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以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)和丙烯腈(AN)为主要原料,γ-(甲基丙烯酰氧基)丙基三甲氧基硅烷(KH-570)为改性剂,采用半连续种子乳液二阶段聚合法制备出一种核/壳结构型硅丙乳液。研究结果表明:KH-570含量对胶膜吸水率影响较小;胶膜力学性能及其保持率随KH-570含量增加而增大;当w(KH-570)=5%(相对于单体总质量而言)时,乳液及其胶膜的综合性能相对最好,其吸水率、拉伸强度和断裂伸长率分别为6.92%、13.37 MPa和43.98%,吸水48 h后拉伸强度和断裂伸长率分别为12.01 MPa和40.02%,吸水48 h后拉伸强度和断裂伸长率的保持率分别为89.83%和91.41%。
Γ-methacryloyloxy propyltrimethoxysilane (KH-570) was modified by methyl methacrylate (MMA), butyl acrylate (BA) and acrylonitrile Agent, using a two-stage semi-continuous seed emulsion polymerization to prepare a core / shell structure type silicone emulsion. The results showed that the content of KH-570 had little effect on the water absorption of the film; the mechanical properties and retention of the film increased with the increase of KH-570 content; when K (KH-570) = 5% Total mass), the overall performance of the emulsion and its film is relatively the best, the water absorption, tensile strength and elongation at break of 6.92%, 13.37 MPa and 43.98%, respectively, the tensile strength and The elongation at break was 12.01 MPa and 40.02%, respectively. The retention of tensile strength and elongation at break after 48 h of water absorption were 89.83% and 91.41%, respectively.