CN112484133A - Method for manufacturing heating film capable of uniformly heating - Google Patents
Method for manufacturing heating film capable of uniformly heating Download PDFInfo
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- CN112484133A CN112484133A CN202011231690.3A CN202011231690A CN112484133A CN 112484133 A CN112484133 A CN 112484133A CN 202011231690 A CN202011231690 A CN 202011231690A CN 112484133 A CN112484133 A CN 112484133A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
- F24D13/02—Electric heating systems solely using resistance heating, e.g. underfloor heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Abstract
The invention discloses a method for manufacturing a heating film capable of uniformly heating, which comprises the following steps: preparing a graphene heating plate, preparing a polyurethane foaming layer, preparing a metal protection shell and assembling and forming a heating film; the graphene heating plate is prepared from the graphene conductive ink, the metal current carrying strip and the polyester film, so that the prepared heating film is uniform in heating, the electrical conversion rate and the infrared efficiency of the heating film are improved, the waterproof performance of the heating film is improved through the polyurethane foaming layer between the graphene heating plate and the metal protection shell, the adhesion is good, the ageing resistance is improved, the prepared heating film is not easy to deform due to heating in the using process through the metal shell arranged on the outer sides of the graphene heating plate and the polyurethane foaming layer, the heating film is corrosion-resistant, has no requirement on the construction ground, is convenient to construct and install, and can effectively avoid product damage in long-distance transportation.
Description
Technical Field
The invention relates to the technical field of electric floor heating, in particular to a manufacturing method of a heating film capable of uniformly heating.
Background
The electric floor heating is characterized in that a heating cable with the upper limit of 65 ℃ allowed working temperature on the surface is buried in a floor, the heating cable is used as a heat source to heat the floor or a ceramic tile, and a temperature controller is used for controlling the room temperature or the ground temperature to realize the heating mode of ground radiation heating, so that the electric floor heating has the advantages of comfort, energy conservation, environmental protection, flexibility, no need of maintenance and the like, the existing electric floor heating mainly uses a heating film as a heating body to be laid under various floor materials, ceramic tiles, marble and the like, and an intelligent temperature controller system is further arranged to form a comfortable, environment-friendly, efficient, energy-saving, no need of maintenance, independent use of each room, extremely long;
the existing heating film for electric floor heating is mostly single in structure, uneven in heating, low in electric conversion rate and far infrared efficiency, easy to deform and damage the ground due to overhigh temperature, easy to trip in a wet paving environment due to poor waterproof performance, and free from a protection structure arranged on the outer surface, so that the existing heating film for electric floor heating is easy to damage due to external force in the transportation and use processes, and is short in service life.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a method for manufacturing a heating film capable of uniformly heating.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme: a method for manufacturing a heating film capable of uniformly heating comprises the following steps:
the method comprises the following steps: preparation of graphene heating plate
Adding specified parts by weight of ethanol, ethylene glycol and glycerol into a stirrer to be stirred and mixed to prepare a mixed solvent, adding specified parts by weight of graphene powder and a dispersing agent into the solvent to be stirred and dispersed, standing for specified time to prepare a graphene dispersion liquid, adding specified parts by weight of varnish, a linking agent and a defoaming agent into the graphene dispersion liquid to be continuously mixed and stirred to prepare graphene conductive ink, then hot-pressing the graphene conductive ink and metal current carrying strips onto a polyester film, enabling the metal current carrying strips to be distributed at equal intervals, preparing a graphene heating plate, respectively forming electrode process holes on two sides of the graphene heating plate, connecting terminals into the electrode process holes, and finally connecting butting plug wires into the electrode process holes;
step two: preparation of polyurethane foam layer
Firstly, adding polyester polyol and polyisocyanate in specified weight parts into a high-speed stirrer for mixing and stirring to prepare a mixture, then adding water, a foaming agent, a catalyst, a surfactant and a curing agent in specified weight parts into the mixture for continuous mixing and stirring to prepare a foaming prepolymer, then putting the foaming prepolymer into a far infrared microwave oven for heating and foaming to prepare a foaming semi-finished product, then putting the foaming semi-finished product into a baking oven for heating and curing, and naturally cooling to room temperature after curing to prepare a polyurethane foaming layer;
step three: preparation of metal protective shell
Firstly, putting a steel raw material into a melting furnace for heating and melting, then guiding the molten steel raw material into a cold pressing die for casting to form a steel plate blank, then carrying out hot rolling processing and cold rolling processing on the steel plate blank in sequence to obtain a cold-rolled steel plate, then carrying out hot galvanizing processing on the cold-rolled steel plate, then milling the cold-rolled steel plate into a protective shell with a fixed size according to production requirements, and finally forming reserved holes on two sides of the protective shell through machining to obtain a metal protective shell;
step four: assembling and forming of heating film
Firstly, install limit for temperature protection device on graphite alkene heating plate top, evenly print distributed electric capacity recovery unit in the bottom surface of graphite alkene heating plate again, paint the special inoxidizing coating that covers 3mm on graphite alkene heating plate surface after that, then install polyurethane foaming layer gomphosis to the metal protective housing inboard and bond through waterproof powerful glue, later install graphite alkene heating plate gomphosis on the top of the polyurethane foaming layer in the metal protective housing and pass the preformed hole of metal protective housing with the butt joint plug cord, bond through waterproof powerful glue at last, prepare the heating film finished product after the solidification of waterproof powerful glue.
