| 摘要: |
| 【目的】优化黄藤和单叶省藤的改性处理工艺，以提高我国棕榈藤资源高附加值加工利用水平。【方法】以黄藤和单叶省藤为研究对象，选择改性方式、改性工艺、浸注量以及处理试剂4个因素分3水平进行L9(34)正交试验，对2种藤条改性处理前后主要物理力学性质及尺寸稳定性的变化进行测定，通过优序数法分析试验结果，建立最佳改性工艺。【结果】黄藤最佳改性方案为辐照处理、辐照剂量15 kGy，浸注量50%，处理试剂为三聚氰胺树脂；单叶省藤最佳改性方案为辐照处理、辐照剂量15 kGy，浸注量50%，处理试剂为脲醛树脂。按照对应最佳工艺，黄藤素材和改性材的气干密度、绝干密度、基本密度、抗弯弹性模量(MOE)、抗弯强度(MOR)、顺纹抗压弹性模量(MOEIC)、顺纹抗压强度(CS)依次为0.46和0.69 g/cm3、0.43和0.65 g/cm3、0.39和0.59 g/cm3、1 525.46 和1 944.71 MPa、57.62和 66.87 MPa、1 198.49和1 688.70 MPa、23.54和34.44 MPa，单叶省藤素材和改性材的上述指标依次为0.55和0.77 g/cm3、0.52和0.72 g/cm3、0.47和0.65 g/cm3、1 375.32和1 550.78 MPa、67.88 和71.25 MPa、1 597.18和1 740.50 MPa、31.59和36.74 MPa。黄藤改性材的阻湿率(MEE)和抗吸水率(RWA)分别为16.69%和125.10%，单叶省藤改性材的阻湿率和抗吸水率分别为23.56%和81.62%。【结论】改性材的密度、MOE、MOR、MOEIC、CS、MEE和RWA等大部分物理力学性质及尺寸稳定性均有显著改善。 |
| 关键词: 黄藤 单叶省藤 改性处理 藤材材性 优序数法 |
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| 基金项目:“十二五”国家科技计划课题(2012BAD23B0104)；安徽省自然科学基金项目(11040606M60) |
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| Comprehensive evaluation on modification techniques for Daemonorops margaritae and Calamus simplicifolius |
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XU Xin,LIU Xing-e,WANG You-hong
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| Abstract: |
| 【Objective】This study optimized the modification processes for Daemonorops margaritae and Calamus simplicifolius to improve the levels of high value-added processing and utilizing for Chinese rattan resources.【Method】Using D.margaritae and C.simplicifolius as the research materials,L9(34) orthogonal experiment was conducted with four factors including modification way,modification technique,leaching amount and processing reagents in three levels.Main physical and mechanical properties and dimensional stabilities were measured before and after the modification,then the optimum process was established by calculating the experimental results with prior-order numbers.【Results】The best D.margaritae modification way was irradiate with dose of 15 kGy,grafting yield of 50%,and reagent of MF.The best modification way for C.simplicifolius was irradiate with dose of 15 kGy,grafting yield of 50%,and reagent of UF.According to the optimum processes,the air dry densities,oven dry densities,basic densities,MOE,MOR,MOEIC,and CS of D.margaritae before and after modification were 0.46 and 0.69 g/cm3,0.43 and 0.65 g/cm3, 0.39 and 0.59 g/cm3, 1 525.46 and 1 944.71 MPa, 57.62 and 66.87 MPa,1 198.49 and 1 688.70 MPa,and 23.54 and 34.44 MPa,respectively;and the corresponding values of C.simplicifolius were 0.55 and 0.77 g/cm3,0.52 and 0.72 g/cm3,0.47 and 0.65 g/cm3,1 375.32 and 1 550.78 MPa,67.88 and 71.25 MPa,1 597.18 and 1 740.50 MPa,and 31.59 and 36.74 MPa,respectively.MEE and RWA values of D.margaritae after modification were 16.69% and 125.10%,while that of C.simplicifolius were 23.56% and 81.62%,respectively.【Conclusion】Most physical and mechanical properties including densities,MOE,MOR,MOEIC,CS,MEE and RWA as well as dimensional stabilities of D.margaritae and C.simplicifolius after modification were increased. |
| Key words: Daemonorops margaritae Calamus simplicifolius modification rattan propterties prior-order numbers |
