CN101215169B - Method for preparing infrared ceramic material - Google Patents
Method for preparing infrared ceramic material Download PDFInfo
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- CN101215169B CN101215169B CN2008100024640A CN200810002464A CN101215169B CN 101215169 B CN101215169 B CN 101215169B CN 2008100024640 A CN2008100024640 A CN 2008100024640A CN 200810002464 A CN200810002464 A CN 200810002464A CN 101215169 B CN101215169 B CN 101215169B
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Abstract
The invention discloses a process for preparing far infrared powder materials. By dissolving metal nitrate in water solution of organic matter and charging the metal nitrate in the process of preparing materials, raw material can be uniformly dispersed and increased by plasticity. The specific preparation process is to disperse the metal nitrate in the water solution of organic matter, then, a mixed solution is obtained, adding the mixed solution in batching of the far infrared powder, then, the effective far infrared powder materials are obtained via the procedure of mixing, dehydrating, shaping, drying and sintering. The metal nitrate can be replaced by sulphate, halide or acetate. The invention directly disperses metal salt in ceramic billet by the organic matter, which can enable the raw materials to disperse uniformly, infrared emittance of the product can be improved after being sintered at high temperature, simultaneously, plasticity of preform body can be increased, dry strength of billet can be strengthened and rate of finished products can be improved. The invention doesn't need special equipment and is simple in technique, which is in favor of commercial process of ceramics.
Description
Technical field
The invention belongs to the infrared radiant material technical field, particularly a kind of preparation method of far-infrared ceramic material.
Background technology
Infrared Heating all is absolutely necessary for each department of national economy with dry.According to estimates, the energy expenditure of one of dry materials only accounts for the 10%-15% of developed country's fuel consumption.Therefore, vigorously advocating under the situation of energy-saving and emission-reduction facing worldwide energy-conservation and China at present, developing heat drying technology efficiently, development and national economy is had crucial meaning.
Infrared radiation ceramic is meant the inorganic materials that has high emissivity or feature emittance at infrared band.Infrared Heating and drying are exactly to utilize many materials to be easy to absorb ultrared characteristics, change heat energy into infrared energy by infrared radiation ceramic, direct radiation causes molecular resonance to heating object, heat up rapidly, thereby reach rapid heating and exsiccant purpose.Therefore, it has that thermo-efficiency height, energy consumption are little, good product quality and take up an area of characteristics such as few is dried.Along with the development of infrared radiation ceramic heater and infrared radiation coating and technical equipment, in as production fields such as baking finish industry, textile industry, printing industry, plastic industry, building material industry, metal industry, rubber industry, agriculturals, used.
The essence of ir radiation technical development is exactly to study the ir radiation that obtains sufficient intensity, its core is the material of development high radiant rate, Chinese patent [90102915] discloses a kind of polycrystalline mineralising black ceramic far-infrared radiation emissive material, it is characterized in that by one or more are formed in chromite, ilmenite, the zircon sand raw mineral materials, or by two or more is aided with 10% (weight) industrial chemicals and forms in these three kinds of raw mineral materialss of 90% (weight).Infrared emittance can reach 0.90, but Chinese patent [92100843] points out that its raw material mixes that back plasticity is poor, far from each other with former base behind the sintering, becomes the scum dress; Chinese patent [92100843] and United States Patent (USP) [3585390] provide a kind of infrared radiant material, in the powder raw material based on zircon sand, add metal oxides such as ferric oxide, chromic oxide, cobalt oxide, add clay again, obtain ceramic product through moulding, sintering, greater than the wave band of 5 μ m higher emissivity is arranged at wavelength, shortcoming is that oxide compound is difficult for being uniformly dispersed with other blanks, and the interpolation of excessive clay has reduced infrared emittance; Existing high emissivity infra-red material mostly is oxide compound after 1100-1200 ℃ of temperature lower calcination, fragmentation, add in the systems such as trichroite, mullite and obtain composite ceramics, can obtain the high radiant rate pottery, shortcoming is an oxidesintering temperature height, broken difficulty, be difficult to mix with other raw materials, and complex process.In all kinds of ceramic preparation process, often be added with organic additive and improve the plasticity-of blank and the intensity of base substrate, but only be in order to improve the performance of blank.
