

[0078]

[0079] Example 6

[0080] In this embodiment, a silicone gel is provided. The raw materials for preparing the silicone gel include component A and component B. The specific raw material composition and dosage are as follows:

[0081]

[0082] Comparative Example 1

[0083] Compared with Example 2, this comparative example does not add ultraviolet absorber, and the specific raw material composition and dosage are as follows:

[0084]

[0085]

[0086] The preparation method is the same as Example 1.

[0087] Comparative Example 2

[0088] Compared with Example 2, this comparative example does not add methyl MQ silicone resin, and the specific raw material composition and dosage are as follows:

[0089]

[0090] The preparation method is the same as that of Example 1.

[0091] Comparative Example 3

[0092] Compared with Example 2, this comparative example does not add methyl MQ silicone resin and ultraviolet absorber, and the specific raw material composition and dosage are as follows:

[0093]

[0094]

[0095] The preparation method is the same as that of Example 1.

[0096] Comparative Example 4

[0097] Compared with Example 3, this comparative example does not add methyl MQ silicone resin and ultraviolet absorber, and adjusts the cone penetration to about 50. The specific raw material composition and dosage are as follows:

[0098]

[0099] The preparation method is the same as Example 1.

[0100] Comparative Example 5

[0101] The difference between this comparative example and Example 2 is that, in the methyl MQ silicone resin, a / b=0.9.

[0102]

[0103]

[0104] The performance of the silicone gel provided in the examples and comparative examples was tested in the following manner:

[0105] (1) Viscosity: Tested in accordance with GB / T 2794 “Determination of viscosity of adhesives”;

[0106] (2) Cone penetration: Tested in accordance with GB / T 269 “Cone penetration test of lubricating greases and petroleum greases”;

[0107] (3) Adhesive strength: The test was conducted in accordance with the method for the determination of tensile shear strength of adhesives (rigid material to rigid material) in GB / T 7124. When preparing the sample, the silicone gel was first cured at one end of one of the glass pieces, and then overlapped with another glass piece and fixed with tape. After 24 hours, the fixing tape was removed and the test was conducted. The tensile rate was 100 mm / min.

[0108] (4) Mechanical properties: Tested in accordance with GB / T 528 “Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber”;

[0109] (5) Light transmittance: tested by UV-VIS spectrophotometer, the thickness of the adhesive layer is 1 mm;

[0110] (6) The degree of yellowing is expressed as b * The value is expressed as follows: according to ISO 11664-4 Colorimetry-Part 4: CIE 1976 L*a*b*colour space test, 0.7mm optical glass + 0.2mm glue layer + 0.7mm glass are baked at 120℃ for 30min and tested after cooling.

[0111] The performance test results are shown in Table 1 and Table 2.

[0112] Table 1

[0113]

[0114]

[0115] Table 2

[0116]

[0117] It can be seen from Table 1 that the organic silicone gels provided in the embodiments of the present invention have relatively high tensile strength (0.36-0.53 MPa), adhesive strength (0.13-0.18 MPa), and good yellowing resistance (b * Value: 0.11-0.19), and under the condition of ensuring the transmission of visible light, it can effectively absorb ultraviolet rays between 290-400nm and prevent ultraviolet rays from transmitting. When it is used for the bonding of outdoor screens, it can delay the service life of the screen.

[0118] Compared with Example 2, the silicone gel provided in Comparative Example 1 cannot effectively absorb ultraviolet rays between 290-400nm; the tensile strength and bonding strength of the silicone gel provided in Comparative Example 2 are significantly deteriorated, and the yellowing resistance is also significantly deteriorated; the tensile strength and bonding strength of the silicone gel provided in Comparative Example 3 are significantly deteriorated, and it cannot effectively absorb ultraviolet rays between 290-400nm; the ratio of M unit to Q unit of the methyl MQ silicone resin of the silicone gel provided in Comparative Example 5 is 0.9, which has a certain effect on the transmittance in the visible light region.

[0119] Compared with Example 3, the tensile strength and bonding strength of the silicone gel provided in Comparative Example 4 are significantly deteriorated.

