Physical properties of moldings from liquefied wood resins

被引：0

作者：

Lin, Lianzhen ^{[1
]}

Yoshioka, Mariko ^{[1
]}

Yao, Yaoguang ^{[1
]}

Shiraishi, Nobuo ^{[1
]}

机构：

[1] Kyoto Univ, Kyoto, Japan

来源：

Journal of Applied Polymer Science | 1995年 / 55卷 / 11期

关键词：

Compatibility - Flexural properties - Hexamines - Hydrophilicity - Liquefied wood resins;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The liquefied wood resins obtained by liquefying wood in the presence of phenol using phosphoric acid as a catalyst were used to prepare the moldings by using hexamine as a hardener. A study on the effects of the molding conditions and the moldings' compositions on flexural properties and water-sorption kinetics of the moldings showed that the liquefied wood resins had satisfactory and almost uniform curing reactivity, although composed of different kinds of wood components. The flexural properties of the liquefied wood moldings were enhanced with an increase in the amount of combined phenol within the liquefied wood and comparable to those of the commercial novolak when the amounts of combined phenol were larger than 75%. Water-sorption measurements and the SEM observations of the moldings indicated that the liquefied wood resins had much greater hydrophilicity than that of the novolak and revealed a greater compatibility with wood fillers.

引用

页码：1563 / 1571