氟硅改性丙烯酸酯无皂乳液的制备及性能  

Preparation and Performances of Fluorosilicon-Modified Acrylate Soap-Free Emulsion

作　　者：白小慧[1] 沈一丁[1] 李培枝[1] 杨晓武[1] 

机构地区：[1]教育部轻化工助剂化学与技术重点实验室,陕西科技大学,陕西西安710021

出　　处：《高分子材料科学与工程》2012年第8期18-21,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(50973057);陕西省13115重点工程项目(2009ZDKG-02);陕西省教育厅专项基金(2010JK436);陕西科技大学科研启动基金(BJ11-10)

摘　　要：以纳米SiO2(Nano-SiO2)、γ-甲基丙烯酰氧乙基三甲氧基硅烷(KH570)、全氟烷基乙基丙烯酸酯(FM))等为主要原料,通过KH570改性纳米SiO2后,与FM等乙烯基单体共聚,制得了既含氟又含硅的丙烯酸酯有机/无机杂化无皂乳液。通过FT-IR、AFM及接触角测量等手段研究了共聚物的结构及性能。结果表明,氟硅单体均参与了共聚反应;乳胶膜耐热稳定性及残炭率均得以提高;加入SiO2后,涂膜凸起峰的高度和致密程度提高;当w(FM)=30%,w(SiO2)=0.5%时,涂膜对水及液体石蜡的接触角分别为125°及110°;激光粒度分布仪(DLS)分析表明,乳液平均粒径为98.37 nm。The organic/inorganic hybrid fluorosilicon-modified copolymer acrylate emulsion was prepared via soap-free emulsion copolymerization of SiO2 modified by γ-methacryloxypropyl trimethoxy silane（KH570）,perfluorinated alkyl ethyl acrylate（FM） and other vinyl agents.The structures and properties of the copolymer were characterized by FT-IR,AFM and contact angle（CA）,etc.The results show that the fluorinated and siloxane monomers have participated in the reaction;the heat stability and char yield of the film are improved;the roughness and density of the latex particles increase by SiO2 addition;the contact angles of water and liquid paraffin on the copolymer films are 125° and 110° when w（FM） is 30%,w（SiO2） is 0.5%;the laser particle size distribution device analysis shows the average particle size is about 98.37nm.

关 键 词：氟硅改性丙烯酸酯 纳米复合粒子 防水剂 无皂乳液共聚 

分 类 号：TQ314.2[化学工程—高聚物工业]