Porous ceramic material with high water absorption rate and high water retention rate and preparation method and application thereof

A technology of porous ceramics and water retention rate, which is applied to the formulation and application of ceramic products and perfume preparations, can solve the problems of temporary use only, weak water retention, poor water retention performance, etc., and achieves a simple and efficient preparation method. The effect of improving water retention and reducing energy consumption

Active Publication Date: 2018-01-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing porous ceramic materials have a large specific surface area, most ceramic materials have poor water retention performance
[0003] Most of the devices on the market for storing perfume and slow-release perfume are made of glass, and use physical openin...

Method used

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  • Porous ceramic material with high water absorption rate and high water retention rate and preparation method and application thereof
  • Porous ceramic material with high water absorption rate and high water retention rate and preparation method and application thereof
  • Porous ceramic material with high water absorption rate and high water retention rate and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for preparing a porous ceramic material with high water absorption rate and high water retention rate, comprising the following steps:

[0035] (1) Mix kaolin, feldspar, talc, diatomaceous earth and starch according to the mass ratio of 6:4:1:12:2, put them into a ball mill and mill them for 20 minutes (rotating speed is 300r / min), and dry (dry The temperature is 100°C, the time is 1h), and the initial powder is obtained by passing through a 60-mesh sieve;

[0036] (2) Take 3g of sodium carboxymethyl cellulose solution with a concentration of 20g / L and evenly drop it into 125g of the initial powder in step (1), grind for 0.5h, and mix the powder and sodium carboxymethyl cellulose solution evenly , through a 60-mesh sieve to obtain a secondary powder;

[0037] (3) Dry press the secondary powder of step (2) under 20MPa pressure (molding time is 3min), and then sinter at 1100°C (sintering time is 30min) to obtain a powder with high water absorption rate High wat...

Embodiment 2

[0040] A method for preparing a porous ceramic material with high water absorption rate and high water retention rate, comprising the following steps:

[0041] (1) Mix kaolin, feldspar, talc, diatomaceous earth and starch according to the mass ratio of 5:3:1:12:3, put them into a ball mill for 10 minutes (rotating speed is 250r / min), and dry (dry The temperature is 100°C, the time is 1h), and the initial powder is obtained by passing through a 60-mesh sieve;

[0042] (2) Take 2g of sodium carboxymethyl cellulose solution with a concentration of 20g / L and evenly drop it into 120g of the initial powder in step (1), grind for 0.5h, and mix the powder and sodium carboxymethyl cellulose solution evenly , through a 60-mesh sieve to obtain a secondary powder;

[0043] (3) Dry press the secondary powder of step (2) under 30MPa pressure (molding time is 3min), and then sinter at 1100°C (sintering time is 30min) to obtain a powder with high water absorption rate and high water retentio...

Embodiment 3

[0046] A method for preparing a porous ceramic material with high water absorption rate and high water retention rate, comprising the following steps:

[0047] (1) Mix kaolin, feldspar, talc, diatomaceous earth and starch according to the mass ratio of 6:3:1:12:3, put them into a ball mill for 10 minutes (rotating speed is 300r / min), and dry (dry The temperature is 100°C, the time is 0.5h), and the initial powder is obtained by passing through a 30-mesh sieve;

[0048] (2) Take 2g of sodium carboxymethyl cellulose solution with a concentration of 20g / L and evenly drop it into 125g of the initial powder in step (1), grind for 0.5h, and mix the powder and sodium carboxymethyl cellulose solution evenly , through a 30-mesh sieve to obtain a secondary powder;

[0049] (3) Dry press the secondary powder of step (2) under a pressure of 20 MPa (molding time is 3 minutes), and then sinter at 1050°C (sintering time is 30 minutes), to obtain a powder with high water absorption rate and ...

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Abstract

The invention belongs to the technical field of porous ceramic materials, and discloses a porous ceramic material with a high water absorption rate and a high water retention rate and a preparation method and application thereof. The method comprises the following steps: (1) mixing kaolin, diatomite, talc, starch and feldspar uniformly, performing ball milling, performing drying, and performing sieving to obtain initial powder; (2) grinding a binder and the initial powder obtained in the step (1), and performing sieving to obtain secondary powder; and (3) performing dry pressing molding on thesecondary powder obtained in the step (2), and performing sintering to obtain the porous ceramic material with the high water absorption rate and the high water retention rate. The ceramic material provided by the invention has the advantages of the high water absorption rate, the high water retention rate, good bending resistant strength, and a stable release speed and good morphological stability in absorption and release processes; and the preparation method provided by the invention is simple and high-efficiency, the energy consumption is less, and the ceramic material is suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of preparation of porous ceramic materials, and in particular relates to a porous ceramic material with high water absorption and high water retention rate, a preparation method and application thereof. technical background [0002] Porous ceramic materials have high porosity, low density, and high specific surface area, and are widely used in humidity control materials, catalytic carrier materials, filter materials, sound-absorbing materials, thermal insulation materials and other fields. Although the existing porous ceramic materials have a large specific surface area, most of them have poor water retention performance. [0003] Most of the devices on the market for storing perfume and slow-release perfume are made of glass, and use physical openings or coating films to control the volatilization of perfume. Such devices are either not strong in water retention and can only be used in future Or it is not ...

Claims

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Application Information

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IPC IPC(8): C04B38/08C04B38/06C04B35/14C04B35/622C04B35/636A61K8/02A61Q13/00
Inventor 王慧刘霄昱刘娉
Owner SOUTH CHINA UNIV OF TECH
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