高等学校化学学报2018，Vol.39Issue(6)：1334-1341,8.DOI:10.7503/cjcu20170676
TBIR改性BIIR/NR共混物的结构与性能
Structure and Properties of Brominated Butyl Rubber/Nature Rubber( BIIR/NR) Blends Modified with TBIR
摘要
Abstract
As a new generation of synthetic rubber, trans-1,4-poly(butadiene-co-isoprene) copolymer rubber (TBIR) was used to modify brominated butyl rubber(BIIR)/nature rubber(NR) blends for high performance inner liner stocks in all steel radial truck tire, and the crosslinking density, filler dispersion, physical and mechanical properties including gas permeability and flexual fatigue resistance of the BIIR/ NR/ TBIR blends after crosslinking were studied in details. The results indicate that the carbon black filled BIIR/ NR/ TBIR compounds show increased green strength and modulus with increased TBIR content, and DSC curves prove the crystallizability of TBIR component in the compounds and the crystallization peaks from TBIR can still be detected in the BIIR/NR/TBIR vulcanizates. Blending TBIR with BIIR/NR, the optimum curing time(t90 ) and the crosslinking density of the compounds slightly reduced. The BIIR/NR/TBIR vulcanizates showed excellent properties, such as improved hot-air aging resistance (10％ higher) and air barrier resistance (17％ higher), and greatly improved the 1st-class crack resistance(2 to 5 times higher). The mean size of the carbon black aggregates in BIIR/NR vulcanizate after fatigue test became larger than that in BIIR/ NR/ TBIR vulcanizates. Finally, the structure evaluation of the BIIR/NR/TBIR vulcanizates and its influences in the crack initiation resistance during the dynamic process with periodical stress and strain were discussed in details. TBIR is deemed as an ideal candidate to modify BIIR or BIIR/ NR blends for truck tire inner liner stocks with higher crack initiation resistance without deteriorating of other properties.关键词
反式-1,4-丁二烯-异戊二烯共聚橡胶/气密层/气密性/动态疲劳性能/老化性能/溴化丁基橡胶/天然橡胶Key words
Trans-1,4-poly(butadiene-co-isoprene) copolymer rubber/Inner liner/Gas barrier/Flex fatigue property/Aging/Brominated butyl rubber/Nature rubber分类
化学化工引用本文复制引用
张剑平,宋丽媛,王浩,王日国,贺爱华..TBIR改性BIIR/NR共混物的结构与性能[J].高等学校化学学报,2018,39(6):1334-1341,8.基金项目
国家重点基础研究发展计划项目[批准号:2015CB654700(2015CB654706)]、 国家自然科学基金(批准号: 51473083)、泰山学者工程、 山东省重大基础研究项目(批准号:ZR2017ZA0304)、山东省重点项目研发计划项目(批准号:2015GGX102019)和黄河三角洲学者工程资助. Supported by the National Basic Research Program of China [ No.2015CB654700 ( 2015CB654706 ) ] , the National Natural Science Foundation of China( No.51473080) , the Taishan Scholar Program, China, the Significant Basic Research Program of Shandong Province, China (No.ZR2017ZA0304) and the Yellow River Delta Scholar Program, China. （2015CB654706）
