CN105647295A - Aqueous anticorrosion paint and preparation method thereof - Google Patents

Abstract

The invention discloses an aqueous anticorrosion paint, which comprises the following components in percentage by weight: 22 to 38% of highly chlorinated polyethylene resin, 10 to 20% of polyurethane elastomer modified polyester resin, 3 to 5% of dihydroxymethyl butyric acid, 2.5 to 4.5% of dimethyl ethanolamine, 0.5 to 1% of dispersant, 0.3 to 1% of antifoaming agent, 1 to 2% of antiseptic, 8 to 12% of titanium dioxide, 5 to 8% of calcium chromate, 3 to 5% of magnesium phosphate, 4 to 8% of porcelain clay, 0.2 to 0.8% of anti-skinning agent, 2 to 5% of plasticizer, 0.5 to 1.5% of thickening agent, 10 to 15% of butanone, and 10 to 30% of deionized water. The paint has the advantages of short drying time, high elasticity, and strong performance on resisting acidic substances, alkaline substances, and corrosive substances, and can protect the external walls of buildings for a long time so as to prolong the service life of buildings, and the maintenance cost is low.

Description

A kind of water-based anticorrosive paint and preparation method thereof

Technical field

The present invention relates to building coating field, be specifically related to a kind of water-based anticorrosive paint and preparation method thereof.

Background technology

Along with improving constantly of China's national life level, people can select various coating that building appearance is carried out attractive, decorative when constructing building, and building is all with concrete for basic unit mostly, inside concrete has fragment of brick body of wall, after a certain time, owing to the change of outside climatic can make concrete and fragment of brick produce to expand with heat and contract with cold, thus causing that crack in various degree occurs in the coating being coated in outer layer, the phenomenon that foaming even comes off, if and select elastic coating, when expanding with heat and contract with cold, elastic coating can utilize the elasticity of its own according to temperature deformation to make up the crack brought because expanding with heat and contract with cold, can effectively prevent coating cracking. existing building wall finish paint, mostly is generic latex paint, utilizes the weatherability of paint, protects exterior wall, and building wall can be played certain protective effect by this. but, along with the deterioration of environment, the increase of various corrosive substances, contaminative in air, in precipitation, some deficiency that the protective effect of this paint is just aobvious. in the environment of high pollution, the paint film of generic latex paint quickly can tarnish, and is run ragged, and decorative effect is remarkably decreased.

Summary of the invention

The technical problem to be solved is: the preparation method providing water-based anticorrosive paint that a kind of high resiliency, acid-proof alkali prevention performance are good and this kind of coating.

In order to reach above-mentioned technique effect, the technical solution used in the present invention is:

A kind of water-based anticorrosive paint, with the total amount of described water-based anticorrosive paint for benchmark, each component is respectively as follows: HCPE 22-38% by mass percentage, polyurethane elastomer modified polyester resin 10-20%, dimethylolpropionic acid 3%-5%, dimethylethanolamine 2.5-4.5%, dispersant 0.5%-1%, defoamer 0.3-1%, preservative 1-2%, titanium dioxide 8-12%, calcium chromate 5-8%, magnesium phosphate 3-5%, china clay 4-8%, anti skinning agent 0.2-0.8%, plasticizer 2-5%, thickening agent 0.5-1.5%, butanone 10-15%, deionized water 10-30%. further, described HCPE is chlorinty is 64-65%, and viscosity is the medium viscosity HCPE-L type of 21��24.

Further, described dispersant is dispersing agent MF.

Further, the pH value of described water-based anticorrosive paint is 7.5-8.5.

Further, each constituent mass percentage ratio of described water-based anticorrosive paint is: HCPE 25%, polyurethane elastomer modified polyester resin 12%, dimethylolpropionic acid 3.5%, dimethylethanolamine 3%, dispersant 1%, defoamer 0.5%, preservative 1%, titanium dioxide 8%, calcium chromate 6%, magnesium phosphate 4%, china clay 5%, anti skinning agent 0.5%, plasticizer 3%, thickening agent 1%, butanone 10%, deionized water 16.5%.

