CN106003889A - High-elastic electric-induced-heating compound film and preparation method thereof - Google Patents
High-elastic electric-induced-heating compound film and preparation method thereof Download PDFInfo
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Abstract
The invention provides a high-elastic electric-induced-heating compound film and a preparation method thereof. The preparation method for the high-elastic electric-induced-heating compound film is characterized by comprising the following steps: 1) soaking a carbon nano tube film into a graphene suspension liquid for a period of time, and then taking out and naturally airing under room temperature, thereby obtaining a flexible nanometer conductive film; 2) taking an elastic film as an elastic adhering substrate, applying a certain tensile force to the two ends thereof, stretching for a certain elongation and then fixing, and coating the upper surface of the elastic adhering substrate with a layer of liquid elastic adhesive; 3) pressing and soaking the flexible nanometer conductive film on the liquid elastic adhesive and curing the adhesive under a certain condition; 4) releasing the tensile force applied to the elastic adhering substrate and driving the flexible nanometer conductive film to retract, thereby obtaining the electric-induced-heating compound film. The electric-induced-heating compound film acquired according to the preparation method has the advantages of light weight, high flexibility and high elasticity as well as excellent anti-ageing property, safety and long service life.
Description
Technical field
The present invention relates to Electric radiant Heating Film field, more particularly, it relates to high-elastic electroluminescent heating film technical field.
Background technology
In field of electric heating, there are resistance heating, electromagnetic induction heating and microwave heating three types, wherein make
With being most widely resistance heating manner, resistance adds hankers there is various heating element heater, uses tinsel to do the earliest and adds
Hot material, later in order to improve the life-span of heating wire, is found that again the high temperature refractory such as tungsten, copper, chromium, nickel,
The heating wire made with these materials, the life-span improves tens times.Still later, people have invented again inorganic non-gold
Belong to ceramic heating material and there is the material of ptc characteristics (PTC), but the processing of metal electric heating membrane
Complex process, relatively costly；Inorganic material conducting film is fragility, can only make stiffness films；Based on organic
The Electric radiant Heating Film of material becomes other heating in some application because of its good pliability, electric conductivity and safety
Element is not caned substituted product, in household electrical appliance, power electronics, communication, the energy, Aero-Space, intelligence
The field such as wearable has a wide range of applications.
The electroluminescent exothermic material having on market has quality weight, and volume is big, is weak to bending, the most tensile
Shortcomings, has had a strong impact on the thermo electric material application in fields such as wearable field or outdoor high and cold protection.
Summary of the invention
The technical problem to be solved is to provide a kind of high-elastic electroluminescent heating composite film and preparation method thereof.
In order to solve above-mentioned technical problem, the invention provides a kind of electroluminescent heating composite film, it is characterised in that
Including elastica and be bonded in the flexible nano conducting film on the upside of elastica.
It is highly preferred that the upside of described flexible nano conducting film bonds another elastica.
Present invention also offers the preparation method of above-mentioned electroluminescent heating composite film, it is characterised in that including:
Step 1: be immersed in by carbon nano-tube film in graphene suspension after a period of time, takes out, at room temperature
Naturally dry, obtain flexible nano conducting film；
Step 2: using elastica as elastic attachment matrix, and its two ends are applied certain pulling force, stretched
Fixing after certain percentage elongation, the upper surface at elastic attachment matrix coats one layer of hydroelasticity binding agent；
Step 3: flexible nano is conducted electricity mould stain on above-mentioned hydroelasticity binding agent, in certain condition
Under make binding agent solidify；
Step 4: the pulling force that release is applied on elastic attachment matrix so that it is drive flexible nano conducting film retraction,
Can be prepared by electroluminescent heating composite film.
Preferably, in described step 3, before " making binding agent solidify ", first at flexible nano conducting film
Upper surface coating one layer of hydroelasticity binding agent, another elastica is attached on this hydroelasticity binding agent.
Preferably, the end being additionally included in flexible nano conducting film in described step 1 is adhered to by conductive silver glue
Electrode, or, in described step 3, flexible nano is conducted electricity mould stain at above-mentioned hydroelasticity binding agent
After on, in the end of flexible nano conducting film by conductive silver glue adhesive electrodes.
