Organosilicone elastomer and preparation method thereof

Abstract

The invention mainly relates to the field of organosilicone chemistry, the field of daily chemicals and the field of high polymer materials, in particular to an organosilicone elastomer and a preparation method thereof. Comprising the following components: a side chain, divinyl terminated polysiloxane, hyaluronic acid modified single-ended vinyl polysiloxane, phenyl modified vinyl polysiloxane, a carrier fluid and a catalyst for hydrosilylation, a phenyl chain segment is introduced on the basis of a conventional elastomer net structure, so that the compatibility with various personal care components and active components is improved. In addition, hyaluronic acid, which is an excellent natural moisturizing factor, is introduced to improve the moisturizing performance of the organic silicon elastomer, so that the aim of moisturizing the skin is fulfilled. Meanwhile, the preparation method is simple, and mass production is easy to realize.

Description

Technical Field

[0001] This technical solution mainly involves the "organic silicon chemistry field", "daily chemical field" and "polymer material field", and specifically involves an organic silicon elastomer and a preparation method. Background Art

[0002] Silicone is an important chemical raw material, widely used in various industries, such as electronics, automobiles, construction, and medical treatment. Silicone elastomer is an excellent cosmetic ingredient for skin feel and viscosity adjustment, with a unique silky and powdery feel, so it is favored by a number of formulators and applied to a wide range of personal care products. However, in actual use, silicone elastomers have poor compatibility with skin sebum and lack moisturizing effects. The skin is easily rubbed into mud and feels tight. One of the reasons is that silicone elastomers have limited compatibility with various personal care ingredients, active ingredients, and health care active ingredients. Therefore, how to improve existing silicone elastomers and improve their compatibility with formulation components and moisturizing effect on the skin has become one of the directions for silicone elastomer modification.

[0003] The invention provides an organic silicon elastomer and a preparation method thereof. Summary of the invention

[0004] The purpose of the present invention is to provide a silicone elastomer and a preparation method thereof in view of the deficiencies of the prior art.

[0005] In order to solve the above technical problems, the following technical solutions are adopted:

[0006] An organic silicon elastomer comprises a side chain, a divinyl-terminated polysiloxane, a hyaluronic acid-modified single-terminated vinyl polysiloxane, a phenyl-modified vinyl polysiloxane, a carrier fluid and a catalyst for hydrosilylation;

[0007] The polysiloxane has at least two SiH groups in the side chain;

[0008] The components are in parts by weight as follows: 50-100 parts by weight of side chains, 5-30 parts by weight of hyaluronic acid-modified single-end vinyl polysiloxane, 5-30 parts by weight of phenyl-modified vinyl polysiloxane, 50-500 parts by weight of divinyl-terminated polysiloxane, 1000-5000 parts by weight of carrier fluid, and 1-10 ppm of platinum catalyst.

[0009] A further improvement based on the technical solution is that the amount ratio of the D segment to the D' segment in the polysiloxane having at least two SiH groups in the side chain is 2-20, the weight percentage of H in the SiH group in the molecule is 0.05%-0.5%, and the molecular weight of the molecule is 1000-20000.

[0010] A further improvement based on the technical solution is that the vinyl content of the divinyl-terminated polysiloxane is 0.15%-5%, the degree of polymerization is 10-500, and the molecular weight is 1000-20000.

[0011] A further improvement based on the technical solution is that the hyaluronic acid used in the hyaluronic acid-modified single-end vinyl polysiloxane is unmodified low-molecular-weight hyaluronic acid, which reacts with dimethylvinylethoxysilane under the action of an organic titanium catalyst to obtain the hyaluronic acid-modified single-end vinyl polysiloxane.

[0012] A further improvement based on the technical solution is that the vinyl content of the phenyl-modified vinyl polysiloxane is 0.1%-0.6%, the phenyl content is 25-50%, and the polymerization degree is 150-300.

[0013] A further improvement based on the technical solution is that the carrier fluid is selected from decamethylcyclopentasiloxane, polydimethylsiloxane or isomeric alkanes.

