钛酸酯偶联剂对纳米TiO_2的表面改性及对其改性性能的影响  

Effects of the Surface Modification and Modification Property of nano-TiO_2 with Titanate Coupling Agents

作　　者：王琳琳[1] 吴锐[1] 马晓东[1] 涂小明 

机构地区：[1]银川能源学院石油化工系,宁夏银川750105 [2]奉节县环境监测站,重庆404600

出　　处：《皮革与化工》2014年第6期20-23,42,共5页Leather And Chemicals

基　　金：银川能源学院科研项目基金(编号2013-KY-Y-02)

摘　　要：本文利用亲油化度测试筛选出钛酸酯偶联剂TC-201为纳米Ti O2的表面改性剂。研究偶联剂用量、改性时间、改性温度、p H值对纳米Ti O2分散时间的影响。采用FTIR、TEM手段表征了纳米Ti O2的改性效果。实验结果表明:TC-201以化学键形式与纳米Ti O2表面羟基结合。当钛酸酯偶联剂TC-201用量为3.5%,改性时间为60min,改性温度为46℃左右,p H=5.2时,Ti O2的分散时间最长,故改性效果最好。In this paper, by using the Lipophilic degree test,the titanate coupling agent TC-201 as surface modified agent for the nano-TiO2 was selected. The infiuence facters including the content of coupling agent, modification time, modification temperature and pH value on the dispersion time of nano-TiO2 were studied. The prepared samples were investigated by FTIR and TEM. The rsults showed that when the content of coupling agent was 3.5%,modification time was about 60min, modification temperature was 46℃and pH was 5.2, the dispersion time was the longest,so the effcets of the modified TiO2 was the highest. As chemical bond, TC-201 was combined with hydroxyl groups on the surface of nano- TiO2 particles.

关 键 词：纳米TIO2 钛酸酯偶联剂TC-201 亲油化度 分散时间 

分 类 号：TQ134.11[化学工程—无机化工]