CN104017465A - Waterborne anticorrosion primer for plate spring and chassis of vehicle - Google Patents

Abstract

The invention relates to a waterborne industrial paint, and in particular relates to a waterborne anticorrosion primer which has a single component and is used for coating a plate spring, a chassis and other metal members of a vehicle in a rapid drying manner. A preparation method comprises the following steps: (1) preparing mixed material slurry; (2) grinding the mixed material slurry to reach fineness and then preparing pigment slurry; and (3) adding the rest of materials into the pigment slurry and evenly stirring so as to prepare the waterborne anticorrosion primer. The waterborne anticorrosion primer is a waterborne product which is low in VOC (Volatile Organic Compounds) content, so that the addition and the discharge of an organic solvent are greatly reduced, which is favorable for the occupational health of production workers. Thus, the waterborne anticorrosion primer has the characteristics of being green, environment-friendly and healthy. The waterborne anticorrosion primer is excellent in salt mist resistance, adhesive force, hardness, drying speed and the like, thereby meeting the requirement of product standard and being particularly prominent in adhesion resistance. Therefore, the stacking time and the transferring time of the plate spring, the chassis and the other metal members of the vehicle after the plate spring, the chassis and the other metal members are coated are shortened. The application cost of the waterborne anticorrosion primer is equivalent to that of a solvent-type product, so that the solvent-type product can be replaced with the waterborne anticorrosion primer. The waterborne anticorrosion primer is convenient and rapid to use and excellent in adhesion resistance. As a result, the waterborne anticorrosion primer has obvious economic and social benefits.

Description

A kind of waterborne anti-corrosive primer for vehicle leaf spring and chassis

Technical field

The present invention relates to a kind of water-based industrial paint, specifically, relate to a kind of for metal parts application, quick-drying single-component water-based anti-corrosion primers such as vehicle leaf spring and chassis.

Background technology

At present, the metal partss such as vehicle leaf spring and chassis are anticorrosion take solvent-borne type paint as main with paint, solvent-borne type paint itself contains the organic solvent of 30-50%, and need in use to add 10%-30% solvent to dilute, therefore the solvent evaporates of paint 50% above mass parts when dry in air, causes a large amount of VOC discharges again, both contaminate environment, having wasted again petroleum resources, also producers' Occupational health has been produced to harm simultaneously, is also the dangerous matter sources of fire.Therefore, exploitation, the friendly type water-miscible paint of environment for use be solve environmental pollution, economize on resources, the needs of Occupational health.

Current, double-component aqueous paint can meet paint requirement for the metal partss such as leaf spring and chassis aspect technical indicator, but double-component aqueous paint in use, after two components must being mixed, finish using at short notice, the situation of all finishing using with regard to curing that easily occurs not also to be able to do in time, causes waste of material, even occurs that equipment installation stops up, its use cost exceeds the solvent-borne type paint cost of current use far away, exceeds the scope of using producer to bear.Therefore exploitation can substitute solvent-borne type paint for the metal partss such as vehicle leaf spring and chassis, economic and practical single-component water-based paint product, is the certainty of market development.

Summary of the invention

The object of the invention is to, provide a kind of waterborne anti-corrosive primer for anticorrosion protection of metalwork such as vehicle leaf spring and chassis, to solve the problems of the technologies described above.

The present invention is achieved by the following technical solutions:

For the waterborne anti-corrosive primer on vehicle leaf spring and chassis, its preparation method comprises the following steps:

(1) by deionized water 25-15 part, wetting dispersing agent 0.5-0.8 part, polysiloxane defoamer 0.2-0.3 part, sanitas 0.1-0.2 part, anti-sudden strain of a muscle rust agent 0.4-0.6 part, film coalescence aid 4-6 part, pH value conditioning agent 0.2-0.1 part, compounded rustproof pigment 10-5 part, iron oxide pigment 5-15 part, functional antirust filler 25-15 part, under whipped state, drop into successively in container, mix 5-10 minute, high speed dispersion 30-50 minute under 800-1200 rev/min of speed, makes mixed slurry standby again;

(2) use shredder to be ground to 50 microns of following fineness the mixed slurry preparing, make pigment slurry standby;

(3) in pigment slurry, add modified water-soluble epoxy ester resin 30-40 part, silicone based defoamer 0.1-0.2 part, flow agent 0.2-0.3 part, associative thickener 0.3-0.6 part, be adjusted to and require viscosity, mixes, through filter-cloth filtering below 100 microns, make finished product.

beneficial effect of the present invention is: the present invention is aqueous product, and VOC content is very low, and organic solvent is used and discharge greatly reduces, and is of value to producers' Occupational health, has the feature of green, environmental protection, health; The excellent performances such as the salt spray resistance of product of the present invention, sticking power, hardness, rate of drying, reach product standard requirement, and particularly outstanding antiblocking performance, has shortened the time of piling up, transporting after the metal parts applications such as vehicle leaf spring and chassis; Product use cost of the present invention is suitable with solvent-borne type product, and alternative solvent-borne type product is easy to use, and its resistance to blocking is excellent, and economic benefit and social benefit are remarkable.

