国产钕系异戊橡胶的性能研究

Study on Properties of Domestic Nd-Isoprene Rubber

研究国产钕系异戊橡胶(Nd-IR)的性能,并与天然橡胶(NR)和俄罗斯钛系异戊橡胶(牌号SKI-3)进行对比。结果表明:NR生胶及其炭黑混炼胶的应力-应变曲线有拉伸诱导结晶现象,而Nd-IR生胶及其炭黑混炼胶均未出现拉伸诱导结晶现象。Nd-IR硫化胶的应力-应变曲线变化趋势与NR和SKI-3相近,当应变低于600%时,其应力稍大于SKI-3。与SKI-3相比,Nd-IR生胶及其炭黑混炼胶和硫化胶的物理性能差别不大。适当增大促进剂用量能够使Nd-IR硫化胶的物理性能与NR硫化胶相近。

The properties of domestic neodymium polyisoprene rubber（Nd-IR） were investigated, and compared with those of natural rubber（NR） and Russian titanium polyisoprene rubber（SKI-3）. The results showed that,NR and its carbon black filled compound possessed strain-induced crystalliza- tion phenomenon,but the Nd-IR and its carbon black filled compound didn＇t have that. The shape of the tensile stress-strain curve of Nd-IR vulcanizate was similar to that of vulcanized NR and Russian SKI-3. When the strain level was less than 600%,the stress of Nd-IR vulcanizate was slightly higher than that of Russian SKI-3 vulcanizate. The physical properties of Nd-IR and its carbon black filled compound and vulcanizate were similar to those of Russian SKI-a. The physical properties of Nd-IR vulcanizate could be similar to NR vulcanizate by appropriately increasing the addition level of accelerator.