PLA/PPC/CS复合材料的制备工艺  

Preparation process of PLA/PPC/CS composite materials

作　　者：赵梓函 孟令宇 李祥瑞 李春风[1] 刘明利[1] ZHAO Zihan;MENG Lingyu;LI Xiangrui;LI Chunfeng;LIU Mingli(College of Materials Science and Engineering,Beihua University,Jilin 132013,China;Institute of Forestry Resources Utilization,Jilin Academy of Forestry,Changchun 130117,China)

机构地区：[1]北华大学材料科学与工程学院,吉林吉林132013 [2]吉林省林业科学研究院林业资源利用研究所,吉林长春130117

出　　处：《河北大学学报（自然科学版）》2024年第5期513-520,共8页Journal of Hebei University(Natural Science Edition)

基　　金：吉林省创新创业人才项目(2023QN44);吉林省重点科技攻关项目(20220202095NC;20230202092NC);吉林省科技发展创新平台(基地)和人才专项(20220508119RC;20240601038RC);吉林省预算内基本建设资金(创新能力建设)项目(2022C039-4)。

摘　　要：通过在聚乳酸(PLA)/玉米秸秆(CS)复合材料中引入聚碳酸亚丙酯(PPC)改善韧性,使用熔融挤出与热压成型相结合的方式制备聚乳酸/聚碳酸亚丙酯/玉米秸秆(PLA/PPC/CS)复合材料,以热压时间、热压压力和热压温度为变量,以PLA/PPC/CS复合材料的冲击、弯曲和拉伸性能为评价指标设计单因素试验.试验结果表明,热压时间、热压压力、热压温度对PLA/PPC/CS复合材料的力学性能影响显著.最终优化出的热压工艺条件为热压时间10 min,热压压力7.5 MPa,热压温度190℃.To improve the toughness of the PLA/corn stalk composite,the introduction of polypropylene carbonate(PPC)was used.The PLA/PPC/corn stalk(PLA/PPC/CS)composite was prepared using a combination of melt extrusion and hot pressing.A single factor experiment was designed with hot pressing time,hot pressing pressure,and hot pressing temperature as variables,and the impact,bending,and tensile properties of the PLA/PPC/CS composite as evaluation indicators.The results showed that the hot pressing time,hot pressing pressure,and hot pressing temperature had significant effects on the mechanical properties of PLA/PPC/CS composites.The final optimized hot pressing process is:hot pressing time is 10 min,hot pressing pressure is 7.5 MPa,and hot pressing temperature is 190℃.

关 键 词：木塑复合材料 聚乳酸 聚碳酸亚丙酯 热压工艺 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]