[0014] A further improvement based on the technical solution is that the catalyst used for the hydrosilylation is a platinum metal catalyst, the platinum metal catalyst is a chloroplatinic acid platinum catalyst or a Karstedt platinum catalyst, and the concentration of the platinum metal catalyst is 1-10 ppm.

[0015] The present invention proposes another technical solution: a method for preparing an organosilicon elastomer, characterized by comprising the following steps:

[0016] S1. Place polysiloxane with at least two SiH groups, hyaluronic acid-modified vinyl silicone oil, phenyl-modified vinyl silicone oil, part of the carrier fluid and the platinum catalyst in a clean stirring kettle, introduce nitrogen throughout the process, the stirring speed is 10-80rpm / min, the reaction temperature is 50-120℃, and the reaction time is 0.5-1.5h.

[0017] S2. After the reaction step S1 is completed, the double-terminal vinyl silicone oil and the remaining carrier fluid are added to the stirring tank and the reaction is continued at a constant temperature for 2-5 hours.

[0018] S3. After the gel is obtained by reaction, the temperature is cooled to 25-35°C and stirring is continued for 0.5-1h to obtain the silicone elastomer.

[0019] The above technical solution has the following beneficial effects:

[0020] The present invention selects raw materials of specific types and proportions, including hydrogen silicone oil, hyaluronic acid modified vinyl silicone oil, phenyl modified silicone oil, double-terminal vinyl silicone oil and decamethylcyclopentasiloxane, and an appropriate amount of platinum catalyst. The proportion and type of these raw materials have an important influence on the performance of the final product. The present invention adopts special reaction conditions and steps, including being carried out under nitrogen protection, firstly isothermally reacting at a speed of 30rpm / min and a temperature of 80°C for 45min, then adding other raw materials, then increasing the speed to 50rpm / min, and continuing to isothermally react at 80°C for 2.5h. The design of such reaction conditions and steps can effectively reduce energy consumption, shorten reaction time, and improve production efficiency. After the reaction is completed, the temperature of the stirring kettle is reduced to 35°C, and stirring is continued for 30min to obtain an organosilicon elastomer gel. This treatment method can further improve the performance of the product, such as improving its mechanical strength and aging resistance. During the entire reaction process, the reaction conditions are strictly controlled to avoid using too much organic solvent to reduce the harm to the environment and human health. At the same time, this method can also reduce production costs and improve the market competitiveness of products.

[0021] The specific beneficial effects are as follows:

[0022] 1. Energy saving and high efficiency: The preparation method of the present invention can complete the reaction at a relatively low temperature (80°C) and in a relatively short time (about 3 hours), which greatly reduces energy consumption and improves production efficiency.

[0023] 2. Excellent performance: The organic silicone elastomer gel of the present invention has excellent heat resistance, weather resistance, electrical insulation, biocompatibility and other properties, which are superior to existing organic silicone elastomers.

[0024] 3. Safety and environmental protection: The preparation method of the present invention is carried out under nitrogen protection, avoiding the use of a large amount of organic solvents, reducing the risk of flammability and explosion, and is more friendly to the environment and human health.

[0025] 4. Flexible formula: The preparation method of the present invention can adjust the reaction rate and the molecular structure of the product by changing the proportion and type of raw materials, as well as the type and amount of catalyst, so as to obtain silicone elastomers with different properties.

[0026] 5. Low cost: The preparation method of the present invention is simple, does not require special equipment, and uses cheap raw materials, which is conducive to reducing production costs. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following examples further describe the present invention in detail. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0028] An organic silicon elastomer comprises the following components: a side chain, a divinyl-terminated polysiloxane, a hyaluronic acid-modified single-terminated vinyl polysiloxane, a phenyl-modified vinyl polysiloxane, a carrier fluid, and a catalyst for hydrosilylation;

[0029] The polysiloxane has at least two SiH groups in the side chain;

[0030] The components are in parts by weight as follows: 50-100 parts by weight of side chains, 5-30 parts by weight of hyaluronic acid-modified single-end vinyl polysiloxane, 5-30 parts by weight of phenyl-modified vinyl polysiloxane, 50-500 parts by weight of divinyl-terminated polysiloxane, 1000-5000 parts by weight of carrier fluid, and 1-10 ppm of platinum catalyst.

