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
吕鹏飞 1王超 1陆星远 2邵树仁 2张爱民2
作者信息
- 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
- 折叠
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.
Abstract
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 than6%and the mass fraction of foaming masterbatches is3%,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Key words
Hydrogenated Styrene-Butadiene Block Copolymer/Foaming Masterbatch/Azodicarbonamide Foaming Agent/Dynamic Vulcanized Thermoplastic Elastomer/Extrusion Foaming引用本文复制引用
出版年
2024
NETL
NSTL
万方数据