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Waterborne inorganic zinc-rich primer and preparation method thereof

An inorganic zinc-rich and primer technology, which is applied in coatings, alkali metal silicate coatings, anti-corrosion coatings, etc., can solve the problems of long-term maintenance inconvenience, high construction cost, and reduced structural strength, and achieve long-term maintenance and weather resistance Good performance and reduced construction cost

Active Publication Date: 2017-09-29
JIANGSU BANGJIE ANTI CORROSION THERMAL INSULATIONTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Steel, aluminum alloy, etc. exposed to air or corrosive liquid for a long time, are easily corroded by oxygen or electrolyte solution, resulting in a decrease in structural strength, seriously affecting appearance and service life
At present, the domestic steel structure anti-corrosion coating primer is mainly solvent-based epoxy resin primer. Since the epoxy resin contains aromatic ether bonds, the paint film is easily degraded after being irradiated by sunlight (ultraviolet rays). Poor durability, regular re-spraying is often required, high construction cost, and inconvenience to long-term maintenance

Method used

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  • Waterborne inorganic zinc-rich primer and preparation method thereof
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  • Waterborne inorganic zinc-rich primer and preparation method thereof

Examples

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Embodiment 1

[0033] Preparation of waterborne inorganic zinc-rich primer S-01

[0034] S101. Preparation of functional monomers: react 3 mol of polyether PPG800 with 2 mol of diphenylmethane diisocyanate to prepare an elastomer with a degree of polymerization of terminal hydroxyl groups of 3. The reaction equation is: , the prepared elastomer is abbreviated as OH-P-OH; react 2mol elastomer with 1mol maleic anhydride to obtain functional monomer, and the reaction equation is:

[0035] S102. the preparation of water-based modified acrylic resin emulsion, comprising:

[0036] a) Add 0.2g of alkylphenol polyoxyethylene ether and 30g of water into the reactor and stir evenly, raise the temperature to 78°C, and keep it warm;

[0037] b) dissolving 0.4g of sodium persulfate in 15g of water to obtain an aqueous solution of sodium persulfate, and dividing the aqueous solution of sodium persulfate into 4 parts, and adding 1 part thereof to the reaction kettle;

[0038] c) Mix 22g of functional ...

Embodiment 2

[0042] Preparation of waterborne inorganic zinc-rich primer S-02

[0043] S101. Preparation of functional monomers: react 3 mol of polyether PPG800 with 2 mol of diphenylmethane diisocyanate to prepare an elastomer with a terminal hydroxyl polymerization degree of 3, and the reaction equation is: , the prepared elastomer is abbreviated as OH-P-OH; react 2mol elastomer with 1mol maleic anhydride to obtain functional monomer, and the reaction equation is:

[0044] S102. the preparation of water-based modified acrylic resin emulsion, comprising:

[0045] a) Add 45g of water into the reactor, raise the temperature to 80°C, and keep it warm;

[0046] b) dissolving 0.4g of sodium persulfate in 5g of water to obtain an aqueous solution of sodium persulfate, and dividing the aqueous solution of sodium persulfate into 4 parts, and adding 1 part thereof to the reaction kettle;

[0047] c) Mix 23g of functional monomer, 8g of butyl acrylate, and 15.5g of methyl methacrylate evenly f...

Embodiment 3

[0051] Preparation of waterborne inorganic zinc-rich primer S-03

[0052]S101. Preparation of functional monomers: react 3 mol of polyether PPG800 with 2 mol of diphenylmethane diisocyanate to prepare an elastomer with a degree of polymerization of terminal hydroxyl groups of 3. The reaction equation is: , the prepared elastomer is abbreviated as OH-P-OH; react 2mol elastomer with 1mol maleic anhydride to obtain functional monomer, and the reaction equation is:

[0053] S102. the preparation of water-based modified acrylic resin emulsion, comprising:

[0054] a) Add 1g of alkylphenol polyoxyethylene ether and 40g of water into the reactor and stir evenly, raise the temperature to 80°C, and keep it warm;

[0055] b) dissolving 0.5 g of sodium persulfate in 10 g of water to obtain an aqueous solution of sodium persulfate, and dividing the aqueous solution of sodium persulfate into 5 parts, and adding 1 part thereof to the reaction kettle;

[0056] c) Mix 25g of functional m...

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Abstract

The invention discloses waterborne inorganic zinc-rich primer. The waterborne inorganic zinc-rich primer is characterized by being prepared from the following components in parts by weight: 18 to 22 parts of waterborne modified acrylic resin emulsion, 85 to 95 parts of water glass sodium silicate, 155 to 165 parts of zinc powder, and 35 to 45 parts of phosphorus iron powder, wherein the waterborne modified acrylic resin emulsion is prepared from the following components in parts by weight: 22 to 27 parts of functional monomers, 7 to 9 parts of butyl acrylate, 15.5 to 17 parts of methyl methacrylate, 0.4 to 0.6 part of sodium persulfate, 0 to 2 parts of emulsifier, and 45 to 50 parts of water. The waterborne inorganic zinc-rich primer is good in weather resistance; and the application effect is better than that of the traditional solvent-type epoxy resin primer, the construction cost can be effectively decreased, and the long-term maintenance of outdoor equipment is facilitated.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a water-based inorganic zinc-rich primer and a preparation method thereof. Background technique [0002] Steel, aluminum alloy, etc. exposed to air or corrosive liquid for a long time are easily corroded by oxygen or electrolyte solution, resulting in a decrease in structural strength, which seriously affects the appearance and service life. At present, the domestic anti-corrosion coating primers for steel structures are mainly solvent-based epoxy resin primers. Since the epoxy resin contains aromatic ether bonds, the paint film is easily degraded after being irradiated by sunlight (ultraviolet rays). Poor performance, often need to be re-sprayed regularly, high construction costs, and inconvenience to long-term maintenance. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a water-based...

Claims

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Application Information

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IPC IPC(8): C09D1/02C09D151/08C09D5/10C09D7/12C08F283/00C08F220/14C08F220/18
Inventor 韩建国
Owner JIANGSU BANGJIE ANTI CORROSION THERMAL INSULATIONTECH
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