不同发泡剂对微发泡PP复合材料发泡及表面质量的影响  

Effect of different foaming agents on foaming and surface quality of micro-foamed polypropylene composites

作　　者：龚维[1,2,3] 何力 班大明[1,2] 付海[1,2] 尹晓刚 GONG Wei;HE Li;BAN Daming;FU Hai;YIN Xiaogang(School of Materials and Architecture Engineering,Guizhou Normal University,Guiyang,Guizhou 550025,China;Functional Polymer Materials Technology Innovation Talent Team of Guizhou Province,Guiyang,Guizhou 550025,China;National Engineering Research Center for Compounding and Modification Polymeric Materials,Guiyang,Guizhou 550014,China)

机构地区：[1]贵州师范大学材料与建筑工程学院,贵州贵阳550025 [2]贵州省功能高分子材料科技创新人才团队,贵州贵阳550025 [3]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《贵州师范大学学报（自然科学版）》2019年第1期15-19,共5页Journal of Guizhou Normal University：Natural Sciences

基　　金：贵州省科技优秀人才项目[(2015)No.29];贵州省"百"层次人才项目[2016]No.5673

摘　　要：以化学发泡为主线,通过注塑成型技术制备不同发泡剂的微发泡聚丙烯(Polypropylene,PP)复合材料,研究了PP材料中添加AC母粒(Azodicarbonamide,AC)、AC粉和微球母粒3种不同发泡剂对微发泡PP材料发泡质量和表面质量的影响。结果表明:不同特性的发泡剂添加到PP材料中进行发泡后,对发泡质量有较明显的影响; PP材料中添加AC母粒发泡质量最好,泡孔平均直径较小,为35. 8μm,泡孔个数较多,泡孔尺寸分布均匀。表面质量也存在明显的影响,PP材料中添加微球母粒(Na HCO3母粒)后,表面无明显的气痕和凹坑,表面光泽度最大,表面质量较理想。综合发泡质量和表面质量的影响因素,微球母粒适合于微发泡聚丙烯制品的发泡。The micro-foamed polypropylene(PP)composites with different foaming agents were prepared by chemical foam injection molding technology.The effects of different foaming agents on the foaming quality and surface quality of micro-foamed PP materials were studied.The results showed that the foaming agent with different characteristics had a significant effect on the foaming quality of micro-foamed PP composites.The PP masterbatch had the best foaming quality and the average cell diameter with 35.8μm.The surface quality also had obvious influence by adding different foaming agents.Micro-foamed PP composites of adding the microsphere masterbatch were no obvious gas marks and pits on the surface.The surface gloss was the largest,and the surface quality was ideal.According to the factors affecting the foaming quality and surface quality,the microsphere masterbatch was suitable for micro-foamed polypropylene products.

关 键 词：发泡剂 聚丙烯 发泡质量 表面质量 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]