CN1052370C - Inorganic oxide electric heating film and the manufacture thereof - Google Patents
Inorganic oxide electric heating film and the manufacture thereof Download PDFInfo
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- CN1052370C CN1052370C CN96103260A CN96103260A CN1052370C CN 1052370 C CN1052370 C CN 1052370C CN 96103260 A CN96103260 A CN 96103260A CN 96103260 A CN96103260 A CN 96103260A CN 1052370 C CN1052370 C CN 1052370C
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- electric
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- heating
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- thin film
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Abstract
The present invention relates to inorganic oxide electrothermal film of which the weight proportion of the components comprises 78 to 90 percent of tin oxide, 3 to 15 percent of antimony oxide, 3 to 8 percent of boron oxide and 2 to 5 percent of iron oxide. In the preparation method of the present invention, corresponding soluble matters of oxides are dissolved in ethanol, by using the vapor phase growth method, the oxides are caused to grow on an insulation and heat resistance bottom plate to form the electric heating film. Traditional heating wires can be replaced by the film to make ultra-light, ultra-thin, and ultra-small electric heating elements. The present invention has the obvious advantages of low cost, long service life, quick heating up, high efficiency and temperature, moisture, wear, corrosion and aging resistance, and besides, the working temperature reaches up to 600 DEG C, etc.
Description
The present invention relates to electrothermal component, more particularly, relate to inorganic oxide electric heating film and method for making thereof.
Electric heating appliance is existing more than 100 year history since it comes out, and it is heater that its electric heating element adopts heating wire usually.Electric heating appliance is easy to use with it, sanitation and hygiene and the advantage that do not pollute and quite popular to people.But there is following shortcoming in general electric heating appliance: (1) heat efficiency is low, and (heat efficiency of open type electric furnace has only 42-50%; The heat efficiency of electric cooker is 70-72%); (2) cost height (nichrome wire per kilogram 300-380 unit, but also must be furnished with high temperature resistant accessories such as electric furnace pan, mica sheet, asbestos board, electric heating system complex structure); (3) useful life short (heating wire all directly is exposed in the air usually, and during use, heating wire is in the red heat state more than 800 ℃, therefore very easy oxidation by air).At the existing above-mentioned shortcoming of heating wire mode of heating, as far back as early fifties, propose to adopt the conception of electro-thermal coatings in the world as electric heating body, but so far because the semi-conducting material that the coating material majority is to use gold, silver, platinum and other precious metal materials or indium oxide, tin oxide and indium tin oxide etc. to mix, technological requirement height, equipment complexity and cost are too high, thereby make the application of electro-thermal coatings only limit to national defence, frontiers of science and technology such as space flight, aviation.In addition, microwave oven that development in recent years is got up and electromagnetic stove have overcome the not high shortcoming of the heating wire heat efficiency, make the heat efficiency be increased to 80-85%, but its cost and price are quite high, belong to high price electric heating appliance class, are difficult to accept for the wage-earners and the broad masses of low income.
Therefore, the objective of the invention is to provide a kind of and have sanitation and hygiene simultaneously, do not pollute, heat efficiency height, cost is low and the new electrically heating film of multiple advantage such as long service life and preparation method thereof.
The inventor found that, by tin oxide, (SnO through experiment many times
2), antimony oxide (Sb
2O
3), boron oxide (B
2O
3) and these four kinds of oxides of iron oxide (FeO) can achieve the above object by the film that the special ratios scope forms.In addition,, can make manufacturing process become more simple if adopt the volatilizable compound of above-mentioned four kinds of elements to prepare this inorganic oxide electric heating film by the chemical vapor-phase growing method, because this discovery, thereby the present invention finished.
Technical scheme of the present invention is constructed as follows:
(1) a kind of inorganic oxide electric heating film is characterized in that, it contains following ingredients (weight portion):
Composition weight portion tin oxide (SnO
2) 78-90 antimony oxide (Sb
2O
3) 3-15 boron oxide (B
2O
3) 3-8 iron oxide (FeO) 2-5
As above-mentioned (1) described inorganic oxide electric heating film, it is characterized in that (2) thickness of this film is 0.05 μ m-1.0 μ m.
(3) as above-mentioned (1) or (2) described inorganic oxide electric heating film, it is characterized in that the thickness of this film is 0.1 μ m-0.5 μ m.
