Waterborne inorganic zinc-rich coating capable of realizing long-term corrosion protection based on single coating layer

An inorganic zinc-rich coating and water-based technology, applied in anti-corrosion coatings, fire-retardant coatings, coatings, etc., can solve the problems of phase separation and organic polymer aging easily, affecting the anti-corrosion performance of the coating film, and high requirements for substrate treatment. Long-term outdoor weather resistance, excellent salt spray resistance and corrosion resistance, and the effect of improving crosslinking density

Inactive Publication Date: 2017-06-23
合肥介观科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The water-based inorganic zinc-rich coatings that appear on the market are roughly divided into two categories: one type uses pure inorganic silicate solution as the binder, this type of coating has good anti-corrosion performance, but has high requirements for the treatment of the base material and strict construction requirements. Causes the coating to be weakly bonded and peeled off, and the solution has poor stability and is prone to gelation; another type of binder uses a mixture of inorganic silicate solution and organic polymer latex. Although this type of coating improves the coating Some properties of the film in the early stage, but affect the anti-corrosion performance of the film in the later stage, it can only be used as a primer, mainly due to phase separation and the aging of organic polymers

Method used

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  • Waterborne inorganic zinc-rich coating capable of realizing long-term corrosion protection based on single coating layer
  • Waterborne inorganic zinc-rich coating capable of realizing long-term corrosion protection based on single coating layer
  • Waterborne inorganic zinc-rich coating capable of realizing long-term corrosion protection based on single coating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh respectively 150 kilograms of potassium silicate solution and lithium silicate solution with a modulus of 4.0 and a solid content of 26%, and after being uniformly dispersed under stirring, slowly add 4 kilograms of 3-aminopropyltriethoxysilane. Add 18 kg of sodium oligoacrylate aqueous solution with a mass concentration of 5% under medium-speed stirring, then add 15 kg of boric acid aqueous solution with a solid content of 1.5% under medium-speed stirring, and finally add 1.2 kg of BYK-190 and 2.5 kg of cellulose , 0.5 kg of BYK-348, 1.0 kg of BYK-019, after the reaction is completed, the liquid A component is obtained.

[0029] Mix 92 kg of 800-mesh active zinc powder with 2 kg of nano-silica fume powder, 2 kg of nano-aluminum phosphate, 2 kg of nano-zinc oxide, and 2 kg of nano-silicon oxide to obtain component B of the powder.

[0030] Mix liquid component A and powder component B uniformly at a mass ratio of 1:2.5 to obtain the required water-based inorganic ...

Embodiment 2

[0034] Weigh 100 kg of potassium silicate solution, 100 kg of sodium silicate solution and 100 kg of lithium silicate solution with a modulus of 3.8 and a solid content of 30%, and disperse evenly under stirring, slowly add 5 kg of methyl trimethoxy base silane, add 20 kg of oligoacrylamide aqueous solution with a mass concentration of 3% under medium-speed stirring, then add 20 kg of borax aqueous solution with a solid content of 1% under medium-speed stirring, and finally add 1.2 kg BYK- 191. 1.0 kg of BYK-020, 1.0 kg of titanate coupling agent, 2.5 kg of modified bentonite, and 0.8 kg of BYK-349. After the reaction is completed, the liquid component A is obtained.

[0035] Mix 92.5 kg of 500-mesh active zinc powder with 2 kg of nano-silica fume powder, 2.5 kg of nano-zinc oxide, 2.5 kg of nano-cerium oxide, and 0.5 kg of nano-calcium carbonate to obtain component B of the powder.

[0036] Mix liquid component A and powder component B uniformly at a mass ratio of 1:3.0 to ob...

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Abstract

The invention discloses a water-based inorganic zinc-rich coating capable of long-term anti-corrosion with a single coating, which is uniformly mixed with a liquid component A and a powder component B at a mass ratio of 1:2-4; wherein The liquid component A is composed of high modulus silicate mixed solution, reinforcing agent aqueous solution, modifier aqueous solution, solution stabilizer and water-based additive; the powder component B is composed of zinc powder and nano-mixed additives. to make. The water-based inorganic zinc-rich coating of the present invention can provide long-term anti-corrosion function for various metal components with only one coat and no need for topcoat. , Aging resistance, solvent resistance.

Description

technical field [0001] The invention relates to the field of water-based anticorrosion coatings, in particular to a water-based inorganic zinc-rich coating. Background technique [0002] According to statistics, the annual economic losses caused by corrosion in the world account for about 3% of the total output value of the national economy. Practice has proved that anti-corrosion coating is the most effective, economical and widely used anti-corrosion method. At present, most of the anti-corrosion coatings market is organic solvent-based oil-based coatings, which not only have high VOC emissions, pollute the environment, but are also flammable and explosive. Although water-based anti-corrosion coatings have always been a topic of concern in the coatings industry, due to technical reasons, they are still not widely used in practical applications. [0003] Water-based inorganic zinc-rich heavy-duty anti-corrosion coating has the following characteristics: the substrate is w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/10C09D7/12
CPCC09D1/00C09D5/106C09D5/18C09D7/61C09D7/62C09D7/63C09D7/65
Inventor 桂宙陈仙辉
Owner 合肥介观科技有限公司
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