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Water-based inorganic zinc-rich base coat for preventing steel structure from corrosion and preparation method thereof

An inorganic zinc-rich, steel structure technology, applied in anti-corrosion coatings, alkali metal silicate coatings, coatings, etc., can solve problems such as poor adhesion, high brittleness, and difficulty in achieving heavy anti-corrosion, and achieve easy and simple implementation Effect

Inactive Publication Date: 2018-03-30
SHANGHAI RES INST OF BUILDING SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limited anti-corrosion performance of water-based epoxy zinc-rich primers, it is difficult to meet the requirements of heavy-duty anti-corrosion; therefore, water-based inorganic zinc-rich primers with excellent corrosion resistance have become a new favorite in the field of steel structure anti-corrosion; however, the existing Water-based inorganic zinc-rich primer has the disadvantages of high brittleness and poor adhesion, and there are still many problems in its performance

Method used

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  • Water-based inorganic zinc-rich base coat for preventing steel structure from corrosion and preparation method thereof

Examples

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Effect test

Embodiment 1

[0034] A preparation method of a water-based inorganic zinc-rich primer and its application in steel structure anticorrosion, comprising the following steps:

[0035] (1) Stir 70 parts by weight of lithium silicate solution and 30 parts by weight of deionized water at a stirring speed of 1000 rpm for 0.5 hours, then add 0 parts by weight of flexible acrylic emulsion and 0.15 parts by weight of thickener to continue stirring for 0.5 Hours, to obtain the first component of the water-based inorganic zinc-rich primer.

[0036] (2) Part B is composed of pure zinc powder.

[0037] (3) Stir component A and component B of the obtained water-based inorganic zinc-rich primer at a weight ratio of 1:3 for 0.5 hours, then add 0.2 parts by weight of a defoamer for defoaming, and then filter And adjust the viscosity, you can get water-based inorganic zinc-rich primer.

[0038] (4) The water-based inorganic zinc-rich primer obtained above is dried for board making according to HG / T 3668-200...

Embodiment 2

[0040] A preparation method of a water-based inorganic zinc-rich primer and its application in steel structure anticorrosion, comprising the following steps:

[0041] (1) 70 parts by weight of lithium silicate solution and 30 parts by weight of deionized water were stirred for 0.5 hours at a stirring speed of 1000 rpm, and then 10 parts by weight of flexible acrylic emulsion and 0.15 parts by weight of thickener were added successively to continue stirring for 0.5 Hours, to obtain the first component of the water-based inorganic zinc-rich primer.

[0042] (2) Part B is composed of pure zinc powder.

[0043] (3) Stir component A and component B of the obtained water-based inorganic zinc-rich primer at a weight ratio of 1:3 for 0.5 hours, then add 0.2 parts by weight of a defoamer for defoaming, and then filter And adjust the viscosity, you can get water-based inorganic zinc-rich primer.

[0044] (4) The water-based inorganic zinc-rich primer obtained above is dried for board ...

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Abstract

The invention discloses a water-based inorganic zinc-rich base coat for preventing a steel structure from corrosion and a preparation method thereof. The preparation method for the water-based inorganic zinc-rich base coat comprises the steps of first, preparing raw materials: stirring 50-80 parts by weight of lithium silicate solution and 10-40 parts by weight of deionized water at stirring speedof 800-1500rpm, then adding 10-50 parts by weight of flexible acrylic emulsion and 0.05-0.2 part by weight of thickening agent in sequence and keeping stirring, so as to obtain a component A for later use; and second, mixing and stirring the obtained component A and a component B according to a weight ratio of 1:(1.5-3), adding 0.1-0.3 part by weight of foam suppressor to eliminate foam, then filtering and adjusting viscosity, so as to obtain the water-based inorganic zinc-rich base coat, wherein the component B is pure zinc powder or a mixture of zinc powder and zinc-substitute powder.

Description

technical field [0001] The invention relates to the technical field of anticorrosion coatings for steel structures, in particular to a water-based inorganic zinc-rich primer for anticorrosion of steel structures and a preparation method thereof. Background technique [0002] At present, the emission of volatile organic compounds (VOC) is becoming increasingly strict around the world, causing solvent-based coatings to be greatly restricted in many fields. Among them, in the field of steel structure anticorrosion, waterborne epoxy zinc-rich primers and waterborne inorganic zinc-rich primers have received unprecedented attention from the coatings industry. However, due to the limited anticorrosion performance of water-based epoxy zinc-rich primers, it is difficult to meet the requirements of heavy-duty corrosion protection; therefore, water-based inorganic zinc-rich primers with excellent corrosion resistance have become a new favorite in the field of steel structure corrosion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/04C09D5/10C09D7/65
CPCC09D1/04C09D5/106
Inventor 吴光雨夏文丽杨霞宋莹莹杨晓晨
Owner SHANGHAI RES INST OF BUILDING SCI CO LTD