CN100479623C - Composite low-voltage electrothermal film and making method - Google Patents
Composite low-voltage electrothermal film and making method Download PDFInfo
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- CN100479623C CN100479623C CNB200510129895XA CN200510129895A CN100479623C CN 100479623 C CN100479623 C CN 100479623C CN B200510129895X A CNB200510129895X A CN B200510129895XA CN 200510129895 A CN200510129895 A CN 200510129895A CN 100479623 C CN100479623 C CN 100479623C
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Abstract
The structure of the complex low-voltage electric heating film (CLEHF) consists of the electric heating inorganic compound (EHIC), the hi-temperature durable (HTD) isolator, the electrodes and the anti-oxidation HTD isolation layer. The EHIC consists of the carbon system inorganic material, the rare-earth material, the metal oxide, the inorganic compound and the polymerization liquid medium adhesive. The manufacture technology of CLEHF includes: ingredient configuring, mixing, skiving, spraying, solidifying and forming. With a low work voltage of 12 volts, CLEHF heats up to 100 degrees centigrade in only 50 seconds. This invention possesses advantages of fast response time, high heating efficiency and wide application range. Depending on different features and usages of various heater bodies, different materials are selected to form different shapes of heating films. Therefore, this heating film adapts to all handy low voltage electric heating apparatuses.
Description
Technical field
The present invention relates to a kind of composite low-voltage electrothermal film, belong to electric heating device.Be particularly related to a kind of 12 volts of following composite low-voltage electrothermal films of low-voltage that are used for.
Background technology
At present, be applied in the numerous areas such as household electrical appliance and industrial electrical equipment, electric heating products is used more and more widely.These electric heating products have many restrictions on using, substantially based in high voltage applications, because the bigger higher voltage that needs of resistance value, high voltage safety is relatively poor, exists electric leakage dangerous.Because of insulating, its heat conduction number of plies is many, and start heats up slow, and material is thick, and product is thick and heavy, and the product processing of small-sized special shape is difficult, and comfortableness is relatively poor, is difficult to do the product of special shape.General thermo electric material also can be applied in the low-voltage, but the low pressure voltage to low-voltage has very big control, need 12 volts above or its power to want greatly, it is restricted so just to carry the design of product in daily life to people, and it is rapid inadequately in low-voltage heating temp response speed, heating temp is not high enough, and volumetric capacity is bigger, and is merrily and lightheartedly small and exquisite inadequately.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of composite low-voltage electrothermal film under 12 volts of low-voltages, can in 50 seconds, generate heat fast to more than 100 ℃, response time is short, hot utility ratio height, can be according to different performance that carrier showed and ranges of application, select different processing carrier materials, process difform Electric radiant Heating Film.Be applicable in all the low-voltage electroheating electrical equipment that can carry, applied range, result of use is good.
The technical solution adopted for the present invention to solve the technical problems is:
Technical solution of the present invention provides a kind of composite low-voltage electrothermal film, and it relates to the improvement on the Electric radiant Heating Film Recipe in the existing manufacture method, the particularly improvement of complex electrocaloric film heating effect under 12 volts of low-voltages.Its formation comprises the electric heating inorganic compound, the heatproof insulating carrier, and conductive electrode, anti-oxidant heatproof insulating coating is formed, and it is characterized in that:
1. the composition of electric heating inorganic compound is: carbon is inorganic material, rare earth material, and the burning material, inorganic combination materials, polymeric liquid medium bonding agent is formed.
A. carbon is that the percentage by weight that inorganic material accounts for composite low-voltage electrothermal film is 15-40%, carbon is that the composition and the percentage value weight ratio thereof of its internal structure of inorganic material is: the 50-80% scale graphite, 15-35% acetylene black, 1-10%300 order carbon fiber powder, 1-10%4-6mm short carbon fiber silk evenly mixes composition.
B. to account for the percentage by weight of composite low-voltage electrothermal film be 20-40% to the burning material, the composition and the percentage value weight ratio thereof of its internal structure of burning material are: the 10-60% bismuth oxide, the 10-60% silver oxide, the 10-60% black nickel oxide evenly mixes composition.
