LDPE/nano-CaCO_3复合发泡材料的制备工艺与性能研究  

Research on Preparation Technology and Performance of LDPE/ nano-CaCO_3 Foam Composites

作　　者：杨学莉[1] 张廷[1] 孙彤[1] 孙云贞[1] 宋红博[1] 李红媛[1] 张秀成[1] 

机构地区：[1]东北林业大学理学院,黑龙江哈尔滨150040

出　　处：《塑料科技》2012年第6期27-31,共5页Plastics Science and Technology

基　　金：东北林业大学国家级大学生创新训练项目资助(No.1110225023)

摘　　要：采用模压发泡法制备了低密度聚乙烯/纳米碳酸钙(LDPE/nano-CaCO3)复合发泡材料。研究不同含量的nano-CaCO3、发泡剂AC、交联剂DCP等对LDPE/nano-CaCO3力学性能及发泡效果的影响,确定了最佳工艺路线。结果表明:随着nano-CaCO3用量的增加,LDPE/nano-CaCO3复合发泡材料拉伸强度和表观密度逐渐增大,发泡倍率逐渐减小。当nano-CaCO3用量为30%,AC用量为9%～11%,DCP用量为0.08%时,发泡材料的综合性能最佳。热重分析表明:加入nano-CaCO3后,LDPE发泡材料的热稳定性得到提高。LDPE/nano-CaCO3 foam composites were prepared through molded foam method. The effects of different contents of nano-CaCO3, blowing agent AC, and cross linking agent DCP on the mechanical properties and foaming effect of LDPE/nano-CaCO3 foam composites were studied. The results show that： with the increase of nano-CaCO3 contents, the tensile strength and apparent density of the foaming composites increase gradually, but the foaming ratio decreases gradually. When the contents of nano-CaCO3, AC, and DCP are 30%, 9%-11%, and 0.08% respectively, the comprehensive performances of foam composites are optimal. The thermogravimetric analysis indicates that the thermal stability of LDPE foaming composite improves with the addition of nano-CaCO3.

关 键 词：低密度聚乙烯 纳米碳酸钙 发泡材料 化学交联 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]