Silicone rubber, method for producing the same, and use thereof in humanoid robots

Abstract

This invention discloses a silicone rubber, its preparation method, and its application in humanoid robots. It relates to the field of silicone rubber technology. This invention uses methyl vinyl silicone rubber, reinforcing agents, structural control agents, and vulcanizing agents as raw materials to prepare silicone rubber. This not only simplifies the raw material formulation and feeding process, reducing raw material costs, but also gives the prepared silicone rubber excellent mechanical properties, high and low temperature resistance, electrical insulation, chemical resistance, and weather resistance. Furthermore, this silicone rubber can simulate the feel of human skin and is suitable for the processing of humanoid robots.

Description

Technical Field

[0001] This invention relates to the field of silicone rubber technology, specifically to a silicone rubber, its preparation method, and its application in humanoid robots. Background Technology

[0002] Silicone rubber is widely used in industry, medical, and electronics fields, and has the following excellent properties: It has good resistance to high and low temperatures, maintaining elasticity and stability even at extreme temperatures; it has excellent electrical insulation properties, with its dielectric strength remaining almost unaffected by temperature within the range of 20~200℃; it has strong chemical and weather resistance, resisting not only the erosion of acids, alkalis, salt solutions, and organic solvents, but also ozone, ultraviolet radiation, and oxidative degradation; and it is non-toxic, odorless, and has good biocompatibility and safety.

[0003] In recent years, the application of silicone rubber in humanoid robots has gradually become a research hotspot. Its unique material properties provide important support for biomimetic design, interactive experience, and functional enhancement. In the future, with the integration of materials science and AI technology, silicone rubber has great potential for development in areas such as biomimetic skin, tactile sensing, flexible joints, facial expression simulation, and biocompatibility. This will further promote the penetration of robots into medical, service, and home scenarios, becoming an important technological breakthrough for achieving a "human-like" experience.

[0004] The main drawback of silicone rubber is its poor mechanical properties. Its tensile strength, tear strength, and abrasion resistance are far inferior to most synthetic rubbers, making it prone to wear or breakage. Therefore, it is unsuitable for applications requiring high mechanical strength. To better meet the application needs of humanoid robots, this invention improves the mechanical properties of silicone rubber by optimizing the raw material formulation. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method for preparing silicone rubber, which not only has excellent mechanical properties, high and low temperature resistance, electrical insulation, chemical resistance and weather resistance, but also can simulate the touch of human skin and is suitable for the processing of humanoid robots.

[0006] The technical problem to be solved by this invention is achieved by the following technical solution:

[0007] One objective of this invention is to provide a method for preparing silicone rubber, comprising the following steps:

[0008] S1. Add methyl vinyl silicone rubber, reinforcing agent and structure control agent to a kneader and mix to obtain rubber compound;

[0009] S2. Mix the rubber compound and vulcanizing agent in a two-roll mill, vulcanize and mold to obtain silicone rubber.

[0010] Furthermore, the mass ratio of the methyl vinyl silicone rubber, reinforcing agent, structuring control agent, and vulcanizing agent is 100:(30~50):(5~15):(0.5~5). By controlling the amount of raw materials within a certain range, silicone rubber with excellent comprehensive properties is prepared.

[0011] Further, the methyl vinyl silicone rubber has a molecular weight of 450,000 to 700,000 and a vinyl content of 0.1% to 0.3% (mole fraction). In this invention, methyl vinyl silicone rubber with a specific molecular weight and vinyl content is selected as the raw material.

[0012] Furthermore, the structure control agent includes, but is not limited to, one or more of hydroxyl silicone oil, vinyl hydroxyl silicone oil, diphenyl dihydroxy silicone oil, dimethyl dimethoxysilane, dimethyl diethoxysilane, methyl phenyl dimethoxysilane, methyl phenyl diethoxysilane, hexamethyl disilazane, vinyl silazane, vinyl trimethoxysilane, and vinyl triethoxysilane. The main function of the structure control agent in silicone rubber is to prevent and delay the structuring phenomenon between the silicone rubber and the reinforcing agent, reduce the gel content of the silicone rubber, and improve the processing performance of the silicone rubber.

