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High-temperature-resistant antibacterial liquid silicone rubber and preparation method thereof

A technology of liquid silicone rubber and high temperature resistance, applied in the field of liquid silicone rubber, can solve the problems of the influence of silicone rubber components and the inability to meet various use requirements, and achieve the effects of excellent antibacterial performance, high resistance performance, and improved barrier performance.

Inactive Publication Date: 2017-05-31
镇江高美新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the silicone rubber in the prior art is made of a single component, and the silicone rubber is limited by the components and cannot meet various application requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high temperature resistant antibacterial liquid silicone rubber, the preparation method of which is:

[0024] (1) Preparation of gum base I: Add vinylpolysiloxane with a viscosity of 8500cp measured at 25°C and vinylpolysiloxane with a viscosity of 4800cp measured at 25°C into the kneader at a ratio of 1:6 by weight, Knead at room temperature for 2h;

[0025] (2) Preparation of Base II: Perhydropolysilazane with a viscosity of 1500cp measured at 25°C, perhydropolysilazane with a viscosity of 15000cp measured at 25°C and vinyl polysiloxane with a viscosity of 8000cp measured at 25°C Add it into the kneader according to the weight ratio of 5:2:1, and knead at room temperature for 3 hours;

[0026] (3) Preparation of additives: 40 parts of polyoxypropylene glycol, 0.12 parts of dibutyltin dilaurate, 4 parts of 3-methyl-4-isopropylphenol, 0.08 parts of benzoyl peroxide, 5 parts of titanium dioxide, poly After stirring 11 parts of vinyl chloride and 7 parts of tributyl c...

Embodiment 2

[0031] A high temperature resistant antibacterial liquid silicone rubber, the preparation method of which is:

[0032] (1) Preparation of gum base I: Add vinylpolysiloxane with a viscosity of 7000cp measured at 25°C and vinylpolysiloxane with a viscosity of 4000cp measured at 25°C into the kneader at a ratio of 1:5 by weight, Knead at room temperature for 2h;

[0033] (2) Preparation of Base II: perhydropolysilazane with a viscosity of 1200cp at 25°C, perhydropolysilazane with a viscosity of 16000cp at 25°C and vinylpolysiloxane with a viscosity of 6300cp at 25°C Add it into the kneader according to the weight ratio of 4:3:1, and knead at room temperature for 3 hours;

[0034] (3) Preparation of additives: 42 parts of polyoxypropylene glycol, 0.08 part of dibutyltin dilaurate, 6 parts of 3-methyl-4-isopropylphenol, 0.1 part of benzoyl peroxide, 6 parts of titanium dioxide, poly After stirring 9 parts of vinyl chloride and 6 parts of tributyl citrate at a temperature of 15°C ...

Embodiment 3

[0039] A high temperature resistant antibacterial liquid silicone rubber, the preparation method of which is:

[0040] (1) Preparation of gum base I: Add vinylpolysiloxane with a viscosity of 6000cp measured at 25°C and vinylpolysiloxane with a viscosity of 3000cp measured at 25°C into the kneader at a ratio of 1:4 by weight, Knead at room temperature for 1 h;

[0041](2) Preparation of Base II: perhydropolysilazane with a viscosity of 1000cp at 25°C, perhydropolysilazane with a viscosity of 12000cp at 25°C and vinylpolysiloxane with a viscosity of 6000cp at 25°C Add it into the kneader according to the weight ratio of 4:2:1, and knead at room temperature for 2 hours;

[0042] (3) Preparation of additives: 35 parts of polyoxypropylene glycol, 0.05 part of dibutyltin dilaurate, 2 parts of 3-methyl-4-isopropylphenol, 0.03 part of benzoyl peroxide, 2 parts of titanium dioxide, poly After stirring 8 parts of vinyl chloride and 5 parts of tributyl citrate at a temperature of 10°C...

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Abstract

The invention relates to high-temperature-resistant antibacterial liquid silicone rubber. The high-temperature-resistant antibacterial liquid silicone rubber comprises a component A and a component B, wherein the component A comprises the following ingredients in parts by weight: 120 parts of base gum I, 0.03-0.6 part of a platinum complex, 5-12 parts of silicon dioxide and 3-6 parts of an additive; the component B comprises the following ingredients in parts by weight: 100 parts of base gum II, 3-8 parts of hydrogen silicone oil, 4-9 parts of butyl oleate, 0.5-2.3 parts of 2-benzothiazolethiol, 0.8-3.2 parts of tert-butyldiphenylchlorosilane, 1-4 parts of tetramethylammonium hydroxide, 0.6-4.2 parts of 3-methacryloxypropyltrimethoxysilane and 2.4-4.8 parts of sodium dodecyl sulfate. The high-temperature-resistant antibacterial liquid silicone rubber has excellent high temperature resistance and good antibacterial performance, the application field of the high-temperature-resistant antibacterial liquid silicone rubber is expanded, and a preparation method of the high-temperature-resistant antibacterial liquid silicone rubber is also provided.

Description

technical field [0001] The invention relates to a liquid silicone rubber, in particular to a high temperature resistant antibacterial liquid silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber refers to the rubber whose main chain is composed of silicon and oxygen atoms alternately, and there are usually two organic groups attached to the silicon atoms. Ordinary silicone rubber is mainly composed of silicone chains containing methyl groups and a small amount of vinyl groups. The introduction of phenyl groups can improve the high and low temperature resistance of silicone rubber, and the introduction of trifluoropropyl and cyano groups can improve the resistance of silicone rubber. Heat and oil resistance. Silicone rubber has good low temperature resistance, and generally can still work at -55°C. After the introduction of phenyl groups, it can reach -73°C. The heat resistance of silicone rubber is also outstanding. It can work for...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/16C08L71/02C08L27/06C08L83/05C08K13/02C08K5/14C08K3/22C08K5/11C08K3/36
CPCC08L83/04C08L83/16C08L2201/04C08L2201/08C08L2205/02C08L2205/025C08L2205/035C08L71/02C08L27/06C08K13/02C08K5/14C08K2003/2241C08K5/11C08K3/36
Inventor 王超陆磊
Owner 镇江高美新材料有限公司