CN101083854A - Nana intelligent temperature control cable material and process for producing - Google Patents
Nana intelligent temperature control cable material and process for producing Download PDFInfo
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- CN101083854A CN101083854A CNA2006100270951A CN200610027095A CN101083854A CN 101083854 A CN101083854 A CN 101083854A CN A2006100270951 A CNA2006100270951 A CN A2006100270951A CN 200610027095 A CN200610027095 A CN 200610027095A CN 101083854 A CN101083854 A CN 101083854A
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Abstract
The present invention discloses a intelligence temperature control cables nano-materials, and it is composed of five parts: the cable core which is made of tinned copper wire, the protective layer of the cable core which is made of polytetrafluoroethylene plastics containing conductive carbon black; the middle protective layer which is made of cross linking polyethylene plastic containing conductive carbon black; the grounding line which is made of tinned copper conductor wire winding outside the protective layer; external protective cover which is made of heat-resistant -105 deg.C PVC cable material. It has the functions of intelligent temperature control, and could be widely used in the heating insulation places, such as indoor heating, outdoor pipeline antifreeze, the temperature maintenance of oil exploitation, and land heating. It has following advantages, such as intelligent temperature control heating, insulation, fire-retardant, perfect stability of chemical resistance, good environmental adaptability, easy use, safe and reliability.
Description
[technical field]
The present invention relates to a kind of cable material, after particularly a kind of energising, after temperature rises to certain value, can stop automatically heating, when temperature is lower than certain value, the nana intelligent temperature control cable material that can heat up automatically again.
[background technology]
Cable is that electric power system is used to carry and distributes electric energy and as the usefulness that is connected between various electric equipments.The underground electrical network in city, the lead-out wire in power plant, interconnection, the power supply of industrial and mining enterprises inside and submarine transmission line etc. adopt the power cable power supply, cable product is a lot, mainly contains polyvinyl chloride cable, polyethylene insulated cable, cross-linked polyethylene insulated cable, fire-retardant, India-rubber cable etc.Along with the progress and the development of science and technology, people begin cable and heating wire are applied to heat supply heating and antifreeze aspect.But existing cable material exists poor stability, and power consumption is high, and heating effect is not good, uses problems such as inconvenience.
The present invention is for overcoming the above defective that exists, propose to adopt " a kind of nano temperature memory material " (seeing Chinese patent application 200510029442.x) to be compound in the insulating layer cable material, its principle and characteristics are: when conducting particles in " nano temperature memory material " and the polyethylene in the cable material, polyvinyl chloride, after the combination of materials such as rubber, form a kind of semi-conducting material, after semi-conducting material applies certain electric current and voltage, this semi-conducting material (cable) consumed power and rapid heating up, electric energy is converted into heat energy, when temperature reaches certain value, conductive particle is apart from increase in the semi-conducting material, and insulating barrier resistance sharply increases, and almost insulation is opened circuit, this moment, the insulating barrier electric current reduced, and temperature descends; When temperature continued to descend, distance reduced between the conducting particles, and resistance reduces, and electric current begins to increase, and temperature begins again to rise.Through repeatedly such, this semi-conducting material just forms " nanometer intelligent temperature " material with " temperature memory ".
[summary of the invention]
The objective of the invention is to overcome the deficiency of prior art; temperature memory material is used among the protective layer of cable; it is a kind of after temperature is increased to certain value that it is become; can reduce automatically; the nana intelligent temperature control cable material that when temperature is lower than certain value, can heat up automatically again; this new material is of many uses, have safe and reliable, low power consumption and other advantages.
The objective of the invention is to realize ground by following technical method:
Specifically, the present invention forms by five layers altogether
Ground floor is the zinc-plated copper conductor of its employing of cable core, or the aluminium alloy conductor material.But for flexibility and the tortuosity that strengthens cable core, the cable core lead adopts the many stranded Split Down of small diameter wire to use.
The second layer is the cable core protective layer, and it is to adopt the fluorine material that contains nanometer conductive carbon black.