 

Embodiment

Below that the present invention is described further with reference to embodiment.

embodiment 1:

Described in the present embodiment, for the waterborne anti-corrosive primer of the metal partss such as vehicle leaf spring and chassis, color is middle grey, and its preparation method comprises the following steps:

(1) by 18 parts of deionized waters, 0.6 part of wetting dispersing agent, 0.2 part of polysiloxane defoamer, 0.1 part of sanitas, 0.5 part of agent of anti-sudden strain of a muscle rust, 5 parts of film coalescence aid, 0.2 part of pH value conditioning agent, 8 parts of compounded rustproof pigments, 10 parts of iron oxide blacks, 22 parts of functional antirust fillers, under whipped state, drop into successively in container, mix 5-10 minute, high speed dispersion 30-50 minute under 800-1200 rev/min of speed, makes mixed slurry standby again;

(2) use shredder to be ground to 50 microns of following fineness the mixed slurry preparing, make pigment slurry standby;

(3) in pigment slurry, add 35 parts of modified water-soluble epoxy ester resins, 0.2 part of silicone based defoamer, 0.2 part of flow agent, 0.4 part of associative thickener, be adjusted to and require viscosity, mixes, and through filter-cloth filtering below 100 microns, makes finished product.

embodiment 2:

Described in the present embodiment, for the waterborne anti-corrosive primer of the metal partss such as vehicle leaf spring and chassis, color is iron oxide yellow look, and its preparation method comprises the following steps:

(1) by 25 parts of deionized waters, 0.5 part of wetting dispersing agent, 0.2 part of polysiloxane defoamer, 0.1 part of sanitas, 0.6 part of agent of anti-sudden strain of a muscle rust, 4 parts of film coalescence aid, 0.2 part of pH value conditioning agent, 6 parts of compounded rustproof pigments, 12 parts of iron oxide yellow, 20 parts of functional antirust fillers, under whipped state, drop into successively in container, mix 5-10 minute, high speed dispersion 30-50 minute under 800-1200 rev/min of speed, makes mixed slurry standby again;

(2) use shredder to be ground to 50 microns of following fineness the mixed slurry preparing, make pigment slurry standby;

(3) in pigment slurry, add 30 parts of modified water-soluble epoxy ester resins, 0.2 part of silicone based defoamer, 0.2 part of flow agent, 0.5 part of associative thickener, be adjusted to and require viscosity, mixes, and through filter-cloth filtering below 100 microns, makes finished product.

embodiment 3:

Described in the present embodiment, for the waterborne anti-corrosive primer of the metal partss such as vehicle leaf spring and chassis, color is rust, and its preparation method comprises the following steps:

(1) by 20 parts of deionized waters, 0.7 part of wetting dispersing agent, 0.2 part of polysiloxane defoamer, 0.2 part of sanitas, 0.4 part of agent of anti-sudden strain of a muscle rust, 6 parts of film coalescence aid, 0.2 part of pH value conditioning agent, 5 parts of compounded rustproof pigments, 15 parts of red iron oxides, 15 parts of functional antirust fillers, under whipped state, drop into successively in container, mix 5-10 minute, high speed dispersion 30-50 minute under 800-1200 rev/min of speed, makes mixed slurry standby again;

(2) use shredder to be ground to 50 microns of following fineness the mixed slurry preparing, make pigment slurry standby;

(3) in pigment slurry, add 40 parts of modified water-soluble epoxy ester resins, 0.2 part of silicone based defoamer, 0.2 part of flow agent, 0.6 part of associative thickener, be adjusted to and require viscosity, mixes, and through filter-cloth filtering below 100 microns, makes finished product.

[experimental data]

According to concerned countries standard and vehicle leaf spring and chassis coating specification, product of the present invention has been carried out respectively to technical indicator test, performance index all reach respective standard and service requirements.

Simultaneously according to the requirement of the actual painting of leaf spring and chassis, each other piling up, can not there is inter-adhesive situation in assembling process in parts, after dry to part painting, carried out the antiblocking experiment of two aspects, one be to coating baking is dry roll off the production line after, temperature piles up at the parts of 50 ℃ of left and right, adhesion situation between inspection part after 24 hours, another is that the parts after 24 hours are piled up experiment to application seasoning, adhesion situation between inspection part after 24 hours, two experiments all do not have adhesion situation to occur, reach actual production requirement.

Concrete test index is as follows:

Claims (1)

1. for the waterborne anti-corrosive primer on vehicle leaf spring and chassis, its preparation method comprises the following steps:

(1) by modified water-soluble epoxy ester resin 30-40 part, deionized water 20-25 part, polysiloxane defoamer 0.2-0.3 part, poly carboxylic acid ammonium salt wetting dispersing agent 0.5-0.8 part, anti-sudden strain of a muscle rust agent 0.2-0.4 part, compounded rustproof pigment 10-15 part, functional antirust filler 20-25 part, iron oxide pigment 5-10 part, sanitas 0.2-0.3 part, under whipped state, drop into successively in container, mix 5-10 minute, high speed dispersion 30-50 minute under 800-1200 rev/min of speed, makes mixed slurry standby again;

(2) use shredder to be ground to 50 microns of following fineness the mixed slurry preparing, make pigment slurry standby;

(3) in pigment slurry, add silicone based defoamer 0.1-0.2 part, flow agent 0.2-0.3 part, associative thickener 0.3-0.6 part, mix, and through filter-cloth filtering below 100 microns, makes finished product.