水性氯化聚丙烯乳液的制备与性能研究  

Study on Preparation and Properties of Waterborne Chlorinated Polypropylene Emulsion

作　　者：杨世杰 陆颖舟[1] 罗睿轶 Yang Shijie;Lu Yingzhou;Luo Ruiyi(College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Ruiyide New Materials Co.,Ltd􀆯Jiujiang,Jiangxi 332207,China)

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]瑞易德新材料股份有限公司,江西九江332207

出　　处：《涂料工业》2023年第8期26-33,共8页Paint & Coatings Industry

摘　　要：以甲苯为溶剂,采用相反转法制备了水性氯化聚丙烯乳液。考察了10种阳离子表面活性剂和40种非离子表面活性剂制备阳离子型和非离子型水性乳液时的乳化效果。探讨了乳化温度、乳化时间、表面活性剂用量对乳液粒径及涂层附着力的影响规律,确定了乳液的最佳制备条件。对乳液的稳定性、粒径分布和涂层的硬度、耐溶剂性、接触角及表面能进行了表征。结果表明:最佳阳离子和非离子表面活性剂分别为十六烷基三甲基溴化铵(C16TAB)和辛基酚聚氧乙烯醚(OP-50)。在OP-50中添加3%聚醚改性硅氧烷(PMS)可有效提高乳液在聚丙烯(PP)表面的润湿性。2种乳液的最佳乳化温度为50~60℃,乳化时间为30~60 min,表面活性剂用量为7%~8%。在此条件下,乳液的粒径为762~808 nm,稳定性良好,多分散系数为0.185~0.194,所制涂层的附着力为1~0级,硬度为H,耐溶剂性良好,表面能均高于常用面漆,可满足应用要求。In this work,waterborne chlorinated polypropylene(CPP)emulsion was prepared by phase inversion method with chlorinated polypropylene and toluene as raw material and solvent.The emulsifying effects of ten kinds of cationic surfactants and 40 kinds of nonionic surfactants were investigated.The impacts of emulsifying temperature,emulsifying time,and surfactant dosage on the particle size of the emulsion and the adhesion of the coating were revealed,and the optimal preparation conditions of the emulsion were determined.The stability,particle size distribution of emulsion,hardness,solvent resistance,contact angle,and surface energy of coating were characterized.The results showed that the optimal cationic and nonionic surfactants were cetyl trimethyl ammonium bromide(C16TAB)and octylphenol polyoxyethylene ether(OP-50),respectively.The wettability of the emulsion could be improved by adding 3%polyether-modified siloxanes(PMS)in OP-50.The optimal emulsification temperature was 50-60℃,the emulsification time was 30-60 min,and the surfactant dosage was 7%-8%.Under these conditions,the particle size of the emulsion was 762-808 nm,the stability was good,the polydispersity coefficient was 0.185-0.194,the adhesion of the coating was 1-0 level,the hardness was H,and the surface energy was higher than that of the typical topcoat,met the application requirements.

关 键 词：氯化聚丙烯 水性乳液 相反转法 表面活性剂 

分 类 号：TQ637.81[化学工程—精细化工]