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A kind of high-strength porous ceramic for air conditioner and preparation method thereof

A porous ceramic and high-strength technology, which is applied in the field of air purification, can solve the problems of insufficient film adhesion, short service life, and low compressive strength, and achieve economic and social benefits, long service life, and compressive strength. high effect

Inactive Publication Date: 2016-06-08
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, photocatalyst carriers include activated carbon felt, paper honeycomb, wire mesh, etc., but these carriers are not strong enough to adhere to the film, and the compressive strength is low, so they are not resistant to large air volumes and have a short service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high-strength porous ceramic for air-conditioning is prepared by a method comprising the following steps:

[0029] (1) Preparation of ceramic powder slurry

[0030] SiC, Al 2 o 3 with SiO 2 After adding the mixture with CMC to water for mixing, control the rotation speed at 1200r / min for sand milling for 1 hour, and then pass through an 80-mesh sieve to obtain a ceramic powder slurry;

[0031] SiC, Al used above 2 o 3 , SiO 2 And the mixture of CMC is calculated in parts by weight, and its consumption is as follows:

[0032] SiC77 parts

[0033] Al 2 o 3 20 copies

[0034] SiO 2 and CMC mixture 3 parts

[0035] 47 parts of water;

[0036] Of which SiO 2 and CMC mixture, by weight, SiO 2 : CMC is 1:4;

[0037] (2) Soak the polyurethane foam with a pore size distribution of 2-25 pores / cm in the ceramic powder slurry obtained in step (1), hang the slurry once every 30 minutes, repeat the slurrying operation three times, and the weight of the polyurethane ...

Embodiment 2

[0041] A high-strength porous ceramic for air-conditioning is prepared by a method comprising the following steps:

[0042] (1) Preparation of ceramic powder slurry

[0043] SiC, Al 2 o 3 with SiO 2 After adding the mixture with CMC to water for mixing, control the rotation speed at 1200r / min for sand milling for 1 hour, and then pass through an 80-mesh sieve to obtain a ceramic powder slurry;

[0044] SiC, Al used above 2 o 3 , SiO 2 And the mixture of CMC is calculated in parts by weight, and its consumption is as follows:

[0045] SiC87 parts

[0046] Al 2 o 3 10 copies

[0047] SiO 2 and CMC mixture 3 parts

[0048] 33 parts of water;

[0049] Of which SiO 2 and CMC mixture, by weight, SiO 2 : CMC is 5:4;

[0050] (2) Soak the polyurethane foam with a pore size distribution of 2-25 pores / cm in the ceramic powder slurry obtained in step (1), hang the slurry once every 30 minutes, and repeat the slurrying operation until the polyurethane foam after slurrying ...

Embodiment 3

[0054] A high-strength porous ceramic for air-conditioning is prepared by a method comprising the following steps:

[0055] (1) Preparation of ceramic powder slurry

[0056] SiC, Al 2 o 3 with SiO 2 After adding the mixture with CMC to water for mixing, control the rotation speed at 1200r / min for sand milling for 1 hour, and then pass through an 80-mesh sieve to obtain a ceramic powder slurry;

[0057] SiC, Al used above 2 o 3 , SiO 2 And the mixture of CMC is calculated in parts by weight, and its consumption is as follows:

[0058] SiC77 parts

[0059] al 2 o 3 20 copies

[0060] SiO 2 and CMC mixture 3 parts

[0061] 33 parts of water;

[0062] Of which SiO 2 and CMC mixture, by weight, SiO 2 : CMC is 4:4;

[0063] (2) Soak the polyurethane foam with a pore size distribution of 2-25 pores / cm in the ceramic powder slurry obtained in step (1), hang the slurry once every 30 minutes, and repeat the slurrying operation until the polyurethane foam after slurrying ...

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Abstract

The invention discloses an air conditioner use high strength porous ceramic and a preparation method thereof, the preparation method is as follows: adding a SiC, Al2O3, SiO2 and CMC (carboxymethylcellulose) mixture into water for mixing, grinding with sand for 1H in 1200R / min, then sieving with a 80 mesh sieve to obtain ceramic powder slurry; and soaking polyurethane foam with the pore size distribution of 2-25 holes / cm in the obtained ceramic powder slurry, hang the slurry 30min one time, repeating the hanging slurry operation until polyurethane foam weight no longer increases after hanging slurry, drying, sintering at 1300-1450 Deg. C for 2h to obtain the air conditioner use high strength porous ceramic with the porosity of 65-80% and the compressive strength of 2.1-3.7MPa, and the air conditioner use high strength porous ceramic has good resistance to large air flow, good stability and long service life, is suitable for a large air flow through air conditioner, and thereby greatly improving economic benefits and social benefits.

Description

technical field [0001] The invention belongs to the field of air purification, and relates to a high-strength porous ceramic for air conditioning and a preparation method thereof. Background technique [0002] In recent years, with the publicity of various aspects and the increase of people's popular science knowledge, the public has paid more and more attention to a series of pollution problems caused by interior decoration, so solving indoor environmental pollution has become one of the hot issues that researchers are concerned about. For improving air quality, people have developed some air purifying devices such as air purifiers such as negative ion formula and electronic dust collection formula. At present, the methods used for indoor purification mainly include adsorption technology, photocatalysis technology, low temperature plasma technology and catalytic oxidation technology. Adsorption technology mainly uses high specific surface materials such as activated carbon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/565C04B35/634C04B38/06
Inventor 房永征于圣洁张娜孙玉见
Owner SHANGHAI INST OF TECH
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