[0031] This embodiment provides a silicone elastomer, which introduces phenyl segments on the basis of a conventional elastomer network structure, thereby increasing its compatibility with various personal care ingredients and active ingredients. In addition, the moisturizing properties of the silicone elastomer are increased by introducing hyaluronic acid, an excellent natural moisturizing factor, thereby achieving the purpose of making the skin more moisturized. At the same time, the preparation method is simple and easy to achieve mass production.

[0032] As a further illustration of this embodiment, the ratio of the amount of D segments to D' segments in the polysiloxane having at least two SiH groups in the side chain is 2-20, the weight percentage of H in the SiH group in the molecule is 0.05%-0.5%, and the molecular weight of the molecule is 1000-20000.

[0033] As a further illustration of this embodiment, the vinyl content of the divinyl-terminated polysiloxane is 0.15%-5%, the degree of polymerization is 10-500, and the molecular weight is 1000-20000.

[0034] As a further illustration of this embodiment, the hyaluronic acid used in the hyaluronic acid-modified single-end vinyl polysiloxane is unmodified low molecular weight hyaluronic acid, which reacts with dimethylvinylethoxysilane under the action of an organic titanium catalyst to obtain the hyaluronic acid-modified single-end vinyl polysiloxane.

[0035] As a further illustration of this embodiment, the phenyl-modified vinyl polysiloxane has a vinyl content of 0.1%-0.6%, a phenyl content of 25-50%, and a polymerization degree of 150-300.

[0036] As a further illustration of this embodiment, the carrier fluid is selected from decamethylcyclopentasiloxane, polydimethylsiloxane or isomeric alkanes.

[0037] As a further illustration of this embodiment, the catalyst used in the hydrosilylation is a platinum metal catalyst, the platinum metal catalyst is a chloroplatinic acid platinum catalyst or a Karstedt platinum catalyst, and the concentration of the platinum metal catalyst is 1-10 ppm.

[0038] The embodiment of the present invention proposes another technical solution: a method for preparing an organosilicon elastomer, characterized by comprising the following steps:

[0039] S1. Place polysiloxane with at least two SiH groups, hyaluronic acid-modified vinyl silicone oil, phenyl-modified vinyl silicone oil, part of the carrier fluid and the platinum catalyst in a clean stirring kettle, introduce nitrogen throughout the process, the stirring speed is 10-80rpm / min, the reaction temperature is 50-120℃, and the reaction time is 0.5-1.5h.

[0040] S2. After the reaction step S1 is completed, the double-terminal vinyl silicone oil and the remaining carrier fluid are added to the stirring tank and the reaction is continued at a constant temperature for 2-5 hours.

[0041] S3. After the gel is obtained by reaction, the temperature is cooled to 25-35°C and stirring is continued for 0.5-1h to obtain the silicone elastomer.

[0042] In this embodiment, part of hyaluronic acid and phenyl segments are branched on the basis of the original basic silicone elastomer formed by cross-linking hydrogen silicone oil and vinyl silicone oil, so that it has better compatibility and moisturizing effect, thereby improving the problems of dry and tight skin after use and poor compatibility with other cosmetic ingredients, and broadening the application scope of silicone elastomer in cosmetic formulas.

[0043] The preparation method of the present invention can be carried out at a relatively low temperature and pressure, which greatly reduces energy consumption and production costs. Secondly, the preparation method of the present invention greatly shortens the reaction time and improves production efficiency. Thirdly, the silicone elastomer prepared by the preparation method of the present invention has excellent mechanical strength and aging resistance, and can be widely used in the fields of medical devices, sealing materials, coating materials, etc. Finally, the preparation method of the present invention is also improved in terms of environmental protection and safety, reducing the use of organic solvents and reducing harm to the environment and human health. Therefore, the present invention has broad market demand and good application prospects.

