文档介绍：热处理对慈竹重组材性能的影响
程大莉,蒋身学
(南京林业大学,南京 210037)
摘要:本文以丛生竹类的慈竹竹篾为原料,运用不同的热处理温度对其进行高温热处理并压制慈竹重组材,对热处理前后慈竹的化学组分进行分析,并对慈竹重组材的物理力学性能进行测定,研究结果表明,当热处理温度从190℃上升至210℃后,慈竹化学组分和慈竹重组材力学性质出现急剧的变化,保证力学强度的前提下,考虑户外用材的尺寸稳定性及生物耐久性的要求,可选用热处理温度190℃,热处理温度2h的热处理工艺。
关键字:慈竹高温热处理重组材化学组分力学性质
Effect on Properties of High Temperature Heat treated Neosinocalamus affinis Reconstituted Bamboo Lumber
CHENG Da-li, JIANG Shen-xue
(Nanjing forestry university, Nanjing 210037)
Abstract:Sympodial Neosinocalamus affinis bamboo slivers were treated by heat treatment with different high temperatures and then made of reconstituted bamboo lumber (RBL). The position of bamboo slivers and analysis of physical and mechanical properties of RBL before and after treatment were studied, the result indicates that position and mechanical properties were changed dramatically when temperature rose form 190℃ to 210℃. Considering the dimensional stability and durability of outside materials, heat treatment temperature 190℃, heat treatment time 2h were the best for the mechanical properties.
Key words: Neosinocalamus affinis high temperature treatment Reconstituted bamboo lumber position mechanical properties
竹类植物隶属于禾本科的竹亚科,是中国重要的森林资源,而丛生竹是国产竹类资源的重要组成部分,由于丛生竹类具有成熟年限短、产量更高、在一些领域有开拓利用的更大优势等特点,因此丛生竹的利用有着十分良好的前景[1]。竹材重组材是将构成单元——竹束或竹篾,通过科学合理的设计组坯,热压胶合而成的一种强度高,韧性好,具有天然竹材纹理的一种新型结构用竹材人造板[2,3]。但由于竹材的化学成分中含有较高的淀粉、糖类及蛋白质等有机物质,因而竹材制品在贮存、加工