Cation reaction type undercoat

Abstract

The invention relates to the field of coatings in the petrochemical industry, and particularly relates to a formula of a cationic reaction type undercoat. The cationic reaction type undercoat aims atthe defect that a coating for an external wall causes saltpetering and fades within a short period of time as the maintenance time and the maintenance degree of the cement base material are not enoughand the alkalinity or the salinity of a base material is too high. The technical scheme is as follows: the cationic reaction type undercoat comprises the following components: 51-60 wt% of water, 36-45 wt% of cationic emulsion, 1-2 wt% of a coalescing agent, 0.1-0.2 wt% of a wetting agent, 0.1-0.2 wt% of a defoaming agent, 1-1.5 wt% of an antifreezing agent, 0.1-0.3 wt% of an anticorrosion bactericide, and 0.3-0.5 wt% of a thickener. The cationic emulsion is a styrene / acrylate compound emulsion, and further comprises a cationic emulsifier. The cationic reaction type undercoat is suitable forcoating the external wall of a building.

Description

technical field [0001] The invention relates to the field of petrochemical coatings, in particular to a formula of cationic reactive primer. Background technique [0002] With the development of my country's architectural decoration industry, architectural coatings have gradually become the main material for building interior and exterior wall decoration, and the role of primers has attracted more and more attention. The mainstream primer products on the market are anionic, and its performance can basically meet the requirements of the market under normal circumstances. [0003] However, at this stage, my country's construction engineering market often has the phenomenon of rushing construction deadlines, and the low temperature and high humidity in winter in the southern region lead to insufficient maintenance time and degree of cement substrates, resulting in excessive alkalinity or high salinity of substrates, resulting in efflorescence or efflorescence of exterior wall c...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned defects that the alkalinity or high salinity of the cement substrate causes the exterior wall paint to be pan-alkaline or short-term fading, the present invention provides a cationic reactive primer, the purpose of which is to: conduct charge reaction on the surface of the substrate through the primer, Various processes, such as film formation and penetration, make these processes cooperate with each other to achieve a good sealing effect and prevent alkaline substances or salts in the substrate from being precipitated on the surface of the coating