以乙酸木素和二次纤维为原料制备聚氨酯复合材料  

Polyurethane composite made from acetic acid lignin and secondary fiber

作　　者：马晓娟[1] 陈礼辉[1] 敖日格勒[2] 曹石林[1] 黄六莲[1] 

机构地区：[1]福建农林大学材料工程学院,福建福州350002 [2]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《福建农林大学学报（自然科学版）》2009年第4期420-423,共4页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：国家自然科学基金(30671637);福建省自然科学基金(2007J0356)资助项目

摘　　要：以乙酸木素、二次纤维为原料添加异氰酸酯及聚乙二醇400,制备聚氨酯纸基复合材料.聚氨酯处理使纸张纤维间的氢键连接转变为共价键连接,从而使复合材料的抗张强度、环压强度、抗水性质均有很大程度提高;并且,随着预聚体中乙酸木素含量的提高,复合材料的强度指标均先上升后下降,吸水率先降低后提高.A kind of new material derived from polyurethanes was made from acetic acid lignin and secondary fiber using 2,4-toluene diisocyanate and polyethylene glycol 400 as reactant. The treatment changed the hydrogen bond among cellulose into covalent bond, as a result, the tensile strength, ring crush strength and water resistance of the composite improved. The tensile strength and ring crush strength of the composite first increased and then decreased, while water absorption rate of the composite first decreased and later increased with the increase of AAL content in the prepolymer.

关 键 词：二次纤维 乙酸木素 聚氨酯复合材料 

分 类 号：TS762.7[轻工技术与工程—制浆造纸工程]