LDPE-g-GMA增容LDPE/木质素复合泡沫材料研究  

Compatibilizing Effect of LDPE-g-GMA on LDPE/Lignin Foam Composites

作　　者：李季[1] 冯钠[1] 杨亮[1] 王晓鹏[1] 王达[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：《现代塑料加工应用》2015年第2期13-16,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金(21276034)资助

摘　　要：以低密度聚乙烯(LDPE)为基体树脂,木质素为填料,LDPE接枝甲基丙烯酸缩水甘油酯(LDPE-g-GMA)为增容剂,辅以发泡剂和交联剂,制备LDPE/木质素复合发泡材料,考察了LDPE-g-GMA及其用量对泡沫材料性能的影响,并分析了泡沫材料的微观形态。结果表明:LDPE-g-GMA可以有效降低LDPE/木质素复合泡沫材料的表观密度,使泡沫材料泡孔均匀细密;随着LDPE-g-GMA用量的增加,LDPE/偶联剂处理木质素(M-木质素)复合泡沫材料泡孔的平均直径先增大后减小,LDPE-g-GMA的用量存在最佳值,当用量为4份时,比强度达到10.96 MPa/(g·cm-3),表观密度为0.533g/cm3。Low density polyethylene （LDPE）/lignin foam composites were prepared by using LDPE as basic materials, lignin as filler, LDPE-g-GMA as compatibilizer, and combining with foaming agent and cross-linker. The effects of LDPE-g-GMA and its amount on the properties of LDPE/lignin foam composites were investigated, and the morphology of foam material was analyzed. The results show that LDPE-g-GMA can effectively reduce the apparent density of LDPE/lignin foam composites and the foam cells are in uniform distribution; The cell average diameter of LDPE/M-lignin foam composites increases first and then decreases with the increasing of LDPE-g-GMA content. There exists the optimal amount of LDPE-g-GMA. When the amount is 4 phr, the specific strength of the foam composites is 10.96 MPa/（g·cm^-3）, the apparent density is 0. 533 g/cm^3.

关 键 词：低密度聚乙烯 甲基丙烯酸缩水甘油酯 增容 木质素 泡沫材料 

分 类 号：TQ328[化学工程—合成树脂塑料工业]