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A kind of waterborne nano anticorrosion coating and preparation method thereof

A kind of anti-corrosion coating, nano-technology, applied in anti-corrosion coatings, alkali metal silicate coatings, coatings, etc., can solve the problems of faster reaction speed, higher viscosity of paint liquid, inactivation of surfactants, etc., and achieve mechanical isolation Improvement of performance, improvement of dispersion effect, and effect of increasing cross-linking density

Active Publication Date: 2022-04-05
SHENYANG RES INST OF CHEM IND +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of these surfactants with active groups to the oil phase will cause a reaction, leading to the deactivation of the surfactant, and due to the generation of crosslinking reactions, the viscosity of the paint liquid will increase and even cause the paint liquid to solidify, which seriously affects the paint. storage stability
The hydrophilic groups of general non-ionic surfactants are all polyhydroxyl or polycarboxyl structures. The storage of surfactants with such structures is unstable, and at the same time, the reaction speed after the two components are mixed will become faster, and there will be reaction heating, Problems such as rapid temperature rise and excessive foaming in the system

Method used

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  • A kind of waterborne nano anticorrosion coating and preparation method thereof
  • A kind of waterborne nano anticorrosion coating and preparation method thereof
  • A kind of waterborne nano anticorrosion coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The method of polyether surfactant modification is as follows:

[0046] In parts by weight, 67 parts of L31 polyether surfactant (wherein, PPO molecular weight 950, EO content 10%), 30 parts of MDI-50 isocyanate monomer, 3 parts of DY-12 (dibutyltin dilaurate) are fully After stirring and mixing evenly, heat to 60°C, react for 1 hour, and then let stand to room temperature. The modified polyether surfactant 01 was obtained.

[0047] Add the modified polyether surfactant obtained above to the water-based nano-coating to prepare the coating. See Table 3 for the specific formula.

[0048] Table 3 water-based nano-coating preparation formula table

[0049]

[0050]

[0051] Note: The surfactant used in component B is CUCAT-WN, a product of Guangzhou Yourun Synthetic Materials Co., Ltd.

[0052] The preparation method is:

[0053] 1) Put 60 parts of polymerized MDI into the dispersion tank, add 26 parts of phthalate, 0.1 part of modified surfactant, 0.1 part of tri...

Embodiment 2-22

[0058] According to the synthetic step of the modified polyether surfactant in the above-mentioned embodiment 1, the polyether surfactant and the isocyanate are replaced according to records in Table 4 (simultaneously, if the polyether surfactant is solid or pasty, it can be Dissolve by pressurization, heating, etc., and then carry out terminal hydroxyl modification after treatment.), the synthesis method of other components in the modification process remains unchanged, and the composition and proportion of water-based nano-coating preparation remain unchanged, that is, different modified coatings can be obtained. Coating materials with polyether surfactants. Simultaneously, comparative example 1 does not add polyether surfactant, and other formula composition and proportioning are consistent with embodiment 1;

[0059] Table 4 Types and materials of modified polyether surfactants

[0060]

[0061]

[0062] The anticorrosion performance test data of each embodiment of ...

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Abstract

The invention relates to the anticorrosion technology of water-based nano coatings, in particular to a water-based nano anti-corrosion coating and a preparation method thereof. The coating is composed of an oily component A and an aqueous solution of inorganic silicate component B, and a modified polyether surfactant is added to the oily component A, wherein the modified polyether surfactant accounts for 0.1% of the mass of the oily component A -10%. The present invention adds a series of modified polyether surfactants to the paint. The addition of the surfactant is beneficial to improve the dispersion effect, so that the degree of crosslinking of the paint film after curing is improved, and then the surface activity of the polyether with terminal hydroxyl groups is increased. The agent can be used in anti-corrosion coating products, and solves the dispersion problem of the organic phase and inorganic phase of the water-based nano-anti-corrosion coating, and greatly reduces the size of the inorganic particles in the water-based nano-anti-corrosion coating.

Description

technical field [0001] The invention relates to the anticorrosion technology of the water-based nano coating, in particular to a water-based nano anti-corrosion coating which improves the anti-corrosion performance of the water-based nano coating by adding a modified polyether surfactant and a preparation method thereof. Background technique [0002] Water-based nano anti-corrosion coatings not only have the characteristics of low VOC, no organic diluent, environmental protection and flame retardant, but also have physical properties such as high mechanical strength, excellent wear resistance and scratch resistance. Anti-corrosion properties such as acid and alkali resistance and organic solvent resistance. The water-based nano anti-corrosion coating is based on the oily component A, and the aqueous inorganic silicate solution is dispersed into the oily resin as the component B to form a film. After curing, the film shows a sea-island effect, in which the resin layer is uni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/04C09D5/08C09D7/65C08G65/333
CPCC09D1/04C09D5/08C09D7/65C08G65/33358C08G65/33351
Inventor 吴井龙张宇孔凡厚滕赟王佳妮王新张学龙宋丽凤黄月
Owner SHENYANG RES INST OF CHEM IND