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A kind of fluorocarbon powder coating and preparation method thereof

A powder coating and fluorocarbon technology, applied in powder coatings, polyester coatings, coatings, etc., can solve the problems of poor wettability of fillers, high material costs, difficulty in powder coatings of pure fluorocarbon systems, etc., to improve anti-aging Ability and impact resistance, performance improvement, cost reduction effect

Active Publication Date: 2021-02-05
遵义春华新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fluorocarbon powder coatings are recognized as super weather-resistant coatings at home and abroad, and their outdoor performance has been widely verified. However, pure fluorocarbon powder coatings have inherent deficiencies in terms of adhesion and filler wettability. , coupled with the high cost of materials, it is difficult to vigorously develop powder coatings of pure fluorocarbon systems, so those skilled in the art have conducted research on powder coatings of non-pure fluorocarbon systems, such as fluorocarbon-polyester with patent number 201510756267.8 Composite super-weather-resistant matte powder coating is prepared by dry-mixing and pulverizing components A and B containing fluorocarbon resin and polyester resin dual-curing system, which makes it have the advantages of super weather resistance, acid and alkali resistance, etc., and improves the attachment Disadvantages of poor force and poor wettability of fillers

Method used

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  • A kind of fluorocarbon powder coating and preparation method thereof

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preparation example Construction

[0021] In some embodiments, the preparation method of fluorocarbon powder coating comprises the following steps:

[0022] (1) Pre-mix the raw material components according to their corresponding mass ratios, preheat them to 40-50°C, and treat them at a constant temperature for 0.5-1h;

[0023] (2) Melt and extrude the pre-mixed raw materials, and evenly spray nano-materials on the melt-extruded material, press into tablets, after cooling, return to melt-extrude, press into tablets, cool, crush and then carry out fine pulverization ;

[0024] (3) Sieve the finely pulverized powder with a standard sieve to obtain the final product.

[0025] In some embodiments, the cooling chamber is cooled to normal temperature.

[0026] In some embodiments, the melt extrusion is to use a twin-screw extruder to melt, knead and uniformly disperse the pre-mixed raw materials, and control the temperature in zone I of the extruder to 105-125°C. The temperature in the exit II area is 95-115°C.

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Embodiment 1

[0033] Fluorocarbon powder coating, raw material components by mass are PVDF resin 10kg, FEVE resin 10kg, acrylic resin 5kg, carboxyl-terminated polyester resin 4kg, pigment 2kg, vinyltriamine 2.2kg, benzoin 0.3kg, polydimethylsiloxane 0.8 kg of oxane also includes 0.15 kg of nanomaterials, wherein the nanomaterials are a mixture of nano-zinc oxide and nano-silicon carbide at a mass ratio of 1:0.03.

Embodiment 2

[0035] Fluorocarbon powder coating, the raw material components are PVDF resin 15kg, FEVE resin 15kg, acrylic resin 6kg, carboxyl-terminated polyester resin 5kg, pigment 3kg, vinyltriamine 2.5kg, benzoin 0.4kg, polydimethylsiloxane 1.2 kg of oxane also includes 0.22 kg of nanomaterials, wherein the nanomaterials are a mixture of nano-zinc oxide and nano-silicon carbide at a mass ratio of 1:0.5.

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Abstract

The invention relates to the technical field of powder coatings, in particular to a fluorocarbon powder coating and a preparation method thereof. Through the control of the composition of nanomaterials and the amount of nanomaterials added, not only the cost is reduced, but also the performance of the powder coating can be improved. Improve, improve aging resistance and impact resistance.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to a fluorocarbon powder coating and a preparation method thereof. Background technique [0002] Powder coating is a new type of solvent-free solid powder coating, which has the characteristics of no solvent, no pollution, recyclable, environmental protection, energy saving and high mechanical strength of the coating film. Fluorocarbon powder coatings are recognized as super weather-resistant coatings at home and abroad, and their outdoor performance has been widely verified. However, pure fluorocarbon powder coatings have inherent deficiencies in terms of adhesion and filler wettability. , coupled with the high cost of materials, it is difficult to vigorously develop powder coatings of pure fluorocarbon systems, so those skilled in the art have conducted research on powder coatings of non-pure fluorocarbon systems, such as fluorocarbon-polyester with patent number 201510756...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/16C09D127/12C09D133/04C09D167/00C09D5/03C09D7/61
CPCC08K2003/2296C08K2201/011C08L2205/035C09D5/033C09D127/12C09D127/16C08L27/12C08L33/04C08L67/00C08K3/22C08K3/34C08L27/16
Inventor 周光勇许仁贵刘元长陈应先胡强
Owner 遵义春华新材料科技有限公司