Summary of the invention
The present invention directly is distributed to metal-salt in the ceramic body by organism, raw material is uniformly dispersed, can improve the goods infrared emittance through high temperature sintering, organic interpolation simultaneously can increase blank plasticity-, be easy to plastic molding, strengthen the dry tenacity of the back base substrate that is shaped, improve yield rate, promptly playing raw material is uniformly dispersed, increase the dual function of plasticity, can effectively solve above-mentioned ceramic body difficult forming, problems such as raw material pre-sinter process complexity.
Concrete steps of the present invention are:
(1) is that 5～50% metal nitrate dissolves, mixes with the quality percentage composition, joins in the aqueous organic that organic add-on is 0.1～20% of an above-mentioned substance quality, stirs 0.5～2 hour in water;
(2) be that in 50～95% zirconium silicate, trichroite, mullite, ilmenite, chromite and the silicon carbide one or more mix with step (1) gained material and quality percentage composition, obtain mixture, the clay that adds the quality percentage composition and be mixture quality 5～30% mixes, and ball milling mixes;
(3) with step (2) gained material through dehydration, pugging, old after, repressed or plastic molding becomes lamp shape, tubulose, tabular etc., in 60～80 ℃ of bakings 2～12 hours, 120 ℃ of oven dry were 12～48 hours then in air;
(4) with step (3) gained material in silicon molybdenum stove in 1150～1400 ℃ the insulation 0.5～3 hour sintering, furnace cooling can obtain far-infrared ceramic.
Above-mentioned metal nitrate be Mn, Fe, Co, Ni, Cu, Cr, Ti, Al, Zr, Mg in the nitrate of one or more metals, metal nitrate can use vitriol, halogenide or acetate to substitute; Above-mentioned organism is starch, polyvinyl alcohol and other organism water-soluble or hot water.
The present invention adopts general industry equipment, and technology is simple, helps ceramic industry production; Not only significantly increase the plasticity of blank, the dry tenacity of the back base substrate that is shaped improves yield rate, can effectively improve infrared emittance simultaneously.
Embodiment
Embodiment 1:
(1) 10g iron nitrate, manganous nitrate, Xiao Suangu are pressed ferric oxide, manganese oxide, 8: 1.5: 0.5 proportionings of cobalt oxide mass ratio, dissolving in water, mixed, join in the aqueous solution of polyvinyl alcohol of 0.3g, with magnetic stirrer 0.5 hour;
(2) with (1) gained material and 60g zirconium silicate, the 10g ilmenite, 20g clay ball milling mixed in 2 hours;
(3) with back old 24 hours of (2) gained material dehydration, become tabular through plastic molding, 70 ℃ were dried by the fire 4 hours in baking oven, dried 24 hours for 120 ℃ then;
(4) just (3) gained material places silicon molybdenum stove, 2 hours sintering of 1300 ℃ of insulations, and furnace cooling can obtain infrared ceramic material.
Embodiment 2:
(1) 10g iron nitrate, chromium nitrate, nickelous nitrate are pressed ferric oxide, chromic oxide, 6: 2: 2 proportionings of cobalt oxide mass ratio, dissolving in water, mixed, join in the aqueous solution of polyvinyl alcohol of 0.1g, with magnetic stirrer 1 hour;
(2) with (1) gained material and 50g zirconium silicate, 10g clay ball milling 2h mixes;
(3) with back old 24 hours of (2) gained material dehydration, through plastic molding, 80 ℃ were dried by the fire 2～4 hours in baking oven, dried 24 hours for 120 ℃ then;
(4) (3) gained material is placed silicon molybdenum stove, 2 hours sintering of 1250 ℃ of insulations, furnace cooling can obtain infrared ceramic material.
