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Two-component environment-friendly organic silicon sealant

A silicone and sealant technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of short shelf life, slow deep curing, poor viscosity, etc., and achieve firm bonding, stable properties, and high viscosity. strong effect

Pending Publication Date: 2022-03-15
深圳市杰仕德自动化设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a two-component environmentally friendly silicone sealant, which solves the problems of slow deep-layer curing, short shelf life, poor viscosity, and susceptibility to temperature and humidity in the production and sizing process of existing sealant materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This implementation case provides a one-component room temperature vulcanizing silicone material. The selected siloxane polymers are hydroxyl-terminated methylphenyl polysiloxane with a viscosity of 5000mpa.s, and hydroxyl-terminated methylphenyl polysiloxane with a viscosity of 1000mpa.s. The mixture of methyl phenylpolysiloxane at the end, in parts by mass, its ratio is as follows:

[0034] Component A: 100 parts of siloxane polymer; 6 parts of methyl-terminated dimethylsiloxane polymer; 8 parts of hydrophobic fumed silica; 4 parts of silicon carbide; 6 parts of nano-zinc oxide; Butyl acetoacetate) complex 0.03 part;

[0035] Component B: 100 parts of polyalkoxy-terminated siloxane polymer; 8 parts of hydrophobic fumed silica; 4 parts of silicon carbide; 6 parts of nano-zinc oxide; 3 parts of tributanoximinosilane; 1 part of reactant of γ-aminopropyltriethoxysilane and γ-[(2,3)-epoxypropyl]propyldimethoxysilane;

[0036] This implementation provides the above-mentio...

Embodiment 2

[0040] This implementation case provides a two-component vulcanized silicone material. The selected siloxane polymer is hydroxyl-terminated dimethylpolysiloxane with an average viscosity of 1000--1500mpa.s. as follows:

[0041] Component A: 100 parts of hydroxyl-terminated dimethylpolysiloxane; 5-20 parts of MDT silicone oil (1000mpa.s); 3 parts of hydrophobic fumed silica; 45 parts of α-alumina; 20 parts of cerium oxide; 1 part of water;

[0042] Component B: 100 parts of polyalkoxy-terminated siloxane polymer; 7 parts of ethyl orthosilicate; γ-aminopropyltriethoxysilane and 3-(methacryloyloxy)propyl trimethyl 8 parts of the reaction product of oxysilane; 0.08 parts of the reaction product of ethyl orthosilicate and ethyl tin diacetate;

[0043] Note: A:B=10:10.

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Abstract

The invention discloses a two-component environment-friendly organic silicon sealant, and relates to the technical field of two-component organic silicon. The silicone rubber comprises a material A and a material B. The material A comprises, by mass, 100 parts of a siloxane polymer, 0-18 parts of a plasticizer, 1-50 parts of a high-temperature-resistant filler, 1-100 parts of a reinforcing filler, 0.001-6 parts of a catalyst and 0.1-5 parts of other auxiliary agents. The material B is prepared from the following components in parts by mass: 100 parts of polyalkoxy-terminated siloxane polymer, 1 to 50 parts of high-temperature-resistant filler, 1 to 100 parts of reinforcing filler, 0.5 to 12.5 parts of cross-linking agent and 0.1 to 2.8 parts of coupling agent. The silicon-containing raw materials of the component A and the component B are mixed according to a specific proportion, the internal catalytic reaction is carried out, so that the property of the finished rubber material is more stable, the viscosity is higher, meanwhile, the high-temperature-resistant filler and the cross-linking agent are added into the formula, the two components are combined more firmly, and the service life of the rubber material is prolonged. The influence of temperature and humidity changes on the properties of the sizing material can be effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of two-component silicone, in particular to a two-component environmental protection silicone sealant. Background technique [0002] Most of the silicon-containing adhesive and sealing materials on the existing market are based on one-component organic silicone sealants. There are some common problems, such as short shelf life, poor bonding, slow curing in deep layers, and are greatly affected by temperature and humidity. In order to solve the timeliness of the production of electronic appliances, the present invention has developed a two-component environmentally friendly silicone sealant, which is used to solve many problems such as slow curing in the deep layer and great influence of temperature and humidity in the production and sizing process. Contents of the invention [0003] The purpose of the present invention is to provide a two-component environment-friendly silicone sealant, which solves the p...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J11/04C09J11/06C09J11/08
CPCC09J183/04C09J11/04C09J11/06C09J11/08C08K2003/2296C08L2205/025C08L2312/08C08L83/04C08K3/36C08K3/34C08K3/22C08K5/5465
Inventor 刘明杰王琦
Owner 深圳市杰仕德自动化设备有限公司
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