摘要
研究泰国北部STR20 1~#、泰国南部STR20 2~#、马来西亚SMR20和缅甸MSR20四种天然橡胶标准胶的微观结构和性能。结果表明,SMR20和STR20 2~#除了含有顺式聚异戊二烯外,还含有少量聚异戊二烯3,4-结构单元,且SMR20蛋白质含量最高,耐热氧老化能力最强。在加工性能方面,SMR20加工性能最好,凝胶含量最低,STR20 1~#加工性能最差。在物理性能方面,SMR20和STR20 1~#硫化胶的定伸应力、拉伸强度和耐磨性能优于MSR20硫化胶,但抗撕裂性能比MSR20硫化胶差。SMR20硫化胶的抗湿滑性能最好,滚动阻力小,动态力学性能最优。
Microstructure and properties of four standard natural rubbers from northern Thailand（STR20 1^#）,southern Thailand（STR20 2^#）,Malaysia（SMR20）and Myanmar（MSR20）were studied. The results showed that the SMR20 and STR20 2^# raw rubber contained large number of cis-polyisoprene and small amount of 3,4-structural units. The content of protein in SMR20 raw rubber was the highest,and its antioxidant ability was the best. In term of processability,SMR20 had the best processability and the lowest gel content,but STR20 1^# had the worst processability. The physical properties,modulus,tensile strength and wear resistance of SMR20 and STR20 1^# vulcanizates were better than those of MSR20 vulcanizate,but the tear resistance was poorer than that of MSR20 vulcanizate. SMR20 vulcanizate had the best wet skid resistance,lower rolling resistance and excellent dynamic mechanical properties.
作者
林广义
孔令伟
井源
王祥
王权杰
朱连超
LIN Guangyi;KONG Lingwei;JING Yuan;WANG Xiang;WANG Quanjie;ZHU Lianchao(Qingdao University of Science and Technology, Qingdao 266061, China;Shanghai Sri Trang Trading Co. , Ltd, Shanghai 200040, China)
出处
《橡胶工业》
CAS
2018年第6期605-611,共7页
China Rubber Industry
基金
山东省重点研发计划项目(2017 GSF17127)
青岛市民生计划项目(17-6-3-16-gx)
关键词
天然橡胶
微观结构
加工性能
物理性能
抗湿滑性能
滚动阻力
耐磨性能
natural rubber
microstructure
processability
physical property
wet skid resistance
rolling resistance
wear resistance