[0044] The following is further described by means of specific embodiments:

[0045] Example 1

[0046] Weigh 70 parts by mass of hydrogenated silicone oil, 10 parts by mass of hyaluronic acid-modified vinyl silicone oil, 10 parts by mass of phenyl-modified silicone oil, 1000 parts by mass of decamethylcyclopentasiloxane and 3 ppm of platinum catalyst in a stirring kettle, and react at 30 rpm / min and 80°C for 45 minutes. After the reaction, add 250 parts by mass of double-terminal vinyl silicone oil and 800 parts by mass of decamethylcyclopentasiloxane, increase the speed to 50 rpm / min, and continue to react at 80°C for 2.5 hours. After the reaction is completed, reduce the temperature of the stirring kettle to 35°C, continue stirring for 30 minutes, and obtain a silicone elastomer gel. The entire reaction is carried out under nitrogen protection.

[0047] Example 2

[0048] Weigh 70 parts by mass of hydrogenated silicone oil, 5 parts by mass of hyaluronic acid-modified vinyl silicone oil, 10 parts by mass of phenyl-modified silicone oil, 1000 parts by mass of decamethylcyclopentasiloxane and 3 ppm of platinum catalyst in a stirring kettle, and react at 30 rpm / min and 80°C for 45 minutes. After the reaction, add 250 parts by mass of double-terminal vinyl silicone oil and 800 parts by mass of decamethylcyclopentasiloxane, increase the speed to 50 rpm / min, and continue to react at 80°C for 2.5 hours. After the reaction is completed, reduce the temperature of the stirring kettle to 35°C, continue stirring for 30 minutes, and obtain a silicone elastomer gel. The entire reaction is carried out under nitrogen protection.

[0049] Example 3

[0050] Weigh 70 parts by mass of hydrogenated silicone oil, 10 parts by mass of hyaluronic acid-modified vinyl silicone oil, 5 parts by mass of phenyl-modified silicone oil, 1000 parts by mass of decamethylcyclopentasiloxane and 3 ppm of platinum catalyst in a stirring kettle, and react at 30 rpm / min and 80°C for 45 minutes. After the reaction, add 250 parts by mass of double-terminal vinyl silicone oil and 800 parts by mass of decamethylcyclopentasiloxane, increase the speed to 50 rpm / min, and continue to react at 80°C for 2.5 hours. After the reaction is completed, reduce the temperature of the stirring kettle to 35°C, continue stirring for 30 minutes, and obtain a silicone elastomer gel. The entire reaction is carried out under nitrogen protection.

[0051] Example 4

[0052] Weigh 70 parts by mass of hydrogenated silicone oil, 15 parts by mass of hyaluronic acid-modified vinyl silicone oil, 10 parts by mass of phenyl-modified silicone oil, 1000 parts by mass of decamethylcyclopentasiloxane and 3 ppm of platinum catalyst in a stirring kettle, and react at 30 rpm / min and 80°C for 45 minutes. After the reaction, add 250 parts by mass of double-terminal vinyl silicone oil and 800 parts by mass of decamethylcyclopentasiloxane, increase the speed to 50 rpm / min, and continue to react at 80°C for 2.5 hours. After the reaction is completed, reduce the temperature of the stirring kettle to 35°C, continue stirring for 30 minutes, and obtain a silicone elastomer gel. The entire reaction is carried out under nitrogen protection.

