EC、SEV、及CV硫化NR的对比研究  

Comparison of NR Cured with EC, SEV and CV

作　　者：孟宪德[1] 王名东[1] 马培瑜[1] 

机构地区：[1]青岛化工学院,化工部海洋涂料研究所,北京橡胶设计院

出　　处：《青岛化工学院学报（自然科学版）》1996年第1期46-50,共5页Journal of Qingdao Institute of Chemical Technology(Natural Science Edition)

摘　　要：研究了平衡硫化体系（ＥＣ）硫化天然橡胶（ＮＲ）的硫化返原、拉伸性能、撕裂强度、耐磨性、耐屈挠性及生热性随硫化时间的变化，并与半有效硫化体系（ＳＥＶ）及传统硫化体系（ＣＶ）进行了对比。结果表明，ＥＣ硫化ＮＲ的返原作用略高于ＳＥＶ，但明显地低于ＣＶ，硫化６ｈ返原率依次为７．７％、０．４％极３４．０％；与ＳＥＶ及ＣＶ相比，在不同硫化时问下，ＥＣ硫化ＮＲ具有高的拉伸强度、撕裂强度及３００％定伸应力，低的生热性，好的耐磨性和耐屈挠性。对不同硫化体系硫化ＮＲ的化学应力松弛的测定表明，ＥＣ硫化胶的耐热氧老化性优于ＳＥＶ，更优于ＣＶ。Reversion, tensile property, tear strength, abrasion, flex property and varying heat build-up with cure time of natural rubber (NR) cured with equilibrium cure system (EC) were studied.And the comparison was carried out among the three cure systems of EC, semi-effective vulcanitalion (SEV) and conventional vulcanization (CV). The reversion of NR was slightly higher in EC than that in SEV and considerably lower than that in CV. The six-hour curing reversion was 7.7% in EC, 0.4% in SEV and 34. 0% in CV, respectively. NR cured with EC,compared with SEV and CV, had a comprehensive property such as tensile, tear strength, 300% modulus,heaat build-up, abrasion and flex property at any cure time. The measurements of chemical stress relaxation behaviour revealed that the vulcanizate cured with EC had a better property of thermooxidative aging resistance than that cured with both SEV and CV

关 键 词：天然橡胶 平衡硫化体系 硫化体系 橡胶 

分 类 号：TQ330.13[化学工程—橡胶工业]