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Aniline trimer modified SiO2 hybrid coating, and preparation method and application thereof

A technology of aniline trimer and coating, which is applied in the direction of coating, anti-corrosion coating, etc., can solve the problem that oligomers are not easy to form a film, and achieve the effects of low cost, convenient operation, and reduced corrosion rate

Active Publication Date: 2018-03-30
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oligomers and small molecule oligomers such as aniline trimer have good solubility and reactivity while retaining the electrical activity of polyaniline, but oligomers and oligomers are not easy to form films

Method used

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  • Aniline trimer modified SiO2 hybrid coating, and preparation method and application thereof
  • Aniline trimer modified SiO2 hybrid coating, and preparation method and application thereof
  • Aniline trimer modified SiO2 hybrid coating, and preparation method and application thereof

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preparation example Construction

[0028] see figure 1 As shown, an aspect of the embodiments of the present invention provides an aniline trimer modified SiO 2 A method for preparing a hybrid coating, comprising:

[0029] Provides silanized aniline trimers;

[0030] Mix orthoethyl silicate (TEOS), silanized aniline trimer (TSUPQD), alcohol, water and acidic substances evenly, and form a sol system through hydrolysis and condensation reactions;

[0031] The sol system is applied on the substrate and then dried to obtain aniline trimer modified SiO 2 Hybrid coating.

[0032] As one of the preferred embodiments, the mass ratio of the silanized aniline trimer to tetraethylorthosilicate is 0.01˜0.1:1.

[0033] As one of the preferred embodiments, the molar ratio of tetraethyl orthosilicate, water and alcohol is 1:4:1-8.

[0034] As one of the preferred embodiments, the preparation method of the silanized aniline trimer comprises: uniformly mixing isocyanate propyltriethoxysilane (TESPIC) with a solvent to form...

Embodiment 1

[0076] Mix 10.4g tetraethyl silicate, 3.6g deionized water, 7.8g absolute ethanol, and 0.104g TSUPQD, adjust the pH to 5 with 0.1mol / L acetic acid, and use mechanical stirring for 12h to obtain a sol solution. Before soaking, the carbon steel substrate was polished and degreased first, and polished with 400#, 800#, and 1500# sandpaper for 10 minutes, followed by ultrasonic treatment in absolute ethanol for 20 minutes, and then in 0.1mol / L Soak in NaOH solution for 1 min, and finally rinse with deionized water. After the treatment, the carbon steel substrate was soaked in the sol for 5 minutes. After soaking, the sample was taken out at a pulling speed of 15cm / min. The sample was put into an oven for heating treatment for 3 hours at a temperature of 80°C. Finally, Aniline trimer modified SiO with 1 wt% aniline trimer content 2 Hybrid coating (hereinafter referred to as coating T1 for short), its surface morphology, roughness and contact angle can be found in Figure 2b , the ...

Embodiment 2

[0078] Mix 5.2 g tetraethyl silicate, 1.8 g deionized water, 3.9 g absolute ethanol, and 0.208 g TSUPQD, adjust the pH to 5 with 0.1 mol / L acetic acid, and use mechanical stirring for 12 hours to obtain a sol solution. Before soaking, the carbon steel substrate was polished and degreased first, and polished with 400#, 800#, and 1500# sandpaper for 10 minutes, followed by ultrasonic treatment in absolute ethanol for 20 minutes, and then in 0.1mol / L Soak in NaOH solution for 1 min, and finally rinse with deionized water. After the treatment, the carbon steel substrate was soaked in the sol for 5 minutes. After soaking, the sample was taken out at a pulling speed of 15cm / min. The sample was put into an oven for heating treatment for 3 hours at a temperature of 80°C. Finally, Aniline trimer modified SiO with 4 wt% aniline trimer content 2 Hybrid coating (hereinafter referred to as coating T4), its surface morphology, roughness and contact angle can be found in Figure 2c , the c...

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Abstract

The invention discloses an aniline trimer modified SiO2 hybrid coating, and a preparation method and application thereof. The preparation method comprises the following steps: providing the silanization aniline trimer; evenly mixing ethyl orthosilicate, the silanization aniline trimer, alcohol, water and acidic substances, forming a sol system through hydrolysis and condensation reaction, applyingthe sol system to a substrate, and then, drying to obtain the aniline trimer modified SiO2 hybrid coating. The preparation method disclosed by the invention has the advantages of convenience in operation, low cost and environment protection, the silanization aniline trimer and the SiO2 hybrid coating in the aniline trimer modified SiO2 hybrid coating have a synergistic effect, and the obtained coating has good shielding performance and excellent anticorrosion and wearproof performance and can be applied to industries including buildings, chemical engineering, petroleum, electric power, metallurgy, ships, light textile, storage, traffic, spaceflight and the like.

Description

technical field [0001] The invention relates to an aniline trimer modified SiO 2 Hybrid coating, specifically related to an aniline trimer modified SiO 2 Preparation of aniline trimer modified SiO by hybrid coating and sol-gel method 2 The hybrid coating method and its application belong to the technical field of coating preparation. Background technique [0002] When the metal is in contact with the surrounding medium, the damage caused by chemical and electrochemical actions is called metal corrosion. After the metal is corroded, it will change in appearance, color and mechanical properties, causing equipment damage, pipeline leakage, product pollution, causing vicious accidents such as combustion or explosion, and serious waste of resources and energy, which will cause huge damage to the national economy. loss. It is estimated that the annual economic loss caused by metal corrosion in developed countries in the world accounts for about 3.5% to 4.2% of their gross nati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/08
Inventor 赵海超叶育伟覃松绿李香玉刘桐王立平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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