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首页> 外文期刊>JCT research >Wood surfaces protected with transparent multilayer UV-cured coatings reinforced with nanosilica and nanoclay. Part Ⅱ: Application of a standardized test method to study the effect of relative humidity on scratch resistance
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Wood surfaces protected with transparent multilayer UV-cured coatings reinforced with nanosilica and nanoclay. Part Ⅱ: Application of a standardized test method to study the effect of relative humidity on scratch resistance

机译：木材表面用透明的多层紫外线固化涂料保护，该涂料用纳米二氧化硅和纳米粘土增强。第二部分：标准化测试方法在研究相对湿度对耐刮擦性的影响中的应用

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摘要

Coated wood surfaces of components constituting flooring and furniture for interior end uses that exhibit good tribological properties are highly desirable. Surfaces of yellow birch wood (Betula alleghaniensis Britton) were protected with six different types of multilayer coatings (MCs) developed in this study. Each MC consisted of three layers: primer, sealer, and topcoat. UV-curable primer and topcoat formulations were, respectively, reinforced with a hydrophobic fumed silica (NS: 0 and 0.5 wt% in the formulation) and nanoclay (NC: 0, 1, and 3 wt% in the formulation). The scratch resistance of MCs on wood surfaces conditioned at 40% and 80% relative humidity (RH) was quantitatively and qualitatively studied. Quantitative evaluation was performed according to a standardized scratch test, while scanning electron microscopy (SEM) analysis was used for qualitative evaluation. Statistical results have shown that NS, NC, and NS × NC do not have a significant effect on scratch resistance of coated wood surfaces, whereas the effect of RH is significant. Regardless of RH, SEM images reveal that: (ⅰi) there is no sign of lack of adhesion between coating layers and the MCs/wood surfaces interface and (ⅱ) all the MCs seem to have a ductile/brittle response to scratching. Qualitative information was in accordance with quantitative results.
机译：非常需要构成地板和用于室内最终用途的家具的部件的涂覆的木质表面表现出良好的摩擦学性能。本研究开发的六种不同类型的多层涂层（MC）保护了黄桦木（Betula alleghaniensis Britton）的表面。每个MC由三层组成：底漆，密封剂和面漆。分别使用疏水性气相二氧化硅（配方中的NS：0和0.5 wt％）和纳米粘土（配方中的NC：0、1和3 wt％）增强UV固化的底漆和面漆配方。定量和定性研究了在40％和80％相对湿度（RH）的木质表面上MC的耐划伤性。根据标准化划痕测试进行定量评估，而扫描电子显微镜（SEM）分析用于定性评估。统计结果表明，NS，NC和NS×NC对涂层木材表面的耐刮擦性没有显着影响，而RH的影响却很明显。不论相对湿度如何，SEM图像均显示：（i）涂层与MCs /木材表面界面之间没有粘附力不足的迹象；（ⅱ）所有MCs似乎都对刮擦具有延性/脆性。定性信息与定量结果一致。

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  • 来源
    《JCT research》 |2014年第6期|993-1011|共19页
  • 作者

    William Nguegang Nkeuwa; Bernard Riedl; Veronic Landry;

  • 作者单位

    Departement des sciences du bois et de la foret, Centre de recherche sur les materiaux renouvelables, Universite Laval, Quebec City, QC G1V 0A6, Canada;

    Departement des sciences du bois et de la foret, Centre de recherche sur les materiaux renouvelables, Universite Laval, Quebec City, QC G1V 0A6, Canada;

    Departement des sciences du bois et de la foret, Centre de recherche sur les materiaux renouvelables, Universite Laval, Quebec City, QC G1V 0A6, Canada Secondary wood Products Manufacturing, FPInnovations, Quebec City, QC G1P 4R4, Canada;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Wood; UV cure; Multilayer coatings; Nanoparticles; Scratch resistance; Relative humidity;

    机译：木;紫外线固化;多层涂料;纳米颗粒;耐刮擦性;相对湿度;

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