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Method for preparing water-based ceramic functional coating by taking high-entropy oxide as functional pigment

A technology of oxide ceramics and functional pigments, applied in chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve problems such as limited use and harsh curing process

Active Publication Date: 2021-09-10
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional solvent-based high-temperature coatings require harsh curing processes, which limits their use

Method used

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  • Method for preparing water-based ceramic functional coating by taking high-entropy oxide as functional pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Functional pigments (CuCrCoMn) 3 o 4 preparation of

[0037] Weigh CuO 11.933g (0.15mol), MnO 2 13.041g (0.15mol), Co 3 o 4 12.04g (0.05mol), Cr 2 o 3 11.399g (0.075mol) powder; according to the mass ratio of ball: material: water 2:1:3, pour the ball mill beads, raw materials and ultrapure water into the ball mill jar; and place the ball mill jar on the ball mill station for 1 hour Ball milling at a speed of 300r / min, followed by a pause of 10 minutes, as a ball milling cycle, after 10 minutes, ball milling for 1 hour at a speed of 300r / min, and a total of 5 hours of ball milling to obtain a mixed powder; then the mixed powder obtained after ball milling was dried 1. After grinding, put it in a box-type resistance furnace, raise the temperature to 500°C in the air atmosphere (the heating rate is 10°C / min), calcinate for 1 hour, and then cool to room temperature with the furnace to obtain single-phase (CuCrCoMn) 3 o 4 High entropy oxide powder. Particle si...

Embodiment 2

[0044] (1) Functional pigments (CuCrCoMnFe) 3 o 4 preparation of

[0045] Weigh CuO 11.933g (0.15mol), MnO 2 13.041g (0.15mol), Co 3 o 4 12.04g (0.05mol), Cr 2 o 3 11.399g (0.075mol), Fe 2 o 3 11.977g (0.075mol) powder; according to the mass ratio of ball: material: water 5:1:3, pour the ball mill beads, raw materials and ultrapure water into the ball mill jar; and place the ball mill jar on the ball mill station for 1 hour Ball milling at a speed of 500r / min, followed by a pause of 10 minutes, as a ball milling cycle, after 10 minutes, ball milling for 1 hour at a speed of 500r / min, and a total of 12 hours of ball milling to obtain a mixed powder; then the mixed powder obtained after ball milling was dried 1. After grinding, put it in a box-type resistance furnace, raise the temperature to 1200°C in the air atmosphere (the heating rate is 15°C / min), calcinate for 10 hours, and then air quench and cool to room temperature to obtain single-phase (CuCrCoMnFe) 3 o 4 H...

Embodiment 3

[0052] (1) Functional pigments (CuCrCoMnFeNi) 3 o 4 preparation of

[0053] Weigh CuO 11.933g (0.15mol), MnO 2 13.041g (0.15mol), Co 3 o 4 12.04g (0.05mol), Cr 2 o 3 11.399g (0.075mol), Fe 2 o 3 11.977g (0.075mol), NiO11.207g (0.15mol) powder; according to the ball: material: water mass ratio 4:1:3, pour the ball mill beads, raw materials and ultrapure water into the ball mill jar; and place the ball mill jar in the ball mill At the station, ball mill for 1 hour at a speed of 450r / min, and then pause for 10 minutes as a ball milling cycle. After 10 minutes, ball mill for 1 hour at a speed of 450r / min for a total of 7 hours to obtain a mixed powder; then The mixed powder obtained after ball milling was dried and ground, then placed in a box-type resistance furnace, heated to 850°C (heating rate: 14°C / min) in an air atmosphere, calcined for 7 hours, and then air quenched and cooled to room temperature to obtain a single phase (CuCrCoMnFeNi) 3 o 4 High entropy oxide ...

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Abstract

The invention discloses a method for preparing a water-based ceramic functional coating by taking a high-entropy oxide as a functional pigment, the water-based ceramic functional coating is prepared by taking a high-entropy oxide (A) 3O4 as the functional pigment and mixing with a filler, a binder, a solvent, a dispersing agent, a wetting agent, a defoaming agent and a flatting agent. A in the functional pigment high-entropy oxide (A) 3O4 is at least four kinds of metal elements including Cu, Cr, Co, Mn, Fe, Ni, Al, Zn, Ti and Mg, and in the high-entropy oxide ceramic, all the metal elements are equal in molar ratio. The functional coating prepared from the coating has a good solar spectrum selection characteristic within the wave band of 0.3-25 microns, has a good infrared radiation characteristic within the wave band of 3-12 microns, and has excellent thermal shock resistance and high temperature resistance (greater than or equal to 800 DEG C). Based on the regulation and utilization characteristics of electromagnetic waves, the method has important application value in the fields of solar photo-thermal utilization, infrared enhanced heat transfer, heat dissipation, energy conservation and the like.

Description

technical field [0001] The invention relates to a water-based functional coating, in particular to a method for preparing a water-based ceramic functional coating with high-entropy oxides as functional pigments, and belongs to the technical field of polymer materials. Background technique [0002] Coatings belong to organic chemical polymer materials, and the formed coating film belongs to the type of polymer compounds. There are four main functions of coatings: protection, decoration, concealing product defects and other special functions, and enhancing the value of products. With the increasing awareness of environmental protection, countries around the world have successively formulated the limit standards and regulations for volatile organic compounds (VOC) emissions. Solvent-based coatings are an important source of VOC, which cause great pollution to the environment and great harm to the human body. At the same time, there are safety hazards such as flammability and e...

Claims

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Application Information

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IPC IPC(8): C04B28/26C09C1/00C09C3/04C04B22/06C04B103/54
CPCC04B28/26C09C1/0009C09C3/041C09C3/043C04B22/06C04B2111/00525C04B2111/00008C04B2201/50C04B2103/54C04B14/306C04B2103/408C04B2103/50
Inventor 高祥虎刘维民刘刚刘宝华汪增强赵士杰
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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