平衡硫化体系硫化天然橡胶的性能研究  

Study on Properties of NR Vulcanizate Cured with Equilibrium Curing System

作　　者：孟宪德[1] 王名东[1] 纪奎江[1] 马培瑜[1] 

机构地区：[1]青岛化工学院橡胶工程学院,化工部海洋涂料研究所

出　　处：《橡胶工业》1995年第9期521-525,共5页China Rubber Industry

摘　　要：对平衡硫化（ＥＣ）体系硫化天然橡胶（ＮＲ）的性能进行了研究，并与半有效硫化（ＳＥＶ）体系和传统硫化（ＣＶ）体系硫化ＮＲ进行了对比。结果表明，ＥＣ体系返原作用略高于ＳＥＶ体系，明显低于ＣＶ体系，硫化６ｈ时的返原率依次为７．７％，０．４％和３４．０％；与ＳＥＶ和ＣＶ体系相比，ＥＣ体系ＮＲ硫化胶拉伸强度、撕裂强度和３００％定伸应力高，生热低，耐磨性和耐屈挠性好。ＥＣ体系ＮＲ硫化胶的耐热氧老化性能优于ＳＥＶ体系，更优于ＣＶ体系。The properties of NR vulcanizate cured with EC system were studied and compared with those cured with SEV system or CV system. The results showed that the reversion of EC system was a little higher than that of SEV system, but remarkable lower than that of CV system, and the reversion rates of their vulcanizates (cure: 143℃×6h) were 7. 7%, 0. 4% and 34.0% respectively; the NR vulcanizate cured with EC system was better than those cured with SEV or CV system in terms of tensile strength, tear strength, 300% medulus, heat build-up, abrasion and flex resistance. The heat ageing property of EC vulcanizate was better than that of SEV vulcanizate, and mulch better than that of CV vulcanizate.

关 键 词：天然橡胶 硫化体系 平衡硫化 硫化剂 

分 类 号：TQ332[化学工程—橡胶工业]