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Modified barium sulfate for heavy anti-corrosion coating

A barium sulfate and heavy-duty anti-corrosion technology, applied in the direction of anti-corrosion coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of particle size distribution, modification effect, anti-sedimentation and dispersibility that cannot meet the ideal requirements, and achieve bright color , high whiteness, and the effect of increasing the amount of filler

Inactive Publication Date: 2020-08-25
JIANGSU QUNXIN POWDER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, conventional barium sulfate, its particle size distribution, modification effect, anti-sedimentation and dispersibility cannot meet the ideal requirements

Method used

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  • Modified barium sulfate for heavy anti-corrosion coating
  • Modified barium sulfate for heavy anti-corrosion coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Screen the raw barium sulfate powder, the particle size of the selected raw powder is D97≤10μm, pass 100 parts of the raw powder through the surface processor heating device, and heat up the raw barium sulfate powder inside; when the raw barium sulfate powder is heated to 100°C Add 1 to 5 parts of stearic acid, when the temperature rises to 100°C, the moisture in the original powder can be removed, reducing the water content in the product; when the temperature of the material in the surface processor rises to 125°C, the surface Add 0.5-1 part of isopropyl triisostearyl titanate into the processor, continue to stir and mix the mixture at 125°C for 2-5 minutes before discharging.

[0022] The modified barium sulfate obtained in Example 1 has an average particle size of less than 2.0 μm, a maximum particle size of less than 5 μm, and a content of 2 μm greater than 25%; oil absorption is less than 10 g / 100 g, and the specific gravity is 4 to 4.5 g / cm 3 ; pH value 6-9. Con...

Embodiment 2

[0025] The product prepared in Example 1 is used in heavy-duty anti-corrosion coatings. The heavy-duty anti-corrosion coatings contain: 23 parts of epoxy, 14 parts of polyurethane, 11 parts of zinc-rich primer, 9 parts of alkyd, acrylic chloride 8 parts of rubber, 2 parts of fluorocarbon, 1 part of polysiloxane, 25 parts of modified barium sulfate obtained in Example 1.

Embodiment 3

[0026] Embodiment 3 (comparative example)

[0027] The original powder of barium sulfate is used in heavy-duty anti-corrosion coatings. The heavy-duty anti-corrosion coatings contain: 23 parts of epoxy, 14 parts of polyurethane, 11 parts of zinc-rich primer, 9 parts of alkyd, and 8 parts of acrylic chlorinated rubber , 2 parts of fluorocarbon, 1 part of polysiloxane, 25 parts of barium sulfate raw powder.

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Abstract

The invention discloses modified barium sulfate for heavy anti-corrosion coating. The average particle size of the modified barium sulfate is smaller than 2.0 micrometers, the maximum particle size ofthe modified barium sulfate is smaller than 5 micrometers, and the content of the modified barium sulfate with the particle size being 2 micrometers is larger than 25%. The oil absorption amount is less than 10g / 100g, and the specific gravity is 4-4.5 g / cm < 3 >; and the pH value is 6-9. The modified barium carbonate is obtained by taking barium sulfate raw powder as a raw material and modifyingthe powder. The modified barium sulfate disclosed by the invention is used as a filler of a heavy anti-corrosion coating, so that the heavy anti-corrosion coating is fine, uniform and high in whiteness. And the strength, acid and alkali resistance, water resistance and the like of a paint film can be improved.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a modified barium sulfate used for heavy-duty anti-corrosion coatings. Background technique [0002] Barium sulfate is white or off-white crystalline powder. It is an important barium-containing mineral. It has strong chemical inertness, good stability, acid and alkali resistance, high density, moderate hardness, high specific gravity, high whiteness, and can absorb harmful rays ( X-rays and Y-rays) and so on. It has the luster of glass, non-magnetic and non-toxic. And it is an environmentally friendly material, so it is widely used in various coatings, medium and high-end inks, rubber, paper, ceramics, cosmetics and other fields. Refined barium sulfate is also used in medium and high-grade paints, engineering plastics (housing of household appliances, building material plastics), high-grade insulating rubber, rubber products, cathode expansion rods of batteries, and gla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/04C09C3/08C09D163/00C09D175/04C09D115/02C09D167/08C09D5/10C09D7/45
CPCC08K2003/3045C08L2205/035C09C1/027C09C3/006C09C3/043C09C3/08C09D5/103C09D163/00C09D7/45C09D7/69C08L75/04C08L15/02C08L67/08C08L83/04C08K9/04C08K3/30
Inventor 张国如
Owner JIANGSU QUNXIN POWDER TECH CO LTD
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