CN108129732A - A kind of self-regulating heating cable material of strong PTC effects and preparation method thereof - Google Patents
A kind of self-regulating heating cable material of strong PTC effects and preparation method thereof Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
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- H05B3/40—Heating elements having the shape of rods or tubes
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Abstract
The invention belongs to technical fields prepared by CABLE MATERIALS, provide a kind of self-regulating heating cable material of strong PTC effects and preparation method thereof.This method first carries out polystyrene porous microballoon magnetic processing, then the dispersion liquid containing nano carbon black is deposited on by electrostatic spray in the hole of magnetic polystyrene porous microsphere, then it is granulated with high density polyethylene (HDPE), polymethyl methacrylate blending extrusion, and it is aided with dispersibility and degree of orientation that alternating magnetic field improves nano carbon black particle, the self-regulating heating cable material of strong PTC effects is made.Compared with conventional method, the good fluidity of conductive black particle in the self-regulating heating cable material of the preparation of the present invention, dispersity and degree of orientation in the polymer is good, and PTC effects are strong, performance is stablized, flexible simultaneously preferable, processing performance is excellent, and weatherability is good, and preparation process is simple, energy consumption is relatively low, of low cost, is suitble to industrialized production.
Description
Technical field
The invention belongs to technical fields prepared by CABLE MATERIALS, provide a kind of self-regulating heating cable material of strong PTC effects
And preparation method thereof.
Background technology
At a temperature of oil, chemical medium can be caused by the heat dissipations during the long distance delivery process and prolonged storage
Drop, can increase the viscosity of viscous material, and easily-crystallized stock may then make material generate crystallization, to avoid such case,
System dispersed heat must be replenished in time, i.e., system continuously be heated, and traditional adjoining pipe heating
Shi Wendu is uneven, leads to hydraulic performance decline, therefore self-regulating heating cable material is increasingly becoming that the world is widely applied advanced to have put guarantor
Adiabator, is the ideal energy saving material that the heat tracings engineering such as pipeline uses, its use can to the safety of oil, chemical production device
There is very big Practical significance by operation.
The structure of self controlled heating cable is in flat, inside has two parallel metal cores to be generated heat as electrode by PTC
Material is embedded and is isolated, and is cladded with one layer of insulating sheath, just obtains practical basic model self controlled heating cable.As needed also
Shielded layer or corrosion-resistant protective case can be increased outside basic model self controlled heating cable.Self controlled heating cable is removed with low
Outside fundamental characteristics required by voltage cable, should also have following performance indicator：Highest maintains temperature, highest bearing temperature, highest
Surface temperature, maximal use length.Heat cable type and pattern be diversified, from the point of view of its heater element it is linear and
Non-linear point；It there is Series FPB and parallel FPB from the point of view of circuit connection.Linear fever element is usually made of metal material,
The high electric resistance alloy wire rod of such as copper, nickel, chromium, aluminium, iron, also there is pure copper and copper alloy low resistance wire rod；Non-linear heater element is
Cross-linking conductive plastics with PTC effects, also polycrystal chip component.Wherein PTC effects CABLE MATERIALS is temp auto-controlled fever
The Main way of CABLE MATERIALS research and development.
High molecular PTC CABLE MATERIALS is a kind of novel ptc material, by the organic high molecular polymer material that insulate and certain
Inorganic conductive filler is combined, and wherein high molecular material is basis material, plays skeleton and filling carrier；Inorganic filler is
Conductive compositions are electrical current carriers.Its not only combine the electric conductivity of inorganic filler and the excellent mechanical property of high molecular material and
The new physical property that processing performance, also two one pack system persons do not have, have room temperature resistivity is low, PTC Performance Strengths are high,
NTC phenomenons can be eliminated, is of low cost, electric conductivity that is easily prepared and processing and can adjust on a large scale material.Macromolecule
PTC CABLE MATERIALSs conductive filler mainly has carbon black, graphite, metal powder or fiber and certain electroconductive oxides etc..Therefore,
The approach for preparing ptc material often adds in a large amount of conductive fillers, high molecular material is modified, this is also macromolecule
The main research of PTC CABLE MATERIALSs.
