GEBMA对聚乳酸/碳酸钙复合材料性能的影响  

Effect of GEBMA on the Properties of PLA/CaCO3 Composites

作　　者：王文玲 边俊甲[2] 颜祥禹 肖洋 李义 WANG Wen-ling;BIAN Jun-jia;YAN Xiang-yu;XIAO Yang;Li Yi(Jilin COFCO Biochemical Co.,Ltd.,Changchun Jilin 130033,China;Changchun Institute of Applied Chemistry,Chinese Academy of Science,Changchun Jilin 130022,China))

机构地区：[1]吉林中粮生化有限公司,吉林长春130033 [2]中国科学院长春应用化学研究所生态环境高分子材料重点实验室,吉林长春130022

出　　处：《当代化工》2022年第12期2878-2882,共5页Contemporary Chemical Industry

基　　金：吉林省科技发展计划项目,高性能聚羟基脂肪酸酯制备关键技术及应用开发(项目编号:20220201107GX)。

摘　　要：采用乙烯/甲基丙烯酸丁酯/甲基丙烯酸缩水甘油酯三元共聚物(KT-20)对聚乳酸(PLA)/碳酸钙(CaCO_(3))复合材料进行熔融共混改性,并在室温下通过冷压方法制成不同厚度的薄片,采用力学性能、差示扫描量热、流变性能等测试方法,研究了KT-20对PLA/CaCO_(3)复合材料的影响。结果表明:KT-20的加入使PLA/CaCO_(3)复合材料冲击强度提高,拉伸强度降低,限制了冷结晶,提高了亮相界面的结合强度,断裂行为从脆性断裂变为热性断裂,对热性能没有影响。Polylactic acid(PLA)/calcium carbonate(CaCO_(3)) composite was modified by ethylene butyl methacrylate glycidyl methacrylate terpolymer(KT-20), sheets of different thicknesses were prepared by cold pressing at room temperature. The effects of KT-20 on PLA/CaCO_(3)composites were investigated using a series of tests such as mechanical properties, differential scanning calorimetry and rheological properties. The results showed that the addition of KT-20 increased the impact strength of PLA/CaCO_(3)composites, tensile strength reduction, the cold crystallization was limited, the bonding strength of the exposed interface was improved, and the fracture behavior changed from brittle fracture to thermal fracture, which had no effect on the thermal performance.

关 键 词：聚乳酸 碳酸钙 乙烯/甲基丙烯酸丁酯/甲基丙烯酸缩水甘油酯三元共聚物 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]