机构地区: 中国热带农业科学院农产品加工研究所农业部热带作物产品加工重点开放实验室
出 处: 《安徽农业科学》 2009年第33期16224-16226,16236,共4页
摘 要: 采用胶乳共混法制备了TiO2/天然橡胶纳米复合材料。DMA分析结果表明,TiO2/天然橡胶复合材料的玻璃化转变温度和活化能高于纯天然橡胶。根据热分解动力学模型,求得硫化橡胶空白样,掺入TiO20.1%、0.5%、1.0%、2.0%的样品的分解活化能分别为229.699、231.085、201.727、219.107、208.249kJ/mol,动力学模型指前因子分别为5.07×1017、8.46×1017、2.94×1015、8.03×1016、1.04×1016/s。 The TiO2/ natural rubber nano-composite material was prepared by latex blending method. The results of DMA analysis showed that the glass transition temperature and activation energy of TiO2/ natural rubber composite material were all higher than those of pure natural rubber. According to the dynamic model of thermal decomposition, the decomposition activation energy of blank sample (vulcanized rubber) and the samples which contained TiO2 with 0.1%, 0.5% , 1.0% , 2.0% were 229. 699,231. 085,201. 727,219. 107,208. 249 kJ/mol resp. , and their pre exponential factor of dynamic model were 5.07 × 10^17, 8.46 × 10^17, 2.94 × 10^15, 8.03 × 10^16 , 1.04 × 10^16/s resp.
领 域: [一般工业技术]