伸张疲劳对未填充顺丁橡胶/反式-1,4-聚异戊二烯并用硫化胶结构和性能的影响  

Effect of Tensile Fatigue on Structure and Performance of Unfilled BR/TPI Blend Vulcanizates

作　　者：张钰[1] 任佳帅[1] 赵学康[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,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2013年第2期171-175,共5页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：山东省教育厅资助项目(BS2009CL024);国家自然科学基金项目(51073085)

摘　　要：研究伸张疲劳对顺丁橡胶(BR)及不同配比BR/反式-1,4-聚异戊二烯(TPI)并用硫化胶的拉伸性能、交联结构及形变能密度的影响。结果表明,BR并用TPI以后,硫化胶力学性能明显改善,但交联密度降低;在伸张疲劳初期,随着疲劳次数的增加,BR的拉伸强度、交联密度及形变能密度变化不明显,而BR/TPI并用硫化胶的拉伸强度、交联密度及形变能密度呈现上升趋势,当TPI并用量少于30份时,BR/TPI并用硫化胶在疲劳60万次时,拉伸强度、交联密度和形变能密度均达到最大值。Effect of tensile fatigue on tensile properties, crosslink density and strain en- ergy density of unfilled BR and BR/TPI blend vulcanizates was investigated. The results showed that, when TPI blended with BR, dynamic performances of blend vulcanizates were improved significantly, but Crosslink density decreased. At the initial stage of ten- sile fatigue process, as increasing fatigue cycle, tensile strength, crosslink density and strain energy density of BR varied not obviously, but those of BR/TPI blend vulcani- zates increased gradually, when the dosage of TPI was below 30phr, The tensile strength, crosslink density and strain energy density of BR/TPI blend vulcanizates reached their maximum when tensile fatigue cycles came to 600 thousand times.

关 键 词：反式-1 4-聚异戊二烯(TPI) 伸张疲劳 拉伸性能 结晶性 

分 类 号：TQ330.1[化学工程—橡胶工业]