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Active and anticorrosive water-based paint and preparation method thereof

An anti-corrosion coating and active technology, which is applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of poor dispersion stability of water-based coatings against strong mechanical forces, single function of anti-corrosion coatings, and low solid content. Excellent weather resistance, stable conductivity, and strong adhesion

Active Publication Date: 2015-11-04
JIANGSU XIN AN NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many kinds of water-based anti-corrosion coatings on the market, but they generally have the disadvantage of low solid content, which will increase the cost of manufacturers. Therefore, the development of anti-corrosion coatings with high solid content is the focus of scientific researchers; in addition , the function of a single system of anti-corrosion coatings is relatively single, and there are some shortcomings in application; the compactness of water-based coatings also needs to be improved, so as to improve the mechanical properties of coatings; water-based coatings have higher requirements on the cleanliness of the substrate surface and the construction process , due to the high surface tension of water, dirt is easy to cause shrinkage of the coating film, and the dispersion stability of water-based coatings against strong mechanical forces is poor. When the flow rate in the pipeline changes sharply, the dispersed particles are compressed into solid particles, making the coating membrane pitting
Furthermore, water-based anti-corrosion coatings fundamentally rely on the hydrophilization of film-forming resins. There are two ways to hydrophilize resins: self-emulsification and external emulsification. No matter which way, substances containing hydrophilic functional groups must be introduced. , in the self-crosslinking system, the general hydrophilic functional groups of the coating film are still free, and have not been cross-linked into hydrophobic segments, which will inevitably affect the properties of the coating film such as medium resistance and corrosion resistance

Method used

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  • Active and anticorrosive water-based paint and preparation method thereof
  • Active and anticorrosive water-based paint and preparation method thereof
  • Active and anticorrosive water-based paint and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] The present embodiment provides a kind of water-based active anticorrosion coating, and its composition is as follows by mass parts:

[0044]

[0045] The present embodiment also provides a kind of preparation method of water-based active anticorrosion coating, and the preparation steps are as follows:

[0046] Step (1): first prepare petroleum resin with a solid content of 30%, mix the petroleum resin and organic solvent in a mass ratio of 3:7, and stir and disperse in the stirring tank, the stirring speed is 500r / min, and the stirring time is 90min. Stir until colorless transparent viscous liquid, set aside;

[0047] Step (2): Then add the petroleum resin, epoxy resin, silicon carbide, organic active agent and water-based solvent with a solid content of 30% prepared in step (1) into the stirring tank and stir evenly at a stirring speed of 500r / min , stirring time 90min;

[0048]Step (3): Finally, add zinc naphthenate and a surfactant and stir at a low speed for 3...

Embodiment 2

[0054] The present embodiment provides a kind of water-based active anticorrosion coating, and its composition is as follows by mass parts:

[0055]

[0056] The present embodiment also provides a kind of preparation method of water-based active anticorrosion coating, and the preparation steps are as follows:

[0057] Step (1): first prepare petroleum resin with a solid content of 30%, mix the petroleum resin and organic solvent in a mass ratio of 3:7, and stir and disperse in the stirring tank, the stirring speed is 800r / min, and the stirring time is 60min. Stir until colorless transparent viscous liquid, set aside;

[0058] Step (2): Then add the petroleum resin, epoxy resin, silicon carbide, organic active agent and water-based solvent with a solid content of 30% prepared in step (1) into the stirring tank and stir evenly at a stirring speed of 800r / min , stirring time 60min;

[0059] Step (3): Finally, add zinc naphthenate and a surfactant and stir at a low speed for ...

Embodiment 3

[0064] The present embodiment provides a kind of water-based active anticorrosion coating, and its composition is as follows by mass parts:

[0065]

[0066] The present embodiment also provides a kind of preparation method of water-based active anticorrosion coating, and the preparation steps are as follows:

[0067] Step (1): first prepare petroleum resin with a solid content of 30%, mix the petroleum resin and organic solvent in a mass ratio of 3:7, and stir and disperse in the stirring tank, the stirring speed is 650r / min, and the stirring time is 75min. Stir until colorless transparent viscous liquid, set aside;

[0068] Step (2): Then add the petroleum resin, epoxy resin, silicon carbide, organic active agent and water-based solvent with a solid content of 30% prepared in step (1) into the stirring tank and stir evenly at a stirring speed of 650r / min , stirring time 75min;

[0069] Step (3): Finally, add zinc naphthenate and surfactant and stir at a low speed for 32...

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Abstract

The invention belongs to the field of the chemical industry and relates to anticorrosive paint and in particular relates to active and anticorrosive water-based paint and a preparation method thereof. The paint comprises the following components in parts by mass: 15-35 parts of epoxy resin, 20-40 parts of petroleum resin with solid content of 30%, 2-15 parts of silicon carbide, 0.5-8 parts of zinc naphthenate, 30-45 parts of organic active agent, 2-4 parts of water-based solvent and 1-3 parts of surfactant. The product has the beneficial effects that the product can be used under severe conditions, has long-acting anticorrosive property, has dry film thickness over 300mu m and has excellent weather resistance, aging resistance, radiation resistance, wear resistance and impact resistance and good thermal stability; the paint has strong adhesion and can undergo spray moulding on random curved surfaces, slopes and vertical surfaces, without sagging; the paint is efficient and convenient, a formula system can be randomly adjusted, and normal-temperature self-solidification of inorganic paint can be authentically realized; besides, a coating has self-repair property, can be still protected from local scratches caused by external forces and is free from cutting and welding damages; the quality of tape coating welding is not affected.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to an anti-corrosion coating, in particular to a water-based active anti-corrosion coating and a preparation method thereof. Background technique [0002] At present, there are many kinds of water-based anti-corrosion coatings on the market, but they generally have the disadvantage of low solid content, which will increase the cost of manufacturers. Therefore, the development of anti-corrosion coatings with high solid content is the focus of scientific researchers; in addition , the function of a single system of anti-corrosion coatings is relatively single, and there are some shortcomings in application; the compactness of water-based coatings also needs to be improved, so as to improve the mechanical properties of coatings; water-based coatings have higher requirements on the cleanliness of the substrate surface and the construction process , due to the high surface tension of water,...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D157/02C09D5/08C09D7/12
Inventor 杨松林吴福娣陈晓兵
Owner JIANGSU XIN AN NEW MATERIALS TECH
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