It has been obtained in terms of self-regulating heating cable material technology of preparing, especially high molecular PTC CABLE MATERIALS both at home and abroad at present
Certain effect.Wherein Li Zhen et al. has invented a kind of flame-proof weather-resisting PTC CABLE MATERIALSs and preparation method（Chinese invention patent application
Number 201610756216.X）, consist of the following compositions：Thermoplastic polyurethane, maleic anhydride inoculated polypropylene, ethyl vinyl acetate second
Alkene copolymer, graphene microchip, compatilizer, fire retardant, antioxidant, ultra-violet absorber and lubricant, CABLE MATERIALS is through mixing, mixing
The processes such as refining, extrusion, are made under special process parameter.In addition, Ge Ji equality human hairs understand that a kind of PTC types carbon black macromolecule is answered
Condensation material（Chinese invention patent application number 201611181489.2）, raw material, which forms, is：Polypropylene, high density polyethylene (HDPE), carbon are fine
Tie up T300, carbon black N750, butyl titanate, glycerine, isopropanol, triacetamide, p-methyl benzenesulfonic acid, antioxidant 1010, aluminium hydroxide,
Triazine carbon forming agent, dibutyl maleate and medical stone powder.
As it can be seen that high molecular PTC CABLE MATERIALS of the prior art be mostly rigidity, lack softness can winding capacity, limit it
In the use of mobile field；The conductive fillers such as common carbon black particle and macromolecule matrix interaction force are smaller, and with compared with
Strong agglomeration, matrix viscosity reduces during high temperature, and CB particle buildups form new conductive network and generate NTC phenomenons, and
There are the defects of preparation process is complicated, cost is higher, performance is unstable and durability is not high.
Invention content
For such case, it is proposed that a kind of self-regulating heating cable material of strong PTC effects and preparation method thereof, mainly
It is to be acted on by means of magnetic polystyrene porous microsphere by externally-applied magnetic field, is carried on the mobility status of carbon black particle therein
Improved, improve carbon black particle dispersity in the polymer and degree of orientation, weakened NTC phenomenons, it is excellent to obtain performance
Different self-regulating heating cable material.
To achieve the above object, specific technical solution of the present invention is as follows：
A kind of preparation method of the self-regulating heating cable material of strong PTC effects is first carried out at magnetism polystyrene porous microballoon
Dispersion liquid containing nano carbon black, is then deposited on by electrostatic spray in the hole of magnetic polystyrene porous microsphere, so by reason
It is granulated afterwards with high density polyethylene (HDPE), polymethyl methacrylate blending extrusion, and is aided with alternating magnetic field and improves nano carbon black particle
Dispersibility and degree of orientation, the self-regulating heating cable material of strong PTC effects is made, preparation is as follows：
（1）Between polystyrene porous microballoon is put into the magnetic head of electromagnet, be heated to certain temperature, adjust between magnetic head away from
From, unlatching magnetic field power supply, and pressure is applied to microballoon, it keeps temperature, pressure and magnetic field after a certain period of time, closes power supply and simultaneously take out
Microballoon, cooled to room temperature are then placed in heat drying in baking oven, and magnetic polystyrene porous microsphere is made；
（2）Nano carbon black, dispersant, deionized water by certain parts by weight are mixed, stirred using glass bar, then adds in breast
In change machine, nano carbon black dispersion liquid is made, step is then deposited on by electrostatic spray（1）The magnetic polystyrene of gained is porous
In the hole of microballoon, complex microsphere is made；
（3）By step（2）Three screw rods are added in after the complex microsphere of gained and high density polyethylene (HDPE), polymethyl methacrylate premix
In extruder, alternating magnetic field processing is aided with while blending extrusion, nano carbon black particle is improved in high density polyethylene (HDPE) and gathers
Then dispersity and degree of orientation in methyl methacrylate carry out pelletizing, drying, you can oneself of strong PTC effects is made
Temperature control heating cable material.