The further improvement lies in that: in the first step, the mixing time of the ethanol, the ethylene glycol and the glycerol in the stirrer is 30 minutes, the dispersing time of the graphene powder, the dispersing agent and the solvent in the stirrer is 60 minutes, the graphene powder, the dispersing agent and the solvent are kept standing for 48 hours in an environment of 4 ℃ after dispersion, and the stirring time of the varnish, the bonding agent, the defoaming agent and the graphene dispersion liquid in the stirrer is 30 minutes.
The further improvement lies in that: in the first step, the butt joint plug wire comprises a plug male wire and a plug bus, the plug male wire and the plug bus are distributed on two sides of the graphene heating plate, and connecting ends of the plug male wire and the plug bus are mutually matched.
The further improvement lies in that: in the second step, the stirring time of the polyester polyol and the polyisocyanate in the high-speed stirrer is 30 minutes, the rotating speed of the high-speed stirrer is set to 10000r/min, and the stirring time of the mixture after adding the water, the foaming agent, the catalyst, the surfactant and the curing agent is 60 minutes.
The further improvement lies in that: in the second step, the foaming time of the foaming prepolymer in the far infrared microwave oven is 60 minutes, the heating temperature in the far infrared microwave oven is set to be 160 ℃, the curing time of the foaming semi-finished product in the baking oven is set to be 30 minutes, and the heating temperature in the baking oven is set to be 180 ℃.
The further improvement lies in that: in the third step, the steel plate blank is preheated for 150 minutes at the temperature of 1200 ℃ during hot rolling, the temperature during hot rolling is 950 ℃, the steel plate blank obtained by hot rolling is pickled during cold rolling, and the reduction rate during cold rolling is 70%.
The further improvement lies in that: in the third step, the cold-rolled steel sheet is firstly placed into an annealing furnace to be heated to 700 ℃ when being subjected to hot galvanizing, then is kept warm for five minutes, and is cooled to 500 ℃ at the speed of 40 ℃/s to be subjected to hot galvanizing.
