Condensed type double-component RTV pouring sealant for solar module
2013
The invention relates to a condensed type double-component RTV (Room Temperature Vulcanized) pouring sealant for a solar module. The condensed type double-component RTV (Room Temperature Vulcanized) pouring sealant comprises a component A and a component B. The component A comprises 20-60 parts of alpha,omega-dihydroxyl polydimethylsiloxane, 20-60 parts of filler, 1-10 parts of plasticizer, 1-10 parts of matrix and 1-10 parts of pigment, wherein the matrix is obtained by mixing alpha,omega-dihydroxyl polydimethylsiloxane, fumed silica, precipitated silica and zinc oxide together proportionally in a ratio of 100: 5: 5: 5, 100: 10: 5: 5, 100: 5: 10: 5 or 100: 10: 10: 5; and a component B comprises 5-10 parts of cross-linking agent, 1-5 parts of vulcanization accelerator, 1-5 parts of additive and 0.05-1 part of catalyst; 100 parts of component A and 8-20 parts of component B are mixed evenly to obtain a mixture; and then the mixture can be poured into the solar module. The condensed type double-component RTV pouring sealant has the advantages that curing speed is uniform, mechanical automatic gluing is facilitated, the cured product has good caking property to a substrate and does not recover in an airtight environment, good fire resistance is achieved; and the condensed type double-component RTV pouring sealant for the solar module is prepared simply and quickly, has good controllability and is suitable for flow line production and favorable for popularization utilization and expanded production.
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