Matte single-component room temperature vulcanized silicone rubber and preparation method thereof

A room temperature vulcanization, one-component technology, applied in the field of rubber preparation, can solve problems such as unstable storage, complicated process, and unreliable matte film

Inactive Publication Date: 2019-07-19
佛山市天宝利硅工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a matte single-component room temperature vulcanized silicone rubber and a preparation method thereof, which solves the technical problems of the existing matte single-component cured silicone rubber, which are complex in storage and unstable and the matte film is not reliable

Method used

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  • Matte single-component room temperature vulcanized silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 30 parts of α,ω-dihydroxypolydimethylsiloxane with a viscosity of 20Pa.s, 2 parts of polydimethylsiloxane, 60 parts of nano-calcium carbonate, and 1 part of titanium dioxide into the kneader, Stir and dehydrate the base material at a speed of 30r / min, a temperature of 120°C, and a vacuum of -0.09MPa for 2 hours to prepare the base material. When the base material is cooled to 60°C, put the base material into a power mixer and add 3 parts of methyl Trimethoxysilane, 2 parts of a complex of ethyl acetoacetate and tetraisopropyl titanate, 1 part of γ-aminopropyltriethoxysilane and 1 part of vinyltrimethoxysilane, vacuumed to Under -0.09MPa, stir for 50 minutes to discharge the material, and pack it in a 300ml HDPE tube.

Embodiment 2

[0025] Add 70 parts of α,ω-dihydroxy polydimethylsiloxane with a viscosity of 80Pa.s, 2 parts of polydimethylsiloxane, 20 parts of nano-calcium carbonate, and 1 part of titanium dioxide into the kneader, The base material was prepared by stirring and dehydrating for 2 hours at a rotation speed of 30r / min, a temperature of 120°C, and a vacuum of -0.09MPa. When the base material was cooled to 60°C, the base material was poured into a power mixer, and 3.5 parts of methyl Trimethoxysilane, 1.5 parts of a complex of ethyl acetoacetate and tetraisopropyl titanate, 1 part of γ-aminopropyltriethoxysilane and γ-(2,3-glycidoxy) The mixture of propyltrimethoxysilane and 1 part of vinyltriethoxysilane is vacuumed to -0.09MPa, stirred for 50 minutes and discharged, and packed in a 300ml HDPE tube.

Embodiment 3

[0027] 40 parts of α, ω-trimethoxy-terminated polydimethylsiloxane with a viscosity of 20Pa.s, 3 parts of polydimethylsiloxane, 40 parts of nano-calcium carbonate, and 10 parts of fumed white carbon Black, add 2 parts of titanium dioxide into the kneader, stir and dehydrate for 2 hours at a speed of 30r / min, a temperature of 120°C, and a vacuum of -0.09MPa to prepare the base material. When the base material is cooled to 60°C, put the base material into To a power mixer, add 2 parts of methyltrimethoxysilane, 1 part of a complex of ethyl acetoacetate and tetraisopropyl titanate, 0.5 parts of γ-aminopropyltriethoxysilane, 0.5 Part of γ-(2,3-glycidoxy) propyltrimethoxysilane mixture, 1 part of anilinomethyltriethoxysilane, vacuumed to -0.09MPa, stirred for 50 minutes and discharged, Packaged in a 300ml HDPE tube.

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Abstract

The invention relates to the technical field of rubber preparation, in particular to matte single-component room temperature vulcanized silicone rubber and a preparation method of the room temperaturevulcanized silicone rubber. The preparation method of the matte single-component room temperature vulcanized silicone rubber comprises the steps of: step 1: feeding 30-70 parts of polydimethylsiloxane containing an active end group, 2-10 parts of plasticizer and 20-60 parts of filling into a kneader, performing heating and dehydration at vacuum for 2-4h to prepare a base material, and step 2: cooling and feeding the base material into a power mixer, adding 3-15 parts of cross-linking agent, 1-6 parts of catalyst, 0.3-3 parts of coupling agent and 0.5-3 parts of matte accelerator, performing vacuum stirring and discharging, and packaging a product in an HDPE (high-density polyethylene) pipe to form the matte single-component room temperature vulcanized silicone rubber, wherein the matte accelerator comprises vinyl and phenyl. The silicone rubber solves the technical problems that the existing matte single-component cured silicone rubber is relatively complicated in technology and unstable in storage, and a matte film is insecure.

Description

technical field [0001] The invention relates to the technical field of rubber preparation, in particular to a matte single-component room temperature vulcanized silicone rubber and a preparation method thereof. Background technique [0002] One-component room temperature vulcanized silicone rubber, because of its excellent adhesion and excellent aging resistance, is widely used in various industries such as electronics, electrical appliances, automobiles, solar energy, aviation, communications, and electric power. With the continuous change of aesthetics and the improvement of living standards, people's requirements for the appearance of products are becoming more and more diverse. Especially in the fields of automobiles, architectural decoration, etc., there are different requirements for the surface of the material, such as bright and matte, in order to match the overall effect of the product, for the one-component room temperature vulcanized silicone rubber used in its bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K13/02C08K5/544C08K5/5435C08K5/5425C08K3/26C08K3/22
CPCC08K2003/2241C08K2003/265C08K2201/011C08L83/04C08L2205/025C08K13/02C08K5/544C08K5/5435C08K5/5425C08K3/26C08K3/22
Inventor 刘金龙张必宏
Owner 佛山市天宝利硅工程科技有限公司
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