Preferably, step（1）The magnetic field intensity is 0.5 ~ 2T, and distance is 10 ~ 15cm between magnetic head.
Preferably, step（1）The heating temperature is 40 ~ 50 DEG C, and pressure is 8 ~ 10MPa, and processing time is 18 ~ 22min.
Preferably, step（1）The temperature of the oven drying is 75 ~ 80 DEG C, and the time is 8 ~ 12h.
Preferably, step（2）The dispersant is hyper-dispersant, can be in polyether-type, polyacrylate or polyester-type
One kind.
Preferably, step（2）In each parts by weight of raw materials be that 15 ~ 30 parts by weight of nano carbon black, are gone at 2 ~ 3 parts by weight of dispersant
27 ~ 58 parts by weight of ionized water, 25 ~ 40 parts by weight of magnetic polystyrene porous microsphere.
Preferably, step（2）The rotor of the mulser is three-level rotor, and rotating speed, which should be gradually classified, during emulsification increases to
7000 ~ 8000r/min, emulsification times are 2 ~ 4min.
Preferably, step（2）The electrostatic spray uses air-stream spraying, and outlet temperature is 80 ~ 90 DEG C, and spray disk is a diameter of
Deposition drying is realized in 120 ~ 180mm, 2 ~ 3s.
Preferably, step（3）In each parts by weight of raw materials be 25 ~ 30 parts by weight of complex microsphere, high density polyethylene (HDPE) 30 ~ 55
Parts by weight, 20 ~ 40 parts by weight of polymethyl methacrylate.
Preferably, step（3）The screw rod of the three-screw extruder can be arranged for "-" type or the arrangement of falling isosceles triangle, single
A diameter of 40 ~ 50mm of screw rod.
Preferably, step（3）The magnetic induction intensity of the alternating magnetic field is 0.02 ~ 0.08T, and frequency is 40 ~ 70Hz.
The present invention also provides the self-regulating heating cables of a kind of strong PTC effects that a kind of above-mentioned preparation method is prepared
Material.
By the self-regulating heating cable material for preparing of the present invention and graphene heating cable material and carbon fiber heating cable material
Resistivity, PTC intensity, particle orientation degree and cost are compared, as shown in table 1, it is seen then that temp auto-controlled hair prepared by the present invention
The PTC effects of electric heating cable material are strong, and heating effect is good and performance is stablized, while of low cost.
Table 1：
The present invention provides a kind of self-regulating heating cable material of strong PTC effects and preparation method thereof, compared with prior art,
The characteristics of prominent and excellent effect are：
1. the good fluidity of the conductive black particle in self-regulating heating cable material prepared by the present invention, dispersion in the polymer
State and degree of orientation are good, have been obviously reduced NTC phenomenons, and PTC effects are strong.
2. the work of magnetic polystyrene porous microsphere and externally-applied magnetic field is attached in the preparation of the present invention by carbon black particle
With gained CABLE MATERIALS is flexible preferably, and processing performance is excellent.
3. the performance of the automatic control heating cable material of the present invention is stablized, weatherability is good, and service life is long.