Protective layer in the 3rd layer of cable, it is to be made by the crosslinked polyethylene that contains nanometer conductive carbon black.
The 4th layer of ground plane adopts zinc-plated copper conductor to be wrapped in outside the middle protective layer.
The making of cable conductor material.
Cable core material system adopts zinc-plated copper conductor or aluminium alloy conductor material, and single diameter is 0.05～0.4mm, is to improve fail safe, adopts many plying to use, and the radical of pooling capital is 5 and carries out Split Down to 40 by stranding machine that the diameter of cable core is controlled at 1～2.5mm.
The selection of the material of cable conductor protective layer.
The cable core insulating barrier is higher to material requirements, and it is protective layer that the present invention adopts polytetrafluoroethylplastic plastic, polytetrafluoroethylene: heatproof is-50～250 ℃, 200 ℃ of long-term serviceability temperatures, and its sheet resistance and volume resistance are all 〉=10
16, its flexibility is good, frangibility not, and useful life is up to more than 20 years.
Conductive carbon black and surface treatment that cable core protective layer and middle protective layer use.
The nanometer carbon black that the present invention adopts is the acetylene conductive carbon black, also can use superconduct carbon black or high electric conductivity carbon black.And their mixture.The particle diameter of carbon black is 30～200nm, resistivity 3.0, pH value 7～8.During its surface treatment, in carbon black, add earlier 0.1～3% butyl titanate, also can be with stearic acid or aluminic acid butyl ester.Generally speaking, dispersant butyl titanate addition is 1～2% of a carbon black weight ratio, during mixing, in homogenizer with 2500～3000 rev/mins rotating speed, mixed and stirred 1～3 hour, and carried out drying then, pulverize, screening, carbon black granules is evenly disperseed, do not reunite, be easy to evenly mix with plastics.
3) manufacturing of cable core protective layer.
The cable core protective layer is by the decentralized polyflon, and nanometer conductive carbon black mixes, and also must add 20～25% senior solvent naphtha for making fluoroplastics cold moudling.Add and take by weighing 100 parts of dispersed polytetrafluoroethylresins man-hour by weight, 10～15 parts of surface treated nanometer conductive carbon blacks.20～25 parts of senior solvent naphthas mix poly tetra fluororesin and nanometer conductive carbon black earlier, add senior solvent naphtha (kerosene or aviation gasoline) again and mix, and are pressed into the bar of mesopore then with cold press.Bar is packed in the pushing machine mould, insert core simultaneously in the hole of bar, start press cable core and bar are moved together, the thickness of cable core protective layer, is sent having coated cable into the vertical type sintering furnace while pushing from top to bottom by the control of pushing machine mouth mould.The sintering furnace height is 5～6 meters.Low high on the sintering furnace temperature, high temperature section is 380～400 ℃, and sintering time is 6～8 minutes, and to contain the diameter of insulating barrier be 2.0～3.5mm to cable core behind the sintering.
The preparation of nanometer conductive carbon black inner protective layer.
Middle protective layer is the core of invention; because the electric current and the heat that come from the cable core transmission make the nanometer conductive carbon black conduction on the one hand; simultaneously high pressure polyethylene plastic is heated; raise with temperature, as the vinyon expansion increase of inner protective layer, nanometer conductive carbon black is so that non-conductive at last; this moment, the temperature plastics that begin to descend shrank thereupon; distance between nanometer conductive carbon black goes on foot close again, so that become electric conductor, so-called memory temperature control is mainly realized by said process.
As the cable material of middle protective layer, mainly be cross-linked poly-ethylene cable material or with heat-resisting 80～90 ℃ of grade PVC CABLE MATERIALS.
The crosslinked polyethylene prescription that contains conductive carbon black.(by weight)
Polyethylene from high pressure process, HDPE 100
Nanometer conductive carbon black 30～200nm 25～40
Fire retardant antimonous oxide 2～4
Fire retardant decabromodiphenyl oxide 2～4
Antioxidant 618 0.5～1.5
Paraffin 2～4
The crosslinking agent cumyl peroxide, DCP 3～4
Carbon black described in the prescription and processing method are with recited above identical.
