IPN型含氟聚硅氧烷/PP疏水材料的制备及性能  

Preparation and properties of interpenetrating network fluoropolysiloxane/polypropylene hydrophobic materials

作　　者：金竹 邹守顺 周昌林 汪磊 JIN Zhu;ZOU Shoushun;ZHOU Changlin;WANG Lei(Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials,College of Materials and Chemical Engineering,China Three Gorges University,Yichang 443002,Hubei,China;Hubei Three Gorges Laboratory,Yichang 443007,Hubei,China;Hubei Junbang New Material Technology Co.,Ltd.,Yichang 443700,Hubei,China)

机构地区：[1]三峡大学无机非金属晶态与能源转换材料湖北省重点实验室,材料与化工学院,湖北宜昌443002 [2]湖北三峡实验室,湖北宜昌443007 [3]湖北君邦新材料科技有限公司,湖北宜昌443700

出　　处：《精细化工》2022年第4期712-718,共7页Fine Chemicals

基　　金：磷资源开发利用教育部工程研究中心开放基金(LKF201906);湖北省111引智计划(2018-19-1)。

摘　　要：以1,3,5-三甲基-1,3,5(3,3,3-三氟丙基)环三硅氧烷(D_(3)F)、八甲基环四硅氧烷(D_(4))、四甲基四乙烯基环四硅氧烷(D_(4)Vi)为功能单体,在碱胶催化下制备了乙烯基封端含氟聚硅氧烷(FSI),再以注塑级聚丙烯(PP)为基体树脂,以全氟己基乙烯(TE-6)为二次疏水改性剂,三羟甲基丙烷三丙烯酸酯(TMPTA)为交联剂、马来酸酐接枝PP(MAH-g-PP)为增容剂,高温熔融聚合形成互穿网络结构(IPN)FSI/PP复合疏水材料。采用FTIR对复合材料结构进行了表征;利用拉力试验机、接触角测量仪、SEM、AFM和TG-DSC对复合材料的综合性能及表面形貌进行了测试。结果表明,当D_(4)Vi用量为FSI总质量的0.05%,TE-6添加量为FSI/PP总质量的5%,MAH-g-PP用量为FSI/PP总质量的6%,TMPTA添加量为FSI/PP总质量的3%时,改性后FSI/PP疏水接触角达到138.3°,疏油接触角达到46.1°,相比于纯PP分别提高55.56%、157.54%。Vinyl-terminated fluoropolysiloxane (FSI) was prepared from 1,3,5-trimethyl-1,3,5 (3,3,3-trifluoroethyl)cyclotrisiloxane (D_(3)F), octamethylcyclotetrasiloxane (D_(4)) and tetramethyltetravinyl cyclotetrasiloxane (D_(4)Vi) in the presence of alkali glue. A series of interpenetrating network (IPN) FSI/PP composite hydrophobic materials were formed by high temperature melt polymerization using plastic grade polypropylene (PP),perfluorohexylethylene (TE-6), trimethylolpropane triacrylate (TMPTA) and maleic anhydride grafted PP(MAH-g-PP) as matrix resin, secondary hydrophobic modifier, crosslinking agent and compatibilizer,respectively. The structure of the composites was characterized by FTIR. The comprehensive properties and surface morphology of the composites were tested by tensile testing machine, contact angle measuring instrument, SEM, AFM and TG-DSC. The results showed that when D_(4)Vi dosage was 0.05% of the total FSI mass, TE-6 dosage was 5% of the total FSI/PP mass, MAH-g-PP dosage was 6% of the total FSI/PP mass,and TMPTA dosage was 3% of the total FSI/PP mass, the hydrophobic contact angle of FSI/PP reached 138.3°and oleophobic contact angle reached 46.1°, 55.56% and 157.54% higher than those of pure PP, respectively.

关 键 词：互穿网络 含氟聚硅氧烷 聚丙烯 熔融聚合 疏水性 功能材料 

分 类 号：TQ324[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]