CN104402447A - Air conditioner use high strength porous ceramic and preparation method thereof - Google Patents
Air conditioner use high strength porous ceramic and preparation method thereof Download PDFInfo
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- CN104402447A CN104402447A CN201410641071.XA CN201410641071A CN104402447A CN 104402447 A CN104402447 A CN 104402447A CN 201410641071 A CN201410641071 A CN 201410641071A CN 104402447 A CN104402447 A CN 104402447A
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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
The invention belongs to air purification field, high intensity, porous pottery relating to a kind of idle call and preparation method thereof.
Background technology
In recent years, along with the publicity of each side and the increase of people's popular science knowledge, the public more and more paid attention to a series of pollution problems that interior decoration causes, and therefore solving indoor environmental pollution becomes one of hot issue that investigator pays close attention to.For improving Air quality, people develop the device of some purifying airs as the air purifier such as negative ion type, electronic dust-collecting type.Method at present for indoor purifying mainly contains adsorption technology, photocatalysis technology, lower temperature plasma technology and catalytic oxidation technologies.Adsorption technology mainly adopts the high-ratio surface such as gac and molecular sieve material to carry out formaldehyde adsorption, to reach the object purified air, but due to sorbing material limited sorption capacity, needs regular regeneration or replacing, easily produces secondary pollution.Comprise electronics, ion, oxygen activity species and excited state molecule etc. in the low-temperature plasma that under normal pressure, atmospherical discharges produces and have high chemically active species, the chemical bond of dusty gas molecule can be opened, the chemical reaction of a lot of overactivity energy is occurred, thus reaches the object of organic pollutant in process room air.But this technology easily produces the secondary pollutant such as oxynitride and ozone in process air discharge, so apply less at present in air purifier.Photocatalysis technology mainly utilizes nano-TiO
2as photocatalyst, by the effect of active hydrogen oxyradical and superoxide radical, at ambient temperature just can decomposing formaldehyde.Formaldehyde just can be decomposed into harmless H by heat catalytic oxidation technology at a lower temperature completely
2o and CO
2, thus catalysis technique has a good application prospect for purifying the air of a room.
Because photocatalyst or hot catalyst present body of powder solid or hot melt adhesive usually, therefore, need the carrier providing catalyst to adhere to.Current optical catalyst carrier has activated carbon felt, paper honeycomb, wire cloth etc., but these carriers are for strong not to adhesive force, and ultimate compression strength is low, therefore not resistance to Wind Volume, and work-ing life is short.
Summary of the invention
Object of the present invention provides a kind of adhesive ability strong to solve the technical problems such as above-mentioned carrier ultimate compression strength and resistance to Wind Volume character, there is good resistance to Wind Volume character, good stability, long service life, is applicable to high intensity, porous ceramic substrate of the idle call that Wind Volume passes through and preparation method thereof.
Technical scheme of the present invention
A high intensity, porous pottery for idle call, is prepared by a method comprising the following steps and forms:
(1), the preparation of ceramic powder slurry
By SiC, Al
2o
3with SiO
2join after water mixes with the mixture of CMC, controlling rotating speed is that 1200r/min carries out sand milling 1h, then crosses 80 mesh sieves, obtains ceramic powder slurry,
Above-mentioned SiC, Al used
2o
3, SiO
2calculate by weight with the mixture of CMC, its consumption is as follows:
SiC 67-90 part
Al
2o
35-30 part
SiO
2with mixture 1-5 part of CMC
Water 25-47 part;
Preferred above-mentioned SiC, Al used
2o
3, SiO
2calculate by weight with the mixture of CMC, its consumption is as follows:
SiC 67-87 part
Al
2o
310-30 part
SiO
2with mixture 3-4 part of CMC
Water 25-47 part;
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 1-5:4;
(2), by pore size distribution be 2-25 hole/centimetre polyurethane foam be immersed in the ceramic powder slurry of step (1) gained, every 30min hanging once, repetition hanging operates, until polyurethane foam weight no longer increases after hanging, after drying, at 1300-1450 DEG C, sinter 2h, obtain the high intensity, porous pottery of idle call.
After testing, its void content is 65-80% to the high intensity, porous pottery of the idle call of above-mentioned gained, and its ultimate compression strength is 2.1-3.7MPa.
