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Supported composite photocatalytic coating and preparation method thereof

A technology of composite photocatalysis and photocatalytic layer, which is applied in the fields of wall decoration, building roof and building curtain wall, can solve the problems of limited application and low quantum efficiency, and achieves the effect of realizing building environmental protection, simple preparation method and preventing carbonization.

Active Publication Date: 2015-08-12
江苏倍立达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main photocatalyst on the market is TiO 2 , but TiO 2 The corresponding range is mainly in the ultraviolet, and the quantum efficiency is low, which limits its application

Method used

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  • Supported composite photocatalytic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) After removing the dust, dirt and impurities on the surface of the substrate, let it dry naturally for 3 hours to ensure that the surface of the substrate is clean and dry;

[0026] 2) Mix 5% 30-mesh glass powder and 15% nano-SiO 2 Add it to 80% silicone resin, stir evenly, apply it on the surface of the substrate, and form a waterproof adhesive layer after curing;

[0027] 3) 40% mica, 20% nano TiO 2 , 40%g-C 3 N 4 The supported photocatalyst was prepared after high-energy ball milling for 45 minutes, and the rotation speed was 400 r / min;

[0028] 4) Mix 4% loaded photocatalyst, 1% styrene-acrylic emulsion and 95% water evenly, spray on the waterproof adhesive layer, and dry for 30 minutes after spraying to make a loaded composite photocatalytic coating.

Embodiment 2

[0030] 1) After removing the dust, dirt and impurities on the surface of the substrate, let it dry naturally for 2 hours to ensure that the surface of the substrate is clean and dry;

[0031] 2) Mix 15% 40-mesh glass powder and 5% nano-SiO 2 Add it to 80% silicone resin, stir evenly, apply it on the surface of the substrate, and form a waterproof adhesive layer after curing;

[0032] 3) 40% bentonite, 25% nano TiO 2 , 35%g-C 3 N 4 The loaded photocatalyst was prepared after high-energy ball milling and mixing for 50 minutes, and the rotation speed was 500r / min;

[0033] 4) Take 6% loaded photocatalyst, 3% silicone acrylic emulsion and 91% water and mix evenly, spray on the waterproof adhesive layer, and dry for 10 minutes after spraying to make a loaded composite photocatalytic coating.

Embodiment 3

[0035] 1) After removing the dust, dirt and impurities on the surface of the substrate, let it dry naturally for 5 hours to ensure that the surface of the substrate is clean and dry;

[0036] 2) Mix 15% 50-mesh glass powder and 35% nano-SiO 2 Add it to 60% silicone resin, stir evenly, apply it on the surface of the substrate, and form a waterproof adhesive layer after curing;

[0037] 3) 50% zeolite, 35% nano TiO 2 , 15%g-C 3 N 4 High-energy ball milling and mixing for 30 minutes to make a supported photocatalyst, the rotation speed is 600r / min;

[0038] 4) Take 7% loaded photocatalyst, 4% polypropylene emulsion and 89% water to mix and spray evenly on the waterproof adhesive layer, and dry for 60 minutes after spraying to make a loaded composite photocatalytic coating.

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Abstract

The invention relates to a supported composite photocatalytic coating and a preparation method thereof. A supported photocatalytic coating and a waterproof adhesive layer are adhered to and combined with a substrate; a specially structured supporting material and a composite TiO2 / g-C3N4 photocatalyst are mixed in a high energy ball milling manner so as to effectively improve the supporting rate of the photocatalyst; and the response range can be widened to visible light from ultraviolet light through the composite photocatalyst, thus realizing effective photocatalysis efficiency. The supported composite photocatalytic coating and the preparation method thereof are simple in process, have relatively high economic and environment benefits and belong to high value-added resource utilization.

Description

technical field [0001] The invention relates to a composite photocatalytic coating for exterior walls, which is suitable for the fields of building roofs, building curtain walls, wall surface decoration and the like. Background technique [0002] The combination of photocatalysts and building materials is one of the hottest application directions in the field of photocatalysis. At present, in order to fully reflect the photocatalytic performance of photocatalytic materials, most of the photocatalytic materials used in the market are coated on the surface of cement building exterior walls in the form of paint, and their combination with the surface of cement buildings is relatively weak and durable. Poor performance and wear resistance. If the photocatalyst can be loaded on a material with a certain structure to make a mortar coating and coated on the surface of the cement building, the bonding force can be effectively improved. For photocatalysts, the porous or layered st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D125/14C09D133/04C09D123/12C09D121/00C09D7/12B01J27/24B01J29/04C04B41/48
Inventor 熊吉如袁慧雯
Owner 江苏倍立达新材料科技有限公司
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