[0013] Furthermore, the vulcanizing agent includes, but is not limited to, one or more of benzoyl peroxide, 2,4-dichlorobenzoyl peroxide, 2,5-dimethyl-2,5-di-tert-butylperoxide, and dicumyl peroxide. The vulcanizing agent transforms the linear molecular structure of silicone rubber into a network structure through a chemical reaction, improving the physicochemical properties of silicone rubber, enhancing its heat resistance and solvent resistance. The vulcanized silicone rubber is easier to mold during processing, and the molded product has stable dimensions and is less prone to deformation.

[0014] Furthermore, the vulcanization molding process involves a first stage of vulcanization on a flat vulcanizing machine, followed by a second stage of vulcanization in an oven. Preferably, the first stage of vulcanization is performed at a temperature of 160-180°C for 5-15 minutes and a pressure of 5-15 MPa; the second stage of vulcanization is performed at a temperature of 190-210°C for 1-3 hours. This secondary vulcanization improves the cross-linking structure within the silicone rubber, ensures complete reaction of the vulcanizing agent, improves the mechanical properties of the silicone rubber, enhances its heat resistance and weather resistance, and extends its service life.

[0015] Further, the reinforcing agent is prepared from sodium silicate, concentrated sulfuric acid, 2-propenyl N,N,N',N'-tetraisopropylphosphorous diamine, dispersant, and initiator. Sodium silicate, 2-propenyl N,N,N',N'-tetraisopropylphosphorous diamine, dispersant, and initiator are first added to water, then concentrated sulfuric acid is added dropwise until no more precipitate forms. The mixture is then filtered, washed with water, and dried to obtain the reinforcing agent. The reinforcing agent not only improves the mechanical properties of silicone rubber but also enhances its thermal stability. In this invention, while preparing nano-silica using sodium silicate and concentrated sulfuric acid via precipitation, 2-propenyl N,N,N',N'-tetraisopropylphosphorous diamine undergoes a polymerization reaction under the action of an initiator, thereby in-situ polymerization of polyphosphorous diamine in nano-silica to obtain a polyphosphorous diamine / nano-silica composite material, which is then used as a reinforcing agent for silicone rubber. Compared to using nano-silica as a reinforcing agent, polyphosphoramide / nano-silica composite material can exert a better reinforcing effect, and can achieve uniform dispersion of the reinforcing agent in silicone rubber without adding coupling agent, thus improving the compatibility between the reinforcing agent and silicone rubber.

[0016] Preferably, the dispersant includes, but is not limited to, one or more of hexadecyltrimethylammonium bromide, polyvinyl alcohol, sodium dodecylbenzenesulfonate, polyethylene glycol, and polyvinylpyrrolidone. The dispersant's function is to disperse 2-propenyl N,N,N',N'-tetraisopropylphosphonic diamine in water, preventing its aggregation and precipitation, and to generate polyphosphonic diamine through in-situ polymerization in nano-silica via suspension polymerization.

[0017] Preferably, the initiator includes, but is not limited to, one or more of potassium persulfate, ammonium persulfate, and sodium persulfate, and water-soluble initiators are preferred. In this invention, water is used as a solvent, and a water-soluble initiator is used to initiate the free radical polymerization reaction at room temperature, thereby improving the environmental friendliness of the process and reducing costs.

[0018] Preferably, the mass ratio of sodium silicate, 2-propenyl N,N,N',N'-tetraisopropylphosphorous diamine, dispersant, and initiator is 30 : (5~10) : (0.25~1) : (0.05~0.5). In this invention, under the action of the dispersant and initiator, an appropriate amount of 2-propenyl N,N,N',N'-tetraisopropylphosphorous diamine is used to carry out an in-situ polymerization reaction of nano-silica.

