不同溶剂抽提对杉木声学振动性能的影响  

Effect of Different Extraction on Sound Vibration Properties of Chinese Fir

作　　者：武亚峰[1] 黄文娟[1] 赵紫剑[1] 何正斌[1] 伊松林[1] WU Ya-feng HUANG Wen-juan ZHAO Zi-jian HE Zheng-bin YI Song＇lin(College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China)

机构地区：[1]北京林业大学材料科学与技术学院

出　　处：《林产工业》2017年第3期21-25,共5页China Forest Products Industry

基　　金：林业公益性行业科研专项经费资助(201404502)

摘　　要：为研究不同溶剂抽提对杉木声学振动性能的影响,分别用苯醇、二氯甲烷和冷水对杉木试件进行固体抽提处理并对抽提物化学成分进行检测分析。研究发现:冷水抽提后,杉木的比动弹性模量平均降低了1.25%,对数衰减系数平均提高了4.28%,而二氯甲烷和苯醇抽提后,杉木的比动弹性模量分别平均提高了2.91%和5.59%,对数衰减系数分别平均降低了13.05%和13.73%。分析抽提物成分发现,萜烯类化合物抑制了杉木声学振动性能的提高,烃类等抽提物的存在则有利于提高杉木的声学振动性能。In order to study the effect of different extraction on sound vibration properties of Chinese fir[Cunninghamia lanceolata（Lamb.）Hook.],authors of this paper carry out solid extraction processing for Chinese fir by respectively using benzene-ethanol,dichloromethane and cold water,and test and analyze the extract chemical composition.Results show that：the average specific Young＇s modulus decreases by 1.25%after extraction with cold water,logarithmic decrement coefficients increases 4.28%after extraction with cold water,the average specific Young＇s modulus respectively increases 2.91%and 5.59%after extraction with dichloromethane and benzene-ethanol,logarithmic decrement coefficients respectively decreases by 13.05%and 13.73%after extraction with dichloromethane and benzene-ethanol.Through the analysis of extract components,it is found that terpenoid compounds contribute the decrease of vibration properties of Chinese fir,but hydrocarbon contributes the improvement of vibration properties of Chinese fir.

关 键 词：抽提 杉木 振动性能 GC-MS 

分 类 号：S781.38[农业科学—木材科学与技术]