CN1549654A - Nano-composite material electric heating film - Google Patents
Nano-composite material electric heating film Download PDFInfo
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- CN1549654A CN1549654A CNA031223737A CN03122373A CN1549654A CN 1549654 A CN1549654 A CN 1549654A CN A031223737 A CNA031223737 A CN A031223737A CN 03122373 A CN03122373 A CN 03122373A CN 1549654 A CN1549654 A CN 1549654A
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Abstract
An electric heating film is made of a composite material by weight ratio as 1:0.8-1.3 and flexible high polymer material standing high temperature of 100 degree C as the composite material is formed by 0.2-20 % (by weight) of nanographite carbon powder, 0.2-6% (by weight) of nanocarbon tube, 0.2-6% (by weight) of carbon fibre and surplus of superfine graphite powder.
Description
Technical field
The present invention relates to a kind of electric heating material, particularly relate to the electric heating film material.
Background technology
The application of electric heating material is apart from the history of existing hundreds of years of the present, and is to metal, nonmetal electric heating film material, innumerable from metallic resistance silk, nonmetal electric heating material.The appearance of electric heating film can not make the useful life of exothermic material and electric conversion ratio be improved, generally speaking, the useful life of electric heating film material than metallic resistance filament length 5-10 doubly, and than about metallic resistance silk economize on electricity 40-50%, but, the heating efficiency of metal heating film is all below 70%, and the heating efficiency of carbon heating film generally also is no more than 75%.Therefore, to studying of electric heating material, seek and to save the energy, longer service life more and to heat up more rapidly that material remains present hot topic.
There is report Meng Guojun etc. to invent a kind of nano graphite carbon composite electropyrexia material, it is to mix with nano-graphite carbon composite and insulating material, by weight percentage, used nano-graphite carbon composite accounts for 50-90%, insulating material accounts for 10-49%, fire retardant 0.1-1%, with above-mentioned material routinely technology mix aftershaping, promptly make nano graphite carbon composite electropyrexia material.It is said that this electric heating material can be made into the electric heating dress ornament, various heating article such as electric blanket.But the report that does not have the heating efficiency, fail safe etc. of this electricity heating product.
Summary of the invention
The objective of the invention is to provide a kind of electric heating film material, this membrane material will have the flexibility that is enough to bend, quick heating, and heat efficiency height, and, still can keep good bending performance behind hot operation.
The present invention provides a kind of electric heating film material and reaches the foregoing invention purpose.Electric heating material of the present invention comprises a kind of composite material and the anti-flexible high molecular material of high temperature more than 100 ℃, the weight ratio of described composite material and described macromolecular material is 1: 0.8-1.3, and described composite material comprises and accounts for this composite material total weight and be:
A) carbon powder from nano graphite of 0.2-20% (weight);
B) CNT (carbon nano-tube) of 0.2-6% (weight);
C) carbon fiber of 0.2-6% (weight); And
D) the superfine graphite powder of surplus.
The present invention also provides a kind of method for preparing the electric heating film material, and this method comprises the steps: 1) each component of above-mentioned formation composite material was mixed 15-25 hour the preparation composite material under 380-600rpm in sealing, normal temperature and mixing speed; 2) with described composite material and anti-more than 100 ℃ the flexible high molecular material of high temperature be 1 in the weight ratio of described composite material and described macromolecular material: the ratio of 0.8-1.3, evenly mix at normal temperatures; And, 3) be shaped to sheet.
Embodiment
The present inventor is by the electric property of the multiple nano material of research, discovery is with a certain proportion of nano material, be carbon powder from nano graphite and CNT (carbon nano-tube), combine with a certain proportion of carbon fiber and superfine graphite powder that is used for electric heating material, can obtain rate of heat exchange height, nano composite material that electric property is good, by silicon rubber is compound preferably with this nano composite material and high temperature resistant and pliability, can obtain energy-conservation, high life and the fast nano composite material electric heating film of programming rate.
Discover, when with carbon powder from nano graphite 0.2-20% (weight); CNT (carbon nano-tube) 0.2-6% (weight); Carbon fiber 0.2-6% (weight); And the superfine graphite powder (problem is the same) of surplus constitutes composite material, and with this composite material and anti-more than 100 ℃ the macromolecular material of high temperature combine and moulding after, can obtain the heat efficiency and be higher than 90%, even reach nano composite material electric heating film 99%, that more economize on electricity than common electrical heating film.
In above-mentioned electric heating film material, preferred described composite material comprises and accounts for this composite material total weight and be: the carbon powder from nano graphite of 2-10% (weight); The CNT (carbon nano-tube) of 2-4% (weight); The carbon fiber of 1-1.6% (weight); And the superfine graphite powder of surplus.