Beneficial effect of the present invention
The high intensity, porous pottery of a kind of idle call of the present invention, owing to adopting organic impregnation method and selecting the softening temperature of flexible polyurethane foams low, thermal stress damage can be avoided in volatilization is got rid of, thus prevent the avalanche of base substrate, ensure that the intensity of the high intensity, porous pottery of the idle call of final gained, after testing, its void content is 65-80%, and ultimate compression strength is 2.1-3.7MPa.
Further, the high intensity, porous pottery of a kind of idle call of the present invention, because ultimate compression strength is high, therefore it has good resistance to Wind Volume character, good stability, long service life, be applicable to the air-conditioning use that Wind Volume passes through, thus substantially increase its economic benefit and social benefit.
Further, the preparation method of the high intensity, porous pottery of a kind of idle call of the present invention compares with prior art, and its preparation technology is simple, and preparation cost is low, is applicable to suitability for industrialized production.
Embodiment
Below by specific embodiment, the present invention is set forth further, but do not limit the present invention.
embodiment 1
A high intensity, porous pottery for idle call, is prepared by a method comprising the following steps and forms:
(1), the preparation of ceramic powder slurry
By SiC, Al
2o
3with SiO
2join after water mixes with the mixture of CMC, controlling rotating speed is that 1200r/min carries out sand milling 1h, then crosses 80 mesh sieves, obtains ceramic powder slurry;
Above-mentioned SiC, Al used
2o
3, SiO
2calculate by weight with the mixture of CMC, its consumption is as follows:
SiC 77 parts
Al
2o
320 parts
SiO
2with 3 parts, the mixture of CMC
47 parts, water;
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 1:4;
(2), by pore size distribution be 2-25 hole/centimetre polyurethane foam be immersed in the ceramic powder slurry of step (1) gained, every 30min hanging once, hanging operation in triplicate, polyurethane foam weight no longer increases, control temperature is 80 DEG C and carries out dry 6h, then control temperature is 1300 DEG C and carries out sintering 2h, obtains the high intensity, porous pottery of idle call.
According to GB/T1964-1996 standard, the high intensity, porous pottery of universal material experimental machine SUN500 to the idle call of above-mentioned gained is adopted to detect, the high intensity, porous pottery of the idle call of above-mentioned gained is detected, its ultimate compression strength is 2.7MPa, therefore may be used for ozone decomposition catalyst carrier to bear certain air quantity.
Adopt the high intensity, porous pottery of micrometrics poresizer 9320 mercury injection apparatus to the idle call of above-mentioned gained to measure void content, after testing, its void content is 70%.
embodiment 2
A high intensity, porous pottery for idle call, is prepared by a method comprising the following steps and forms:
(1), the preparation of ceramic powder slurry
By SiC, Al
2o
3with SiO
2join after water mixes with the mixture of CMC, controlling rotating speed is that 1200r/min carries out sand milling 1h, then crosses 80 mesh sieves, obtains ceramic powder slurry;
Above-mentioned SiC, Al used
2o
3, SiO
2calculate by weight with the mixture of CMC, its consumption is as follows:
SiC 87 parts
Al
2o
310 parts
SiO
2with 3 parts, the mixture of CMC
33 parts, water;
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 5:4;
(2), by pore size distribution be 2-25 hole/centimetre polyurethane foam be immersed in the ceramic powder slurry of step (1) gained, every 30min hanging once, repetition hanging operates, until polyurethane foam weight no longer increases after hanging, control temperature is 80 DEG C and carries out dry 6h, then control temperature is 1350 DEG C and carries out sintering 2h, obtains the high intensity, porous pottery of idle call.
According to GB/T1964-1996 standard, adopt the high intensity, porous pottery of universal material experimental machine SUN500 to the idle call of above-mentioned gained to detect, its ultimate compression strength is 2.1MPa;
Adopt the high intensity, porous pottery of micrometrics poresizer 9320 mercury injection apparatus to the idle call of above-mentioned gained to measure void content, after testing, its void content is 65%.
embodiment 3
A high intensity, porous pottery for idle call, is prepared by a method comprising the following steps and forms:
(1), the preparation of ceramic powder slurry
By SiC, Al
2o
3with SiO
2join after water mixes with the mixture of CMC, controlling rotating speed is that 1200r/min carries out sand milling 1h, then crosses 80 mesh sieves, obtains ceramic powder slurry;
Above-mentioned SiC, Al used
2o
3, SiO
2calculate by weight with the mixture of CMC, its consumption is as follows:
SiC 77 parts
Al
2o
320 parts
SiO
2with 3 parts, the mixture of CMC
33 parts, water;
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 4:4;
(2), by pore size distribution be 2-25 hole/centimetre polyurethane foam be immersed in the ceramic powder slurry of step (1) gained, every 30min hanging once, repetition hanging operates, until polyurethane foam weight no longer increases after hanging, control temperature is 80 DEG C and carries out dry 6h, then control temperature is 1450 DEG C and carries out sintering 2h, obtains the high intensity, porous pottery of idle call.
