硅丙乳液的合成工艺研究  

The synthesis process of silicon a crylic-acid emulsion

作　　者：裴世红[1] 秦栋 庄超[1] 王丽丽[1] 陶洋[1] 

机构地区：[1]沈阳化工大学,辽宁沈阳110142 [2]中化二建集团有限公司,山西太原030021

出　　处：《化学研究与应用》2011年第10期1413-1417,共5页Chemical Research and Application

基　　金：辽宁省教育厅创新团队基金项目(LT2010086)

摘　　要：采用半连续种子乳液聚合工艺,以乙烯基三乙氧基硅烷(VTS)为改性剂、十二烷基硫酸钠(SDS)和烷基酚聚氧乙烯醚(OP-1O)为复合乳化体系,在引发剂过硫酸铵(APS)的作用下合成稳定的硅丙乳液。利用红外光谱(FTIR)和扫描电镜(SEM)对涂膜进行了表征。结果表明:单体转化率随乳化剂用量、引发剂用量、有机硅用量、聚合温度和硬软单体配比的增加均为先增大后减小;当乳化剂质量分数占单体总量的3%,引发剂用量为ω=0.6%(占单体总量),软硬单体配比为m(BA)∶m(MMA)=45∶52,有机硅用量ω=8%(占单体总量),聚合温度为80℃时,制备的硅丙乳液单体转化率最高,稳定性最好,具有较好的综合性能。A silicone acrylate emulsion is prepared by semicontinuous emulsion polymerization techniques,and take vinyl triethoxy silane（VES）as modifier,sodium dodecyl sulfate（SDS）and alkylphenol ethoxylates（OP-10）as emulsification system and ammonium persulfate as initiator.The coated membrane is analyzed by infrared spectroscopy（FTIR）and scanning electron microscopy（SEM）.The results shows that the monomer conversion fisrtly increases and then decreases when the amount of emulsifier,initiator,silicone,the temperature and the ratio of hard and soft monomers all increases.when emulsifier is 3%,initiator is 0.6%,ratio of acrylate is 45∶52,the organic silicon is 8%,and the temperature is 80℃,the monomer conversion of the organic silicon-acrylate elastic latex is the highest,and the stability is the best.The product has the better comprehensive properties.

关 键 词：种子乳液聚合 有机硅 丙烯酸酯 FTIR 

分 类 号：O632.12[理学—高分子化学]