(4) method of above-mentioned (1) the described inorganic oxide electric heating film of preparation is characterized in that, takes by weighing the butter of tin (SnCl that is equivalent to tin oxide 78-90 weight portion
4), be equivalent to the trichloride antimony (SbCl of antimony oxide 3-15 weight portion
3), be equivalent to the boric acid (H of boron oxide 3-8 weight portion
3BO
3) and be equivalent to the ferric trichloride (FeCl of iron oxide 2-5 weight portion
3), they are dissolved in make ethanolic solution in the ethanol, this solution is injected in the inert material evaporating dish, then this evaporating dish is placed on the vapour source heating station in the chemical vapour phase growth stove and evaporates, the temperature of this vapour source heating station is controlled at 200-300 ℃, temperature is controlled at 450-650 ℃ in the stove, to be fixed on the fixed mount and place the top of evaporating dish through the pretreated heat-resisting electric insulation ground of insulation, when treating that this evaporating dish has steam to produce, rotate this ground by rotating the ground fixed mount, so vapor-grown is to till generating the electric-heating thin film of desired thickness on this surface of bottom material.
As above-mentioned (4) described method, it is characterized in that (5) wherein said heat-resisting electric insulation ground is a pottery.
As above-mentioned (4) described method, it is characterized in that (6) wherein said heat-resisting electric insulation ground is a glass.
As above-mentioned (4) described method, it is characterized in that (7) wherein said heat-resisting electric insulation ground is quartzy.
As above-mentioned (4) described method, it is characterized in that (8) wherein said heat-resisting electric insulation ground is an enamel.
As above-mentioned (4) described method, it is characterized in that (9), in the end form in the step of electric-heating thin film that vapor-grown is to till generating the thick electric-heating thin film of 0.05-1.0 μ m on the said surface of bottom material.
As above-mentioned (4) or (9) described method, it is characterized in that (10), in the end form in the step of electric-heating thin film that vapor-grown is to till generating the thick electric-heating thin film of 0.1-0.5 μ m on the said surface of bottom material.
Above-mentioned (1) and (4) is all the necessary technology feature, and all the other everyly are all technical characterictic additional or that further limit.At length explain the present invention below.
In inorganic oxide electric heating film of the present invention, each component role is as follows:
Tin oxide (SnO
2): the framework material of electric-heating thin film;
Antimony oxide (Sb
2O
3): dopant, the main component of foot decision electric-heating thin film conductivity;
Boron oxide (B
2O
3): brilliant sleever armpit part stabilizer, if do not add boron oxide, the heatproof upper limit＜450 of the electric-heating thin film that obtains ℃, and if add the boron oxide of above-mentioned amount, then the heatproof upper limit can reach＞600 ℃;
Iron oxide (FeO): the lattice filler, be used to fill up lattice defect, improve the fineness and the transparency of electric-heating thin film, help to improve the stability (comprising chemical stability and thermal stability) of electric-heating thin film.
In electric-heating thin film of the present invention, its thickness is provided with strict restriction, and thickness and resistance are roughly inversely proportional, and film is thick more, and its resistance is more little.Usually, its resistance calculates with square resistance, and its preferred resistance is 500 Ω/-2.5 Ω/, and at this moment corresponding electric-heating thin film thickness is 0.05 μ m.-1.0 μ m, 250 Ω/-5 Ω/ more preferably, at this moment corresponding electric-heating thin film thickness 0.1 μ m-0.5 μ m.
In addition, in preparing the method for electric-heating thin film of the present invention, the material category of used heat-resisting electric insulation ground is not particularly limited, if the heat-resisting and electric insulation of energy, but it is several wherein to be preferably pottery, heat resistant glass, quartz, enamel etc.
Compare with the electrothermal component of prior art, first machine oxide electric heating film of the present invention has following advantage:
1, heat efficiency height reaches more than 80%;
2, working temperature can be up to more than 600 ℃;
3, all component all belongs to inorganic material, and heatproof, moisture-proof, wear-resisting, not aging combine firmly with ground, never drop-off, and working life reached more than 20000 hours;
4, acid-alkali-corrosive-resisting can be used for preparing the electric heating appliance that uses in the strong adverse circumstances of corrosivity;
5, can combine with the far-infrared electric material, prepare various far-infrared heating elements;
6, all raw material all belong to the general industry raw material, and are cheap;
7, consumable material seldom, every square decimeter of coating consumptive material only is 0.02-0.03g.
8, simple, the good manufacturability of equipment is suitable for producing in enormous quantities.
