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A kind of preparation method of inorganic high emissivity coating containing graphene oxide

A high-emissivity, graphene technology, applied in the field of preparation of inorganic high-emissivity coatings, can solve the problems of low emissivity of inorganic high-emissivity coatings

Active Publication Date: 2021-12-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problem of low emissivity of existing inorganic high-emissivity coatings, and provides a preparation method of inorganic high-emissivity coatings containing graphene oxide

Method used

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  • A kind of preparation method of inorganic high emissivity coating containing graphene oxide
  • A kind of preparation method of inorganic high emissivity coating containing graphene oxide
  • A kind of preparation method of inorganic high emissivity coating containing graphene oxide

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specific Embodiment approach 1

[0032] Specific embodiment one: present embodiment is a kind of preparation method of the inorganic high emissivity coating containing graphene oxide, specifically is to carry out as follows according to the following steps:

[0033] 1. Ball milling: Mg 2 B 2 o 5 Whisker powder and SiO 2 The powders were wet-mixed and ball-milled at a speed of 320 rpm to 350 rpm for 8 hours to 9 hours, and the two slurries after ball milling were filtered through a 100-mesh sampling sieve to separate the balls. Dry each slurry in a drying oven at 60°C to 80°C to obtain two cakes, grind the two cakes respectively and put them in a drying oven for 1h to 1.5h to obtain ball-milled SiO 2 Mg after powder and ball milling 2 B 2 o 5 Whisker powder;

[0034] Ball milled SiO 2 In the case of powder, it is SiO according to the mass ratio 2 Powder: Grinding Ball: Water = 1:2:1;

[0035] Milled Mg 2 B 2 o 5 Whisker powder, according to the mass ratio of Mg 2 B2 o 5 Whisker powder: grinding ...

specific Embodiment approach 2

[0040] Specific embodiment two: the difference between this embodiment and specific embodiment one is: ball milling SiO in step one 2 The powder balls are zirconia. Others are the same as the first embodiment.

specific Embodiment approach 3

[0041] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: ball milling Mg in step one 2 B 2 o 5 The grinding ball of the whisker powder is zirconia. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of an inorganic high-emissivity coating containing graphene oxide, which relates to a preparation method of an inorganic high-emissivity coating. The invention aims to solve the technical problem of low emissivity of existing inorganic high-emissivity coatings. The present invention: 1. Ball milling; 2. Preparation of coating slurry; 3. Incorporation of graphene oxide; 4. Sintering. The invention adds graphene oxide, and the graphene oxide has high emissivity, large specific surface area, good thermal conductivity and good water solubility. Utilize the high emissivity of the C=C bond in graphene oxide to increase the emissivity of the coating; the large specific surface area of ​​graphene oxide provides a large number of attachment points for the micro-nano particles of the coating, and the graphene sheet-like layered structure can Improve the internal interface of the coating, increase the number of reflection and absorption of radiation waves inside the coating, and achieve an increase in the emissivity of the coating.

Description

technical field [0001] The invention relates to a preparation method of an inorganic high-emissivity coating. Background technique [0002] High-emissivity materials can quickly and efficiently radiate the heat of the substrate in the form of infrared radiation, and have a wide range of needs in aerospace thermal protection and industrial furnaces to improve thermal efficiency. With the continuous development of the aerospace industry, the demand and performance requirements for high-emissivity coatings are getting higher and higher. The comprehensive performance of a single material has been difficult to meet the requirements. The research of high-emissivity coatings is moving towards multi-component doping. , Multiple material systems are developing in the direction of compounding each other. [0003] Graphene oxide is a honeycomb two-dimensional planar crystal structure composed of a single layer of carbon atoms. It has excellent physical and chemical properties: good th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/81C04B35/14C04B35/622
CPCC04B35/14C04B35/62222C04B2235/5276C04B2235/6581C04B2235/3427C04B2235/3409C04B2235/425C04B2235/3821C04B2235/96
Inventor 宋广平赫晓东李明伟何飞林秀何世峰刘超宇
Owner HARBIN INST OF TECH
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