Preparation technology:
Take by weighing HDPE 100kg, add surface treated carbon black 25～40kg, each 2～4kg of fire retardant antimonous oxide and decabromodiphenyl oxide, antioxidant 618 0.5～1.5kg, paraffin 2～4kg and crosslink agent DCP 3～4kg stir in high speed spice machine, send the extruder extruding pelletization.Extruder charge door temperature is 150～160 ℃, and the stage casing is 170～175 ℃, and leading portion is 180～185 ℃, 185～190 ℃ of head temperatures, the billot extruded through head, with fervent technology pelletizing, go into water cooling after, send drying to remove surperficial moisture content again.
Middle protective layer CABLE MATERIALS is produced;
The head of used extruder is a T type structure, and the extruder extruded material is coated on the cable core by T pattern tool.Extruder charge door temperature is 150～160 ℃, and the stage casing temperature is 170～175 ℃, and leading portion is 180～185 ℃, 190～195 ℃ of head temperatures.Cable size after the coating is 4～6mm.
Crosslinking Treatment;
The cooled protective layer cable that is coated with is sent in the closed heat treatment drying tunnel and handled, and handling drying tunnel length is 40～50M, and temperature is 70～90 ℃, and steam pressure is 1.5-1.8Mpa, pines for promoting poly interlinkage adding.
Earth connection twines;
Earth connection adopts zinc-plated copper conductor, and diameter is 0.1～0.2mm, and on the external diameter with protective layer in single being wrapped in, it is in the middle of inner protective layer and the outer jointing jacket,
The making of external protection;
External protection adopts the polyvinyl chloride cable material (there is supply in market) of heat-resisting 105 ℃ of levels, adopts the technology of producing common cable to extrude coating, extrudes when coating.Extruder charge door temperature is 150～160, and the stage casing temperature is 170～175 ℃, and leading portion is 180～185 ℃, 190～195 ℃ of T type head temperatures.
The CABLE MATERIALS of extruding after the coating is wound into required nana intelligent temperature control cable material through the cooling spark test.
The application of nana intelligent temperature control cable material
Nana intelligent temperature control cable material is good heat-providing material, can be widely used in heating of house, yard piping is antifreeze, oilfield exploitation (being particularly suitable for the exploitation that winter, the oil field thickness froze oil), the heating of soil, the airport, railway, highway snow melting, aquaculture, vegetables, gardens, the heat supply of flower planting booth is warming etc.
Disclosed its advantage of a kind of nana intelligent temperature control cable material of the present invention is:
Adopt nanometer conductive material and technology advanced person, workable
Have intelligent temperature-control heat-providing, insulation, fire-retardant, intensity height, chemical resistance and environment resistant good, easy to use, safe and reliable
Heat conduction is fast, and energy consumption is low and even, and expense is few, alternative air-conditioning, hot-water heating, hot air heating.
Nonpoisonous and tasteless, far infrared transmissivity 80, useful health.
Can be widely used in indoor and outdoor heat supply heating, warming, be desirable heat-providing material.
[description of drawings]
The present invention is further described below in conjunction with drawings and Examples:
The nana intelligent temperature control cable material structural representation; See accompanying drawing 1.
[main element symbol description]
1. external protection (sheath)
2. earth connection
3. middle protective layer
4. cable core protective layer
5. cable core conductor
6. conductive carbon black particle
[embodiment]
The first step, the preparation of nana intelligent temperature control cable material cable core.
2. the nana intelligent temperature control cable material cable core is zinc-plated copper conductor or aluminium alloy conductor material, the diameter 0.05～0.4mm of unit, during use with 5 to 40 Split Down.The cable core diameter is controlled at 1～2.5mm.
