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Synthesis method of red-mud-based high-temperature-resistant inorganic coating

A technology of high temperature resistant coatings and synthesis methods, applied in the direction of fireproof coatings, coatings, etc., can solve the problems of poor water resistance, high price, strict requirements for substrate surface treatment, etc., and achieve low cost, easy operation, and obvious price advantages Effect

Inactive Publication Date: 2017-06-30
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the high temperature-resistant coatings in the prior art, which are mainly organic coatings, and the high temperature resistance is mainly concentrated at 200-300 °C, and rarely exceeds 500 °C; and when the organic coating is in a high-temperature state, certain substances in the coating film decompose and release toxic substances. In addition, the existing inorganic high-temperature-resistant paint fillers are expensive, have strict requirements on the surface treatment of the substrate, and have poor water resistance. A red mud-based anti-corrosion The synthesis method of high-temperature paint aims at obtaining a kind of high-temperature-resistant, green and environment-friendly inorganic paint

Method used

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  • Synthesis method of red-mud-based high-temperature-resistant inorganic coating
  • Synthesis method of red-mud-based high-temperature-resistant inorganic coating
  • Synthesis method of red-mud-based high-temperature-resistant inorganic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The red mud is calcined at 800°C for 2 hours, ball milled and passed through a 200-mesh sieve after calcination, and then calcined according to the mass ratio of red mud: phosphoric acid: deionized water: metakaolin: defoamer = 5:5:2:0.5:0.5 Add phosphoric acid, deionized water, metakaolin and defoamer in an appropriate amount, and stir evenly to obtain the product.

[0017] Taking adhesion as the main inspection index, the adhesion performance is tested according to the cross-cut method of the national standard GB / T9286-1998, and the adhesion performance reaches level 1.

Embodiment 2

[0019] Red mud is first calcined at 700°C for 2 hours, after calcining, ball milled and passed through a 180-mesh sieve, and then calcined according to the mass ratio of red mud: phosphoric acid: deionized water: metakaolin: defoamer = 5:5:2:1:0.5 Add phosphoric acid, deionized water, metakaolin and defoamer in an appropriate amount, and stir evenly to obtain the product.

[0020] Taking adhesion as the main inspection index, the adhesion performance is tested according to the cross-cut method of the national standard GB / T9286-1998, and the adhesion performance reaches level 1.

Embodiment 3

[0022] Red mud is first calcined at 900°C for 1 hour, ball milled and passed through a 220-mesh sieve after calcination, and then calcined according to the mass ratio of red mud: phosphoric acid: deionized water: metakaolin: defoamer = 5:5:2:1:0.5 Add phosphoric acid, deionized water, metakaolin and defoamer in an appropriate amount, and stir evenly to obtain the product.

[0023] Taking adhesion as the main inspection index, the adhesion performance is tested according to the cross-cut method of the national standard GB / T9286-1998, and the adhesion performance reaches level 1.

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Abstract

The invention discloses a synthesis method of a red-mud-based high-temperature-resistant inorganic coating. Calcined red mud is sieved after being subjected to ball milling, the calcined red mud can react more completely through ball milling, phosphoric acid, water and a defoaming agent are added, and the product can be obtained after the mixture is stirred uniformly. Waste residue red mud produced in the aluminum oxide industry and industrial phosphoric acid are mainly adopted as raw materials and are non-toxic and harmless during reaction, the product has good water resistance and low-concentration acid and base corrosion resistance and can resist the high temperature of at least 1,100 DEG C, the red mud has very rich source, the environment is protected, waste is recycled, the cost is low, and the coating has the obvious price advantage as compared with other coatings; further, the synthesis process of the costing is simple and easy to operate, large-scale industrial production can be realized, and no secondary pollution is produced in production.

Description

technical field [0001] The invention relates to a method for synthesizing a high-temperature-resistant inorganic coating, in particular to a method for synthesizing a red mud-based high-temperature-resistant inorganic coating. Background technique [0002] With the rapid development of modern society, science and technology are becoming more and more advanced, the application and development fields of coatings have been expanded, and the importance of inorganic coatings has gradually become popular among the people. The promotion of environmental protection and sustainable development has also made the application fields of coatings more extensive. . The development of coatings to harmless and environmentally friendly inorganic water-based coatings is unstoppable, especially after the implementation of national policies on the coatings industry, the application of inorganic water-based coatings has gradually expanded its position in the market. Inorganic water-based coating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/12
CPCC09D1/00C09D5/18C09D7/61
Inventor 郭昌明廖建泉陈鹏吴君崔学民
Owner GUANGXI UNIV
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