C. the percentage by weight that inorganic combination materials accounts for composite low-voltage electrothermal film is 5-20%, the composition of inorganic its internal structure of combination materials and percentage value weight ratio thereof are: the 20-50% titanium oxide, the 10-30% antimonous oxide, 5-15% magnesium oxide, 5-15% sodium chloride, 10-30% silicon dioxide, the 1-10% di-iron trioxide, 1-10% manganese dioxide evenly mixes composition.
D. to account for the percentage by weight of composite low-voltage electrothermal film be 2-10% to rare earth material, and the composition of its internal structure of rare earth material and percentage value weight ratio thereof are: the 15-40% yittrium oxide, and the 15-40% dysprosia, the 30-70% lanthana evenly mixes composition.
E. to account for the percentage by weight of composite low-voltage electrothermal film be 30-60% to polymeric liquid medium bonding agent, the composition and the percentage value weight ratio thereof of its internal structure of polymeric liquid medium bonding agent are: 70-95% waterglass, the 1-10% dimethicone, the equal powder of 2-15%DA168,1-10%KH550 coupling agent, the 1-5% conductivity improver of filming evenly mixes composition.
2. the heatproof insulating carrier is a glass fibre, ceramic fibre, and through the metallic conductor of insulation processing, synthetic leather fiber, a kind of in the polyimide film.
3. anti-oxidant heatproof insulating coating is the organic silicon insulation resin, the amido insulating resin, and a kind of in the polyimide insulative resin, adding insulation oxide increases insulation effect, and diluent is an absolute ethyl alcohol.
The composite structured of composite low-voltage electrothermal film is: spray low-voltage electrothermal film on the heatproof insulating carrier, on low-voltage electrothermal film, spray conductive electrode, extraction electrode lead on conductive electrode, is connected by soldering, printing conductive silver slurry or the method for electroplating the back sintering between lead and the electrode, on low-voltage electrothermal film and conductive electrode, sprays anti-oxidant heatproof insulating coating.
The preparation method of composite low-voltage electrothermal film is: get the raw materials ready according to the weight percent value according to each composition of above-mentioned composite low-voltage electrothermal film, with carbon is inorganic material, the burning material, rare earth material, inorganic combination materials joins in the polymeric liquid medium bonding agent after evenly mixing successively, stir, on grinder, ground 1 hour, make the slurry of composite low-voltage electrothermal film.
The heatproof insulating carrier is carried out preliminary treatment, carry out cleaning surfaces with absolute ethyl alcohol and handle, treat that it dries naturally, carry out 80 ℃ The pre-heat treatment again in the baking oven.
Composite low-voltage electrothermal film slurry and proper amount of diluting are packed in the spray gun of the air compressor that has water oil content escaping means, be that the air of 0.02-0.05MPa evenly sprays to the composite low-voltage electrothermal film slurry and passed through on the pretreated heatproof insulating carrier with atmospheric pressure, making slurry thickness is the spray film of 0.1mm-0.2mm, treat that it dries naturally, under 0.2MPa exerts pressure condition, baking is 2-4 hour in 180 ℃ vacuum drying oven, removes impurity and solidified forming.
Size requirements according to required article, through the cutting preparation, on composite low-voltage electrothermal film, be coated with conductive silver paste or sticking system metallic conduction electricity paper tinsel as conductive electrode, conductive electrode at composite low-voltage electrothermal film is drawn lead, comprise zero line and live wire, the method by soldering, printed silver slurry or plating sintering between electrode and the lead connects.Lead adopts nickel wire, copper cash or high temperature wire.
Composite low-voltage electrothermal film is carried out surface resistivity evenly detect, measure its power behind the conductor leading, carry out the power adjustment, it is reached in the predefined parameter scope.In practice, two major parameters measuring composite low-voltage electrothermal film are its conductance and its thickness, and the polymeric liquid medium bonding agent of use Different Weight percentage and the conductive filler of different amounts reach the conductance and the thickness of varying level.
The anti-oxidant heatproof insulating coating of spraying on composite low-voltage electrothermal film after the curing drying, promptly gets composite low-voltage electrothermal film at last.
