改性大麻纤维/不饱和聚酯复合材料的力学性能及界面表征  

Mechanical Properties and Interface Characterization of Modified-Hemp-Fiber Reinforced Unsaturated Polyester Composites

作　　者：陈婷婷[1] 刘文地[1] 邱仁辉[1] 温晓芸[1] 

机构地区：[1]福建农林大学材料工程学院,福建福州350002

出　　处：《高分子材料科学与工程》2013年第9期94-97,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(31070495);教育部留学回国人员启动基金(jyblxjj03);福建省自然科学基金资助(2011J01282)

摘　　要：采用模压成型方法制备大麻纤维/不饱和聚酯复合材料,用六亚甲基二异氰酸酯(DIH)与丙烯酸羟乙酯(HEA)对纤维进行表面处理。结果表明,纤维改性后复合材料的拉伸强度、弯曲强度及弯曲模量均有显著提高;当DIH-HEA用量为纤维干质量的3%时,复合材料的总体力学性能最佳。复合材料拉伸断面扫描电镜(SEM)显示,纤维表面处理改善了纤维与树脂间的界面结合。改性纤维的红外光谱(FT-IR)和X射线光电子能谱(XPS)分析表明,DIH-HEA混合物与纤维表面羟基产生共价键结合。Hemp fibers reinforced unsaturated polyester （UPE） composites were prepared by compression moulding. Hemp fibers were treated with 1,6-diisocyanatohexane （DIH） and 2-hydroxyethyl acrylate （HEA）. The results indicate that the tensile strength, flexural strength and flexural modulus of the fibers modified composites increase. When the dosage of DIH-HEA is 3% of the dry mass of the fiber, the tensile strength, flexural strength and flexural modulus of the reinforced composites are the best. SEM photos of the fractured surface of hemp/UPE composites reveal that treatment of hemp fibers with the combination of DIH and HEA greatly improves the interfaeial adhesion between hemp fibers and UPE resins. FT-IR and XPS analysis of treated fibers indicate that DIH and HEA are eovalently bonded to hemp fibers.

关 键 词：大麻纤维 不饱和聚酯 力学性能 六亚甲基二异氰酸酯 丙烯酸羟乙酯 

分 类 号：TB332[一般工业技术—材料科学与工程]