It is highly preferred that described electrode is copper sheet, copper wire or CNT yarn.
Preferably, described carbon nano-tube film is prepared by single wall or multi-walled carbon nano-tubes, and carbon nanotube diameter is
10nm-100nm, film thickness is 10 μm-50 μm, and porosity is 35%-75%, and hot strength is
100MPa-500MPa, electrical conductivity is 104-105S/m。
It is highly preferred that the size of described carbon nano-tube film is identical with the elastica after stretching.
Preferably, the concentration of described graphene suspension is 1mg/ml-50mg/ml, dip time 1-5h,
Dipping number of times is 1-3 time, can design alternative as required.
Preferably, described elastica be polydimethylsiloxanefilm film, acrylate film, polyurethane film or
Elastomer thin film.
Preferably, described hydroelasticity binding agent is polydimethylsiloxane (PDMS), polyurethane and third
At least one in olefin(e) acid binding agent.
Preferably, the percentage elongation in described step 2 is the 5～50% of the elongation at break of elastica.It is applied to
The pulling force at elastic attachment matrix two ends is determined by the elastic attachment matrix material selected.
Preferably, the percentage elongation in described step 2 is 50%-100%.
The conditions such as described hardening time, temperature, pressure are determined by selected binding agent.
Compared with prior art, the invention has the beneficial effects as follows:
1. present invention employs organic elastomer attachment matrix, and using the nano conductive film of high conduction as electroluminescent
Thermal medium, uses relevant bonding combination process, obtains tensile property and pliability is good, electric heating property is stable
Electroluminescent heating material composite membrane.Electroluminescent heating composite film obtained by the present invention has light weight, flexible, elastic
The advantage of high (percentage elongation, up to 50%, can stretch more than 10000 times under the elongation of 40% repeatedly), with
Time there is good resistance to ag(e)ing and safety, the life-span is long.
2. the present invention uses conductive nano membrane material to be ultra-thin (10 μm-50 μm) carbon being impregnated with Graphene granule
Nanotube films material, electrical conductivity is up to 1.5*105S/m, on the one hand its heat conversion is high, stable and uniform of generating heat,
Safe and reliable, save the energy；On the other hand it is pliable and tough frivolous, has far infrared effect, can be used for health-care physiotherapeutic.
3. the Electric radiant Heating Film designability of the present invention is strong, can be selected for the kind of elastic matrix and prestretched degree to electric heating
The elasticity of composite membrane regulates and controls, it is also possible to adjusted heating property by the cutting of nano conductive film and design
Control, thus meet the multiple demand in market, the scope of application is the most extensive.
4. elastic attachment matrix, nano conductive film and the electrode seal of the present invention is combined into one, and can repeatedly draw
Rise more than 10000 times, effectively prevent electrode cracking, the problem such as aging, tired.
5. present invention can apply to the electric heating products exploitation of every field, can answer as the thermo electric material in anorak
With intelligent wearable field, because this Electric radiant Heating Film is flexible and folds, it is possible to be applied to industry neck as pipeline tracing
Territories etc., in intelligence wearable, pipeline tracing, household electrical appliance, power electronics, communication, the energy, Aero-Space
Have a wide range of applications in field.
Accompanying drawing explanation
Fig. 1 is the electroluminescent heating composite film side view in embodiment 1；
Fig. 2 is the electroluminescent heating composite film side view in embodiment 2；
Fig. 3 is the electroluminescent heating composite film side view in embodiment 3.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments are merely to illustrate
The present invention rather than restriction the scope of the present invention.In addition, it is to be understood that read the present invention lecture content it
After, the present invention can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within this equally
Application appended claims limited range.
Percentage elongation in the present invention refers to the percentage ratio of length that sample extends and original length.
Embodiment 1: clothing liner elastica
As it is shown in figure 1, a kind of electroluminescent heating composite film, it is bonded in including elastica 1 and by binding agent 2
Flexible nano conducting film 3 on the upside of elastica 1, binding agent is passed through in the upside of described flexible nano conducting film 3
2 bond another elastica 1.
