【摘 要】
：
木材经高温热处理后在尺寸稳定性、耐久性得到一定程度提高的同时,木材的颜色会逐渐变为浅褐色、深褐色甚至黑色,接近于红木及一些深色名贵木材的颜色,因此可以采用此方法来仿生红木及名贵木材颜色,这不仅可以提高木材的附加值,而且为美化木材表面颜色提出一种新思路.本研究在真空条件下,热处理温度为160℃、180℃、200℃,热处理时间为2h、4h、6h下对云南省常用材思茅松(Pinus kesiya var.
【机 构】
：
西南林业大学材料工程学院 云南昆明650224 中国林科院木材工业研究所 北京100091
【出 处】
：
中国林学会木材料学分会第十四次学术研讨会
论文部分内容阅读
木材经高温热处理后在尺寸稳定性、耐久性得到一定程度提高的同时,木材的颜色会逐渐变为浅褐色、深褐色甚至黑色,接近于红木及一些深色名贵木材的颜色,因此可以采用此方法来仿生红木及名贵木材颜色,这不仅可以提高木材的附加值,而且为美化木材表面颜色提出一种新思路.本研究在真空条件下,热处理温度为160℃、180℃、200℃,热处理时间为2h、4h、6h下对云南省常用材思茅松(Pinus kesiya var.lang bianensis)木材进行高温热处理,采用CIE L*a*b*法对热处理前后思茅松木材的颜色参数值进行测定,从而分析真空条件下高温热处理对思茅松木材颜色的影响；另外以失重率作为木材高温热处理强度损失因子,研究在真空高温热处理前后木材质量损失情况.研究结果表明：(1)热处理后思茅松木材颜色发生明显变化,木材表面颜色加深,随着热处理温度升高和处理时间的增加,木材明度L*下降,红绿色品指数a*和黄蓝色品指数b*随热处理强度的增加而增加,△L*和色差△E*增大.(2)在真空条件下,木材失重率随处理温度的升高和处理时间的增加而增加,但质量损失率较低.
其他文献
Plant growth and development is severely limited by abioticstresses, such as drought, salt, and cold.CBFs are the critical transcription regulators of gene expression in stress signal transduction, wi
We have developed photosynthetically efficient transgenic turfgrasses through transformation of a hyperactive mutant (Serine 599 Alanine, S599A) of oat phytochrome A in zoysia grass (Zoysia japonica)
Plant myrosinase is a class of β-thioglucoside glucohydrolases that hydrolyze glucosinolates in cruciferous plants.This class of enzyme was classified into two subclasses Myr Ⅰ and Myr Ⅱ.
Phosphate (Pi) transporters mediate acquisition and transportation of Pi within plants.Here, we investigated the functions of OsPht1;4 (OsPT4), one of the 13 members of the Pht1 family in rice.
Phosphorus (P), an essential macronutrient, is often limiting and triggers an array of responses (Raghothama 1999;Chiou and Lin 2011).Inhibition of primary root growth (PRG) is a typical response to.p
Previous studies have reported that the expression of phosphate or nitrogen transporter genes in roots of plants could be regulated by arbuscular mycorrhizal (AM) fungi, but little is known whether th
Potassium (K) absorption and translocation in plants rely on multiple K transporters for adapting varied K supply and saline conditions.Here, we report the expression patterns and physiological roles
Anthracnose caused by Colletotrichum spp.leads to a large-scale strawberry (Fragaria ×ananassa Duchesne) loss in quality and production worldwide.Little is known about the mechanisms underlying the ge
Industrial hemp fiber is a widely used natural fiber and it was planted widely in the world while the hemp stalk xylem is the byproduct of hemp fiber and it was not used well now.To use the hemp stalk
木材颜色是反映木材表面视觉和心理感觉最为重要的特征.红木及一些深色名贵木材具有其独特的颜色，紫檀木类为红紫色，花梨木类、香枝木类及红酸枝木类为红褐色，黑酸枝木类为黑紫色，乌木类、条纹乌木类和鸡翅木类主要为黑色，由于其独特的漂亮的颜色，越来越倍受人们的喜爱.但随着红木及一些深色名贵木材数量的减少，人们开始采用物理(高温热处理)或化学(染色)的方法来改变木材的颜色，使其接近红木和一些深色名贵木材，从而