不同碳纤维填充氯丁橡胶热老化前后的性能

Properties of Chloroprene Rubber Filled with Different Carbon Fibers before and after Hot-Oxygen Aging

摘要: 以氯丁橡胶(CR)作为基料，分别以不同规格的碳纤维(CF：2 mm、5 mm)作为填充剂，研究CF的加入对CR的物理机械性能和热空气老化性能的影响。详细研究了添加不同量(0，5，10，15，20，25份)的两种CF (2 mm、5 mm)后CR材料的性能。结果表明CF对CR的性能具有较大的影响，随着CF填充量的增加，CR的邵氏A硬度、300%定伸应力和撕裂强度提高，而拉伸性能降低。特别是CF的填充使得CR材料具有更加优异的抗老化性能，其力学性能在100℃老化72 h后均明显增加。

Abstract: The effect of carbon fibers (CF) with different contents (0, 5, 10, 15, 20 and 25 phr) on the physical and mechanical strength, and hot-oxygen aging properties of chloroprene rubber (CR) has been investigated based on CR filled with different CF (2 mm and 5 mm) in this paper. The properties of CR filled with the two types of CF varying from 0 to 25 phr have been studied in detail. The results show that CF has great influences on the properties of CR. With the increase of CF added, the Shore A hardness, modulus at 300% and tear strength all increase, while the tensile strength decreases. Especially, the filler CF makes CR have excellent anti-aging properties, and the mechanical proper-ties of CR with different content of CF greatly increase in heat aging box for 72 h at 100˚C.