In the present invention, in above-mentioned composite material, comprise the graphite powder of two kinds of granularities, wherein, described superfine graphite powder is meant micron-sized graphite powder, normally obtains by Mechanical Method pulverizing graphite.Described carbon powder from nano graphite is meant the graphite powder of particle size between 1-1000nm, and preferably particle size is controlled at the graphite powder of tens nanometers, as the carbon powder from nano graphite according to the preparation of the method for CN1378976A.
In a preferred embodiment of the invention, by the total weight of composite material, the content of carbon powder from nano graphite is preferably 2-10% (weight), and the content of CNT (carbon nano-tube) is preferably 2-4% (weight); The content of carbon fiber is preferably 1-1.6% (weight); And, the superfine graphite of surplus.
Optionally, described composite material further comprises and accounts for this composite material total weight 0.2-4% (weight) fire retardant, and preferred fire retardant is a zinc oxide.
Described composite material can be mixed with by the method for routine, as by above-mentioned various components are stirred under normal temperature and also mix under the condition of sealing, mixing speed generally in the scope of 380-600rpm, the time remaining 15-25 of stirring hour.In the process of preparation, the agglomeration traits of nano material can solve according to the disclosed method of CN1378976A.
In a preferred embodiment of the invention, described anti-more than 100 ℃ the flexible high molecular material of high temperature be preferably silicon rubber, neoprene or fluorubber.In the higher occasion of temperature, more preferably use silicon rubber.
Described composite material can be carried out more than 100 ℃ with anti-the mixing of flexible high molecular material of high temperature in a conventional manner, as with pulverous or liquid anti-more than 100 ℃ the flexible high molecular material of high temperature add in the above-mentioned composite material in described ratio, evenly mix at normal temperatures.When using pulverous silicon rubber, mixing is to finish in 5-6 hour by stirring under the mixing speed of 380-600rpm; And when using fluid silicone rubber, mixing is to finish in 10-20 minute by stirring under the mixing speed of 380-600rpm.
In preferred version of the present invention, according to the conventional method of this area,, electric heating material of the present invention is shaped to sheet material as by room temperature vulcanization etc., preferably, described electric heating material is shaped to the sheet material of thickness at 0.05-0.15mm.Preferably, when moulding, directly a kind of anti-high opaque film is coated the sheet material of institute's moulding, the thickness of this high temperature insulation film is preferably 0.08-0.10mm.Preferred this anti-high opaque film is the anti-dielectric film of temperature more than 300 ℃, as polyesteramide.The thickness of the electric heating film of resulting coated insulation film is 0.20-0.35mm.
Resulting nano composite material electric heating film can use according to the mode of common electric heating film.For example, be positive pole with an end of whole electric heating film, the other end is a negative pole, is electric heating film between the positive and negative electrode.According to different caloric value demands, can be on whole electric heating film punching or fluting, adjust heating area and caloric value.
Resulting nano composite material electric heating film has made full use of CNT (carbon nano-tube) and carbon powder from nano graphite good conductivity, the characteristics that rate of heat exchange is high, carbon fiber switching performance is preferably arranged again, resulting nano composite material electric heating film can direct current and alternating voltage work down, when voltage during at 3 volts to 220 volts, its heating efficiency all can reach more than 90%, when this nano composite material electric heating film when exchanging the following voltage of 110V or under direct current 3V-24V voltage, working, its heating efficiency even reach more than 99%, electricity saving performance is good, more than 40%, economize on electricity more than 20% than common resistance wire economize on electricity than common electric heating film.
The prepared nano composite material long service life of the present invention, experimental result is greater than 10,000 hours.
This electric heating film can replace all industry and civilian insulations, the heater members in the heater element.
Because prepared nano composite material electric heating film is flexible, can make different shape and directly coat and need heated device, perhaps, be covered by in heat-conducting metal or the pottery and use the use of also this electric heating film can being curled as the heating sheet.
Product of the present invention can be used in the various electric heating products, as is used in domestic heating equipment, electric blanket, roaster, water heater, electric iron, electric cooker, the water dispenser, also can be used as insulation, the heating material of oil transportation, water-supply-pipe.
Describe the present invention by the following examples in detail, but be not to be used to limit the present invention.