According to GB/T1964-1996 standard, adopt the high intensity, porous pottery of universal material experimental machine SUN500 to the idle call of above-mentioned gained to detect, its ultimate compression strength is 3.7MPa, therefore may be used for ozone decomposition catalyst carrier to bear certain air quantity.
Adopt the high intensity, porous pottery of micrometrics poresizer 9320 mercury injection apparatus to the idle call of above-mentioned gained to measure void content, after testing, its void content is 80%.
embodiment 4
A high intensity, porous pottery for idle call, is prepared by a method comprising the following steps and forms:
(1), the preparation of ceramic powder slurry
By SiC, Al
2o
3with SiO
2join after water mixes with the mixture of CMC, controlling rotating speed is that 1200r/min carries out sand milling 1h, then crosses 80 mesh sieves, obtains ceramic powder slurry;
Above-mentioned SiC, Al used
2o
3, SiO
2calculate by weight with the mixture of CMC, its consumption is as follows:
SiC 71 parts
Al
2o
325 parts
SiO
2with 4 parts, the mixture of CMC
33 parts, water;
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 5:4;
(2), by pore size distribution be 2-25 hole/centimetre polyurethane foam be immersed in the ceramic powder slurry of step (1) gained, every 30min hanging once, repetition hanging operates, until polyurethane foam weight no longer increases after hanging, control temperature is 80 DEG C and carries out dry 6h, then control temperature is 1450 DEG C and carries out sintering 2h, obtains the high intensity, porous pottery of idle call.
According to GB/T1964-1996 standard, adopt the high intensity, porous pottery of universal material experimental machine SUN500 to the idle call of above-mentioned gained to detect, its ultimate compression strength is 3.1MPa, therefore may be used for ozone decomposition catalyst carrier to bear certain air quantity.
Adopt the high intensity, porous pottery of micrometrics poresizer 9320 mercury injection apparatus to the idle call of above-mentioned gained to measure void content, after testing, its void content is 75%.
embodiment 5
A high intensity, porous pottery for idle call, is prepared by a method comprising the following steps and forms:
(1), the preparation of ceramic powder slurry
By SiC, Al
2o
3with SiO
2join after water mixes with the mixture of CMC, controlling rotating speed is that 1200r/min carries out sand milling 1h, then crosses 80 mesh sieves, obtains ceramic powder slurry;
Above-mentioned SiC, Al used
2o
3, SiO
2calculate by weight with the mixture of CMC, its consumption is as follows:
SiC 67 parts
Al
2o
330 parts
SiO
2with 3 parts, the mixture of CMC
25 parts, water;
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 3:4;
(2), by pore size distribution be 2-25 hole/centimetre polyurethane foam be immersed in the ceramic powder slurry of step (1) gained, every 30min hanging once, repetition hanging operates, until polyurethane foam weight no longer increases after hanging, control temperature is 80 DEG C and carries out dry 6h, then control temperature is 1450 DEG C and carries out sintering 2h, obtains high intensity, porous pottery.
According to GB/T1964-1996 standard, adopt the high intensity, porous pottery of universal material experimental machine SUN500 to the idle call of above-mentioned gained to detect, its ultimate compression strength is 3.0MPa, therefore may be used for ozone decomposition catalyst carrier to bear certain air quantity.
Adopt the high intensity, porous pottery of micrometrics poresizer 9320 mercury injection apparatus to the idle call of above-mentioned gained to measure void content, after testing, its void content is 72%.
In sum, the high intensity, porous pottery of a kind of idle call of the present invention, its void content is 65-80%, and its ultimate compression strength is 2.1-3.7MPa.
