林业科学2012，Vol.48Issue(11)：69-75,7.
填充型和液化改性型木质素基聚氨酯泡沫的性能比较
Comparison of Properties of Lignin-Based Polyurethane Foams Prepared by Blending and Liquefaction Modification Methods
摘要
Abstract
Corn stalk enzymatic lignin-based polyurethane foams were prepared by two methods; blending and liquefaction modification. The structure of lignin-based polyurethane foam was characterized by Fourier infrared spectroscopy ( FTIR). The effect of the two types of preparation methods on physical characteristics and dynamic mechanical property of lignin-based polyurethane foams were determined by compression test and dynamic mechanical analysis( DMA) , respectively. The result showed that the density of polyurethane foams from liquefaction modification method was lower than those from blending method. The gel content and compressive strength of polyurethane foams based on liquefaction product were higher than those from blending method. The maximal compressive strength of polyurethane foam reached 291 kPa when the substitution of liquefaction products up to 30% based on the total polyol. When the substitution for polyol was lower than 30% , the glass transition temperature of the polyurethane foams from liquefaction method was higher than those from blending method.关键词
木质素/液化/聚氨酯泡沫/填充Key words
lignin/ liquefaction/ polyurethane foam/ blending分类
化学化工引用本文复制引用
李燕,韩雁明,秦特夫,储富祥..填充型和液化改性型木质素基聚氨酯泡沫的性能比较[J].林业科学,2012,48(11):69-75,7.基金项目
国家自然科学基金(NSFC31000274) （NSFC31000274）
中央级公益性科研院所基本科研业务费专项资金资助项目(CAFINT2009K06). （CAFINT2009K06）
