塑炼对SBR热氧和紫外老化性能的影响  

Effect of plastication on thermal and UV aging properties of SBR Vulcanizates

作　　者：刘宏敏[1] 杨其[2] 高灵强[1] 刘小林[1] 冯彦龙[1] 

机构地区：[1]四川大学高分子科学与工程学院 [2]高分子材料工程国家重点实验室,四川成都610065

出　　处：《广东橡胶》2008年第6期6-11,5,共7页Guangdong Rubber

摘　　要：通过不同的薄通次数对丁苯橡胶进行塑炼，用GPC测试样分子量。试样分别在热氧100℃和紫外光波长峰值在420nm的条件下，老化60，120，240，360小时后，测试试样拉伸强度，断裂伸长率，邵氏硬度。研究了不同塑炼程度对SBR硫化橡胶热氧和紫外老化性能的不同影响。The molecular weight of SBR with different plastication times were observedby ti GPC.The aging characteristics of styrene butadiene rubber（SBR） with different plastication mes were investigated.Tensile strength,elongation at break,shore and A hardness of the polymer were tested after ageing for 60,120,240,360 hours at 100℃ and UV irradiation which wavelength was 420nm. Experiments showed that thermal and UV aging properties of SBR vulcanizates were variably affected by different plastication times.

关 键 词：丁苯橡胶 塑炼 热氧老化 紫外老化 

分 类 号：TQ333.7[化学工程—橡胶工业] X703[环境科学与工程—环境工程]