CN109618436A - The preparation method of exothermic material, heating layer, heating cable and heating layer - Google Patents
The preparation method of exothermic material, heating layer, heating cable and heating layer Download PDFInfo
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- CN109618436A CN109618436A CN201910047793.5A CN201910047793A CN109618436A CN 109618436 A CN109618436 A CN 109618436A CN 201910047793 A CN201910047793 A CN 201910047793A CN 109618436 A CN109618436 A CN 109618436A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 164
- 239000000463 material Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 53
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 34
- 239000011230 binding agent Substances 0.000 claims abstract description 32
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 31
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 27
- 239000010410 layer Substances 0.000 claims description 132
- 238000001816 cooling Methods 0.000 claims description 30
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 229920002379 silicone rubber Polymers 0.000 claims description 19
- 230000004927 fusion Effects 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 238000007766 curtain coating Methods 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 10
- 238000007747 plating Methods 0.000 claims description 10
- 229920000098 polyolefin Polymers 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 238000005496 tempering Methods 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 206010037660 Pyrexia Diseases 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 239000011241 protective layer Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 8
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 6
- 239000004800 polyvinyl chloride Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 230000005670 electromagnetic radiation Effects 0.000 abstract description 12
- 230000006378 damage Effects 0.000 abstract description 11
- 229920002050 silicone resin Polymers 0.000 description 9
- 238000002156 mixing Methods 0.000 description 7
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- VDGJOQCBCPGFFD-UHFFFAOYSA-N oxygen(2-) silicon(4+) titanium(4+) Chemical compound [Si+4].[O-2].[O-2].[Ti+4] VDGJOQCBCPGFFD-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 239000005439 thermosphere Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/54—Heating elements having the shape of rods or tubes flexible
- H05B3/56—Heating cables
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
Landscapes
- Resistance Heating (AREA)
Abstract
The invention discloses a kind of exothermic material, the exothermic material includes the component of following weight percentage: graphene 3%~5%, binder 90%~94%, nano-silver powder 2%~3%, nano silica 1%~2%；The invention also discloses the preparation methods of a kind of heating layer, heating cable and heating layer.In this way, being applied to heating cable by the heating layer that exothermic material is prepared, it can improve the heating efficiency of heating cable, and carry out adstante febre in heating cable, electromagnetic radiation will not be generated, i.e., will not be caused damages to user.
Description
Technical field
The present invention relates to field of cables more particularly to the preparation sides of exothermic material, heating layer, heating cable and heating layer
Method.
Background technique
In actual life, electric heating has become a kind of common heating method, has in the daily life of people's life
It is widely used.
The heating layer of currently used heating cable includes alloy heat generating cable etc., however, alloy heat generating cable is heating
A certain amount of electromagnetic radiation can be generated in the process, and long-time service can be done harm to huamn body.
Above content is only used to facilitate the understanding of the technical scheme, and is not represented and is recognized that above content is existing skill
Art.
Summary of the invention
The main purpose of the present invention is to provide the preparation sides of a kind of exothermic material, heating layer, heating cable and heating layer
Method, it is intended to which a certain amount of electromagnetic radiation can be generated in use by solving current heating cable, and long-time service can be to human body
The problem of causing damages.
To achieve the goals above, the embodiment of the invention provides a kind of exothermic material, the exothermic material includes following
The component of weight percent: graphene 3%~5%, binder 90%~94%, nano-silver powder 2%~3%, nanometer titanium dioxide
Silicon 1%~2%.
Optionally, the exothermic material includes the component of following weight percentage: graphene 4%, binder 92%, nanometer
Silver powder 2.5%, nano silica 1.5%.
Optionally, the binder includes at least one of silicon rubber, silicone resin or polyolefin.
To achieve the goals above, the embodiment of the invention also provides a kind of heating layers, and the heating layer is by above-mentioned hair
Hot material is prepared.
To achieve the goals above, the embodiment of the invention also provides a kind of heating cable, the heating cable includes leading
Line and above-mentioned heating layer；
Wherein, the heating layer is coated on the periphery of the conducting wire, and in the heating layer filled with graphene and
Nano-silver powder.