[0053] Example 5

[0054] Weigh 70 parts by mass of hydrogenated silicone oil, 10 parts by mass of hyaluronic acid-modified vinyl silicone oil, 15 parts by mass of phenyl-modified silicone oil, 1000 parts by mass of decamethylcyclopentasiloxane and 3 ppm of platinum catalyst in a stirring kettle, and react at 30 rpm / min and 80°C for 45 minutes. After the reaction, add 250 parts by mass of double-terminal vinyl silicone oil and 800 parts by mass of decamethylcyclopentasiloxane, increase the speed to 50 rpm / min, and continue to react at 80°C for 2.5 hours. After the reaction is completed, reduce the temperature of the stirring kettle to 35°C, continue stirring for 30 minutes, and obtain a silicone elastomer gel. The entire reaction is carried out under nitrogen protection.

[0055] Example 6

[0056] Weigh 70 parts by mass of hydrogenated silicone oil, 15 parts by mass of hyaluronic acid-modified vinyl silicone oil, 15 parts by mass of phenyl-modified silicone oil, 1000 parts by mass of decamethylcyclopentasiloxane and 3 ppm of platinum catalyst in a stirring kettle, and react at 30 rpm / min and 80°C for 45 minutes. After the reaction, add 250 parts by mass of double-terminal vinyl silicone oil and 800 parts by mass of decamethylcyclopentasiloxane, increase the speed to 50 rpm / min, and continue to react at 80°C for 2.5 hours. After the reaction is completed, reduce the temperature of the stirring kettle to 35°C, continue stirring for 30 minutes, and obtain a silicone elastomer gel. The entire reaction is carried out under nitrogen protection.

[0057] Example 7

[0058] Weigh 70 parts by mass of hydrogenated silicone oil, 10 parts by mass of hyaluronic acid-modified vinyl silicone oil, 10 parts by mass of phenyl-modified silicone oil, 1000 parts by mass of decamethylcyclopentasiloxane and 3 ppm of platinum catalyst in a stirring kettle, and react at 30 rpm / min and 80°C for 45 minutes. After the reaction, add 300 parts by mass of double-terminal vinyl silicone oil and 800 parts by mass of decamethylcyclopentasiloxane, increase the speed to 50 rpm / min, and continue to react at 80°C for 2.5 hours. After the reaction is completed, reduce the temperature of the stirring kettle to 35°C, continue stirring for 30 minutes, and obtain a silicone elastomer gel. The entire reaction is carried out under nitrogen protection.

[0059] Comparative Example 1

[0060] Weigh 70 parts by mass of hydrogenated silicone oil, 10 parts by mass of phenyl-modified silicone oil, 1000 parts by mass of decamethylcyclopentasiloxane and 3 ppm of platinum catalyst in a stirring kettle, and react at 30 rpm / min and 80°C for 45 minutes. After the reaction, add 250 parts by mass of double-terminal vinyl silicone oil and 800 parts by mass of decamethylcyclopentasiloxane, increase the speed to 50 rpm / min, and continue to react at 80°C for 2.5 hours. After the reaction is completed, reduce the temperature of the stirring kettle to 35°C, continue stirring for 30 minutes, and obtain a silicone elastomer gel. The entire reaction is carried out under nitrogen protection.

[0061] Comparative Example 2

[0062] Weigh 70 parts by mass of hydrogenated silicone oil, 10 parts by mass of hyaluronic acid-modified vinyl silicone oil, 1000 parts by mass of decamethylcyclopentasiloxane and 3 ppm of platinum catalyst in a stirring kettle, and react at 30 rpm / min and 80°C for 45 minutes. After the reaction, add 250 parts by mass of double-terminal vinyl silicone oil and 800 parts by mass of decamethylcyclopentasiloxane, increase the speed to 50 rpm / min, and continue to react at 80°C for 2.5 hours. After the reaction is completed, reduce the temperature of the stirring kettle to 35°C, continue stirring for 30 minutes, and obtain a silicone elastomer gel. The entire reaction is carried out under nitrogen protection.

[0063] Comparative Example 3

[0064] Weigh 70 parts by mass of hydrogenated silicone oil, 250 parts by mass of double-terminal vinyl silicone oil, 3 ppm of platinum catalyst and 1800 parts by mass of decamethylcyclopentasiloxane in a stirring kettle. Continue to react at 50 rpm / min and 80°C for 2.5 hours. After the reaction is completed, lower the temperature of the stirring kettle to 35°C and continue stirring for 30 minutes to obtain a silicone elastomer gel. The entire reaction is carried out under nitrogen protection.