The above is only the citing of embodiments of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (8)
1. a preparation method for the high intensity, porous pottery of idle call, is characterized in that specifically comprising the steps:
(1), the preparation of ceramic powder slurry
By SiC, Al
2o
3with SiO
2join after water mixes with the mixture of CMC, controlling rotating speed is that 1200r/min carries out sand milling 1h, then crosses 80 mesh sieves, obtains ceramic powder slurry;
Above-mentioned SiC, Al used
2o
3, SiO
2calculate by weight with the mixture of CMC, its consumption is as follows:
SiC 67-90 part
Al
2o
35-30 part
SiO
2with mixture 1-5 part of CMC
Water 25-47 part;
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 1-5:4;
(2), by pore size distribution be 2-25 hole/centimetre polyurethane foam be immersed in the ceramic powder slurry of step (1) gained, every 30min hanging once, repetition hanging operates, until polyurethane foam weight no longer increases after hanging, after drying, at 1300-1450 DEG C, sinter 2h, obtain the high intensity, porous pottery of idle call.
2. the preparation method of the high intensity, porous pottery of a kind of idle call as claimed in claim 1, is characterized in that SiC, Al used in preparation process step (1)
2o
3, SiO
2calculate by weight with the mixture of CMC, its consumption is as follows:
SiC 67-87 part
Al
2o
310-30 part
SiO
2with mixture 3-4 part of CMC
Water 25-47 part.
3. the preparation method of the high intensity, porous pottery of a kind of idle call as claimed in claim 2, is characterized in that SiC, Al used in preparation process step (1)
2o
3, SiO
2calculate by weight with the mixture of CMC, its consumption is as follows:
SiC 77 parts
Al
2o
320 parts
SiO
2with 3 parts, the mixture of CMC
25 parts, water
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 1:4;
Sintering temperature described in step (2) is 1300 DEG C.
4. the preparation method of the high intensity, porous pottery of a kind of idle call as claimed in claim 2, is characterized in that SiC, Al used in preparation process step (1)
2o
3, SiO
2with the mixture of CMC and the amount of water, calculate by weight, its consumption is as follows:
SiC 87 parts
Al
2o
310 parts
SiO
2with 3 parts, the mixture of CMC
47 parts, water
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 5:4;
Sintering temperature described in step (2) is 1350 DEG C.
5. the preparation method of the high intensity, porous pottery of a kind of idle call as claimed in claim 2, is characterized in that SiC, Al used in preparation process step (1)
2o
3, SiO
2with the mixture of CMC and the amount of water, calculate by weight, its consumption is as follows:
SiC 77 parts
Al
2o
320 parts
SiO
2with 3 parts, the mixture of CMC
33 parts, water
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 4:4;
Sintering temperature described in step (2) is 1450 DEG C.
6. the preparation method of the high intensity, porous pottery of a kind of idle call as claimed in claim 2, is characterized in that SiC, Al used in preparation process step (1)
2o
3, SiO
2with the mixture of CMC and the amount of water, calculate by weight, its consumption is as follows:
SiC 71 parts
Al
2o
325 parts
SiO
2with 4 parts, the mixture of CMC
25 parts, water
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 5:4;
Sintering temperature described in step (2) is 1450 DEG C.
7. the preparation method of the high intensity, porous pottery of a kind of idle call as claimed in claim 2, is characterized in that SiC, Al used in preparation process step (1)
2o
3, SiO
2mixture with CMC, calculates by weight, and its consumption is as follows:
SiC 67 parts
Al
2o
330 parts
SiO
2with 3 parts, the mixture of CMC
25 parts, water
Wherein SiO
2with the mixture of CMC, by weight calculating, SiO
2: CMC is 3:4;
Sintering temperature described in step (2) is 1450 DEG C.
8. the high intensity, porous pottery of a kind of idle call of the preparation method's gained as described in as arbitrary in claim 1-7.
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Cited By (3)
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| CN107285743A (en) * | 2016-03-30 | 2017-10-24 | 宝山钢铁股份有限公司 | A kind of method that discarded magnesia prepares porous ceramics |
| CN110935237A (en) * | 2019-11-18 | 2020-03-31 | 武汉科技大学 | Hierarchical pore silicon carbide porous ceramic for filtering high-temperature flue gas and preparation method thereof |
| CN113307629A (en) * | 2021-07-05 | 2021-08-27 | 厦门大学 | Silicon carbide foamed ceramic and preparation method thereof |
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| CN113307629A (en) * | 2021-07-05 | 2021-08-27 | 厦门大学 | Silicon carbide foamed ceramic and preparation method thereof |
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| Publication number | Publication date |
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| CN104402447B (en) | 2016-06-08 |
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