Optionally, the conducting wire includes the iron core being arranged from the inside to the outside, copper-clad layer and tin coating, the area of the iron core
It is the 57% of the wire glass, the area of the copper-clad layer is the 40% of the wire glass, and the area of the tin coating is
The 3% of the wire glass.
Optionally, the heating cable further includes the shielded layer for being coated on the heating layer periphery, and the shielded layer is plating
Nickel-copper wire weaves, and the diameter of the nickel plating copper wire is 0.02mm~2.60mm.
Optionally, the heating cable further includes the insulating layer and protective layer for being successively coated on the shielded layer periphery, institute
Stating insulating layer is at least one of polyvinyl chloride or polytetrafluoroethylene (PTFE), and the protective layer is polyvinyl chloride or silicon rubber or gathers
At least one of tetrafluoroethene.
To achieve the goals above, the embodiment of the invention also provides a kind of preparation methods of heating layer, which is characterized in that
The preparation method of the heating layer includes:
Following raw materials: graphene 3%~5%, binder 90%~94%, nano silver are weighed according to following weight percent
Powder 2%~3%, nano silica 1%~2%；
The weighed graphene, the binder, the nano-silver powder and the nano silica are passed through into height
Fast mixing machine is sufficiently mixed, and obtains mixed material, and extruder fusion plastification is added in the mixed material；
By the mixed material after fusion plastification by co-extrusion mouth mold curtain coating, cooling, tempering, thickness measuring, draw, batch,
Process is cut, the heating layer is obtained.
Optionally, the mixed material by after fusion plastification by co-extrusion mouth mold curtain coating, cooling, tempering, thickness measuring,
In the step of drawing, batch, cutting process, obtain the heating layer, the forming temperature of the heating layer is 240 DEG C~255 DEG C,
The cooling temperature of the heating layer is 30 DEG C~50 DEG C.
The preparation method of exothermic material provided in an embodiment of the present invention, heating layer, heating cable and heating layer, the fever
Material includes the component of following weight percentage: graphene 3%~5%, binder 90%~94%, and nano-silver powder 2%~
3%, nano silica 1%~2%, and heating layer is prepared, above-mentioned heating layer is applied to heating cable, it can improves
The heating efficiency of heating cable, and adstante febre is carried out in heating cable, electromagnetic radiation will not be generated, i.e., user will not be caused to endanger
Evil.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in heating cable of embodiment of the present invention section；
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Firstly, being summarized to the preparation method of heating layer provided in an embodiment of the present invention.
A kind of heating layer is provided in the present embodiment, and above-mentioned heating layer is prepared by exothermic material, i.e. heating material
Component of the material including following weight percentage: graphene 3%~5%, binder 90%~94%, nano-silver powder 2%~3%,
Nano silica 1%~2%.Wherein, the binder includes at least one of silicon rubber, silicone resin or polyolefin.
In one embodiment, the nano-silver powder can be replaced copper nanoparticle, nano-nickel powder etc., and there is no restriction herein.
In one embodiment, the heating layer the preparation method comprises the following steps:
Following raw materials: graphene 3%~5%, binder 90%~94%, nano silver are weighed according to following weight percent
Powder 2%~3%, nano silica 1%~2%；Wherein, the binder includes in silicon rubber, silicone resin or polyolefin
It is at least one.
The weighed graphene, the binder, the nano-silver powder and the nano silica are passed through into height
Fast mixing machine is sufficiently mixed, and obtains mixed material, and extruder fusion plastification is added in the mixed material；
By the mixed material after fusion plastification by co-extrusion mouth mold curtain coating, cooling, tempering, thickness measuring, draw, batch,
Process is cut, the heating layer is obtained.
In one embodiment, the forming temperature of the heating layer is 240 DEG C~255 DEG C, the cooling temperature of the heating layer
It is 30 DEG C~50 DEG C.Specifically, above-mentioned forming temperature is 250 DEG C, and above-mentioned cooling temperature is 40 DEG C, but specific value can basis
Environment temperature or operating temperature are adjusted, as long as forming temperature is in the range of 240 DEG C~255 DEG C, cooling temperature is at 30 DEG C
In the range of~50 DEG C, there is no restriction herein.
