CN109608916A - A kind of zinc powder-free water-based primer - Google Patents

Abstract

A kind of zinc powder-free water-based primer of the present invention, raw material and raw material weight percentage composition are as follows: lithium metasilicate 40-50%, ferrophosphorus powder 0.1-1%, zinc-iron powder 0.1-3%, entering dimethylethanolamine 0.1-3%, sodium methyl silicate 0.1-3%, butyl titanate 40-60%.The present invention solves the problems, such as solve the health hazard to construction personnel and the pollution to environment because of the secondary rust removal of zinc powder bring, meanwhile, in the case where ideal conditions is can't bear in surface treatment, adhesive force is substantially better than inorganic zinc class product.

Description

A kind of zinc powder-free water-based primer

Technical field

The present invention relates to a kind of aqueous priming paint more particularly to a kind of zinc powder-free water-based primers, belong to technical field of coatings.

Background technique

Currently as the anti-corrosion and shop primer of iron structure, zinc rich primer is the most universal, important.Zinc-rich paint is mainly The anti-corrosion of various iron structures is used in the form of zinc rich primer, because being rich in a large amount of electrochemistry rust resisting pigment-zinc in its formula Powder, therefore referred to as zinc-rich paint.

Zinc-rich paint paint film is hard, adhesive force is good, antirust ability is strong, with excellent three proofings (moisture-proof, salt spray proof, mould proof) Performance and oxidation-resistant corrosion-resistant performance；Excellent cathodic protection effect and static conductive effect, have no adverse effects to welding performance, can It is used with most of coatings system, has become most universal, most important priming paint in the ferrous metal corrosion protections application field such as steel.

Zinc rich primer can be divided into two major classes in production and application aspect, i.e., using inorganic matters such as silicates as the inorganic of adhesive Zinc rich primer and using epoxy resin as the organic zinc-rich primer of adhesive.Be used for corrosion-resistant field when, they all must satisfy with Lower requirement: 1. must carry out blasting treatment just by painting ground can guarantee its construction quality: since the zinc powder in priming paint wants same steel It is in close contact its electro-chemical protection of competence exertion, therefore the pre-treatment of matrix surface is required stringent；2. it is appropriate to need to be equipped with Intermediate coat and finishing coat: zinc rich primer paint film is usually relatively thin, and the influence vulnerable to external environment medium, therefore does not make individually generally With need to be equipped with intermediate coat and finishing coat appropriate, reach defined film thickness.

Priming paint is the first layer of paint system, for improving the adhesive force of finishing coat, the richness for increasing finishing coat, providing alkali resistant Property, anti-corrosion function etc. is provided, while can guarantee the uniform pickup of finishing coat, paint system is made to play optimum efficiency.

Aqueous priming paint is the abbreviation of Water-soluble environment-friendlyanticorrosive metal protection priming paint, is with groups such as water-base resin, lead-free pigment, water At having the characteristics that fast drying, protective performance are excellent etc., can be used for the protective underlayer coating of metal substrate.Aqueous priming paint coating can It is constructed using the methods of dip-coating, showering, spraying, the painting of metal substrate suitable for industrial equipment, the vehicles and the product for civilian use Decorations, the protection especially suitable for exporting steel surface are covered with paint, lacquer, colour wash, etc..

Since the content of zinc powder in zinc-rich paint (paint) is between 85-95%, it is easy to produce secondary flash rusting；It derusts to ground It is required that high；Since zinc powder is a kind of mineral metal products of valuableness, price skyrockets from 10 yuan/kg to 30 yuan/kg or more；Construction party is come Say: to substrate surface treatment must sandblasting ball blast reach Sa2.5 grades of mechanical derusting or more；Roughness within 50~100 μm, and Cover connection paint is applied in the most short time, otherwise can generate secondary flash rusting, it is high for derusting requirement, to the requirement of personnel's labor protection Sternly；And it is expensive.

Although inorganic zinc rich paint has the advantages that fast drying, resistant to high temperature, the paint film of zinc rich paint is in electric welding cutting flame It when operation, has a large amount of zinc and overflows, the steam of generation brings serious harm to the health of operating personnel, and operator holds Easily cause hot zinc disease.

Therefore, this field is developed a kind of easy for construction, three proofings (moisture-proof, salt spray proof, mould proof) and is had excellent performance, corrosion-resistant, The needs of the good zinc powder-free water-based primer of salt spray resistance.The preparation of the zinc powder-free water-based primer and work progress, especially It is that should avoid overflowing zinc in electric welding cutting flame operating process, causes hot zinc disease.

Summary of the invention

In order to solve the above-mentioned prior art problems, the present invention uses following scheme:

A kind of zinc powder-free water-based primer, raw material and raw material weight percentage composition are as follows:

Lithium metasilicate 40-50%；

Ferrophosphorus powder 0.1-1%；

Zinc-iron powder 0.1-3%；

Enter dimethylethanolamine 0.1-3%；

Sodium methyl silicate 0.1-3%；

Butyl titanate 40-60%.

The present invention solves the problems, such as to solve because of the secondary rust removal of zinc powder bring health hazard to construction personnel and right The pollution of environment, meanwhile, in the case where ideal conditions is can't bear in surface treatment, adhesive force is substantially better than inorganic zinc class product.

Specific embodiment

Below in conjunction with specific embodiment, the present invention will be described in detail, herein illustrative examples and explanation of the invention For explaining the present invention, but it is not as a limitation of the invention.

Embodiment

A kind of zinc powder-free water-based primer of the present invention, raw material and raw material weight percentage composition are as follows: lithium metasilicate 45%, Ferrophosphorus powder 0.5%, zinc-iron powder 0.5% enter dimethylethanolamine 1%, sodium methyl silicate 2%, butyl titanate 51%.

The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as At all equivalent modifications or change, should be covered by the claims of the present invention.

Claims (1)

1. a kind of zinc powder-free water-based primer, which is characterized in that its raw material and raw material weight percentage composition are as follows:

Lithium metasilicate 40-50%；

Ferrophosphorus powder 0.1-1%；

Zinc-iron powder 0.1-3%；

Enter dimethylethanolamine 0.1-3%；

Sodium methyl silicate 0.1-3%；

Butyl titanate 40-60%.