Further, each constituent mass percentage ratio of described water-based anticorrosive paint is: HCPE 24%, polyurethane elastomer modified polyester resin 12%, dimethylolpropionic acid 4%, dimethylethanolamine 3.5%, dispersant 1%, defoamer 0.8%, preservative 1.2%, titanium dioxide 9%, calcium chromate 7%, magnesium phosphate 5%, china clay 6%, anti skinning agent 0.7%, plasticizer 3.6%, thickening agent 1.2%, butanone 11%, deionized water 10%.

A kind of preparation method of water-based anticorrosive paint, the processing step including following:

A. the total amount according to required water-based anticorrosive paint, by the mass percent shared by each component, measure the HCPE of corresponding amount, polyurethane elastomer modified polyester resin, dimethylolpropionic acid, dimethylethanolamine, dispersant, defoamer, preservative, titanium dioxide, calcium chromate, magnesium phosphate, china clay, anti skinning agent, plasticizer, thickening agent, butanone, deionized water;

B. the dispersant measured in step A, defoamer, dimethylolpropionic acid are sequentially added in butanone, stir;

C. the deionized water in step A, titanium dioxide, calcium chromate, magnesium phosphate, china clay are sequentially added in the solution of step B, disperse 15min with high speed dispersor;

D. the HCPE in step A, polyurethane elastomer modified polyester resin, plasticizer, preservative, anti skinning agent, dimethylethanolamine, thickening agent are sequentially added in the solution of step C, stir; E. by the solution fill of step D, the finished product preparation work of water-based anticorrosive paint is completed.

Compared with prior art, the invention has the beneficial effects as follows: drying time is short acid and alkalescence corrosive substance is had good resistance, it is possible to permanent protection external wall, extend the service life of building, be particularly well-suited to the area that air pollution is serious. Good toughness, water-fast, wear-resistant, impact resistant, it is hardly damaged, maintenance cost is low.

Detailed description of the invention

The polyurethane elastomer modified polyester resin of the present invention is purchased from Dongguan Zhuo Chang material trade Co., Ltd, model STARHY-960; HCPE is purchased from Fenghua City Yue Loong new chemical materials company limited, and model is HCPE-L; Defoamer is purchased from Shanghai dictorial advisor's chemistry Science and Technology Ltd., and model is BD-710; Thickening agent adopts Alkali-soluble acrylic's thickening agent of hydrophobically modified; Preservative is LXE; Plasticizer is DOP; Anti skinning agent is KL-842.

Embodiment 1:

A kind of water-based anticorrosive paint, its component and the mass percent shared by each component be: HCPE 22%, polyurethane elastomer modified polyester resin 10%, dimethylolpropionic acid 3%, dimethylethanolamine 2.5%, dispersant 0.5%, defoamer 0.5%, preservative 1%, titanium dioxide 8%, calcium chromate 5%, magnesium phosphate 3%, china clay 4%, anti skinning agent 0.2%, plasticizer 2%, thickening agent 0.5%, butanone 10%, deionized water 27.8%. Preparation method: according to the proportioning of amount described above, dispersant, defoamer, dimethylolpropionic acid are sequentially added in butanone, stir, successively water, titanium dioxide, calcium chromate, magnesium phosphate, china clay are added wherein again, 15min is disperseed with high speed dispersor, then successively HCPE, polyurethane elastomer modified polyester resin, plasticizer, preservative, anti skinning agent, dimethylethanolamine, thickening agent addition are wherein stirred, can be prepared by this water-based anticorrosive paint.

Embodiment 2:

A kind of water-based anticorrosive paint, its component and the mass percent shared by each component be: HCPE 25%, polyurethane elastomer modified polyester resin 12%, dimethylolpropionic acid 3.5%, dimethylethanolamine 3%, dispersant 1%, defoamer 0.5%, preservative 1%, titanium dioxide 8%, calcium chromate 6%, magnesium phosphate 4%, china clay 5%, anti skinning agent 0.5%, plasticizer 3%, thickening agent 1%, butanone 10%, deionized water 16.5%. Its preparation method is with embodiment 1.

Embodiment 3:

A kind of water-based anticorrosive paint, its component and the mass percent shared by each component be: HCPE 24%, polyurethane elastomer modified polyester resin 12%, dimethylolpropionic acid 4%, dimethylethanolamine 3.5%, dispersant 1%, defoamer 0.8%, preservative 1.2%, titanium dioxide 9%, calcium chromate 7%, magnesium phosphate 5%, china clay 6%, anti skinning agent 0.7%, plasticizer 3.6%, thickening agent 1.2%, butanone 11%, deionized water 10%. Its preparation method is with embodiment 1.