[0019] Preferably, the sodium silicate has a purity of ≥99%. High-quality sodium silicate is used as a raw material to prepare nano-silica. The hydroxyl groups on the surface of nano-silica have reactive centers that can form hydrogen bonds with siloxanes in silicone rubber, improving the strength and toughness of the silicone rubber, thus acting as a reinforcing agent. Simultaneously, it improves the processing performance and anti-aging properties of silicone rubber.

[0020] The second objective of this invention is to provide a silicone rubber prepared by the aforementioned preparation method.

[0021] A third objective of this invention is to provide the application of the aforementioned silicone rubber in humanoid robots. Specifically, the silicone rubber described in this invention can be applied to bionic skin, soft sensors, seals, waterproof coatings, and other applications.

[0022] The beneficial effects of this invention are: This invention uses methyl vinyl silicone rubber, reinforcing agent, structure control agent and vulcanizing agent as raw materials to prepare silicone rubber, which not only simplifies the raw material formulation and feeding process and reduces the raw material cost, but also makes the prepared silicone rubber have excellent mechanical properties, high and low temperature resistance, electrical insulation, chemical resistance and weather resistance, etc., and can simulate the touch of human skin, which is suitable for the processing of humanoid robots. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific embodiments.

[0024] The following examples and comparative examples illustrate the sources of raw materials:

[0025] The methyl vinyl silicone rubber was purchased from Zhejiang Hengyecheng Organosilicon Co., Ltd., model number 110-3, with a molecular weight of 600,000 to 700,000 and a vinyl content of 0.19 to 0.24% (in molar fraction).

[0026] The hydroxyl silicone oil was purchased from Shandong Huachen New Materials Co., Ltd., and its model number is HC09.

[0027] Methylphenyl dimethoxysilane was purchased from Shandong Guohua Chemical Co., Ltd.

[0028] Hexamethyldisilazane was purchased from Shandong Huian Chemical Co., Ltd.

[0029] Sodium silicate was purchased from Jinan Minghao Chemical Co., Ltd.

[0030] Example 1

[0031] (1) Under stirring conditions, add 30 parts sodium silicate, 5 parts 2-propenyl N,N,N',N'-tetraisopropylphosphine diamine, 0.5 parts hexadecyltrimethylammonium bromide and 0.1 parts potassium persulfate to 150 parts water by weight. Then add concentrated sulfuric acid dropwise until no more precipitate is formed. Filter, wash with water, and dry under vacuum at 50°C to obtain the reinforcing agent.

[0032] (2) By weight, 100 parts of methyl vinyl silicone rubber, 30 parts of the reinforcing agent prepared in step (1) and 10 parts of hydroxyl silicone oil are added to a kneader and mixed at 170°C for 2 hours to obtain the rubber compound.

[0033] (3) By weight, the rubber compound prepared in step (2) is mixed with 1 part of benzoyl peroxide in a two-roll mill for 30 min, and then vulcanized in a flat vulcanizing machine (vulcanization temperature is 160℃, vulcanization time is 15 min, vulcanization pressure is 10 MPa), and then vulcanized in an oven (vulcanization temperature is 210℃, vulcanization time is 1.5 h) to obtain silicone rubber.

[0034] Example 2

[0035] (1) Under stirring conditions, add 30 parts sodium silicate, 8 parts 2-propenyl N,N,N',N'-tetraisopropylphosphine diamine, 0.5 parts polyvinyl alcohol and 0.25 parts potassium persulfate to 150 parts water by weight. Then add concentrated sulfuric acid dropwise until no more precipitate is formed. Filter, wash with water, and vacuum dry at 50°C to obtain the reinforcing agent.

[0036] (2) By weight, 100 parts of methyl vinyl silicone rubber, 40 parts of the reinforcing agent prepared in step (1) and 5 parts of methyl phenyl dimethoxysilane are added to a kneader and mixed at 180°C for 2 hours to obtain the rubber compound.

