己内酯改性木质素填充间规聚丙烯复合材料制备及其性能研究  

Preparation and Properties of Caprolactone-modified Lignin Filled Syndiotactic Polypropylene Composites

作　　者：李佩瑛 程睿智 夏先荣 苏胜培[1,2] 钟龙兴 陈朝彬 熊耀奇 LI Pei-ying;CHENG Rui-zhi;XIA Xian-rong;SU Sheng-pei;ZHONG Long-xing;CHEN Chao-bing;XIONG Yao-qi(College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410081,China;National&Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources,Changsha 410081,China;Hunan Liansu Technology Industrial Co.,Ltd.,Ningxiang 410600,China)

机构地区：[1]湖南师范大学化学化工学院,湖南长沙410081 [2]石化新材料与资源精细利用国家地方联合工程实验室,湖南长沙410081 [3]湖南联塑科技实业有限公司,湖南宁乡410600

出　　处：《精细化工中间体》2023年第6期52-59,共8页Fine Chemical Intermediates

摘　　要：利用己内酯与木质素反应制备了改性木质素填料,并将改性木质素与间规聚丙烯(sPP)共混制备了填充sPP复合材料。研究了sPP复合材料的力学性能、流动性和热稳定性。实验结果表明:当己内酯改性木质素添加量为10份时,复合材料拉伸强度达19.3 MPa,为同等添加量木质素填充sPP复合材料的1.4倍;冲击强度达32.1 KJ/m^(2),为同等添加量木质素填充sPP复合材料的2.0倍。在添加份数为20份以内,复合材料热稳定性增加。经己内酯改性后的木质素在聚丙烯中添加比例可达1∶1,为木质素大量填充高分子材料提供了一条新思路。The modified lignin prepared by the reaction of caprolactone with lignin was blended with syndiotactic polypropylene(sPP)to prepare the sPP flled composite materials.The mechanical properties,fluidity and thermal stability of sPP composites were evaluated.The results showed that when the dosage of caprolactone modified lignin was 10 phr,the tensile strength of the composite reached 19.3 MPa,which was 1.4 times of the lignin-filled sPP composite material with the same amount of lignin,The impact strength was 32.1 KJ/m^(2),which was 2.0 times of that of lignin-filled sPP composite material.The thermal stability of the composite materials increased when the dosage of components was less than 20 phr.The addition ratio of lignin modified by caprolactone to polypropylene could reach to 1:1,providing a new approach for the large-scale filling of lignin in polymer materials.

关 键 词：木质素 填料 己内酯 聚丙烯复合材料 

分 类 号：R943[医药卫生—药剂学]