The finished product prepared by embodiment 1-3 carries out following table properties test, and result is in Table 1:

Performance	Embodiment 1	Embodiment 2	Embodiment 3
				Drying time, h	2	2	2
Normality elastic extension, %	200	250	300
				Hot strength, MPa	1.45	1.99	2.30
Alkali resistance, (3% ammonia spirit, h)	800	900	1000
				Acid resistance, (3% hydrochloric acid solution, h)	300	400	450

From table 1, high by the coating elasticity of the present invention, have excellent elastic extension and hot strength, in acid-fast alkali-proof, antiseptic property is good.

Above-described embodiment is only the explanation to product of the present invention; not the present invention is made any pro forma restriction; within without departing from technical scheme scope, any technology contents utilizing the disclosure above makes the equivalent of simple transformation, all belongs to protection scope of the present invention.

Claims (7)

1. a water-based anticorrosive paint, it is characterized in that, with the total amount of described water-based anticorrosive paint for benchmark, each component is respectively as follows: HCPE 22-38% by mass percentage, polyurethane elastomer modified polyester resin 10-20%, dimethylolpropionic acid 3%-5%, dimethylethanolamine 2.5-4.5%, dispersant 0.5%-1%, defoamer 0.3-1%, preservative 1-2%, titanium dioxide 8-12%, calcium chromate 5-8%, magnesium phosphate 3-5%, china clay 4-8%, anti skinning agent 0.2-0.8%, plasticizer 2-5%, thickening agent 0.5-1.5%, butanone 10-15%, deionized water 10-30%.

2. water-based anticorrosive paint as claimed in claim 1, it is characterised in that described HCPE is chlorinty is 64-65%, and viscosity is the medium viscosity HCPE-L type of 21��24.

3. water-based anticorrosive paint as claimed in claim 1, it is characterised in that described dispersant is dispersing agent MF.

4. water-based anticorrosive paint as claimed in claim 1, it is characterised in that the pH value of described anticorrosive paint is 7.5-8.5.

5. water-based anticorrosive paint as claimed in claim 1, it is characterized in that, each constituent mass percentage ratio of described anticorrosive paint is: HCPE 25%, polyurethane elastomer modified polyester resin 12%, dimethylolpropionic acid 3.5%, dimethylethanolamine 3%, dispersant 1%, defoamer 0.5%, preservative 1%, titanium dioxide 8%, calcium chromate 6%, magnesium phosphate 4%, china clay 5%, anti skinning agent 0.5%, plasticizer 3%, thickening agent 1%, butanone 10%, deionized water 16.5%.

6. water-based anticorrosive paint as claimed in claim 1, it is characterized in that, each constituent mass percentage ratio of described anticorrosive paint is: HCPE 24%, polyurethane elastomer modified polyester resin 12%, dimethylolpropionic acid 4%, dimethylethanolamine 3.5%, dispersant 1%, defoamer 0.8%, preservative 1.2%, titanium dioxide 9%, calcium chromate 7%, magnesium phosphate 5%, china clay 6%, anti skinning agent 0.7%, plasticizer 3.6%, thickening agent 1.2%, butanone 11%, deionized water 10%.

7. the preparation method of water-based anticorrosive paint as claimed in claim 1, it is characterised in that include following processing step:

A. the total amount according to required anticorrosive paint, by the mass percent shared by each component, measure the HCPE of corresponding amount, polyurethane elastomer modified polyester resin, dimethylolpropionic acid, dimethylethanolamine, dispersant, defoamer, preservative, titanium dioxide, calcium chromate, magnesium phosphate, china clay, anti skinning agent, plasticizer, thickening agent, butanone, deionized water;

B. the dispersant measured in step A, defoamer, dimethylolpropionic acid are sequentially added in butanone, stir;

C. the deionized water in step A, titanium dioxide, calcium chromate, magnesium phosphate, china clay are sequentially added in the solution of step B, disperse 15min with high speed dispersor;

D. the HCPE in step A, polyurethane elastomer modified polyester resin, plasticizer, preservative, anti skinning agent, dimethylethanolamine, thickening agent are sequentially added in the solution of step C, stir; E. by the solution fill of step D, the finished product preparation work of water-based anticorrosive paint is completed.