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Environment-friendly ceramic and preparation method thereof

A ceramic and environmental protection technology, applied in the field of ceramics, can solve the problems of unsatisfactory antibacterial effect, unsatisfactory bactericidal effect, poor antibacterial effect, etc., and achieve excellent antibacterial effect, good air purification effect, and excellent antibacterial performance.

Active Publication Date: 2020-06-05
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Commonly used antibacterial ceramics are titanium-based antibacterial ceramics and silver-based antibacterial ceramics, which are the most widely used. However, the application of the two also has disadvantages. If the silver ion content is insufficient, the bactericidal effect is not ideal, and silver ions will be lost when fired at high temperature. Antibacterial effect passable
However, titanium-based antibacterial ceramics are mostly photocatalyst catalytic ceramics, and the antibacterial effect when applied to ceramics is not good.

Method used

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Examples

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preparation example Construction

[0038] Specifically, the preparation method of calcium phosphate-based nano ceramic material comprises the following steps:

[0039] S1. Calcining shell powder at 800-1000°C for 3-4 hours;

[0040] S2. Mix the powder obtained by calcining S1 with phosphoric acid and water evenly, put it into a ball mill after cooling down to room temperature, and then put the rare earth element inorganic compound into the ball mill, and ball mill for 0.5-2 hours;

[0041] S3. Add silver salt solution into the ball mill, ball mill for 0.5-2 hours, dry, then send into the ultra-fine ball mill for ball milling for 0.5-1 hour, and pass through a 200-mesh sieve.

[0042] Specifically, the weight percent content of the rare earth element in the composite phosphate material is 1.5-2.5 times the weight percent content of the silver element.

[0043] Specifically, the preparation method of the modified clay is: weigh bauxite and kaolin according to the mass ratio of 5-10:2-6, mix them evenly, add a st...

Embodiment 1

[0045] This embodiment provides a kind of environment-friendly ceramics, and the preparation method comprises the following steps:

[0046] (1) Raw material pretreatment:

[0047] Calcinate potassium feldspar and albite at 1100°C for 5 hours, cool to room temperature, grind, and pass through a 200-mesh sieve; calcinate medical stone and spinel at 900°C for 8 hours, cool to room temperature, grind, and pass through a 200-mesh sieve screen;

[0048] Modification of clay: Mix bauxite and kaolin evenly at a mass ratio of 7:3, add an appropriate amount of 2M hydrochloric acid to acidify, heat to 60°C, keep warm for 1.5 hours, filter, wash until neutral, dry, and dry at 500 Calcining at ℃ for 1.5 hours, passing through a 120-mesh sieve; taking chitosan in acetic acid solution, preparing a chitosan colloidal solution with a concentration of 15%, and then adding chitosan colloidal solution with a percentage content of 5% silver nitrate and 4% activated carbon , 2% nano-titanium diox...

Embodiment 2

[0056] This embodiment provides an environment-friendly ceramic, which is different from Example 1 in that the steps for preparing the environment-friendly ceramic are slightly different.

[0057] Step (2): Take 40 parts by weight of composite phosphate material, 30 parts by weight of modified clay, 8 parts by weight of potassium feldspar, 10 parts by weight of albite feldspar, 15 parts by weight of medical stone and 5 parts by weight of spinel as blanks Raw materials are put into a ball mill, adding appropriate amount of water, grinding for 20 hours, removing impurities, pressing mud, and refining mud;

[0058] Step (3): pressing the billet prepared in step (2), drying, bisque firing at 850° C. for 10 hours, and cooling to room temperature;

[0059] Step (4): glaze the product obtained by bisque firing, and send it to a kiln for firing at 1100° C. to obtain environmentally friendly ceramics.

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Abstract

The invention discloses an environment-friendly ceramic and a preparation method thereof. The environment-friendly ceramic is prepared from a composite phosphate material, modified clay, potassium feldspar, soda feldspar, medical stone and spinel. The composite phosphate material is prepared from the following components in parts by weight: 80-100 parts of shell powder, 35-50 parts of 40%-45% phosphoric acid, 5-15 parts of a silver salt solution and 10-20 parts of a rare earth element inorganic compound. Shell powder is used as a raw material and is doped by silver ions and rare earth elementsthrough chemical modification to prepare a calcium phosphate based nano ceramic material, which is used to prepare the ceramic with modified clay, potassium feldspar, soda feldspar, medical stone andspinel, the prepared ceramic can meet the requirements on whiteness, viscosity and hardness, the problem that conventional ceramic is insufficient in strength and abrasion resistance is solved, and the ceramic also has antibacterial and air-purifying functions.

Description

technical field [0001] The invention relates to the field of ceramics, in particular to an environment-friendly ceramic and a preparation method thereof. Background technique [0002] At present, the main raw materials used for building ceramics are refractory clay, feldspar and quartz, supplemented by chemical additives to improve the properties of ceramic whiteness, hardness and porosity. Due to the addition of chemical additives, ceramics may release harmful substances to the human body. substance. And along with the wide application of architectural ceramics, there is an urgent need for a ceramic with multiple functional effects that can purify the air. [0003] Commonly used antibacterial ceramics are titanium-based antibacterial ceramics and silver-based antibacterial ceramics, which are the most widely used. However, the application of the two also has disadvantages. If the silver ion content is insufficient, the bactericidal effect is not ideal, and silver ions will...

Claims

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Application Information

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IPC IPC(8): C04B35/447C04B35/622C04B35/626C04B38/06C04B41/86B01J27/18A01N59/16A01P3/00A01P1/00
CPCC04B35/447C04B35/622C04B35/62605C04B35/62685C04B38/068C04B41/009C04B41/5022C04B41/86B01J27/1817A01N59/16C04B2235/3472C04B2235/3427C04B2235/3222C04B2235/349C04B2235/3217C04B2235/3232C04B2235/422C04B2235/483C04B2235/5436C04B2235/3229C04B2235/602C04B2235/606C04B2235/656C04B2235/6567C04B2235/96C04B2235/77
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