[0037] (3) By weight, the rubber compound prepared in step (2) is mixed with 2 parts of dicumyl peroxide in a two-roll mill for 20 min, and then vulcanized in a flat vulcanizing mill (vulcanization temperature is 180℃, vulcanization time is 5 min, vulcanization pressure is 12 MPa), and then vulcanized in an oven (vulcanization temperature is 200℃, vulcanization time is 2 h) to obtain silicone rubber.

[0038] Example 3

[0039] (1) Under stirring conditions, add 30 parts sodium silicate, 10 parts 2-propenyl N,N,N',N'-tetraisopropylphosphine diamine, 1 part sodium dodecylbenzenesulfonate and 0.5 parts sodium persulfate to 150 parts water by weight. Then add concentrated sulfuric acid dropwise until no more precipitate is formed. Filter, wash with water, and dry under vacuum at 50°C to obtain the reinforcing agent.

[0040] (2) By weight, 100 parts of methyl vinyl silicone rubber, 50 parts of the reinforcing agent prepared in step (1) and 15 parts of hexamethyldisilazane are added to a kneader and mixed. The mixture is then kneaded at 170°C for 3 hours to obtain the rubber compound.

[0041] (3) By weight, the rubber compound prepared in step (2) is mixed with 3 parts of 2,5-dimethyl-2,5-di-tert-butylperoxide in a two-roll mill for 30 min, and then vulcanized in a flat vulcanizing machine (vulcanization temperature is 170℃, vulcanization time is 10 min, vulcanization pressure is 15 MPa), and then vulcanized in an oven (vulcanization temperature is 190℃, vulcanization time is 3 h) to obtain silicone rubber.

[0042] Example 4

[0043] (1) Under stirring conditions, add 30 parts sodium silicate, 10 parts 2-propenyl N,N,N',N'-tetraisopropylphosphine diamine, 0.5 parts polyethylene glycol and 0.1 parts ammonium persulfate to 150 parts water by weight. Then add concentrated sulfuric acid dropwise until no more precipitate is formed. Filter, wash with water, and vacuum dry at 50°C to obtain the reinforcing agent.

[0044] (2) By weight, 100 parts of methyl vinyl silicone rubber, 40 parts of the reinforcing agent prepared in step (1) and 10 parts of hydroxyl silicone oil are added to a kneader and mixed at 180°C for 2 hours to obtain the rubber compound.

[0045] (3) By weight, the rubber compound prepared in step (2) is mixed with 3 parts of 2,4-dichlorobenzoyl peroxide in a two-roll mill for 30 min, and then vulcanized in a flat vulcanizing mill (vulcanization temperature is 180℃, vulcanization time is 10 min, vulcanization pressure is 10 MPa), and then vulcanized in an oven (vulcanization temperature is 200℃, vulcanization time is 2 h) to obtain silicone rubber.

[0046] Example 5

[0047] (1) Under stirring conditions, add 30 parts sodium silicate, 10 parts 2-propenyl N,N,N',N'-tetraisopropylphosphonic diamine, 0.8 parts polyvinylpyrrolidone and 0.4 parts potassium persulfate to 150 parts water by weight, then add concentrated sulfuric acid dropwise until no more precipitate is formed, filter, wash with water, and vacuum dry at 50°C to obtain the reinforcing agent.

[0048] (2) By weight, 100 parts of methyl vinyl silicone rubber, 45 parts of the reinforcing agent prepared in step (1) and 10 parts of methyl phenyl dimethoxysilane are added to a kneader and mixed at 160°C for 2 hours to obtain the rubber compound.

[0049] (3) By weight, the rubber compound prepared in step (2) is mixed with 5 parts of benzoyl peroxide in a two-roll mill for 30 min, and then vulcanized in a flat vulcanizing mill (vulcanization temperature is 180℃, vulcanization time is 15 min, vulcanization pressure is 12 MPa), and then vulcanized in an oven (vulcanization temperature is 200℃, vulcanization time is 3 h) to obtain silicone rubber.

