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Water-based air-drying protective coating for escalator and coating process of water-based air-drying protective coating in humid environment

A technology of protective coatings and water-based epoxy coatings, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of difficult to achieve water-based coatings, easy to sag, slow drying, etc., to improve the anti-flash corrosion ability and water resistance, The effect of reducing flash rust and increasing permeability

Active Publication Date: 2015-12-30
GUANGZHOU KINTE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an escalator aiming at the technical problems that the oily coating process in the prior art of escalator coating is difficult to realize the coating of the water-based paint, and the one-time thick coating of the water-based paint is slow to dry, easy to flash rust, and easy to hang in a humid environment. Water-based self-drying protective coating

Method used

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  • Water-based air-drying protective coating for escalator and coating process of water-based air-drying protective coating in humid environment
  • Water-based air-drying protective coating for escalator and coating process of water-based air-drying protective coating in humid environment

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preparation example Construction

[0037] (1) Preparation of epoxy phosphate prepolymer: Add 10 to 20 parts of epoxy resin 128 and 5 to 10 parts of n-butanol to a tank equipped with constant pressure funnel, hygrometer, reflux condenser and stirring device In the four-necked baking bottle, heat and stir to 110°C. After the epoxy resin is completely dissolved, slowly add 0.5 to 1.0 parts of phosphoric acid into the four-necked baking bottle, then reflux for 2-3 hours, and then through decompression Recover n-butanol by distillation to obtain epoxy phosphate prepolymer.

[0038] (2) First, 2.0-5.0 parts of deionized water is used to dissolve 0.25%-0.75% of the initiator of the total amount of acrylate monomers to obtain an initiator solution.

[0039] (3) Add 10.0-15.0 parts of deionized water, 0.5-1.5 parts of emulsifier vinyl alkyl phosphate APEO270 into the reaction vessel, stir at high speed for 20 minutes, then add 5.0-10.0 parts of methyl methacrylate and benzene Ethylene compound (methyl methacrylate: sty...

Embodiment 6

[0053] (1) Degrease and polish the escalator workpiece;

[0054] (2) The water-based self-drying protective coating for escalators is diluted with deionized water, sprayed on the surface of the escalator workpiece with a high-pressure mixed air spray gun in a humid and ventilated environment, and the coating film is self-drying at room temperature.

[0055] The 25°C application viscosity of the diluted escalator water-based self-drying protective coating is tested with a rotational viscometer. The viscosity at 6 rotations is 5000-7000 rotations, and the viscosity at 60 rotations is 2000-2500 rotations. The thixotropic value of the paint construction is between 2.5-3.5 . The drying method is self-drying at room temperature, dry to the touch within 30-45 minutes, completely dry after 5-7 days, and after 6 hours of curing at room temperature, it will not foam or turn white when exposed to rain. One-time thick coating is greater than 60 microns dry film thickness.

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Abstract

The invention discloses a water-based air-drying protective coating for an escalator. The water-based air-drying protective coating comprises the following components in parts by weight: 80-100 parts of a self-oxidation-drying water-based epoxy coating, 0-20 (except 0) parts of swelling type drying promoting emulsion resin, 0.5-2 parts of a phase stabilizing aid and 1-2 parts of a corrosion inhibition aid. The invention further discloses a coating process of the water-based air-drying protective coating in a humid environment. The water-based air-drying protective coating is applicable to the flow line production of oily coating lines of escalators in the prior art, and the rapid-drying capacity, the flash-rust resistance, the once thick-coating sagging resistance and the corrosion resistance of the coating are achieved under humid conditions.

Description

technical field [0001] The invention relates to a water-based self-drying protective coating, in particular to a water-based self-drying protective coating for escalators. The invention also relates to the coating process of the water-based self-drying protective paint for the escalator in a humid environment. Background technique [0002] Following the publication of the "Volatile Organic Compounds Pollutant Discharge Pilot Measures" on October 1, 2015, people's awareness of environmental protection is increasing, and the regulations on the discharge of toxic solvents into the atmosphere are becoming increasingly stringent. Replacing organic solvents with water has become an inevitable trend in the development of the coatings industry. . Water-based self-drying protective coatings are becoming more and more popular in the market because they use water as a solvent and avoid flammable and explosive safety problems caused by benzene and other organic solvents, as well as env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D5/08C09D7/12C08F283/10C08F220/14C08F212/08C08F220/06
Inventor 许奕祥姚煌张红禹汉文
Owner GUANGZHOU KINTE IND
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