Preparation method of infrared coating used for household cooking utensils, and preparation method of infrared coat

A technology of infrared paint and cooker, which is applied in the preparation, synthesis and preparation of infrared paint with high emissivity of infrared paint and coating, can solve the problem that the high-temperature resistance cannot meet the requirements for use of civil cookers and cannot be widely used in civil cookers , the problem of poor thermal shock resistance, etc., to achieve the effect of excellent energy saving effect, fewer types of raw materials, and strong thermal shock resistance

Active Publication Date: 2014-06-25
辽宁省乌科新材料产业研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing inorganic infrared coatings have poor thermal shock resistance, and coatings are often prepared by spraying or plasma spraying, which cannot be widely used in civilian cookers.
Moreover, the binder used in the coating is water glass, and its high temperature resistance is far from meeting the requirements of civilian cookers.

Method used

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  • Preparation method of infrared coating used for household cooking utensils, and preparation method of infrared coat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] By weight, 15 parts of TiO 2 , 30 parts of CuO, 55 parts of Cr 2 o 3 Mix it with 200 parts of absolute ethanol and add it to a ball mill, wet ball mill for 4 hours, and dry to obtain a mixed powder; the mixed powder is roasted at 1000°C for 1 hour in an oxygen atmosphere, and passed through a 200-mesh sieve to obtain an infrared composite filler;

[0024] Use alumina sol as the adhesive, mix according to the ratio of infrared composite filler: alumina sol = 1:2, and then ball mill for 1 hour to obtain infrared coating; use the reverse pull method to coat the coating on the substrate to form a thickness of 0.15-0.20mm Infrared coating.

[0025] The obtained coating has an emissivity greater than 0.88 in the entire infrared range. After being kept at 1200°C for 10 minutes, it is quenched in water for 5 times, and the coating does not fall off or crack. Using it on civilian stoves can save energy by 10%.

Embodiment 2

[0027] By weight, 15 parts of TiO 2 , 25 parts of CuO, 60 parts of Cr 2 o 3 Mix with 150 parts of absolute ethanol and add to a ball mill, wet ball mill for 4 hours, and dry to obtain a mixed powder; the mixed powder is roasted at 1200°C for 1 hour in a nitrogen atmosphere, and passed through a 200-mesh sieve to obtain an infrared composite filler;

[0028] Use silica sol as the adhesive, mix according to the ratio of infrared composite filler: silica sol=2:1, and then ball mill for 1 hour to obtain infrared coating; use the reverse pull method to coat the coating on the substrate to form a thickness of 0.15-0.20 mm of infrared coating.

[0029] The obtained coating has an emissivity greater than 0.96 in the entire infrared range. After being kept at 1200°C for 10 minutes, it is water quenched 7 times, and the coating does not fall off or crack. Using it on civilian stoves can save energy by 30%.

Embodiment 3

[0031] In parts by weight, 10 parts of TiO 2 , 20 parts of CuO, 70 parts of Cr 2 o 3 Mix and add to a ball mill, dry ball mill for 4 hours, and dry to obtain a mixed powder; the mixed powder is roasted at a high temperature of 1200°C for 1 hour in an oxygen atmosphere, and passed through a 200-mesh sieve to obtain an infrared composite filler;

[0032] Use alumina sol as the adhesive, mix according to the ratio of infrared composite filler: alumina sol = 1:2, and then ball mill for 1 hour to obtain the infrared coating; use the reverse pull method to coat the coating on the substrate to form a thickness of 0.15-0.20mm Infrared coating.

[0033] The obtained coating has an emissivity greater than 0.91 in the entire infrared range. After being kept at 1200° C. for 10 minutes, it is water quenched 5 times, and the coating does not fall off or crack. Using it on civilian stoves can save energy by 15%.

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Abstract

The invention relates to a preparation method of an infrared coating used for household cooking utensils, and a preparation method of an infrared coat. The problems of low emissivity, large thermal efficiency loss and limited coating shape of coats existing in the prior art at a high temperature are mainly solved in the invention. The infrared coating is synthesized by using an infrared composite filler and a high temperature resistant adhesive, wherein the composite filler is synthesized by using the following raw materials, by weight, 35-75 parts of Cr2O3, 5-30 parts of TiO2, 20-35 parts of CuO, and 0/100-200 parts of anhydrous ethanol. The preparation method of the infrared coating comprises the following steps: mixing the raw materials according to above proportions, ball-milling, carrying out high temperature roasting to prepare the infrared composite filler, ball-milling the infrared composite filler and the high temperature resistant adhesive in proportion, and mixing to prepare the infrared coating. The preparation method of the infrared coat is characterized in that the infrared coat with high emissivity is prepared by coating the infrared coating on the household cooking utensils through a reverse dip-coating process. The coat prepared in the invention still has a high emissivity at a high temperature, has a total infrared emissivity of above 0.90, has a superior thermal shock resistance, and can obviously improve the heating efficiency in order to realize energy saving. The reverse dip-coating process adopted in the invention is suitable for coating the cooking utensils with complex shapes.

Description

technical field [0001] The invention relates to an infrared coating for civil kitchen utensils and a preparation method of the coating, in particular to a synthesis of an infrared coating and a preparation method of a high-emissivity infrared coating, belonging to the technical field of infrared coatings and coating preparation . Background technique [0002] The thermal efficiency of the existing common gas stove is only 52%, and the energy loss is nearly 50%. The use of high-emissivity infrared coatings on heat conductors has obvious energy-saving effects. The use of high-emissivity infrared coatings on heating furnaces has an energy-saving effect of 5% to 10%, and the use of high-emissivity infrared coatings on heating pipes can reach 10% to 30%. [0003] Inorganic coatings generally have high temperature resistance, high hardness, super weather resistance and corrosion resistance, and their performance is far superior to the fluorine-containing coatings and silicone coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/24C04B28/06C04B14/30
Inventor 王玉现韩绍娟许壮志薛健张明杨殿来
Owner 辽宁省乌科新材料产业研究有限公司
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