反式-1,4-聚异戊二烯的结晶性对丁苯橡胶/反式-1,4-聚异戊二烯共混硫化胶动态力学性能的影响  

Effect of crystallinity of trans-1,4-polyisoprene on dynamic mechanical properties of styrene-butadiene rubber/trans-1,4-polyisoprene blend vulcanizates

作　　者：杨晨燕[1] 张钰[1] 张志广[1] 杜爱华[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室/山东省橡塑材料与工程重点实验室,山东青岛266042

出　　处：《合成橡胶工业》2012年第4期258-262,共5页China Synthetic Rubber Industry

基　　金：山东省教育厅资助项目(BS 2009 CL 024);国家自然科学基金资助项目(51073085)

摘　　要：用动态力学分析仪和差示扫描量热仪研究了丁苯橡胶(SBR)/反式-1,4-聚异戊二烯(TPI)共混硫化胶的动态力学性能和结晶性能。结果表明,SBR与TPI的两相相容性良好。随着TPI用量的增加,SBR/TPI共混硫化胶的玻璃化转变温度向低温方向移动,且损耗因子峰值逐渐降低。用炭黑填充CV体系硫化SBR/TPI共混胶的损耗因子峰值低于相应的未填充胶料;而当TPI晶体熔融后,炭黑填充胶料的损耗因子要大于未填充者。不同硫化体系硫化SBR/TPI共混胶的损耗因子峰值和玻璃化转变温度从大到小的变化依次为CV体系、EV体系和DCP体系。Abstract： The dynamic mechanical properties and crystallinity of styrene-butadiene rubber（SBR） / trans-I , 4-polyisoprene （TPI） blend vulcanizates were investigated by dynamic mechanical analyzer and differential scanning calorimeter. The results showed that there existed good compatibility between SBR and TPI. With the increase of TPI amount, the glass transition temperature （Tg） of SBR/TPI blend vulcanizates moved towards lower temperature, and the tan ~ peak value decreased gradually. The tan 8peak value of carbon black filled SBR/TPI blend vulcanized by CV system was lower than that of the corresponding unfilled samples but higher than that of unfilled specimens after TPI crystal melting. The tan δ peak and Tg values of SBR/TPI blends vulcan- ized by different curing systems decreased in the or- der of CV system, EV system and DCP system.

关 键 词：反式-1 4-聚异戊二烯 结晶性 丁苯橡胶 共混硫化胶 动态力学性能 

分 类 号：TQ330.1[化学工程—橡胶工业]