In one embodiment, when heating layer obtained above is applied to heating cable, the fever of heating cable can be improved
Efficiency, and adstante febre is carried out in heating cable, electromagnetic radiation will not be generated, i.e., will not be caused damages to user.
Embodiment 1
In one embodiment, the preparation method of the heating layer includes:
Following raw materials: graphene 3%, binder 94%, nano-silver powder 2%, nanometer are weighed according to following weight percent
Silica 1 %；Wherein, the binder includes at least one of silicon rubber, silicone resin or polyolefin.
The weighed graphene, the binder, the nano-silver powder and the nano silica are passed through into height
Fast mixing machine is sufficiently mixed, and obtains mixed material A, and extruder fusion plastification is added in the mixed material A；
By the mixed material A after fusion plastification by co-extrusion mouth mold curtain coating, cooling, tempering, thickness measuring, draw, batch,
Process is cut, the heating layer is obtained.
In one embodiment, the forming temperature of the heating layer is 240 DEG C~255 DEG C, the cooling temperature of the heating layer
It is 30 DEG C~50 DEG C.Specifically, above-mentioned forming temperature is 250 DEG C, and above-mentioned cooling temperature is 40 DEG C, but specific value can basis
Environment temperature or operating temperature are adjusted, as long as forming temperature is in the range of 240 DEG C~255 DEG C, cooling temperature is at 30 DEG C
In the range of~50 DEG C, there is no restriction herein.
In one embodiment, when heating layer obtained above is applied to heating cable, the fever of heating cable can be improved
Efficiency can reach 90%, and carry out adstante febre in heating cable, will not generate electromagnetic radiation, i.e., will not cause to user
Harm.
Embodiment 2
In one embodiment, the preparation method of the heating layer includes:
Following raw materials: graphene 5%, binder 90%, nano-silver powder 3%, nanometer are weighed according to following weight percent
Silica 2%；Wherein, the binder includes at least one of silicon rubber, silicone resin or polyolefin.
The weighed graphene, the binder, the nano-silver powder and the nano silica are passed through into height
Fast mixing machine is sufficiently mixed, and obtains mixed material B, and extruder fusion plastification is added in the mixed material B；
By the mixed material B after fusion plastification by co-extrusion mouth mold curtain coating, cooling, tempering, thickness measuring, draw, batch,
Process is cut, the heating layer is obtained.
In one embodiment, the forming temperature of the heating layer is 240 DEG C~255 DEG C, the cooling temperature of the heating layer
It is 30 DEG C~50 DEG C.Specifically, above-mentioned forming temperature is 250 DEG C, and above-mentioned cooling temperature is 40 DEG C, but specific value can basis
Environment temperature or operating temperature are adjusted, as long as forming temperature is in the range of 240 DEG C~255 DEG C, cooling temperature is at 30 DEG C
In the range of~50 DEG C, there is no restriction herein.
In one embodiment, when heating layer obtained above is applied to heating cable, the fever of heating cable can be improved
Efficiency can reach 92%, and carry out adstante febre in heating cable, will not generate electromagnetic radiation, i.e., will not cause to user
Harm.
Embodiment 3
In one embodiment, the preparation method of the heating layer includes:
Following raw materials: graphene 3.5%, binder 93% are weighed according to following weight percent, nano-silver powder 2% is received
Rice silica 1 .5%；Wherein, the binder includes at least one of silicon rubber, silicone resin or polyolefin.
The weighed graphene, the binder, the nano-silver powder and the nano silica are passed through into height
Fast mixing machine is sufficiently mixed, and obtains mixed material C, and extruder fusion plastification is added in the mixed material C；
By the mixed material C after fusion plastification by co-extrusion mouth mold curtain coating, cooling, tempering, thickness measuring, draw, batch,
Process is cut, the heating layer is obtained.