With surface heat watt level and technical parameter variation, can design different composite low-voltage electrothermal films, the geometry range of variation is wide.Therefore in actual application, can adopt standard or non-standard unit mode make exothermic material and use.
This prescription is in the mode of production of having studied existing Electric radiant Heating Film, and on the advantage basis of drawing wherein, design and finish, scale graphite, acetylene black and carbon fiber mix the conductivity that can obviously improve composite low-voltage electrothermal film, can produce enough satisfied electricity heating phenomenon under low-voltage; The burning material is the equal powder of composite low-voltage electrothermal film, makes the resistivity of all even reduction composite low-voltage electrothermal film of distribution of resistance; The prescription of inorganic combination materials plays solidification, fire retardation and anti-conducting particles oxidation susceptibility to composite low-voltage electrothermal film, improves the heat resistance of rete; Rare earth material plays the high temperature conduction to composite low-voltage electrothermal film, increased the far infrared emitted energy of composite low-voltage electrothermal film greatly, penetrate and send out the 4-14um wavelength ray, can activate can in the animal and plant cells, improve the conductance of composite low-voltage electrothermal film, improve the forming property of composite low-voltage electrothermal film; Polymeric liquid medium bonding agent is an adhesion of strengthening composite low-voltage electrothermal film and heatproof insulating carrier, further improve composite low-voltage electrothermal film and heatproof insulating carrier combination degree between the two, make composite low-voltage electrothermal film coating difficult drop-off or breakage, and improve the composite low-voltage electrothermal film durability, improve conductive stability; Anti-oxidant heatproof insulating coating can improve composite low-voltage electrothermal film insulation degree and isolated with skin, in case oxidation and prevent to be short-circuited under the wet environment reduces the composite low-voltage electrothermal film failure phenomenon, improves security performance.By above-mentioned analysis, the composition of each composition of composite low-voltage electrothermal film and proportioning are determined by lot of experiment results.The purpose of this composite low-voltage electrothermal film has guaranteed the high-power requirement of emission under 12 volts of low-voltages, has guaranteed adaptability and the superperformance requirement of composite low-voltage electrothermal film on product, under certain condition, can use for a long time, and the life-span is long.Because resistance is little, the voltage scope of application is wide, and voltage-regulation is flexible, adapts to the low-voltage occasion easily and uses.Characteristics such as low-voltage does not have potential safety hazard, can do the product of special shape, and the low-voltage electroheating product has thin, and is light, easy to carry.
Description of drawings
Fig. 1 is the composite construction schematic diagram of a kind of composite low-voltage electrothermal film of the present invention.
Fig. 2 is the process chart of a kind of composite low-voltage electrothermal film of the present invention.
1. anti-oxidant temperature insulation layers among the figure, 2. conductive electrode, 3. Electric radiant Heating Film, 4. heatproof insulating carrier.
Embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment 1
A kind of composite low-voltage electrothermal film, be a kind of composite structured low-voltage electrothermal film, its composite structured accompanying drawing 1 that sees also, the composite low-voltage electrothermal film upper and lower surface is respectively that anti-oxidant temperature insulation layer is connected with alkali-free glass fiber cloth, Electric radiant Heating Film is coated conductive silver paste, and draws lead.
The percentage value weight ratio of its each composition of composite low-voltage electrothermal film is:
Carbon is inorganic material 21%
Metal oxide materials 25%
Inorganic compound material 10%
Polymeric liquid medium bonding agent 40%
Absolute ethyl alcohol (diluent) is an amount of
Each composition of the composite low-voltage electrothermal film of present embodiment 1 is that the benchmark measuring and calculating gets according to the percentage value weight ratio of its internal structure.
A kind of composite low-voltage electrothermal film, be a kind of composite structured low-voltage electrothermal film, its composite structured accompanying drawing 1 that sees also, the composite low-voltage electrothermal film upper and lower surface is respectively that anti-oxidant temperature insulation layer is connected with ceramic beaverboard, Electric radiant Heating Film is coated conductive silver paste, and draws lead.
