充油SEBS/PP热塑性弹性体的制备及性能研究  

Study on Properties of Oil-extended SEBS/PP Thermoplastic Elastomer and Its Preparation

作　　者：战双双 苑宾[1] 牟晓娟[1] 张迪[1] 刘世练 李荣勋[1] 

机构地区：[1]青岛科技大学高性能聚合物及成型技术教育部工程研究中心,山东青岛266042

出　　处：《塑料科技》2015年第1期46-50,共5页Plastics Science and Technology

摘　　要：采用HAAKE转矩流变仪制备了充油苯乙烯-乙烯-丁二烯-苯乙烯嵌段共聚物/聚丙烯(SEBS/PP)热塑性弹性体,利用热重分析(TG)、差示扫描量热法(DSC)等研究了填充油对SEBS/PP加工性能、热稳定性和力学性能的影响,并考察了该充油SEBS/PP中PP的结晶行为。结果表明:填充油的加入可以明显改善SEBS/PP的加工性能。在各种充油SEBS/PP体系中,添加了石蜡油KP6030的SEBS/PP体系具有最优综合力学性能,而且该体系的热分解温度最高、失重率最低、热稳定性能最好。另外在充油SEBS/PP体系中,PP的结晶温度降低、结晶度基本不变、结晶速率加快。Oil-extended styrene-ethylene-butadiene-styrene block copolymer/polypropylene （SEBS/PP） thermoplastic elastomer were prepared by Haake torque rheometer. The effects of extending oil on processability, thermal stability and mechanical properties of SEBS/PP, and crystallization behavior of PP in the oil-extended SEBS/PP were studied by thermal gravity analysis （TG）, differential scanning calodmetry （DSC）, etc. The results show that the addition of oil can significantly improve the processability of SEBS/PP. In the different oil-extended SEBSIPP systems, the KP6030 paraffin oil-filled SEBS/PP system possesses the optimum comprehensive mechanical properties, and the system has the highest thermal-decomposition temperature, lowest weight loss rate, and the best thermal stability. Moreover, the crystallization temperature of PP in oil-extended SEBS/PP reduces, but crystallinity remains unchanged, and crystallization rate increases.

关 键 词：苯乙烯-乙烯-丁二烯-苯乙烯嵌段共聚物 聚丙烯 热稳定性 结晶 

分 类 号：TQ334[化学工程—橡胶工业]