CN108084614A - A kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable - Google Patents
A kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable Download PDFInfo
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- CN108084614A CN108084614A CN201711196524.2A CN201711196524A CN108084614A CN 108084614 A CN108084614 A CN 108084614A CN 201711196524 A CN201711196524 A CN 201711196524A CN 108084614 A CN108084614 A CN 108084614A
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- self limiting
- heat cable
- temperature
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- 239000004020 conductor Substances 0.000 title claims abstract description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 30
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 30
- YTZKOQUCBOVLHL-UHFFFAOYSA-N tert-butylbenzene Chemical compound CC(C)(C)C1=CC=CC=C1 YTZKOQUCBOVLHL-UHFFFAOYSA-N 0.000 claims abstract description 30
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 16
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 15
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 15
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims abstract description 14
- 235000019394 potassium persulphate Nutrition 0.000 claims abstract description 14
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229960004889 salicylic acid Drugs 0.000 claims abstract description 13
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims abstract description 8
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 7
- 230000004927 fusion Effects 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 229920002521 macromolecule Polymers 0.000 description 4
- 230000002528 anti-freeze Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
-
- 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
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/146—Conductive polymers, e.g. polyethylene, thermoplastics
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable, include the component of following mass fraction：100 parts of polytetrafluoroethylene (PTFE), 2~6 parts of graphene, 11~17 parts of nano silicon dioxide, 0.2~1.5 part of dibutyl phthalate, 0.5~2.0 part of zinc stearate, salicylic acid are to 0.2~0.8 part of tert-butyl benzene fat, 0.1~0.5 part of potassium peroxydisulfate.Preparation process：The polytetrafluoroethylene (PTFE) master batch, graphene and the nano silicon dioxide that quantitatively weigh are put into heating fusion apparatus and heat melting；The dibutyl phthalate quantitatively weighed, zinc stearate, salicylic acid are uniformly mixed tert-butyl benzene fat and potassium peroxydisulfate, then input is thoroughly mixed；It is sent into screw extruder and squeezes out, and be submerged in cooling oil and carry out being cooled to 120~150 DEG C, then take out to be placed in air from cooling oil and be cooled to room temperature.Entirety heating property rate of descent of the invention is relatively low.
Description
Technical field
It is particularly a kind of to be used for self limiting temperature heat tracing the present invention relates to a kind of accompanying-heat cable macromolecule conducting material technical field
The PTC high-molecular conductive material of cable.
Background technology
Accompanying-heat cable is a kind of using electric power as the energy, carries out heating power using alloy resistance wire to reach heating or guarantor
The construction of cable product of temp effect；Accompanying-heat cable is widely used in liquid object and conveys antifreeze guarantor with tank body in the duct
Temperature maintains the occasions such as technological temperature, heating highway, ramp antifreeze anti-skidding, crossing is antifreeze, eaves and floor heating.From limit
Warm accompanying-heat cable is mainly by two conductive cores, the PTC high molecular materials being distributed between two conductive cores and package PTC high
The insulating layer of molecular material is formed, and when the power is turned on, internal PTC high molecular materials expanded by heating, resistance becomes larger, and reduces fever
Power reduces temperature；When the temperature decreases, internal PTC high molecular materials contract on cooling, resistance become smaller, and increase heating power,
Temperature is made to increase, so as to have the function that automatically adjust temperature.
The deficiency that the PTC high-molecular conductive material of self limiting temperature accompanying-heat cable is primarily present in the prior art is：PTC high scores
Subconductivity material can expand with heat and contract with cold repeatedly at work, therefore the whole of material extends most important, the conventional PTC of shrinkage
After macromolecule conducting material works long hours, it may appear that local electrical connection is obstructed, and PTC high-molecular conductive material is caused integrally to be sent out
The problem of hot property declines.
The content of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of PTC macromolecules for self limiting temperature accompanying-heat cable
Conductive material can improve the whole extension shrinkage of material, the whole hair of PTC high-molecular conductive material after working long hours
Hot property rate of descent is relatively low.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable includes the component of following mass fraction：
100 parts of polytetrafluoroethylene (PTFE)
2~6 parts of graphene
11~17 parts of nano silicon dioxide
0.2~1.5 part of dibutyl phthalate.
As being further improved for above-mentioned technical proposal, the component of following mass fraction is further included：
0.5~2.0 part of zinc stearate
Salicylic acid is to 0.2~0.8 part of tert-butyl benzene fat
0.1~0.5 part of potassium peroxydisulfate.
As being further improved for above-mentioned technical proposal, include the component of following mass fraction：
100 parts of polytetrafluoroethylene (PTFE)
3.5 parts of graphene
14 parts of nano silicon dioxide
0.8 part of dibutyl phthalate
1.2 parts of zinc stearate
Salicylic acid is to 0.3 part of tert-butyl benzene fat
0.3 part of potassium peroxydisulfate.
