Especificação técnica e avaliação físico-química de tintas imobiliárias à base de água

Abstract

Since the rise of civilization, it is notorious to notice the use of paints in cave arts. These people used pigments from plants and binders from the gum, eggs, gelatin, or beeswax. Over the centuries, techniques for formulating and applying these paints have improved in various parts of the world. Brazil stands out among the five largest paint markets in the world, due to its technological updating and constant search to meet the demands and challenges posed by society and the market. The components of architectural paints are additives, solvents, pigments, and resins. They can be classified as Economy, Standard, and Premium. To guarantee the quality and standardization of the products, according to ABNT, physical-chemical analyzes and tests of resistance to wet abrasion with abrasive paste and covering power in the dry film were carried out. For the pH, viscosity, and specific weight tests, a ph meter, a KU-2 viscometer and a steel pycnometer were used, respectively. The washing machine was used to obtain the resistance to wet abrasion and application cards for the covering power. It resulted in values within the reestablished standard of the ABNT. The viscosity of standard paints and the high covering power of Premium paints stood out. The purpose is to respect quality, legislation, opt for lower environmental impacts and inform the cost-effectiveness of the different lines of paint.