The percentage value weight ratio of its each composition of composite low-voltage electrothermal film is:
Carbon is inorganic material 25%
Metal oxide materials 15%
Inorganic compound material 15%
Polymeric liquid medium bonding agent 42%
Absolute ethyl alcohol (diluent) is an amount of
Each composition of the composite low-voltage electrothermal film of present embodiment 2 is that the benchmark measuring and calculating gets according to the percentage value weight ratio of its internal structure.
A kind of composite low-voltage electrothermal film, it is a kind of composite structured low-voltage electrothermal film, its composite structured accompanying drawing 1 that sees also, the composite low-voltage electrothermal film upper and lower surface is respectively that anti-oxidant temperature insulation layer is connected with the stainless steel that has insulating barrier, the stainless insulating barrier weight ratio that has insulating barrier is 80% organic silicon insulation resin, the even mixing of 10% magnesium oxide and 10% titanium oxide is sprayed on the stainless steel surfaces that has insulating barrier and forms through the oven dry in 4 hours of 250 ℃ of baking ovens, Electric radiant Heating Film is coated conductive silver paste, and draws lead.
The percentage value weight ratio of its each composition of composite low-voltage electrothermal film is:
Carbon is inorganic material 30%
Metal oxide materials 18%
Inorganic compound material 16%
Rare earth material 6%
Polymeric liquid medium bonding agent 30%
Absolute ethyl alcohol (diluent) is an amount of
Each composition of the composite low-voltage electrothermal film of present embodiment 1 is that the benchmark measuring and calculating gets according to the percentage value weight ratio of its internal structure.
The processing step of making above-mentioned composite low-voltage electrothermal film is as follows:
1. get the raw materials ready according to the weight percent value according to each composition of above-mentioned composite low-voltage electrothermal film, with carbon is inorganic material, the burning material, rare earth material, inorganic combination materials joins in the polymeric liquid medium bonding agent after evenly mixing successively, stir, on grinder, ground 1 hour, make the slurry of composite low-voltage electrothermal film.
2. the heatproof insulating carrier is carried out preliminary treatment, carry out cleaning surfaces with absolute ethyl alcohol and handle, treat that it dries naturally, carry out 80 ℃ The pre-heat treatment again in the baking oven.
3. composite low-voltage electrothermal film slurry and proper amount of diluting are packed in the spray gun of the air compressor that has water oil content escaping means, be that the air of 0.03MPa evenly sprays to the composite low-voltage electrothermal film slurry and passed through on the pretreated heatproof insulating carrier with air pressure, making slurry thickness is the spray film of 0.15mm, treat that it dries naturally, under 0.2MPa exerts pressure condition, baking is 3 hours in 180 ℃ vacuum drying oven, removes impurity and solidified forming.
4. preparing length and width through cutting is the 10cm*10cm composite low-voltage electrothermal film, on composite low-voltage electrothermal film, coat conductive silver paste or sticking system metallic conduction electricity paper tinsel as conductive electrode, conductive electrode at composite low-voltage electrothermal film is drawn lead, comprise zero line and live wire, the method by soldering between electrode and the lead connects.Lead adopts nickel wire.
5. on composite low-voltage electrothermal film, spray anti-oxidant heatproof insulating coating at last, after the curing drying, promptly get composite low-voltage electrothermal film.
Its manufacturing process flow of composite low-voltage electrothermal film sees also accompanying drawing 2.
At embodiment 1, the composite low-voltage electrothermal film of preparation has following feature among embodiment 2 and the embodiment 3: experiment condition (embodiment 1, embodiment 2 and embodiment 3):
Composite low-voltage electrothermal film; Thickness is 0.15mm; Surface area is 10cm*10cm; 12 volts of low-voltage capacitance 800MA; Continue energising 50 seconds.
The composite low-voltage electrothermal film surface resistivity:
Embodiment 1:15 Ω, embodiment 2:15 Ω, embodiment 3:15 Ω.
Composite low-voltage electrothermal film surface power:
Embodiment 1:18W, embodiment 2:18W, embodiment 3:18W.
Composite low-voltage electrothermal film insulating barrier insulating properties:
Embodiment 1:1200V, 1min does not have puncture, and test is passed through.
Embodiment 2:1200V, 1min does not have puncture, and test is passed through.
