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A kind of fly ash coated with nickel and its preparation method and application

A fly ash and coating technology, applied in chemical instruments and methods, conductive coatings, coatings, etc., can solve the problems of inability to enhance the conductivity of zinc powder, poor impact resistance, low adhesion, etc., and achieve high economic value and Environmental significance, lower production cost, smooth cutting edge effect

Active Publication Date: 2021-09-07
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its composite powder is used in soft magnetic materials, and the nickel ferrite in it cannot enhance the conductivity between zinc powders, nor can it improve its anti-corrosion performance
[0009] In the current prior art, the problems of flexibility, poor impact resistance and low adhesion of inorganic zinc-rich coatings have not been effectively solved, and the required materials are expensive and the cost is high. From the comprehensive performance, economic benefits and From the perspective of sustainable development, there are different degrees of defects. Therefore, a new preparation process is urgently needed to improve the deficiencies and defects in the existing technology, and it can also bring certain economic benefits while improving the overall performance of the coating.

Method used

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  • A kind of fly ash coated with nickel and its preparation method and application
  • A kind of fly ash coated with nickel and its preparation method and application
  • A kind of fly ash coated with nickel and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] This embodiment provides a nickel-coated fly ash and a method for preparing an inorganic zinc-rich coating using the same. The method includes: first preparing nickel-coated fly ash; then, coating the nickel-coated fly ash Ash and zinc powder are mixed to prepare anti-rust filler; finally, a base material is prepared, and the base material is mixed with anti-rust filler to prepare an inorganic zinc-rich coating added with nickel-coated fly ash. The specific operation steps are as follows:

[0077] (1) Prepare the fly ash coated with nickel:

[0078] Mix the nickel sulfate solution with a concentration of 80g / L and the ammonia solution with a concentration of 14mol / L in a mass ratio of 17:1, then add fly ash and heat up to 70°C, and stir mechanically for 1h, wherein the nickel sulfate solution and The ratio of the total mass of the ammonia solution to the mass of the fly ash is 10:1; then dropwise add the nickel reducing agent hydrazine hydrate with a mass fraction of 3...

Embodiment 2

[0087] This embodiment provides a nickel-coated fly ash and a method for preparing an inorganic zinc-rich coating using the same. The method includes: first preparing nickel-coated fly ash; then, coating the nickel-coated fly ash Ash and zinc powder are mixed to prepare anti-rust filler; finally, a base material is prepared, and the base material is mixed with anti-rust filler to prepare an inorganic zinc-rich coating added with nickel-coated fly ash. The specific operation steps are as follows:

[0088] (1) Prepare the fly ash coated with nickel:

[0089] Mix the nickel chloride solution with a concentration of 80g / L and the ammonia solution with a concentration of 12mol / L at a mass ratio of 14:1, then add fly ash and heat up to 80°C, and stir magnetically for 2 hours, wherein nickel chloride The ratio of the total mass of the solution and the ammonia solution to the mass of the fly ash is 15:1; the nickel reducing agent hydrazine hydrate with a mass fraction of 2% is added ...

Embodiment 3

[0098] This embodiment provides a method of adding nickel-coated fly ash and using it to prepare an inorganic zinc-rich coating, the method comprising: first preparing nickel-coated fly ash; then, coating the nickel-coated powder Coal ash was mixed with zinc powder to prepare anti-rust filler; finally, a base material was prepared, and the base material was mixed with anti-rust filler to prepare an inorganic zinc-rich coating added with nickel-coated fly ash. The specific operation steps are as follows:

[0099] (1) Prepare the fly ash coated with nickel:

[0100] Mix the nickel sulfamate solution with a concentration of 80g / L and the ammonia solution with a concentration of 10mol / L at a mass ratio of 10:1, then add fly ash and heat up to 70°C, and ultrasonically disperse for 1.5h. Among them, amino The ratio of the total mass of nickel sulfonate solution and ammonia solution to the mass of fly ash is 10:1; then add dropwise the nickel reducing agent sodium borohydride with a...

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Abstract

The invention provides a nickel-coated fly ash and its preparation method and application. The inorganic zinc-rich coating is mainly composed of a base material and an anti-rust filler mixed in a mass ratio of 1:(1-3.5), wherein, The anti-rust filler includes zinc powder and nickel-coated fly ash, wherein the mass proportion of the nickel-coated fly ash is 0.5% to 15%. In the present invention, by adding fly ash coated with metallic nickel to the inorganic zinc-rich paint, the conductivity between the zinc powder particles is improved, the utilization rate of the zinc powder is improved, and the silicic acid in the base material is also improved to a certain extent. The modulus of salt shortens the surface drying time of the coating and improves the comprehensive performance of the coating such as adhesion, flexibility and impact resistance.

Description

technical field [0001] The invention belongs to the field of paint chemical industry, relates to the field of resource utilization of fly ash, in particular to a nickel-coated fly ash and its preparation method and application. Background technique [0002] Steel is used more and more in modern buildings. Due to its simple manufacturing process and excellent mechanical properties, it is very suitable for modern high-rise buildings with large spans. However, with the extensive use of steel, corrosion problems follow. The annual loss due to corrosion accounts for about 5% of the global GDP, which is more than the total losses caused by earthquake disasters, wind disasters and fires. In order to reduce this economic loss, a cost-effective anti-corrosion method is to apply anti-corrosion coatings. By applying anti-rust pigments on the metal surface, a dense anti-corrosion coating can be formed on the metal surface to strengthen the physical anti-corrosion effect. Anti-corrosion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/04C09D5/24C09D5/10C09D7/61C09D7/63C09D7/65C09C1/00C09C3/06
CPCC09C1/00C09C3/063C09D1/04C09D5/106C09D5/24C09D7/61C09D7/63C09D7/65
Inventor 马淑花成立鸿王晓辉
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI