纳米TiO_2的表面处理对PET/TiO_2复合材料流变特性的影响  

Effect of nano-TiO_2 surface treatment on rheological behavior of PET/TiO_2 nanocomposites

作　　者：庄毅[1,2] 潘飞[1] 王华平[1] 张玉梅[1] 王彪[1] 江建明[1] 

机构地区：[1]东华大学材料学院纤维材料改性国家重点实验室,上海200051 [2]中国石油化工股份有限公司

出　　处：《合成纤维工业》2005年第5期12-14,共3页China Synthetic Fiber Industry

摘　　要：采用表面接枝改性的方法对纳米TiO2进行表面修饰,通过熔融共混制得PET/TiO2纳米复合材料,研究了不同表面特性的PET/TiO2复合材料的流变特性。结果表明:加入纳米TiO2的PET体系粘度降低,经表面接枝偶联剂γ-缩水甘油醚氧丙基三甲基硅烷(GPS)或聚甲基丙烯酸甲酯(PMMA)的TiO2对PET粘度的降低程度减弱,当纳米TiO2质量分数大于3%时,粘度趋于稳定。PET/PMMA-TiO2复合体系的粘流活化能最大,温度敏感性强。Nano-TiO2 particles were treated by surface grafting modification and used to produce PET/TiO2 nanocomposite by melt blending. The rbeolagical behavior of PET/TiO2 nanocomposites with various surface characters was studied. The results showed that the addition of nano-TiO2 particles decreased the viscosity of PET system. The effect of nano-TiO2 particles on the viscosity of PET system tended to be fade after surface grafting with coupling agent GPS or PMMA, and the viscosity appeared stable at the mass fraction of nano-TiO2 above 3%. The PET/PMMA-TiO2 nanocomposite had the maximum flow activate energy and high temperature sensitivity.

关 键 词：聚对苯二甲酸乙二酯 纳米复合材料 流变特性 表面改性 活化能 

分 类 号：TB383[一般工业技术—材料科学与工程]