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Zinc-based double antiseptic powder coating and preparing method thereof

A powder coating and heavy-duty anti-corrosion technology, which is applied in powder coatings, anti-corrosion coatings, polyester coatings, etc., can solve the problems that affect the application and promotion of zinc-rich heavy-duty anti-corrosion powder coatings, increase construction costs, and high processing costs, and achieve increased compactness and Physical and mechanical properties, construction cost reduction, and the effect of reducing dosage

Inactive Publication Date: 2007-09-12
XUZHOU ZENITH COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the high processing cost of flake zinc powder, the market price is more than four times that of spherical zinc powder, resulting in the market price of zinc-rich heavy-duty anti-corrosion powder coatings at 50-80 yuan / kg, much higher than ordinary powder coatings (15-25 Yuan / kg) and general anti-corrosion powder coatings (20-30 yuan / kg), and zinc-rich heavy-duty anti-corrosion powder coatings require extremely high cleanliness in substrate treatment, resulting in difficult processing, high requirements, and increased construction costs , affecting the further application and promotion of zinc-rich heavy-duty anti-corrosion powder coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Raw material dosage (wt%)

[0028] Epoxy Systems 56

[0029] Toughener PVB 1.3

[0030] Degasser 0.3

[0031] Flow enhancer 0.2

[0032] Flake Zinc Powder 20

[0033] Nano calcium carbonate 5

[0034] Zinc phosphate 15

[0035] Superfine barium sulfate balance

[0036] According to the above formula, it is prepared by melting extrusion mixing method, and zinc-based heavy-duty anti-corrosion powder coating can be obtained. Its coating has grade 0 adhesion, impact strength of 80cm, salt spray resistance time ≥ 3000h, natural exposure for 12 months without blistering, rusting, cracking or peeling.

Embodiment 2

[0038] Raw material dosage (wt%)

[0039] Epoxy / polyester resin systems 65

[0040] Degasser 0.3

[0041] Flow enhancer 0.1

[0042] red lead 10

[0043] Nano Titanium Oxide 2

[0044] Flake Zinc Powder 21

[0045] Superfine barium sulfate balance

[0046]According to the above formula, the zinc-based anti-corrosion powder coating can be obtained by the melt extrusion mixing method. Its coating has grade 0 adhesion, impact strength of 80cm, salt spray resistance time ≥ 2000h, and natural exposure for 12 months without blistering, rusting, cracking, or peeling.

example 3

[0048] Raw material dosage (wt%)

[0049] Polyester / TGIC and leveling system 70

[0050] A mixture of nano-titanium oxide and nano-silicon oxide, the mixing ratio is 90:10 1

[0051] Degasser 0.4

[0052] Flow enhancer 0.2

[0053] Booster 0.3

[0054] Flake Zinc Powder 10

[0055] red pill 8

[0056] Zinc phosphate 8

[0057] Superfine barium sulfate balance

[0058] Prepared according to the above formula by melting high-speed stirring and mixing method, epoxy zinc-rich heavy-duty anti-corrosion powder coating can be obtained. Its coating adhesion is grade 1, impact strength ≥ 50cm, salt spray resistance time ≥ 3000h, artificial accelerated aging time ≥ 500h, natural exposure for 12 months without blistering, rust, cracking, or peeling.

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Abstract

The invention discloses a kind of heavy-duty zinc-based powder coating and its preparation. The coating is prepared by the following share weight of raw materials through the melt extruderion-mixing or melt-mixing, and the raw materials are as follow: 50-75% of resin and its flow-curing system, 10-40% of zinc flake, 0.1-10% of nanomaterial, 0.1-20% of rust paint, 0-30% of filler, and 0.1-5% of other functional additives.

Description

technical field [0001] The invention relates to a zinc-based heavy-duty anti-corrosion powder coating and a preparation method thereof, belonging to the technical field of electrostatic coating powder coatings. Background technique [0002] Heavy anti-corrosion powder coatings are one of the development trends of powder coatings. In the beginning, heavy-duty anti-corrosion powder coatings mainly use base resin and anti-rust pigments and fillers to improve the anti-corrosion ability of powder coatings. For higher anti-corrosion requirements, thick coating and multi-coating are adopted. The construction method of multi-layer or composite coating to achieve the purpose of heavy-duty anti-corrosion coating. Later, paint technicians used the principle of anodic oxidation of metal zinc to protect steel substrates, and developed inorganic zinc-rich primers and organic zinc-rich primers, which were successfully applied to anti-corrosion construction of va...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D167/00C09D133/00C09D5/08C09D5/03
Inventor 陆东方晁兵鹿存才
Owner XUZHOU ZENITH COATING
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