They can be by following combination;
Second step, the preparation of cable core insulating barrier
Divide at 100 parts of polytetrafluoroethylene and to add 10～15 parts of surface treated nanometer conductive carbon blacks in the resin, after stirring, add 20～25 parts of senior solvent naphthas (kerosene or aviation gasoline) again, and fully mix, be pressed into the mesopore bar with mold cold, use for inserting cable core.
Bar is sent in the pushing machine mould, and cable core is inserted in the plup inlet simultaneously, starts the pushing machine, cable core and polytetrafluoroethylene bar are moved together, with the thickness that pushing machine mouth mould control polytetrafluoroethylene coats,, send into sintering in 5～6 meters high sintering furnaces of vertical type while pushing from top to bottom.Low high on the sintering furnace temperature, high temperature section is 380～400 ℃, and sintering time is 6～8 minutes, and to contain the diameter of insulating barrier be 2.5～3.5mm to cable core behind the sintering.
The 3rd step contained the middle protective layer preparation of nanometer conductive carbon black.
Nanometer conductive carbon black.
Used nanometer conductive carbon black is surface treated acetylene conductive carbon black or superconduct carbon black.High electric conductivity carbon black and their mixture.Black grain diameter is 30～200nm, resistivity≤3.0, pH value 7～8.
Contain protective layer material preparation in the nanometer conductive carbon black.
The prescription that contains the nanometer conductive carbon black crosslinked polyethylene, be by weight: 100 kilograms of polyethylene from high pressure processes, each 2-4 kilogram of nanometer conductive carbon black 25-40 kilogram fire retardant antimonous oxide and decabromodiphenyl oxide, antioxidant 618:0.5-1.5 kilogram, paraffin 3-4 kilogram, crosslink agent DCP 3-4 kilogram, its formula examples is as follows:
First produces cable granules;
To fill a prescription 2 is example.
Granulation; Take by weighing HDPE 100kg, add surface treated carbon black 40kg fire retardant antimonous oxide and each 4kg of decabromodiphenyl oxide, antioxidant 6181kg, paraffin 4kg and crosslink agent DCP 3kg stir in high speed spice machine, send extruding pelletization.Extruder charge door temperature is 150～160 ℃, and the stage casing is 170～175 ℃, and leading portion is 180～185 ℃, and 185～190 ℃ of head temperatures are extruded billot through head, with fervent technology pelletizing, go into water cooling after, send drying to remove surperficial moisture content, promptly get cable granules.
Second is coated with cable granules at the cable core insulating barrier makes insulating barrier.
The head of used extruder is a T type structure, and common cable technology is identical with producing.The extruder extruded material is coated on the cable core by T pattern tool.Extruder charge door temperature is 150～160 ℃, and the stage casing temperature is 170～175 ℃, and leading portion is 180～185 ℃, 190～195 ℃ of head temperatures.Diameter after the coating is 4～6mm.
The 3rd interlinkage is handled;
With protective layer cable in the cooled coating (also can take advantage of heat), send in the closed heat treatment drying tunnel, also claim crosslinked pipeline; drying tunnel length is 40～50M, and temperature is 70～90 ℃, and steam directly heats; heating steam pressure is 1.5-1.8Mpa, add pine for promoting poly crosslinked.
The prescription 1 that contains the nanometer conductive carbon black crosslinked polyethylene, prescription 3, the preparation method of prescription 4 is identical with prescription 2.
The enforcement of the 4th step earth connection;
Earth connection adopts zinc-plated copper conductor, and diameter is 0.1～0.2mm, is wrapped on the external diameter of inner protective layer, and it is in the middle of inner protective layer and the outer jointing jacket.
The making of the 5th step external protection;
Outer jointing jacket adopts the polyvinyl chloride cable material of heat-resisting 105 ℃ of levels, and the same technology of producing cable that adopts is extruded coating; extruder charge door temperature is 150～160 ℃; the stage casing temperature is 170～175 ℃, and leading portion is 180～185 ℃, 190～195 ℃ of T type head temperatures.Extrude and coat after the cooling spark test is wound into required nana intelligent temperature control cable material.
