中文摘要：

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．

英文摘要：

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.