[0120] The applicant declares that the present invention uses the above-mentioned embodiments to illustrate the silicone gel and its preparation method and application, but the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. An organosilicon gel, characterized in that: The raw materials for preparing the organic silicone gel include component A and component B. Component A includes the following components in parts by weight: The B component comprises the following components in parts by weight: 99-99.9 parts of vinyl-terminated silicone oil; Catalyst 0.01-0.5 parts; The structure of the methyl MQ silicone resin is [(CH3)3SiO 1 / 2 ] a [SiO2] b , the molar ratio of a to b is (1-1.4):

1.

2. The organic silicone gel according to claim 1, characterized in that: Based on the total weight of component A and component B being 100%, the amount of the methyl MQ silicone resin is 5%-15%; Preferably, the vinyl-terminated silicone oil in the A component and the B component is a polydimethylsiloxane containing vinyl groups at both ends, and the viscosity is independently 10-800000 mPa·s; Preferably, the vinyl content of the vinyl-terminated silicone oil in the A component and the B component is independently 0.02-3 mmol / g.

3. The organic silicone gel according to claim 1 or 2, characterized in that: The terminal hydrogen-containing silicone oil is a polydimethylsiloxane having a silicon hydrogen group at each end and a viscosity of 1-1000 mPa·s; Preferably, the content of silicon hydrogen groups in the hydrogen-terminated silicone oil is 0.01-2 mmol / g; Preferably, the molar ratio of the silicon hydrogen groups in the terminal hydrogen-containing silicone oil to the vinyl groups in the entire preparation raw material system is (0-0.9):

1.

4. The organic silicone gel according to any one of claims 1 to 3, characterized in that: Each molecular chain of the cross-linked hydrogen silicone oil contains at least three silicon hydrogen groups, and the silicon hydrogen groups are at both ends and the side chains or all on the side chains; Preferably, the viscosity of the cross-linked hydrogen silicone oil is 1-500 mPa·s; Preferably, the content of silicon hydrogen groups in the cross-linked hydrogen silicone oil is 0.9-16 mmol / g; Preferably, the molar ratio of the silicon hydrogen group in the cross-linked hydrogen silicone oil to the vinyl group in the entire preparation raw material system is (0.05-0.8):1; Preferably, the molar ratio of the sum of the silicon-hydrogen groups in the terminal hydrogen silicone oil and the cross-linked hydrogen silicone oil to the vinyl groups in the entire preparation raw material system is less than 1:

1.

5. The organic silicone gel according to any one of claims 1 to 4, characterized in that: The ultraviolet absorber includes 3-(2H-benzotriazole)-5-(1,1-di-methylethyl)-4-hydroxy-phenylpropionic acid octyl ester; Preferably, the inhibitor includes any one of 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane, 1,1,3,3-tetramethyl-1,3-divinylsiloxane, 3-methyl-1-butyn-3-ol, 1-ethynylcyclohexanol, 3-phenyl-1-butyn-3-ol, 3-propyl-1-butyn-3-ol, and 3-octyl-1-butyn-3-ol, or a combination of at least two thereof.

6. The organic silicone gel according to any one of claims 1 to 5, characterized in that: The catalyst comprises a platinum catalyst; Preferably, the platinum catalyst is an organic platinum complex, selected from any one or a combination of at least two of an alcohol solution of chloroplatinic acid, a platinum catalyst coordinated by tetrahydrofuran, or a platinum catalyst coordinated by divinyltetramethylsiloxane.

7. The organic silicone gel according to any one of claims 1 to 6, characterized in that: The weight ratio of component A to component B is (0.8-1.2):

1.

8. A method for preparing an organosilicon gel as claimed in any one of claims 1 to 7, characterized in that: The preparation method comprises the following steps: (1) mixing a formulated amount of vinyl-terminated silicone oil and methyl MQ silicone resin, heating, then cooling, adding optional hydrogen-terminated silicone oil, cross-linked hydrogen silicone oil, inhibitor, and ultraviolet absorber, and mixing again to obtain component A; (2) mixing a formulated amount of vinyl-terminated silicone oil and a catalyst to obtain component B; (3) Component A and component B are mixed to obtain the organic silicone gel.

9. The preparation method according to claim 8, characterized in that: The mixing in step (1) is carried out in a planetary machine; Preferably, the heating in step (1) is heating to 80-100° C. Preferably, the cooling in step (1) is to room temperature; Preferably, the mixing in step (2) is carried out in a planetary machine.

10. Use of the organic silicone gel according to any one of claims 1 to 7 in screen lamination.

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