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Fluorocarbon powder coating for automobile chassis and preparation method thereof

A technology for automobile chassis and powder coatings, applied in powder coatings, anti-corrosion coatings, polyester coatings, etc., can solve the problems of poor fluidity, pinholes, orange peel, ripples, and high cost of fluorocarbon powder coatings, and improve the appearance effect. , broad application prospects, the effect of reducing surface tension

Inactive Publication Date: 2018-08-10
中山市凯德美氟碳新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coatings commonly used in the automotive industry include epoxy, polyester, acrylic, etc., but these resin coatings still have disadvantages such as poor chemical corrosion resistance and short service life, which limit their application in the automotive industry. Fluorocarbon powder The finished coating is a low-carbon, energy-saving, new green and environmentally friendly coating with no VOC emissions. The coating effect is also relatively good, and the weather resistance is better.
[0003] At present, ordinary fluorocarbon powder coatings on the market have poor performance and high cost
When ordinary fluorocarbon powder coatings are sprayed on the car chassis, due to the poor fluidity of ordinary fluorocarbon powder coatings during the curing process, surface defects such as pinholes, orange peel, and ripples appear, and the surface decoration and smoothness Compared with traditional ordinary epoxy, polyester and acrylic paints, there is a big gap

Method used

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  • Fluorocarbon powder coating for automobile chassis and preparation method thereof
  • Fluorocarbon powder coating for automobile chassis and preparation method thereof
  • Fluorocarbon powder coating for automobile chassis and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1: After crushing each raw material separately, weigh the raw materials according to the following mass percentages: 25% ECTFE fluorocarbon resin, 42% weather-resistant polyester resin, 17% nano-titanium dioxide, 4% crosslinking agent, 0.5% leveling agent, and Agent 0.7%, barium sulfate 5%, pigment 0.2%, nano silicon dioxide micropowder 5%, wax powder 0.3%, benzoin 0.3%. Add the above raw materials into the high mixer for pre-mixing for 5 minutes.

[0031] Step 2: Use a twin-screw extruder to melt and knead the pre-mixed raw materials, disperse them evenly, and carry out melt extrusion; set the temperature of the extruder I zone to 105°C, and the temperature of the extrusion zone II to 95°C ℃.

[0032] Step 3: pressing the extruded material into tablets, cooling, and crushing, and finely pulverizing the crushed material using an ACM mill; the particle size of the crushed material is controlled within the range of 15-65 μm.

[0033] Step 4: Standard sieve the powd...

Embodiment 2

[0035] Step 1: After crushing each raw material separately, weigh the raw materials according to the following mass percentages: 20% ECTFE fluorocarbon resin, 45.4% weather-resistant polyester resin, 15% nano-titanium dioxide, 4% crosslinking agent, 0.5% leveling agent, and 1% agent, 3% barium sulfate, 0.3% pigment, 10% nano-silica powder, 0.5% wax powder, and 0.3% benzoin. Add the above raw materials into the high mixer and pre-mix for 4 minutes.

[0036] Step 2: Use a twin-screw extruder to melt and knead the pre-mixed raw materials, disperse them evenly, and carry out melt extrusion; set the temperature of the extruder I zone to 110°C, and the temperature of the extrusion zone II to 98 ℃.

[0037] Step 3: pressing the extruded material into tablets, cooling, and crushing, and finely pulverizing the crushed material using an ACM mill; the particle size of the crushed material is controlled within the range of 15-65 μm.

[0038] Step 4: Standard sieve the powder obtained af...

Embodiment 3

[0040] Step 1: After crushing each raw material separately, weigh the raw materials according to the following mass percentages, 18% ECTFE fluorocarbon resin, 42% weather-resistant polyester resin, 17% nano-titanium dioxide, 4% crosslinking agent, 0.5% leveling agent, and 0.5% agent, 5% barium sulfate, 0.2% pigment, 12% nano-silica powder, 0.5% wax powder, 0.3% benzoin. Add the above raw materials into the high mixer for pre-mixing for 5 minutes.

[0041] Step 2: Use a twin-screw extruder to melt and knead the pre-mixed raw materials, disperse them evenly, and carry out melt extrusion; set the temperature of the extruder I zone to 108°C, and the temperature of the extrusion zone II to 100°C ℃.

[0042] Step 3: pressing the extruded material into tablets, cooling, and crushing, and finely pulverizing the crushed material using an ACM mill; the particle size of the crushed material is controlled within the range of 15-65 μm.

[0043] Step 4: Standard sieve the powder obtained ...

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Abstract

The invention relates to a fluorocarbon powder coating for automobile chassis. The fluorocarbon powder coating comprises the following components in percentage by mass: 15-25% of ECTFE fluorocarbon resin, 30-50% of weather resistant polyester resin, 15-25% of nanometer titanium dioxide, 3-5% of cross-linking agent, 0.5-1% of leveling agent, 0.5-1% of light enhancing agent, 3-10% of barium sulfate,0.2-0.8% of pigment, 5-15% of nanometer silica micro powder, 0.3-0.5% of wax powder, and 0.1-0.3% of benzoin. The invention also provides a preparation method of the fluorocarbon powder coating for automobile chassis. The fluorocarbon powder coating for automobile chassis can effectively improve a painting appearance effect, and has higher chemical corrosion resistance and long service life, andthe preparation method of the powder coating is simple and easy to operate, therefore, the fluorocarbon powder coating is suitable for wide application and promotion.

Description

technical field [0001] The invention relates to the field of automobile industry coatings, in particular to a fluorocarbon powder coating for automobile chassis and a preparation method thereof. Background technique [0002] The 21st century is called an environment-oriented new century. Environmental protection has attracted worldwide attention and has become one of the most urgent research topics for human beings. In the rapidly developing automotive industry, the environmental pollution caused by automotive coating materials is becoming increasingly serious. The development of environmentally friendly automotive coatings with low VOC (volatile organic compounds) content is the most active research field in the automotive industry today. Automotive coatings are heading towards Develop in the direction of water-based, high-solid differentiation, and powderization. Coatings commonly used in the automotive industry include epoxy, polyester, acrylic, etc., but these resin coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D123/08C09D5/03C09D5/08C09D5/25C09D7/61C09D7/65
Inventor 马利强陈向阳
Owner 中山市凯德美氟碳新材料有限公司
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