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纳米TiO₂的改性及其在丙烯酸涂料中的应用

MODIFICATION OF NANO-TiO₂ AND ITS APPLICATION IN POLYACRYLATE COATING

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【Author】 CHEN Yun-hua~1,LIN An~1,GAN Fu-xing~(1,2) 1.College of Resource and Environmental Science of Wuhan University,Wuhan 430072;2.State Key Laboratory for Corrosion and Protection,Shenyang 110016

【机构】武汉大学资源与环境科学学院；武汉大学资源与环境科学学院武汉430079；武汉430079；金属腐蚀与防护国家重点实验室；沈阳110016；

【摘要】设计了一种改性纳米TiO2方法,先用带双键官能团的硅烷偶联剂WD-70和纳米TiO2反应后,在颗粒表面引入可聚合官能团,然后和甲基丙烯酸甲酯、丙烯酸丁酯共聚合使纳米TiO2颗粒改性.研究结果表明,改性提高了纳米颗粒在涂料中的分散程度,降低了涂层的吸水性和透气性.更多还原

【Abstract】 A method is designed to modify nano-TiO₂ particles,by which nanoparticles are modified by silane coupling agent WD-70 with double bond group and then the silane coupling agent copolymerizes with methyl methacrylate and butyl acrylate to produce a thin polymer shell on the nanoparticles.The modified nanoparticles are applied as pigment to polyacrylate coating.The modification of nano-TiO₂ can improve its dispersibility in the coating and thereby reduce water absorption and permeability of the polyacrylate coating.更多还原