4. the preparation process of the present invention is simple, energy consumption is relatively low, of low cost, is suitble to industrialized production.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to following example.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
Between polystyrene porous microballoon is put into the magnetic head of electromagnet, 45 DEG C are heated to, the distance between magnetic head is adjusted to
12cm opens magnetic field power supply and applies pressure, keeps temperature, is handled under conditions of pressure 9MPa, magnetic field intensity is 1T
20min closes power supply and takes out microballoon, and cooled to room temperature is then placed in baking oven at a temperature of 78 DEG C dry 10h, system
Obtain magnetic polystyrene porous microsphere；25kg nano carbon blacks, 2kg polyether-types hyper-dispersant, the mixing of 43kg deionized waters are taken, is used
Glass bar stirs, and then adds in three-level rotor mulser, in the emulsified reaction 3min of the rotating speed of 7500r/min, is made and receives
Rice carbon black dispersion liquid is then more in 85 DEG C of magnetic polystyrenes by being deposited on 30kg in air-stream spraying, 2s in outlet temperature
In the hole of hole microballoon, complex microsphere is made；Then 28kg complex microspheres and 42kg high density polyethylene (HDPE)s, the poly- methyl of 30kg are taken
Screw rod is added in after methyl acrylate premix to arrange for "-" type, in the three-screw extruder of a diameter of 45mm of single screw rod,
It is aided with the alternating magnetic field processing that magnetic induction intensity is 0.05T, frequency is 50Hz while blending extrusion, then carries out pelletizing, does
It is dry, you can the self-regulating heating cable material of strong PTC effects is made；
Self-regulating heating cable material prepared by embodiment 1, test resistance rate, PTC intensity, particle orientation degree and cost obtain
The results are shown in Table 2.
Embodiment 2
Between polystyrene porous microballoon is put into the magnetic head of electromagnet, 40 DEG C are heated to, the distance between magnetic head is adjusted to
10cm opens magnetic field power supply and applies pressure, keeps temperature, is handled under conditions of pressure 8MPa, magnetic field intensity is 0.5T
22min closes power supply and takes out microballoon, and cooled to room temperature is then placed in baking oven at a temperature of 75 DEG C dry 12h, system
Obtain magnetic polystyrene porous microsphere；15kg nano carbon blacks, 3kg polyacrylates hyper-dispersant, 57kg deionized waters is taken to mix
It closes, is stirred using glass bar, then added in three-level rotor mulser, in the emulsified reaction 4min of the rotating speed of 7000r/min,
Nano carbon black dispersion liquid is made, then in outlet temperature in 80 DEG C of magnetic polyphenyl by being deposited on 25kg in air-stream spraying, 3s
In the hole of ethylene porous microsphere, complex microsphere is made；Then 25kg complex microspheres and 55kg high density polyethylene (HDPE)s, 20kg are taken
Screw rod is added in after polymethyl methacrylate premix as the arrangement of falling isosceles triangle, the Tri-screw Extrusion of a diameter of 40mm of single screw rod
In machine, the alternating magnetic field processing that magnetic induction intensity is 0.02T, frequency is 40Hz is aided with while blending extrusion, is then carried out
Pelletizing, drying, you can the self-regulating heating cable material of strong PTC effects is made；
Self-regulating heating cable material prepared by embodiment 2, test resistance rate, PTC intensity, particle orientation degree and cost obtain
The results are shown in Table 2.
Embodiment 3
Between polystyrene porous microballoon is put into the magnetic head of electromagnet, 50 DEG C are heated to, the distance between magnetic head is adjusted to
15cm opens magnetic field power supply and applies pressure, keeps temperature, is handled under conditions of pressure 10MPa, magnetic field intensity is 2T
18min closes power supply and takes out microballoon, and cooled to room temperature is then placed in baking oven at a temperature of 80 DEG C dry 8h, is made
Magnetic polystyrene porous microsphere；30kg nano carbon blacks, 2kg polyester type ultra-dispersant agents, the mixing of 28kg deionized waters are taken, using glass
Glass stick stirs, and then adds in three-level rotor mulser, and in the emulsified reaction 2min of the rotating speed of 8000r/min, nanometer is made
Carbon black dispersion liquid, it is then porous in 90 DEG C of magnetic polystyrenes by being deposited on 40kg in air-stream spraying, 2s in outlet temperature
In the hole of microballoon, complex microsphere is made；Then 30kg complex microspheres and 30kg high density polyethylene (HDPE)s, the poly- methyl-props of 40kg are taken
It adds in screw rod after e pioic acid methyl ester premix to arrange for "-" type, in the three-screw extruder of a diameter of 50mm of single screw rod, altogether
It is aided with the alternating magnetic field processing that magnetic induction intensity is 0.08T, frequency is 70Hz while mixed extrusion, then carries out pelletizing, drying,
It can be prepared by the self-regulating heating cable material of strong PTC effects；
Self-regulating heating cable material prepared by embodiment 3, test resistance rate, PTC intensity, particle orientation degree and cost obtain
The results are shown in Table 2.
