CN106084376A - A kind of aging-resistant self limiting temperature accompanying-heat cable - Google Patents
A kind of aging-resistant self limiting temperature accompanying-heat cable Download PDFInfo
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- CN106084376A CN106084376A CN201610413901.2A CN201610413901A CN106084376A CN 106084376 A CN106084376 A CN 106084376A CN 201610413901 A CN201610413901 A CN 201610413901A CN 106084376 A CN106084376 A CN 106084376A
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- ptc
- aging
- temperature
- core ribbon
- resistant self
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- 230000032683 aging Effects 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 32
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- 239000002184 metal Substances 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 230000004888 barrier function Effects 0.000 claims abstract description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000013019 agitation Methods 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 9
- -1 polypropylene Polymers 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 9
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 6
- 239000006227 byproduct Substances 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000002243 precursor Substances 0.000 claims description 6
- 235000011149 sulphuric acid Nutrition 0.000 claims description 6
- 239000001117 sulphuric acid Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 5
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 claims description 5
- 229960004643 cupric oxide Drugs 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- XNINAOUGJUYOQX-UHFFFAOYSA-N 2-cyanobutanoic acid Chemical compound CCC(C#N)C(O)=O XNINAOUGJUYOQX-UHFFFAOYSA-N 0.000 claims description 3
- 229910001152 Bi alloy Inorganic materials 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 235000012054 meals Nutrition 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
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- 238000001291 vacuum drying Methods 0.000 claims description 3
- 239000005751 Copper oxide Substances 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 229910000431 copper oxide Inorganic materials 0.000 claims description 2
- 238000005453 pelletization Methods 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 241000218195 Lauraceae Species 0.000 claims 1
- 235000017858 Laurus nobilis Nutrition 0.000 claims 1
- 235000005212 Terminalia tomentosa Nutrition 0.000 claims 1
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 claims 1
- 239000002131 composite material Substances 0.000 description 7
- 239000011231 conductive filler Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- 238000010438 heat treatment Methods 0.000 description 2
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- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229940116364 hard fat Drugs 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
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- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- 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
-
- 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
- C08K2201/001—Conductive additives
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Organic Insulating Materials (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of aging-resistant self limiting temperature accompanying-heat cable, including PTC core ribbon, being coated on the insulating barrier outside described PTC core ribbon, metal screen layer and wear-resistance protective sleeve layer successively, PTC core ribbon is made up of ptc layer that two heating-wires being arranged in parallel are outer with being coated on it；Cable material prepared by the present invention has possessed excellent heat conductivility, can quickly transmit heat, it is to avoid local temperature is too high, and the intensity of this cable material, toughness and ageing resistace have also been obtained the biggest lifting simultaneously, and application prospect is extensive, is worthy to be popularized.
Description
Technical field
The present invention relates to cable material technical field, particularly relate to a kind of aging-resistant self limiting temperature accompanying-heat cable.
Background technology
Accompanying-heat cable is widely used in many fields, needs in oil, chemical industry, steam power plant etc. as mainly utilized in industrial aspect
The place that liquid substance solidification/flowing velocity in pipeline to be prevented or tank is slow, is mainly used in extinguishing pipe in terms of communal facility
The heat tracing in road, can be used for heating of house and the antifreeze aspect of yard piping in winter at civilian aspect.The core of accompanying-heat cable is
Its structure and its electrothermal part ptc material of making.Ptc material refers to the one that the resistance value of material rises with the rising of temperature
It is held essentially constant when the resistance of thermo-sensitive material, i.e. material or resistivity are within the scope of a certain specific temperature or only small quantity
Change, and when temperature reaches near certain specific knee pointy temperature of material, the resistivity of material can be in the several years or ten
Undergoing mutation within the scope of the narrow temperature in several years, resistivity increases rapidly the 103-109 order of magnitude.Ptc material is broadly divided into pottery
Porcelain matrix PTC material and high molecular based PTC material two types.Wherein, high molecular based PTC material is owing to having easily processing, manufacturing
The advantages such as cost is relatively low, conductive extensions is big, room temperature resistivity is low and demonstrate huge using value.But, prior art
In, high molecular based PTC material and macromolecule accompanying-heat cable there is also the defects such as stability is poor, PTC intensity is relatively low.