Embodiment 3:1200V, 1min does not have puncture, and test is passed through.
Composite low-voltage electrothermal film surface heat temperature:
Embodiment 1: normal temperature to 98 ℃.
Embodiment 2: normal temperature to 112 ℃.
Embodiment 3: normal temperature to 103 ℃.
Composite low-voltage electrothermal film film adhesive (cross-hatching):
Embodiment 1:96, embodiment 2:103, embodiment 3:108.
In sum, effect of the present invention is significantly improved, and has practicality, meets each important document of patent of invention, so propose application for a patent for invention in accordance with the law.
Claims (9)
1. composite low-voltage electrothermal film, it is characterized in that: this composite low-voltage electrothermal film belongs to electric heating device, described composite low-voltage electrothermal film composite construction formation comprises the electric heating inorganic compound, the heatproof insulating carrier, conductive electrode, anti-oxidant heatproof insulating coating, described electric heating inorganic compound are to be inorganic material by carbon, rare earth material, the burning material, inorganic combination materials, polymeric liquid medium bonding agent is formed, the composite low-voltage electrothermal film preparation method is by batching, mix, grind, spraying, solidify the composite low-voltage electrothermal film that technologies such as moulding are made.
2. a kind of composite low-voltage electrothermal film according to claim 1, it is characterized in that: described carbon is that the percentage by weight that inorganic material accounts for composite low-voltage electrothermal film is 15-40%, carbon is that the composition and the percentage value weight ratio thereof of its internal structure of inorganic material is: the 50-80% scale graphite, 15-35% acetylene black, 1-10%300 order carbon fiber powder, 1-10%4-6mm short carbon fiber silk evenly mixes composition.
3. a kind of composite low-voltage electrothermal film according to claim 1, it is characterized in that: the percentage by weight that described burning material accounts for composite low-voltage electrothermal film is 20-40%, the composition and the percentage value weight ratio thereof of its internal structure of burning material are: the 10-60% bismuth oxide, the 10-60% silver oxide, the 10-60% black nickel oxide evenly mixes composition.
4. a kind of composite low-voltage electrothermal film according to claim 1, it is characterized in that: the percentage by weight that described inorganic combination materials accounts for composite low-voltage electrothermal film is 5-20%, the composition of inorganic its internal structure of combination materials and percentage value weight ratio thereof are: the 20-50% titanium oxide, the 10-30% antimonous oxide, 5-15% magnesium oxide, 5-15% sodium chloride, 10-30% silicon dioxide, the 1-10% di-iron trioxide, 1-10% manganese dioxide evenly mixes composition.
5. a kind of composite low-voltage electrothermal film according to claim 1, it is characterized in that: the percentage by weight that described rare earth material accounts for composite low-voltage electrothermal film is 2-10%, the composition of its internal structure of rare earth material and percentage value weight ratio thereof are: the 15-40% yittrium oxide, the 15-40% dysprosia, the 30-70% lanthana evenly mixes composition.
6. a kind of composite low-voltage electrothermal film according to claim 1, it is characterized in that: the percentage by weight that described polymeric liquid medium bonding agent accounts for composite low-voltage electrothermal film is 30-60%, the composition and the percentage value weight ratio thereof of its internal structure of polymeric liquid medium bonding agent are: 70-95% waterglass, the 1-10% dimethicone, the equal powder of 2-15%DA168,1-10%KH550 coupling agent, the 1-5% conductivity improver of filming evenly mixes composition.
7. a kind of composite low-voltage electrothermal film according to claim 1 is characterized in that: described heatproof insulating carrier is a glass fibre, ceramic fibre, and through the metallic conductor of insulation processing, synthetic leather fiber, a kind of in the polyimide film.
8. a kind of composite low-voltage electrothermal film according to claim 1, it is characterized in that: described anti-oxidant heatproof insulating coating is the organic silicon insulation resin, amido insulating resin, a kind of in the polyimide insulative resin, adding insulation oxide increases insulation effect, and diluent is an absolute ethyl alcohol.
