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A kind of self-cleaning nano heat insulation coating based on cesium tungsten bronze and its preparation method

A cesium tungsten bronze and nano heat insulation technology, applied in the field of coatings, can solve the problems of injury to construction workers and users, poor dispersion, etc., and achieve the effects of enhanced anti-fouling performance, low content, and no harm to health

Active Publication Date: 2021-07-16
THE HONG KONG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transparent heat-insulating coating prepared by cesium tungsten bronze is a very novel transparent heat-insulating coating, which has not been promoted in the market at present; its poor dispersion is one of the main reasons for its limited application, and it is currently in the market Most of the thermal insulation coatings on the market are oil-based thermal insulation coatings, and the content of VOC (Volatile Organic Compounds) is high, which will cause harm to the construction workers and users.

Method used

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  • A kind of self-cleaning nano heat insulation coating based on cesium tungsten bronze and its preparation method
  • A kind of self-cleaning nano heat insulation coating based on cesium tungsten bronze and its preparation method
  • A kind of self-cleaning nano heat insulation coating based on cesium tungsten bronze and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0047] Take 10 mass parts of WCl 6 , 2 parts by mass of CsOH·5H 2 O, the acetic acid of 35 mass parts and the PVP of 15 mass parts, stir together, to obtain the first mixture; The first mixture is heated to 80 ℃, and insulation 2h; Then, the first mixture is continued to heat up to 220 ℃, and in React at this temperature for 20 hours, and then centrifuge and dry to obtain nano cesium tungsten bronze particles. Carry out XRD analysis to this nano cesium tungsten bronze particle, as figure 1 shown, and performed TEM analysis, as figure 2 As shown, it can be seen that its average diameter is 20 nm.

[0048] Take 10 parts by mass of TiCl 4 and 30 parts by mass of absolute ethanol, and mixed to obtain the second mixture; then the second mixture was reacted at 180°C for 8h, and processed by centrifugation and drying to obtain nano-TiO 2 particles. The TiO 2 Particles were subjected to XRD analysis, such as image 3 shown, and performed TEM analysis, as Figure 4 As shown, ...

no. 2 example

[0054] Get 13 mass parts of WCl 6 , 2 parts by mass of CsOH·5H 2 O, 40 parts by mass of acetic acid and 20 parts by mass of PVP were stirred together to obtain the first mixture; the first mixture was heated to 70°C and kept for 1.5h; then, the temperature of the first mixture was continued to rise to 220°C, and React at this temperature for 20 hours, and then centrifuge and dry to obtain nano cesium tungsten bronze particles.

[0055] Take 15 parts by mass of TiCl 4 and 40 parts by mass of absolute ethanol, and mixed to obtain the second mixture; then the second mixture was reacted at 180°C for 8h, and processed by centrifugation and drying to obtain nano-TiO 2 particles.

[0056] Get the nano cesium tungsten bronze particle of 50 mass parts, the nano TiO of 10 mass parts 2 Particles, 2 parts by mass of SN5040 coupling agent and 40 parts by mass of deionized water, and then ball milled together to obtain cesium tungsten bronze / TiO 2 Composite particle aqueous slurry, and...

no. 3 example

[0059] Take 15 mass parts of WCl 6 , 4 parts by mass of CsOH·5H 2 O, the acetic acid of 30 mass parts and the PVP of 15 mass parts, stir together, to obtain the first mixture; The first mixture is heated to 70 ℃, and insulation 1h; Then, the first mixture is continued to heat up to 240 ℃, and in React at this temperature for 30 hours, and then centrifuge and dry to obtain nano cesium tungsten bronze particles.

[0060] Get 12 parts by mass of TiCl 4 and 30 parts by mass of absolute ethanol, and mixed to obtain the second mixture; then the second mixture was reacted at 180°C for 8h, and processed by centrifugation and drying to obtain nano-TiO 2 particles.

[0061] Get the nano cesium tungsten bronze particle of 45 mass parts, the nano TiO of 8 mass parts 2 Particles, 2 parts by mass of SN5040 coupling agent and 50 parts by mass of deionized water, and then ball milled together to obtain cesium tungsten bronze / TiO 2 Composite particle aqueous slurry, and the cesium tungste...

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Abstract

The present invention proposes a self-cleaning nano heat-insulating coating based on cesium tungsten bronze and a preparation method thereof; the preparation method includes: step S1: using WCl 6 and CsOH·5H 2 O as a raw material, with PVP as a surfactant, and acetic acid as an acid catalyst, the nano-cesium tungsten bronze particles were prepared by a hydrothermal method; step S2: using TiCl 4 Preparation of nano TiO 2 Particles; step S3: the nano-cesium tungsten bronze particles, nano-TiO 2 Particles, silane coupling agent and water are ball milled and dispersed together to prepare cesium tungsten bronze / TiO 2 Composite particle aqueous slurry; retuned cesium tungsten bronze / TiO 2 Concentration of composite particle aqueous slurry to obtain self-cleaning nano thermal insulation coating. The self-cleaning nano heat-insulating coating and the preparation method thereof of the present invention are simple and practical, have good heat-insulating effect and good self-cleaning effect.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a self-cleaning nano heat-insulating coating based on cesium tungsten bronze and a preparation method thereof. Background technique [0002] According to relevant reports, building energy consumption accounts for 40% of global energy consumption, of which more than 50% of building energy consumption is air conditioning energy consumption; especially in my country, 95% of building energy consumption is from building heating, air conditioning, electric fans and household appliances. the resulting energy consumption. Therefore, the thermal insulation of buildings is of great significance for building energy saving. In order to ensure sufficient indoor lighting and beautiful building appearance, modern buildings are increasingly inclined to use large windows or glass curtain walls to replace the previous concrete and cement structures. Cooling in summer and heating in winter will inevitably b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/16C09D7/63B22F1/054
CPCC09D1/00C09D5/1618C09D5/1662B22F1/054B22F7/04C22C1/045C22C32/0031B22F2998/10C23C24/08C09D5/1681C22C27/04B22F9/24C22C1/05B22F2009/043C09D7/67B22F2304/05B22F9/04B22F2301/20
Inventor 吕琳汪远昊钟洪胡彦
Owner THE HONG KONG POLYTECHNIC UNIV
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