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High anti-corrosion snow pattern powder coating and preparation method thereof

A powder coating and snow pattern technology, which is applied in powder coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of insufficient crosslinking density and poor corrosion resistance of film-forming substances, and achieve the elimination of bad odor and good corrosion resistance , Improve the effect of adhesion and weather resistance

Active Publication Date: 2020-01-17
FUJIAN WANAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For epoxy-dicyandiamide powder coatings with special texture effects, due to the insufficient crosslinking density of film-forming substances in the product, this type of powder coatings has poor corrosion resistance and is not suitable for high acid and alkali occasions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] High weather resistance snow pattern powder coating, the raw materials are counted as parts by weight, 520 parts of epoxy resin, 10 parts of multifunctional epoxy resin curing agent, 230 parts of acrylic resin, 20 parts of crosslinking accelerator, 30 parts of precipitated barium sulfate, nano 2 parts of transparent pigment, 22 parts of activated bamboo fiber powder, 7 parts of activated oyster shell powder.

[0018] The preparation method of the activated bamboo fiber powder is as follows: take 50 kg of bamboo fiber at room temperature, pulverize into flocculent, stir in 100L of 20wt% sodium hydroxide and 5wt% thiourea composite aqueous solution and filter after 24 h, and use the bamboo fiber Wash with water until neutral; then, stir the bamboo fiber in 100 L of 25 wt% hydrogen peroxide aqueous solution for 24 h, filter and wash with water; 1 h, stirred for 24 h, filtered, washed with water, and vacuum-dried at 60-62 °C for 24 h before use.

[0019] The preparation me...

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PUM

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Abstract

The invention belongs to the field of preparation of powder paint, in particular to high preservative snow pattern powder paint and a preparing method thereof. The paint is prepared from, by weight, 520 parts of epoxy resin, 10 parts of polyfunctional group epoxy resin curing agent, 230 parts of acrylic resin, 20 parts of cross-linking accelerant, 30 parts of precipitated barium sulfate, 2 parts of transparent nanometer pigment, 22 parts of activated raw bamboo fiber powder and 7 parts of activated oyster shell powder. During preparation, firstly acrylic resin, the activated raw bamboo fiber powder, the activated oyster shell powder and pigment filer are extruded to prepare powder A, so that the dispersibility of pigment filler is improved; then the powder A is thermally molten and mixed with epoxy resin and the like to prepare the snow pattern powder paint excellent in weather resistance.

Description

technical field [0001] The invention belongs to the field of powder coating preparation, and in particular relates to a high anti-corrosion snow pattern powder coating and a preparation method thereof. Background technique [0002] Powder coatings are made of low-molecular-weight resins, supplemented with additives, pigments and fillers, etc., and have a certain appearance, luster, and color after curing under certain conditions. Once the powder coating is cured, its low-molecular-weight resin becomes a body-shaped polymer with ultra-high molecular weight due to chemical cross-linking, so that it has a series of properties such as elasticity, toughness, and chemical resistance. However, after the surface of the powder coating is exposed to acid and alkali substances, "spotting" will appear and gradually "corrode and fade". Studies have shown that the spotting of powder coatings mainly starts from the pigment particles, especially where the pigment is agglomerated. is a corr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D5/03C09D7/61C09D7/62
CPCC08K2003/3045C08K2201/011C08L2205/03C08L2205/16C09D5/033C09D5/08C09D163/00C08L33/00C08L97/02C08K9/00C08K3/30C08K7/24
Inventor 嘉洪迁苏捷黄文邹良木林琳艺杨杰龙汤东结
Owner FUJIAN WANAN IND
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