Claims (1)
1. the preparation method of a far-infrared ceramic material, its feature is that mainly concrete steps are:
(1) is that 5～50% metal nitrate dissolves, mixes with the quality percentage composition, joins in the aqueous solution of polyvinyl alcohol that the add-on of polyvinyl alcohol is 0.1～20% of an above-mentioned substance quality, stirs 0.5～2 hour in water; Described metal nitrate is the nitrate of one or more metals among Mn, Fe, Co, Ni, Cu, Cr, Ti, Al, Zr, the Mg;
(2) be that in 50～95% zirconium silicate, trichroite, mullite, ilmenite, chromite and the silicon carbide one or more mix with step (1) gained material and quality percentage composition, obtain mixture, the clay that adds the quality percentage composition and be mixture quality 5～30% mixes, and ball milling mixes;
(3) with step (2) gained material through the dehydration, pugging, old after, repressed or plastic molding becomes lamp shape, tubulose or tabular, in air in 60～80 ℃ the baking 2～12 hours, then 120 ℃ the oven dry 12～48 hours;
(4) step (3) gained material is incubated 0.5～3 hour sintering, furnace cooling, acquisition far-infrared ceramic in 1150～1400 ℃ in silicon molybdenum stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100024640A CN101215169B (en) | 2008-01-01 | 2008-01-01 | Method for preparing infrared ceramic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100024640A CN101215169B (en) | 2008-01-01 | 2008-01-01 | Method for preparing infrared ceramic material |
Publications (2)
| Publication Number | Publication Date |
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| CN101215169A CN101215169A (en) | 2008-07-09 |
| CN101215169B true CN101215169B (en) | 2010-12-08 |
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| CN2008100024640A Expired - Fee Related CN101215169B (en) | 2008-01-01 | 2008-01-01 | Method for preparing infrared ceramic material |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609877A (en) * | 2015-02-11 | 2015-05-13 | 广州百煜新生化科技有限公司 | Infrared ceramic body and infrared health physiotherapy instrument thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053784A (en) * | 1991-03-23 | 1991-08-14 | 李冬绮 | Far-infrared ceramic and manufacture method thereof |
| CN1394828A (en) * | 2002-08-19 | 2003-02-05 | 石油大学(华东) | Preparation of low-temp. far infrared ceramic material |
| CN1911858A (en) * | 2006-08-21 | 2007-02-14 | 朱心江 | All case nanometer high energy composite ceramic and its preparation method |
-
2008
- 2008-01-01 CN CN2008100024640A patent/CN101215169B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053784A (en) * | 1991-03-23 | 1991-08-14 | 李冬绮 | Far-infrared ceramic and manufacture method thereof |
| CN1394828A (en) * | 2002-08-19 | 2003-02-05 | 石油大学(华东) | Preparation of low-temp. far infrared ceramic material |
| CN1911858A (en) * | 2006-08-21 | 2007-02-14 | 朱心江 | All case nanometer high energy composite ceramic and its preparation method |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2003-112962A 2003.04.18 |
| 宋宪瑞等.TiO2-莫来石远红外陶瓷的研究.《稀有金属材料与工程》.2007,第36卷471-473. * |
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| CN101215169A (en) | 2008-07-09 |
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Owner name: GUILIN UNIVERSITY OF TECHNOLOGY Free format text: FORMER NAME: GUILIN INSTITUTE OF TECHNOLOGY |
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Address after: 541004 Guilin city of Guangxi Road No. 12 building of Guilin University of Technology Patentee after: Guilin University of Technology Address before: 541004 Guilin city of the Guangxi Zhuang Autonomous Region Road No. 12 building of Guilin University of Technology Patentee before: Guilin University of Technology |
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Application publication date: 20080709 Assignee: Hubei Lianfeixiang Automobile Technology Co.,Ltd. Assignor: Guilin University of Technology Contract record no.: 2012420000111 Denomination of invention: Method for preparing infrared ceramic material Granted publication date: 20101208 License type: Exclusive License Record date: 20120821 |
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