微波条件下杨木多元醇液化工艺及其产物的物性

朱显超; 李改云; 秦特夫

doi:10.19455/j.mcgy.2014.01.007

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微波条件下杨木多元醇液化工艺及其产物的物性
Polyhydric Alcohol Liquefaction Process of Poplar Using Microwave Heating and Product Properties
1. 中国林科院木材工业研究所
2014年28卷第1期页码：18-22
DOI： 10.19455/j.mcgy.2014.01.007

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[1]朱显超,李改云,秦特夫.微波条件下杨木多元醇液化工艺及其产物的物性[J].木材工业,2014,28(01):18-22.

ZHU Xian-chao, LI Gai-yun, QIN Te-fu. Polyhydric Alcohol Liquefaction Process of Poplar Using Microwave Heating and Product Properties[J]. China Wood Industry, 2014,28(1):18-22.
[1]朱显超,李改云,秦特夫.微波条件下杨木多元醇液化工艺及其产物的物性[J].木材工业,2014,28(01):18-22. DOI： 10.19455/j.mcgy.2014.01.007.

ZHU Xian-chao, LI Gai-yun, QIN Te-fu. Polyhydric Alcohol Liquefaction Process of Poplar Using Microwave Heating and Product Properties[J]. China Wood Industry, 2014,28(1):18-22. DOI： 10.19455/j.mcgy.2014.01.007.

摘要

微波加热条件下,采用酸性聚乙二醇和丙三醇混合溶剂进行杨木液化,并利用液化产物和4,4′-二苯基甲烷二异氰酸酯制备液化木基聚氨酯泡沫。结果表明,利用微波加热技术可以快速制备性能良好的木材多元醇液化产物;适宜的液化工艺条件为:木粉含水率4.7%,微波功率500W,液固比2.5,液化时间15min;液化木基聚氨酯泡沫的表观密度和压缩强度分别为0.038g/cm3和68kPa。

Abstract

Poplar was liquefied using the mixed solvents of PEG 400/glycerol catalyzed by sulfuric acid under microwave heating,and liquefied wood-based polyurethane foams（PU）were prepared from the liquefied wood products and 4,4′-methylene-diphenylene isocyanate.The results indicate that microwave heating is a promising effective alternative method for traditional heating in wood polyhydric alcohol liquefaction.The optimal conditions for microwave-assisted liquefaction of poplar wood with polyhydric alcohols are as follows:moisture content 4.7%,microwave power 500 W, polyol to wood ratio 2.5,liquefaction time 15 min.The liquefied wood-based PU foams showed apparent density of 0.038g/cm3 and compressive strength of 68kPa respectively.