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Preparation method for long-acting anticorrosive paint

A long-term anti-corrosion and coating technology, which is applied in the direction of anti-corrosion coatings, fire-proof coatings, epoxy resin coatings, etc., can solve the problems that the corrosion resistance effect of coatings is not obvious and the corrosion resistance is reduced, and achieve fast curing speed and long-term corrosion resistance Sexuality and structure scientific and reasonable effect

Inactive Publication Date: 2018-06-08
合肥威希特汽车配件加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of preparation method of long-acting anticorrosion coating, to solve some unreasonable factors in the process of preparation of some coatings proposed in the above-mentioned background technology, in the process of existing coating preparation due to The corrosion resistance effect of the coating is not obvious due to the difference in proportion and materials used, and the corrosion resistance will be reduced after a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method for long-acting anticorrosive paint, comprising the steps of:

[0022] Step 1: material preparation, preparation of component A: bisphenol A epoxy resin, polyepichlorohydrin epoxy resin, reactive diluent, synthesis of polyepichlorohydrin epoxy resin: take 1.0mol of diol, Specifically, it is one of ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, dipropylene glycol, and hexanediol, and at the same time add (mass fraction) 0.5% catalyst, the catalyst is phosphorus hexafluoride triethoxy salt , tin tetrachloride, boron trichloride ethyl ether complex, boron trifluoride tetrahydrofuran complex, and then dropwise add 10mol of epichlorohydrin, the temperature is controlled at 50 ° C, N2 is passed, stirred, kept warm for 4 hours, and the ring is measured The oxygen value is 0, and 2.2mol of NaOH is made into a solution with a concentration of 30%, and added dropwise to the above reaction, kept at 80°C for 3.5h, washed with deionized w...

Embodiment 2

[0030] A preparation method for long-acting anticorrosive paint, comprising the steps of:

[0031] Step 1: material preparation, preparation of component A: bisphenol A epoxy resin, polyepichlorohydrin epoxy resin, reactive diluent, synthesis of polyepichlorohydrin epoxy resin: take 1.0mol of diol, Specifically, it is one of ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, dipropylene glycol, and hexanediol, and at the same time add (mass fraction) 3% catalyst, the catalyst is phosphorus hexafluoride triethoxy salt , tin tetrachloride, boron trichloride ethyl ether complex, boron trifluoride tetrahydrofuran complex, and then dropwise add 18mol of epichlorohydrin, the temperature is controlled at 65 ° C, N2 is passed, stirred, kept warm for 6 hours, and the ring is measured The oxygen value is 0, and 2.4mol of NaOH is made into a solution with a concentration of 35%, which is added dropwise to the above reaction, kept at 85°C for 5h, washed with deionized ...

Embodiment 3

[0039] A preparation method for long-acting anticorrosive paint, comprising the steps of:

[0040] Step 1: material preparation, preparation of component A: bisphenol A epoxy resin, polyepichlorohydrin epoxy resin, reactive diluent, synthesis of polyepichlorohydrin epoxy resin: take 1.0mol of diol, Specifically, it is one of ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, dipropylene glycol, and hexanediol, and at the same time add (mass fraction) 5% catalyst, the catalyst is phosphorus hexafluoride triethoxy salt , tin tetrachloride, boron trichloride ethyl ether complex, boron trifluoride tetrahydrofuran complex, and then dropwise add 25mol of epichlorohydrin, the temperature is controlled at 80 ° C, N2 is passed, stirred, kept warm for 8 hours, and the ring is measured The oxygen value is 0, and 2.6 mol of NaOH is made into a solution with a concentration of 40%, which is added dropwise to the above reaction, kept at 90°C for 6h, washed with deionized...

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Abstract

The invention discloses a preparation method for long-acting anticorrosive paint. The preparation method comprises the following steps: A, preparing a component A: putting bisphenol A epoxy resin, poly(epoxy chloropropane) polyepichlorohydrin epoxy resin and a reactive diluent into a mixer to mix at a uniform speed at a temperature of 42-62 DEG C, adding a dispersing agent, a de-foaming agent, antioxidant and a stabilizer to uniformly mix, performing high-speed dispersion, cooling to room temperature, grinding twice by a grinder while cooling the room temperature, detecting that the fineness to beis 20-50 [mu]m through a scraper fineness meter, and packaging after the fineness is detected to be qualifieddetecting is approved; and preparing a component B: adding glycidyl epoxy propyl alkylether amine, low molecular polyamide, trisphenol and benzyl alcohol into a vessel, heating to 28-45 DEG C to uniformly mix, cooling to the room temperature, and packaging after detecting to be qualifiedis approved. A cross-linked and cured paint film forms a cross-linking state which mutually penetrates a network, so that the product becomes an insoluble substance, shows very strong long-acting adhesion, long-acting chemical resistance, long-acting corrosion resistance and long-acting impact resistance, is non-toxic and harmless, and has fire resistance.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a preparation method of a long-acting anticorrosive paint. Background technique [0002] Anti-corrosion coatings, generally divided into conventional anti-corrosion coatings and heavy-duty anti-corrosion coatings, are an indispensable coating in paint coatings. Conventional anti-corrosion coatings play an anti-corrosion effect on metals under normal conditions and protect the service life of non-ferrous metals; A type of anti-corrosion coating that achieves a longer protection period than conventional anti-corrosion coatings. [0003] However, there are still some unreasonable factors in the preparation process of the existing coatings. Due to the different proportions and materials used in the preparation process of the existing coatings, the corrosion resistance effect of the coatings is not very obvious. In order to improve the long-term corrosion resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D5/18C08G59/56
Inventor 何宗玉
Owner 合肥威希特汽车配件加工有限公司
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