文献类型：期刊文献

中文题名：高温中和高温后LVL木纤维复合材的抗弯性能

英文题名：Bending properties of LVL wood composite at and after exposure to high temperature

作者：钟永[1,2] 周海宾[1]

第一作者：钟永

通信作者：Zhou, Hai-Bin

机构：[1]中国林业科学研究院木材工业研究所;[2]国家林业局木材科学与技术重点实验室

年份：2014

卷号：45

期号：B12

起止页码：59-63

中文期刊名：功能材料

外文期刊名：Journal of Functional Materials

收录：CSTPCD;;EI(收录号：20151300692314);Scopus(收录号：2-s2.0-84925650565);北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：中央级公益性科研院所基本科研业务费专项基金资助项目(CAFINT2012C01);"十二五"国家科技支撑计划资助项目(2012BAD23B01)

语种：中文

中文关键词：LVL木纤维复合材;高温;抗弯强度;弹性模量

外文关键词：LVL wood composite; high temperature; bending strength; modulus of elasticity

分类号：TB332

摘要：为研究LVL木纤维复合材在高温中和高温后的抗弯性能，对104个试样进行了温度在20～225℃下的三点静态抗弯测试。研究结果表明，随着温度的升高，高温中和高温后的抗弯强度、抗弯弹性模量、延性系数均明显减小；相对于高温中的试样，高温后的抗弯强度和抗弯弹性模量均明显较高，而延性系数则较低。根据回归分析，提出了LVL在高温中和高温后的抗弯强度与温度的关系模型，该模型预测结果与实测值吻合良好。
Abstract. Static 3-point bending tests, with a total of 104 specimens, were carried out to study the bending prop- erties of LVL wood composite at and after exposure to high temperature in the range from 20 to 225℃. The test results show that the bending strength （MOR）, modulus of elasticity （MOE） and ductility coefficient （μ） of LVL wood composite at and after exposure to high temperature decrease with the increase of the temperature. However, except for the μ, both the MOR and MOE of LVL wood composite at exposure to high temperature are lower than that after exposure to high temperature. A statistical regression-based model, as a function of thermal exposure temperature, was developed and evaluated for predicted the strength loss of LVL wood com- posite. The predicted theoretical results were consistent with the observed values.