摘要
研究硫化温度对天然橡胶(NR)/顺丁橡胶(BR)/反式丁戊橡胶(TBIR)并用胶(并用比35/45/20)性能的影响,并与NR/BR并用胶(并用比为45/55)进行对比。结果表明:随着硫化温度由140℃升至180℃,NR/BR和NR/BR/TBIR胶料的硫化曲线平坦性变差,t_(10)和t_(90)明显缩短,交联密度降低;NR/BR和NR/BR/TBIR硫化胶的硬度和定伸应力降低,拉断伸长率提高,撕裂强度变化不大,回弹值略有减小,压缩温升略有升高;在较宽的硫化温度范围内,TBIR可明显改善NR/BR并用胶的相容性和耐疲劳性能。
The influence of vulcanization temperature on the properties of natural rubber(NR)/cis-1,4-polybutadiene rubber(BR)/trans-1,4-poly(butadiene-co-isoprene)rubber(TBIR)blend(blend ratio of 35/45/20)was investigated,and compared with that of NR/BR blend(blend ratio of 45/55).The results showed that the flatness of the vulcanization curves of the NR/BR blends and NR/BR/TBIR blends decreased with the increase of the vulcanization temperature from 140℃to 180℃,the t_(10) and t_(90) were significantly shortened,and the cross-linking density was reduced.The hardness and tensile stress at a given elongation of NR/BR blend and NR/BR/TBIR vulcanizates decreased,the elongation at break increased,the tear strength changed little,the rebound value decreased slightly,and the compression heat build-up increased slightly.TBIR could improve the compatibility and fatigue resistance of NR/BR blend significantly over a wide range of vulcanization temperatures.
作者
王浩
李兰阁
王日国
栾波
WANG Hao;LI Lange;WANG Riguo;LUAN Bo(Shandong Chambroad Holding Group Co.,Ltd,Binzhou 256500,China;Shandong Huaju Polymer Materials Co.,Ltd,Binzhou 256500,China;Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization,Binzhou 256500,China)
出处
《橡胶工业》
CAS
2024年第1期19-23,共5页
China Rubber Industry
基金
国家重点研发计划项目(SQ2022YFB3700063)
山东省重大科技创新工程项目(2021CXGC010901)。
