超临界CO_2发泡热塑性聚烯烃弹性体材料的研究  

Study on Foaming Properties of Thermoplastic Polyolefin Elastomer with Supercritical CO_2

作　　者：丁美娟 曹贤武[1] 梁健飞 何光建[1] DING Meijuan;CAO Xianwu;LIANG Jianfei;HE Guangjian(The Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Nation Engineering Research Center of Novel Equipment for Polymer Processing,Guangzhou 510640, China)

机构地区：[1]聚合物成型加工工程教育部重点实验室华南理工大学聚合物新型成型装备国家工程研究中心,广州510640

出　　处：《中国塑料》2019年第1期1-5,共5页China Plastics

基　　金：国家重点研发计划(2016YFB0302000)

摘　　要：用超临界CO_2作为物理发泡剂,采用间歇釜式微孔发泡技术制备了热塑性聚烯烃弹性体(POE)发泡材料,应用扫描电子显微镜等测试手段探究了发泡温度及饱和压力对POE发泡材料表观结构和微观形态的影响。结果表明,发泡温度和饱和压力对材料泡孔结构和性能影响较大;当饱和压力为10 MPa、发泡温度为65℃时,所得的POE发泡材料表观密度较小、发泡倍率大,其内部泡孔密度较大,泡孔尺寸分布均匀。hermoplastic polyolefin elastomer (POE) foams were prepared by a batch kettle microcellular foaming technology using supercritical CO2 as a physical foaming agent. The effects of foaming temperature and saturation pressure on the apparent structure and morphology of POE foams were investigated by scanning electron microscopy. The results indicated that the foaming temperature and saturation pressure were the main factors that affected the structure and properties of the foams. The POE foams exhibited a low apparent density and a high expansion ratio when the saturation pressure was set as 10 MPa and the foaming temperature was set at 65 ℃. Under this condition, the POE foams achieved a large internal cell density and a uniform cell distribution.

关 键 词：热塑性聚烯烃弹性体 超临界流体 微孔发泡 发泡温度 饱和压力 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]