摘要
采用不同加工工艺制备多官能化丁基橡胶(MFIIR)/天然橡胶(NR)并用胶,并对其硫化特性、加工性能、物理性能和动态力学性能进行研究。结果表明:采用预硫化工艺后MFIIR/NR并用胶的t10和t90明显延长,表明硫化剂在2种橡胶相中的分散更加均匀;并用胶的物理性能得到改善,拉伸强度、拉断伸长率和撕裂强度明显增大。预硫化后混炼胶在应变为100%时的储能模量增大,硫化胶的Payne效应减弱。预硫化后并用胶的网络结构更加均匀,两种橡胶可以达到很好的共硫化。
The multifunctional IIR （MFIIR）/NR blend was prepared by using different processing technology, and the curing behavior, processability, physical properties and dynamic mechanical proper- ties of the blend were investigated. The results showed that, the tl0 and tg0 of MFIIR/NR blend after prevulcanization were obviously prolonged,indicating that the curing agents were dispersed uniformly in rubber phase. After the prevulcanization process, the physical properties of the blend were im- proved. Especially, the tensile strength, elongation at break and tear strength increased significantly. The storage modulus at large strain（100%） increased after the prevulcanization,which implied the Payne effect of the vulcanizate was weakened. The network structure of MFIIR/NR blend after pre- vulcanization was more uniform, and MFIIR and NR could be well co-vulcanized.
出处
《橡胶工业》
CAS
北大核心
2014年第9期536-540,共5页
China Rubber Industry
