基于可低温加工SEBS的发泡母粒及微发泡热塑性弹性体的制备  

Preparation of Foaming Masterbatches Based on Low-Temperature Machinable SEBS and Micro-foaming Thermoplastic Elastomers

作　　者：吕鹏飞 王超[1] 陆星远 邵树仁 张爱民[2] LYU Pengfei;WANG Chao;LU Xingyuan;SHAO Shuren;ZHANG Aimin(Yanshan Branch of Beijing Research Institute of Chemical Industry,National Engineering Research Center for Synthesis of Novel Rubber and Plastic Materials,Beijing 102500,China;State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]中国石油化工股份有限公司北京化工研究院燕山分院,橡塑新型材料合成国家工程研究中心,北京102500 [2]四川大学高分子国家重点实验室,四川成都610065

出　　处：《塑料工业》2024年第3期27-33,共7页China Plastics Industry

摘　　要：以可低温加工的氢化苯乙烯-丁二烯嵌段共聚物(SEBS)为基体,将偶氮二甲酰胺(AC)发泡剂、助发泡剂和表面活性剂制备成基于SEBS的发泡母粒,并采用双螺杆挤出机将发泡母粒与动态硫化三元乙丙橡胶(EPDM)/聚丙烯(PP)热塑性弹性体材料(TPE)共混熔融挤出,制备了微发泡TPE材料。研究了SEBS引入量与发泡母粒添加量对微发泡TPE样品的密度、拉伸性能以及泡孔形貌的影响。结果表明,当SEBS的质量分数低于6%,发泡母粒的质量分数为3%时,制备的微发泡TPE材料具有较低的密度、较高的拉伸性能,且泡孔规整度达到最优。The foaming masterbatches were prepared from the azodicarbonamide(AC)foaming agent,the blowing promotor,the surfactant and the hydrogenated styrene-butadiene block copolymer(SEBS)which can be processed at low temperature.The foaming masterbatches,dynamic vulcanized ethylene propylene diene monomer rubber(EPDM),polypropylene(PP)thermoplastic elastomer(TPE)were melt blended and extruded to prepare micro-foaming TPE materials via the twin-screw extruder.The effects of the contents of SEBS and foaming masterbatches on the density,mechanical properties and cell morphology of micro-foaming TPE samples were studied.The results show that when the mass fraction of SEBS is less than 6%and the mass fraction of foaming masterbatches is 3%,the prepared micro-foaming TPE material has lower density,higher mechanical properties,and its cell regularity reaches the best.

关 键 词：氢化苯乙烯-丁二烯嵌段共聚物 发泡母粒 偶氮二甲酰胺发泡剂 动态硫化热塑性弹性体 挤出发泡 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]