Embodiment 1
Take by weighing the raw material of following weight:
Raw material weight (gram)
Carbon powder from nano graphite (Hangtian Nano Science and Technology Co Ltd, Guizhou) 900
CNT (carbon nano-tube) (Shenyang metal research institute of the Chinese Academy of Sciences) 20
Carbon fiber (1mm carbon fiber, carbon element factory, Jilin carbon element group Shanghai) 250
Superfine graphite powder (Shanghai colloidization factory) 3630
Zinc oxide (commercially available) 200
Silicon rubber (powder, Foshan silica gel Products Co., Ltd) 4500
Polyesteramide film (0.10mm is thick, Kingsoft, Shanghai adhesive Co., Ltd)
Carbon powder from nano graphite, CNT (carbon nano-tube), carbon fiber, superfine graphite powder and zinc oxide are closed in the stirred tank, under the normal temperature, under the mixing speed of 380rpm, continue to stir 25 hours.Silicon rubber powder is added in the above-mentioned composite material, under normal temperature, under the mixing speed of 380rpm, mixed 6 hours.The moulding upper and lower surface coats the sheet material of polyesteramide film in make-up machine, and its thickness is 0.25mm.
Embodiment 2
Take by weighing the raw material of following weight:
Raw material weight (gram)
Carbon powder from nano graphite (Hangtian Nano Science and Technology Co Ltd, Guizhou) 100
CNT (carbon nano-tube) (Shenyang metal research institute of the Chinese Academy of Sciences) 200
Carbon fiber (1mm carbon fiber, carbon element factory, Jilin carbon element group Shanghai) 50
Superfine graphite powder (Shanghai colloidization factory) 4640
Zinc oxide (commercially available) 10
Silicon rubber (liquid, Foshan silica gel Products Co., Ltd) 5000
Polyesteramide film (0.08mm is thick, Kingsoft, Shanghai adhesive Co., Ltd)
Repeat the step of embodiment 1, obtain the electric heating film that thickness is 0.21mm.
Embodiment 3
Take by weighing the raw material of following weight:
Raw material weight (gram)
Carbon powder from nano graphite (Hangtian Nano Science and Technology Co Ltd, Guizhou) 500
CNT (carbon nano-tube) (Shenyang metal research institute of the Chinese Academy of Sciences) 100
Carbon fiber (1mm carbon fiber, carbon element factory, Jilin carbon element group Shanghai) 80
Superfine graphite powder (Shanghai colloidization factory) 4270
Zinc oxide (commercially available) 50
Neoprene (powder, Foshan silica gel Products Co., Ltd) 6000
Polyesteramide film (0.08mm is thick, Kingsoft, Shanghai adhesive Co., Ltd)
Repeat the step of embodiment 1, obtain the electric heating film that thickness is 0.25mm.
Embodiment 4
Take by weighing the raw material of following weight:
Raw material weight (gram)
Carbon powder from nano graphite (Hangtian Nano Science and Technology Co Ltd, Guizhou) 500
CNT (carbon nano-tube) (Shenyang metal research institute of the Chinese Academy of Sciences) 100
Carbon fiber (1mm carbon fiber, carbon element factory, Jilin carbon element group Shanghai) 80
Superfine graphite powder (Shanghai colloidization factory) 4270
Zinc oxide (commercially available) 50
Fluorubber (powder, Foshan silica gel Products Co., Ltd) 6000
Polyesteramide film (0.08mm is thick, Kingsoft, Shanghai adhesive Co., Ltd)
Repeat the step of embodiment 3, obtain the electric heating film that thickness is 0.25mm.
Experimental example
Use the platinum resistance thermometer of specification as RCY-2A, the heating efficiency of the electric heating film of embodiment 1 preparation is tested, the result is as shown in table 1.
Table 1
| Nominal voltage | The heat efficiency |
| Direct current 12V direct current 24V exchanges 12V and exchanges 24V interchange 36V interchange 110V | ????99.9％ ????99.3％ ????99.4％ ????99.1％ ????99.6％ ????99.3％ |
Claims (10)
1. electric heating material, it is characterized in that, described electric heating material comprises a kind of composite material and the anti-flexible high molecular material of high temperature more than 100 ℃, the weight ratio of described composite material and described macromolecular material is 1: 0.8-1.3, and described composite material comprises and accounts for this composite material total weight and be:
A) carbon powder from nano graphite of 0.2-20% (weight);
B) CNT (carbon nano-tube) of 0.2-6% (weight);
C) carbon fiber of 0.2-6% (weight); And
Superfine graphite powder by surplus.
2. electric heating material as claimed in claim 1 is characterized in that, described composite material comprises and accounts for this composite material total weight and be:
A) carbon powder from nano graphite of 2-10% (weight);
B) CNT (carbon nano-tube) of 2-4% (weight);
C) carbon fiber of 1-1.6% (weight); And
D) the superfine graphite powder of surplus.
3. electric heating material as claimed in claim 1 is characterized in that, described anti-more than 100 ℃ the flexible high molecular material of high temperature be selected from silicon rubber, neoprene or fluorubber.
4. electric heating material as claimed in claim 1 is characterized in that, described anti-more than 100 ℃ the flexible high molecular material of high temperature be silicon rubber.
