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    皇权飞, 黄艳辉, 张唯, 林欣雨, 王雪聪. 基于水曲柳基材的水性漆漆膜性能研究[J]. 北京林业大学学报, 2020, 42(7): 140-146. DOI: 10.12171/j.1000-1522.20200088
    引用本文: 皇权飞, 黄艳辉, 张唯, 林欣雨, 王雪聪. 基于水曲柳基材的水性漆漆膜性能研究[J]. 北京林业大学学报, 2020, 42(7): 140-146. DOI: 10.12171/j.1000-1522.20200088
    Huang Quanfei, Huang Yanhui, Zhang Wei, Lin Xinyu, Wang Xuecong. Film properties of waterborne paint based on Fraxinus mandshurica substrate[J]. Journal of Beijing Forestry University, 2020, 42(7): 140-146. DOI: 10.12171/j.1000-1522.20200088
    Citation: Huang Quanfei, Huang Yanhui, Zhang Wei, Lin Xinyu, Wang Xuecong. Film properties of waterborne paint based on Fraxinus mandshurica substrate[J]. Journal of Beijing Forestry University, 2020, 42(7): 140-146. DOI: 10.12171/j.1000-1522.20200088

    基于水曲柳基材的水性漆漆膜性能研究

    Film properties of waterborne paint based on Fraxinus mandshurica substrate

    • 摘要:
        目的  水曲柳作为优良的硬质木材,常被用来制造中高档家具。水性漆是一种非常环保的涂料,研究其在水曲柳基材上的漆膜性能对于水性漆性能的提高和涂饰工艺的优化具有重要的现实意义,还可为水性漆在木材上的大规模工业化应用提供理论支持和科学依据。
        方法  以水曲柳为基材,用商业水性漆对其进行涂饰,待漆膜完全固化后按照相应标准测定漆膜的各个性能,并用SEM和FTIR分析水性漆在基材上的附着机理。
        结果  得到的漆膜厚度为96.63 μm,硬度为H,附着力高至0级,耐水性可达1级;涂饰前后总色差值ΔE为9.86,说明本涂饰较好地保持了水曲柳本身的颜色。由于底漆均匀地覆盖在基材表面,封闭了基材中亲水性的羟基,使得涂饰底漆后基材表面的接触角提高了10°,疏水性能得到提升。涂饰后基材的表面光泽度明显提高,且其平行纹理方向的光泽度比垂直纹理方向的高了40.4%。这主要是由于组成木材的细胞大多呈轴向排列,水性漆主要填充在纵向排列的细胞腔中,很难渗入到以纳米级孔隙为主的细胞壁中。水性漆与基材主要以机械互锁的物理形式相结合,此外也发生了化学反应。1 148 cm− 1处峰强度增加,说明水性漆中的羧基与基材中的羟基发生了酯化反应;出现了新的1 063 cm− 1峰,说明基材中的纤维素与水性底漆中的羟基发生了醚化反应。
        结论  水性漆能在水曲柳表面形成较好的附着,保护性能较好,且能有效提高基材的视觉效果,进而提高其商业价值。

       

      Abstract:
        Objective  Fraxinus mandshurica, as a kind of excellent hard wood, is often used to make medium and high grade furniture. The waterborne paint is a very environmentally friendly paint, and it is of great practical significance to study the coating properties of Fraxinus mandshurica for improving the performance of waterborne paint and optimizing the coating process. In this paper, the film properties and adhesion mechanism of waterborne paint on the surface of Fraxinus mandshurica were systematically studied, which can provide theoretical support and scientific basis for the application and research of waterborne paint on wood.
        Method  In this paper, commercial waterborne paint was used to paint Fraxinus mandshurica and the film properties were measured according to the corresponding standards. SEM and FTIR were used to explore the adhesion mechanism of waterborne paint on the substrate.
        Result  The film thickness of cured waterborne paint on substrate was 96.63 μm, the hardness was H, the adhesion was up to level 0, the water resistance was up to grade 1, the color difference value ΔE before and after coating was 9.86, which could keep the wood color of the substrate. Because the priming paint evenly covered the surface of the substrate, sealed the hydrophilic hydroxyl in the substrate, and improved the hydrophobic property of the substrate surface, the contact angle of the substrate surface increased by about 10°. The surface glossiness of the coated substrate was significantly improved, and the glossiness in parallel texture direction was 40.4% higher than that in the vertical direction. This is mainly due to the fact that most of the cells making up the wood are arranged in an axial direction, and the waterborne paint is mainly filled in the large cell cavities arranged longitudinally, but it is difficult to penetrate into the cell walls with nano level pores. The combination of waterborne paint and substrate was mainly in the physical form of mechanical interlocking, and chemical reactions also occurred. The increase of the intensity of the peak of1 148 cm− 1 indicated that the carboxyl group in the waterborne paint had esterified with the hydroxyl group in the substrate; the appearance of the peak 1 063 cm− 1 showed that the cellulose in the substrate had etherified with the hydroxyl group in the waterborne primer.
        Conclusion  The waterborne paint has good adhesion on the surface of Fraxinus mandshurica, has a good protective performance and can effectively improve the visual effect of the substrate, so as to improve its commercial value.

       

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