交联程度对发泡杜仲胶基形状记忆材料性能的影响  

Effect of crosslinking degree on properties of foamed eucommia ulmoides gum shape memory materials

作　　者：王彦[1] 夏琳[1] 辛振祥[1] WANG Yan;XIA Lin;XIN Zhen-xiang(Key Laboratory of Rubber-plastics of Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China)

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：《合成橡胶工业》2018年第5期383-388,共6页China Synthetic Rubber Industry

基　　金：国家自然科学基金青年科学基金资助项目(51303092);山东省高等学校科技计划资助项目(J 14 LA 12)

摘　　要：以热膨胀物理微球作发泡剂制备了发泡杜仲胶(EUG)基形状记忆材料,并考察了硫黄用量及交联程度对其形状记忆行为的影响。结果表明,随着硫黄用量的增加,EUG的交联程度增大,结晶度和熔融温度降低,材料的发泡程度并不随交联程度变化呈线性变化。力学性能与其交联程度、结晶度和发泡程度有关;随着交联程度的增加,热致形变回复率和热刺激响应温度降低,形变回复速率增大,当硫黄用量为0.8份时形状记忆性能最佳。Foamed eucommia ulmoides gum （EUG） based shape memory materials were prepared using thermal expansion physical microspheres as foaming agent, and the effects of the mount of sulfur and crosslinking degree on shape memory behavior were investigated. The results showed that crosslin- king degree increased with increasing amount of sul fur, while the crystalline degree and melting tempe rature of EUG decreased, and the degree of foaming showed nonlinear relationship with crosslinking de gree. Mechanical properties of foamed EUG shapememory materials were related to the crosslinking de- gree, crystalline degree and foaming structure of the composites. Both shape recovery ratio and thermal stimulus temperature decreased with increasing crosslinking degree, however, while shape recovery rate increased. When the amount of sulfur was O. 8 phr, the composite exhibited best shape memory properties.

关 键 词：杜仲胶 形状记忆 发泡 交联程度 形变回复速率 

分 类 号：TQ332.2[化学工程—橡胶工业]