交联发泡体系对LDPE泡沫材料性能与泡孔结构的影响  

Effect of cross-linked foam system on the performance and cell structure of LDPE foam material

作　　者：朱云[1] 王晓鹏[1] 冯钠[1] 张桂霞[1] 李季[1] 霍阳[1] 

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《橡塑技术与装备》2015年第18期43-49,共7页China Rubber/Plastics Technology and Equipment

基　　金：2014年辽宁省大学生创新创业训练计划项目

摘　　要：本论文以模压法制备LDPE泡沫材料,采用DSC分析了LDPE泡沫材料交联体系和发泡体系的特征温度;研究了交联体系和发泡体系对LDPE泡沫材料表观密度与力学性能的影响;采用SEM及Nano-measure分析了泡孔微观结构及尺寸。研究表明,当交联剂DCP用量为2 phr、主发泡剂AC用量为2 phr、发泡温度为180℃时,LDPE泡沫材料的综合性能最佳,其表观密度为0.479 g·cm-3,拉伸强度为3.88 MPa,比强度为14.82 MPa·m3·g-1;同时,LDPE泡沫材料泡孔细密且均匀。In this paper,molding method is used for preparing LDPE foam material. The paper analyzes the characteristic temperature of LDPE foam crosslinking system and foaming system by DSC; studies the impact of cross-linking and foaming system on the apparent density and mechanical properties of LDPE foam material; analyzes microscopic cell structure and size by SEM and Nano-measure. The research shows that,when cross-linking agent DCP is 2 phr,main foaming agent AC is 2 phr,and foaming temperature is 180 ℃,the overall performance of LDPE foam material is the best,its apparent density is 0.479 g·cm-3,the tensile strength is 3.88 MPa,the specific strength is 14.82 MPa·m3·g-1; Meanwhile,cells of LDPE foam material are fine and uniform.

关 键 词：泡沫材料 低密度聚乙烯 交联发泡体系 泡孔结构 

分 类 号：TQ328[化学工程—合成树脂塑料工业]