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首页> 外文期刊>ACS Omega >Development and Application of Nanosized Polymer-Stabilized Cobinders and Their Effect on the Viscoelastic Properties and Foaming Tendencies of Coating Colors
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Development and Application of Nanosized Polymer-Stabilized Cobinders and Their Effect on the Viscoelastic Properties and Foaming Tendencies of Coating Colors

机译：纳米化聚合物稳定型COBINDERS的开发和应用及其对涂料颜色粘弹性性能和发泡倾向的影响

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Polymer latexes have long been used as coating binders by various branches of industry due to their capacity to adhere coating components and increase the strength of the dried final coatings. In addition, these latexes have been known to affect the rheology of coating dispersions. Currently, emulsion polymerization is the most widely used method of producing polymer latexes. While the stability of these latexes is primarily provided by electrostatic repulsion between surfactants, this property also causes foaming problems during coating processes. In this research, these problems were addressed by preparing polymer-stabilized (PS) latexes that contained different concentrations of acrylic acid. Steric protection of the latexes was provided by a protective shell consisting of starch and poly(vinyl alcohol) (PVA). The viscosity, particle size, ζ-potential, and viscoelastic behavior of the prepared latexes were investigated as a function of pH, and their surface tension and foaming tendencies were evaluated. The latexes were applied as coating cobinders in calcium carbonate and clay coating dispersions, and the viscoelastic properties, surface tensions, and foaming tendencies of these mixtures were studied. The presence of acrylic acid monomers was found to be an important factor affecting the viscosity, particle size, and ζ-potential of the PS latexes prepared in this work, which were further found to generate less foam than comparable emulsion-polymerized latexes. Finally, coating color viscoelastic properties were modified via the partial substitution of styrene–butadiene (S/B) latexes with PS latexes.
机译：由于它们的粘合涂布组分的能力并增加干燥的最终涂层的强度，聚合物胶乳长期被用作各种工业分支的涂料粘合剂。此外，已知这些胶乳会影响涂层分散体的流变学。目前，乳液聚合是最广泛使用的生产聚合物胶乳的方法。虽然这些胶乳的稳定性主要通过表面活性剂之间的静电排斥提供，但是该性质也在涂覆过程中引起发泡问题。在该研究中，通过制备包含不同浓度的丙烯酸的聚合物稳定（PS）胶乳来解决这些问题。由由淀粉和聚（乙烯醇）（PVA）组成的保护壳提供胶乳的空间保护。作为pH的函数研究制备胶乳的粘度，粒度，Ⅳ电位和粘弹性行为，并评估其表面张力和发泡倾向。将胶乳作为涂布砂胶蛋白涂覆碳酸钙和粘土涂层分散体，研究这些混合物的粘物性质，表面张力和发泡趋势。发现丙烯酸单体的存在是影响在该工作中制备的PS胶乳的粘度，粒度和△ - 潜力的重要因素，这进一步发现比可比较的乳液聚合的胶乳产生更少的泡沫。最后，通过用PS胶乳的苯乙烯 - 丁二烯（S / B）胶乳的部分取代来改变涂层颜色粘弹性。

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