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Nanometer attapulgite composite waterborne epoxy anticorrosive coating and preparation method thereof

A technology of nano-attapulgite and water-based epoxy, which is applied in the field of coatings, can solve the problems of poor anti-corrosion performance of anti-corrosion coatings, easy on-site cracking and peeling of coatings, etc., and achieves abundant reserves, is conducive to environmental protection, and is safe and convenient to use. Effect

Active Publication Date: 2016-01-06
西北永新涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a nano-attapulgite composite water-based epoxy anti-corrosion coating to solve the problem that existing anti-corrosion coatings are prone to field cracking, blistering, peeling, rusting, etc. due to the long-term influence of natural environmental factors Phenomenon, leading to the problem of poor anticorrosion performance of anticorrosion coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. Preparation of component A:

[0045] Add 90.0kg of E51 liquid epoxy resin into a clean dispersing mixer, stir at a speed of 500r / min, add 10.0kg of epoxy reactive diluent 501A, stir evenly, and filter and pack.

[0046] 2. Preparation of component B: water-based epoxy resin curing agent, defoamer and tap water are added twice;

[0047] (1) Add 15.0kg of water-based epoxy resin curing agent to a clean dispersion mixer, start stirring, and at a speed of 500r / min, add 1.0kg of dispersant, 0.2kg of leveling agent, and 0.2kg of defoamer in sequence , stir evenly;

[0048] (2) At a speed of 500r / min, add 15kg of tap water and stir evenly;

[0049] (3) At the speed of 700r / min, add 1kg of anti-scratch agent D9 in turn, 5.0kg of pigments (titanium white and carbon black), 5kg of zinc phosphate, 3.0kg of talc powder of 1250 mesh, and natural barium sulfate of 1250 mesh 9.0kg, attapulgite 15.0kg, increase the stirring speed to 900r / min, stir at high speed until uniform;

...

Embodiment 2

[0054] The preparation method of attapulgite in embodiment 2-embodiment 1:

[0055] After weathering and crushing the attapulgite raw ore, fully mix it with 0.08kg sodium aluminum phosphate and 0.07kg polyethylene glycol, then grind it with a double-roll mill, and then disperse the mixture at a solid-to-liquid ratio of 1:5 In water, the instant high-pressure treatment is carried out at 5 MPa to obtain nano-attapulgite with rod crystal dispersion and surface functional modification.

[0056] "Performance Testing"

[0057] At 23°C, apply the water-based epoxy anti-corrosion material on the steel material by brushing, rolling, or spraying. After curing, the ground will be smooth, seamless, wear-resistant, compressive, and corrosion-resistant. Coating with excellent performance.

[0058] The waterborne epoxy anticorrosion paint prepared by embodiment 1, the prepared paint film performance test is as follows:

[0059] According to the standard HG / T4759-2014, the state in the con...

Embodiment 3

[0073] 1. Preparation of component A:

[0074] Add 85.0kg of E44 epoxy resin into a clean dispersing mixer, start stirring, and add 15.0kg of epoxy reactive diluent 501A at a speed of 600r / min, stir evenly, and then filter and pack.

[0075] 2. Preparation of component B: water-based epoxy resin curing agent, defoamer and tap water are added twice;

[0076] (1) Add 10.0kg of water-based epoxy resin curing agent to a clean dispersion mixer, start stirring, and at a speed of 600r / min, add 0.5kg of dispersant, 0.4kg of leveling agent, and 0.15kg of defoamer in sequence , stir evenly;

[0077] (2) At a speed of 600r / min, add 15kg of tap water and stir evenly;

[0078] (3) At a speed of 800r / min, add 0.5kg of anti-scratch agent D9, 6.0kg of pigments (phthalocyanine green and medium yellow), 4kg of zinc phosphate, 8.0kg of talc powder of 1000 mesh, and natural sulfuric acid of 1000 mesh Barium 5.0kg, attapulgite 20.0kg, increase the stirring speed to 1000r / min, stir at high speed...

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Abstract

The invention discloses a nanometer attapulgite composite waterborne epoxy anticorrosive coating and a preparation method thereof. The problems that the corrosion resistance of an existing anticorrosive coating is poor due to the fact that the existing anticorrosive coating is likely to be cracked, foamed, peeled off, rusted and the like when affected by natural environmental factors for a long time re solved. The coating is composed of a component A and a component B. The component A is prepared from, by mass, 85-95 parts of liquid epoxy resin and 5-15 parts of epoxy activated diluent. The component B is prepared from, by mass, 25-35 parts of a water-borne epoxy resin, 0.5-1.5 parts of a dispersing agent, 0.2-0.5 part of a flatting agent, 0.5-1.5 parts of a scratch resistant agent, 4-6 parts of zinc phosphate, 4-6 parts of pigment, 3-6 parts of talcum powder, 5-10 parts of barium sulfate, 10-20 parts of attapulgite, 0.3-0.5 part of a defaming agent, and 25-35 parts of water. The obtained coating has the good construction performance, can be used in the humidity environment, is a low-VOC product and meets the environmental protection concept.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a nano attapulgite composite water-based epoxy anticorrosion coating. Background technique [0002] When the surface of steel and other substrates is directly coated with water-based paint, flash rust will occur on the surface of the substrate during the drying process of the coating film. This rust phenomenon mainly occurs on the newly activated steel surface or the corroded interface. The formation of flash rust It is mainly related to the dispersion medium in the water-based paint. When preparing the paint, the water used is ordinary tap water instead of deionized water, which makes the paint form an electrolyte. When the paint is coated on the steel substrate, it will Countless small primary batteries are formed on the iron surface, that is, electrochemical corrosion occurs, resulting in the formation of flash rust. [0003] At present, the existing anti-corrosion coating technology ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/00C09D7/12
Inventor 马小芳李华明王爱勤许玉霞王文波丁勇张安杰杨康石宝萍
Owner 西北永新涂料有限公司