CN2053418U - Binding-type electrically exothermic body - Google Patents
Binding-type electrically exothermic body Download PDFInfo
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- CN2053418U CN2053418U CN 89201551 CN89201551U CN2053418U CN 2053418 U CN2053418 U CN 2053418U CN 89201551 CN89201551 CN 89201551 CN 89201551 U CN89201551 U CN 89201551U CN 2053418 U CN2053418 U CN 2053418U
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Abstract
The utility model discloses a binding-typed electric heating body, relating to the improvement of the manufacturing technology of electric heating membranes, electric heating blocks and insulation layers. The device is composed of a substrate, one layer or multiple layers of insulation layers, one layer or multiple layers of electric heating membranes or electric heating blocks and conducting electrodes. The device is characterized in that the insulating layers are made of binding-typed insulation complex materials and the electric heating membranes or the electric heating blocks are made of binding-typed conducting complex materials. The electric heating body can be dried and solidified under a lower temperature to avoid sintering operations and has the advantages of simplified process, stable production quality, high production rate, excellent electric performance and low energy consumption, and therefore, the device is suitable for various kinds of electric heating apparatuses, electric heating equipment and apparatuses.
Description
The invention belongs to the electric heating body technology, relate to the improvement of the manufacturing technology of Electric radiant Heating Film, electric heating piece and insulating barrier.
At present in electric heating appliance, adopt Electric radiant Heating Film, electric heating piece as electric heating body, because of its heat efficiency obtains extensive use far above the metal electric heating silk, existing electrothermal film technology, the one, tin ash class Electric radiant Heating Film, the employing heat spraying method is made, and technological requirement and manufacturing cost are higher, and great majority only are applied to the low temperature low power range; The 2nd, the disclosed slug type electrothermal film technology of Liu Dazhong (CN87103537A), propose a kind of by ground, the single or multiple lift insulating bottom layer, single or multiple lift Electric radiant Heating Film and conductive electrode are formed, the low-melting glass that its Electric radiant Heating Film is made up of multiple oxide (intermediate) is made carrier, the superfine graphite powder is that main conducting particles is made electric conducting material, must be through high temperature sintering ability film forming and fixed with insulation ground or insulating bottom layer, its sintering temperature generally needs about 520 ℃, and (the disclosure material claims that the sintering temperature of this Electric radiant Heating Film is 350 °～650 ℃, in fact being lower than 500 ℃ is to be difficult to the sintering film forming), and confirm according to document and test, graphite will begin oxidation reaction about 450 ℃, thereby this Electric radiant Heating Film will cause the graphite vigorous oxidation before film forming, sintering process complexity not only, and the sintering process condition is very big to the influence of Electric radiant Heating Film resistance, be difficult for producing stay-in-grade product, the shortcoming of this Electric radiant Heating Film also is non-refractory, can only bear 300～350 ℃ at short notice, the long-term work temperature requirement is no more than 180 ℃, and it is not high to bear power density yet.In addition; this Electric radiant Heating Film can only be behind sintering could top electrode; can not carry out resistance to semi-finished product in manufacture process measures; also be difficult to control the stable of product quality; because this Electric radiant Heating Film and binders for electrodes are different materials; thereby " arcing " phenomenon takes place and destroys Electric radiant Heating Film in the two Contact Boundary of electrode and Electric radiant Heating Film in regular meeting, this Electric radiant Heating Film also since easily generation power decay influence durability of products.The insulating bottom layer manufacturing technology that the disclosure document provides, also the intermediate of forming by multiple oxide as carrier add insulating packing at high temperature sintering form, general sintering temperature also needs more than 520 ℃, produce actual proof, sintering temperature is above 500 ℃, not only increased the difficulty of technology, and will be subjected to certain restriction some Products Development (as sugared ceramic products).
Also because preparation electrothermal film material and insulating layer material have used volatile diluent (being alcohols in a large number), when sintering, the alcohols volatile emission will pollute atmospheric environment this technology, and cause the Electric radiant Heating Film structure more loose.Influence the Electric radiant Heating Film quality.
The present invention overcomes the drawback of above-mentioned electric heating body product to propose novel electric heating body and the manufacturing technology thereof that a kind of adhesion type insulating barrier and binding type electrically hotting mask or electric heating piece constitute, this electric heating body can solidify at a lower temperature and forms, thereby improve product quality stability greatly, and manufacturing process, energy efficient have been simplified.
Purpose of the present invention reaches by following technique measures: electric heating body comprises ground, one or more layers insulating barrier, one or more layers Electric radiant Heating Film or electric heating piece, conductive electrode, it is characterized in that insulating barrier be surface of bottom material insulating bottom layer or (with) interlayer insulating film of multilayer Electric radiant Heating Film or electric heating piece or (with) Electric radiant Heating Film or electric heating piece surface insulation sealant, insulating barrier is made of through curing inorganic bond agent carrier and the compound insulated compound body material of forming of insulating particle, Electric radiant Heating Film or electric heating piece then are made of through curing the conduction complex material, this conduction complex material is by the inorganic bond agent carrier and conducting particles is compound forms, wherein can add an amount of curing agent or (with) filler.Can form the design of various electric heating bodies with technical scheme of the present invention, level is arranged can following form: a, insulation ground (as insulation grounds such as pottery, glass) adds Electric radiant Heating Film or the electric heating piece adds surface insulation sealant (as Fig. 1); B, ground add that insulating bottom layer adds Electric radiant Heating Film or the electric heating piece adds surface insulation sealant (as Fig. 2), also can not establish surface insulation sealant (as Fig. 3, Fig. 4), Electric radiant Heating Film or electric heating piece can be established one or more layers as required, and the interlayer of Electric radiant Heating Film or electric heating piece can be provided with insulating barrier.The thickness of every layer of Electric radiant Heating Film can be 0.04～0.45mm, and the thickness of every layer of electric heating piece can be 0.45～4.0mm, and the thickness of every layer insulating can be 0.05～5mm.Electric radiant Heating Film or electric heating piece are to the bonding force of inorganic bond in adhering to of insulation ground or the insulating barrier main dependence conduction complex material, equally, insulating barrier adheres to ground or Electric radiant Heating Film or electric heating piece, main also is the bonding force that relies on inorganic bond in the insulated compound body material, thereby insulating barrier of the present invention and Electric radiant Heating Film or electric heating piece all belong to adhesion type.
Conductive electrode of the present invention can directly be bonded on Electric radiant Heating Film or the electric heating piece as binding agent with the conduction complex material, because this binding agent and Electric radiant Heating Film or electric heating piece are commaterials, helps making conductive electrode and Electric radiant Heating Film or electric heating piece to form integrated.
The present invention adopt the silicates adhesive or (with) the phosphoric acid salt adhesive is as the inorganic bond agent carrier of conduction complex material and insulated compound body material.Said silicates adhesive can be alkali silicate, the one pack system of available neutral water glass, sodium silicate, KP1, rubidium waterglass, lithium silicate or multicomponent compound.Said phosphoric acid salt adhesive can be acid phosphate, metaphosphate, pyrophosphate or directly by phosphoric acid and metal oxide, halide, hydroxide, alkaline salt, silicate, boratory reactant, can adopt the one pack system or the multi-component compound of above-mentioned material.
The conducting particles component that the present invention is conducted electricity in the complex material can adopt alloyed powder, the one pack system or the multi-component mixture of conduction organo-metallic compound powder, metal composite powder, metal and non-metal compound powder, metal and compound complex powder, conductive non-metals powder, conductive non-metals compound powder, conductive metallic compound powder.The particle diameter of conducting particles can be 2 μ～0.5mm, and optimum particle diameter is 3 μ～0.05mm.Said alloyed powder can be Nickel Aluminium Alloy Powder, said conduction organo-metallic compound powder can be carbonyl nickel powder, said metal and non-metal compound powder can be nickel coated graphite powder, said metal and compound complex powder can be nickel coated aluminium oxide powder, nickel bag diatomite in powder, nickel bag zirconia powder, nickel bag tungsten carbide powder, nickel bag calcium fluoride powder, nickel bag molybdenum disulphide powder, said conductive non-metals powder is a carbon black powder, graphite powder, the heavily-doped semiconductor silica flour, said conductive non-metals compound powder is a carborundum powder, and said conductive metallic compound powder is a tungsten carbide powder.
Said conducting particles also can adopt conducting staple fiber, comprise carbon chopped fiber or (with) the graphite short fiber or (with) carborundum brief fiber, the length of short fiber can be 0.2～20mm, diameter can be 5～200 μ, preferably adopting length is 3～5mm, and diameter is the conducting staple fiber of 7～20 μ.
The curing agent of conduction complex material can adopt oxidate powder, comprise silicon dioxide powder, magnesia powder, calcium oxide powder, brown iron oxide, oxide powder and zinc, titanium oxide powder, chromium oxide powder, alumina powder etc., also can adopt aluminium hydrate powder, fluosilicate powder, borate powder, phosphate powder etc., can adopt the one pack system or the multicomponent mixture of above-mentioned material.The filler of conduction complex material can adopt the one pack system or the multicomponent mixture of mica powder, mullite powder, wollastonite in powder, talcum powder, blanc fixe etc.
The insulating particle of insulated compound body material of the present invention can adopt the insulation oxide powder, comprises lead oxide powder, brown iron oxide, zirconia powder, magnesia powder, calcium oxide powder, titanium oxide powder, barium monoxide powder, alumina powder, chromium oxide powder, silicon dioxide powder etc., also can adopt mica powder, wollastonite in powder, talcum powder, mullite powder, clay powder, blanc fixe, the one pack system that can adopt above-mentioned material or multicomponent mixture.
Determining of each component content of conduction complex material, the main conductance of considering material, adhesion strength, curing rate thread factor, according to product power requirement and the material of selecting for use, the proportion of composing of each component can be selected in a big way, general content ratio scope following (percentage by weight, component total amount are 100%):
Inorganic bond agent carrier 15～70%;
Conducting particles 8～75%;
Surplus be curing agent or (with) filler.
According to experiment, the optimum content of conducting particles is 12～35%(percentage by weight).
In insulated compound body material, the inorganic bond vector contg can account for 10～90%, and optimum content is 20～45%, and surplus is insulating particle (percentage by weight).
The present invention can be by following technological process manufacturing:
(1) preparation conduction complex material and insulated compound body material;
(2) with insulated compound body material after forming insulating barrier with methods such as spraying or brushing or blade coating or roller coating or printings on surface of bottom material or Electric radiant Heating Film or the electric heating piece with its airing or baking and curing;
(3) on insulation ground or insulating barrier, form Electric radiant Heating Film or electric heating piece with the conduction complex material, then with its airing or baking and curing with methods such as spraying or brushing or blade coating or roller coating or silk screen printings;
(4) with the conduction complex material conductive electrode bonding or be embedded on Electric radiant Heating Film or the electric heating piece;
(5) with the last semi-finished product baking and curing of making, per pass operation and finishing operation can carry out in 50 ℃～450 ℃ scope the baking and curing of composite insulating barrier or Electric radiant Heating Film or electric heating piece, drying time is 30 minutes to 10 hours, consider from raising the efficiency and save energy equal angles, only condition of cure is: 100 ℃～300 ℃ of curing temperatures, be 30 minutes～120 minutes curing time.
Power designs of the present invention can be by thickness, the area of Electric radiant Heating Film or electric heating piece, resistance of itself and the decision of two electrode distances.
The present invention is owing to adopted new material to prepare insulating barrier and Electric radiant Heating Film or electric heating piece, and product baking and curing is at a lower temperature made, and needn't pass through the high temperature sintering operation, thereby work simplification, and finished product rate height, steady quality.Electric heating body gets final product detected resistance in stage and semi-finished product (before the curing), makes the electric parameter of product be easy to control.Because the adhesive material of bonded-electrode is consistent with Electric radiant Heating Film or electric heating block of material character, can eliminate electrode and Electric radiant Heating Film or electric heating piece Contact Boundary " arcing " phenomenon effectively.Insulated compound body material can constitute one deck insulated enclosure layer at the outer surface of electric heating body and make electric heating body more meet the environment for use requirement.
Electric heating body product of the present invention has can anti-600 ℃ of high temperature and performance deterioration not, can be for a long time in 250 ℃ of work down (through test 240～260 ℃ of 3000 hours performances of work deteriorations not down), can produce and bear up to 30 watts/centimetre
2Power density, can emergency heat and cooling property resistance-chilling repeated stock, the good electrical performance of anti-energising-outage repeated stock.
The present invention can adapt to and make various all-in-one-piece electric heating appliances according to the form of ground, comprise electric heating appliance and electroheat equipment and the device that use in fields such as family expenses, industrial or agricultural, scientific research, national defence, also can be made into various types and be used to assemble electric heating appliance, the electric heating element of unit.
Fig. 1 to Fig. 4 is the structural representation of the electric heating body of different types, and (1) is general ground among the figure, and (2) are the insulation ground, and (3) are insulating bottom layer, and (4) are Electric radiant Heating Film or electric heating piece, and (5) are the surface insulation sealant, and (6) are conductive electrode.
Embodiment one
The making of enamel class electric heating appliance: at the heating position of enamel heating container, insulated compound body material roller coating insulating bottom layer with preparation, thickness is 1mm, after the oven dry, on insulating bottom layer, print (silk screen printing) Electric radiant Heating Film with the conduction complex material, thickness is 0.08mm, then on Electric radiant Heating Film with the bonding embedding conductive electrode of identical conduction complex material (available copper strip), after detection semi-finished product cell hotting mask resistance is qualified, with its oven dry, brush the insulated enclosure layer with insulated compound body material on Electric radiant Heating Film again, thickness is 0.3mm, gives baking and curing again.The prescription of used conduction complex material is (percentage by weight): sodium silicate (40Be ') 43%, nickel coated aluminium oxide powder 34%, silicon dioxide powder 4%, zirconia powder 9%, magnesia powder 10%.The prescription of insulated compound body material is (percentage by weight): acid aluminum phosphate (concentration 48%) 42%, magnesia powder 7.5%, alumina powder 15%, silicon dioxide powder 21%, chromium trioxide powder 5.3%, titanium oxide powder 9.2%.The baking and curing condition: temperature is 150 ℃, and drying time is 60 minutes.
Embodiment two
The making of the electric heating body of insulating ceramics matter ground: the conduction complex material blade coating electric heating piece of on ground, using preparation, thickness 0.45mm, on the electric heating piece with the bonding embedding conductive electrode of identical conduction complex material, dry after detection electric heating piece semi-finished product cell resistance is qualified, insulated compound body material with preparation is brushed the insulated enclosure layer on the electric heating piece, thickness is 1.0mm, and last baking and curing forms.Used conduction complex material prescription is (percentage by weight): neutral water glass (40Be ') 44%, graphite powder 12%, aluminium silicate powder 10%, aluminium oxide powder 10%, silicon dioxide powder 24%.Insulated compound body material prescription (percentage by weight): neutral water glass (40Be ') 32%, silicon dioxide powder 19%, di-iron trioxide powder 24%, zirconia powder 13%, barium monoxide powder 5%, lead oxide powder 7%.The baking and curing condition: curing temperature is 250 ℃, and be 80 minutes curing time.
Embodiment three
Electric heating body with two layers of Electric radiant Heating Film, hierarchical sequence is: ground, insulating bottom layer, Electric radiant Heating Film, insulating barrier, Electric radiant Heating Film, surface insulation sealant, two layers of Electric radiant Heating Film conductive electrode that bonds respectively can form two groups of independently heaters, and conduction complex material prescription is (percentage by weight): acid aluminum phosphate (concentration 48%) 48%, graphite powder 10%, nickel coated graphite powder 5%, titanium dioxide powder 6.7%, silicon dioxide powder 18%, magnesia powder 7.5%, chromium trioxide 4.8%.Insulated compound body material prescription is (percentage by weight): sodium silicate (39Be ') 30%, di-iron trioxide powder 30%, calcium oxide powder 5%, magnesia powder 5%, titanium dioxide powder 7%, silicon dioxide powder 20%, barium monoxide powder 3%.Thickness: Electric radiant Heating Film 0.15mm, insulating barrier 0.25mm, 120 ℃ of curing temperatures, 70 minutes curing times.
Claims (13)
1, a kind of electric heating body, comprise ground, one or more layers insulating barrier, one or more layers Electric radiant Heating Film or electric heating piece, conductive electrode, it is characterized in that insulating barrier be surface of bottom material insulating bottom layer or (with) interlayer insulating film of multilayer Electric radiant Heating Film or electric heating piece or (with) Electric radiant Heating Film or electric heating piece surface insulation sealant, insulating barrier is made of through curing inorganic bond agent carrier and the compound insulated compound body material of forming of insulating particle, Electric radiant Heating Film or electric heating piece then are made of through curing the conduction complex material, said conduction complex material is by the inorganic bond agent carrier and conducting particles is compound forms, wherein can add an amount of curing agent or (with) filler.
2, by the described electric heating body of claim 1, it is characterized in that conductive electrode directly is bonded on Electric radiant Heating Film or the electric heating piece with said conduction complex material.
3, by the described electric heating body of claim 1, the thickness that it is characterized in that every layer of Electric radiant Heating Film is 0.04～0.45mm, and the thickness of every layer of electric heating piece is 0.45～4.0mm, and every layer insulating is 0.05～5mm.
4, by the described electric heating body of claim 1, the inorganic bond agent carrier that it is characterized in that said conduction complex material and insulated compound body material be the silicates adhesive or (with) the phosphoric acid salt adhesive.
5, by the described electric heating body of claim 3, it is characterized in that said silicates adhesive is an alkali silicate.
6, by the described electric heating body of claim 4, it is characterized in that said alkali silicate is the one pack system or the multicomponent compound of neutral water glass, sodium silicate, KP1, rubidium waterglass, lithium silicate.
7, by the described electric heating body of claim 3, it is characterized in that said phosphoric acid salt adhesive is acid phosphate, metaphosphate, pyrophosphate or directly by phosphoric acid and metal oxide, halide, hydroxide, alkaline salt, silicate, boratory reactant, can be above-mentioned material one pack system or multi-component compound.
8, by the described electric heating body of claim 1, it is characterized in that said conducting particles is alloyed powder, conduction organo-metallic compound powder, metal composite powder, metal and non-metal compound powder, metal and compound complex powder, conductive non-metals powder, conductive non-metals compound powder, leads an one pack system of metallic compound powder or multi-component mixture, the particle diameter of conducting particles is 2 μ～0.5mm, and optimum particle diameter is 3 μ～0.05mm.
9, by the described electric heating body of claim 7, it is characterized in that said alloyed powder is a Nickel Aluminium Alloy Powder, said conduction organo-metallic compound powder is a carbonyl nickel powder, said metal composite powder is an Al contained Ni, said metal and non-metal compound powder are nickel coated graphite powder, said metal and compound complex powder are nickel coated aluminium oxide powder, nickel bag diatomite in powder, nickel bag zirconia powder, nickel bag tungsten carbide powder, nickel bag calcium fluoride powder, nickel bag molybdenum disulphide powder, said conductive non-metals powder is a carbon black powder, graphite powder, the heavily-doped semiconductor silica flour, said conductive non-metals compound powder is a carborundum powder, and said conductive metallic compound powder is a tungsten carbide powder.
10, by the described electric heating body of claim 1, it is characterized in that said conducting particles also can be conducting staple fiber, comprise carbon chopped fiber or (with) the graphite short fiber or (with) carborundum brief fiber, the length of short fiber can be 0.2～20mm, diameter can be 5～200 μ, preferably adopting length is 3～5mm, and diameter is the conducting staple fiber of 7～20 μ.
11, by the described electric heating body of claim 1, the curing agent that it is characterized in that said conduction complex material can be oxidate powder, comprise silicon dioxide powder, magnesia powder, calcium oxide powder, brown iron oxide, oxide powder and zinc, titanium oxide powder, chromium oxide powder, alumina powder, also can be aluminium hydrate powder, fluosilicate powder, borate powder, phosphate powder can be above-mentioned substance one pack system or multicomponent mixture; Said filler can be the one pack system or the multicomponent mixture of mica powder, mullite powder, wollastonite in powder, talcum powder, blanc fixe.
12, by the described electric heating body of claim 1, the insulating particle that it is characterized in that said insulated compound body material is the insulation oxide powder, comprises the one pack system or the multicomponent mixture of lead oxide powder, brown iron oxide, zirconia powder, magnesia powder, calcium oxide powder, titanium oxide powder, barium monoxide powder, alumina powder, chromium oxide powder, silicon dioxide powder and mica powder, wollastonite in powder, talcum powder, mullite powder, clay powder, blanc fixe.
13, by the described electric heating body of claim 1, it is characterized in that each component content (percentage by weight of said conduction complex material, the complex total amount is 100%) be: inorganic bond agent carrier 15～70%, conducting particles 8～75%, surplus be curing agent or (with) filler, the optimum content of conducting particles is 12～35%; In the said insulated compound body material, the inorganic bond vector contg can account for 10～90%, and optimum content is 20～45%(percentage by weight), surplus is an insulating particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89201551 CN2053418U (en) | 1989-02-03 | 1989-02-03 | Binding-type electrically exothermic body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89201551 CN2053418U (en) | 1989-02-03 | 1989-02-03 | Binding-type electrically exothermic body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2053418U true CN2053418U (en) | 1990-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89201551 Pending CN2053418U (en) | 1989-02-03 | 1989-02-03 | Binding-type electrically exothermic body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2053418U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016183889A1 (en) * | 2015-05-15 | 2016-11-24 | 深圳市鑫富达电器有限公司 | Thermally-insulated temperature-controlled heating plate |
| US10071565B2 (en) | 2012-04-20 | 2018-09-11 | Goodrich Corporation | Printed heating element |
| CN110970172A (en) * | 2018-09-29 | 2020-04-07 | 中新三三仁智科技江苏有限公司 | Production process of intelligent densified metal nanometer negative ion heat source conductor |
-
1989
- 1989-02-03 CN CN 89201551 patent/CN2053418U/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10071565B2 (en) | 2012-04-20 | 2018-09-11 | Goodrich Corporation | Printed heating element |
| US10946672B2 (en) | 2012-04-20 | 2021-03-16 | Goodrich Corporation | Printed heating element |
| WO2016183889A1 (en) * | 2015-05-15 | 2016-11-24 | 深圳市鑫富达电器有限公司 | Thermally-insulated temperature-controlled heating plate |
| CN110970172A (en) * | 2018-09-29 | 2020-04-07 | 中新三三仁智科技江苏有限公司 | Production process of intelligent densified metal nanometer negative ion heat source conductor |
| CN110970172B (en) * | 2018-09-29 | 2021-06-18 | 中新三三仁智科技江苏有限公司 | Production process of intelligent densified metal nanometer negative ion heat source conductor |
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