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Bending-resistant powder coating

A powder coating and folding-resistant technology, used in polyester coatings, epoxy resin coatings, coatings, etc., can solve problems such as cracking of powder coatings, achieve good bending resistance, simple components, and improve electrostatic spraying performance. Effect

Inactive Publication Date: 2016-03-16
滁州市友邦涂装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In use, the existing powder coatings have the problem that when the box and workpiece made of metal sheets are stamped at 90-180 degrees after spraying, the powder coating film will crack when the thickness of the workpiece reaches 60um. Inadequacies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A bending-resistant powder coating made of the following components in mass percentage:

[0015]

[0016]

[0017] Proportion raw materials according to the powder coating formula → fully premix in the mixing tank → co-extrude through the extruder → tablet → crush → grind → sieve → package the finished product.

Embodiment 2

[0019] A bending-resistant powder coating made of the following components in mass percentage:

[0020]

[0021] Proportion raw materials according to the powder coating formula → fully premix in the mixing tank → co-extrude through the extruder → tablet → crush → grind → sieve → package the finished product.

[0022] The graphene microsheets are grown in a three-dimensional honeycomb manner, and the four valence electrons of each carbon atom form covalent bonds and are bound, and cannot form a directional mobile electron flow, so they cannot conduct electricity. Graphene crystals are ground in a single direction using wet nano-grinding methods to produce graphene microflakes with nanometer thickness and micron area.

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PUM

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Abstract

A bending-resistant powder coating comprises the following components by weight: 34.29% of polyester resin, 3.02% of epoxy resin, 2.01% of dicyandiamide, 1.71% of a pigment, 29.35% of titanium dioxide, 24.52% of ultrafine barium, 1.20% of a leveling agent, 0.80% of modified starch, 0.10% of graphene, 1.2% of titanium dioxide, 0.8% of zeolite powder, 0.5% of wax and 0.5% of glass powder. The coating has simple ingredients and reasonable ratio; and the added graphene microchip enhances the electrostatic spraying performance. Compared with the conventional powder coating, the coating has the outstanding advantages of good resistance to bending. If a conventional powder coating is sprayed on a metal sheet workpiece and then stamped at 90-180 DEG C, the powder coating film cracks at the thickness of 60 mum on the workpiece; however, if the bending-resistant powder coating disclosed by the invention is sprayed on the sheet metal workpiece and stamped at 90-180 DEG C, the powder coating does not crack on the work piece when the film thickness reaches 80 mum.

Description

technical field [0001] The invention relates to the technical field of coating technology, in particular to a bending-resistant powder coating. Background technique [0002] Electrostatic spraying uses the principle of high-voltage electrostatic corona electric field. The metal diversion cup on the spray gun head is connected to a high-voltage negative charge, and the workpiece to be coated is grounded to form a positive electrode. A strong electrostatic field is formed between the spray gun and the workpiece. When the carrier gas (compressed air) sends the powder coating from the powder supply barrel to the diversion cup of the spray gun through the powder delivery pipe, dense charges are generated around it, and the powder is negatively charged. Under the action of electrostatic force and compressed air, The powder is evenly adsorbed on the workpiece, and after heating, the powder is melted and solidified (or plasticized) to form a uniform, continuous, flat and smooth co...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D163/00C09D7/12C09D5/46
CPCC09D167/00C08K2201/014C08L2205/035C09D5/033C08L63/00C08L3/04C08L91/06C08K13/02C08K3/04C08K2003/2241C08K3/34C08K3/40
Inventor 陈亚明付后如刘守杰万守元祝传强
Owner 滁州市友邦涂装有限公司
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