气凝胶结构木材的形成  

Formation of Aerogel-type Wood

作　　者：李坚[1] 王成毓[1] 翟相林[1] 

机构地区：[1]生物质材料科学与技术教育部重点实验室(东北林业大学),哈尔滨150040

出　　处：《东北林业大学学报》2008年第11期1-2,28,共3页Journal of Northeast Forestry University

基　　金：国家自然科学基金重点项目(30630052)

摘　　要：为了解决普通气凝胶在实际应用方面存在的一些缺陷,同时赋予木材新的功能,使木材功能性改良体现木材和纳米材料的双重优点,并强化气凝胶结构木材的智能效应和环境学特性,使用氢氧化钠溶液、氨水、双氧水、双氧水和水合肼相配合、双氧水和氨水相配合以及水分别对木材进行了改性处理,并对用水处理过的试材进行了爆破膨化处理。结果证明:对木材进行改性处理,可以达到减小其密度、增大体积、改变结构的目的,使木材试件向气凝胶型材料方向转变。The main purpose of the study is to solve some defects of coannon aerogels in practical applications and endue wood with new functions as well as to make the wood have the advantages of both wood and nanomaterial and strengthen the environmentel characteristics of aerogel-type wood. In the experimental process, sodium hydroxide, ammonia and hydrogen peroxide, hydrogen peroxide combined with hydrazine hydrate, hydrogen peroxide combined with ammonia, and water were used to modify wood respectively, and explosion treatment of the experimental wood treated with water was also made. Results showed that the purpose of reducing density, increasing volume and changing structure for the wood could be achieved.

关 键 词：木材 木材改性 气凝胶 超临界干燥 

分 类 号：S781[农业科学—木材科学与技术]