甲基硅油对有机硅防污涂层表界面特性的影响  

Influence of Methyl Silicone Oil on Surface and Interfacial Properties of Silicone Antifouling Coatings

作　　者：巴淼 张占平[1] 齐育红[1] 

机构地区：[1]大连海事大学船机修造工程实验室,辽宁大连116026

出　　处：《材料工程》2015年第4期59-65,共7页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目(51079011;51179018);交通运输部应用基础研究资助项目(2013329225330);总装预研基金资助项目(JZ12-58);大连海事大学船机修造工程交通行业重点实验室开放课题资助项目(CJXZ201304);中央高校基本科研业务费之大连海事大学优秀科技创新团队培育计划资助项目(3132014323)

摘　　要：以羟基封端的聚二甲基硅氧烷为主要成膜物,添加不同分子量和添加量的甲基硅油制备有机硅防污涂料。结果表明:甲基硅油的分子量越小、添加量越大,涂层的水接触角和二碘甲烷接触角越大,表面自由能越小;涂层的弹性模量随硅油分子量的减小而降低,在A组分中,硅油添加量占13%(质量分数,下同)时,弹性模量最小;附着生物的相对结合力随着硅油分子量的增加而增大,随着硅油含量的增加而降低;海水浸泡期间,硅油中的甲基与水分子发生氢键作用,从而使得甲基的峰位变宽,涂层的疏水性降低;所有涂层在空气中静置一年,只有添加分子量为1750甲基硅油的未浸泡海水涂层表面观测到硅油的渗出,且硅油渗出量与添加量成正比。The silicone antifouling,coating with hydroxy-terminated polydimethylsiloxane as main film,and with the addition of methyl silicone oil with different molecular weight and different content,was prepared.The results show that water contact angles and diiodomethane contact angles become larger,while surface free energy becomes smaller with decreasing the molecular weight and increasing the content of silicone oil;the elastic modulus of coating becomes lower with reducing the molecular weight and the elastic modulus reaches the mininum while the content of methyl silicone oil is 13%（mass fraction）in part A.The relative adhesion force of biofouling increases with the increasing of molecular weight and reduces with the increasing of content of silicone oil;during the process of coatings immersing in seawater,the—CH3in silicone oil can take hydrogen bonding effect with H2 O molecular,thus results in the range of methyl peak becomes lager in FTIR spectra,and the hydrophobicity of silicone coatings decreases;all coatings are allowed to stand in air for one year,only the non-immersion silicone coating with the addition of methyl silicone oil of 1750 molecular weight are found the exudation of silicone oil and the amount of exudation is proportional to the amount of the addition.

关 键 词：有机硅 甲基硅油 涂层 性能 浸泡 

分 类 号：O484.4[理学—固体物理] TB383[理学—物理]