In " preparation of conduction _ anti-electrostatic polymer nano composite material and performance study thereof " literary composition, author utilizes low melting point
The conductive filler such as metal, CNT prepares conductive anti-static polymer composites and fiber, it is proposed that new preparation
Method and new principle, the low-melting-point metal use electrical conductivity height, easily processing is as conductive filler, by melt blending and solid phase
The methods such as stretching, prepare composite fibre, show that polymer/low melting point conducting metal composite fibre has resistivity along with stretching
The raising of multiplying power and the character that reduces, compare with the composite fibre not containing low conduction melting-point fibers, the intensity of its composite fibre
All increase with elongation at break.Metal is significantly reduced by interpolation CNT and nano imvite in composite fibre
Grain diameter so that composite fibre obtains more excellent electrical property and mechanical property.Conductive filler is in polymeric matrix
Dispersibility be the deciding factor whether affecting ptc material function admirable, affect development and the application of ptc material.PTC material
The stability of material and whether to have NTC effect be to apply to topmost problem in accompanying-heat cable.And author is not examined in the whole text
Considering to this problem, this is also problem to be solved by this invention.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of aging-resistant self limiting temperature accompanying-heat cable.
The present invention is achieved by the following technical solutions:
A kind of aging-resistant self limiting temperature accompanying-heat cable, including PTC core ribbon, is coated on the insulating barrier outside described PTC core ribbon, gold successively
Belonging to screen layer and wear-resistance protective sleeve layer, PTC core ribbon is by two heating-wires being arranged in parallel and is coated on its outer ptc layer structure
Become；Described ptc material is made up of the raw material of following weight portion: polypropylene 30-35, sn-bi alloy powder 4-6, aluminium stearate
0.2-0.4, CNT 13-16, carboxyl butyronitrile powdered rubber 9-12, concentrated sulphuric acid 12-16, white carbon black graft 5-7, polyamide
12-15, bismuth metal 5-7, nano cupric oxide 3.4-5, methyl diphenylene diisocyanate 2.1-2.5, dibutyl tin laurate
0.4-0.7, polyvinyl alcohol 3-4, high pressure low density polyhexene 70-75, dimethyl sulfoxide is appropriate, deionized water is appropriate.
Described a kind of aging-resistant self limiting temperature accompanying-heat cable, is made up of step in detail below:
(1) CNT is added in the mixed solution of concentrated sulphuric acid and concentrated nitric acid volume ratio 1:1, ultrasonic agitation 24h, in 140 DEG C
Condensing reflux 1h, the most ultrasonic with deionized water, filter, wash several times, until filtrate be dried in an oven after neutrality standby
With；
(2) being added in dimethyl sulfoxide by modified carbon nano-tube prepared by step (1), vacuum nitrogen filling gas, after ultrasonic agitation 5h
It is added dropwise over methyl diphenylene diisocyanate and dibutyl tin laurate, controls temperature in 110 DEG C of magnetic agitation 4-5h, fall
Low temperature adds polyvinyl alcohol in 90 DEG C time, continues magnetic agitation 5-7h, and filtered while hot, by product vacuum drying at 60 DEG C；
(3) by drying 6-8h at polypropylene in an oven 80 DEG C, granule it is cut into after cooling, by metal bismuth meal, aluminium stearate, nanometer
The polypropylene granules of copper oxide and pretreatment, according to proportioning mix homogeneously in homogenizer, is then added to double screw extruder
Extruding pelletization, then granule is dried at 80 DEG C 4-5h, be placed in capillary rheometer, make mixing precursor, by precursor
It is clamped on fixture, adds in hot tank at the environment of 170-180 DEG C, with the speed Uniform Tension fiber of 10mm/min；
(4) product prepared by product residue each component of formula ratio, step (2) prepared and step (3) is melted by banbury
Melting blended, temperature is 160-175 DEG C, and the time is 15-25min, then by single screw extrusion machine pelletize, then by particle at 10-
Under the rate of extrusion of 15m/min, it is cooled to room temperature by extrusion die extrusion stranding material
The invention have the advantage that and by the present invention in that with low-melting-point metal as conductive filler, in conjunction with melting mixing with solid
The means stretched mutually, are prepared for conduction, antistatic composite fiber so that it is have good intensity and elongation at break, and have
Excellent electric conductivity and mechanical property, solve metal and cause electrical conductivity to decline with matrix material poor compatibility, easily oxidation
Problem, and by introduce ultra fine powder rubber and modified graphene, it is achieved high volume fill, significantly improve volume get rid of
The efficiency of effect, and help difficult scattered nanoparticle in polymerization species dispersion, the perfect conductive mesh of metal/conductive material
Network, considerably reduces conduction excess effusion value, improves the electrical stability of material, and the present invention is in order to improve the strong of polymeric material
Degree, the carbon nano tube surface in acidifying utilizes isocyanates as bridge joint reagent grafting polyvinyl alcohol, obtains polyvinyl alcohol graft copolymerized
CNT, enhances the compatibility in matrix material, and improves tensile strength, cable material tool prepared by the present invention
Standby excellent heat conductivility, can quickly transmit heat, it is to avoid local temperature is too high, simultaneously this cable material intensity,
Toughness and ageing resistace have also been obtained the biggest lifting, and application prospect is extensive, is worthy to be popularized.