The invention has the beneficial effects that: according to the invention, the graphene heating plate is prepared by the graphene conductive ink, the metal current carrying strip and the polyester film, so that the prepared heating film is uniformly heated, the electrical conversion rate and the infrared efficiency of the heating film are improved, the waterproof performance of the heating film is improved by the polyurethane foaming layer between the graphene heating plate and the metal protective shell, the adhesion is good, the aging resistance is also improved, the prepared heating film is not easy to deform due to heating in the use process by the metal shell arranged on the outer sides of the graphene heating plate and the polyurethane foaming layer, the heating film is corrosion-resistant, has no requirement on the construction ground, is convenient to construct and install, and can effectively avoid product damage in long-distance transportation, the problem that the traditional heating film is easy to trip due to electric leakage is solved by arranging the distributed capacitance recovery device on the bottom surface of the graphene heating plate, and the problem that the traditional floor heating module is easy to overheat in large area due to improper use is avoided by the temperature limiting protection device The problem, the area that generates heat is bigger when making the heating film generate heat evenly, and the efficiency of generating heat is higher, lays the timber apron to the dry-type construction and can solve the floor that part timber apron is heated inhomogeneous and lead to and move back the seam problem, and manufacturing process is simple and clear in addition, easily operates, and manufacturing cost is also not high, is fit for using widely.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present embodiment provides a method for manufacturing a heat generating film that generates heat uniformly, including the steps of:
the method comprises the following steps: preparation of graphene heating plate
Adding ethanol, glycol and glycerol in specified weight parts into a stirrer to be stirred and mixed to prepare a mixed solvent, adding graphene powder and a dispersing agent in specified weight parts into the solvent to be stirred and dispersed, standing for specified time to prepare a graphene dispersion liquid, adding varnish, a linking agent and an antifoaming agent in specified weight parts into the graphene dispersion liquid to be continuously mixed and stirred to prepare graphene conductive ink, then hot-pressing the graphene conductive ink and metal current carrying strips onto a polyester film to enable the metal current carrying strips to be distributed at equal intervals to prepare a graphene heating plate, respectively opening electrode process holes on two sides of the graphene heating plate, connecting a connecting terminal into the electrode process holes, and finally connecting a butting plug wire into the electrode process holes, wherein the mixing time of the ethanol, the glycol and the glycerol in the stirrer is 30 minutes, and the dispersing time of the graphene powder, the dispersing agent and the solvent in the stirrer is 60 minutes, standing for 48 hours in an environment of 4 ℃ after dispersion, wherein the stirring time of the ink adjusting oil, the connecting agent, the defoaming agent and the graphene dispersion liquid in a stirrer is 30 minutes, the butt-joint plug wire comprises a plug male wire and a plug bus, the plug male wire and the plug bus are distributed on two sides of the graphene heating plate, and the connecting ends of the plug male wire and the plug bus are mutually matched;
step two: preparation of polyurethane foam layer
Firstly, adding polyester polyol and polyisocyanate with specified weight parts into a high-speed stirrer for mixing and stirring to prepare a mixture, then adding water, a foaming agent, a catalyst, a surfactant and a curing agent with specified weight parts into the mixture for continuous mixing and stirring to prepare a foaming prepolymer, then putting the foaming prepolymer into a far infrared microwave oven for heating and foaming to prepare a foaming semi-finished product, then putting the foaming semi-finished product into a baking oven for heating and curing, naturally cooling to room temperature after curing is completed to prepare a polyurethane foaming layer, wherein the stirring time of the polyester polyol and the polyisocyanate in the high-speed stirrer is 30 minutes, the rotating speed of the high-speed stirrer is set to 10000r/min, the stirring time of the mixture after adding the water, the foaming agent, the catalyst, the surfactant and the curing agent is 60 minutes, and the foaming time of the foaming prepolymer in the far infrared microwave oven is 60 minutes, setting the heating temperature in a far infrared microwave oven at 160 ℃, curing the foamed semi-finished product in a baking oven for 30 minutes, and setting the heating temperature in the baking oven at 180 ℃;
step three: preparation of metal protective shell
Firstly, putting steel raw materials into a melting furnace for heating and melting, then guiding the melted steel raw materials into a cold pressing die for casting to form a steel plate blank, then carrying out hot rolling processing and cold rolling processing on the steel plate blank in sequence to obtain a cold-rolled steel plate, then carrying out hot galvanizing processing on the cold-rolled steel plate, milling the cold-rolled steel plate into a protective shell with fixed size according to production requirements, finally forming reserved holes on two sides of the protective shell through machining to obtain the metal protective shell, preheating a steel plate blank at 1200 ℃ for 150 minutes during hot rolling, wherein the hot rolling temperature is 950 ℃, in the cold rolling process, the steel plate blank obtained by hot rolling is firstly pickled, the reduction rate in the cold rolling process is 70 percent, when the cold-rolled steel plate is subjected to hot galvanizing, the cold-rolled steel plate is firstly put into an annealing furnace to be heated to 700 ℃, then preserving heat for five minutes, cooling to 500 ℃ at the speed of 40 ℃/s for hot galvanizing;
step four: assembling and forming of heating film
Firstly, install limit for temperature protection device on graphite alkene heating plate top, evenly print distributed electric capacity recovery unit in the bottom surface of graphite alkene heating plate again, paint the special inoxidizing coating that covers 3mm on graphite alkene heating plate surface after that, then install polyurethane foaming layer gomphosis to the metal protective housing inboard and bond through waterproof powerful glue, later install graphite alkene heating plate gomphosis on the top of the polyurethane foaming layer in the metal protective housing and pass the preformed hole of metal protective housing with the butt joint plug cord, bond through waterproof powerful glue at last, prepare the heating film finished product after the solidification of waterproof powerful glue.
