Water-based rust transfer primer applicable to rusted steel surface and its preparation method

A primer and water-based technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of poor environmental friendliness, and achieve the effects of avoiding resin dechlorination and decomposition, improving shear stability, and small particle size

Active Publication Date: 2017-09-12
NANJING CHANGJIANG PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large number of aromatic hydrocarbons, alkanes, ketones and ester solvents are used in the construction process, and the environmental friendliness is poor

Method used

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  • Water-based rust transfer primer applicable to rusted steel surface and its preparation method
  • Water-based rust transfer primer applicable to rusted steel surface and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of vinylidene chloride-acrylonitrile-acrylic acid ester multiple copolymerization emulsion: the vinylidene chloride of 75 mass parts, the acrylonitrile of 5 mass parts, the acrylic acid of 2.5 mass parts, the isooctyl acrylate of 15 mass parts , the mixed surfactant of 4 mass parts (the mixture of nonylphenol polyoxyethylene base ether, methacryloyloxyethyltrimethylammonium chloride and cetyltrimethylammonium bromide, the mixture of the three The ratio is 1:1.5:1), and 100 parts by mass of water are stirred to make a monomer pre-emulsion. Take 1 / 5 of the above-mentioned mixed monomer pre-emulsion and put it into the reactor protected by nitrogen, and raise the temperature to 60°C. 0.6 parts by mass of azobisisobutylamidine hydrochloride initiator was formulated into a 10% aqueous solution, and 1 / 5 of the aqueous initiator solution was added to the reactor, and stirred for 1 hour of polymerization. The remaining mixed monomer pre-emulsion and initiator a...

Embodiment 2

[0033] (1) Preparation of vinylidene chloride-acrylonitrile-acrylate multi-component copolymer emulsion: same as Example 1.

[0034] (2) Preparation of aqueous dispersion of phosphate-modified polyacrylate: same as in Example 1.

[0035] (3) Preparation of water-based rust transfer primer: Add 0.8 parts by mass of Digao Dispers 757W wetting and dispersing agent, 0.2 parts by mass of Degussa AEROSIL 200 fumed silica, 7 parts by mass into water of 11 parts by mass under stirring. Parts by mass of iron oxide black pigment, 12 parts by mass of precipitated barium sulfate, 5 parts by mass of sericite, and 0.05 parts by mass of Dego Foamex810 defoamer were stirred and dispersed until uniform without agglomeration to obtain a slurry. Subsequently, use a sand mill to grind until the slurry fineness is less than 40 μm. Add 30 mass parts of vinylidene chloride-acrylonitrile-acrylic acid ester multi-copolymer emulsion, 30 mass parts of phosphoric acid ester modified polyacrylate aqueous...

Embodiment 3

[0044] (1) Preparation of vinylidene chloride-acrylonitrile-acrylic acid ester multiple copolymerization emulsion: the n-butyl acrylate of the vinylidene chloride of 60 mass parts, the acrylonitrile of 8 mass parts, the acrylic acid of 3 mass parts, 10 mass parts , the mixed surfactant of 3 mass parts (the mixture of nonylphenol polyoxyethylene base ether, methacryloyloxyethyltrimethylammonium chloride and cetyltrimethylammonium bromide, the mixture of the three The ratio is 1:1.5:1), and 100 parts by mass of water are stirred to make a monomer pre-emulsion. Take 1 / 5 of the above-mentioned mixed monomer pre-emulsion and put it into the reactor protected by nitrogen, and raise the temperature to 60°C. 0.4 parts by mass of azobisisobutylamidine hydrochloride initiator was formulated into a 10% aqueous solution, and 1 / 5 of the aqueous initiator solution was added to the reactor, and stirred for 1 hour of polymerization. The remaining mixed monomer pre-emulsion and initiator aque...

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Abstract

The invention discloses a water-based rust transfer primer applicable to a rusted steel surface and its preparation method. The water-based rust transfer primer is applied to the rusted steel surface. The water-based rust transfer primer is prepared from vinylidene chloride-acrylonitrile- acrylate multi-copolymerization emulsion, phosphate modified polyacrylate water dispersing body, non-ionic wet dispersing agent, anti-settling agent, pigment, filler, polyether siloxane defoaming agent, coalescing agent, base material wetting agent, isothiazolinone, polyurethane associated thickening agent and water. The water-based rust transfer primer is one-component and self-drying type product; the water-based rust transfer primer has the advantages of being high in storage stability and good in rust transferring efficiency; the formed coating has excellent water vapor isolating property and long-acting corrosive resistance.

Description

technical field [0001] The invention relates to a water-based primer which is applied to the surface of corroded steel and has rust conversion and anti-corrosion properties and a preparation method thereof. Background technique [0002] Steel is the most used metal material in modern society. The loss caused by corrosion of steel is not only reflected in the damage to the shape, color and mechanical properties of the material, but more importantly, the quality level of its products and projects is reduced, the accuracy and sensitivity are damaged, and its use value is affected or even scrapped. In individual cases, it may even cause serious accidents involving aircraft crashes and fatalities. [0003] The application of anti-corrosion coatings is currently the main means of controlling steel corrosion. In order to obtain excellent protection effect, traditional anti-corrosion coatings need to carry out strict derusting treatment on the substrate before construction. Among...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/08C09D143/02C09D133/12C09D5/08C09D7/12C08F214/12C08F230/02C08F220/14C08F220/46C08F220/06C08F220/18C08F2/28C08F2/30
CPCC09D127/08C08F2/28C08F2/30C08F214/12C08F220/14C08F230/02C09D5/08C08K2003/2275C08K2003/3045C08L2205/035C08L43/02C08K13/02C08K3/36C08K3/22C08K3/30C08K3/34C08L33/12C08K3/346C08K3/04C08F220/46C08F220/06C08F220/1808C08F220/1804
Inventor 陈钊聪
Owner NANJING CHANGJIANG PAINT
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