Embodiment 4
Between polystyrene porous microballoon is put into the magnetic head of electromagnet, 42 DEG C are heated to, the distance between magnetic head is adjusted to
13cm opens magnetic field power supply and applies pressure, keeps temperature, is handled under conditions of pressure 9MPa, magnetic field intensity is 1.5T
19min closes power supply and takes out microballoon, and cooled to room temperature is then placed in baking oven at a temperature of 76 DEG C dry 11h, system
Obtain magnetic polystyrene porous microsphere；18kg nano carbon blacks, 2kg polyether-types hyper-dispersant, the mixing of 52kg deionized waters are taken, is used
Glass bar stirs, and then adds in three-level rotor mulser, in the emulsified reaction 3min of the rotating speed of 7200r/min, is made and receives
Rice carbon black dispersion liquid is then more in 82 DEG C of magnetic polystyrenes by being deposited on 28kg in air-stream spraying, 2s in outlet temperature
In the hole of hole microballoon, complex microsphere is made；Then 27kg complex microspheres and 51kg high density polyethylene (HDPE)s, the poly- methyl of 22kg are taken
Addition screw rod is the arrangement of falling isosceles triangle, in the three-screw extruder of a diameter of 45mm of single screw rod after methyl acrylate premix,
Be aided with the processing of magnetic induction intensity is 0.04T, frequency is 50Hz alternating magnetic field while blending extrusion, then carry out pelletizing,
It is dry, you can the self-regulating heating cable material of strong PTC effects is made；
Self-regulating heating cable material prepared by embodiment 4, test resistance rate, PTC intensity, particle orientation degree and cost obtain
The results are shown in Table 2.
Embodiment 5
Between polystyrene porous microballoon is put into the magnetic head of electromagnet, 49 DEG C are heated to, the distance between magnetic head is adjusted to
11cm opens magnetic field power supply and applies pressure, keeps temperature, is handled under conditions of pressure 10MPa, magnetic field intensity is 1.5T
19min closes power supply and takes out microballoon, and cooled to room temperature is then placed in baking oven at a temperature of 78 DEG C dry 9h, is made
Magnetic polystyrene porous microsphere；28kg nano carbon blacks, 3kg polyacrylates hyper-dispersant, the mixing of 33kg deionized waters are taken,
It is stirred using glass bar, then added in three-level rotor mulser, in the emulsified reaction 4min of the rotating speed of 7800r/min, system
Nano carbon black dispersion liquid is obtained, then in outlet temperature in 88 DEG C of magnetic polyphenyl second by being deposited on 36kg in air-stream spraying, 3s
In the hole of alkene porous microsphere, complex microsphere is made；Then 28kg complex microspheres is taken to gather with 36kg high density polyethylene (HDPE)s, 36kg
Screw rod is added in after methyl methacrylate premix as "-" type arrangement, the three-screw extruder of a diameter of 48mm of single screw rod
In, the alternating magnetic field processing that magnetic induction intensity is 0.07T, frequency is 60Hz is aided with while blending extrusion, is then cut
Grain, drying, you can the self-regulating heating cable material of strong PTC effects is made；
Self-regulating heating cable material prepared by embodiment 5, test resistance rate, PTC intensity, particle orientation degree and cost obtain
The results are shown in Table 2.