Detailed description of the invention
A kind of aging-resistant self limiting temperature accompanying-heat cable, including PTC core ribbon, is coated on the insulation outside described PTC core ribbon successively
Layer, metal screen layer and wear-resistance protective sleeve layer, PTC core ribbon is by two heating-wires being arranged in parallel and is coated on its outer PTC material
The bed of material is constituted；Described ptc material is made up of the raw material of following weight portion (kilogram): polypropylene 30, sn-bi alloy powder 4, hard
Fat acid aluminum 0.2, CNT 13, carboxyl butyronitrile powdered rubber 9, concentrated sulphuric acid 12, white carbon black graft 5, polyamide 12, bismuth metal 5,
Nano cupric oxide 3.4, methyl diphenylene diisocyanate 2.1, dibutyl tin laurate 0.4, polyvinyl alcohol 3, height force down close
Spend polyhexene 70, dimethyl sulfoxide is appropriate, deionized water is appropriate.
Described a kind of aging-resistant self limiting temperature accompanying-heat cable, is made up of step in detail below:
(1) CNT is added in the mixed solution of concentrated sulphuric acid and concentrated nitric acid volume ratio 1:1, ultrasonic agitation 24h, in 140 DEG C
Condensing reflux 1h, the most ultrasonic with deionized water, filter, wash several times, until filtrate be dried in an oven after neutrality standby
With；
(2) being added in dimethyl sulfoxide by modified carbon nano-tube prepared by step (1), vacuum nitrogen filling gas, after ultrasonic agitation 5h
It is added dropwise over methyl diphenylene diisocyanate and dibutyl tin laurate, controls temperature in 110 DEG C of magnetic agitation 4h, reduction
Temperature adds polyvinyl alcohol in 90 DEG C time, continues magnetic agitation 5h, and filtered while hot, by product vacuum drying at 60 DEG C；
(3) by drying 6h at polypropylene in an oven 80 DEG C, granule it is cut into after cooling, by metal bismuth meal, aluminium stearate, nano oxygen
The polypropylene granules of change copper and pretreatment, according to proportioning mix homogeneously in homogenizer, is then added to double screw extruder and squeezes
Go out pelletize, then granule dried at 80 DEG C 4h, be placed in capillary rheometer, make mixing precursor, by precursor clamp
On fixture, add in hot tank at the environment of 170 DEG C, with the speed Uniform Tension fiber of 10mm/min；
(4) product prepared by product residue each component of formula ratio, step (2) prepared and step (3) is melted by banbury
Melting blended, temperature is 160 DEG C, and the time is 15min, then by single screw extrusion machine pelletize, then by particle squeezing at 10m/min
Go out under speed, be cooled to room temperature by extrusion die extrusion stranding material.
The performance test of this accompanying-heat cable is as follows:
Hot strength (MPa): 22.8；Elongation at break (%): 367；Oxygen index (OI) (%): 38；Heat stability: by 10 DEG C to 99 DEG C
After circulating 300 times back and forth, electric cable heating amount maintains 95%；Specific insulation (Ω .cm): 92；Operating temperature >=160 DEG C.
