工艺技术
第43卷第9期 2013年9月
涂料工业
PAINT & COATINCS INDUSTRY
Vol.43No.9 Sep.2013
纳米TiO，分散液/环氧涂料的制备及性能研究何小玉，陈砺，严宗诚，程丽华（1.华南理工大学化学与化工学院，广州510640；
2.广东石油化工学院化工与环境工程学院，广东茂名525000）
摘要：纳米TIO，在有机介质中存在不易分散、贮存稳定性差和易发生二次团聚等问题，环氧树脂存在韧性差、耐冲击性欠佳、易开裂、固化后性脆等缺点，针对这些间题研究了一种制备纳米TiO，分散液的方法，并对环氧树脂进行端般基丁睛橡胶改性，制成无溶剂环氧防腐涂料。傅里叶变换红外光谱（FI-IR）测试、动态光散射（DLS）、涂层断面扫描电镜（SEM）和电化学性能测试（EIS）的结果表明：纳米粒子能得到有效改性，且分散液粒径均勾、稳定，不易发生二次团聚；适量分散液能改善材料自身存在孔洞和裂痕的缺陷，与材料结合性好，整体上提高了涂层的基础物理性能和防腐效果。
关键词：纳米TiO,：分散液：环氧涂料；防腐
中图分类号：TQ630.7文献标识码：A
文章编号：0253-4312（2013)09-0036-06
Preparation and Properties of Nano-TiO,Dispersion/EpoxyCoatings
He Xiaoyu',Chen Li',Yan Zongcheng',Cheng Lihua
(1. College of Chemistry and Chemical Engineering, South China University of Technology,Guangzhou510640,China;2.College of Chemical and Engineering GuangdongUniersity of Petrochemical Technology,Maoming，Guangdong525000,China)
Abstract: Nano - TiO, is hard to be dispersed in organic medium, with lower storage sta-bility and easy to be re flocculated. Epoxy resin has poor toughness, poor impact resistance, easy cracking and very brittle after curing. To solve these problems mentioned above, a meth-od to prepare nano - TiO, dispersion was developed and epoxy resin was modified using nitrile rubber, formulating a solventless epoxy anticorrosion coating.The coating was characterized by use of Fourier transform infrared spectroscopy (FT -IR), dynamic light scattering (DLS) a-nalysis, scanning electron microscope (SEM)and electrochemical performance test (EIS). The results showed that nano -TiO, was modified effectively, leading a uniform and stable dis-persion that was not to be re flocculated. Proper amount of dispersion could improve the de-fects of holes and cracks,as well as the adhesion, enhancing the physical properties and corro-sionprotectiveperformance.
Key Words: nano -TiO,; dispersion; epoxy coating; corrosion protection
纳米TiO，作为一种新型无机功能材料.由于其具有防腐性能优异，抗垢性、耐油性、耐渗透性好等特
点引起了人们的重视]，但纳米TiO，在有机溶剂中的分散间题限制了其应用。环氧树脂类涂料具有附
【基金项目】广东省产学研项目（2011B090400087）：广东省社会发展项目（2011A030600011） 36