High solid content acrylic varnish, and preparation method and application thereof

Abstract

The invention discloses a high solid content acrylic varnish which comprises the following raw materials in percentage by mass: 50-60% of hydroxy acrylic resin, 20-30% of polyurethane curing agent, 12.6-18% of organic solvent, 0.1-2% of wetting agent, 0.1-2% of flatting agent and 0.1-1% of antifoaming agent. The high solid content acrylic varnish disclosed by the invention can be applied in bamboo and wood tableware, is combined with a high solid content coating technology and technologies of cross-linked film curing and organic solvent removal and is a new development direction for bamboo and wood coatings and coating materials.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an acrylic varnish with high solid content and its preparation method and application. Background technique [0002] There are many kinds of bamboo and wood products in contact with food, which can be divided into containers, such as barrels, cans, boxes, bowls, plates, baskets, steamers, etc.; Cork, sushi rolls, etc.; packaging, such as boxes, etc.; are one of the indispensable daily necessities in people's lives. Materials in contact with food must meet the following conditions: when in contact with food, they must not release substances that are dangerous or harmful to human health; they must not cause unacceptable changes in the composition of food; such as changes in taste, smell, color, etc. of food). [0003] Since the reform and opening up, my country's bamboo and wood products industry has achieved great development, and now it has become the world's largest producer and export...

AI Technical Summary

Problems solved by technology

[0005] On the one hand, traditional tableware coatings often use toxic toluene, cyclohexanone, isocyanate and other high paint residues; The migration of the paint or the formaldehyde and phthalates in the bamboo and wood manufacturing process gradually migrates into the food. Once people eat these contaminated foods by mistake, they will cause serious harm to the body.