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Optimization of performance of sustainable paints using granite waste through the variation of particle size and pH
Journal of Cleaner Production ( IF 11.1 ) Pub Date : 2021-10-19 , DOI: 10.1016/j.jclepro.2021.129418
Márcia Maria Salgado Lopes 1 , Leonardo Gonçalves Pedroti 1 , André Fernando de Oliveira 2 , José Carlos Lopes Ribeiro 1 , José Maria Franco de Carvalho 1 , Anôr Fiorini de Carvalho 3 , Fernando de Paula Cardoso 1 , Gustavo Henrique Nalon 1 , Gustavo Emilio Soares de Lima 1
Affiliation  

A new alternative to support and promote sustainable development is the incorporation of waste from granite rock processing in manufacture of building paints. Thus, this study aims to evaluate and optimize the performance of latex paints based on poly vinyl acetate resin using granite waste as a pigment, varying the pigment particle size and the pH of the paints. The granite waste was tested in three different conditions: without any special treatment; after milling process; and with the addition of pH regulating agent. An experimental design of mixtures was elaborated, varying the pigment volume concentration (PVC) from 55 to 77%. The paints were evaluated for coverage power and abrasion resistance. Performance indicators were proposed, and a statistical desirability function was used to determine the formulations with acceptable performance. Reducing the particle size of the waste to an average diameter of 10 to 5 μm resulted in paints with better coverage power, and the use of the pH regulating agent to keep the pH in the range of 4–5 improved the performance of the resin. Paints with milled granite waste that present PVC in the range of 60–63% meet the specifications for the economical paint category. Paints produced with unmilled granite waste with the addition of the sulfuric acid that have PVC equal to 70% also meet such specifications. Therefore, these treatments optimized the performance of the paints.



中文翻译:

通过改变粒度和 pH 值优化使用花岗岩废料的可持续涂料的性能

支持和促进可持续发展的一个新选择是将花岗岩岩石加工产生的废物纳入建筑涂料的制造中。因此,本研究旨在评估和优化基于聚醋酸乙烯酯树脂的乳胶漆的性能,使用花岗岩废料作为颜料,改变颜料粒径和油漆的 pH 值。花岗岩废料在三种不同的条件下进行了测试:未经任何特殊处理;铣削加工后;并加入pH调节剂。精心设计了混合物的实验设计,将颜料体积浓度 (PVC) 从 55% 变化到 77%。评估涂料的覆盖力和耐磨性。提出了性能指标,并使用统计合意性函数来确定具有可接受性能的配方。将废料的粒径减小至平均直径为 10 至 5 微米,可使涂料具有更好的覆盖能力,而使用 pH 调节剂将 pH 值保持在 4-5 范围内可提高树脂的性能。含有 60-63% PVC 的磨碎花岗岩废料涂料符合经济涂料类别的规格。用未研磨的花岗岩废料添加硫酸生产的 PVC 等于 70% 的涂料也符合这些规格。因此,这些处理优化了涂料的性能。含有 60-63% PVC 的磨碎花岗岩废料涂料符合经济涂料类别的规格。用未研磨的花岗岩废料添加硫酸生产的 PVC 等于 70% 的涂料也符合这些规格。因此,这些处理优化了涂料的性能。含有 60-63% PVC 的磨碎花岗岩废料涂料符合经济涂料类别的规格。用未研磨的花岗岩废料添加硫酸生产的 PVC 等于 70% 的涂料也符合这些规格。因此,这些处理优化了涂料的性能。

更新日期:2021-10-24
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