SiO_2溶胶不同掺杂方式对含氟聚丙烯酸酯/SiO_2杂化涂层性能的影响  

Effects of Different Silica Sol Doping Methods on the Properties of Fluoro-acrylate Polymer/SiO_2 Hybrid Coatings

作　　者：钱斯文[1] 王建方[1] 吴文健[1] 刘长利[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2008年第2期22-27,71,共7页Journal of National University of Defense Technology

基　　金：国家部委资助项目

摘　　要：用酸催化溶胶-凝胶法制得SiO2溶胶,分别采用共混法和原位聚合法制备含氟聚丙烯酸酯/SiO2纳米杂化涂层。利用红外光谱、扫描电镜等表征了杂化涂层的结构、形态及SiO2相的分散性;研究了SiO2含量、分布和界面状况等与杂化涂层的表面性能和力学性能的关联与影响。结果表明,SiO2在两种方法制备的杂化涂层中均以Si-O网络的形式存在,原位聚合法中SiO2相的分散性优于共混法;含氟聚丙烯酸酯涂层中引入SiO2相后,涂层性能明显提高,共混法的疏水性优于原位聚合法;二者的力学性能随SiO2相含量变化的趋势相同,原位聚合法略优于共混法。Silica sols were synthesized by an acid-catalyzed sol-gel process and fluoro-acrylate polymer/SiO2 hybrid materials were prepared by the in-situ polymerization and blending method.The structure,morphologies of the hybrid coating and the dispersion of SiO2 in coatings were characterized by FT-IR and SEM.The effects of content,distribution and interfacial conditions of inorganic disperse phase on the surface and mechanical properties of hybrid coatings were investigated.It was found that in the hybrid coating...

关 键 词：含氟聚丙烯酸酯 溶胶-凝胶 SiO2网络 纳米杂化材料 性能 

分 类 号：TB304[一般工业技术—材料科学与工程]