The effects of the content of silane modified polyurethane,catalyst,silane coupling agent and weather resistant additive on the properties of two-component silane modified polyurethane sealant for hollow glasses are studied.The results show that when the content of silane modified polyurethane in component A is 20%,the content of catalyst dibutyltin dilaurate is 0.09%,and the content of silane coupling agent KH570 is 1.5%,the tensile strength and elongation of the sealant reached their optimum,and the bonding failure to the hollow glass substrate is 100%cohesive failure.In addition,adding 2,2-dihydroxy methylbutanol and phenyl salicylate can effectively improve the weather resistance of the sealant.
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