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Thin-coating type high-corrosion-resistance impregnating coating as well as preparation method and application thereof

A dipping coating and corrosive technology, which is applied in the field of thin-coated high-corrosion-resistant dipping coatings and its preparation, can solve the problems of extended construction period, high construction cost, and low construction efficiency, and achieve extended construction time, low cost, and The effect of improving productivity

Active Publication Date: 2021-02-26
SHANGHAI HUAYI FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So many paints need to be replaced, such a large paint tank needs to be cleaned, and the workload is heavy. If the construction time limit is short, the frequency of paint replacement and paint tank cleaning will increase, and the construction period will be significantly prolonged due to paint replacement and paint tank cleaning. Low construction efficiency
However, the existing ordinary anti-corrosion coatings are used for impregnation of shield metal embedded parts, and the construction time limit is 7 to 10 days, resulting in high construction costs and low construction efficiency.

Method used

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  • Thin-coating type high-corrosion-resistance impregnating coating as well as preparation method and application thereof
  • Thin-coating type high-corrosion-resistance impregnating coating as well as preparation method and application thereof
  • Thin-coating type high-corrosion-resistance impregnating coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1, the preparation of thin coating type high anti-corrosion impregnation coating A-1

[0055] (1), the preparation of thin coating type high anti-corrosion impregnation paint A-1 comprises the following steps:

[0056] (1), preparation of modified epoxy resin liquid

[0057] Add 30kg cyclohexanone, 25kg methyl isobutyl ketone and 5kg methyl amyl ketone into the reaction kettle, start stirring, control the speed at 100-200 rpm, then slowly add 30kg 901 epoxy resin, and slowly heat up to 80°C, control the stirring speed at 300 rpm, keep warm until the 901 epoxy resin is completely dissolved, cool to 45°C ± 5°C, add 10kg epoxy modified silicone resin SMH-60, control the stirring speed at 300 rpm , until it is stirred into a uniform transparent liquid, the solid content is 36% (m / m), and the material is filtered and discharged with an 80 mesh sieve to obtain a modified epoxy resin liquid.

[0058] (2), preparation of component A

[0059] Add the modified epoxy...

Embodiment 2

[0072] Embodiment 2, the preparation of thin coating type high anti-corrosion impregnation coating A-2

[0073] (1), the preparation of thin coating type high anti-corrosion impregnation coating A-2 comprises the following steps:

[0074] (1), preparation of modified epoxy resin liquid

[0075] Add 20kg of cyclohexanone, 15kg of methyl isobutyl ketone and 7.5kg of methyl amyl ketone into the reaction kettle, start stirring, control the speed at 100-200 rpm, then slowly add 22.5kg of 904 epoxy resin, Slowly heat up to 98°C, stirring at 300 rpm, keep warm until 904 epoxy resin is completely dissolved, cool to 45°C ± 5°C, add 35kg SMH-30 epoxy modified silicone resin, stirring at 300 rpm until it is stirred into a uniform transparent liquid, the solid content is 40% (m / m), and the material is filtered and discharged with an 80 mesh sieve to obtain a modified epoxy resin liquid.

[0076] (2), preparation of component A

[0077] Add 22kg modified epoxy resin solution, 8kg phenol...

Embodiment 3

[0090] Embodiment 3, the preparation of thin coating type high anti-corrosion impregnation coating A-3

[0091] (1), the preparation of thin coating type high anti-corrosion impregnation paint A-3 comprises the following steps:

[0092] (1), preparation of modified epoxy resin liquid

[0093] Add 15kg cyclohexanone, 20kg methyl isobutyl ketone and 5kg methyl amyl ketone in the reactor, start stirring, control the rotating speed to be 100-200 rpm, then slowly add 20kg 909 epoxy resin, slowly Heat up to 140°C, control the stirring speed to 300 rpm, keep warm until the 909 epoxy resin is completely dissolved, cool to 45°C±5°C, add 40kg epoxy modified silicone resin SMH-30, and stir at 300 rpm until it is stirred into a uniform transparent liquid, the solid content is 40% (m / m), and the material is filtered and discharged with an 80 mesh sieve to obtain a modified epoxy resin liquid.

[0094] (2), preparation of component A

[0095] Add 25kg of the modified epoxy resin solution...

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Abstract

The invention discloses a thin-coating type high-corrosion-resistance impregnating coating, which comprises a component A and a component B. The component A comprises the following components in percentage by weight: 15-25% of modified epoxy resin liquid; 2-22% of phenolic resin; 25-35% of pigment and filler; 2-10% of an auxiliary agent I; 28-38% of a solvent I; the component B comprises the following components in percentage by weight: 1-8% of an assistant II; and 92-99% of a solvent II; when in use, the component A and the component B are uniformly mixed and stirred according to the weight ratio of 1: 1-12: 1. The invention further discloses a preparation method, a construction method and an application of the coating. After the coating disclosed by the invention is coated on the surfaceof a metal component, the thickness of a paint film is small, and the coating has excellent processing formability, adhesive force, mechanical property, acid resistance and alkali resistance; meanwhile, excellent neutral salt mist resistance and copper ion accelerated salt mist resistance are achieved; and the construction process is simple and convenient, energy is saved, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a thin-coated high-corrosion-resistant dipping coating and a preparation method and application thereof. Background technique [0002] Metal components are made of metal, which have a wide range of applications and various shapes, and play a very important role in engineering. Embedded parts, pipe brackets and suspension brackets are all metal components. The surface of metal components needs to be coated with a layer of paint film to improve its mechanical properties and meet the requirements of its acid resistance, alkali resistance and corrosion resistance. Due to the different shapes of metal components, it is difficult for ordinary spraying and brushing processes to meet the requirements of paint film uniformity and anti-corrosion, so the dip coating process is usually used: the paint is placed in the paint tank, and the entire metal component is dipped in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D183/04C09D161/06C09D5/08C09D7/61
CPCC09D163/00C09D183/04C09D5/08C09D7/61C08K2003/3045C08K2003/2241C08K2003/328C08L83/04C08L61/06C08K3/22C08K3/34C08K3/30C08L63/00C08K3/32
Inventor 许丽丽苏琴张卫群孙蔚陆静雯
Owner SHANGHAI HUAYI FINE CHEM CO LTD
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