The method for manufacturing the heating film capable of uniformly heating prepares the graphene heating plate through the graphene conductive ink, the metal current carrying strip and the polyester film, so that the manufactured heating film can uniformly heat, the electrical conversion rate and the infrared efficiency of the heating film are improved, the waterproof performance of the heating film is improved through the polyurethane foaming layer between the graphene heating plate and the metal protective shell, the adhesiveness is good, the aging resistance is also improved, the manufactured heating film is not easy to deform due to heating in the using process through the metal shell arranged on the outer sides of the graphene heating plate and the polyurethane foaming layer, the manufactured heating film is corrosion-resistant, has no requirement on the construction ground, is convenient to construct and install, can effectively avoid product damage in long-distance transportation, and avoids the problem that the traditional heating film is easy to trip due to electric leakage by arranging the distributed capacitance recovery device on the bottom surface of the graphene heating plate, avoided traditional ground to warm up the module and appeared the overheated problem of large tracts of land because of the misuse easily through limit for temperature protection device, the area of generating heat is bigger when making the heating film generate heat evenly, and the efficiency of generating heat is higher, lays the floor that the timber apron can solve part timber apron and be heated inhomogeneous and lead to and move back the seam problem to dry construction, and manufacturing process is simple clear in addition, easily operates, and manufacturing cost is also not high, is fit for using widely.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A manufacturing method of a heating film capable of uniformly heating is characterized in that: the method comprises the following steps:
the method comprises the following steps: preparation of graphene heating plate
Adding specified parts by weight of ethanol, ethylene glycol and glycerol into a stirrer to be stirred and mixed to prepare a mixed solvent, adding specified parts by weight of graphene powder and a dispersing agent into the solvent to be stirred and dispersed, standing for specified time to prepare a graphene dispersion liquid, adding specified parts by weight of varnish, a linking agent and a defoaming agent into the graphene dispersion liquid to be continuously mixed and stirred to prepare graphene conductive ink, then hot-pressing the graphene conductive ink and metal current carrying strips onto a polyester film, enabling the metal current carrying strips to be distributed at equal intervals, preparing a graphene heating plate, respectively forming electrode process holes on two sides of the graphene heating plate, connecting terminals into the electrode process holes, and finally connecting butting plug wires into the electrode process holes;
step two: preparation of polyurethane foam layer
Firstly, adding polyester polyol and polyisocyanate in specified weight parts into a high-speed stirrer for mixing and stirring to prepare a mixture, then adding water, a foaming agent, a catalyst, a surfactant and a curing agent in specified weight parts into the mixture for continuous mixing and stirring to prepare a foaming prepolymer, then putting the foaming prepolymer into a far infrared microwave oven for heating and foaming to prepare a foaming semi-finished product, then putting the foaming semi-finished product into a baking oven for heating and curing, and naturally cooling to room temperature after curing to prepare a polyurethane foaming layer;
step three: preparation of metal protective shell
Firstly, putting a steel raw material into a melting furnace for heating and melting, then guiding the molten steel raw material into a cold pressing die for casting to form a steel plate blank, then carrying out hot rolling processing and cold rolling processing on the steel plate blank in sequence to obtain a cold-rolled steel plate, then carrying out hot galvanizing processing on the cold-rolled steel plate, then milling the cold-rolled steel plate into a protective shell with a fixed size according to production requirements, and finally forming reserved holes on two sides of the protective shell through machining to obtain a metal protective shell;
step four: assembling and forming of heating film
Firstly, install limit for temperature protection device on graphite alkene heating plate top, evenly print distributed electric capacity recovery unit in the bottom surface of graphite alkene heating plate again, paint the special inoxidizing coating that covers 3mm on graphite alkene heating plate surface after that, then install polyurethane foaming layer gomphosis to the metal protective housing inboard and bond through waterproof powerful glue, later install graphite alkene heating plate gomphosis on the top of the polyurethane foaming layer in the metal protective housing and pass the preformed hole of metal protective housing with the butt joint plug cord, bond through waterproof powerful glue at last, prepare the heating film finished product after the solidification of waterproof powerful glue.
