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.
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