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Preparation method of modified coal ash and application of modified coal ash in metal powder coating

A metal powder and coal ash technology, which is applied in powder coatings, polyester coatings, chemical instruments and methods, etc., can solve the problems of weak antibacterial properties and high production costs, and achieve good metallic luster, high powder coating rate, and low production costs. Reduced effect

Inactive Publication Date: 2021-07-09
广西福宝信科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a metal powder coating and its preparation method to solve the problems of weak antibacterial property and high preparation cost in the existing metal powder coating

Method used

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  • Preparation method of modified coal ash and application of modified coal ash in metal powder coating
  • Preparation method of modified coal ash and application of modified coal ash in metal powder coating
  • Preparation method of modified coal ash and application of modified coal ash in metal powder coating

Examples

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Effect test

preparation example Construction

[0053] The preparation method of described modified coal ash comprises the following steps:

[0054] Step 1: pickling the coal ash with hydrochloric acid with a mass concentration of 25.2%-30% until the pH value of the coal ash is 8.6-9.0, and then washing the acid-washed coal ash with water. After washing, the pH value of the coal ash is tested to be 7.2-7.5 After pressure filtration, it is processed into clean coal ash, and the clean coal ash is dried at a temperature of 70-76°C until the water content is ≤2.3%;

[0055] Step 2: Grinding the clean coal ash obtained in step 1, and sieving to obtain clean coal ash larger than 400 meshes;

[0056] Step 3: Add the first composite modifier to the clean coal ash obtained in step 2, and the first composite modifier consists of coconut oil fatty acid diacetamide, hexapylglycerol monostearate, N-oleoyl -N-Methyl taurine sodium composition, the addition of the first composite modifier is 4.2%-4.8% of the clean coal ash quality, the c...

Embodiment 1

[0065] A metal powder coating, comprising the following raw materials in mass percentage: 31.5% of modified coal ash, 49.2% of polyester resin, 5.7% of curing agent, 1.4% of leveling agent, 0.6% of benzoin, 3% of wax powder, and 1% of brightening agent %, metallic pigments 7.6%.

[0066] The polyester resin is prepared by the method of Example 2 disclosed in the Chinese patent document "Polyester resin for indoor powder coatings and its preparation method (patent number: ZL201610735896.7)".

[0067] The curing agent is TGIC curing agent.

[0068] The leveling agent is leveling agent GLP588.

[0069] The brightener is brightener LD-608.

[0070] The metallic pigments include pearlescent pigments and copper-gold powders, wherein the pearlescent pigments are 5.2% and the copper-gold powders are 2.4%.

[0071] The preparation method of described modified coal ash comprises the following steps:

[0072]Step 1: Pickling the coal ash with hydrochloric acid with a mass concentrati...

Embodiment 2

[0087] A metal powder coating, comprising the following raw materials in mass percentage: 34.2% of modified coal ash, 47.6% of polyester resin, 5.6% of curing agent, 1.2% of leveling agent, 0.5% of benzoin, 2.7% of wax powder, and 0.9% of brightening agent %, metallic pigments 7.3%.

[0088] The polyester resin is prepared by the method of Example 2 disclosed in the Chinese patent document "Polyester resin for indoor powder coatings and its preparation method (patent number: ZL201610735896.7)".

[0089] The curing agent is TGIC curing agent.

[0090] The leveling agent is leveling agent GLP588.

[0091] The brightener is brightener LD-608.

[0092] The metallic pigments include pearlescent pigments and silver-aluminum powders, wherein the pearlescent pigments are 2.5% and the silver-aluminum powders are 4.8%.

[0093] The preparation method of described modified coal ash comprises the following steps:

[0094] Step 1: Pickling the coal ash with hydrochloric acid with a mas...

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Abstract

The invention discloses a preparation method of modified coal ash, wherein the preparation method comprises the following steps: clean coal ash is ground into powder, then a first composite modifier and a second composite modifier are respectively used for modification to prepare the modified coal ash, wherein the modified coal ash can be applied to a metal powder coating, and the metal powder coating comprises the following raw materials in percentage by mass: 30.4%-36.5% of modified coal ash, 46.2%-51.4% of polyester resin, 5.2%-6.3% of a curing agent, 1%-1.5% of a flatting agent, 0.4%-0.7% of benzoin, 2.3%-4.4% of wax powder, 0.8%-1.2% of a brightener and 6.5%-10.2% of a metallic pigment. The prepared metal powder coating is excellent in performance and suitable for spraying in the fields of door industry, furniture, instruments and meters and the like.

Description

【Technical field】 [0001] The invention belongs to the technical field of powder coating preparation, and in particular relates to a metal powder coating and a preparation method thereof. 【Background technique】 [0002] With the improvement of people's living standards, domestic waste has become a stumbling block that affects people's quality of life, especially furnace slag and ash, which make people daunted. Coal ash has become one of the pollution sources that pollute the environment. At the same time, factories and mines will The discarded limestone ballast, coal ash ballast, etc. are all discharged into the environment as waste, piled up like a mountain, seriously polluting the environment, and it is also quite expensive, time-consuming and laborious to dispose of it. [0003] The main component of coal ash is SiO 2 、Al 2 o 3 , Fe 3 o 4 , FeO, and a small amount of CaO, MgO, etc. Therefore, the surface of coal ash contains a large amount of hydroxyl groups. If the u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/10C09C3/08C09C3/06C09C3/04C09D7/62C09D167/00C09D5/03
CPCC09C1/405C09C1/407C09C3/006C09C3/041C09C3/043C09C3/06C09C3/08C09C3/10C09D5/033C09D167/00C09D7/62C09D7/70C08K9/04C08K9/08C08K7/26
Inventor 王雄
Owner 广西福宝信科技有限公司
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