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Coating capable of improving heat resistance and corrosion resistance of automobile exhaust pipes and application method of such coating

A technology for corrosion resistance and automobile exhaust, applied in anti-corrosion coatings, fire-resistant coatings, anti-fouling/underwater coatings, etc., can solve problems such as rust, affecting functions, and affecting car appearance, so as to improve durability and ensure long-lasting Durability and durability, anti-rust effect good effect

Inactive Publication Date: 2017-06-09
安徽雷萨重工机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As far as the role of the automobile exhaust pipe on the car body is concerned, it plays the role of shock absorption and noise reduction, and prolongs the life of the exhaust muffler system. The main material of the exhaust pipe is stainless steel. Under high temperature, the properties of iron materials are transformed, which leads to rust. In high temperature and highly corrosive environments, sandstone impacts and hard object impacts and scratches caused by high-speed driving will cause rust. In order to reduce costs, automobile manufacturers usually Partial anti-rust treatment for the exhaust pipe of the detachment. These measures cannot fundamentally play a role in anti-rust. After the exhaust pipe is rusted, it will not only affect the appearance of the car, but may also affect some functions

Method used

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  • Coating capable of improving heat resistance and corrosion resistance of automobile exhaust pipes and application method of such coating

Examples

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Effect test

Embodiment 1

[0012] A coating for improving the heat and corrosion resistance of automobile exhaust pipes, which is made of the following raw materials in parts by weight: 18 parts of bismaleimide resin, 8 parts of acetanilide, 2 parts of sodium metaaluminate, and hydroxycamptothecin 0.8 parts, 3 parts of thiourea, 7 parts of C60-thiophene pyrrolidine, 8 parts of ultra-fine copper powder, 2 parts of methylcyclohexane, 7 parts of diethylene glycol monoethyl ether acetate, 4 parts of benzyl dimethylamine, 22 parts of water;

[0013] The preparation method comprises the following steps: after mixing bismaleimide resin and acetanilide, the temperature is raised to 95-105° C., and after stirring for 1.5-2 hours, ultra-fine copper powder and sodium metaaluminate are added, and then heat-preserved and stirred for 5 After -10 minutes, cool down to 55-60°C, add the remaining raw materials, stir evenly, cool to room temperature naturally, and use after standing for 3.5-4 hours.

[0014] Wherein, th...

Embodiment 2

[0018] A coating for improving the heat and corrosion resistance of automobile exhaust pipes, which is made of the following raw materials in parts by weight: 24 parts of bismaleimide resin, 6 parts of acetanilide, 3 parts of sodium metaaluminate, and hydroxycamptothecin 0.6 parts, 4 parts of thiourea, 6 parts of C60-thiophene pyrrolidine, 9 parts of ultrafine copper powder, 2 parts of methylcyclohexane, 5 parts of diethylene glycol monoethyl ether acetate, 3 parts of benzyl dimethylamine, 24 parts of water;

[0019] The preparation method comprises the following steps: after mixing bismaleimide resin and acetanilide, the temperature is raised to 100° C., and after stirring for 2 hours, superfine copper powder and sodium metaaluminate are added, and then the temperature is lowered after stirring for 10 minutes. to 60°C, add the remaining raw materials, stir evenly, cool to room temperature naturally, and use after standing for 4 hours.

[0020] Its method of use is the same a...

Embodiment 3

[0022] A coating for improving the heat and corrosion resistance of automobile exhaust pipes, made of the following raw materials in parts by weight: 26 parts of bismaleimide resin, 4 parts of acetanilide, 2 parts of sodium metaaluminate, and hydroxycamptothecin 0.8 parts, 5 parts of thiourea, 4 parts of C60-thiophene pyrrolidine, 10 parts of ultra-fine copper powder, 2 parts of methylcyclohexane, 3 parts of diethylene glycol monoethyl ether acetate, 4 parts of benzyl dimethylamine, 26 parts of water;

[0023] The preparation method comprises the following steps: after mixing bismaleimide resin and acetanilide, the temperature is raised to 105° C., and after stirring for 2 hours, superfine copper powder and sodium metaaluminate are added, and then the temperature is lowered after stirring for 10 minutes. To 55-60 ℃, add the remaining raw materials, stir evenly, cool down to room temperature naturally, and use after standing for 3.5 hours.

[0024] Its method of use is the sam...

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Abstract

The invention belongs to the technical field of metal heat-resistant coatings and particularly relates to a coating capable of improving heat resistance and corrosion resistance of automobile exhaust pipes and an application method of such coating. The coating is prepared from bismaleimide resin, acetanilide, sodium metaaluminate, hydroxycamptothecine, thiourea, C60-thiophene pyrrolidine, ultrafine copper powder, methyl cyclohexane, diethylene glycol monoethyl ether acetate, benzyl dimethylamine and water. Compared with the prior art, the coating has the advantages that a compact thin film is formed on the surface of a matrix of the bismaleimide resin to make the matrix rustproof effectively, and adhesive force between a coating film and the matrix is improved through the methyl cyclohexane and the diethylene glycol monoethyl ether acetate, so that durability and resistance to water and high temperatures are enhanced; the automobile exhaust pipes coated with the coating are highly resistant to fouling and corrosion at high temperatures and highly resistant to rusting, and accordingly the coating guarantees appearance persistence and durability of the automobile exhaust pipes and is suitable for popularization and use.

Description

technical field [0001] The invention belongs to the technical field of metal heat-resistant coatings, and in particular relates to a coating for improving the heat-resistant and corrosion-resistant properties of automobile exhaust pipes and its application method. Background technique [0002] As far as the role of the automobile exhaust pipe on the car body is concerned, it plays the role of shock absorption and noise reduction, and prolongs the life of the exhaust muffler system. The main material of the exhaust pipe is stainless steel. Under high temperature, the properties of iron materials are transformed, which leads to rust. In high temperature and highly corrosive environments, sandstone impacts and hard object impacts and scratches caused by high-speed driving will cause rust. In order to reduce costs, automobile manufacturers usually The exhaust pipe of the detachment is treated with partial anti-rust treatment. These measures cannot fundamentally play a role in an...

Claims

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Application Information

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IPC IPC(8): C09D179/08C09D5/10C09D7/12C09D5/16
CPCC09D179/085C08K3/08C08K3/24C08K5/01C08K5/103C08K5/3437C08K5/45C08K13/02C08K2003/085C08K2201/014C09D5/10C09D5/1662C09D5/1687C09D5/18
Inventor 陶小飞
Owner 安徽雷萨重工机械有限公司
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