摘要： 以苯乙烯、丙烯酸丁酯、丙烯酸、甲基丙烯酸羟乙酯、N-羟甲基丙烯酰胺(N-MA)、双丙酮丙烯酰胺(DAAM)及有机硅单体为主要原料,过硫酸铵(APS)为引发剂,采用预乳化工艺和半连续种子乳液聚合法制备自交联改性苯丙乳液。考察了交联单体用量、交联单体配比、有机硅单体用量、引发剂用量以及聚合温度等因素对乳液性能的影响。研究结果表明:当交联单体用量为单体总量的5%,m(DAAM)∶m(N-MA)=3∶2,有机硅加入量为0.5%～1.0%,引发剂用量为单体用量的0.4%,聚合温度为83～87℃时,所得乳液的综合性能优良。

关键词: 木器漆, 苯丙乳液, 乳液聚合, N-羟甲基丙烯酰胺, 双丙酮丙烯酰胺, 有机硅

Abstract: Using styrene, butyl acrylate, acrylic acid HEMA, N-MA DAAM and siloxane monomer as raw materials,(APS)as initiator to prepare the title self-crosslinking modified styrene-acrylate emulsion through pre-emulsification technology and semi-continuous seed emulsion polymerization process.The influences of the amount and percentage of crosslinking monomers, amount of siloxane monomer, and amount of initiator and temperature on the emulsion performance were discussed. The results showed that the better comprehensive performance of emulsion could be obtained when the amount of crosslinking monomer was 5%, m( DAAM): m(N-MA)=3: 2, amount of siloxane monomer between 0. 5% to 1. 0% initiator 0. 4% and polymerization temperature between 83-87 °C.

Key words: wood paints, styrene-acrylate emulsion, emulsion polymerization, N-MA, DAAM, siloxane