In one embodiment, the forming temperature of the heating layer is 240 DEG C~255 DEG C, the cooling temperature of the heating layer
It is 30 DEG C~50 DEG C.Specifically, above-mentioned forming temperature is 251 DEG C, and above-mentioned cooling temperature is 41 DEG C, but specific value can basis
Environment temperature or operating temperature are adjusted, as long as forming temperature is in the range of 240 DEG C~255 DEG C, cooling temperature is at 30 DEG C
In the range of~50 DEG C, there is no restriction herein.
In one embodiment, when heating layer obtained above is applied to heating cable, the fever of heating cable can be improved
Efficiency can reach 94%, and carry out adstante febre in heating cable, will not generate electromagnetic radiation, i.e., will not cause to user
Harm.
Embodiment 4
In one embodiment, the preparation method of the heating layer includes:
Following raw materials: graphene 4.5%, binder 91% are weighed according to following weight percent, nano-silver powder 3% is received
Rice silica 1 .5%；Wherein, the binder includes at least one of silicon rubber, silicone resin or polyolefin.
The weighed graphene, the binder, the nano-silver powder and the nano silica are passed through into height
Fast mixing machine is sufficiently mixed, and obtains mixed material D, and extruder fusion plastification is added in the mixed material D；
By the mixed material D after fusion plastification by co-extrusion mouth mold curtain coating, cooling, tempering, thickness measuring, draw, batch,
Process is cut, the heating layer is obtained.
In one embodiment, the forming temperature of the heating layer is 240 DEG C~255 DEG C, the cooling temperature of the heating layer
It is 30 DEG C~50 DEG C.Specifically, above-mentioned forming temperature is 251 DEG C, and above-mentioned cooling temperature is 41 DEG C, but specific value can basis
Environment temperature or operating temperature are adjusted, as long as forming temperature is in the range of 240 DEG C~255 DEG C, cooling temperature is at 30 DEG C
In the range of~50 DEG C, there is no restriction herein.
In one embodiment, when heating layer obtained above is applied to heating cable, the fever of heating cable can be improved
Efficiency can reach 96%, and carry out adstante febre in heating cable, will not generate electromagnetic radiation, i.e., will not cause to user
Harm.
Embodiment 5
In one embodiment, the preparation method of the heating layer includes:
Following raw materials: graphene 4%, binder 92% are weighed according to following weight percent, nano-silver powder 2.5% is received
Rice silica 1 .5%；Wherein, the binder includes at least one of silicon rubber, silicone resin or polyolefin.
The weighed graphene, the binder, the nano-silver powder and the nano silica are passed through into height
Fast mixing machine is sufficiently mixed, and obtains mixed material E, and extruder fusion plastification is added in the mixed material E；
By the mixed material E after fusion plastification by co-extrusion mouth mold curtain coating, cooling, tempering, thickness measuring, draw, batch,
Process is cut, the heating layer is obtained.
In one embodiment, the forming temperature of the heating layer is 240 DEG C~255 DEG C, the cooling temperature of the heating layer
It is 30 DEG C~50 DEG C.Specifically, above-mentioned forming temperature is 252 DEG C, and above-mentioned cooling temperature is 42 DEG C, but specific value can basis
Environment temperature or operating temperature are adjusted, as long as forming temperature is in the range of 240 DEG C~255 DEG C, cooling temperature is at 30 DEG C
In the range of~50 DEG C, there is no restriction herein.
In one embodiment, when heating layer obtained above is applied to heating cable, the fever of heating cable can be improved
Efficiency can reach 99%, and carry out adstante febre in heating cable, will not generate electromagnetic radiation, i.e., will not cause to user
Harm.
Embodiment 6
Based on above-mentioned all embodiments, Fig. 1 is the structural schematic diagram of heating cable of the embodiment of the present invention.It is sent out in the present embodiment
The section of electric heating cable can be bandlet shape, rectangle, ellipse, rounded diamond etc., and it is ellipsoidal structure that Fig. 1, which shows section,
Heating cable.
Shown in referring to Fig.1, which includes conducting wire 1, heating layer 2, shielded layer 3, insulating layer 4 and protective layer 5,
In, the heating layer 2, the shielded layer 3, the insulating layer 4 and the protective layer 5 are successively coated on described lead from the inside to the outside
The periphery of line 1.
