Water-based anticorrosive coating and preparation method thereof

A water-based technology for anti-corrosion coatings, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor anti-corrosion performance, poor gloss, unsatisfactory weather resistance and corrosion resistance

Inactive Publication Date: 2021-05-14
扬州郎康汽车水性涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the water-based anti-corrosion coatings currently on the market not only have poor anti-corrosion properties, but also their weather resistance and corrosion resistance cannot meet the needs of the existing market, making the coatings prone to yellowing, low hardness and poor gloss during long-term use.

Method used

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  • Water-based anticorrosive coating and preparation method thereof
  • Water-based anticorrosive coating and preparation method thereof
  • Water-based anticorrosive coating and preparation method thereof

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preparation example Construction

[0027] In the embodiment of the present invention, water-based anti-corrosion coating and preparation method, the preparation method of water-based anti-corrosion coating is the following steps:

[0028] B1. Put the water-based acrylic emulsion and water-based polyurethane dispersion into the reaction tank for full stirring, and add a certain amount of film-forming agent. The temperature is controlled at 30-40°C, mixed evenly for 10-15min, and the speed is controlled at 1200-1500r / min, get the mixture;

[0029] B2. Then add the rust-removing pigment, anti-rust agent and filler into the mixture obtained above, and add a certain amount of deionized water, heat up to 45-55°C, rotate at 1500-1800r / min, stir and mix for 15-20min , add the wear-resistant anti-aging agent and additives, and continue to stir evenly for 20-40 minutes to obtain a water-based anti-corrosion coating;

[0030] Wherein, the antirust agent is one of zinc phosphate, zinc molybdate, aluminum tripolyphosphate...

Embodiment 1

[0041] Water-based anti-corrosion coating, the composition of this anti-corrosion coating comprises by weight: 15 parts of water-based acrylic emulsion, 10 parts of water-based polyurethane dispersion, 5 parts of film-forming agent, 1 part of anti-rust agent, 0.1 part of anti-rust pigment, 8 parts of filler, 5 parts of wear-resistant and anti-aging agent, 4 parts of auxiliary agent, and the balance is deionized water.

[0042] The filler is composed of 6 parts by weight of talcum powder, 3 parts of mica powder, 2 parts of porous quartz powder, 1 part of calcium carbonate, and 0.1 part of zinc stearate;

[0043] The preparation method of the filler is as follows: After drying the talc powder, mica powder and porous quartz powder, put them into the mixing tank and mix them evenly, then add calcium carbonate and zinc stearate in sequence, and continue to stir for 10-30 minutes to prepare got filler;

[0044]The wear-resistant and anti-aging agent is composed by weight: 5 parts o...

Embodiment 2

[0047] Water-based anti-corrosion coating, the composition of this anti-corrosion coating comprises by weight: 25 parts of water-based acrylic emulsion, 20 parts of water-based polyurethane dispersion, 8 parts of film-forming agent, 3 parts of antirust agent, 0.5 part of antirust pigment, 12 parts of filler, 10 parts of wear-resistant and anti-aging agent, 7 parts of auxiliary agent, and the balance is deionized water.

[0048] The filler is composed of 10 parts by weight of talcum powder, 5 parts of mica powder, 6 parts of porous quartz powder, 3 parts of calcium carbonate, and 0.5 part of zinc stearate;

[0049] The preparation method of the filler is as follows: After drying the talc powder, mica powder and porous quartz powder, put them into the mixing tank and mix them evenly, then add calcium carbonate and zinc stearate in sequence, and continue to stir for 10-30 minutes to prepare got filler;

[0050] The wear-resistant and anti-aging agent is composed by weight: 10 pa...

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Abstract

The invention relates to an anticorrosive coating and a preparation method thereof, and particularly discloses a water-based anticorrosive coating which comprises the components in parts by weight: 15-25 parts of a water-based acrylic emulsion, 10-20 parts of a water-based polyurethane dispersion body, 5-8 parts of a film-forming agent, 1-3 parts of an anti-rust agent, 0.1-0.5 part of an anti-rust pigment, 8-12 parts of a filler, 5-10 parts of a wear-resistant anti-aging agent, 4-7 parts of an auxiliary agent and the balance being deionized water. The anticorrosive coating disclosed by the invention has good weather resistance, yellowing resistance, high hardness, good gloss and excellent permeability, further improves the ultraviolet absorption effect of the coating, can prevent the photodegradation of the coating, reduces the photoinduced color development speed, improves the use quality of the coating, prolongs the service life of the coating, improves the smoothness and self-cleaning property of the surface of the coating, and further improves the coating scratch-resistant wear resistance and other properties; and the coating disclosed by the invention is low in odor, good in anti-corrosive effect, excellent in wear resistance and aging resistance, simple and convenient in preparation process and high in coating performance stability.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to water-based anti-corrosion coatings and a preparation method. Background technique [0002] All coatings that use water as a solvent or as a dispersion medium can be called water-based coatings. According to the type of binder in the coating, water-based coatings are divided into two categories: natural water-based coatings of natural substances or minerals (such as potassium silicate) And petrochemical water-based coatings of synthetic resins (such as acrylic resins). Only the water-based coatings of artificial synthetic resins are described here; [0003] However, the water-based anti-corrosion coatings currently on the market not only have poor anti-corrosion properties, but also their weather resistance and corrosion resistance cannot meet the needs of the existing market, making the coatings prone to yellowing, low hardness and poor gloss during long-term us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D175/04C09D5/08C09D7/63C09D7/61C09D7/65C09D7/48
CPCC09D5/08C09D133/04C09D175/04C09D7/48C09D7/61C09D7/63C09D7/65C08L75/04C08L91/06C08L23/06C08K13/04C08K7/26C08K5/132C08K5/3435C08K3/346C08K3/04C08L33/04
Inventor 王其军王向阳
Owner 扬州郎康汽车水性涂料有限公司
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