5. electric heating material as claimed in claim 1 is characterized in that, described composite material further comprises and accounts for this composite material total weight 0.2-4% (weight) fire retardant.
6. electric heating material as claimed in claim 1 is characterized in that, described fire retardant is a zinc oxide.
7. electric heating material as claimed in claim 1 is characterized in that, described electric heating material is the sheet of thickness at 0.05-0.15mm.
8. electric heating material as claimed in claim 7 is characterized in that, described is that 0.08-0.10mm is coated by the high temperature insulation film by thickness further.
9. electric heating material as claimed in claim 8 is characterized in that, described high temperature insulation film is a polyesteramide.
10. method for preparing as the electric heating material of one of claim 1-9, this method comprises the steps:
1) each component that will constitute composite material was mixed 15-25 hour under the mixing speed of sealing, normal temperature, 380-600rpm, and preparation composite material, described composite material comprise and account for this composite material total weight and be:
A) carbon powder from nano graphite of 0.2-20% (weight);
B) CNT (carbon nano-tube) of 0.2-6% (weight);
C) carbon fiber of 0.2-6% (weight); And
D) the superfine graphite powder of surplus;
2) with described composite material and anti-more than 100 ℃ the flexible high molecular material of high temperature be 1 in the weight ratio of described composite material and described macromolecular material: the ratio of 0.8-1.3, evenly mix at normal temperatures;
3) be shaped to sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031223737A CN100433942C (en) | 2003-05-19 | 2003-05-19 | Nano-composite material electric heating film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031223737A CN100433942C (en) | 2003-05-19 | 2003-05-19 | Nano-composite material electric heating film |
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| Publication Number | Publication Date |
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| CN1549654A true CN1549654A (en) | 2004-11-24 |
| CN100433942C CN100433942C (en) | 2008-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031223737A Expired - Fee Related CN100433942C (en) | 2003-05-19 | 2003-05-19 | Nano-composite material electric heating film |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455146C (en) * | 2005-09-20 | 2009-01-21 | 中国江南航天工业集团江南工业贸易公司 | Carbon material electrical heating membrane and preparing method |
| CN101090586B (en) * | 2006-06-16 | 2010-05-12 | 清华大学 | Nano flexible electrothermal material and heating device containing the nano flexible electrothermal material |
| US8278604B2 (en) | 2009-08-14 | 2012-10-02 | Tsinghua University | Carbon nanotube heater-equipped electric oven |
| US8294098B2 (en) | 2007-03-30 | 2012-10-23 | Tsinghua University | Transmission electron microscope micro-grid |
| US8357881B2 (en) | 2009-08-14 | 2013-01-22 | Tsinghua University | Carbon nanotube fabric and heater adopting the same |
| TWI407931B (en) * | 2009-08-17 | 2013-09-11 | Hon Hai Prec Ind Co Ltd | Electric oven |
| US8841588B2 (en) | 2009-03-27 | 2014-09-23 | Tsinghua University | Heater |
| CN106851873A (en) * | 2017-01-20 | 2017-06-13 | 韩荣泽 | A kind of electric heating material and preparation method thereof and electric heater |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166558C (en) * | 2002-05-17 | 2004-09-15 | 陈万哲 | Process for preparing nano graphite carbon powder from nano graphite sol |
| CN1180660C (en) * | 2002-09-27 | 2004-12-15 | 孟国军 | Nano graphite carbon composite electropyrexia material |
-
2003
- 2003-05-19 CN CNB031223737A patent/CN100433942C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455146C (en) * | 2005-09-20 | 2009-01-21 | 中国江南航天工业集团江南工业贸易公司 | Carbon material electrical heating membrane and preparing method |
| CN101090586B (en) * | 2006-06-16 | 2010-05-12 | 清华大学 | Nano flexible electrothermal material and heating device containing the nano flexible electrothermal material |
| US8294098B2 (en) | 2007-03-30 | 2012-10-23 | Tsinghua University | Transmission electron microscope micro-grid |
| US8841588B2 (en) | 2009-03-27 | 2014-09-23 | Tsinghua University | Heater |
| US8278604B2 (en) | 2009-08-14 | 2012-10-02 | Tsinghua University | Carbon nanotube heater-equipped electric oven |
| US8357881B2 (en) | 2009-08-14 | 2013-01-22 | Tsinghua University | Carbon nanotube fabric and heater adopting the same |
| TWI407931B (en) * | 2009-08-17 | 2013-09-11 | Hon Hai Prec Ind Co Ltd | Electric oven |
| CN106851873A (en) * | 2017-01-20 | 2017-06-13 | 韩荣泽 | A kind of electric heating material and preparation method thereof and electric heater |
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|---|---|
| CN100433942C (en) | 2008-11-12 |
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Granted publication date: 20081112 Termination date: 20120519 |