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High-temperature resistant paint for hot-blast stoves and preparation method of high-temperature resistant paint

A technology for high temperature resistant coatings and hot blast stoves, which is applied in the direction of anti-corrosion coatings, fireproof coatings, coatings, etc., and can solve problems such as shedding, affecting the service life of hot blast stoves, and cracking

Inactive Publication Date: 2016-12-07
WUHU CHANGQI FURNACE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On this basis, the coating of the hot blast stove tends to fall off and crack, which greatly affects the service life of the hot blast stove

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] The invention provides a method for preparing a high temperature resistant coating for a hot blast stove, comprising:

[0014] 1) Soaking river mud in acid solution, then filtering to get filter cake to obtain modified river mud;

[0015] 2) Disperse silica gel, sodium zirconate, rare earth oxide and modified river mud in an organic solvent under ultrasonic conditions, and then filter the filter cake to obtain the activated product;

[0016] 3) Contact reaction of organosilicon, acrylonitrile-butadiene-styrene copolymer, maleic anhydride, organic solvent, carbon fiber, diatomaceous earth, cyclodextrin and activator under high pressure and airtight conditions to obtain High temperature resistant coatings for hot blast stoves.

[0017] In step 1) of the present invention, the specifications of the filter paper used for filtering can be selected in a wide range, but in order to improve the high temperature resistance and corrosion resistance of the high temperature resist...

Embodiment 1

[0030] 1) Soak the river mud in an acid solution with a pH of 4 (the weight ratio of the river mud to the acid solution is 100:400), and then filter through filter paper with a pore size of 40 μm to obtain a modified river mud;

[0031] 2) Mix silica gel, sodium zirconate, rare earth oxide (cerium oxide), modified river mud and organic solvent (acetophenone) in a weight ratio of 100:15:25:47:550, and heat Disperse for 7 hours at a frequency of 50 MHz, then filter the filter cake to obtain the activated product;

[0032] 3) Silicone (methyltriethoxysilane), acrylonitrile-butadiene-styrene copolymer, maleic anhydride, organic solvent (cyclohexanone), carbon fiber, diatomaceous earth, cyclodextrin and activated The materials were mixed according to the weight ratio of 100:40:60:300:8:29:10:25, and the contact reaction was carried out at 80°C, 1.8MPa and airtight conditions for 8 hours to prepare the high temperature resistant coating A1 for hot blast stove .

Embodiment 2

[0034] 1) Soak the river mud in an acid solution with a pH of 3 (the weight ratio of the river mud to the acid solution is 100:300), and then filter through a filter paper with a pore size of 30 μm to obtain a filter cake to obtain a modified river mud;

[0035] 2) Mix silica gel, sodium zirconate, rare earth oxide (praseodymium oxide), modified river mud and organic solvent (acetophenone) in a weight ratio of 100:11:21:40:400, and heat the Disperse for 5h at a frequency of 40MHz, then filter the filter cake to obtain the activated product;

[0036] 3) Silicone (dimethyldiethoxysilane), acrylonitrile-butadiene-styrene copolymer, maleic anhydride, organic solvent (tert-amyl alcohol), carbon fiber, diatomaceous earth, cyclodextrin and The activators are mixed according to the weight ratio of 100:35:55:250:5:23:7:19, and the contact reaction is carried out at 75°C, 1.5MPa and airtight conditions for 6 hours to prepare a high temperature resistant coating for hot blast stoves A2....

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Abstract

The invention discloses high-temperature resistant paint for hot-blast stoves and a preparation method of the high-temperature resistant paint. The preparation method includes 1), soaking river mud in acid liquor, and picking filter cakes after filtration to obtain the modified river mud; 2), dispersing silica gel, sodium zirconate, rare earth oxide and the modified river mud in organic solvent ultrasonically, and picking filter cakes after filtration to obtain an activator; 3), allowing contact reaction among organosilicone, acrylonitrile-butadiene-styrol copolymers, maleic anhydride, organic solvent, carbon fibers, kieselguhr, cyclodextrin and the activator under a high-pressure closed condition to obtain the high-temperature resistant paint for the hot-blast stoves. The high-temperature resistant paint prepared according to the method has excellent high-temperature and corrosion resistance performance, so that service life of the hot-blast stoves can be prolonged.

Description

technical field [0001] The invention relates to a high-temperature-resistant coating, in particular to a high-temperature-resistant coating for a hot blast stove and a preparation method thereof. Background technique [0002] As a thermal power mechanical hot blast stove, it began to be widely used in my country in the late 1970s, and has become a replacement product for electric heat sources and traditional steam power heat sources in many industries. The most basic working principle of the hot blast stove is to pass cold air into the interlayer of the furnace to take the heat out of the interlayer to form hot air, and then heat the object through the hot air. [0003] At present, the main structure of the hot blast stove is all metal products. In order to protect the main structure and prevent it from being corroded, it is often necessary to brush the inner and outer surfaces of the main structure with a coating. Since coal products are burned in the combustion chamber of...

Claims

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Application Information

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IPC IPC(8): C09D4/06C09D4/00C09D5/08C09D7/12
CPCC09D4/06C09D5/08C09D5/18C09D7/61C09D7/62C09D7/63C09D7/70C08F279/04
Inventor 萧鲲
Owner WUHU CHANGQI FURNACE
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