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A kind of room temperature vulcanized silicone rubber and its preparation method and application

A technology of room temperature vulcanization and silicone rubber, which is applied in adhesives, non-polymer adhesive additives, adhesive additives, etc., and can solve problems such as performance degradation and volume reduction

Active Publication Date: 2022-03-25
运研材料科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, with the continuous development of the solar module industry and the increasingly stringent cost control of raw materials, the cost of the original silicone rubber used for solar module frames has dropped again and again. Facing the pressure of new cost reductions, the original cost reduction technology route It is achieved by increasing the filler as much as possible, but if the density of the filler is too large, the unit volume will decrease and the performance will decrease.

Method used

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  • A kind of room temperature vulcanized silicone rubber and its preparation method and application
  • A kind of room temperature vulcanized silicone rubber and its preparation method and application
  • A kind of room temperature vulcanized silicone rubber and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] In parts by weight, 100 parts of α, ω-dihydroxy polydimethylsiloxane with a viscosity of 20,000 mPa.S, 150 parts of nano-calcium (particle size of 60 nm), and 30 parts of YYDE-20 expanded foaming powder were prepared. The obtained expanded expanded microspheres and 5 parts of 100 mPa.S methyl silicone oil were dehydrated under vacuum stirring at 100-120° C. for 3 hours, and then cooled to room temperature as a base material for later use. Add 10 parts of methyltrimethoxysilane to the base material just prepared and stir in vacuum for 40min, then add 7 parts of 3-aminopropyltriethoxysilane and 1 part of dibutyltin diacetate organotin catalyst and stir in vacuum for 30min. Shut down the material, and seal it for storage.

[0053] The density of the prepared silicone rubber is 1.1 g / cm 3 , The tensile strength retention rate of the adhesive strip cured for 7 days is 90% after double 85, 1000h wet heat aging performance test.

Embodiment 2

[0055] In parts by weight, 100 parts of α, ω-dihydroxy polydimethylsiloxane with a viscosity of 20,000 mPa.S, 180 parts of nano-calcium, and 23 parts of YYDE-40 expanded foamed powder The expanded microspheres and 10 parts of 100 mPa.S methyl silicone oil were dehydrated under vacuum stirring at 100-120° C. for 3 hours, and then cooled to room temperature as a base material for later use. After adding 13 parts of tetramethoxysilane to the base material just prepared and stirring under vacuum for 40 minutes, then add 12 parts of 3-aminopropyltriethoxysilane, 7 parts, 1.2 parts of dibutyltin dilaurate organotin catalyst (vacuum stirring) After 30 minutes, stop the machine to discharge the material, and seal it for storage.

[0056] The density of the prepared silicone rubber is 1.23 g / cm 3 , The tensile strength retention rate of the adhesive tape cured for 7 days is 85% after double 85, 1000h wet heat aging performance test.

Embodiment 3

[0058] In parts by weight, 100 parts of α, ω-dihydroxy polydimethylsiloxane with a viscosity of 5000 mPa.S, 100 parts of nano-calcium, and 20 parts of foamed foam made from YYDE-80 expanded foaming powder The expanded microspheres and 10 parts of 100 mPa.S methyl silicone oil were dehydrated under vacuum stirring at 100-120° C. for 3 hours, and then cooled to room temperature as a base material for later use. Add 15 parts of tetramethoxysilane to the base material just prepared and stir in vacuum for 40 minutes, then add 13 parts of N-(β-aminoethyl)-3-aminopropylmethyldimethoxysilane, dilauric acid After 1.2 parts of dibutyltin organotin catalyst was stirred in vacuum for 30 minutes, the machine was stopped to discharge the material, and sealed and stored.

[0059] The density of the prepared silicone rubber is 1.03g / cm 3 , The tensile strength retention rate of the adhesive strip cured for 7 days is 82% after double 85, 1000h wet heat aging performance test.

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Abstract

The invention discloses a room temperature vulcanized silicone rubber and its preparation method and application. The silicone rubber comprises the following components by weight: 100 parts of α, ω-dihydroxy polydimethylsiloxane, 100 parts of methyl silicone oil ~10 parts, 1~20 parts of crosslinking agent, 1~15 parts of coupling agent, 20~200 parts of nano calcium, 5~50 parts of expansion foaming powder, 1~5 parts of organotin catalyst. The preparation method of the warm vulcanized silicone rubber of the present invention is simple and low in cost, and the retention rate of the tensile strength is 82-90% after being cured for 7 days through double 85, 1000h damp heat aging performance test, and can be used for sealing the frame of the solar battery module.

Description

technical field [0001] The present invention relates to a kind of silicone rubber, more particularly to a new room temperature vulcanized silicone rubber and its preparation method and application. Background technique [0002] Silicone rubber refers to the rubber whose main chain is alternately composed of silicon and oxygen atoms, and there are usually two organic groups connected to the silicon atom. Excellent performance. [0003] The solar cell module is composed of high-efficiency monocrystalline / polycrystalline solar cells, low-iron ultra-white suede tempered glass, packaging materials (EVA, POE, etc.), functional backplane, interconnection bars, bus bars, junction boxes and aluminum alloy frames. . The service life can reach 15 to 25 years. At present, silica gel is mainly used as sealant in the frame of new energy solar modules. The main components of mainstream silica gel sealant products are α, ω-dihydroxypolydimethylsiloxane as the base resin and ketoxime sila...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/04C09J11/04C09J11/06C08J9/32
CPCC09J183/04C09J11/04C09J11/06C08J9/32C08L2203/204C08L2203/206C08L2205/025C08K2201/011C08K2201/003C08K2003/265C08J2203/22C08J2383/04C08J2483/04C08L83/04C08K3/26C08K5/544
Inventor 潘仕荣周小三
Owner 运研材料科技(上海)有限公司