The preparation method of above-mentioned electroluminescent heating composite film, concretely comprises the following steps:
Step 1: be immersed in by carbon nano-tube film in graphene suspension after 3h, takes out, at room temperature natural
Dry, obtain flexible nano conducting film, coat conductive silver glue at the two ends of flexible nano conducting film, by copper wire electricity
Pole is inserted in conductive silver glue, adheres to copper wire electrode by conductive silver glue；
Described carbon nano-tube film preferred dimension is 40*40mm2Carbon nano-tube film (Chinese Academy of Sciences Su Zhouna
Rice technology and nano bionic institute), multi-walled carbon nano-tubes prepare, carbon nanotube diameter is 10-50nm,
Film thickness is 10 μm, and porosity is 75%, and hot strength is 150MPa, and electrical conductivity is 104S/m.Described
The concentration of graphene suspension be 2mg/ml, dip time 3h, dipping number of times is 1 time.
Step 2: using elastica as elastic attachment matrix, and its two ends are applied certain pulling force, stretched
Fixing after the percentage elongation of 50%, the upper surface at elastic attachment matrix coats one layer of hydroelasticity binding agent；
Step 3: flexible nano is conducted electricity mould stain on above-mentioned hydroelasticity binding agent, lead at flexible nano
Upper surface one layer of hydroelasticity binding agent of coating of electrolemma, is attached to this hydroelasticity binding agent by another elastica
On, keep the extended state of elastic attachment matrix, dry in 100 DEG C of baking ovens and make binding agent solidify in 35 minutes；
Elastica in described step 2 and 3 is PDMS film, selects Dow Corning Corporation to produce
The organic silicon potting adhesive (two ingredient liquids) of SYLGARD 184 model, component A is PDMS solution, B
Component is firming agent, according to A: B be 10: 1 ratio be sufficiently mixed, obtain mixed liquor C, at 100 DEG C
Solidifying 35 minutes in baking oven, form PDMS film, thickness is 0.5mm, is cut into length and width and is 40mm
Lamella；Hydroelasticity binding agent in described step 2 and 3 is that (the most above-mentioned is mixed for PDMS binding agent
Close liquid C).
Step 4: the pulling force that release is applied on elastic attachment matrix so that it is drive flexible nano conducting film retraction,
Can be prepared by electroluminescent heating composite film.
This electroluminescent heating composite film is by connecting small-sized 3.7V lithium ion battery (the scientific and technological limited public affairs of big good full benefit
Department) and temperature detect switch (TDS) (Jiangsu Run Hong electrothermic instrument company limited), the test to this elasticity Electric radiant Heating Film shows,
The temperature of 4cm × 4cm sample can rise to 40-51 DEG C in 5 seconds, can regulate temperature detect switch (TDS), makes temperature tie up
Holding in human comfort's temperature, therefore this electroluminescent heating composite film can be as clothing inner lining film materials'use, for cold
Under the conditions of the crowd that works provide warming.
Embodiment 2: heat supply pipeline elastic heat preserving film
As in figure 2 it is shown, a kind of electroluminescent heating composite film, it is bonded in including elastica 1 and by binding agent 2
Flexible nano conducting film 3 on the upside of elastica 1, binding agent is passed through in the upside of described flexible nano conducting film 3
2 bond another elastica 1.The head and the tail two ends of described electroluminescent heating composite film are bonded into loop configuration.
The preparation method of above-mentioned electroluminescent heating composite film, concretely comprises the following steps:
Step 1: be immersed in by carbon nano-tube film in graphene suspension after 3h, takes out, at room temperature natural
Dry, obtain flexible nano conducting film；
Described carbon nano-tube film is with embodiment 1.The concentration of described graphene suspension is 2mg/ml, dipping
Time 3h, dipping number of times is 1 time.
