Matt weather-resistant powder coating and preparation method thereof

A technology of powder coating and weather resistance, which is applied in the direction of powder coating, polyester coating, coating, etc., and can solve the problem of poor weather resistance of matte powder coating

Inactive Publication Date: 2019-05-10
TIANJIN SHENGDA POWDER COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Different companies and different products in this industry have different weather resistance, especially in the production of matt powder coatings. Because conventional matt powder coatings need to add matting agents to achieve matting effects, powder c

Method used

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  • Matt weather-resistant powder coating and preparation method thereof
  • Matt weather-resistant powder coating and preparation method thereof
  • Matt weather-resistant powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A method for making a matte weather-resistant powder coating in the above technical solution, comprising the following steps:

[0058] Step 1, preparing the first powder:

[0059] 1) Pre-mixing, FEVE (fluoroolefin- Vinyl ether copolymer) 8% thermosetting fluorine powder resin, 2% polyurethane powder coating curing agent or polyisocyanate adduct with Tg glass transition temperature 45-48, 4.6% triglycidyl isocyanurate, acrylate copolymer and Mixture of silicon dioxide 0.8%, copolymer of butyl acrylate and methyl methacrylate 0.5%, benzoin 0.4%, modified amide wax powder 0.5%, barium sulfate 39%, rutile titanium dioxide 1.2%, Mix carbon black, iron oxide red, iron oxide yellow 1.67% evenly;

[0060] 2) Extrusion. Extrude the mixture obtained in 1). The extrusion process uses a Shengshida 60 extruder. The temperature in zone 1 is 90°C±2, the temperature in zone 2 is 95°C±2, and the temperature in zone 3 is 105°C ±2, the temperature in Zone 4 is 100°C±2, the temperature ...

Embodiment 2

[0068] Step 1, preparing the first powder:

[0069] 1) Pre-mixing, 41.4% of the super weather-resistant polyester resin with an acid value of 55-65 mgKOH / g and a viscosity of 0.25-0.4 Pa.S, and FEVE (fluoroolefin-ethylene resin with a Tg glass transition temperature of 51-55) base ether copolymer) thermosetting fluorine powder resin 10%, polyurethane powder coating curing agent or polyisocyanate adduct with Tg glass transition temperature 45-48 2.5%, triglycidyl isocyanurate 4.6%, acrylate copolymer and di Silicon oxide mixture 0.8%, butyl acrylate and methyl methacrylate copolymer 0.5%, benzoin 0.4%, modified amide wax powder 0.5%, barium sulfate 36.5%, rutile titanium dioxide 1.2%, carbon Mix black, iron oxide red, and iron oxide yellow 1.67% evenly; (the name of the specific material will be added in)

[0070] 2) Extrusion. Extrude the mixture obtained in 1). The extrusion process uses a Shengshida 60 extruder. The temperature in zone 1 is 90°C±2, the temperature in zone 2...

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Abstract

The invention discloses a matt weather-resistant powder coating and a preparation method thereof. The matt weather-resistant powder coating comprises the following components in parts by weight: 49-49.9 parts of first power, 49-49.9 parts of second powder and 0.2-2 parts of aluminum oxide, and the mass ratio of the first powder to the second powder is 1: 1. The preparation method of the coating comprises the following steps: step 1, preparing the first powder; step 2, preparing the second powder; and step 3, mixing the first powder, the second powder and the aluminum oxide in a preset ratio toobtain the product. According to the matt high weather-resistant powder coating disclosed by the invention, the effects of matt, good curing performance and excellent weather resistance are achievedby mixing the first powder with the second powder in proportion.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a matte weather-resistant powder coating and a preparation method thereof. Background technique [0002] Powder coating is a new type of solvent-free, 100% solid powder coating, which is baked, melted, leveled and solidified to form a film during use. It has become a recognized 4E coating product that meets high production efficiency, excellent film performance, ecology and economy. Powder coating has the advantages of recyclability, environmental protection, no solvent pollution, and energy saving. It has gradually replaced paint in many fields, such as shipbuilding industry, pipeline industry, mechanical equipment and other fields. With the development of society, powder coatings are required to have higher stability, especially the weather resistance of powder coatings has attracted widespread attention. Weather resistance is the comprehensive damage caused by s...

Claims

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Application Information

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IPC IPC(8): C09D167/02C09D127/12C09D5/03C09D7/61C09D7/65C09D7/63C09D7/47
Inventor 李明盛
Owner TIANJIN SHENGDA POWDER COATING
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