纳米粘土/炭黑双相填料对天然橡胶性能的影响  

The Effects of Nanoclay/Carbon Black Dual Fillers on the Properties of Natural Rubber

作　　者：刘春亮[1] 李莉[1] 

机构地区：[1]高分子材料工程国家重点实验室(四川大学),四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2012年第9期64-68,共5页Polymer Materials Science & Engineering

基　　金：国家重点基础研究发展计划(973计划)资助(2007CB714700)

摘　　要：以有机纳米粘土替代部分炭黑,在材料内部引入形状各向异性的纳米片层,制备天然橡胶/炭黑/纳米粘土复合材料,研究了粘土含量对复合材料静态力学性能、动态力学性能、热稳定性、老化性及拉伸疲劳性能的影响。结果表明,以少量有机纳米粘土(2 phr～6 phr)替代部分炭黑可提高天然橡胶的硫化效率,增强复合材料的静态力学性能,降低动态损耗因子,提高复合材料的热稳定性、耐热空气老化性能及拉伸疲劳性能。与纯炭黑试样相比,复合材料拉伸强度最高提高91%,拉伸疲劳寿命提高31%,达55万次。Organic nanoclay（NC） with highly geometry anisotropic was introduced into natural rubber（NR） by replacing the same amount of carbon black（CB） to prepare NR/CB/NC nano-composites.The static mechanical properties,dynamic mechanical properties,thermal stability,aging resistance and tensile fatigue performance of the composites with different NC/CB ratios were investigated.The results show that NC/CB hybrid filler could not only improve the curing efficiency and the static mechanical properties of the composites,but also enhance the thermal stability and aging resistance as well as the tensile fatigue performance of the composite.Compared with CB25 sample,the tensile strength and the tensile fatigue of the composite with 2phr NC increase by 72% and by 31%,respectively.

关 键 词：天然橡胶 纳米粘土 炭黑 混合填料 性能 

分 类 号：TB383[一般工业技术—材料科学与工程]