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Filiform corrosion resistant coating for aluminum alloy materials used for aviation

A filiform corrosion, aluminum alloy technology, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems that cannot meet the requirements of aviation aluminum alloy materials for filiform corrosion resistance, and achieve excellent comprehensive performance Effect

Inactive Publication Date: 2017-11-10
MARINE CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN101792285A discloses a chromium-free environmental protection epoxy anticorrosion primer, which has excellent acid and alkali resistance, and the salt spray test can reach 1000h; CN102220071A discloses a kind of high solid content aviation aircraft skin coating, which is a two-component For ester polyurethane coatings, the salt spray resistance test is 3000h; however, the above-mentioned coatings for aluminum alloys do not involve research on the resistance to filiform corrosion
[0005] Therefore, the prior art has not been able to meet the demand for filiform corrosion resistance of aluminum alloy materials for aviation

Method used

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  • Filiform corrosion resistant coating for aluminum alloy materials used for aviation
  • Filiform corrosion resistant coating for aluminum alloy materials used for aviation
  • Filiform corrosion resistant coating for aluminum alloy materials used for aviation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The bisphenol A type epoxy resin is selected from 618 resin and 6101 resin, and the bisphenol F type epoxy resin is selected from CYDF-170 resin; the active diluent is benzyl glycidyl ether; the antirust pigment is calcium phosphate and aluminum tripolyphosphate. The anti-settling hydrotalcite is vanadate modified hydrotalcite, the anti-settling agent is Degussa A200, the defoamer is AFCONA-2040; the wetting and dispersing agent is TEGO-671; the leveling agent is EFKA3239; the silane coupling agent is KH570; The polyamide curing agent is SF-115 produced by Changzhou Shanfeng and SF-125 produced by Changzhou Shanfeng.

[0058] A component formula is as follows according to weight part:

[0059]

[0060]

[0061] B component formula is as follows according to weight part:

[0062]

[0063] The preparation method is as follows:

[0064] 1) The preparation method of component A is: put resin, reactive diluent, wetting and dispersing agent, defoamer, leveling agen...

Embodiment 2

[0086] In embodiment 2, bisphenol A type epoxy resin is 618 resin and 6101 resin, and bisphenol F type epoxy resin is NPEF resin; Reactive diluent is benzyl glycidyl ether; Antirust pigment is zinc phosphate and tripolymer Aluminum phosphate, modified hydrotalcite is molybdate modified hydrotalcite, anti-settling agent is Degussa A200, defoamer is AFCONA-2040; wetting and dispersing agent is TEGO-671; leveling agent is EFKA3239; silane coupling The curing agent is Deqian 1121; the polyamide curing agent is SF-115 produced by Changzhou Shanfeng and HK-125 produced by Jining Huakai.

[0087] A component formula is as follows according to weight part:

[0088]

[0089] B component formula is as follows according to weight part:

[0090]

[0091] Preparation method is the same as embodiment 1

[0092] The two components A and B are mixed evenly at a weight ratio of 5:1, and are applied by air spraying or high-pressure airless spraying.

[0093] Example 2 is prepared by co...

Embodiment 3

[0112] In embodiment 3, bisphenol A type epoxy resin is 618 resin and 6101 resin, and bisphenol F type epoxy resin is Epikote862 resin; Reactive diluent is benzyl glycidyl ether; Antirust pigment is barium borate and trimer Aluminum phosphate, modified hydrotalcite is molybdate modified hydrotalcite, anti-settling agent is Degussa A200, defoamer is AFCONA-2040; wetting and dispersing agent is TEGO-671; leveling agent is EFKA3239; silane coupling The curing agent is Deqian 1121; the polyamide curing agent is SF-115 produced by Changzhou Shanfeng and HK-125 produced by Jining Huakai.

[0113] A component formula is as follows according to weight part:

[0114]

[0115] B component formula is as follows according to weight part:

[0116]

[0117]

[0118] The preparation method is the same as in Example 1.

[0119] The two components A and B are mixed evenly at a weight ratio of 5:1, and are applied by air spraying or high-pressure airless spraying.

[0120] Example 3...

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Abstract

The invention relates to the field of coatings, and concretely relates to a filiform corrosion resistant coating for aircraft skin aluminum alloy. The coating is prepared from a component A and a component B according to a weight ratio of 5:1, wherein the component A comprises bisphenol A type epoxy resin, bisphenol F type epoxy resin, an active diluent, an antirust pigment, modified hydrotalcite, a filler and an assistant, and the component B comprises a polyamide curing agent and a solvent. The coating can well solve the filiform corrosion threat of aircrafts, and greatly improves the flight safety.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a preparation method of a filiform corrosion-resistant and anti-corrosion epoxy primer for aircraft skin aluminum alloys. Background technique [0002] Aluminum alloys have been widely used in transportation, energy, food, electronics and other fields due to their excellent properties such as high strength / weight ratio and low processing cost. Especially in the aviation industry, the application of aluminum alloy is more extensive, giving full play to its characteristics of high strength and low density. As far as the current situation is concerned, there is no aviation raw material that can completely replace aluminum alloy. . However, the biggest disadvantage of aluminum alloy is that it is not resistant to the corrosion of Cl ions, and has a strong tendency of localized corrosion in neutral media containing Cl ions. Especially in the marine environment, d...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/12
CPCC09D163/00C08K2003/325C08K2003/327C08L2205/025C08L2205/03C09D5/08C08L63/00C08K13/06C08K9/02C08K3/32C08K3/34C08K5/1515
Inventor 张世珍杨旭卢伟许广兴张建英董春蕾邱家浩李海燕刘松良
Owner MARINE CHEM RES INST
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