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Epoxy resin modified two-component silicone rubber adhesive

A technology of epoxy resin and epoxy modification, which is applied in the direction of adhesives, non-polymer adhesive additives, adhesive additives, etc. It can solve the problem that the adhesion is not as good as that of one-component room temperature vulcanized silicone rubber, and the adhesion is poor. Problems such as slow deep curing speed, to achieve the effect of meeting the production cycle, good bonding effect, and excellent performance retention rate

Inactive Publication Date: 2012-06-20
TONSAN ADHESIVES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Room temperature vulcanized silicone rubber has become one of the fastest-growing varieties of new chemical materials in China in the past two decades due to its excellent weather resistance and temperature resistance and good operability; however, due to its own limited characteristics, the deep curing speed is relatively slow; At present, in the domestic one-component room temperature vulcanized silicone rubber market, even the silicone products with leading performance abroad have a curing speed of less than 5mm in 24 hours; this limits the further expansion of the application field of one-component room temperature vulcanized silicone rubber to a certain extent; Due to its excellent deep curing speed, two-component room temperature vulcanized silicone rubber has become a prominent rubber type in the domestic market; two-component room temperature vulcanized silicone rubber is composed of A component and B component, which determines the two-component room temperature vulcanization. Vulcanized silicone rubber can have a variety of A-component + B-component formula combinations; but pure two-component silicone rubber, due to its fast curing speed, is not as good as one-component room temperature vulcanized silicone rubber in terms of adhesion ; Especially where fast curing speed and high adhesion are required, while two-component silicone rubber has poor adhesion to plastic materials

Method used

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  • Epoxy resin modified two-component silicone rubber adhesive
  • Epoxy resin modified two-component silicone rubber adhesive
  • Epoxy resin modified two-component silicone rubber adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054]

[0055] The preparation method of epoxy-modified alkoxy coupling agent is as follows: 100 parts of epoxy resin E51, 200 parts of aminopropyltrimethoxysilane, under the catalysis of dibutyltin dilaurate, react at 70℃ 2 hours;

[0056] The mixing ratio of component A and component B is 4:1;

[0057] After the A component and the B component are evenly mixed, the operating time is more than 20 minutes, and the clearing time is less than 90 minutes; after fully cured, the tensile strength is greater than 3.5MPa, and the elongation at break is greater than 200%. The bonding strength can reach more than 2MPa; according to the aging conditions of the photovoltaic standard, the retention rate of tensile strength and bonding strength is more than 75% after being placed under the conditions of 85℃ and 85%RH for 1000 hours;

Embodiment 2

[0059]

[0060] The preparation method of epoxy-modified alkoxy coupling agent is as follows: 100 parts of bisphenol F epoxy resin (epoxy equivalent of 60~70), and 400 parts of N-β-aminoethyl-γ-aminopropyl Trimethoxysilane, under the catalysis of dibutyltin dilaurate, react at 70℃ for 2 hours;

[0061] The mixing ratio of component A and component B is 2:1;

[0062] After the A component and the B component are evenly mixed, the operating time is more than 30 minutes, and the clearing time is less than 120 minutes; after fully cured, the tensile strength is greater than 3.0MPa, and the elongation at break is greater than 350%. The bonding strength can reach more than 2MPa; according to the aging conditions of the photovoltaic standard, the retention rate of tensile strength and bonding strength is about 80% after being placed at 85°C and 85%RH for 1000 hours;

Embodiment 3

[0064]

[0065] The preparation method of epoxy-modified alkoxy coupling agent is as follows: 100 parts of bisphenol F epoxy resin (epoxy equivalent of 60~70), and 400 parts of N-β-aminoethyl-γ-aminopropyl Trimethoxysilane, under the catalysis of dibutyltin dilaurate, react at 70℃ for 2 hours;

[0066] The mixing ratio of component A and component B is 10:1;

[0067] After the A component and the B component are mixed uniformly, the operating time is more than 30 minutes, and the clearing time is less than 90 minutes. After fully cured, the tensile strength is greater than 3.0MPa, the elongation at break is greater than 300%, and the bonding strength to photovoltaic modules can reach more than 2MPa. According to the aging conditions of the photovoltaic standard, after standing for 1000 hours under the conditions of 85℃ and 85%RH, the retention rate of tensile strength and bonding strength is about 75%; the part of dibutyltin dilaurate is changed to 1.5, and The number of parts of...

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Abstract

The invention is an epoxy resin modified two-component silicone rubber adhesive which comprises an A component and a B component; the composition of the A component and the B component by weight are as follows: the A component comprises 100 parts of polydimethylsiloxane terminiated by hydroxyl, 0-500 parts of solid fillers, 0-50 parts of gas-phase method silica, and 0-5 parts of water; the B component comprises 50-100 parts of epoxy modified alkoxy silane, 0-100 parts of methyl silicone oil, 10-80 parts of cross-linking agents, 0-300 parts of solid fillers, 0-30 parts of gas-phase method silica, and 0.1-3 parts of catalysts. The adhesive of the invention combines the high bonding force of epoxy resin with the high-temperature and high weather resistance of silicone rubber; the curing speed meets the production rhythm of solar cell modules, and has very good bonding effect and an excellent performance conservation rate for the modules; in industries of household appliances, automobile, and the like, the advantage of satisfiability of rapid production rhythm is brought into play.

Description

Technical field [0001] The invention involves engineering adhesives, especially a silicon rubber adhesive of a dual -component of epoxy resin modification. The adhesive is used in automotive, home appliances, photovoltaic, and equipment maintenance. Background technique [0002] The room temperature sulfide silicon rubber has become one of the fastest -developed varieties of domestic chemicals in the past two decades with its excellent weather resistance and good operability; but due to its own characteristics, the deep curing speed is slow;At present, in the domestic single -component room temperature sulfide silicon rubber market, even if foreign performance is leading silicone products, its curing speed is less than 5mm of 24 hours; this limits the further expansion of a single -component room temperature sulfide rubber to a certain extent;Due to the excellent deep curing rate of silicon rubber in the dual component room, it has become a sudden glue species in the domestic mar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J183/04C09J11/06C09J11/04
Inventor 潘换明郑妙生李志梅苏丹王德波
Owner TONSAN ADHESIVES INC
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