As being further improved for above-mentioned technical proposal, following preparation process is further included：
Step 1: the polytetrafluoroethylene (PTFE) master batch, graphene and the nano silicon dioxide that quantitatively weigh are put into heating fusion apparatus
In, heating melts to polytetrafluoroethylene (PTFE) master batch, graphene and nano silicon dioxide and is sufficiently mixed；
Step 2: by the dibutyl phthalate quantitatively weighed, zinc stearate, salicylic acid to tert-butyl benzene fat and potassium peroxydisulfate
It is uniformly mixed, then puts into the mixture of step 1 preparation, be thoroughly mixed；
Step 3: mixture made from step 2 is sent into screw extruder, mixture is squeezed out, and is submerged to cooling oil
In carry out being cooled to 120~150 DEG C, then taken out from cooling oil and be placed in air and be cooled to room temperature.
As being further improved for above-mentioned technical proposal, in step 1, pass through screw extruding stirring thing when heating
Material, and heating ramp rate is 30~60 DEG C/min, and 20~30 minutes are kept the temperature after being warming up to 330~350 DEG C.
As being further improved for above-mentioned technical proposal, in step 2, make the temperature of the mixture of step 1 preparation first
It is maintained between 300~320 DEG C, then puts into the dibutyl phthalate, zinc stearate, salicylic acid of mixing to tert-butyl benzene
Fat and potassium peroxydisulfate, screw extruding stir 2~5 minutes.
As being further improved for above-mentioned technical proposal, in step 3, mixture made from step 2 is sent into Screw Extrusion
Temperature is not less than 290 DEG C when in equipment, and the mixture temperature that screw extruder squeezes out is 200~230 DEG C.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable provided by the present invention, by adding nano-silica
SiClx can improve the whole extension shrinkage of material, replace traditional graphite material by using graphene, can ensure
PTC high-molecular conductive material has preferable electric conductivity, PTC after working long hours in the case of higher extension shrinking percentage
The whole heating property rate of descent of macromolecule conducting material is relatively low.
Specific embodiment
Below in conjunction with specific embodiments come be further described the present invention technology contents.
Specific embodiment 1
A kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable that the present embodiment is provided, including following mass parts
Several components：
100 parts of polytetrafluoroethylene (PTFE)
6 parts of graphene
17 parts of nano silicon dioxide
1.5 parts of dibutyl phthalate
2.0 parts of zinc stearate
Salicylic acid is to 0.8 part of tert-butyl benzene fat
0.5 part of potassium peroxydisulfate.
Further include following preparation process：
Step 1: the polytetrafluoroethylene (PTFE) master batch, graphene and the nano silicon dioxide that quantitatively weigh are put into heating fusion apparatus
In, heating melts to polytetrafluoroethylene (PTFE) master batch, graphene and nano silicon dioxide and is sufficiently mixed；Pass through screw rod when heating
Stirring material is squeezed, and heating ramp rate is 30~60 DEG C/min, and 20~30 minutes are kept the temperature after being warming up to 330~350 DEG C.
Step 2: by the dibutyl phthalate quantitatively weighed, zinc stearate, salicylic acid to tert-butyl benzene fat and over cure
Sour potassium is uniformly mixed, and is then put into the mixture of step 1 preparation, is thoroughly mixed；First prepare step 1 mixed
The temperature for closing object is maintained between 300~320 DEG C, then puts into the dibutyl phthalate, zinc stearate, salicylic acid of mixing
To tert-butyl benzene fat and potassium peroxydisulfate, screw extruding stirs 2~5 minutes.
Step 3: mixture made from step 2 is sent into screw extruder, mixture is squeezed out, and is submerged to cold
But carry out being cooled to 120~150 DEG C in oil, then taken out from cooling oil and be placed in air and be cooled to room temperature；Step 2 is made
Mixture be sent into temperature when in screw extruder not less than 290 DEG C, the mixture temperature that screw extruder squeezes out be 200
~230 DEG C.
PTC high-molecular conductive material made from the present embodiment under conditions of 0 DEG C of room temperature, 1 k Ω of resistance, 0.5 A of electric current,
Surface heat temperature maintains 135~140 DEG C；After when continuous firing 1000 is small, surface heat temperature maintains 125~131 DEG C.
Specific embodiment 2
A kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable that the present embodiment is provided, including following mass parts
Several components：
100 parts of polytetrafluoroethylene (PTFE)
2 parts of graphene
11 parts of nano silicon dioxide
0.2 part of dibutyl phthalate
0.5 part of zinc stearate
Salicylic acid is to 0.2 part of tert-butyl benzene fat
0.1 part of potassium peroxydisulfate.
Preparation process is identical with specific embodiment 1.