[0050] Example 6

[0051] (1) Under stirring conditions, add 30 parts sodium silicate, 10 parts 2-propenyl N,N,N',N'-tetraisopropylphosphine diamine, 0.5 parts hexadecyltrimethylammonium bromide and 0.3 parts ammonium persulfate to 150 parts water by weight. Then add concentrated sulfuric acid dropwise until no more precipitate is formed. Filter, wash with water, and dry under vacuum at 50°C to obtain the reinforcing agent.

[0052] (2) By weight, 100 parts of methyl vinyl silicone rubber, 50 parts of the reinforcing agent prepared in step (1) and 12 parts of hydroxyl silicone oil are added to a kneader and mixed at 170°C for 2 hours to obtain the rubber compound.

[0053] (3) By weight, the rubber compound prepared in step (2) is mixed with 3 parts of 2,5-dimethyl-2,5-di-tert-butylperoxide in a two-roll mill for 30 min, and then vulcanized in a flat vulcanizing mill (vulcanization temperature is 180℃, vulcanization time is 10 min, vulcanization pressure is 15 MPa), and then vulcanized in an oven (vulcanization temperature is 210℃, vulcanization time is 3 h) to obtain silicone rubber.

[0054] Comparative Example 1

[0055] The preparation steps are the same as in Example 6, except that the amount of reinforcing agent in step (2) of Example 6 is adjusted to 25 parts.

[0056] (1) Under stirring conditions, add 30 parts sodium silicate, 10 parts 2-propenyl N,N,N',N'-tetraisopropylphosphine diamine, 0.5 parts hexadecyltrimethylammonium bromide and 0.3 parts ammonium persulfate to 150 parts water by weight. Then add concentrated sulfuric acid dropwise until no more precipitate is formed. Filter, wash with water, and dry under vacuum at 50°C to obtain the reinforcing agent.

[0057] (2) By weight, 100 parts of methyl vinyl silicone rubber, 25 parts of the reinforcing agent prepared in step (1) and 12 parts of hydroxyl silicone oil are added to a kneader and mixed at 170°C for 2 hours to obtain the rubber compound.

[0058] (3) By weight, the rubber compound prepared in step (2) is mixed with 3 parts of 2,5-dimethyl-2,5-di-tert-butylperoxide in a two-roll mill for 30 min, and then vulcanized in a flat vulcanizing mill (vulcanization temperature is 180℃, vulcanization time is 10 min, vulcanization pressure is 15 MPa), and then vulcanized in an oven (vulcanization temperature is 210℃, vulcanization time is 3 h) to obtain silicone rubber.

[0059] Comparative Example 2

[0060] The preparation steps are the same as in Example 6, except that 2-propenyl N,N,N',N'-tetraisopropylphosphine diamine in step (1) of Example 6 is replaced with acrylamide.

[0061] (1) Under stirring conditions, add 30 parts sodium silicate, 10 parts acrylamide, 0.5 parts cetyltrimethylammonium bromide and 0.3 parts ammonium persulfate to 150 parts water by weight, then add concentrated sulfuric acid dropwise until no more precipitate is formed, filter, wash with water, and dry at 50°C to obtain the reinforcing agent.

[0062] (2) By weight, 100 parts of methyl vinyl silicone rubber, 50 parts of the reinforcing agent prepared in step (1) and 12 parts of hydroxyl silicone oil are added to a kneader and mixed at 170°C for 2 hours to obtain the rubber compound.

[0063] (3) By weight, the rubber compound prepared in step (2) is mixed with 3 parts of 2,5-dimethyl-2,5-di-tert-butylperoxide in a two-roll mill for 30 min, and then vulcanized in a flat vulcanizing mill (vulcanization temperature is 180℃, vulcanization time is 10 min, vulcanization pressure is 15 MPa), and then vulcanized in an oven (vulcanization temperature is 210℃, vulcanization time is 3 h) to obtain silicone rubber.