Claims (7)
1. a nana intelligent temperature control cable material is characterized in that it is by the cable core lead, contains nanometer conductive carbon black cable core protective layer, contains protective layer in the cable of conductive carbon black, and earth lead and cable external protection are formed.
2. intelligent temperature control cable material as claimed in claim 1 is characterized in that described cable core is zinc-plated copper conductor, and filament diameter 0.05～0.4mm adopts 5 to 40 Split Down, and the cable core diameter of composition is 1～2.5mm.
3. intelligent temperature control cable material as claimed in claim 1, it is characterized in that described cable core insulating barrier is a polytetrafluoroethylplastic plastic, and the acetylene conductive carbon black of interpolation 10-15 weight portion, senior solvent 20-25 part, described nanometer acetylene conductive carbon black particle diameter is 30～200nm, resistivity≤3.0, pH value 7～8, its surface conditioning agent are the 0.1%-3% butyl titanate of carbon black weight ratio.
4. intelligent temperature control cable material as claimed in claim 1; it is characterized in that protective layer is by the crosslinked polyethylene that contains nanometer conductive carbon black in the described cable; or with containing 100 kilograms of heat-resisting 80～90 ℃ of grade PVC CABLE MATERIALS of nanometer conductive carbon black; carbon black 25-40 kilogram; each 2-4 kilogram of fire retardant antimonous oxide and decabromodiphenyl oxide, antioxidant 618,0.5-1.5 kilogram; paraffin 3-4 kilogram, crosslink agent DCP 3-4 kilogram is formed.
5. intelligent temperature control cable material as claimed in claim 1 is characterized in that described earth connection is zinc-plated copper conductor, and diameter is 0.1～0.2mm.
6. intelligent temperature control cable material as claimed in claim 1 is characterized in that described external protection is the polyvinyl chloride cable material of 105 ℃ of levels of heatproof.
7. the preparation method of a nana intelligent temperature control cable material is characterized in that:
The preparation of first step cable core
Adopt zinc-plated copper conductor, single diameter is 0.05～0.4mm, carries out Split Down to 40 by stranding machine with 5 during use;
The cable core protective layer preparation of second step
The cable core protective layer is decentralized polyflon 100kg; acetylene conductive carbon black 10-15kg; senior solvent naphtha 20-25kg; earlier acetylene carbon black is handled with the butyl titanate of 0.1%-3%; mix with polytetrafluoroethylene again; fully mix with solvent naphtha then; be pressed into the bar of mesopore with mold cold; bar is sent in the pushing machine mould, and cable core is inserted in the plup inlet simultaneously, starts the pushing machine; cable core and polytetrafluoroethylene bar are moved together; with the thickness that pushing machine mouth mould control polytetrafluoroethylene coats,, send into sintering in 6 meters high sintering furnaces of vertical type while pushing from top to bottom.Low high on the sintering furnace temperature, high temperature section is 380～400 ℃, and sintering time is 6～8 minutes, and to contain the diameter of insulating barrier be 2～3.5mm to cable core behind the sintering;
The 3rd step contained the middle protective layer preparation method that nanometer is led carbon black
The nanometer conductive carbon black surface treatment
Get the 100kg carbon black and add the 0.1-3kg butyl titanate, with 2500～3000 rev/mins rotating speed mix 1-3 hour, dry then in homogenizer, to pulverize, screening is not reunited the even dispersion of carbon black;
Contain protective layer material preparation in the nanometer conductive carbon black