[0065] The above embodiments were investigated for stability and application performance, and the results are as follows:

[0066] Stability test results

[0067] Table 1 Stability investigation

[0068]

[0069]

[0070] According to the stability test results, the prepared series of silicone elastomers have good stability, and no oil separation, caking and other phenomena occur during the test process, and a uniform viscous gel state is always maintained. And by comparing Example 1 with Example 7, it can be found that although the cross-linking degree of the elastomer gel is improved, the stability is still well guaranteed, that is, the preparation process of the silicone elastomer has good stability.

[0071] 2. Application performance evaluation

[0072] 2.1 Compatibility test

[0073] Daily chemical formulas are usually composed of a variety of functional components, so the compatibility between the components is particularly important. Conventional silicone elastomer gels have poor compatibility with some functional additives commonly used in personal care, such as oils and waxes, which also limits the scope of use of elastomer gels as excellent skin feel regulators. Therefore, improving the compatibility between elastomer gels and personal care ingredients has become a direction for improving elastomer gels. The present invention mixes the prepared silicone elastomer gel with some commonly used cosmetic ingredients in a 1:1 ratio to test its excellent compatibility. The results are shown in Table 2.

[0074] Table 2 Compatibility test results.

[0075]

[0076]

[0077] Note: P for compatible and F for incompatible

[0078] The results show that the compatibility of silicone elastomer gel with some cosmetic ingredients has been significantly improved after the introduction of phenyl segments, which also ensures the stability of the formula during subsequent use.

[0079] 2.2 Moisture test

[0080] Usually, the moisturizing performance of a product can be tested by testing the water loss rate on the skin surface. The Vapometer is a completely portable instrument that can be used to measure TEWL (transepidermal water loss) values ​​and evaporation rates. This test selected 15 volunteers, and in a test room with a constant temperature of 20°C and a constant humidity of 50%, three 3*3 square centimeter areas on the inner side of the arm were selected as test areas. After rinsing with clean water and standing for 30 minutes, the initial value was measured, and then 0.2g of the elastomer gel sample was evenly applied to the test area, and the measurement was performed again after 30 minutes. The water growth rate can be expressed by the ratio of the difference between the test results before and after and the value before the sample was applied. The final results are shown in the table.

[0081] Table 3 Moisturizing test results

[0082]

[0083]

[0084] As can be seen from the table, after the introduction of hyaluronic acid segments, the moisture content has a significant increase (Example 1 and Comparative Example 1), indicating that the introduction of hyaluronic acid does improve the moisturizing properties of the silicone elastomer. In addition, by comparing Examples 1, 2, and 4, it can be seen that the more hyaluronic acid segments are introduced, the better the moisturizing properties of the prepared silicone elastomer.

[0085] 2.3 Skin feel test

[0086] In order to test the skin feel of the prepared silicone elastomer added to the cosmetic formula, Example 1, Example 6, Example 7 and Comparative Example 3 were applied to a lipstick formula, and the formula is shown in the table.

[0087] Table 4 Lipstick formula

[0088]

[0089]

[0090] In order to ensure the accuracy of the experimental results, the prepared formulas were distributed to 30 test volunteers, who scored them based on their experience using the products. The scoring standard was a 10-point system, with the higher the score, the better the effect. The test results are summarized as follows.