[0064] Comparative Example 3

[0065] The preparation steps are the same as in Example 6, except that 2-propenyl N,N,N',N'-tetraisopropylphosphine diamine in step (1) of Example 6 is replaced with methyl acrylate.

[0066] (1) Under stirring conditions, add 30 parts sodium silicate, 10 parts methyl acrylate, 0.5 parts hexadecyltrimethylammonium bromide and 0.3 parts ammonium persulfate to 150 parts water by weight, then add concentrated sulfuric acid dropwise until no more precipitate is formed, filter, wash with water, and dry at 50°C to obtain the reinforcing agent.

[0067] (2) By weight, 100 parts of methyl vinyl silicone rubber, 50 parts of the reinforcing agent prepared in step (1) and 12 parts of hydroxyl silicone oil are added to a kneader and mixed at 170°C for 2 hours to obtain the rubber compound.

[0068] (3) By weight, the rubber compound prepared in step (2) is mixed with 3 parts of 2,5-dimethyl-2,5-di-tert-butylperoxide in a two-roll mill for 30 min, and then vulcanized in a flat vulcanizing mill (vulcanization temperature is 180℃, vulcanization time is 10 min, vulcanization pressure is 15 MPa), and then vulcanized in an oven (vulcanization temperature is 210℃, vulcanization time is 3 h) to obtain silicone rubber.

[0069] Comparative Example 4

[0070] The preparation steps are the same as in Example 6, except that 2-propenyl N,N,N',N'-tetraisopropylphosphine diamine and ammonium persulfate are removed from step (1) of Example 6.

[0071] (1) Under stirring conditions, add 30 parts sodium silicate and 0.5 parts hexadecyltrimethylammonium bromide to 150 parts water by weight, then add concentrated sulfuric acid dropwise until no more precipitate is formed. Filter, wash with water, and dry at 50°C to obtain the reinforcing agent.

[0072] (2) By weight, 100 parts of methyl vinyl silicone rubber, 50 parts of the reinforcing agent prepared in step (1) and 12 parts of hydroxyl silicone oil are added to a kneader and mixed at 170°C for 2 hours to obtain the rubber compound.

[0073] (3) By weight, the rubber compound prepared in step (2) is mixed with 3 parts of 2,5-dimethyl-2,5-di-tert-butylperoxide in a two-roll mill for 30 min, and then vulcanized in a flat vulcanizing mill (vulcanization temperature is 180℃, vulcanization time is 10 min, vulcanization pressure is 15 MPa), and then vulcanized in an oven (vulcanization temperature is 210℃, vulcanization time is 3 h) to obtain silicone rubber.

[0074] Comparative Example 5

[0075] The preparation steps are the same as in Example 6, except that 2-propenyl N,N,N',N'-tetraisopropylphosphine diamine and ammonium persulfate are removed in step (1) of Example 6, and silane coupling agent KH560 is added in step (2).

[0076] (1) Under stirring conditions, add 30 parts sodium silicate and 0.5 parts hexadecyltrimethylammonium bromide to 150 parts water by weight, then add concentrated sulfuric acid dropwise until no more precipitate is formed. Filter, wash with water, and dry at 50°C to obtain the reinforcing agent.

[0077] (2) By weight, 100 parts of methyl vinyl silicone rubber, 50 parts of the reinforcing agent prepared in step (1), 5 parts of silane coupling agent KH560 and 12 parts of hydroxyl silicone oil are added to a kneader and mixed at 170°C for 2 hours to obtain the rubber compound.

[0078] (3) By weight, the rubber compound prepared in step (2) is mixed with 3 parts of 2,5-dimethyl-2,5-di-tert-butylperoxide in a two-roll mill for 30 min, and then vulcanized in a flat vulcanizing mill (vulcanization temperature is 180℃, vulcanization time is 10 min, vulcanization pressure is 15 MPa), and then vulcanized in an oven (vulcanization temperature is 210℃, vulcanization time is 3 h) to obtain silicone rubber.

