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High-temperature-resistant anticorrosive coating capable of being solidified at room temperature

An anti-corrosion coating, room temperature curing technology, used in anti-corrosion coatings, fire-retardant coatings, coatings and other directions, can solve problems such as unseen and inapplicable, and achieve three-proof performance, salt spray resistance, excellent media resistance, and good process performance. Effect

Inactive Publication Date: 2019-03-15
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is not suitable for use under high temperature conditions, and there are no reports of related applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 30 parts of polysilazane resin, 4.6 parts of silicon dioxide, 6.8 parts of glass powder, 3.1 parts of aluminum tripolyphosphate, 11.4 parts of titanium dioxide, 5.5 parts of cobalt blue, 0.6 parts of thickener, 38 parts of xylene and add ingredients In the bucket, use a high-speed mixer to disperse at a speed of 1500r / min for 30 minutes, put the uniformly stirred slurry into a high-energy nano-impact mill and grind for 50 minutes to obtain a high-temperature-resistant anti-corrosion coating that can be cured at room temperature. The prepared coating was dip-coated on the surface of the titanium alloy substrate and cured at 80°C for 3h. After testing, the adhesion of the coating is grade 1, the paint film is intact after 500 ° C for 4 hours, the resistance to salt spray and damp heat reaches more than 1000 hours, the resistance to mold is 0 for 28 days, and there is no obvious change after soaking in jet fuel RP-3 at room temperature for 168 hours.

Embodiment 2

[0031] Weigh 30 parts of composite resin of polysilazane and epoxy-modified polysiloxane, 5.3 parts of boron nitride, 8.0 parts of mullite, 2.8 parts of silicon carbide, 10.3 parts of iron oxide red, 4.9 parts of zinc chrome yellow, Add 0.7 parts of thickener and 38 parts of xylene into the batching barrel, use a high-speed mixer to disperse for 40 minutes at a speed of 1500 r / min, put the uniformly stirred slurry into a high-energy nano-impact mill and grind for 40 minutes to obtain room temperature curable High temperature resistant anti-corrosion coating. The prepared coating was sprayed on the surface of the steel substrate and cured at room temperature for 7 days. After testing, the adhesion of the coating is grade 1, the paint film is intact after 5 hours of heat preservation at 450°C, the resistance to salt spray and damp heat reaches more than 1200 hours, the resistance to mold is 0 for 28 days, and there is no foaming after soaking in jet fuel RP-3 at room temperature...

Embodiment 3

[0033] Weigh 35 parts of composite resin of polysilazane and acrylic modified polysiloxane, 4.6 parts of silicon carbide, 6.8 parts of zinc phosphate, 2.8 parts of aluminum oxide, 10.3 parts of chromium oxide green, 4.9 parts of inorganic brown, 0.6 parts of thickener 35 parts of xylene and 35 parts of xylene were added to the batching tank, dispersed for 30 minutes at a speed of 1500 r / min using a high-speed mixer, and the uniformly stirred slurry was put into a high-energy nano-impact mill and ground for 50 minutes to obtain a room-temperature-curable high-temperature-resistant anti-corrosion coating . The prepared paint was brush-coated on the surface of the superalloy substrate and cured at 80°C for 3h. After testing, the adhesion of the coating is 0 grade, the paint film is intact after 500 ℃ heat preservation for 4 hours, the resistance to salt spray and damp heat reaches more than 1200 hours, the mold resistance is 0 grade after 28 days, and there is no foaming after so...

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PUM

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Abstract

The invention belongs to the technical field of coatings, and relates to a high-temperature-resistant anticorrosive coating capable of being solidified at a room temperature. The high-temperature-resistant anticorrosive coating capable of being solidified at the room temperature is characterized by comprising the following components in parts by weight: 20-60 parts of organic silicon resin, 0-30 parts of temperature-resistant powder, 5-40 parts of inorganic coloring pigment, 5-35 parts of temperature-resistant anticorrosive filler, 0.2-10 parts of a promoter and 20-50 parts of a solvent. The high-temperature-resistant anticorrosive coating capable of being solidified at the room temperature has the beneficial effects that (1) the coating both has temperature resistance and corrosion resistance, the tolerable temperature of the coating can reach 500 DEG C, and three-proofing performance (salt mist resistance, damp and heat resistance and mycete resistance) is excellent; (2) the coatingcan be solidified at the normal temperature, the problem that a common organic silicon resin coating needs to be heated for solidification is solved, and the processing property is good; and (3) medium resistance is excellent, and the coating material can resist petroleum products such as jet fuel RP-3.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a room-temperature-curable high-temperature-resistant anti-corrosion coating. Background technique [0002] Polysilazane is a kind of polymer whose main chain has Si-N bond as the repeating unit, and its application in the field of coatings is more and more extensive, such as packaging coatings for electronic devices (Chinese patent "A kind of coating for LED packaging Sulfuration-resistant and UV-resistant coating and its preparation method", patent number: CN201610815577.7), antifouling coating (Chinese patent "An antifouling and anti-graffiti organic polysilazane coating and its preparation method and application", patent number : CN201510919524.5) and so on. The polysilazane resin selected by the present invention has the following characteristics: (1) has excellent heat resistance and weather resistance of general organosilicon polymers; (2) good compactness after curing can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/16C09D183/04C09D5/08C09D5/18
CPCC08K2003/2227C08K2003/327C08K2003/328C08K2003/385C09D5/08C09D5/18C09D183/04C09D183/16C08K13/02C08K3/36C08K3/32C08K3/34C08L83/04C08K3/38C08L83/16C08K3/22
Inventor 王林豪万耀明熊瑜张玉忠
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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