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Hydrophobic self-cleaning powder coating and preparation method thereof

A powder coating and hydrophobic technology, applied in powder coatings, anti-corrosion coatings, polyester coatings, etc., can solve the problems of anti-fouling, anti-corrosion, and self-cleaning performance that need to be further improved, unfavorable for large-scale promotion, and high cost.

Pending Publication Date: 2022-02-01
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Powder coatings have the advantages of strong adhesion, high hardness, and good wear resistance. They are widely used in modern industrial products. Powder coatings have good decorative properties, but their stain resistance, anti-corrosion, and self-cleaning properties have yet to be improved. improve
[0004] At present, most of the self-cleaning powder coatings use fluorine-containing compounds to improve the anti-fouling and hydrophobic properties, and the cost is high, which is not conducive to large-scale promotion

Method used

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  • Hydrophobic self-cleaning powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of hydrophobic self-cleaning powder coating, prepared according to the following method:

[0018] Step 1: Mix 77% powder resin carboxy-terminated polyester resin, 10% Lycopodium spore powder, 7% curing agent triglycidyl isocyanurate, 3% additive leveling agent, 1% defoamer Add 2% filler hydrophobic nano-silica to the high-speed mixer for pre-mixing; then,

[0019] Step 2, feeding the mixed materials into a screw extruder for melt extrusion, tableting, cooling and crushing;

[0020] Step 3: Finely pulverize the crushed materials and sieve to obtain a hydrophobic self-cleaning powder coating.

Embodiment 2

[0022] A kind of hydrophobic self-cleaning powder coating, prepared according to the following method:

[0023] Step 1: Mix 70% thermosetting epoxy resin, 15% Lycopodium spore powder, 4% dicyandiamide curing agent, 1% imidazole accelerator, 1% leveling agent, 6% kaolin and 3% Titanium dioxide is pre-mixed by a high-speed mixer; then,

[0024] Step 2: Feed the mixed material into a screw extruder for melt extrusion, tablet pressing, cooling and crushing;

[0025] Step 3: finely pulverize the crushed material, and then obtain a hydrophobic self-cleaning powder coating after finely pulverizing and sieving.

Embodiment 3

[0027] A kind of hydrophobic self-cleaning powder coating, prepared according to the following method:

[0028] Step 1: Mix 60% carboxyl-terminated polyester resin, 15% silicone-modified hydroxyacrylic resin, 10% Lycopodium spore powder, 7% curing agent, 3% leveling agent, 3% titanium dioxide and 2% talcum powder is pre-mixed by a high-speed mixer; then,

[0029] Step 2: Feed the mixed material into a screw extruder for melt extrusion, tablet pressing, cooling and crushing;

[0030] Step 3: finely pulverize the crushed material, and then obtain a hydrophobic self-cleaning powder coating after finely pulverizing and sieving.

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Abstract

The invention relates to a hydrophobic self-cleaning powder coating and a preparation method thereof, the hydrophobic self-cleaning powder coating comprises the following components in percentage by mass: 45%-85% of powder resin, 1%-20% of lycopodium spore powder, 2%-10% of curing agent, 0.5%-5% of assistant, and 3-20% of filler the total mass based on the total mass. The powder coating disclosed by the invention is hydrophobic and environment-friendly, can be used as a self-cleaning powder coating and an anti-corrosion and anti-rust powder coating, and has good economic benefits.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to a hydrophobic self-cleaning powder coating and a preparation method thereof. [0002] technical background [0003] In recent years, with the improvement of environmental protection requirements, people pay more and more attention to the emission of VOC gas from coatings. Compared with solvent-based coatings and water-based coatings, powder coatings do not contain solvents and do not release VOCs. They are a new type of green and environmentally friendly coatings. Powder coatings have the advantages of strong adhesion, high hardness, and good wear resistance. They are widely used in modern industrial products. Powder coatings have good decorative properties, but their stain resistance, anti-corrosion, and self-cleaning properties still need to be further improved. improve. [0004] At present, most of the self-cleaning powder coatings use fluorine-containing compounds to...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D163/00C09D175/04C09D133/00C09D5/03C09D5/08C09D7/61C09D7/40
CPCC09D167/00C09D163/00C09D175/04C09D133/00C09D5/033C09D5/08C08K2201/011C08K2003/2241C08K3/36C08K3/346C08K3/22C08L33/00C08K3/34
Inventor 崔大祥王绍华林琳
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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