9. the manufacture method of a kind of composite low-voltage electrothermal film according to claim 1, it is characterized in that: its manufacturing technology steps of described composite low-voltage electrothermal film is as follows:
(1) aforesaid right is required the prescription of 1 described a kind of composite low-voltage electrothermal film get the raw materials ready according to the weight percent value, with carbon is to join in the polymeric liquid medium bonding agent after inorganic material, burning material, rare earth material and inorganic combination materials are evenly mixed successively, stir, on grinder, ground 1 hour, make the slurry of composite low-voltage electrothermal film;
(2) the heatproof insulating carrier is carried out preliminary treatment, carry out cleaning surfaces with absolute ethyl alcohol and handle, treat that it dries naturally, carry out 80 ℃ The pre-heat treatment again in the baking oven;
(3) composite low-voltage electrothermal film slurry and proper amount of diluting are packed in the spray gun of the air compressor that has water oil content escaping means, be that the air of 0.02-0.05MPa evenly sprays to the slurry of composite low-voltage electrothermal film and passed through on the pretreated heatproof insulating carrier with air pressure, making slurry thickness is the spray film of 0.1mm-0.2mm, treat that it dries naturally, under 0.2MPa exerts pressure condition, baking is 2-4 hour in 180 ℃ vacuum drying oven, removes impurity and solidified forming;
(4) according to the size requirements of required article, through the cutting preparation, on composite low-voltage electrothermal film, be coated with conductive silver paste or sticking system metallic conduction electricity paper tinsel as conductive electrode, conductive electrode at composite low-voltage electrothermal film is drawn lead, comprise zero line and live wire, method by soldering, printed silver slurry or plating sintering between electrode and the lead connects, and lead adopts nickel wire, copper cash or high temperature wire;
(5) composite low-voltage electrothermal film being carried out surface resistivity evenly detects, measure its power behind the conductor leading, carry out the power adjustment, it is reached in the predefined parameter scope, in practice, two major parameters measuring composite low-voltage electrothermal film are its conductance and its thickness, and the polymeric liquid medium bonding agent of use Different Weight percentage and the conductive filler of different amounts reach the conductance and the thickness of varying level;
(6) on composite low-voltage electrothermal film, spray anti-oxidant heatproof insulating coating at last, after the curing drying, promptly get composite low-voltage electrothermal film.
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| CNB200510129895XA CN100479623C (en) | 2005-12-10 | 2005-12-10 | Composite low-voltage electrothermal film and making method |
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| CN102612179B (en) * | 2012-03-15 | 2016-06-29 | 唐致远 | The electroluminescent electrothermal cloth of macromolecule far infrared and heating system thereof |
| CN102685944A (en) * | 2012-05-24 | 2012-09-19 | 郑兴福 | Electric-heating film heating material containing active carbon and preparation method thereof |
| CN102821495A (en) * | 2012-08-17 | 2012-12-12 | 慈溪市圣唯诺电器有限公司 | Polytetrafluoroethylene (PTFE) base electrothermal thick film and manufacturing method thereof |
| CN103966921A (en) * | 2014-04-11 | 2014-08-06 | 王兆进 | Preparation method for calorific wallpaper |
| CN104797016A (en) * | 2015-03-25 | 2015-07-22 | 上海迈永节能新材料科技有限公司 | Inorganic non-metal semiconductor far infrared electric heating film material and preparation process thereof |
| CN107028507A (en) * | 2016-02-04 | 2017-08-11 | 张勇涛 | A kind of baking tray of grill |
| CN107493612B (en) * | 2017-07-03 | 2020-12-04 | 孙克智 | Flexible nano carbon composite material high-temperature electric heating film and preparation method thereof |
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| CN110381614B (en) * | 2019-06-24 | 2022-02-18 | 东莞市中科智恒新材料有限公司 | Far infrared heating material, preparation method of far infrared heating body and far infrared heating body |
| CN111514465B (en) * | 2020-04-23 | 2022-06-24 | 无锡优波生命科技有限公司 | Far infrared light wave generation assembly based on ceramic membrane |
| CN112315305A (en) * | 2020-09-14 | 2021-02-05 | 华帝股份有限公司 | Liner structure, cooking equipment and preparation method of liner structure of cooking equipment |
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