In one embodiment, graphene is filled in the heating layer 2.Wherein, the graphene is for generating heat, and phase
For traditional PTC (thermistor), metal alloy heating wire or carbon fiber etc., the graphene used in the embodiment of the present invention
The heating efficiency that generates heat is high, and the graphene will not generate electromagnetic radiation in adstante febre, to guarantee the heating cable in use process
In will not cause damages to user.
In one embodiment, in order to make the heating layer 2 have good electric conductivity, in the heating layer 2 also
Filled with nano-silver powder.Wherein, the partial size of nano-silver powder is less than 10nm in the present embodiment, so that the nano-silver powder has stabilization
Electric conductivity.Certainly, in other embodiments, it is also filled with copper nanoparticle, nano-nickel powder etc. in the heating layer 2, it can also
Guarantee that the heating layer 2 has good electric conductivity, there is no restriction herein.
In one embodiment, in order to make the stable structure of the heating layer 2, silicon rubber is also filled in the heating layer 2
Glue, so as to make the structure remained stable of heating layer 2.It certainly, in other embodiments, can be in the heating layer 2
Filled with silicone resin, polyolefin etc., the structure remained stable of the heating layer 2 can also be made, there is no restriction herein.
It is understood that being also filled with nano-silica in the heating layer 2 to improve the performance of the silicon rubber
SiClx, the network structure that the nano silica is formed by Nano grade silica can be used to inhibit the silicon rubber
Flowing, to improve the solidification rate of the silicon rubber, and increases the sealing performance of the silicon rubber.
As the preferred embodiment of the present invention, the graphene weight filled in the heating layer 2 is the heating layer 2
3%~5%, specifically, the graphene weight filled in the heating layer 2 is the 4.5% of the heating layer 2.
As the preferred embodiment of the present invention, the silicon rubber weight filled in the heating layer 2 is the heating layer 2
90%~94%, specifically, the silicon rubber weight filled in the heating layer 2 is the 92% of the heating layer 2.
As the preferred embodiment of the present invention, the nano-silver powder weight filled in the heating layer 2 is the heating layer 2
2%~3%, specifically, the nano-silver powder weight filled in the heating layer 2 be the heating layer 2 2.5%.
As the preferred embodiment of the present invention, the nano silica weight filled in the heating layer 2 is the hair
The 1%~2% of thermosphere 2, specifically, the nano silica weight filled in the heating layer 2 are the heating layer 2
1.5%.
In one embodiment, the conducting wire 1 includes iron core 11, copper-clad layer 12 and the tin coating 13 being arranged from the inside to the outside.
The i.e. described iron core 11 for providing magnetic conductivity, the copper-clad layer 12 for providing electric conductivity, the tin coating 13 for provide with
The resistance of contact, and entire 1 structure of conducting wire is protected not will receive extraneous corrosion, i.e., the described tin coating 13 is that the conducting wire 1 mentions
Corrosion resistance is supplied.
In one embodiment, in order to which the magnetic conductivity for making the iron core 11 reaches maximum intensity, i.e., by the face of the iron core 11
Product is the 56%~58% of 1 area of conducting wire.Specifically, the area of the iron core 11 is the 57% of 1 area of conducting wire.
In one embodiment, in order to which the electric conductivity for making the copper-clad layer 12 reaches maximum, i.e., by the face of the copper-clad layer 12
Product is the 39%~41% of 1 area of conducting wire.Specifically, the area of the copper-clad layer 12 is the 40% of 1 area of conducting wire.
It in one embodiment, i.e., will be described in order to which the resistance minimum and corrosion resistance that make the tin coating 13 reach most strong
The area of tin coating 13 is the 1%~5% of 1 area of conducting wire.Specifically, the area of the copper-clad layer 12 is the conducting wire 1
The 3% of area.
In one embodiment, the shielded layer 3 is coated on the periphery of the heating layer 2, and the shielded layer 3 is nickel plating copper wire
It weaves, and the diameter of the nickel plating copper wire is 0.02mm~2.60mm.Specifically, the nickel plating copper wire has fabulous resistance to
Corrosivity and mechanical performance, and the nickel coating of the nickel plating copper wire can reduce high frequency of the heating cable in frequency applications
Loss.
