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Heavy-duty epoxy coating formulation and preparation method thereof

An epoxy coating, heavy-duty anti-corrosion technology, used in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of precipitation and agglomeration, acid and alkali resistance can not meet the requirements, and affect the appearance, and achieve chemical corrosion resistance. Excellent, excellent anti-sag performance, ensure the effect of beautiful condition

Inactive Publication Date: 2018-02-23
CHENGDU YULONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most epoxy coatings have relatively good anti-corrosion properties, but when the pH value of the epoxy coating environment is higher than a certain value, such as in the use of chemical plants and other environments, the acid and alkali resistance of most epoxy coatings The performance cannot meet the requirements, thus affecting the service life of epoxy coatings, and even more harmful
In addition, most of the current epoxy coatings have relatively low viscosity. After a long time of storage, some solid pigments and fillers in the coating are prone to precipitate and agglomerate, and are prone to sagging when painting, that is, affecting Use and affect the appearance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 21g of bentonite and 125g of solvent into a beaker, stir with a glass rod for preliminary mixing, and then disperse with a disperser for 5 minutes, so that the bentonite is evenly dispersed in the solvent to obtain a flocculent suspension of bentonite, which is used as a new solvent for coatings. Add 3.5g dispersant, 3.5g defoamer, 2.8g leveling agent, 2.8g silane coupling agent successively in the new solvent that makes, stir and mix evenly, then add 350g epoxy 128 resin, agitator high-speed stirs 15 Minutes, after the dispersion is uniform, reduce the stirring speed, and add 105g iron red powder, 16g rutile titanium dioxide, 157.5g kaolin, 157.5g sericite powder and 210g high calcium powder in turn while stirring at medium and low speed, continue to Stir at high speed for 15 minutes to disperse evenly to obtain a coarse coating material. Then use a three-roll mill to grind the coarse material 4 times to obtain a fine material with a fineness of 15-20 microns. Use ...

Embodiment 2

[0022] Add 20g of bentonite and 130g of solvent into a beaker, stir with a glass rod for initial mixing, and then use a disperser to disperse for 5 minutes, so that the bentonite is evenly dispersed in the solvent to obtain a flocculent bentonite suspension, which is used as a new solvent for coatings. Add 3.5g dispersant, 3.2g defoamer, 2.8g leveling agent, 2.8g silane coupling agent successively in the new solvent that makes, stir and mix evenly, then add 350g epoxy 128 resin, agitator high-speed stirs 15 Minutes, after the dispersion is uniform, reduce the stirring speed, add 100g iron red powder, 15.75g rutile titanium dioxide, 155g kaolin, 155g sericite powder and 210g high-calcium powder in sequence while stirring at medium and low speed, continue to high speed after the feeding is completed Stir for 15 minutes to make it uniformly dispersed to obtain a coarse coating material. Then use a three-roll mill to grind the coarse material 4 times to obtain a fine material with...

Embodiment 3

[0024] Add 25g of bentonite and 140g of solvent into a beaker, stir with a glass rod for preliminary mixing, and then disperse with a disperser for 5 minutes, so that the bentonite is evenly dispersed in the solvent to obtain a flocculent bentonite suspension, which is used as a new solvent for coatings. Add 4.0g dispersant, 3.8g defoamer, 3.2g leveling agent, 3.2g silane coupling agent in the prepared new solvent successively, stir and mix evenly, then add 400g epoxy 128 resin, stirrer high-speed stirring 15 Minutes, after the dispersion is uniform, reduce the stirring speed, and add 120g iron red powder, 18g rutile titanium dioxide, 180g kaolin, 180g sericite powder and 250g high-calcium powder in sequence while stirring at medium and low speed, and continue to stir at high speed after the addition is complete Make it disperse evenly for 15 minutes, and obtain the coating coarse material. Then use a three-roll mill to grind the coarse material 4 times to obtain a fine materi...

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Abstract

The invention discloses a heavy-duty epoxy coating formulation and a preparation method thereof. The heavy-duty epoxy coating formulation comprises, by mass, 35-40 parts of epoxy resin, 28-32 parts ofa curing agent, 10.5-12 parts of iron oxide red powder, 1.5-1.8 parts of titanium dioxide, 20-25 parts of high-calcium powder, 15-18 parts of kaolin, 15-18 parts of sericite powder, 2-2.5 parts of bentonite, 17.8-20 parts of a solvent, 0.35-0.4 part of a dispersing agent, 0.35-0.4 part of an antifoaming agent, 0.28-0.32 part of a leveling agent and 0.28-0.32 part of a silane coupling agent. The heavy-duty epoxy coating is great in resistance to acid, alkali and chemical corrosion and excellent in corrosion resistance and sag resistance, so that after-coating attractiveness can be guaranteed.In addition, the coating is in a fake thick state and capable of preventing precipitation of solid pigments and filler (such as high-calcium powder) in the coating in long-term placement.

Description

technical field [0001] The invention relates to the technical field of chemical preparation, in particular to a formulation and preparation of a heavy-duty anti-corrosion epoxy coating with excellent acid and alkali resistance and chemical corrosion resistance, excellent anti-corrosion effect, and excellent anti-sedimentation and anti-sagging properties method. Background technique [0002] Due to its advantages of convenient construction, low cost, and high added value, coatings have been widely used in various industries such as agriculture, national defense, scientific research, construction, machinery, electronic appliances, and food packaging. Compared with polyurethane and some new polyurea coatings, epoxy coatings are cheaper and are used in a larger number in chemical, construction, ship and other fields. At present, most epoxy coatings have relatively good anti-corrosion properties, but when the pH value of the epoxy coating environment is higher than a certain val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/63
CPCC08K3/34C08K3/346C08K5/54C08K9/04C08K13/06C08K2003/2241C08K2003/2272C08K2003/265C09D5/08C09D163/00
Inventor 叶锐马路张路卢克涛刘铁
Owner CHENGDU YULONG CHEM
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