Anticorrosive powder coating

A technology for powder coatings and raw materials, applied in powder coatings, anti-corrosion coatings, fire-retardant coatings, etc., can solve problems such as poor adhesion, atmospheric and ecological environment pollution, and unenvironmental protection, and achieve strong adhesion, good compactness, and mechanical properties. and the effect of improving corrosion resistance

Inactive Publication Date: 2017-02-01
李福厚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-corrosion powder coating, which can solve the problems that the existing solvent-based and water-based coatings for surface treatment of auto parts will pollute the atmosphere and ecological environment, have poor adhesion and are not environmentally friendly.

Method used

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  • Anticorrosive powder coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An anti-corrosion powder coating, comprising the following quality raw materials: 6kg of unsaturated carboxyl-terminated polyester resin, 20kg of novolac epoxy resin, 12kg of zinc propionate resin, 8kg of chrome yellow, 8kg of organic silicon, 8kg of phenalkamine, triisocyanurate Glycidyl ester 5kg, aluminum tripolyphosphate 8kg, mica powder 14kg, coloring pigment 2.2kg, leveling agent 1kg, degassing agent 0.3kg, dispersant 1kg, polyethylene 1kg, polyvinyl butyral 1.3kg and polyamide 1.2kg, put the above raw materials into a high-speed mixer for pre-mixing, melt extrusion and mixing with an extruder, then cool and break into paint flakes, then finely pulverize with an air classifying mill, and separate with a sieve until the average particle size is The powder of 35 microns promptly obtains the present invention;

[0014] The above-mentioned epoxy resin is a phenolic modified epoxy resin or a novolac epoxy resin, and the adhesion of the obtained pure epoxy powder is enh...

Embodiment 2

[0016] Compared with Example 1, the present embodiment is different in that: 35kg of unsaturated carboxyl-terminated polyester resin, 15kg of phenolic modified epoxy resin, 8kg of zinc propionate resin, 2kg of chrome yellow, 5kg of organic silicon, 5kg of phenalkamine, Hydroxyalkylamide 4kg, aluminum tripolyphosphate 5kg, mica powder 10kg, coloring pigment 1.5kg, leveling agent 1kg, degassing agent 0.3kg, dispersant 1kg, polyethylene 1 kg, polyvinyl butyral 1kg and poly Amide 1.2kg, pre-mix the above raw materials in a high-speed mixer, melt extrude and mix with an extruder, then cool and break into paint flakes, then finely pulverize with an air classifying mill, and separate to an average particle size with a sieve It is 40 microns, namely obtains the powder coating.

Embodiment 3

[0018] Compared with Embodiment 1 and Embodiment 2, this embodiment is different in that: the epoxy resin selected is a phenolic modified epoxy resin; the present invention is tested under the baking and curing condition: 180°C / 15min, and its The performance of the coating film reaches an impact strength of 50Kg·cm, a flexibility of 1mm, a salt spray resistance of 1200h, and an artificial weathering resistance of 1200h.

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Abstract

The invention discloses an anticorrosive powder coating and relates to the technical field of chemical coatings. The anticorrosive powder coating is prepared from, by mass, unsaturated terminal carboxyl polyester resin 6-35%, epoxy resin 15-20%, zinc propionate resin 8-12%, chrome yellow 2-5%, organic silicon 5-8%, phenolic aldehyde amine 5-8%, triglycidyl isocyanurate or hydroxyalkyl amide 4-5%, a pigment and a filler 22-30% and an additive 3-5%, the raw materials are put in a high-speed mixer for pre-mixing, melting extrusion and mixing are performed by using an extrusion machine, the mixture is cooled and breaks into paint pieces, then fine smashing is performed by using an air classification mill, and screening and separation are performed to obtain the powder coating. Compared with the prior art, the anticorrosive powder coating is applied to surface treatment of automobile spare parts, has excellent coating compactness, mechanical and corrosion resistance performance and strong adhesion, is environmentally friendly and does not cause environmental pollution and the harm to human health, and the escaped coating during spray can be also recycled.

Description

technical field [0001] The invention relates to the technical field of chemical coatings, in particular to an anti-corrosion and environment-friendly powder coating for auto parts. Background technique [0002] At present, domestic automobile chassis, brackets, tires, springs and other spare parts have different special requirements for steel materials. In order to ensure their mechanical properties, some spare parts must be coated with paint for surface corrosion protection and decorative protection. Most of the existing auto parts are mainly painted and protected with solvent-based paints, and a small amount of water-based and powder-coated paints are used. Since solvent-based coatings contain toxic organic solvents, all of these toxic organic solvents will be discharged into the air during the coating process, which will not only pollute the atmosphere and the ecological environment, but also cause waste of resources and damage the body of the coating workers. Health wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/04C09D167/06C09D133/02C09D5/03C09D5/08C09D7/12
CPCC09D163/04C08L2201/08C08L2205/035C09D5/033C09D5/08C09D5/18C09D167/06C08L67/06C08L33/02C08K13/02C08K5/54C08K2003/327C08L63/04
Inventor 李福厚
Owner 李福厚
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