Priming paint for preparing sand wall textured coating material

Abstract

The invention relates to the field of coating materials and particularly relates to priming paint for preparing a sand wall textured coating material. The priming paint for preparing the sand wall textured coating material, provided by the invention, has the advantages of good waterproofing property, high adhesive power, texture and no adverse effect on heat insulating layers of buildings. The priming paint for preparing the sand wall textured coating material, provided by the invention, contains the ingredients in parts by mass: 40-60 parts of aqueous epoxy resin, 10-15 parts of vinyl versatate, 1-5 parts of acrylic acid, 1-5 parts of emulsifier, 0.1-0.5 part of organosilicon defoamer, 0.1-0.2 part of preservative, 0.1-0.2 part of dibutyl phthalate, 0.1-0.2 part of persulfate, 1-2 parts of film forming assistant and 20-50 parts of water.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a primer for sand wall texture coatings. Background technique [0002] Primer, also called sealer, is the first coat of paint applied to interior and exterior walls before topcoating. Its main function is to close the base of the wall and block the capillary pores in the base, so as to effectively isolate the alkali of the substrate and prevent the seepage of alkali from damaging the coating. There are two types of primers: solvent-based and water-based, while water-based paint can be divided into water-based and water-soluble. [0003] At present, the primers used in the building decoration industry are mostly emulsion primers; the existing emulsion primers usually use styrene-acrylic acid copolymer emulsions. This copolymer emulsion has low film-forming density and weak permeability to the substrate, resulting in poor salting-out resistance. [0004] In addition, after the ordinary p...

AI Technical Summary

Problems solved by technology

This copolymer emulsion has low film density and weak permeability to the substrate, resulting in poor anti-salting-out effect

[0004] In addition, after the ordinary primer is formed into a film, the surface is smooth and smooth, which cannot be well matched with some topcoats with specific textures, resulting in a decrease in the appearance and texture of the topcoat, which cannot achieve the desired effect

[0005] Third, most of the existing primers use butyl acetate or xylene. If the primers containing these ingredients penetrate into the insulation layer, they will dissolve the styrene board in the insulation layer. Infiltration and dissolution destroys the insulation layer of polystyrene board, which will greatly reduce the service life of the insulation layer