Nano-composite PU (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 human health and environmental hazards, harmful, toxic and other problems, and achieve high antifouling and high UV resistance , High surface self-cleaning effect

Active Publication Date: 2014-10-15
山东中科纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a nanocomposite polyurethane aviation coating with high corrosion resistance, high durability, high antifouling property, high surface self-cleaning property, high anti-ultraviolet property and long service life and its preparation method, to solve the problem of prior art Toxic and harmful substances are used in aviation coatings, which cause harm to human health and the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] 1. Preparation of nano-pulp

[0073] According to the weight ratio of nano-titanium dioxide, nano-silica, and water as 15:45:40, add nano-titanium dioxide and nano-silica to deionized water for ultrasonic dispersion (temperature T=40°C) for 20 minutes; The silane coupling agent of 3% of the total weight of the particles, the polyacrylamide dispersant accounting for 4% of the total weight of the above-mentioned nanoparticles, and the water-based polyurethane resin accounting for 6% of the total weight of the above-mentioned nanoparticles were dispersed by ultrasonic (T=55° C.) for 1 h; Finally in 2×10 4 Centrifuge 3 times at rpm for 1 hour each time to prepare nano-slurry.

[0074] 2. Preparation of polyaniline modified mica iron oxide

[0075] (a) Prepare a mixed aqueous solution of phosphoric acid and phytic acid: wherein the phosphoric acid is 1.5 mol / liter; the phytic acid is 0.5 mol / liter.

[0076] (b) Add aniline to the mixed aqueous solution of phosphoric acid ...

Embodiment 2

[0085] 1. Preparation of nano-pulp

[0086] According to the weight ratio of nano-titanium dioxide, nano-silica, and water as 10:50:40, add nano-titanium dioxide and nano-silica to deionized water for ultrasonic dispersion (temperature T=30°C) for 30 minutes; then add the above-mentioned nanometer The silane coupling agent of 2% of the total weight of the particles, the polyacrylamide dispersant accounting for 5% of the total weight of the above-mentioned nanoparticles, and the water-based polyurethane resin accounting for 8% of the total weight of the above-mentioned nanoparticles were dispersed by ultrasonic (T=50° C.) for 2 hours; Finally at 1×104 Centrifuge twice at rpm for 2 hours each time to prepare nano-slurry.

[0087] 2. Preparation of polyaniline modified mica iron oxide

[0088] (a) Prepare a mixed aqueous solution of phosphoric acid and phytic acid: wherein phosphoric acid is 0.5 mol / liter; phytic acid is 0.1 mol / liter.

[0089] (b) Add aniline to the mixed aque...

Embodiment 3

[0098] 1. Preparation of nano-pulp

[0099] According to the weight ratio of nano-titanium dioxide, nano-silica, and water as 20:45:35, add nano-titanium dioxide and nano-silica to deionized water for ultrasonic dispersion (temperature T=35°C) for 25 minutes; then add the above-mentioned nanometer The silane coupling agent of 4% of the total weight of the particles, the polyacrylamide dispersant of 3% of the total weight of the above-mentioned nanoparticles and the water-based polyurethane resin of 5% of the total weight of the above-mentioned nanoparticles were dispersed by ultrasonic (T=60°C) for 1.5h ;finally at 3×10 4 Centrifuge 3 times at rpm for 0.5 h each time to prepare nanoslurry.

[0100] 2. Preparation of polyaniline modified glass flakes

[0101] (a) Prepare a mixed aqueous solution of phosphoric acid and phytic acid: wherein the phosphoric acid is 1.2 mol / liter; the phytic acid is 0.6 mol / liter.

[0102] (b) Add aniline to the mixed aqueous solution of phosphor...

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Abstract

The invention relates to a nanotechnology and a corrosion prevention technology, particularly to a nano-composite PU (polyurethane) aircraft coating with high corrosion resistance and a preparation method thereof. In parts by weight, a first component comprises 60-80 parts of waterborne hydroxyl acrylic resin, 5-10 parts of nano slurry, 1-3 parts of a coloring pigment, 8-10 parts of an organic corrosion inhibitor, 10-15 parts of an anti-rust pigment and the like; a second component comprises 70-80 parts of a waterborne isocyanate curing agent and 20-30 parts of deionized water. Raw materials, such as the waterborne hydroxyl acrylic resin, the deionized water, the nano slurry, the additives and the like, are dispersed at the high speed, then ground and filtered to prepare the first component, the curing agent and the deionized water are dispersed and mixed to prepare the second component, and the two components are evenly mixed in proportion to obtain the coating. The novel composite nano slurry, the anti-rust pigment, the composite organic corrosion inhibitor, the water and the like are used for preparing the nano-composite PU aircraft coating, so that the nano-powder material is stably dispersed in the coating, and the corrosion resistance of the coating is improved.

Description

technical field [0001] The invention relates to nanotechnology and corrosion protection technology, in particular to a nanocomposite polyurethane coating with high corrosion resistance and a preparation method thereof. Background technique [0002] Aviation coatings are used for the coating and protection of aircraft skins. They are not only the appearance decoration materials of aircraft, but also important materials for aircraft structures that prolong the service life of aircraft and ensure safe flight. China's civil aviation department has predicted that in 2011, the domestic large aircraft C919 will usher in new orders, there are already 100 orders, and the total sales will reach 2,000 in the next 20 years; by 2012, China will need more than 1 of various general and military aviation aircraft. 10,000 aircraft, the various aviation coatings required for new manufacturing and maintenance will reach 5,000 tons, and there is a great demand for high-performance aviation coat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12C09D5/08C08G73/02C09C1/00C09C1/24C09C1/36C09C3/08C09C3/10C09C3/12
Inventor 刘福春邱再明于清章郝庆辉韩行勇
Owner 山东中科纳米科技有限公司
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