纳米TiO_2在EP中分散性研究  

Study on dispersibility of nano-TiO_2 in EP

作　　者：冉德龙[1] 谢建军[1] 黄凯[1] 罗迎社[2] 李娜[1] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]中南林业科技大学土木工程与力学学院,湖南长沙410004

出　　处：《中国胶粘剂》2012年第3期17-21,共5页China Adhesives

基　　金：湖南省教育厅重点项目资助(10A130)

摘　　要：采用不同方法[包括EP(环氧树脂)的pH值调节法、EP中添加改性剂法和改性剂吸附包覆纳米TiO2法等]对纳米TiO2在EP中的分散性进行了研究。结果表明:上述改性方法均能促进纳米TiO2在EP中良好分散:当EP的pH值为3时,相应胶粘剂的剪切强度比pH值未调节体系提高了11.46%;采用EP中添加改性剂法,并且当改性剂为SDBS(十二烷基苯磺酸钠)时,相应胶粘剂的剪切强度比无改性剂体系提高了6.7%;采用改性剂吸附包覆纳米TiO2法,并且当改性剂为SDS(十二烷基磺酸钠)、KH-560(硅烷偶联剂)和SDBS时,相应胶粘剂的剪切强度比无改性剂体系分别提高了41.7%(SDS)、16.4%(KH-560)和9.4%(SDBS)。The dispersibility of nano-TiO2 in epoxy resin（EP） was investigated by different methods（including adjusting pH value of EP,adding modifier into EP and nano-TiO2 adsorbed-coated by modifier）.The results showed that the aforementioned modified methods can all promote good dispersion of nano-TiO2 in EP.The shear strength of adhesive with EP＇s pH value at 3 was 11.46% more than that of adhesive without adjusted EP＇s pH value.The shear strength of adhesive with sodium dodecyl benzene sulfonate（SDBS） modifier was 6.7% more than that of adhesive without modifier when modifier was introduced into EP.With sodium dodecyl sulfonate（SDS）,silane coupler（KH-560） and SDBS respectively as modifiers,the shear strength of adhesive with modifier was 41.7%（SDS）,16.4%（KH-560） or 9.4%（SDBS） respectively more than that of adhesive without modifier when nano-TiO2 was adsorbed-coated by modifier.

关 键 词：纳米TIO2 环氧树脂 胶粘剂 分散性 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]