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Addition-type silicon rubber primer and preparation method thereof

A technology of primer and silicone rubber, applied in the direction of coating, etc., can solve the problems of poor bonding effect and achieve good bonding effect and good application prospects

Active Publication Date: 2016-04-20
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention solves the technical problem that the silicone rubber primer has poor bonding effect on relatively difficult-to-bond plastics such as PC and PMMA in the prior art

Method used

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  • Addition-type silicon rubber primer and preparation method thereof
  • Addition-type silicon rubber primer and preparation method thereof
  • Addition-type silicon rubber primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In a 150mL three-necked flask equipped with a reflux condenser, a stirrer and a thermometer, under N 2 Under protection, add 63.5g butyl acetate solvent, 6gKH-570 silane coupling agent, 30g methyl methacrylate (that is, the molar ratio of acrylic acid monomer to silane coupling agent containing C=C group is 9.4:1 ), 0.7g initiator Luperox270, started to stir slowly for 10min, and slowly raised the temperature to 90°C, and kept the temperature for 2h to obtain the silicone-acrylic acid oligomer A1 of this example.

Embodiment 2

[0051] In a 150mL three-necked flask equipped with a reflux condenser, a stirrer and a thermometer, under N 2 Under protection, add 63g of ethyl acetate solvent, 3g of KH-570 silane coupling agent, 34g of methyl methacrylate (that is, the molar ratio of acrylic acid monomer to silane coupling agent containing C=C group is 15:1) , 0.7g initiator Luperox270, started to stir slowly for 10 minutes, and slowly raised the temperature to 80° C., and kept it warm for 3 hours to obtain the silicone-acrylic acid oligomer A2 of this example.

Embodiment 3

[0053] In a 150mL three-necked flask equipped with a reflux condenser, a stirrer and a thermometer, under N 2 Under protection, add 63g ethyl acetate solvent, 4gA171 silane coupling agent, 38g butyl methacrylate (that is, the molar ratio of acrylic acid monomer to silane coupling agent containing C=C group is 15:1), 0.7 g initiator Luperox270, started to stir slowly for 10 minutes, and slowly raised the temperature to 80° C., and kept the temperature for 2 hours to obtain the silicone-acrylic acid oligomer A3 of this example.

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Abstract

The invention provides an addition-type silicon rubber primer and a preparation method thereof. The primer includes the following components, by weight, 100 parts of a solvent, 0.5-10 parts of an organic silicon-acrylic oligomer and 10-30 parts of silica sol. The organic silicon-acrylic acid oligomer is formed by polymerizing a silane coupling agent containing C=C groups and an acrylic monomer. The silica sol is prepared through acidic hydrolysis to silicate ester, a silane coupling agent containing C=C groups, and hydrogen-containing siloxane. Through combination of the silica sol containing an additional reaction functional group and the functionalized organic silicon-acrylic oligomer, the primer promotes chemical combination between addition-type silicon rubber and surfaces of materials, thereby achieving good adhesive effect. The primer has excellent application prospect in the field of heat vulcanization adhesion of the addition-type silicon rubber.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber, in particular to a primer for addition-type silicone rubber and a preparation method thereof. Background technique [0002] In the field of thermal vulcanization bonding of addition-type silicone rubber and substrates, a corresponding silicone primer is used before rubber molding, which can be used to improve the adhesion of silicone rubber to different substrates. The most widely used primers are silicone, acrylic resin, epoxy resin, and their mixtures as film-forming agents. Among them, silicone-based primers have good compatibility and binding force with silicone rubber, and have become the most widely used mainstream products. [0003] CN93112608.8 "A Surface Adhesive Treatment Agent for Silicone Adhesive" discloses a silicone-based surface adhesion treatment agent, which contains titanate, silicone resin, organic silicate, and organic solvent. It can improve the bonding ability of ...

Claims

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Application Information

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IPC IPC(8): C09D133/12C09D133/10C09D133/08C09D7/12C08J5/12
Inventor 冷世伟胡文李海滨林宏业
Owner BYD CO LTD
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