Further explain the present invention below in conjunction with preferred embodiment and accompanying drawing thereof.Wherein:
Fig. 1 is a kind of front view that comprises the flat electric-heating thin film element of inorganic oxide electric heating film of the present invention;
Fig. 2 is the sectional view of element shown in Figure 1.
In Fig. 2: the 1st, be used to carry the base plate of electric-heating thin film; The 2nd, inorganic oxide electric heating film of the present invention; The 3rd, thin layer electrode.
Embodiment 1
Prepare the rectangular ceramic sheet of a block length 120mm, wide 80mm, thick 6mm, with it as base plate shown in Figure 21.
In addition, take by weighing 292.2g butter of tin (SnCl
4), 15g trichloride antimony (SbCl
3), 17.8g boric acid (H
3BO
3) and 13.6g ferric trichloride (FeCl
3).(they finally generate 169gSnO
2, 9.6gSb
2O
3, 10.0gB
2O
3And 6.0gFeO) with the SnCl that takes by weighing
4, SbCl
3, H
3BO
3And FeCl
3Be dissolved in the 205g ethanol, make the ethanolic solution of clarification.
Get the ethanolic solution injection porcelain evaporating dishes that 10g prepares, place it on the vapour source heating station of chemical gaseous phase stove, the temperature of vapour source heating station is controlled at 230 ± 10 ℃, temperature is controlled at 500 ± 10 ℃ in the stove, be fixed in above-mentioned rectangular ceramic base plate on the fixed mount and place the top of evaporating dish, when treating that this evaporating dish has steam to produce, rotate this ceramic bottom board to reach uniform vapor phase growth by rotating the ground fixed mount, after 12 minutes, the solution in the evaporating dish all evaporation is clean.At this moment, on this ceramic bottom board, generated the layer of even film.The side 1 that records this film with the resistance instrument to the room temperature to be cooled] resistance is 15 Ω/.This is the inorganic oxide electric heating film of 2 indications among Fig. 2.Its thickness is equivalent to 0.3 μ m.
Press two minor faces along this rectangular base plate illustrated in figures 1 and 2 with a kind of commercially available silver conductive adhesive then, on electric-heating thin film, respectively coat a long 80mm, the thin layer electrode of wide 10mm.This is the thin layer electrode of 3 indications among Fig. 2.
With this thin layer electrode oven dry, between two electrodes, apply the 200V alternating voltage then, the plate surface temperature is reached more than 120 ℃, thermal equilibrium temperature is more than 180 ℃.
Should illustrate, though in the present embodiment the temperature of vapour source heating station is controlled at 230 ± 10 ℃ and temperature in the stove is controlled at 500 ± 10 ℃, but, through experiment confirm, only need temperature with vapour source heating station be controlled in the scope that is controlled at 450-650 ℃ in 200-300 ℃ the scope and with temperature in the stove and can reach purpose of the present invention.
In embodiment 2 and 3, the ceramic wafer in using heat resistant glass and enamel replacement embodiment 1 respectively is as the ground, and other all experimentize by the condition of embodiment 1, have obtained the identical basically result with embodiment 1.
Should illustrate that inorganic oxide electric heating film of the present invention is not limited to tabular, it can also make different shapes such as tubulose, semicircle shape, is specially adapted to make various home-use heaters, for example chafing dish, pot for cooking rice, saucepan, water heater or the like.And, because the power output of this electric-heating thin film can be regulated by input voltage simply, therefore also can make multi-functional heating appliances, for example make a kind of three-in-one heating kettle that has chafing dish, pot for cooking rice, three kinds of functions of saucepan simultaneously, use very convenient.Those skilled in the art can make many variations to the foregoing description in design of the present invention and claim institute restricted portion, yet all these variations all considered to be in the scope of the present invention.
Claims (10)
1, a kind of inorganic oxide electric heating film is characterized in that, it contains following ingredients, weight portion:
The composition weight portion
Tin oxide SnO
278-90
Antimony oxide Sb
2O
33-15
Boron oxide B
2O
33-8
Iron oxide FeO 2-5
2, inorganic oxide electric heating film as claimed in claim 1 is characterized in that, the thickness of this film is 0.05 μ m-1.0 μ m.
3, inorganic oxide electric heating film as claimed in claim 1 or 2 is characterized in that, the thickness of this film is 0.1 μ m-0.5 μ m.