PTC high-molecular conductive material made from the present embodiment under conditions of 0 DEG C of room temperature, 1 k Ω of resistance, 0.5 A of electric current,
Surface heat temperature maintains 110~125 DEG C；After when continuous firing 1000 is small, surface heat temperature maintains 105~114 DEG C.
Specific embodiment 3
A kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable that the present embodiment is provided, including following mass parts
Several components：
100 parts of polytetrafluoroethylene (PTFE)
3.5 parts of graphene
14 parts of nano silicon dioxide
0.8 part of dibutyl phthalate
1.2 parts of zinc stearate
Salicylic acid is to 0.3 part of tert-butyl benzene fat
0.3 part of potassium peroxydisulfate.
Preparation process is identical with specific embodiment 1.
PTC high-molecular conductive material made from the present embodiment under conditions of 0 DEG C of room temperature, 1 k Ω of resistance, 0.5 A of electric current,
Surface heat temperature maintains 137~141 DEG C；After when continuous firing 1000 is small, surface heat temperature maintains 135~140 DEG C.
Above the preferable of the present invention is implemented to be illustrated, certainly, the present invention can also use and above-mentioned implementation
The different form of mode, the equivalent conversion that those skilled in the art are made on the premise of without prejudice to spirit of the invention
Or corresponding change, it should all belong to the scope of protection of the present invention interior.
Claims (7)
1. a kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable, which is characterized in that including following mass fraction
Component：
100 parts of polytetrafluoroethylene (PTFE)
2~6 parts of graphene
11~17 parts of nano silicon dioxide
0.2~1.5 part of dibutyl phthalate.
2. a kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable according to claim 1, feature exist
In：Further include the component of following mass fraction：
0.5~2.0 part of zinc stearate
Salicylic acid is to 0.2~0.8 part of tert-butyl benzene fat
0.1~0.5 part of potassium peroxydisulfate.
3. a kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable according to claim 2, feature exist
In including the component of following mass fraction：
100 parts of polytetrafluoroethylene (PTFE)
3.5 parts of graphene
14 parts of nano silicon dioxide
0.8 part of dibutyl phthalate
1.2 parts of zinc stearate
Salicylic acid is to 0.3 part of tert-butyl benzene fat
0.3 part of potassium peroxydisulfate.
4. a kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable according to Claims 2 or 3, feature
It is, further includes following preparation process：
Step 1: the polytetrafluoroethylene (PTFE) master batch, graphene and the nano silicon dioxide that quantitatively weigh are put into heating fusion apparatus
In, heating melts to polytetrafluoroethylene (PTFE) master batch, graphene and nano silicon dioxide and is sufficiently mixed；
Step 2: by the dibutyl phthalate quantitatively weighed, zinc stearate, salicylic acid to tert-butyl benzene fat and potassium peroxydisulfate
It is uniformly mixed, then puts into the mixture of step 1 preparation, be thoroughly mixed；
Step 3: mixture made from step 2 is sent into screw extruder, mixture is squeezed out, and is submerged to cooling oil
In carry out being cooled to 120~150 DEG C, then taken out from cooling oil and be placed in air and be cooled to room temperature.
5. a kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable according to claim 4, feature exist
In：In step 1, material is stirred by screw extruding when heating, and heating ramp rate is 30~60 DEG C/min, is risen
Temperature is to keeping the temperature 20~30 minutes after 330~350 DEG C.
6. a kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable according to claim 4, feature exist
In：In step 2, the temperature of the mixture of step 1 preparation is made to be maintained between 300~320 DEG C first, then input mixes
To tert-butyl benzene fat and potassium peroxydisulfate, screw extruding stirs 2~5 minutes i.e. for dibutyl phthalate, zinc stearate, salicylic acid
It can.
7. a kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable according to claim 4, feature exist
In：In step 3, mixture made from step 2 is sent into temperature when in screw extruder, and, not less than 290 DEG C, Screw Extrusion is set
The standby mixture temperature squeezed out is 200~230 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711196524.2A CN108084614A (en) | 2017-11-25 | 2017-11-25 | A kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711196524.2A CN108084614A (en) | 2017-11-25 | 2017-11-25 | A kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable |
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| Publication Number | Publication Date |
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| CN108084614A true CN108084614A (en) | 2018-05-29 |
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| CN201711196524.2A Withdrawn CN108084614A (en) | 2017-11-25 | 2017-11-25 | A kind of PTC high-molecular conductive material for self limiting temperature accompanying-heat cable |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604281A (en) * | 2012-02-14 | 2012-07-25 | 南昌航空大学 | Preparation method of crosslinking-free polymer-based high-temperature PTC (positive temperature coefficient) material |
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2017
- 2017-11-25 CN CN201711196524.2A patent/CN108084614A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604281A (en) * | 2012-02-14 | 2012-07-25 | 南昌航空大学 | Preparation method of crosslinking-free polymer-based high-temperature PTC (positive temperature coefficient) material |
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Application publication date: 20180529 |