Selection of Crosslinking Agents for Acrylic Resin Used in External Coatings for Aluminum Packaging in the Beverage Industry

Author:

Santarelli Michelli1,Bonse Baltus Cornelius2ORCID,Rocha Poço Joao Guilherme1ORCID

Affiliation:

1. Chemical Engineering Department, Centro Universitário Fundação Educacional Inaciana “Padre Sabóia de Medeiros”—FEI, São Bernardo do Campo 09850-901, Brazil

2. Materials Engineering Department, Centro Universitário Fundação Educacional Inaciana “Padre Sabóia de Medeiros”—FEI, São Bernardo do Campo 09850-901, Brazil

Abstract

Paints and coatings are widely used in various applications such as walls, cars, packaging, and food products. The quality of food packaging is essential due to its direct or indirect contact with food. The demand for high-quality food packaging is increasing due to the higher production and consumption rates. However, containers used in the beverage industry often face problems like scratches and abrasions during transportation. This study aimed to investigate different formulations of external coatings for beverage cans to improve their physical resistance properties and prevent corrosion and surface damage problems. The study involved reacting an acrylic resin with six different amino resins, including methylated melamine, butylated melamine, glycoluril, methylated urea, butylated urea, and benzoguanamine, in various proportions. The results of 25 formulated samples were compared based on properties such as adhesion, durability, and chemical resistance. The outcomes of the study showed significant differences among the crosslinking agents. Among all the crosslinking agents, methylated melamine showed the most favorable results in the analyses, proving effective in almost all tests.

Funder

FAPESP

Publisher

MDPI AG

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