人工林杨木增强-染色复合改性材的性能  

Properties of Strengthening-Dyeing-Combined Modified Plantation Poplar Wood

作　　者：许茂松 吕文华[1] 王雪玉[1] 

机构地区：[1]中国林业科学研究院木材工业研究所,北京100091

出　　处：《林业科学》2017年第1期82-87,共6页Scientia Silvae Sinicae

基　　金：中央级公益性科研院所基本科研业务费专项资金(CAFYBB2014MB003)

摘　　要：【目的】探讨人工林杨木增强-染色复合改性方法及改性材性能,为人工林杨木资源的高效开发利用提供技术支持。【方法】将相同质量分数的酸性大红G水溶液、酸性湖蓝A水溶液、酸性大红G和酸性湖蓝A与水溶性树脂型增强改性剂MUF复配得到的增强-染色复合改性剂,分别对人工林杨木进行真空加压浸渍处理,得到D_G、D_A、MUF-D_G和MUF-D_A4种染色改性材,测试其强度、颜色、耐水色牢度等性能。【结果】1)D_A和D_G染色材的质量增加率分别为-1.69%和-0.65%,密度分别为0.352和0.365 g·cm-3;MUF-D_A和MUF-D_G增强-染色复合改性材的质量增加率分别为42.64%和54.27%,密度分别为0.445和0.510 g·cm^(-3)。与D_A染色材相比,MUF-D_A增强-染色复合改性材的密度、抗弯弹性模量、抗弯强度和抗压强度分别提高26.42%,6.76%,17.63%和54.32%;与D_G染色材相比,MUF-D_G增强-染色复合改性材的密度、抗弯弹性模量、抗弯强度和抗压强度分别提高39.73%,8.58%,18.82%和57.18%。2)D_A染色材和MUF-D_A增强-染色复合改性材染色前后的明度指数差(ΔL*)、红绿指数差(Δa*)和黄蓝指数差(Δb*)均为负值,MUF-D_A增强-染色复合改性材的Δa*值更小、ΔL*和Δb*值均更大,蓝色调更明显;D_G染色材和MUF-D_G增强-染色复合改性材染色前后的Δa*为正值、ΔL*和Δb*为负值,MUF-D_G增强-染色复合改性材的Δa*、ΔL*和Δb*值均更大,红色调更明显;MUF-D_A和MUF-D_G增强-染色复合改性材的色饱和度差(ΔC*)均显著大于相应的D_A和D_G染色材。3)D_A和D_G染色材水浸前后的总色差ΔE*分别为12.92和8.30 NBS,MUF-D_A和MUF-D_G增强-染色复合改性材水浸前后的总色差ΔE*分别为5.94和6.93 NBS,增强-染色复合改性材水浸前后颜色溶蚀程度较小。4)D_A和D_G染色材与未处理材的红外光谱图形态基本一致,MUF-D_A和MUF-D_G增强-染色复合改性材与MUF增强改性材的红外光谱图形态基本一致,没有新的�【Objective】In order to provide the technical support for the efficient exploitation and utilization of plantation poplar wood resources,this study investigated the method of strengthening-dyeing-combined modification of plantation poplar wood and the properties of the modified wood.【Method】The acid red G aqueous solution,the acid blue A aqueous solution,and the acid red G and the acid blue A blended individually with water soluble strengthening modifier（i.e.MUF resin）,all of the same dye mass fraction,were used to modify the plantation poplar wood through the vacuumpressure impregnation treatment,and the DA,DG,MUF-DAand MUF-DGdyed wood were obtained respectively.The physical and mechanical properties,color and colorfastness to water of all the dyed wood were measured.【Result】Results showed that：1） The weight percent gain of the DA,DG,MUF-DAand MUF-DGdyed wood were-1.69%,-0.65%,42.64% and 54.27%,and their density were 0.352,0.365,0.445 and 0.510 g·cm^-3,respectively.Compared with those of the DAdyed wood,the density,modulus of elasticity（MOE）,modulus of rupture（MOR）,and compressive strength of the MUF-DAmodified wood increased by 26.42%,6.76%,17.63%,and 54.32% respectively.As compared with those of the DGdyed wood,the density,MOE,MOR,and compressive strength of the MUF-DGmodified wood increased by 39.73%,8.58%,18.82%,and 57.18% respectively.2） The light index difference（ΔL^＊）,greenred index difference（Δa^＊） and yellow-blue index difference（Δb^＊） of the DAand MUF-DAwere all negative,and the MUF-DA＇s Δa^＊was lower,its ΔL^＊and Δb^＊were higher,so its blue tone was more obvious.As for the DGand MUF-DG,the ΔL^＊and Δb^＊were negative and the Δa^＊was positive,and the ΔL^＊,Δa^＊and Δb^＊of the MUF-DGwere all higher,so its red tone was more obvious.The color saturation difference（ΔC^＊） of the MUF-DAand MUF-DGwere much higher than those of the DAand DG.3） The total color difference（ΔE^＊） of the DAand DGafter water erosion test were

关 键 词：人工林杨木 增强-染色复合改性剂 浸渍处理 性能 红外分析 

分 类 号：S781.7[农业科学—木材科学与技术]