改性纳米SiO_2/环氧树脂涂料的制备及其性能  

Preparation and Anticorrosion Performance Evaluation of Modified Nanosilica/Epoxy Resin Composite Paint and Coating

作　　者：刘元伟[1] 谢彦[1] 杨仲年[1] 

机构地区：[1]滨州学院化学与化工系,山东滨州256603

出　　处：《材料保护》2014年第7期21-23,7,共3页Materials Protection

基　　金：山东省中青年优秀科学家奖励基金(2008BS04030);滨州学院科研基金(BZXYG1315;BZXYSYXM201309);滨州市科技发展计划项目(2013ZC0702)资助

摘　　要：为提高纳米SiO2在环氧树脂中的分散程度,充分发挥纳米SiO2的力学性能和耐热性,采用乙烯基三乙氧基硅烷与丙烯酸对纳米SiO2表面进行接枝改性,利用红外光谱对改性纳米SiO2的结构进行了表征;将改性纳米SiO2添加到环氧树脂中混合固化,得到改性纳米SiO2/环氧树脂复合涂料(SAE),并通过附着力、吸水率、电化学试验等方法对SAE涂层的耐蚀性能进行了评价。结果表明:改性后的纳米SiO2出现新的吸收峰;SAE具有附着力高、抗渗透性强、极化电流小等优良的耐腐蚀性能。Vinyltricthoxysilane and acrylic acid were grafted onto the surface of nanosilica.The chemical structure of the modified nano-SiO_2was characterized by Fourier transform infrared spectrometry.Asobtained modified nano- SiO_2 was mixed with epoxy resin and cured generating modified nano-SiO_2/epoxy resin composite paint(SAE) and coating.The anticorrosion behavior of as-obtained composite coating was evaluated with the measurements of adhesion force and water absorption rate as well as electrochemical testing.Results indicated that modified nano- SiO_2 showed new infrared absorption peaks,while as-prepared SAE coating exhibited a large adhesion force,a strong resistance against permeation,and a small polarization current as well as excellent anticorrosion behavior.

关 键 词：复合涂层 环氧树脂 丙烯酸 改性纳米SiO2 结构 耐腐蚀性能 

分 类 号：TQ630.7[化学工程—精细化工]