2. The method of manufacturing a heat generating film generating heat uniformly as set forth in claim 1, wherein: in the first step, the mixing time of the ethanol, the ethylene glycol and the glycerol in the stirrer is 30 minutes, the dispersing time of the graphene powder, the dispersing agent and the solvent in the stirrer is 60 minutes, the graphene powder, the dispersing agent and the solvent are kept standing for 48 hours in an environment of 4 ℃ after dispersion, and the stirring time of the varnish, the bonding agent, the defoaming agent and the graphene dispersion liquid in the stirrer is 30 minutes.
3. The method of manufacturing a heat generating film generating heat uniformly as set forth in claim 1, wherein: in the first step, the butt joint plug wire comprises a plug male wire and a plug bus, the plug male wire and the plug bus are distributed on two sides of the graphene heating plate, and connecting ends of the plug male wire and the plug bus are mutually matched.
4. The method of manufacturing a heat generating film generating heat uniformly as set forth in claim 1, wherein: in the second step, the stirring time of the polyester polyol and the polyisocyanate in the high-speed stirrer is 30 minutes, the rotating speed of the high-speed stirrer is set to 10000r/min, and the stirring time of the mixture after adding the water, the foaming agent, the catalyst, the surfactant and the curing agent is 60 minutes.
5. The method of manufacturing a heat generating film generating heat uniformly as set forth in claim 1, wherein: in the second step, the foaming time of the foaming prepolymer in the far infrared microwave oven is 60 minutes, the heating temperature in the far infrared microwave oven is set to be 160 ℃, the curing time of the foaming semi-finished product in the baking oven is set to be 30 minutes, and the heating temperature in the baking oven is set to be 180 ℃.
6. The method of manufacturing a heat generating film generating heat uniformly as set forth in claim 1, wherein: in the third step, the steel plate blank is preheated for 150 minutes at the temperature of 1200 ℃ during hot rolling, the temperature during hot rolling is 950 ℃, the steel plate blank obtained by hot rolling is pickled during cold rolling, and the reduction rate during cold rolling is 70%.
7. The method of manufacturing a heat generating film generating heat uniformly as set forth in claim 1, wherein: in the third step, the cold-rolled steel sheet is firstly placed into an annealing furnace to be heated to 700 ℃ when being subjected to hot galvanizing, then is kept warm for five minutes, and is cooled to 500 ℃ at the speed of 40 ℃/s to be subjected to hot galvanizing.
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| CN104818824A (en) * | 2015-03-23 | 2015-08-05 | 江苏科暖热能科技有限公司 | Electric heating floor board and manufacturing method thereof |
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| CN108756127A (en) * | 2018-05-31 | 2018-11-06 | 石家庄邦迪高分子材料有限公司 | Far infrared, negative oxygen ion, fast-assembling graphene heating floor |
| CN109413773A (en) * | 2017-08-18 | 2019-03-01 | 王敏 | A kind of production method of graphene Electric radiant Heating Film (electric hot plate) electric heating a heatable brick bed plate |
| CN210183569U (en) * | 2019-06-20 | 2020-03-24 | 王晓新 | Concave-convex surface electric heating plate |
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2020
- 2020-11-06 CN CN202011231690.3A patent/CN112484133A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818824A (en) * | 2015-03-23 | 2015-08-05 | 江苏科暖热能科技有限公司 | Electric heating floor board and manufacturing method thereof |
| CN106967335A (en) * | 2017-03-20 | 2017-07-21 | 北京旭碳新材料科技有限公司 | Watersoluble plumbago alkene electrically conductive ink, electric heating device, device and preparation method thereof |
| CN109413773A (en) * | 2017-08-18 | 2019-03-01 | 王敏 | A kind of production method of graphene Electric radiant Heating Film (electric hot plate) electric heating a heatable brick bed plate |
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