Step 2: using elastica as elastic attachment matrix, and its two ends are applied certain pulling force, stretched
Fixing after the percentage elongation of 100%, the upper surface at elastic attachment matrix coats one layer of hydroelasticity binding agent；
Step 3: flexible nano is conducted electricity mould stain on above-mentioned hydroelasticity binding agent, lead at flexible nano
The two ends coating conductive silver glue of electrolemma, is inserted into copper wire electrode in conductive silver glue, adheres to copper by conductive silver glue
Silk electrode, the upper surface at flexible nano conducting film coats one layer of hydroelasticity binding agent, another elastica is pasted
It is attached on this hydroelasticity binding agent, keeps the extended state of elastic attachment matrix, 60 DEG C of baking ovens dry 12
Hour binding agent is made to solidify；
Elastica in described step 2 and 3 is polyurethane film, selects waterborne polyurethane resin PU-3011 (wide
Zhou Guanzhi new material Science and Technology Ltd. development & production) within 12 hours, obtain polyurethane film 60 DEG C of solidifications, its
Thickness is 0.4mm, is cut into 320*2mm2Lamella；Hydroelasticity bonding in described step 2 and 3
Agent is waterborne polyurethane resin PU-3011；Conductive silver glue (Dongguan City wound plastic in described step 2 and 3
Viscous Products Co., Ltd) sheet resistance ＜ 0.1onms/sq.
Step 4: the pulling force that release is applied on elastic attachment matrix so that it is drive flexible nano conducting film retraction,
Can be prepared by electroluminescent heating composite film.The poly-ammonia of aqueous by the head and the tail two ends liquid of above-mentioned electroluminescent heating composite film
After ester resin PU-3011 bonding, solidify in 60 degrees Celsius of baking ovens and within 12 hours, circularize, as shown in Figure 2.
The polyurethane film low cost of the present embodiment, nuisanceless, disposable, bonding effect is good, and corrosion resistance is strong,
It is designed to loop configuration, pipeline can be wrapped in peripheral, therefore can be used for the Heat preservation of heat supply pipeline, reduce and supply
Thermal medium thermal loss in course of conveying, saves fuel, it is ensured that heating quality, to meet the needs of user.
Embodiment 3: bathroom mirror antifog film
As it is shown on figure 3, a kind of electroluminescent heating composite film, it is bonded in including elastica 1 and by binding agent 2
Flexible nano conducting film 3 on the upside of elastica 1, binding agent is passed through in the upside of described flexible nano conducting film 3
2 bond another elastica 1.
The preparation method of above-mentioned electroluminescent heating composite film, concretely comprises the following steps:
Step 1: be immersed in by carbon nano-tube film in graphene suspension after 3h, takes out, at room temperature natural
Dry, obtain flexible nano conducting film；
Described carbon nano-tube film (the Chinese Academy of Sciences Su Zhouna that carbon nano-tube film preferred dimension is 1m*10mm
Rice technology and nano bionic institute), multi-walled carbon nano-tubes prepare, carbon nanotube diameter is 10-50nm,
Film thickness is 20 μm, and porosity is 75%, and hot strength is 150MPa, and electrical conductivity is 1.5*105s/m。
The concentration of described graphene suspension is 2mg/ml, dip time 3h, and dipping number of times is 1 time.
Step 2: using elastica as elastic attachment matrix, and its two ends are applied certain pulling force, stretched
Fixing after the percentage elongation of 50%, the upper surface at elastic attachment matrix coats one layer of hydroelasticity binding agent；
Step 3: 7 1m*10mm flexible nano conducting films are spaced apart 2mm arranged in parallel and press stain to exist
On above-mentioned hydroelasticity binding agent, coat conductive silver glue at the two ends of flexible nano conducting film, by copper wire electrode
Being inserted in conductive silver glue, adhere to copper wire electrode by conductive silver glue, the upper surface at flexible nano conducting film is coated with
Cover one layer of hydroelasticity binding agent, another elastica is attached on this hydroelasticity binding agent, keep elastic attached
The extended state of matrix, dry in 100 DEG C of baking ovens and make binding agent solidify in 35 minutes；
Elastica in described step 2 and 3 is PDMS film, selects Dow Corning Corporation to produce
The organic silicon potting adhesive (two ingredient liquids) of SYLGARD 184 model, component A is PDMS solution, B
Component is firming agent, according to A: B be 10: 1 ratio be sufficiently mixed, obtain mixed liquor C, at 100 DEG C
Solidifying 35 minutes in baking oven, form PDMS film, thickness is 0.5mm, is cut into the sheet of 1m*1m
Layer；Hydroelasticity binding agent in described step 2 and 3 is PDMS binding agent (the most above-mentioned mixed liquor C)；
Conductive silver glue in described step 3 (Dongguan City Chuan Cheng adhesive article company limited) sheet resistance ＜ 0.1onms/sq.
