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Heat-resisting anti-burning sticking coating and preparation method

An anti-sticking and high-temperature-resistant technology, which is applied in coatings and other directions, can solve the problems of preventing steel slag burning and other problems, achieve good heat insulation performance, good adhesion, and solve the effect of preventing steel slag burning and sticking

Inactive Publication Date: 2012-09-26
TIANCHANG YINHU PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention provides a self-drying high-temperature anti-sticking coating at room temperature for the steelmaking oxygen blowing pipe of my country's iron and steel industry to solve the problem of preventing steel slag burning and sticking on the outer surface of the oxygen blowing pipe of the steelmaking furnace

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]First, take 10kg of ethyl silicate and put it into the reaction kettle for stirring, slowly add 16kg of aqueous solution of fluorosilicic acid, and react at 25°C for 5 hours to form inorganic film-forming substance A; add 2kg of silicon-acrylic emulsion, 7kg of potassium titanate whiskers Mix 10kg of graphite, 11kg of molybdenum disulfide, 10kg of cerium fluoride, and 2kg of fumed silica to form component B; mix inorganic film-forming material A, component B, 13kg of phosphoric acid, and an appropriate amount of water, and stir evenly to obtain a high-temperature resistant Anti-stick coating.

[0036] The content of silicon dioxide in the ethyl silicate is 20%.

[0037] The solid content of the silicon-acrylic emulsion is 65%, the pH value is 6.2, and the Brookfield viscosity is 200 cps.

[0038] The particle size of graphite and molybdenum disulfide is 4 μm.

[0039] The specific surface area of ​​fumed silica is 215m 2 / g.

Embodiment 2

[0041] First, take 50kg of ethyl silicate and put it into the reaction kettle for stirring, slowly add 3kg of hydrofluorosilicic acid aqueous solution, and react at 80°C for 1 hour to form inorganic film-forming substance A; Mix 25kg of graphite, 2kg of molybdenum disulfide, 1kg of cerium fluoride, and 7kg of fumed silica to form component B; mix inorganic film-forming material A, component B, 3kg of phosphoric acid, and an appropriate amount of water, and stir evenly to obtain a high-temperature resistant Anti-stick coating.

[0042] The content of silicon dioxide in the ethyl silicate is 45%.

[0043] The solid content of the silicon-acrylic emulsion is 30%, the pH value is 9.3, and the Brookfield viscosity is 1000 cps.

[0044] The particle size of graphite and molybdenum disulfide is 3 μm.

[0045] The specific surface area of ​​fumed silica is 170m 2 / g.

Embodiment 3

[0047] First, take 18kg of ethyl silicate and put it into the reaction kettle for stirring, slowly add 11kg of hydrofluorosilicic acid aqueous solution, and react at 45°C for 3 hours to form inorganic film-forming substance A; mix 16kg of silicon-acrylic emulsion, 6kg of antimony trioxide, Potassium titanate whiskers, 13kg of graphite, 8kg of molybdenum disulfide, 2kg of cerium fluoride, and 3kg of fumed silica are mixed uniformly to form component B; the inorganic film-forming material A, component B, 9kg of phosphoric acid, and an appropriate amount of water are mixed, Stir evenly to obtain a high temperature resistant anti-sticking coating.

[0048] The content of silicon dioxide in the ethyl silicate is 25%.

[0049] The solid content of the silicon-acrylic emulsion is 60%, the pH value is 7, and the Brookfield viscosity is 800 cps.

[0050] The particle size of graphite and molybdenum disulfide is 1.5 μm.

[0051] The specific surface area of ​​fumed silica is 150m 2 / ...

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Abstract

The invention relates to a heat-resisting anti-burning sticking coating and a preparation method. The heat-resisting anti-burning sticking coating is prepared by using ethyl silicate, fluosilicic acid, silicone acrylic emulsion, phosphoric acid, potassium titanate whisker, graphite, molybdenum disulfide, cerium fluoride and gas-phase silicon dioxide. The preparation method comprises the following steps of: firstly, taking ethyl silicate and placing into a reaction kettle, stirring, and then slowly adding an aqueous solution of fluosilicic acid, thereby forming an inorganic film forming matter A; uniformly mixing the silicone acrylic emulsion, potassium titanate whisker, graphite, molybdenum disulfide, cerium fluoride and gas-phase silicon dioxide, thereby forming a component B; and adding a defined amount of water for mixing the inorganic film forming matter A, the component B and phosphoric acid, and then stirring uniformly, thereby obtaining the heat-resisting anti-burning sticking coating. A heat-insulating coating provided by the invention has stronger heat-insulating and cold-insulating functions; the highest heat-insulating temperature can reach about 1300 DEG C; the lowest cold-insulating temperature can reach -60 DEG C; the heat-resisting anti-burning sticking coating completely meets the heat-insulating demands of various heating equipment and various low-temperature facilities; and the properties in other aspects are excellent.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation materials, and in particular relates to a high-temperature-resistant anti-sticking coating used for high-temperature kilns or other special-shaped and rotating thermal equipment. Background technique [0002] At present, there are many kinds of thermal insulation coatings used in industry at home and abroad, but in the thermal insulation of high-temperature furnaces or other special-shaped, rotating and other thermal equipment, the existing thermal insulation coatings are not very ideal in terms of technical performance and use effect , such as: some have high thermal conductivity, poor high temperature resistance, thick insulation coating, many materials, and high cost; some insulation materials are not strong enough, and they are easy to crack after construction; It is less than ideal to adapt to the application requirements of the kiln, thus affecting the thermal efficiency of the eq...

Claims

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Application Information

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IPC IPC(8): C09D183/02C09D133/04C08G77/02C09D7/12
Inventor 管伟
Owner TIANCHANG YINHU PAINT