Chromium-free nano composite polyurethane aircraft coating and preparation method thereof

A nano-composite, aerospace coating technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve the problems of anti-rust pigments such as toxicity, carcinogenicity, human health and environmental hazards, and achieve low sinking and corrosion resistance Improved performance and good storage stability

Active Publication Date: 2012-08-01
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a chromium-free nano-composite polyurethane aviation coating with good corrosion resistance and its preparation method, to solve the problem that the anti-rust pigments in the prior art use toxic and carcinogenic chromate, which is harmful to human health and the environment. causing hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The preparation method of component 1: add 40kg hydroxyl acrylic resin in dispersion cylinder A265 (solid content is 65wt%, the hydroxyl content of solid resin is 3.4wt%), add xylene 19kg, then add the above-mentioned Nanos1000 nano slurry 10kg, then add BYK-P104S wetting and dispersing agent 0.8kg, BYK-310 leveling agent 0.2kg, BENTONE 34 organic bentonite anti-sedimentation agent (RHEOX company of the United States) 0.5kg, utilize high-speed disperser to disperse at 400rpm for 10 minutes, then add titanium dioxide 6kg, rust-proof pigment containing strontium phosphate SRPP 8kg, p-nitrocinnamic acid Zinc 0.5kg, talcum powder 15kg, disperse 20 minutes with high-speed disperser 500rpm; Then grind 2 hours with horizontal sand mill, after being 25 microns to fineness, filter, pack, be prepared into the chrome-free nano-composite polyurethane aviation coating component one.

[0045] The preparation method of component two: take 80kg of curing agent N75 (solid content is 7...

Embodiment 2

[0048] The preparation method of component 1: add 40kg hydroxyl acrylic resin in dispersion cylinder A265 (solid content is 65wt%, the hydroxyl content of solid resin is 3.4wt%), add xylene 19kg, then add the above-mentioned Nanos1000 nano slurry 10kg, then add BYK-P104S wetting and dispersing agent 0.8kg, BYK-310 leveling agent 0.2kg, 0.5kg of BENTONE 34 organic bentonite anti-sedimentation agent (RHEOX company in the United States), disperse at 400rpm for 10 minutes with a high-speed disperser, then add 6kg of titanium dioxide, 20kg of anti-rust pigment phosphate SRPP containing strontium, p-nitrocinnamic acid Zinc 2kg, talcum powder 1.5kg, disperse 20 minutes with high-speed disperser 500rpm, then grind 2 hours with horizontal sand mill, after being 25 microns to fineness, filter, pack, be prepared into the chrome-free nano-composite polyurethane aviation coating component one.

[0049] The preparation method of component two: take 80kg of curing agent N75 (solid conten...

Embodiment 3

[0052] The preparation method of component 1: add 40kg hydroxyl acrylic resin in dispersion cylinder A265 (solid content is 65wt%, the hydroxyl content of solid resin is 3.4wt%), add xylene 19kg, then add the above-mentioned Nanos1000 nano slurry 5kg, then add BYK-P104S wetting and dispersing agent 0.8kg, BYK-310 leveling agent 0.2kg, 0.5kg of BENTONE 34 organic bentonite anti-sedimentation agent (RHEOX company in the United States), disperse at 400rpm for 10 minutes with a high-speed disperser, then add 1kg of titanium dioxide, 30kg of antirust pigment phosphate SRPP containing strontium, p-nitrocinnamic acid Zinc 3kg, talcum powder 0.5kg, disperse 20 minutes with high-speed disperser 500rpm, then grind 2 hours with horizontal sand mill, after being 25 microns to fineness, filter, pack, be prepared into the chrome-free nano-composite polyurethane aviation coating component one.

[0053] The preparation method of component two: take 80kg of curing agent N75 (solid content ...

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Abstract

The invention relates to the nanometer technology and corrosion resistance technology, in particular to a chromium-free nano composite polyurethane aircraft coating and a preparation method thereof. The chromium-free nano composite polyurethane aircraft coating consists of two components. By weight, the first component include 0.2-30 parts of nano pulp, 10-85 parts of synthetic resin, 0-40 parts of tinting pigment, 0.01-5 parts of organic corrosion inhibitor, 5-40 parts of rust-resistant pigment and the like, and is made by dispersing the synthetic resin, the solvent, the nano pulp, auxiliary and the like at high speed, grinding and filtering the same. The second component is formed by dispersing curing agent and the solvent. The two components are mixed uniformly to obtain the coating. By adding the rust-resistant pigment and the organic corrosion inhibitor to prepare the chromium-free nano composite polyurethane aircraft coating, nano powder can be dispersed in the coating stably, corrosion resistance of the coating is improved. Further, the prepared coating is beneficial to environment protection due to the chromium-free rust-resistant pigment.

Description

technical field [0001] The invention relates to nanotechnology and corrosion protection technology, in particular to a chromium-free nanometer composite polyurethane coating with high corrosion resistance and a preparation method thereof. Background technique [0002] Existing aircraft coatings are mainly composed of epoxy or polyurethane primers and polyurethane topcoats. Aerospace primers have many functions, the most important of which is to prevent substrate corrosion. Moisture, oxygen, salt mist, acid mist and machine liquid in the atmospheric environment are the main factors causing corrosion. Since common coatings have a certain permeability to corrosive media, topcoat protection alone is not enough. The role of the primer is to increase the density of the primer by filling the pigment on the basis of the primer resin to slow down the penetration of the corrosive medium, and rely on the physical and chemical effects of the anti-rust pigment to prevent the deteriorat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D175/06C09D7/12C09D5/08
Inventor 刘福春韩恩厚柯伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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