Claims (2)
1. an aging-resistant self limiting temperature accompanying-heat cable, it is characterised in that include PTC core ribbon, is coated on described PTC core ribbon successively
Outer insulating barrier, metal screen layer and wear-resistance protective sleeve layer, PTC core ribbon is by two heating-wires being arranged in parallel and is coated on outside it
Ptc layer constitute；Described ptc material is made up of the raw material of following weight portion: polypropylene 30-35, sn-bi alloy powder
4-6, aluminium stearate 0.2-0.4, CNT 13-16, carboxyl butyronitrile powdered rubber 9-12, concentrated sulphuric acid 12-16, white carbon black graft
5-7, polyamide 12-15, bismuth metal 5-7, nano cupric oxide 3.4-5, methyl diphenylene diisocyanate 2.1-2.5, two Laurels
Acid dibutyl tin 0.4-0.7, polyvinyl alcohol 3-4, high pressure low density polyhexene 70-75, dimethyl sulfoxide is appropriate, deionized water is suitable
Amount.
A kind of aging-resistant self limiting temperature accompanying-heat cable, it is characterised in that by step system in detail below
Prepare into:
(1) CNT is added in the mixed solution of concentrated sulphuric acid and concentrated nitric acid volume ratio 1:1, ultrasonic agitation 24h, in 140 DEG C
Condensing reflux 1h, the most ultrasonic with deionized water, filter, wash several times, until filtrate be dried in an oven after neutrality standby
With；
(2) being added in dimethyl sulfoxide by modified carbon nano-tube prepared by step (1), vacuum nitrogen filling gas, after ultrasonic agitation 5h
It is added dropwise over methyl diphenylene diisocyanate and dibutyl tin laurate, controls temperature in 110 DEG C of magnetic agitation 4-5h, fall
Low temperature adds polyvinyl alcohol in 90 DEG C time, continues magnetic agitation 5-7h, and filtered while hot, by product vacuum drying at 60 DEG C；
(3) by drying 6-8h at polypropylene in an oven 80 DEG C, granule it is cut into after cooling, by metal bismuth meal, aluminium stearate, nanometer
The polypropylene granules of copper oxide and pretreatment, according to proportioning mix homogeneously in homogenizer, is then added to double screw extruder
Extruding pelletization, then granule is dried at 80 DEG C 4-5h, be placed in capillary rheometer, make mixing precursor, by precursor
It is clamped on fixture, adds in hot tank at the environment of 170-180 DEG C, with the speed Uniform Tension fiber of 10mm/min；
(4) product prepared by product residue each component of formula ratio, step (2) prepared and step (3) is melted by banbury
Melting blended, temperature is 160-175 DEG C, and the time is 15-25min, then by single screw extrusion machine pelletize, then by particle at 10-
Under the rate of extrusion of 15m/min, it is cooled to room temperature by extrusion die extrusion stranding material.
Priority Applications (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107227018A (en) * | 2017-05-27 | 2017-10-03 | 清远初曲智能科技有限公司 | A kind of carbon nano-tube modification nylon fire proofing and preparation method thereof |
| CN108366440A (en) * | 2017-12-30 | 2018-08-03 | 东莞市明骏智能科技有限公司 | Carbon nanotube electric heating assembly and its application and electrical heating dress |
| CN109754928A (en) * | 2019-01-17 | 2019-05-14 | 江西沪昌电缆有限公司 | A kind of processing method of High-strength pure copper cable |
Citations (1)
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| CN103113668A (en) * | 2013-01-07 | 2013-05-22 | 安邦电气集团有限公司 | Polymer matrix conductive composite material and method for preparing temperature self-limiting heat tracing cable from same |
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| CN103113668A (en) * | 2013-01-07 | 2013-05-22 | 安邦电气集团有限公司 | Polymer matrix conductive composite material and method for preparing temperature self-limiting heat tracing cable from same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107227018A (en) * | 2017-05-27 | 2017-10-03 | 清远初曲智能科技有限公司 | A kind of carbon nano-tube modification nylon fire proofing and preparation method thereof |
| CN107227018B (en) * | 2017-05-27 | 2018-05-11 | 清远初曲智能科技有限公司 | A kind of carbon nano-tube modification nylon fire proofing and preparation method thereof |
| CN108366440A (en) * | 2017-12-30 | 2018-08-03 | 东莞市明骏智能科技有限公司 | Carbon nanotube electric heating assembly and its application and electrical heating dress |
| CN109754928A (en) * | 2019-01-17 | 2019-05-14 | 江西沪昌电缆有限公司 | A kind of processing method of High-strength pure copper cable |
| CN109754928B (en) * | 2019-01-17 | 2020-06-16 | 江西沪昌电缆有限公司 | Processing method of high-strength pure copper cable |
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Application publication date: 20161109 |