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Thermochromic ceramic coating material and coating

A technology of temperature-sensitive discoloration and ceramic coatings, applied in coatings, heat-sensitive coatings, etc., can solve the problems of high cost, cumbersome process, and failure to meet the requirements of use, and achieve the effects of low cost, simple preparation process, and convenient application

Active Publication Date: 2013-05-22
INNOTEK TECH CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above technical scheme, the sol-gel coating and the coating including the thermochromic pigment need to be prepared separately, and multi-layer coating is required, the process is cumbersome and the cost is high
[0004] Furthermore, the operating temperature of cooking utensils is often above 200°C, while the limit operating temperature of conventional organic thermochromic powders is below 200°C, which cannot meet the operating requirements.

Method used

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  • Thermochromic ceramic coating material and coating
  • Thermochromic ceramic coating material and coating
  • Thermochromic ceramic coating material and coating

Examples

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preparation example Construction

[0030] Preparation method of thermochromic ceramic coating:

[0031] The present invention provides a method for manufacturing thermochromic ceramic paint. Firstly, silica sol and inorganic or organic thermochromic powder are mixed and ground until the precipitate disappears completely as liquid A; then the organosilane and catalyst are mixed Evenly use it as liquid B; then add liquid B to the dispersed liquid A, aging for 1.5-12 hours, and finally filter with a 100-150 mesh filter to obtain the ceramic coating of the present invention.

[0032] When the ceramic coating is to be further added with silicone oil, the silica sol and the thermochromic powder can be mixed together and ground until the precipitate disappears completely as liquid A; then the organosilane, silicone oil and catalyst are mixed uniformly as liquid B; then The B solution is added to the dispersed A solution, cured for 1.5-12 hours, and finally filtered with a 100-150 mesh filter to obtain the ceramic coating o...

Embodiment 1

[0046] First, 100 parts by weight of silica sol and 15 parts by weight of thermochromic powder Bi 2 O 3 Mix together and grind until the precipitate completely disappears as liquid A; then mix 60 parts by weight of methyltrimethoxysilane, 5 parts by weight of phenyltrimethoxysilane and 0.6 parts by weight of acetic acid as liquid B; Add liquid B to liquid A that has been dispersed, mature for 2 hours, and finally filter with a 100-150 mesh filter to prepare the thermochromic ceramic coating of the present invention.

Embodiment 2

[0048] First, 100 parts by weight of silica sol and 45 parts by weight of thermochromic powder BiVO 4 Mix together and grind until the precipitate disappears completely as liquid A; then mix 50 parts by weight of methyltrimethoxysilane, 5 parts by weight of silicone oil PMX-0156 and 0.3 parts by weight of formic acid as liquid B; The liquid is added to the dispersed A liquid, cured for 1.5 hours, and finally filtered with a 100-150 mesh filter to obtain the thermochromic ceramic coating of the present invention.

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Abstract

The invention relates to a thermochromic ceramic coating material. The coating material is characterized by comprising the following components in parts by weight: 100 parts of silica sol, 50-100 parts of organosilane, 0.3-1 part of catalyst and 15-45 parts of inorganic thermochromic powder or 5-35 parts of organic thermochromic powder. The thermochromic ceramic coating is characterized by comprising a base coat which is made from the thermochromic ceramic coating material and a transparent finishing coat which is coated on a base coat surface. The thermochromic ceramic coating material provided by the invention is simple in preparation technology, low in cost and convenient to coat; the produced thermochromic ceramic coating has good hot and cold hardness and wear resistance and can change color according to temperature variation; and moreover, the using temperature of the organic thermochromic powder can be increased and can be normally used at 240 DEG C for 30 minutes.

Description

Technical field [0001] The invention relates to a ceramic paint and coating, in particular to a thermochromic ceramic paint and coating. Background technique [0002] Thermochromic paint is a special paint that uses color changes to display the surface temperature and distribution of objects. Under certain conditions, when reaching a certain temperature, a certain color change will appear, which can directly express the temperature of the coating. It has been widely used in the surface coating of kitchen utensils and other products. CN101538427A discloses a temperature-sensitive and color-changing material. The temperature-sensitive and color-changing material includes a film-forming base material, a temperature-changing pigment, and a color-changing auxiliary. The film-forming base material is acrylic, epoxy or polyester resin; and the temperature-sensitive color-changing material Applied to the outer wall of the electric kettle, the electric kettle displays different colors ac...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/26C09D7/12
Inventor 林学佐钟迪克
Owner INNOTEK TECH CHINA
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