杉木积成材的动态热机械分析  

Dynamic mechanical analysis for Chinese fir oriented laminated stick lumber

作　　者：杜春贵[1] 刘志坤[1] 张宏[1] 张齐生[1] 

机构地区：[1]浙江林学院工程学院,浙江临安311300

出　　处：《南京林业大学学报（自然科学版）》2009年第4期117-120,共4页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：浙江省自然科学基金资助项目(Y304029);浙江省"十五"攻关重点项目(011102164);国家和浙江省农业科技成果转化资助项目(03EFN213300104;2003D70078)

摘　　要：采用动态热机械分析(DMA)研究了杉木积成材(OLSL)及其构成单元——杉木木束条的动态力学性能。结果表明:杉木木束条和杉木积成材的储能模量(E′)随着温度的升高而迅速下降,而损耗模量(E″)和损耗角正切却随着温度的升高而迅速上升;杉木木束条制成杉木积成材后其储能模量下降;杉木木束条和杉木积成材的玻璃化转变温度分别为95、80℃。动态热机械分析可为优化杉木积成材的制造工艺提供依据。The dynamic mechanical properties of Chinese fir oriented laminated stick lumber （OLSL） and its constitution unit--Chinese fir wood stick were examined by dynamic mechanical analysis. The results showed that the storage modulus （E′） of Chinese fir wood stick and OLSL rapidly decreased with experimental temperatures increasing, but their loss tangent delta and loss modulus （E＂） rapidly increased; the storage modulus（E″）of wood sick was reduce after it making into Chinese fir OLSL; and their glass transition temperature were 95℃ and 80℃ , respectively.

关 键 词：杉木积成材 木束条 制材板皮 动态热机械分析 动态力学性能 

分 类 号：TS653.5[轻工技术与工程]