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Photocatalytic self-cleaning nano-titania porcelain enamel substrate and method for preparing same

A nano-titanium dioxide, photocatalytic technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., to achieve the effects of low production cost, simple preparation process, and increased photocatalytic performance

Inactive Publication Date: 2009-09-02
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far there is no report about adding nano-titanium dioxide to the enamel glaze to prepare enamel with photocatalytic self-cleaning properties.

Method used

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  • Photocatalytic self-cleaning nano-titania porcelain enamel substrate and method for preparing same
  • Photocatalytic self-cleaning nano-titania porcelain enamel substrate and method for preparing same
  • Photocatalytic self-cleaning nano-titania porcelain enamel substrate and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An enamel substrate for photocatalytic self-cleaning properties. The chemical composition of its raw materials is shown in the table below

[0030]

[0031] (1) According to the above raw material composition SiO 2 40, Al 2 o 3 1, B 2 o 3 16.TiO 2 20,K 2 o 3 , Na 2 O 10,Na 2 SiF 6 8,P 2 o 5 2. Convert various ingredients into quartz, feldspar, borax, titanium dioxide, soda ash, ice crystal, sodium dihydrogen phosphate and other raw materials, weigh and mix them, put them in a crucible, and melt them at 1250 ° C. After melting, put them into tap water Quenching, removing and drying at 120°C to obtain enamel frit.

[0032] (2) Mix the enamel frit obtained in the above step (1) according to the composition in the table below, then ball mill and grind for 1 to 2 hours, and finally pass through an 80-mesh sieve to obtain an enamel glaze for future use.

[0033]

[0034] (3) Take 100*100*2mm steel plate or cast iron, carry out derusting and degreasin...

Embodiment 2

[0038] An enamel substrate for photocatalytic self-cleaning properties. The chemical composition of its raw materials is shown in the table below

[0039]

[0040] (1), according to the composition of SiO 2 42, Al 2 o 3 1, B 2 o 3 14. TiO 2 19,K 2 O3, Na 2 O 11,Na 2 SiF 6 7, P 2 o 5 3. Convert various ingredients into quartz, feldspar, borax, titanium dioxide, soda ash, ice crystals, sodium dihydrogen phosphate and other raw materials, weigh and mix them, put them in a crucible, and melt them at 1250 ° C. After melting, put them into tap water Quenching, removing and drying at 120°C to obtain enamel frit.

[0041] (2) Mix the enamel frit obtained in step (1) according to the composition in the table below, then ball mill and grind for 1 to 2 hours, and finally pass through an 80-mesh sieve for later use.

[0042]

[0043] (3), take 100*100*2mm steel plate or cast iron, 10% H 2 SO 4 Carry out derusting and degreasing treatment with 8wt% industrial soa...

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PUM

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Abstract

The invention relates to a photocatalytic self-cleaning nano-titania porcelain enamel substrate and a method for preparing the same. Raw materials comprise the following chemical compositions in percentage by weight: 35.0 to 68.0 percent of SiO2, 0.5 to 3.0 percent of Al2O3, 10.0 to 20.0 percent of B2O3, 12.0 to 20.0 percent of TiO2, 1.0 to 5.0 percent of K2O, 5.0 to 12.0 percent of Na2O, 3.0 to 8.0 percent of SiF6 and 1.0 to 3.0 percent of P2O5. The preparation method comprises that: the raw materials are mixed, melted, quenched and dried to prepare a porcelain enamel melted block; the porcelain enamel melted block, nano-titania, and the like are mixed, ground and sifted to obtain porcelain enamel; a steel plate which is subjected to derusting treatment is coated with the porcelain enamel so as to obtain the photocatalytic self-cleaning nano-titania porcelain enamel substrate with excellent photocatalytic performance and chemical stability; and the photocatalytic self-cleaning nano-titania porcelain enamel substrate has a simple preparation process and low production cost.

Description

technical field [0001] The invention belongs to enamel production, in particular to a photocatalyzed self-cleaning nano-titanium dioxide enamel substrate and a preparation method thereof. Background technique [0002] Since the discovery of titanium dioxide's photocatalytic properties in 1972, it has been widely used in pollutant degradation, sterilization and environmental protection due to its high photocatalytic performance, excellent chemical stability, low cost and non-toxicity. [0003] Titanium dioxide will produce more free electrons, free radicals and holes under ultraviolet light or sunlight. They have good redox ability, can sterilize, degrade organic matter, and eliminate nitrogen oxidation in automobile exhaust or air. compounds, sulfides, carbon monoxide, etc., and can also degrade organic matter in wastewater. Titanium dioxide itself is non-toxic and harmless to the human body, resistant to alkali and acid, and is an environmentally friendly material. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/08C23D1/00C23D5/02C23D11/00B01J21/06
Inventor 钱蕙春蒋伟忠
Owner SHANGHAI INST OF TECH
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