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    李萍, 张源, 吴义强, 吕建雄, 袁光明, 左迎峰. 硅酸盐浸渍改性对杉木视觉物理量的影响[J]. 北京林业大学学报, 2020, 42(9): 122-129. DOI: 10.12171/j.1000-1522.20200189
    引用本文: 李萍, 张源, 吴义强, 吕建雄, 袁光明, 左迎峰. 硅酸盐浸渍改性对杉木视觉物理量的影响[J]. 北京林业大学学报, 2020, 42(9): 122-129. DOI: 10.12171/j.1000-1522.20200189
    Li Ping, Zhang Yuan, Wu Yiqiang, Lü Jianxiong, Yuan Guangming, Zuo Yingfeng. Effects of silicate impregnation modification on visual physical parameters of Chinese fir wood[J]. Journal of Beijing Forestry University, 2020, 42(9): 122-129. DOI: 10.12171/j.1000-1522.20200189
    Citation: Li Ping, Zhang Yuan, Wu Yiqiang, Lü Jianxiong, Yuan Guangming, Zuo Yingfeng. Effects of silicate impregnation modification on visual physical parameters of Chinese fir wood[J]. Journal of Beijing Forestry University, 2020, 42(9): 122-129. DOI: 10.12171/j.1000-1522.20200189

    硅酸盐浸渍改性对杉木视觉物理量的影响

    Effects of silicate impregnation modification on visual physical parameters of Chinese fir wood

    • 摘要:
        目的  对杉木素材与硅酸盐改性材的弦切板与径切板材色、光泽度、纹理进行测量与对比,分析硅酸盐改性处理对杉木视觉特性的影响规律。旨在为硅酸盐改性材的大规模应用提供理论依据,指导杉木改性材相关产品的研发。
        方法  在改性前后,对100 mm × 100 mm × 20 mm的杉木径切板和杉木弦切板的材色、光泽度、纹理进行测量,分析改性处理前后杉木视觉物理量的变化规律。
        结果  改性后,弦切板与径切板的红绿色度值分布区间分别为2.0 ~ 6.0和2.5 ~ 5.5,黄蓝色度值分布区间分别为17.5 ~ 24.0和18.0 ~ 24.0,两组数据均较素材小。明度值分布区间也有所下降,为61.0 ~ 71.0,表明改性处理对杉木的色彩倾向有所均衡,在明暗程度上也有一定影响。杉木素材的平行纹理光泽度(GZL)、垂直纹理光泽度(GZT)、光泽度比(GZB)分别为5.54%、4.32%、1.28,杉木改性材的GZL、GZT、GZB分别为3.32%、2.86%、1.16。两种杉木的GZL均略大于GZT,呈现一定的线性关系。改性后,光泽度线性趋势更加明显,而且数据也更为集中。杉木改性材的纹理粗细、纹理间距、纹理疏密度分别为0.55 mm、9.51 mm、0.06,与素材差别微弱,表明改性处理并没有对纹理的疏密程度产生影响。改性材弦切板与径切板的纹理灰度与背景灰度分布区间都较素材有所降低,说明改性处理使得杉木的纹理与背景的灰度等级变得更高。杉木改性材的纹理灰度与背景灰度分布较素材松散,两者呈一定的线性关系但不紧凑。
        结论  硅酸盐改性处理对木材颜色影响较小,杉木基本上维持了原有的颜色特征。杉木改性材光泽度略小于素材,基本分布规律相同。改性处理对纹理间距与纹理粗细的影响微弱,改性材仍保持同素材一样的纹理疏密程度,改性后的杉木纹理灰度值与背景灰度值差别变大,对比度稍高,使得改性杉木的纹理较素材更明显。

       

      Abstract:
        Objective  The color, glossiness and texture of plain-sawed and quarter-sawed lumber of unmodified and silicate modified wood were measured and compared, and the effects of silicate modified treatment on the visual characteristics of Chinese fir wood were analyzed. The purpose was to provide theoretical basis for the large-scale application of silicate modified wood, guide the research and development of related products of modified Chinese fir wood.
        Method  By means of colorimeter, glossmeter and other experimental equipment, the L*a*b* value, glossiness and texture of plain-sawed and quarter-sawed lumber with a specification of 100 mm × 100 mm × 20 mm before and after modification were measured at room temperature, and the changing rule of visual physical parameters of the wood was analyzed.
        Result  (1) After modification, the red green value (a*) distribution intervals of the plain-sawed and quarter-sawed lumber were 2.0−6.0, 2.5−5.5, respectively, and the yellow blue chroma value (b*) distribution intervals were 17.5−24.0, 18.0−24.0, respectively. The two groups of data were smaller than the unmodified wood. The distribution range of lightness (L) value also decreased to 61.0−71.0, indicating that the modification had a balanced color tendency and a certain influence on the lightness and darkness of Chinese fir. (2) The parallel incident glossiness (GZL), vertical incident glossiness (GZT) and glossiness ratio (GZB) of unmodified wood were 5.54%, 4.32% and 1.28, respectively, and the GZL, GZT and GZB of modified Chinese fir were 3.32%, 2.86% and 1.16, respectively. The parallel grain glossiness GZL of the two kinds of wood was slightly higher than the straight grain glossiness GZT, showing a certain linear relationship. After modification, the linear trend of glossiness was more obvious, and the data were more centralized. (3) The texture roughness, spacing and density of the modified wood were 0.55 mm, 9.51 mm and 0.06, respectively, which showed that the modification had no effect on the wood texture. The gray distribution interval of the grain and background of the modified wood was lower than that of the unmodified wood, indicating that the modified wood made the gray level of the texture and background of the wood higher. The distribution of grain and background gray level of modified wood was looser than that of the unmodified wood. Though they had a certain linear relationship, while they were not compact.
        Conclusion  Silicate modification has little effect on wood color, and the wood basically maintaines its original color characteristics. In glossiness, the modified wood is slightly smaller than the unmodified wood, and the basic distribution law is the same. The effect of the modification on the grain spacing and the grain thickness is weak. The grain density of the modified wood is still the same as that of the unmodified wood. The difference between the gray value of the modified wood grain and the background gray value becomes larger, and the contrast is slightly higher, which makes the grain of the modified wood more obvious than that of the unmodified wood.

       

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