摘要
采用一步法制备出EVA/TiO2纳米复合材料,利用FESEM、FTIR、SEM等测试手段表征纳米TiO2微粒在EVA基体中的分散性,并研究其力学性能及流变性能.结果表明,TiO2微粒以20-60nm的粒径分散于EVA基体之中,并与EVA形成化学键合结构,断裂时脆性转变为韧性.当纳米TiO2填充量为5%时,拉伸强度提高22.6%,纳米TiO2填充量为1%时,断裂伸长率提高10.1%.本实验中制备的纳米复合熔体表观粘度低于纯EVA,熔点变化较少,有效改善了加工流动性.
Ethylene vinylacetate （EVA）/TiO2 nano- composite material has been prepared by one -step method. The dispersibility of nano - TiO2 in EVA matrix was characterized by FESEM, FTIR spectroscopy and SEM. The mechanical and rheological properties of EVA/TiO2 nano - composite material were studied. It was found that TiO2 particles with pore size of about 20 - 60 nm dispersed in EVA matrix, linked with EVA through chemical bond and were transformed from brittleness to toughness when ruptured. The tensile strength of EVA/TiO2 nano - composite material had a 22. 6% increase when the quantity of TiO2was 5% 0 and its elongation at break had a 10. 1% increase when the quantity of TiO2was 1%. The apparent viscosity of nano - composite melt was lower than the pure EVA, and its melting changed a little.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2007年第3期409-412,共4页
Materials Science and Technology
基金
国家高技术发展计划资助项目