Step 4: the pulling force that release is applied on elastic attachment matrix so that it is drive flexible nano conducting film retraction,
Can be prepared by electroluminescent heating composite film.
The present embodiment prepare electroluminescent heating film under the extension strain of 100% resistance change rate within 1%,
Under 1.5V voltage, being energized 1 minute, the temperature of this heating film i.e. can reach 20 degrees Celsius, thus reaches to disappear
Purpose except water smoke.
The one side of PDMS film can be made with bonding glass by glass glue (Ao Sibang company limited of Shenzhen)
Use for bathroom mirror antifog film.This antifog film outer layer PDMS film, has hydrophobicity, corrosion-resistant, resistance to height
Temperature, the advantage such as high transparency, selected carbon nano-tube film and the exothermic material such as resistance wire or carbon fiber on market
Comparing, thermal transition efficiency is high, stable and uniform of generating heat, and is not easily broken, safe and reliable.
Claims (10)
1. an electroluminescent heating composite film, it is characterised in that include elastica and be bonded on the upside of elastica
Flexible nano conducting film.
Electroluminescent heating composite film the most as claimed in claim 1, it is characterised in that described flexible nano is led
The upside of electrolemma bonds another elastica.
3. the preparation method of the electroluminescent heating composite film described in claim 1 or 2, it is characterised in that including:
Step 1: be immersed in by carbon nano-tube film in graphene suspension after a period of time, takes out, at room temperature
Naturally dry, obtain flexible nano conducting film；
Step 2: using elastica as elastic attachment matrix, and its two ends are applied certain pulling force, stretched
Fixing after certain percentage elongation, the upper surface at elastic attachment matrix coats one layer of hydroelasticity binding agent；
Step 3: flexible nano is conducted electricity mould stain on above-mentioned hydroelasticity binding agent, in certain condition
Under make binding agent solidify；
Step 4: the pulling force that release is applied on elastic attachment matrix so that it is drive flexible nano conducting film retraction,
Can be prepared by electroluminescent heating composite film.
The preparation method of electroluminescent heating composite film the most as claimed in claim 3, it is characterised in that described
In step 3, before " making binding agent solidify ", first the upper surface at flexible nano conducting film coats one layer of liquid
Body elasticity binding agent, is attached to another elastica on this hydroelasticity binding agent.
The preparation method of electroluminescent heating composite film the most as claimed in claim 3, it is characterised in that described
Conductive silver glue adhesive electrodes is passed through in the end being additionally included in flexible nano conducting film in step 1, or, described
In step 3, flexible nano is conducted electricity mould stain on above-mentioned hydroelasticity binding agent after, lead at flexible nano
Conductive silver glue adhesive electrodes is passed through in the end of electrolemma.
The preparation method of electroluminescent heating composite film the most as claimed in claim 3, it is characterised in that described
Carbon nano-tube film is prepared by single wall or multi-walled carbon nano-tubes, and carbon nanotube diameter is 10nm-100nm, film thickness
Being 10 μm-50 μm, porosity is 35%-75%, and hot strength is 100MPa-500MPa, and electrical conductivity is
104-105S/m。
The preparation method of electroluminescent heating composite film the most as claimed in claim 3, it is characterised in that described
The concentration of graphene suspension is 1mg/ml-50mg/ml, dip time 1-5h, and dipping number of times is 1-3 time.
The preparation method of electroluminescent heating composite film the most as claimed in claim 3, it is characterised in that described
Elastica is polydimethylsiloxanefilm film, acrylate film, polyurethane film or elastomer thin film.
The preparation method of electroluminescent heating composite film the most as claimed in claim 3, it is characterised in that described
Hydroelasticity binding agent is at least one in polydimethylsiloxane, polyurethane and acryloid cement.
The preparation method of electroluminescent heating composite film the most as claimed in claim 3, it is characterised in that institute
Percentage elongation in the step 2 stated is 50%-100%.
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