[0079] The mechanical properties of the silicone rubber prepared in the above examples and comparative examples were tested, and the results are shown in Table 1.

[0080] Tensile strength and elongation at break were tested in accordance with GB / T 528-2009 "Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber".

[0081] Tear strength was tested according to GB / T 529-2008 "Determination of tear strength of vulcanized rubber or thermoplastic rubber";

[0082] The resilience was tested according to GB / T 1681-2009 "Determination of Resilience of Vulcanized Rubber".

[0083] Table 1

[0084]

[0085] As can be seen from Table 1, the silicone rubbers prepared in Examples 1-6 all exhibit higher tensile strength, elongation at break, tear strength, and resilience than those in Comparative Examples 1-5. Therefore, the silicone rubber prepared using the raw material formulation and reinforcing agent described in this invention possesses excellent mechanical properties.

[0086] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing silicone rubber, characterized in that, Includes the following steps: S1. Add methyl vinyl silicone rubber, reinforcing agent and structure control agent to a kneader and mix to obtain rubber compound; S2. Mix the rubber compound and vulcanizing agent in a two-roll mill, vulcanize and mold to obtain silicone rubber.

2. The preparation method according to claim 1, characterized in that: The mass ratio of the methyl vinyl silicone rubber, reinforcing agent, structuring control agent, and vulcanizing agent is 100 : (30~50) : (5~15) : (0.5~5).

3. The preparation method according to claim 1, characterized in that: The methyl vinyl silicone rubber has a molecular weight of 450,000 to 700,000 and a vinyl content of 0.1% to 0.3% in mole fraction.

4. The preparation method according to claim 1, characterized in that: The structuring control agent is one or more of the following: hydroxyl silicone oil, vinyl hydroxyl silicone oil, diphenyl dihydroxyl silicone oil, dimethyl dimethoxysilane, dimethyl diethoxysilane, methyl phenyl dimethoxysilane, methyl phenyl diethoxysilane, hexamethyl disilazane, vinyl silazane, vinyl trimethoxysilane, and vinyl triethoxysilane.

5. The preparation method according to claim 1, characterized in that: The vulcanizing agent is one or more of benzoyl peroxide, 2,4-dichlorobenzoyl peroxide, 2,5-dimethyl-2,5-di-tert-butylperoxide, and dicumyl peroxide.

6. The preparation method according to claim 1, characterized in that: The vulcanization molding process involves first performing a first-stage vulcanization on a flat vulcanizing machine, followed by a second-stage vulcanization in an oven. Preferably, the temperature of the first-stage vulcanization is 160~180℃, the time is 5~15min, and the pressure is 5~15MPa; the temperature of the second-stage vulcanization is 190~210℃, and the time is 1~3h.

7. The preparation method according to claim 1, characterized in that: The reinforcing agent is made from sodium silicate, concentrated sulfuric acid, 2-propenyl N,N,N',N'-tetraisopropylphosphorous diamine, dispersant and initiator. Sodium silicate, 2-propenyl N,N,N',N'-tetraisopropylphosphorous diamine, dispersant and initiator are first added to water, and then concentrated sulfuric acid is added dropwise until no more precipitate is formed. After filtration, washing with water and drying, the reinforcing agent is obtained.

8. The preparation method according to claim 7, characterized in that: The dispersant is one or more of hexadecyltrimethylammonium bromide, polyvinyl alcohol, sodium dodecylbenzenesulfonate, polyethylene glycol, and polyvinylpyrrolidone; Preferably, the initiator is one or more of potassium persulfate, ammonium persulfate, and sodium persulfate; Preferably, the mass ratio of sodium silicate, 2-propenyl N,N,N',N'-tetraisopropylphosphine diamine, dispersant and initiator is 30 : (5~10) : (0.25~1) : (0.05~0.5); Preferably, the purity of the sodium silicate is ≥99%.

9. Silicone rubber prepared by the preparation method according to any one of claims 1 to 8.

10. The application of the silicone rubber according to claim 9 in a humanoid robot.

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