碳纳米管/天然橡胶复合材料的制备及性能

对碳纳米管/天然橡胶复合材料的制备工艺和材料性能进行了研究。碳纳米管与天然橡胶复合后,橡胶DSC曲线中结晶熔融峰变小,硫化返原现象减轻,焦烧时间略有缩短。经过分散-粘合体系处理,碳纳米管在橡胶中的分散程度及界面粘合状况改善,复合材料的整体力学性能提高,与炭黑增强样品相比,碳纳米管复合材料在回弹及动态压缩性能方面占有优势,动态模量和玻璃化转变温度高,热降解稳定性较好。

PREPARATION AND PROPERTIES OF CARBON NANOTUBES/NATURAL RUBBER COMPOSITES

The preparation technology and performances of carbon nanotubes/natural rubber composites were studied. After the carbon nanotubes were added into natural rubber matrix, the area of crystal-melting peak of DSC curve of rubber decreases. At the same time, the scorch time of rubber shortens slightly, and the curing reversion reduces. The dispersing of carbon nanotubes in rubber and the adhesion between carbon nanotubes and rubber are improved after being treated with the dispersing-bonding system. The mechanical properties of carbon nanotubes composites increase. The rebound degree and the dynamic compress properties of carbon nanotubes composites are more superior to those of natural rubber filled with carbon black. Compared with the sample filled with carbon black, the storage modulus and the glass transition temperature of carbon nanotubes reinforced composites are higher, and the thermal stability is also preferable.