EPDM/NR复合发泡材料的结构与性能研究  

Study on structures and properties of foamed EPDM/NR composites

作　　者：邵亮[1] 许冉 王晨阳 姬占有 SHAO Liang;XU Ran;WANG Chen-yang;JI Zhan-you(College of Chemistry and Chemical Engineering,Shaanxi Key Laboratory of Chemical Additives for Industry,Shaanxi University of Science&Technology,Xi′an 710021,China)

机构地区：[1]陕西科技大学化学与化工学院陕西省轻化工助剂重点实验室

出　　处：《陕西科技大学学报》2020年第1期93-97,共5页Journal of Shaanxi University of Science & Technology

基　　金：陕西省教育厅服务地方科学研究计划项目(19JC003);陕西省西安市未央区科技计划项目(201859)

摘　　要：针对天然橡胶(NR)发泡材料撕裂性能较差的问题进行了研究,以天然橡胶和三元乙丙橡胶为基体,采用物理共混法制备了复合发泡材料,对制备工艺中三元乙丙橡胶的用量进行了探讨.使用扫描电镜对混炼胶进行了相容性分析;使用密度仪、邵氏硬度计、落球回弹测试仪、万能材料试验机等对复合材料的物理和机械性能进行了分析.结果表明,NR和EPDM未发生明显的相分离;当三元乙丙橡胶含量为40 phr时,材料的密度、硬度、回弹和撕裂强度达到0.56 g/cm 3、68(Shore A)、58%和6.91 N/mm,其中撕裂强度是纯天然橡胶发泡材料的2.03倍.In this paper,natural rubber and EPDM were used as matrix,and the physical blending method was used to prepare composite foamed materials.The compatibility of the compound was analyzed by SEM.The physical and mechanical properties of composite materials were analyzed by means of density tester,Shore hardness tester,falling ball rebound tester and universal material testing machine.The results showed that there was no significant phase separation between NR and EPDM.When the content of EPDM is 40 phr,the density,hardness,resilience and tear strength of the material reach 0.56 g/cm 3,68(Shore A),58%and 6.91 N/mm,among which the tear strength is 2.03 times that of pure natural rubber foam material.

关 键 词：天然橡胶 三元乙丙橡胶 撕裂性能 收缩率 

分 类 号：TQ332[化学工程—橡胶工业]