4, the method for preparation inorganic oxide electric heating film as claimed in claim 1 is characterized in that, takes by weighing the butter of tin SnCl that is equivalent to tin oxide 78-90 weight portion
4, be equivalent to the trichloride antimony SbCl of antimony oxide 3-15 weight portion
3, be equivalent to the boric acid H of boron oxide 3-8 weight portion
3BO
3With the ferric trichloride FcCl that is equivalent to iron oxide 2-5 weight portion
3They are dissolved in make ethanolic solution in the ethanol, this solution is injected in the inert material evaporating dish, then this evaporating dish is placed on the vapour source heating station in the chemical vapour phase growth stove and evaporates, the temperature of this vapour source heating station is controlled at 200-300 ℃, temperature is controlled at 450-650 ℃ in the stove, to be fixed on the fixed mount and place the top of evaporating dish through the pretreated heat-resisting electric insulation ground of insulation, when treating that this evaporating dish has steam to produce, rotate this ground by rotating the ground fixed mount, so vapor-grown is to till generating the electric-heating thin film of desired thickness on this surface of bottom material.
5, method as claimed in claim 4 is characterized in that, wherein said heat-resisting electric insulation ground is a pottery.
6, method as claimed in claim 4 is characterized in that, wherein said heat-resisting electric insulation ground is a glass.
7, method as claimed in claim 4 is characterized in that, wherein said heat-resisting electric insulation ground is quartzy.
8, method as claimed in claim 4 is characterized in that, wherein said heat-resisting electric insulation ground is an enamel.
9, method as claimed in claim 4 is characterized in that, in the end forms in the step of electric-heating thin film, and vapor-grown is to till generating the thick electric-heating thin film of 0.05-1.0 μ m on the said surface of bottom material.
As claim 4 or 9 described methods, it is characterized in that 10,, in the end form in the step of electric-heating thin film that vapor-grown is to till generating the thick electric-heating thin film of 0.1-0.5 μ m on the said surface of bottom material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96103260A CN1052370C (en) | 1996-03-12 | 1996-03-12 | Inorganic oxide electric heating film and the manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96103260A CN1052370C (en) | 1996-03-12 | 1996-03-12 | Inorganic oxide electric heating film and the manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1136263A CN1136263A (en) | 1996-11-20 |
| CN1052370C true CN1052370C (en) | 2000-05-10 |
Family
ID=5117943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96103260A Expired - Fee Related CN1052370C (en) | 1996-03-12 | 1996-03-12 | Inorganic oxide electric heating film and the manufacture thereof |
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| Country | Link |
|---|---|
| CN (1) | CN1052370C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426936C (en) * | 2003-12-02 | 2008-10-15 | 北京明盛电通能源新技术有限公司 | High-temp. high-efficiency multifunction inorganic electrothermal film and manufacturing method thereof |
| CN105192103A (en) * | 2014-06-03 | 2015-12-30 | 汇力恒通（厦门）远红外科技有限公司 | Portable tea fragrance improver |
| CN104327554A (en) * | 2014-11-20 | 2015-02-04 | 威海东方润德新材料有限公司 | Electric heating paint |
| CN104888762A (en) * | 2015-06-16 | 2015-09-09 | 崔成哲 | Semiconductor nano-catalyst for desulfurization and denitrification of flue gas and preparation method of semiconductor nano-catalyst |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85201039U (en) * | 1985-04-01 | 1986-01-01 | 青海省太阳能研究所 | Heating utensil with conductive thin film |
| CN1072700A (en) * | 1991-11-22 | 1993-06-02 | 尹维平 | A kind of thin-thick film compound electro-thermal coatings |
| CN1074579A (en) * | 1992-12-11 | 1993-07-21 | 戴金利 | A kind of semiconductor electric-heating thin film and processing method thereof |
-
1996
- 1996-03-12 CN CN96103260A patent/CN1052370C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85201039U (en) * | 1985-04-01 | 1986-01-01 | 青海省太阳能研究所 | Heating utensil with conductive thin film |
| CN1072700A (en) * | 1991-11-22 | 1993-06-02 | 尹维平 | A kind of thin-thick film compound electro-thermal coatings |
| CN1074579A (en) * | 1992-12-11 | 1993-07-21 | 戴金利 | A kind of semiconductor electric-heating thin film and processing method thereof |
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| Publication number | Publication date |
|---|---|
| CN1136263A (en) | 1996-11-20 |
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