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Acrylic emulsion with self-crosslinked core-shell structure, and preparation method of acrylic emulsion

A technology of self-crosslinking acrylic acid and core-shell structure, which is applied in coatings, anti-corrosion coatings, fire-proof coatings, etc. It can solve the problems of poor comprehensive performance of acrylic emulsion, poor dispersion of small molecule corrosion inhibitors, unstable corrosion resistance, etc. problems, to achieve the effect of changing strength and toughness, improving protection performance, and improving compatibility

Active Publication Date: 2017-07-25
HUIZHOU CITY HUIYANG DISTRICT JIATAI PAINT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At the same time, in the anti-corrosion application of industrial coatings, the corrosion resistance of the paint film is delayed by adding a certain corrosion inhibitor to the resin emulsion. However, the corrosion inhibitor as a small molecule is easy to migrate in the paint film, resulting in its corrosion resistance effect. It is not stable, and the dispersion of small molecule corrosion inhibitors in the paint film is poor, and it cannot fully exert the corresponding corrosion resistance effect on the paint film surface
[0005] At present, the research on the synthesis of corrosion-resistant acrylic emulsion mainly focuses on the improvement of acrylic monomer, functional monomer, structure and synthesis method. The preparation method is complicated, the cost is high, and the comprehensive performance of the prepared acrylic emulsion is not very good.

Method used

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  • Acrylic emulsion with self-crosslinked core-shell structure, and preparation method of acrylic emulsion
  • Acrylic emulsion with self-crosslinked core-shell structure, and preparation method of acrylic emulsion

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Embodiment 1

[0039]The raw materials are as follows: based on 100 parts of the total weight of the core raw materials, the amount of acrylic hard monomer (styrene and methyl methacrylate weight ratio 1:1) is 30 parts, and the amount of self-crosslinking monomer I (diacetone acrylamide) The amount of vinylidene chloride is 5 parts, the amount of vinylidene chloride is 10 parts, the amount of organic corrosion inhibitor (benzotriazole) is 1 part, the amount of emulsifier I (sodium dodecylbenzenesulfonate) is 2 parts, and the amount of initiator I ( Potassium persulfate) is 1 part, and the balance is deionized water; based on 100 parts of the total weight of raw materials for the shell part, acrylic soft monomer (butyl acrylate and 2-ethylhexyl acrylate weight ratio 1:1) The dosage is 20 parts, the dosage of self-crosslinking monomer II (dihydrazine adipate) is 5 parts, the organic fluorine active monomer (dodecafluoroheptyl methacrylate) is 10 parts, the phosphoric ester monomer (PAM-100 ) i...

Embodiment 2

[0049] The raw materials are as follows: based on 100 parts of the total weight of the core raw materials, the amount of acrylic hard monomer (styrene and methyl methacrylate weight ratio 1:3) is 40 parts, self-crosslinking monomer I (acetoacetate methyl methacrylate) Glycol ester) dosage is 10 parts, vinylidene chloride dosage is 15 parts, organic corrosion inhibitor (mercaptobenzothiazole) dosage is 4 parts, emulsifier I (alkylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether Weight ratio 1:1) dosage is 4 parts, initiator I (sodium persulfate) dosage is 3 parts, and the balance is deionized water; Hydroxyethyl ester (weight ratio 1:2) is 35 parts, self-crosslinking monomer II (succinic acid dihydrazide) is 10 parts, organic fluorine active monomer (hexafluorobutyl acrylate) is 15 parts, phosphate The amount of monomer (PAM-200) is 5 parts, the amount of emulsifier II (alkylphenol polyoxyethylene ether phosphate) is 10 parts, the amount of initiator II (sod...

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Abstract

The invention relates to an acrylic emulsion with a self-crosslinked core-shell structure, and a preparation method of the acrylic emulsion. The preparation method comprises the following steps: compounding acrylic hard monomers and acrylic soft monomers, adding functional monomers such as vinylidene, phosphate monomers and organic fluorine active monomers, adding self-crosslinked monomers to obtain the acrylic emulsion with the self-crosslinked core-shell structure by using an emulsion polymerization method under the special emulsifier combination. Through core-shell interpenetration technology and special raw material matching, the emulsion has good water resistance and corrosion resistance performances, is high in adhesion force, has excellent comprehensive performance, and can be directly coated into maintenance engineering of various steel structure members and mechanical equipment, and the like, thus having wide application prospects.

Description

technical field [0001] The invention relates to the field of polymer emulsion synthesis, in particular to a self-crosslinking acrylic acid emulsion with a core-shell structure and a preparation method thereof. Background technique [0002] The application of metal materials has become more and more extensive, especially steel, which is used in many important fields, so its protective measures have received great attention. The performance and effect of water-based rust or anti-rust coatings in the market are not ideal, because the acrylate emulsion they use has poor water resistance, corrosion resistance and physical and chemical indicators, and cannot achieve the expected effect. The main reasons for the poor corrosion resistance of water-based acrylic antirust emulsions are as follows: ①The existence of hydrophilic emulsifiers makes the water resistance of the film poor; ②Flash rust and flash corrosion problems in water-based coatings; Poor compactness, poor salt spray re...

Claims

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Application Information

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IPC IPC(8): C08F265/04C08F220/18C08F220/22C08F220/28C08F220/14C08F212/08C08F220/58C08F214/08C08F222/14C08F2/30C08F2/26C09D151/00C09D5/08
CPCC09D151/003C08F2/26C08F2/30C08F212/08C08F220/14C08F265/04C09D5/08C09D5/18C08F220/58C08F214/08C08F220/1808C08F222/102C08F220/281C08F220/1804
Inventor 周学军
Owner HUIZHOU CITY HUIYANG DISTRICT JIATAI PAINT CO LTD
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