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Aqueous on-rust inorganic zinc-enriched coating and preparation method thereof

An inorganic zinc-rich coating and rust-bearing technology, applied in anti-corrosion coatings, alkali metal silicate coatings, etc., to achieve the effect of ensuring protection performance, good temperature resistance and fast self-drying speed

Inactive Publication Date: 2011-07-20
TIANJIN FUTESI TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no water-based inorganic zinc-rich coating that can be constructed under the condition of steel with low surface treatment. Therefore, it is necessary to prepare a water-based inorganic zinc-rich coating with rust to overcome the above defects.

Method used

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  • Aqueous on-rust inorganic zinc-enriched coating and preparation method thereof
  • Aqueous on-rust inorganic zinc-enriched coating and preparation method thereof
  • Aqueous on-rust inorganic zinc-enriched coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 10kg of lithium hydroxide for industrial use into 450kg of potassium silicate solution with a modulus of 3.2 and 350kg of deionized water under stirring, raise the temperature to 40-50°C, add 100kg of silica sol dropwise, keep warm for 30 minutes after completion, and then gradually add Petroleum sulfonate 10kg, acrylic acid emulsion 80kg, cooled and packed separately.

[0026] Mixing conditions: base material: powder = 1:2.5, slowly pour 500-600 mesh zinc powder into the base material, and keep stirring at the same time, fully mix the zinc powder in a suspended state, and sieve it with 60-100 mesh before spraying net filter.

[0027] Surface treatment: remove oil stains on the steel surface first, remove iron scale and rust by manual grinding, and use compressed air to completely remove impurities such as gravel and dust before brushing.

[0028] Construction Conditions:

[0029] (1) Apply by spraying or brushing, and the tools are clean and oil-free.

[0030] (...

Embodiment 2

[0035] Add 25kg of lithium hydroxide for industrial use into 550kg of potassium silicate solution with a modulus of 3.4 and 300kg of deionized water under stirring, raise the temperature to 40-50°C, add 40kg of silica sol dropwise, keep warm for 30 minutes after completion, and then gradually add Petroleum sulfonate 20kg, acrylic acid emulsion 65kg, cooled and packed separately.

[0036] Mixing conditions: base material: powder = 1:3, slowly pour 500-600 mesh zinc powder into the base material, and keep stirring at the same time, fully mix the zinc powder in a suspended state, and use a 60-100 mesh sieve before spraying net filter.

[0037] Construction Conditions:

[0038] (1) Apply by spraying or brushing, and the tools are clean and oil-free.

[0039] (2) The construction temperature is 5-50°C, and the relative humidity is below 85% (keep ventilation).

[0040] Comparative Experiment:

[0041] Take the 1# sample plate as 1mm thick 235 steel plate, polish it without rust...

Embodiment 3

[0047] Add 15kg of lithium hydroxide for industrial use into 600kg of potassium silicate solution with a modulus of 3.8 and 240kg of deionized water under stirring, raise the temperature to 40-50°C, add 60kg of silica sol dropwise, keep warm for 30 minutes after completion, and then gradually add Petroleum sulfonate 30kg, acrylic acid emulsion 55kg, cooled and packed separately.

[0048] Mixing conditions: base material: powder = 1:2.5, slowly pour 500-600 mesh zinc powder into the base material, and keep stirring at the same time, fully mix the zinc powder in a suspended state, and sieve it with 60-100 mesh before spraying net filter.

[0049] Construction Conditions:

[0050] (1) Apply by spraying or brushing, and the tools are clean and oil-free.

[0051] (2) The construction temperature is 5-50°C, and the relative humidity is below 85% (keep ventilation).

[0052] Comparative Experiment:

[0053] Take the 1# sample plate as 1mm thick 235 steel plate, polish it with rus...

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Abstract

The invention provides aqueous on-rust inorganic zinc-enriched coating, which comprises components A and B, wherein the component A serving as a base material comprises 1 to 2.5 percent of lithium hydroxide, 45 to 60 percent of solution of potassium silicate, 15 to 35 percent of deionized water, 4 to 10 percent of silica solution, 1 to 3 percent of assistant and 5 to 10 percent of acrylic emulsion; and the component B is zinc powder. In the invention, the drawback that the aqueous inorganic zinc-enriched coating in the prior art cannot be coated under the condition of low surface treatment ofsteel in the prior art is overcome, and the product provided by the invention can be coated under the condition of low surface treatment, namely the condition that the surface of the steel is rusted to form compact coating, and has the advantages of water resistance, temperature resistance, high self-drying speed, long-lasting anti-corrosion performance, and the like.

Description

technical field [0001] The invention relates to a water-based rusty inorganic zinc-rich paint and a preparation method thereof. Background technique [0002] As an important part of steel anti-corrosion, zinc-rich coatings use the strong activity of zinc powder for electrochemical cathodic protection to prevent steel from rusting. Zinc-rich coatings have excellent rust resistance and durability, and are widely used in petrochemical equipment, bridges, shipbuilding and other industries. Zinc-rich coatings are generally divided into two categories: organic and inorganic. Organic zinc-rich coatings mainly use epoxy resin as the base material, and water-based inorganic zinc-rich coatings are a two-component high-performance inorganic coating made of sodium silicate, potassium, and lithium aqueous solutions as base materials and compounded with zinc powder. coating. [0003] The development of water-based inorganic zinc-rich coatings has gone through more than 60 years of hist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/04C09D5/10
Inventor 程怀文王建旗
Owner TIANJIN FUTESI TECH DEV
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