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High temperature-resistant, high-radiation, anti-cracking and energy-saving coating and preparation method

An energy-saving coating and high-radiation technology, applied in the direction of fire-resistant coatings, coatings, sustainable manufacturing/processing, etc., can solve problems such as cracking, coating cracking, crystal growth, etc., and achieve simple process, high radiation rate, and high temperature The effect of emissivity

Active Publication Date: 2017-05-10
SINOSTEEL LUOYANG INST OF REFRACTORIES RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, the development and research of high-radiation energy-saving coatings have made some progress, and the application in industrial boilers and kilns has received good energy-saving effects. The invention patent (application number 201410055343.8) discloses a high-emissivity high-temperature Nano-ceramic coatings mainly use nano-powders as raw materials to prepare coatings. The emissivity of the coatings is not less than 0.94. However, nano-powders are easy to sinter and shrink at high temperatures, and the crystals grow. On the one hand, it may affect the coating at high temperatures. Emissivity and the energy-saving effect of the coating, on the other hand, if the coating shrinks too much, it may cause cracking and peeling off of the coating
Invention patent (Application No. 201010117801.8) discloses a high-temperature energy-saving coating for metals. The particle size of the selected raw materials is less than 5 microns. The prepared coating has a high emissivity and the radiation ability does not attenuate. However, the coating is used for a long time at high temperature. It is inevitable that there will be sintering shrinkage, and when the shrinkage is too large, it will cause cracking of the coating and affect the service life of the coating.
At present, the preparation of energy-saving coating products mostly uses micro-nano powder as raw material, because the smaller the particle size of the powder, the larger the specific surface and the higher the emissivity. Micro-nano raw materials will produce sintering shrinkage when used at high temperature for a long time. When the coating When shrinking to a certain extent, cracking and peeling will occur, which will affect the use effect of the coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: A high-temperature, high-radiation anti-cracking and energy-saving coating and its preparation method are composed of the following components by weight. The high-temperature-resistant powder consists of 5 parts of ferric oxide, 10 parts of silicon carbide, and 10 parts of silicon Zirconium oxide, 2 parts of chromium oxide and 3 parts of nickel oxide, the high-temperature filler is composed of 10 parts of alumina powder, 5 parts of quartz powder and 2 parts of zirconia powder, and the fiber filament is composed of 1 part of metal tungsten wire and 2 parts of alumina crystal fiber filaments, 35 parts of silicone resin emulsion, 15 parts of water, 0.15 parts of polyethylene glycol water reducer CAMTMENT FS10 dispersant produced by BASF, Germany, 0.3 parts of silane coupling agent, silicone 0.05 part of defoamer.

[0027] According to the above ratio, first put water and silicone resin emulsion into the ball mill for 10 minutes, then put the high radiation powde...

Embodiment 2

[0028] Example 2: A high-temperature, high-radiation anti-cracking and energy-saving coating and its preparation method, consisting of the following components by weight, the high-temperature-resistant powder consists of 8 parts of ferric oxide, 12 parts of silicon carbide, and 12 parts of silicon Zirconium oxide, 4 parts of chromium oxide and 4 parts of nickel oxide, the high-temperature filler is composed of 10 parts of alumina powder, 5 parts of quartz powder and 2 parts of zirconia powder, and the fiber wire is composed of 0.5 parts of metal platinum and rhodium wire It consists of 0.5 parts of zirconia crystal fiber filaments, 30 parts of silicone resin emulsion, 12 parts of water, 0.2 parts of sodium tripolyphosphate, 0.2 parts of silane coupling agent, and 0.1 part of silicone defoamer.

[0029] According to the above ratio, first put water and silicone resin emulsion into the ball mill for 10 minutes, then put the high-radiation powder and high temperature resistant fil...

Embodiment 3

[0030] Embodiment 3: A high-temperature, high-radiation anti-cracking and energy-saving coating and its preparation method are composed of the following components by weight. The high-temperature-resistant powder consists of 3 parts of ferric oxide, 12 parts of silicon carbide, and 7 parts of silicon Zirconium oxide, 4 parts of chromium oxide and 4 parts of nickel oxide, the high-temperature filler is composed of 5 parts of alumina powder, 6 parts of quartz powder and 4 parts of zirconia powder, 1 part of metal tungsten wire, and cerium oxide fiber wire 4 parts, 50 parts of silica sol, 0.2 parts of sodium hexametaphosphate dispersant, 0.15 parts of silane coupling agent, and 0.15 parts of silicone defoamer.

[0031] According to the above ratio, first put water and silicone resin emulsion into the ball mill for 10 minutes, then put the high-radiation powder and high temperature resistant filler into the ball mill for 40 minutes and add the corresponding dispersant, coupling age...

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Abstract

The invention discloses high temperature-resistant, high-radiation, anti-cracking and energy-saving coating and a preparation method. The high temperature-resistant, high-radiation, anti-cracking and energy-saving coating can be applied to various industrial furnaces and boilers. The high temperature-resistant, high-radiation, anti-cracking and energy-saving coating is prepared from the following components in parts by weight: 30-40 parts of high temperature-resistant and high-radiation powder, 10-20 parts of a high temperature-resistant filler, 1-5 parts of high temperature-resistant fiber filaments, 30-50 parts of a bonding agent and 10-20 parts of a solvent, and further 0.1-0.2 part of a dispersing agent, 0.15-0.3 part of a coupling agent and 0.05-0.15 part of a defoaming agent. The high temperature-resistant, high-radiation, anti-cracking and energy-saving coating is characterized in that metals and non-metallic fiber filaments are introduced into a coating slurry, on one hand, the non-metallic fiber filaments have a certain suspending effect in the coating slurry and can improve the stability of the slurry, and on the other hand, the fiber filaments can hinder the sintering contraction and cracking of the coating and prolong the service life of the coating.

Description

technical field [0001] The invention belongs to the field of high-temperature energy-saving coatings, and in particular relates to a high-temperature-resistant, high-radiation anti-cracking and energy-saving coating and a preparation method thereof. [0002] technical background [0003] The increasing shortage of mineral resources and energy in the world today seriously threatens the development of world industry. The energy consumption of industrial kilns accounts for about 25% to 40% of the total energy consumption, while the average thermal efficiency of kilns is only about 32%. The main reason is that on the one hand, the heat is lost through the furnace lining and the outer wall of the furnace, and on the other hand, the heat utilization efficiency of the kiln and boiler is low, so that the heat cannot be effectively used and discharged, resulting in a huge waste of energy. High temperature resistant high emissivity paint is a new type of energy-saving paint with good...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D7/12
CPCC08K2201/003C08K2201/004C08K2201/014C08L2201/08C09D5/18C09D7/61C09D7/70C09D183/04C08L71/02C08K13/04C08K2003/2272C08K3/34C08K2003/2251C08K2003/2293C08K2003/2227C08K3/36C08K2003/2244C08K7/06C08K2003/0887C08K7/08C08K2003/2213Y02P20/10
Inventor 王刚张伟韩建燊文九巴张春雨
Owner SINOSTEEL LUOYANG INST OF REFRACTORIES RES
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