Embodiment 6
Between polystyrene porous microballoon is put into the magnetic head of electromagnet, 46 DEG C are heated to, the distance between magnetic head is adjusted to
13cm opens magnetic field power supply and applies pressure, keeps temperature, is handled under conditions of pressure 9MPa, magnetic field intensity is 1T
21min closes power supply and takes out microballoon, and cooled to room temperature is then placed in baking oven at a temperature of 77 DEG C dry 11h, system
Obtain magnetic polystyrene porous microsphere；23kg nano carbon blacks, 3kg polyester type ultra-dispersant agents, the mixing of 39kg deionized waters are taken, is used
Glass bar stirs, and then adds in three-level rotor mulser, in the emulsified reaction 3min of the rotating speed of 7500r/min, is made and receives
Rice carbon black dispersion liquid is then more in 85 DEG C of magnetic polystyrenes by being deposited on 35kg in air-stream spraying, 2s in outlet temperature
In the hole of hole microballoon, complex microsphere is made；Then 27kg complex microspheres and 41kg high density polyethylene (HDPE)s, the poly- methyl of 32kg are taken
Addition screw rod is the arrangement of falling isosceles triangle, in the three-screw extruder of a diameter of 45mm of single screw rod after methyl acrylate premix,
Be aided with the processing of magnetic induction intensity is 0.06T, frequency is 55Hz alternating magnetic field while blending extrusion, then carry out pelletizing,
It is dry, you can the self-regulating heating cable material of strong PTC effects is made；
Self-regulating heating cable material prepared by embodiment 6, test resistance rate, PTC intensity, particle orientation degree and cost obtain
The results are shown in Table 2.
Comparative example 1
Magnetic processing is not carried out to polystyrene porous microballoon, other preparation conditions are consistent with embodiment 6；
Self-regulating heating cable material prepared by comparative example 1, test resistance rate, PTC intensity, particle orientation degree and cost obtain
The results are shown in Table 2.
Table 2：
Claims (10)
1. a kind of preparation method of the self-regulating heating cable material of strong PTC effects, which is characterized in that first micro- to polystyrene porous
Ball carries out magnetic processing, and the dispersion liquid containing nano carbon black then is deposited on magnetic polystyrene porous microsphere by electrostatic spray
Hole in, then with high density polyethylene (HDPE), polymethyl methacrylate blending extrusion be granulated, and be aided with alternating magnetic field raising receive
The dispersibility and degree of orientation of rice carbon black particle, are made the self-regulating heating cable material of strong PTC effects, the specific steps of preparation are such as
Under：
（1）Between polystyrene porous microballoon is put into the magnetic head of electromagnet, be heated to certain temperature, adjust between magnetic head away from
From, unlatching magnetic field power supply, and pressure is applied to microballoon, it keeps temperature, pressure and magnetic field after a certain period of time, closes power supply and simultaneously take out
Microballoon, cooled to room temperature are then placed in heat drying in baking oven, and magnetic polystyrene porous microsphere is made；
（2）Nano carbon black, dispersant, deionized water by certain parts by weight are mixed, stirred using glass bar, then adds in breast
In change machine, nano carbon black dispersion liquid is made, step is then deposited on by electrostatic spray（1）The magnetic polystyrene of gained is porous
In the hole of microballoon, complex microsphere is made；Wherein, 15 ~ 30 parts by weight of nano carbon black, 2 ~ 3 parts by weight of dispersant, deionized water 27
~ 58 parts by weight, 25 ~ 40 parts by weight of magnetic polystyrene porous microsphere；
（3）By step（2）Three screw rods are added in after the complex microsphere of gained and high density polyethylene (HDPE), polymethyl methacrylate premix
In extruder, alternating magnetic field processing is aided with while blending extrusion, nano carbon black particle is improved in high density polyethylene (HDPE) and gathers
Then dispersity and degree of orientation in methyl methacrylate carry out pelletizing, drying, you can oneself of strong PTC effects is made
Temperature control heating cable material；Wherein, 25 ~ 30 parts by weight of complex microsphere, 30 ~ 55 parts by weight of high density polyethylene (HDPE), polymethylacrylic acid
20 ~ 40 parts by weight of methyl esters.
