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Polyester transparent powder coating and preparation method thereof

A powder coating and transparent technology, applied in powder coatings, polyester coatings, coatings, etc., can solve the problems of low raw material cost and production cost, poor surface aesthetics and durability, unsatisfactory transparency and leveling performance, etc. Achieve high adhesion strength, excellent bending performance, and improve transparency and adhesion.

Active Publication Date: 2022-02-15
浙江凯蒂自动化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Compared with other types of powder coatings, polyester powder coatings have lower raw material costs and production costs. The overall film layer of the product is stable after spraying and has good prospects for use. However, due to the transparency and leveling of polyester transparent powder coatings The performance cannot reach the level of acrylic transparent powder coating, and the surface aesthetics and durability are poor

Method used

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  • Polyester transparent powder coating and preparation method thereof
  • Polyester transparent powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Polyester transparent powder coating, its raw materials include: polyester resin 40kg, diethanolamine 3kg, methyl acrylate 3kg, trimethylolpropane 5kg, catalyst 2kg, stearic acid 1kg, barium sulfate 5kg, calcium carbonate 5kg, silicon dioxide 5kg, graphene 3kg, curing agent 1kg, dispersant 2kg, leveling agent 1kg, light stabilizer 2kg, defoamer 1kg.

[0027] The preparation method of above-mentioned polyester transparent powder coating, comprises the steps:

[0028] S1. Mix barium sulfate, calcium carbonate, silicon dioxide, and graphene, and stir at 150°C for 5 minutes to obtain a premixed filler;

[0029] S2. Add polyester resin, premixed filler, curing agent, dispersant, leveling agent, light stabilizer, and defoamer into a high-speed mixer, and stir at 75°C for 1 hour to obtain premix a;

[0030] S3. Add diethanolamine to 40kg methanol and stir evenly, add methyl acrylate, stir at 40°C for 4h, filter under reduced pressure, add to trimethylolpropane, stir at 50°C f...

Embodiment 2

[0033] Polyester transparent powder coating, its raw materials include: polyester resin 100kg, diethanolamine 1kg, methyl acrylate 8kg, trimethylolpropane 1kg, catalyst 6kg, stearic acid 0.1kg, barium sulfate 10kg, calcium carbonate 1kg, dioxide Silicon 15kg, graphene 1kg, curing agent 5kg, dispersant 1kg, leveling agent 2kg, light stabilizer 1kg, defoamer 5kg.

[0034] The preparation method of above-mentioned polyester transparent powder coating, comprises the steps:

[0035] S1. Mix barium sulfate, calcium carbonate, silicon dioxide, and graphene, and stir at 100°C for 15 minutes to obtain a premixed filler;

[0036] S2. Add polyester resin, premixed filler, curing agent, dispersant, leveling agent, light stabilizer, and defoamer to a high-speed mixer, stir at 65°C for 2 hours, and obtain premix a;

[0037] S3. Add diethanolamine to 20kg methanol and stir evenly, add methyl acrylate, stir at 50°C for 2h, filter under reduced pressure, add to trimethylolpropane, stir at 60°...

Embodiment 3

[0040] Polyester transparent powder coating, its raw materials include: polyester resin 60kg, diethanolamine 2.5kg, methyl acrylate 4kg, trimethylolpropane 4kg, catalyst 3kg, stearic acid 0.7kg, barium sulfate 6kg, calcium carbonate 4kg, di Silicon oxide 8kg, graphene 2.5kg, curing agent 2kg, dispersant 1.7kg, leveling agent 1.2kg, light stabilizer 1.8kg, defoamer 2kg.

[0041] The preparation method of above-mentioned polyester transparent powder coating, comprises the steps:

[0042] S1. Mix barium sulfate, calcium carbonate, silicon dioxide, and graphene, and stir at 140°C for 8 minutes to obtain a premixed filler;

[0043] S2. Add polyester resin, premixed filler, curing agent, dispersant, leveling agent, light stabilizer, and defoamer to a high-speed mixer, and stir at 72°C for 1.3 hours to obtain premix a;

[0044] S3. Add diethanolamine to 35kg methanol and stir evenly, add methyl acrylate, stir at 42°C for 3.5h, filter under reduced pressure, add to trimethylolpropane...

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Abstract

The invention discloses a polyester transparent powder coating. The coating is prepared from the following raw materials: polyester resin, diethanol amine, methyl acrylate, trimethylolpropane, a catalyst, stearic acid, barium sulfate, calcium carbonate, silicon dioxide, graphene, a curing agent, a dispersing agent, a flatting agent, a light stabilizer and a defoaming agent. The mass ratio of the polyester resin, the diethanol amine, the methyl acrylate, the trimethylolpropane, the catalyst, the stearic acid, the barium sulfate, the calcium carbonate, the silicon dioxide, the graphene, the curing agent, the dispersing agent, the flatting agent, the light stabilizer to the defoaming agent is (40-100):(1-3):(3-8):(1-5):(2-6):(0.1-1):(5-10):(1-5):(5-15):(1-3):(1-5):(1-2):(1-2):(1-2):(1-5). The invention also discloses a preparation method of the polyester transparent powder coating. The polyester transparent powder coating has high transparency and excellent leveling property, and a coating layer is extremely high in adhesive strength, flat and smooth.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to polyester transparent powder coatings and a preparation method thereof. Background technique [0002] Powder coating has a completely different form from general coatings, and it exists in the state of fine powder. Powder coating is a new type of solvent-free, 100% solid powder coating, which has the characteristics of no solvent, no pollution, recyclable, environmental protection, energy and resource saving, labor intensity reduction and high mechanical strength of the coating film. [0003] Transparent powder coatings mainly include acrylic resin series and polyester resin series. The acrylic transparent powder coating has good coating transparency, high cross-linking density, excellent weather resistance, and good comprehensive performance of the coating. However, due to its high production and coating process requirements, high raw material costs and high manufactur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D5/03C09D7/65C09D7/61C08G65/34C08G65/48
CPCC09D167/00C09D5/033C08G65/34C08G65/48C08K2003/3045C08K2003/265C08L2201/10C08L71/08C08K3/30C08K3/26C08K3/36C08K3/042Y02P20/10
Inventor 阮惬冰黄心一李俊杰
Owner 浙江凯蒂自动化科技有限公司
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