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无机颜料浓度对木塑复合材料光谱反射率的影响

2015-07-13姚爱莹宋魁彦

安徽农业科学 2015年7期

姚爱莹 宋魁彦

摘要[目的]探讨无机颜料浓度与木塑复合材料光谱反射率之间的关系。[方法]采用不同浓度的铁红、铁黄、群青、钛白和炭黑5种常用的无机颜料对木塑复合材料进行着色,测定着色后木塑在不同波长下的光谱反射率。[结果]除钛白颜料外,其他颜料的加入会使木塑材料的光谱反射率有所减少,且在一定范围内随着颜料浓度增加,光谱反射率减小。[结论]铁红、铁黄、群青、钛白和炭黑无机颜料在一定范围内光谱反射率会随颜料浓度的增加而减小,有利于木塑复合材料进行计算机配色的后续研究。

关键词着色颜料;木塑复合材料;光谱反射率

中图分类号S784文献标识码A文章编号0517-6611(2015)07-160-02

Effects of Pigment Concentration on Spectral Reflectance of Pigmented Wood Plastic Composite Materials

YAO Ai-ying, SONG Kui-yan*

(College of Materials Science and Engineering, Northeast Forestry University, Harbin, Heilongjiang 150040)

Abstract[Objective] In order to get the relationship between pigment and wood plastic compsite materials.[Method] Utilizing five commonly used inorganic pigments, iron oxide red, iron yellow, green, titanium white and black as the colorant, the spectral reflectance of wood plastic under different wavelength was determined. [Result] In addition to the titanium white pigment, the other pigments can reduce wood plastics material spectral reflectance, and within a certain range with the increase of pigment concentration, spectral reflectance decreases. [Conclusion] In a certain range spectral reflectance decreases with increased concentration of pigment, is advantageous to the wood plastic composite materials for further research of computer color matching.

Key wordsPigment; Wood plastic composite materials; Spectral reflectance

木塑复合材料是一种新型的高性能环保材料,主要由农作物秸秆、木粉、木纤维等生物质材料和从废旧塑料中获得的高分子材料按一定工艺所获得。木塑复合材料可以应用于包装、城建、建筑装饰等方面[1-2]。对于木塑复合材料进行色彩装饰是以人工配色为主,按经验混合着色颜料,费事、费时、误差大[3],而将计算机配色应用于木塑复合材料,会使木塑材料的配色更加方便、快捷、准确。

依照Kubellka-Munk理论及Allen配色法,进行计算机配色需确定着色颜料与目标色之间光吸收系数与散射系数之比(K/S)及着色颜料浓度的关系,以便于确定颜色配方[4-5]。无机颜料在着色强度、热熔稳定性、光稳定、耐候性、耐热性以及成本等方面,更具有优越性,因而对木塑的计算机配色采用无机颜料作为着色剂[6]。……

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