2. a kind of preparation method of the self-regulating heating cable material of strong PTC effects according to claim 1, it is characterised in that：
Step（1）The magnetic field intensity is 0.5 ~ 2T, and distance is 10 ~ 15cm between magnetic head.
3. a kind of preparation method of the self-regulating heating cable material of strong PTC effects according to claim 1, it is characterised in that：
Step（1）The heating temperature is 40 ~ 50 DEG C, and pressure is 8 ~ 10MPa, and processing time is 18 ~ 22min.
4. a kind of preparation method of the self-regulating heating cable material of strong PTC effects according to claim 1, it is characterised in that：
Step（1）The temperature of the oven drying is 75 ~ 80 DEG C, and the time is 8 ~ 12h.
5. a kind of preparation method of the self-regulating heating cable material of strong PTC effects according to claim 1, it is characterised in that：
Step（2）The dispersant is hyper-dispersant, is one kind in polyether-type, polyacrylate or polyester-type.
6. a kind of preparation method of the self-regulating heating cable material of strong PTC effects according to claim 1, it is characterised in that：
Step（2）The rotor of the mulser is three-level rotor, and rotating speed, which should be gradually classified, during emulsification increases to 7000 ~ 8000r/min,
Emulsification times are 2 ~ 4min.
7. a kind of preparation method of the self-regulating heating cable material of strong PTC effects according to claim 1, it is characterised in that：
Step（2）The electrostatic spray uses air-stream spraying, and outlet temperature is 80 ~ 90 DEG C, spray disk a diameter of 120 ~ 180mm, 2 ~ 3s
It is interior to realize deposition drying.
8. a kind of preparation method of the self-regulating heating cable material of strong PTC effects according to claim 1, it is characterised in that：
Step（3）The screw rod of the three-screw extruder can be "-" type arrangement or the arrangement of falling isosceles triangle, single screw rod a diameter of 40 ~
50mm。
9. a kind of preparation method of the self-regulating heating cable material of strong PTC effects according to claim 1, it is characterised in that：
Step（3）The magnetic induction intensity of the alternating magnetic field is 0.02 ~ 0.08T, and frequency is 40 ~ 70Hz.
10. the self-regulating heating cable material of strong PTC effects that any one of claim 1~9 preparation method is prepared.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114801263A (en) * | 2022-04-15 | 2022-07-29 | 安吉正源塑木装饰材料有限公司 | Bamboo charcoal fiber-polyethylene composite floor and preparation process thereof |
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| CN103467883A (en) * | 2013-08-26 | 2013-12-25 | 晶锋集团股份有限公司 | Lead-free termite-proof polyvinyl chloride cable material and preparation method thereof |
| CN104311938A (en) * | 2014-10-30 | 2015-01-28 | 安徽电信器材贸易工业有限责任公司 | Cable material with strong photostability and preparation method thereof |
| CN104867684A (en) * | 2015-04-02 | 2015-08-26 | 安徽江威精密制造有限公司 | Wasted-PVC-based electrode material with excellent charging and discharging performances and preparation method thereof |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103467883A (en) * | 2013-08-26 | 2013-12-25 | 晶锋集团股份有限公司 | Lead-free termite-proof polyvinyl chloride cable material and preparation method thereof |
| CN104311938A (en) * | 2014-10-30 | 2015-01-28 | 安徽电信器材贸易工业有限责任公司 | Cable material with strong photostability and preparation method thereof |
| CN104867684A (en) * | 2015-04-02 | 2015-08-26 | 安徽江威精密制造有限公司 | Wasted-PVC-based electrode material with excellent charging and discharging performances and preparation method thereof |
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| CN114801263A (en) * | 2022-04-15 | 2022-07-29 | 安吉正源塑木装饰材料有限公司 | Bamboo charcoal fiber-polyethylene composite floor and preparation process thereof |
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