[0091] Table 5 Skin feel test results

[0092] Spreadability Moisturizing Refreshing feeling Moisturizing feeling Recipe 1 8.7 9.1 8.9 8.8 Recipe 2 9.0 9.5 9.1 9.0 Recipe 3 8.5 9.0 8.9 8.9 Comparison 1 8.1 6.3 7.9 8.1

[0093] As shown in the results, according to Formula 1 and Comparison 1, it can be seen that the spreadability and moisturizing properties are significantly improved, indicating that the introduced hyaluronic acid and phenyl segments have brought about this effect; comparing Formula 1 and Formula 2, it can be seen that with the increase in the amount of hyaluronic acid and phenyl segments introduced, the spreadability and moisturizing properties will be further enhanced; comparing Formula 1 and Formula 3, although the cross-linking degree of the elastomer has increased, various skin feel indexes are good, indicating that the increase in the cross-linking degree will not affect the excellent effects brought about by the introduction of hyaluronic acid and phenyl segments.

[0094] From the above results, it can be seen that the silicone elastomer gel involved in the present invention exhibits better spreading, moisturizing, refreshing and nourishing skin feel, and provides a better auxiliary agent for the selection of silicone elastomer gel in future cosmetic formulations.

[0095] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A silicone elastomer, characterized in that: It includes side chain, double vinyl-terminated polysiloxane, hyaluronic acid-modified single-terminated vinyl polysiloxane, phenyl-modified vinyl polysiloxane, carrier fluid and catalyst for hydrosilylation; The polysiloxane has at least two SiH groups in the side chain; The components are in parts by weight as follows: 50-100 parts by weight of side chains, 5-30 parts by weight of hyaluronic acid-modified single-end vinyl polysiloxane, 5-30 parts by weight of phenyl-modified vinyl polysiloxane, 50-500 parts by weight of divinyl-terminated polysiloxane, 1000-5000 parts by weight of carrier fluid, and 1-10 ppm of platinum catalyst.

2. The organic silicone elastomer according to claim 1, characterized in that: The ratio of the amount of D segments to D' segments in the polysiloxane having at least two SiH groups in the side chain is 2-20, the weight percentage of H in the SiH groups in the molecule is 0.05%-0.5%, and the molecular weight of the molecule is 1000-20000.

3. The organic silicone elastomer according to claim 1, characterized in that: The divinyl-terminated polysiloxane has a vinyl content of 0.15%-5%, a polymerization degree of 10-500, and a molecular weight of 1000-20000.

4. The organic silicone elastomer according to claim 1, characterized in that: The hyaluronic acid used in the hyaluronic acid-modified single-end vinyl polysiloxane is unmodified low-molecular-weight hyaluronic acid, which reacts with dimethylvinylethoxysilane under the action of an organic titanium catalyst to obtain the hyaluronic acid-modified single-end vinyl polysiloxane.

5. The organic silicon elastomer according to claim 1, characterized in that: The phenyl-modified vinyl polysiloxane has a vinyl content of 0.1%-0.6%, a phenyl content of 25-50%, and a polymerization degree of 150-300.

6. The organic silicon elastomer according to claim 1, characterized in that: The carrier fluid is selected from decamethylcyclopentasiloxane, polydimethylsiloxane or isomeric alkanes.

7. The organic silicon elastomer according to claim 1, characterized in that: The catalyst used for the hydrosilylation is a platinum metal catalyst, which is a chloroplatinic acid platinum catalyst or a Karstedt platinum catalyst. The concentration of the platinum metal catalyst is 1-10 ppm.

8. A method for preparing an organosilicon elastomer according to any one of claims 1 to 7, characterized in that The steps include: S1. Place polysiloxane with at least two SiH groups, hyaluronic acid-modified vinyl silicone oil, phenyl-modified vinyl silicone oil, part of the carrier fluid and the platinum catalyst in a clean stirring tank, introduce nitrogen throughout the process, stir at a speed of 10-80 rpm / min, at a reaction temperature of 50-120°C, and for a reaction time of 0.5-1.5 h; S2. After the reaction step S1 is completed, the double-terminal vinyl silicone oil and the remaining carrier fluid are added to the stirred tank and the reaction is continued at a constant temperature for 2-5h; S3. After the gel is obtained by reaction, the temperature is cooled to 25-35°C and stirring is continued for 0.5-1h to obtain the silicone elastomer.

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