Abstract:
［Objective］To investigate the characterization of the color particles’strength and prediction of color particle texture in sand-in-water multicolor coatings.［Methods］The viscoelastic modulus of the base paint of sand-in-water multicolor coatings in the linear viscoelastic region wasmeasured using a rotational rheometer to characterize the strength of the color particles. The influenceof hydrophobically modified cellulose ether on the strength of the color particles was studied，thereby establishing the relationship between the color particles’strength and texture.［Results］When the elastic modulus of the base paint was between 180 and 230 Pa and the viscous modulus was between 90and 130 Pa，the strength of the color particles was higher，resulting in a good texture and stone-like effect after spraying.［Conclusion］The rheological characterization method established in this paper for sand-in-water multicolor coatings could quantitatively characterize the strength of the color particles and predict the texture，providing a theoretical basis for the development of related productsfor waterborne multicolor coatings.
Key words:
sand-in-water multicolor coatings,
hydrophobically modified cellulose ether,
viscoelastic modulus,
texture,
color particles’strength
摘要： 【目的】探究水包砂多彩涂料彩粒强度表征和彩粒质感预测方法。【方法】通过旋转流变仪测定水包砂多彩涂料基础漆在线性黏弹区内的黏弹性模量来表征彩粒强度，研究疏水改性纤维素醚对彩粒强度的影响，从而构建彩粒强度和质感的关系。【结果】当基础漆的弹性模量在 180~230 Pa且黏性模量在 90~130 Pa时，彩粒的强度较高，喷涂后成型的质感和仿石效果好。【结论】对水包砂多彩涂料建立的流变学表征方法，可以对彩粒强度进行定量化表征，并对质感进行预测，为水性多彩涂料相关产品开发提供了理论基础。
关键词:
水包砂多彩涂料,
疏水改性纤维素醚,
黏弹性模量,
质感,
彩粒强度
CLC Number: