CN1103743A - Producing method for far-infrared compound electric-heating element - Google Patents
Producing method for far-infrared compound electric-heating element Download PDFInfo
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- CN1103743A CN1103743A CN 93115257 CN93115257A CN1103743A CN 1103743 A CN1103743 A CN 1103743A CN 93115257 CN93115257 CN 93115257 CN 93115257 A CN93115257 A CN 93115257A CN 1103743 A CN1103743 A CN 1103743A
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- powder
- epoxy resin
- conductive layer
- phenolic resins
- heating element
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Abstract
The compound electric heating element is produced by compounding conductive sheets and insulating sheets made of graphite powder, carbon black powder, calcium carbonate powder, calcium silicate powder, magnesium chloride powder, phenolic resin and epoxy resin. It is used in producing various electothermal appliance for warming, etc.
Description
The present invention relates to a kind of manufacturing technology of electric heating material, especially a kind of manufacture method of far-infrared compound electric-heating element.
At present people are familiar with is transformed into hot thermo electric material by electricity generally electric furnace heating wire, quartz ampoule, the selenium carbon rod, kinds such as Electric radiant Heating Film and PTC semiconductor exothermic material, electric furnace heating wire, quartz ampoule, this class thermo electric material of selenium carbon-point belongs to high temperature modification, working temperature is generally at 800 ℃-1200 ℃, that uses on the general industry is more, during use to insulating properties, heat-resisting quantity, conditional requests such as fail safe are higher, thermo electric materials such as Electric radiant Heating Film and PTC thermistor then belong to low form, working temperature is generally at 80 ℃-90 ℃, the making of this class thermo electric material and use all more complicated, must be coated on the carrier as Electric radiant Heating Film is that direct spary is immersed in and forms the technology described in Electric radiant Heating Film such as the Chinese patent application No. 86100500 " a kind of coating type electric heating element and technology " and No. 87102341 " epoxy resins complex electrocaloric film " on the ground.The thermo electric material of its use is that the superfine graphite powder adds an amount of lemel such as steel nickel, and compound, semiconductor fine powder, directly brush or be attached to indirectly on glass, enamel and other insulating properties materials, the deficiency of this class thermo electric material is comparatively complexity and a cost height of manufacture craft.PTC semiconductor thermistor thermo electric material then must be fixed in composition group chip electric heater on the special carrier, and problems such as cost height, assembling difficulty are also arranged.Be extensive use of and be subjected to certain restriction.
The purpose of this invention is to provide that a kind of manufacture craft is simple, material is easy to get, cost is low, does not need the manufacture method of the far-infrared compound electric-heating element of carrier.
Far-infrared compound electric-heating element of the present invention is made up of insulating barrier, conductive layer and lead: the employed material of conductive layer is: graphite powder, carbon black powder, Paris white, calcium silicate powder, magnesium chloride powder, phenolic resins, epoxy resin and other polymer resins; What the present invention used is phenolic resins and epoxy resin, and its weight percent consists of: graphite powder 10-30, carbon black powder 10-20, Paris white 5-15, calcium silicate powder 10-20, magnesium chloride powder 10-20, phenolic resins 1-10, epoxy resin 1-10.The manufacture method of this conductive layer is graphite powder, carbon black powder, Paris white, calcium silicate powder, magnesium chloride powder to be proportioned be added in phenolic resins and the epoxy resin, stirs, and puts into the mixing 0.3-0.5cm of the being squeezed into conductive foil of mixing roll.
The employed material of insulating barrier is calcium carbonate, phenolic resins, epoxy resin, its heavy percentage composition is calcium carbonate 20-60, phenolic resins 5-10, epoxy resin 5-10, calcium carbonate, phenolic resins, epoxy resin is lumped together stir the mixing heat insulating lamella that is pressed into of mixing roll.
Lead adopts existing stainless steel netting twine.
Embodiment: the making of electric heating element.Get a conductive foil and two heat insulating lamellas according to the size of made electric heating element, the stainless steel netting twine is placed in the two ends of conductive foil, conductive foil and stainless steel netting twine are placed between the two-layer heat insulating lamella, and pressurization, hot briquetting then solidified resin polymerization.Electric heating element thickness after the moulding generally is controlled at about 0.5-1cm and takes out electric heating element and pass to voltage 2-4 hour of 50-100V and wear out, and carries out decorative appearance at last, the finishing electric heating appliance is just made and finished.
The preparation method the most suitable making domestic heating device of far-infrared compound electric-heating element of the present invention and other industrial low-temperature heaters. Such as thermostatic chamber, warm case, incubator etc., compare with existing all kinds of electric heating appliances, have material to be easy to get, simple in structure, be easy to processing, with low cost, and volume is little, being easy to the advantages such as installation, is the another newcomer of electric heating family, will have good economic results in society.
Claims (4)
1, the manufacture method of far-infrared compound electric-heating element, comprise conductive layer, insulating barrier and lead, it is characterized in that conductive layer is to be composited by graphite powder, carbon black powder, magnesium chloride powder, Paris white, calcium silicate powder, phenolic resins, epoxy resin, insulating barrier is to be composited by phenolic resins, epoxy resin and calcium carbonate, conductive layer is between insulating barrier, and stainless (steel) wire lead and conductive layer join.
2, method according to claim 1, the weight percent that it is characterized in that each composition of conductive layer consists of: graphite powder 10-30, carbon black powder 10-20, Paris white 5-15, calcium silicate powder 10-20, magnesium chloride powder 10-20, phenolic resins 1-10, epoxy resin 1-10, the compound mixing thin slice that is pressed into 0.3-0.5cm under the normal temperature.
3, method according to claim 1 is characterized in that the weight percent of each composition of insulating barrier consists of: calcium carbonate 20-60, phenolic resins 5-10, epoxy resin 5-10, the compound mixing thin slice that is pressed into 0.1-0.3cm under the normal temperature.
4, method according to claim 1 is characterized in that the conductive foil that will suppress places between the heat insulating lamella, adds the stainless (steel) wire lead in the conducting shell chip edge, then three layers of compound foil is pressed into the thin plate of 0.5-1cm, the heat ageing of switching at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93115257 CN1103743A (en) | 1993-12-11 | 1993-12-11 | Producing method for far-infrared compound electric-heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93115257 CN1103743A (en) | 1993-12-11 | 1993-12-11 | Producing method for far-infrared compound electric-heating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1103743A true CN1103743A (en) | 1995-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93115257 Pending CN1103743A (en) | 1993-12-11 | 1993-12-11 | Producing method for far-infrared compound electric-heating element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1103743A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411493C (en) * | 2002-12-13 | 2008-08-13 | 王曦俊 | Infrared electrothermal composite plate |
| CN100518415C (en) * | 2006-12-27 | 2009-07-22 | 中国科学院金属研究所 | Heating unit of infrared electric heating plate and producing method |
-
1993
- 1993-12-11 CN CN 93115257 patent/CN1103743A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411493C (en) * | 2002-12-13 | 2008-08-13 | 王曦俊 | Infrared electrothermal composite plate |
| CN100518415C (en) * | 2006-12-27 | 2009-07-22 | 中国科学院金属研究所 | Heating unit of infrared electric heating plate and producing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Aimin Document name: Notice of first review |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Jiang Ming Document name: Deemed as a notice of withdrawal |
|
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |