聚苯乙烯/热塑性聚氨酯共混材料制备及超临界二氧化碳发泡  

Preparation and Research of Polystyrene/Thermoplastic Polyurethane Blending Foams Blowed with Supercritical CO_2

作　　者：孟倩倩 高长云[1] 冷秀江 康菲菲 辛振祥[1] MENG Qianqian GAO Changyun LENG Xiujiang KANG Feifei XIN Zhengxiang(Key Laboratory of Rubber-Plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China Qingdao Bonin Fortune Intelligent Transportation Technology Development Co. , LTD, Qingdao 266109, 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 [2]青岛博宁福田智能交通科技发展有限公司,山东青岛266109

出　　处：《青岛科技大学学报（自然科学版）》2017年第5期90-94,共5页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：山东省自然科学基金项目(ZR2011EMQ013)

摘　　要：利用熔融共混方法制备了不相容体系聚苯乙烯(PS)与热塑性聚氨酯(TPU)的共混物,采用超临界流体发泡方法制备了不同PS/TPU配比的发泡试样。研究了不同配比时共混试样的拉伸性能,用扫描电子显微镜(SEM)观察了发泡试样的泡孔结构。拉伸性能研究结果表明:随TPU含量增加,试样拉伸强度呈先降低后增加的趋势,两种组分各占一半时拉伸强度最低。当TPU质量分数为20%时,得到了细密均匀的发泡材料,泡孔尺寸小且泡孔分布均匀。Incompatible blends system of polystyrene（PS）and thermoplastic polyurethane（TPU）were prepared by melt blending method.The foams with various PS and TPU content ratio were prepared and blowed with supercritical fluid.The tensile property of the blends was investigated,and cell morphology was observed using a scanning electron microscope（SEM）.Mechanics results showed that the tensile strength decreased first and then increased with the increase of TPU.When the two components were equal,the tensile strength reached its lowest point.Fine homogeneous foam structure with small cell size and uniform cell distribution was achieved when TPU content was 20%.

关 键 词：聚苯乙烯 热塑性聚氨酯 超临界二氧化碳发泡 泡孔形态 

分 类 号：O063[理学]