Bi-component room temperature vulcanizing silicone rubber for photovoltaic component
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A technology of room temperature vulcanization and photovoltaic modules, applied in the field of silicone rubber, can solve the problems of slow curing speed, affecting efficiency, poor aging resistance, etc., achieve fast curing speed, good bonding performance, and improve high temperature resistance and damp heat aging resistance Effect
Inactive Publication Date: 2010-06-02
YANTAI DARBOND TECH
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[0007] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a two-component room temperature vulcanized silicone rubber for photovoltaic modules, which mainly solves the problem of poor aging resistance and poor curing of the existing room temperature vulcanized silicone rubber used as a photovoltaic module sealant. Slow speed, affecting efficiency and other issues
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Embodiment 1
[0019] Example 1: A component: Weigh 200g of 20000mPa.s hydroxyl-terminated polydimethylsiloxane, 80g of 1000mPa.s dimethyl silicone oil, 160g of nano-calcium carbonate, 20g of R202 white carbon black, after premixing, Blend 3 times through a three-roll mill;
[0020] Component B: 0.2g of bismuth triheptanoate, 0.2g of bis(acetylacetonate)diisopropoxytitanium, 2g of hydroxyl silicone oil, mixed for 15min under nitrogen protection, added 16g of ethyl orthosilicate, γ-aminopropyltri Ethoxysilane 3g, mixed for 10min under nitrogen protection.
Embodiment 2
[0021] Example 2, component A: Weigh 200g of 20000mPa.s hydroxyl-terminated polydimethylsiloxane, 80g of 1000mPa.s dimethyl silicone oil, 160g of nano-calcium carbonate, and 20g of R202 white carbon black. After premixing, Blend 3 times through a three-roll mill;
[0022] Component B: 2g of bismuth triheptanoate, 1g of bis(acetylacetonate)diisopropoxytitanium, 1g of hydroxyl silicone oil, mixed for 15min under nitrogen protection, added 16g of ethyl orthosilicate, γ-aminopropyltriethoxy base silane 3g, mixed for 10min under nitrogen protection.
Embodiment 3
[0023] Example 3, component A: Weigh 200g of 20000mPa.s hydroxyl-terminated polydimethylsiloxane, 80g of 1000mPa.s dimethyl silicone oil, 160g of nano-calcium carbonate, and 20g of R202 white carbon black. After premixing, Blend 3 times through a three-roll mill;
[0024] Component B: 1 g of bismuth triheptanoate, 0.5 g of bis(acetylacetonate) diisopropoxy titanium, 3 g of hydroxyl silicone oil, mixed for 15 minutes under nitrogen protection, added 16 g of ethyl orthosilicate, γ-aminopropyl triethyl 3 g of oxysilane, mixed for 10 min under nitrogen protection.
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Abstract
The invention discloses a bi-component room temperature vulcanizing silicone rubber for a photovoltaic component, which comprises an A component and a B component. During use, the A component and the B component are uniformly coated on a work piece according to proportion through a bi-component glue spreader. The bi-component room temperature vulcanizing silicone rubber is characterized in that: the A component is prepared by grinding the following raw materials in part by weight: 100 parts of hydroxyl-terminated dimethyl silicone polymer, 20 to 50 parts of plasticizer, 60 to 100 parts of stuffing and 6 to 10 parts of thixotropic agent through a three-roll grinder; the B component is prepared by mixing the following raw materials in part by weight: 5 to 10 parts of cross-linking agent, 0.2 to 1.5 parts of compound catalyst, 1 to 2 parts of adhesion agent and 0.5 to 1.5 parts of catalyst carrier under the protection of nitrogen. The invention overcomes the shortcomings of poor aging resistance of the room temperature vulcanizing silicone rubber catalyzed by conventional organotin, and has characteristics of excellent outdoor aging resistance, good adhesiveness, fast curing speed, no reversion after the curing and no color change; the invention greatly improves the high temperature resistance and the damp-heat aging resistance, and can meet the requirement on the process procedure by controlling the curing speed.
Description
Technical field: [0001] The invention relates to the technical field of silicone rubber, specifically a two-component room temperature vulcanized silicone rubber, which has excellent outdoor aging resistance, good bonding performance, fast curing speed, and does not return to its original state after curing, and does not change color. Especially suitable for photovoltaic module sealing. Background technique: [0002] Today, with the rapid development of industrial electronic technology, energy issues and environmental issues are becoming increasingly severe. Green energy has become a global development trend. In the 1990s, the world began to pay attention to solar power generation, and the United States, Japan, and Europe took the lead in using it. At the beginning of this century, photovoltaic power generation began to take shape, doubling every year. [0003] At the heart of photovoltaic power generation is the silicon wafer. Since silicon wafers are fragile, they need...
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