In one embodiment, the performance of the nickel plating copper wire is compared with traditional copper wire, is as follows:
Therefore, the nickel plating copper wire used in the present embodiment has better tensile strength and yield strength, and its resistance
It is small.
In one embodiment, the insulating layer 4, the protective layer 5 are successively coated on the periphery of the shielded layer 3.Wherein,
The insulating layer 4 is at least one of polyvinyl chloride or polytetrafluoroethylene (PTFE), and the protective layer 5 is polyvinyl chloride or silicon rubber
Or at least one of polytetrafluoroethylene (PTFE), specifically there is no restriction in the present patent application.
In an embodiment of the present invention, the heating cable includes including conducting wire 1, heating layer 2, shielded layer 3, insulating layer 4
And protective layer 5, and graphene is filled in the heating layer 2.In this way, by the heating layer 2 fill graphene into
Row fever, so that the heating efficiency of the heating cable is high, and the graphene will not generate electromagnetic radiation in adstante febre, to protect
Demonstrate,proving the heating cable in use will not cause damages to user.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent article or equivalent process transformation made by bright description are applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (10)
1. a kind of exothermic material, which is characterized in that the exothermic material includes the component of following weight percentage: graphene 3%
~5%, binder 90%~94%, nano-silver powder 2%~3%, nano silica 1%~2%.
2. exothermic material as described in claim 1, which is characterized in that the exothermic material includes the group of following weight percentage
Point: graphene 4%, binder 92%, nano-silver powder 2.5%, nano silica 1.5%.
3. such as the described in any item exothermic materials of claim 1-2, which is characterized in that the binder includes silicon rubber, silicon tree
At least one of rouge or polyolefin.
4. a kind of heating layer, which is characterized in that the heating layer is prepared by the described in any item exothermic materials of claim 1-3
It arrives.
5. a kind of heating cable, which is characterized in that the heating cable includes conducting wire and fever as claimed in claim 4
Layer；
Wherein, the heating layer is coated on the periphery of the conducting wire, and graphene and nanometer are filled in the heating layer
Silver powder.
6. heating cable as claimed in claim 5, which is characterized in that the conducting wire includes the iron core being arranged from the inside to the outside, packet
Layers of copper and tin coating, the area of the iron core are the 57% of the wire glass, and the area of the copper-clad layer is the conducting wire
The 40% of area, the area of the tin coating are the 3% of the wire glass.
7. heating cable as claimed in claim 5, which is characterized in that the heating cable further includes being coated on the heating layer
The shielded layer of periphery, the shielded layer be nickel plating proof copper-wire braided form, and the diameter of the nickel plating copper wire be 0.02mm~
2.60mm。
8. heating cable as claimed in claim 5, which is characterized in that the heating cable further includes successively being coated on the screen
The insulating layer and protective layer of layer periphery are covered, the insulating layer is at least one of polyvinyl chloride or polytetrafluoroethylene (PTFE), and described
Protective layer is polyvinyl chloride or at least one of silicon rubber or polytetrafluoroethylene (PTFE).
9. a kind of preparation method of heating layer, which is characterized in that the preparation method of the heating layer includes:
Following raw materials: graphene 3%~5%, binder 90%~94%, nano-silver powder are weighed according to following weight percent
2%~3%, nano silica 1%~2%；
The weighed graphene, the binder, the nano-silver powder and the nano silica is mixed by high speed
Conjunction machine is sufficiently mixed, and obtains mixed material, and extruder fusion plastification is added in the mixed material；
By the mixed material after fusion plastification by co-extrusion mouth mold curtain coating, cooling, tempering, thickness measuring, draw, batch, cut
Process obtains the heating layer.
10. the preparation method of heating layer as claimed in claim 9, which is characterized in that it is described will be described mixed after fusion plastification
Close material by co-extrusion mouth mold curtain coating, cooling, tempering, thickness measuring, draw, batch, cutting process, obtain the heating layer the step of
In, the forming temperature of the heating layer is 240 DEG C~255 DEG C, and the cooling temperature of the heating layer is 30 DEG C~50 DEG C.
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