汽车用汉麻秆粉/聚乳酸复合材料的制备、成型工艺及性能  

Preparation,processing and properties of hemp stalk powder/polylactic acid composites for automobiles

作　　者：王春红[1,2] 王利剑[1] 左恒峰 王妮[1] Noor Intan Saffinaz Anuar Peyman Servati Frank Ko WANG Chunhong;WANG Lijian;ZUO Hengfeng;WANG Ni;Noor Intan Saffinaz Anuar;Peyman Servati;Frank Ko(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;State Key Laboratory of Automotive Safety and Energy,Tsinghua University,Beijing 100084,China;Bioresources and Biorefinery Laboratory,Faculty of Science and Technology,Universiti Kebangsaan Malaysia,UKM Bangi,Selangor,43600,Malaysia;Department of Electrical and Computer Engineering,University of British Columbia,Vancouver,BC V6T 1Z4,Canada;Materials Engineering Department,University of British Columbia,Vancouver,BC V6T 1Z4,Canada)

机构地区：[1]天津工业大学纺织科学与工程学院,中国天津300387 [2]清华大学汽车安全与节能国家重点实验室,中国北京100084 [3]马来西亚科邦萨大学科学技术学院生物资源和生物精炼实验室,马来西亚乌克姆邦吉43600 [4]不列颠哥伦比亚大学电气与计算机工程系,加拿大温哥华BC V6T 1Z4 [5]不列颠哥伦比亚大学材料工程系,加拿大温哥华BC V6T 1Z4

出　　处：《汽车安全与节能学报》2019年第4期511-517,共7页Journal of Automotive Safety and Energy

基　　金：国家自然科学基金资助项目(11802205);汽车安全与节能国家重点实验室开放基金资助项目(FK1811)

摘　　要：为有利于汽车轻量化和环境保护,制备了一种汽车内饰用的完全可降解的木塑复合材料。以汉麻秆粉和可降解聚乳酸(PLA)为原料,通过双螺杆挤出机造粒,模压成型制备了该复合材料。对于温度、压力和时间3个影响因素,经过4种力学性能指标的正交试验分析,得到模压成型的最优工艺为:160℃、7.5 MPa、5 min。结果表明:当汉麻秆粉质量分数30%,麻秆粉粒径40目时,该复合材料的力学性能拉伸强度、弯曲强度、拉伸模量、弯曲模量均最大,分别为40.26、73.84 MPa和2.06、4.35 GPa。A fully degradable wood-plastic composite material was prepared for automotive interiors to reduce the mass of automobiles and protect the environment.The composite was prepared from hemp stalk powder and degradable polylactic acid(PLA)by using a twin-screw extruder for pelletization and compression molding.An optimal process for press molding was obtained:160℃,7.5 MPa,5 min for the three influencing factors of temperature,pressure,and time,after orthogonal test analysis of 4 mechanical performance indicators.The results show that the composite has its highest mechanical properties in tensile strength,bending strength,tensile modulus and bending modulus,which are 40.26,73.84 MPa and 2.06,4.35 GPa for the hemp stalk powder with a mass fraction of 30%and a diameter of 40 mesh.

关 键 词：汽车轻量化 内饰材料 可降解木塑复合材料 聚乳酸(PLA) 汉麻秆粉 模压成型工艺 

分 类 号：TQ321.5[化学工程—合成树脂塑料工业]