Granulation; Take by weighing HDPE 100kg, add surface treated carbon black 25-40kg fire retardant antimonous oxide and each 2-4kg of decabromodiphenyl oxide, antioxidant 618 0.5-1.5kg, paraffin 3-4kg and crosslink agent DCP 2-3kg stir in high speed spice machine, send extruding pelletization.Extruder charge door temperature is 150～160 ℃, and the stage casing is 170～175 ℃, and leading portion is 180～185 ℃, and 185～190 ℃ of head temperatures are extruded billot through head, with fervent technology pelletizing, go into water cooling after, send drying to remove surperficial moisture content;
Middle protective layer CABLE MATERIALS preparation
With the extruder of T type handpiece structure, the extruder extruded material is coated on the cable core by T type extrusion die;
Extruder charge door temperature is 150～160 ℃, and the stage casing temperature is 170～175 ℃, and leading portion is 180～185 ℃, 190～195 ℃ of head temperatures.Diameter after the coating is 4～6;
Crosslinking Treatment
With protective layer cable in the cooled coating, to send in the closed heat treatment drying tunnel, drying tunnel length is 40～50M, and temperature is 70～90 ℃, and steam pressure is 1.5-1.8Mpa, and directly heating promotes poly crosslinked;
The prescription 1 that contains the nanometer conductive carbon black crosslinked polyethylene, prescription 3, the preparation method of prescription 4 is identical with prescription 2;
The enforcement of the 4th step earth connection
Earth connection adopts zinc-plated copper conductor, and diameter is 0.1～0.2mm, and on the external diameter of protective layer, it is in the middle of middle protective layer and the outer jointing jacket in being wrapped in winding method,
The making of the 5th step external protection
Outer jointing jacket adopts the polyvinyl chloride cable material of heat-resisting 105 ℃ of levels, extrudes coating with the technology of producing cable, extruder charge door temperature is 150～160 ℃, the stage casing temperature is 170～175 ℃, and leading portion is 180～185 ℃, 190～195 ℃ of T type head temperatures;
Extrude and coat after the cooling spark test is wound into required nana intelligent temperature control cable material.
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| CNA2006100270951A CN101083854A (en) | 2006-05-30 | 2006-05-30 | Nana intelligent temperature control cable material and process for producing |
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| CNA2006100270951A CN101083854A (en) | 2006-05-30 | 2006-05-30 | Nana intelligent temperature control cable material and process for producing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101808432A (en) * | 2010-03-26 | 2010-08-18 | 吉林华阳电力装备制造有限公司 | Process for producing carbon heating element by soaking shrinking-drawing method |
| CN102766310A (en) * | 2012-08-16 | 2012-11-07 | 自贡众城特种塑胶有限公司 | Premix material for polytetrafluoroethylene black activated film and preparation method thereof |
| CN103965543A (en) * | 2014-05-21 | 2014-08-06 | 哈尔滨理工大学 | Crosslinkable polyethylene insulation material for high-voltage direct-current cable |
| CN105086071A (en) * | 2015-08-20 | 2015-11-25 | 晶锋集团股份有限公司 | Ultraviolet-resistant cable material for outdoor appliances and preparation method thereof |
| CN106519510A (en) * | 2016-11-24 | 2017-03-22 | 安徽意力电缆有限公司 | Formula of insulating and heat-conducting PVC (polyvinyl chloride) cable material |
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2006
- 2006-05-30 CN CNA2006100270951A patent/CN101083854A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101808432A (en) * | 2010-03-26 | 2010-08-18 | 吉林华阳电力装备制造有限公司 | Process for producing carbon heating element by soaking shrinking-drawing method |
| CN102766310A (en) * | 2012-08-16 | 2012-11-07 | 自贡众城特种塑胶有限公司 | Premix material for polytetrafluoroethylene black activated film and preparation method thereof |
| CN102766310B (en) * | 2012-08-16 | 2014-08-13 | 自贡众城特种塑胶有限公司 | Premix material for polytetrafluoroethylene black activated film and preparation method thereof |
| CN103965543A (en) * | 2014-05-21 | 2014-08-06 | 哈尔滨理工大学 | Crosslinkable polyethylene insulation material for high-voltage direct-current cable |
| CN105086071A (en) * | 2015-08-20 | 2015-11-25 | 晶锋集团股份有限公司 | Ultraviolet-resistant cable material for outdoor appliances and preparation method thereof |
| CN106519510A (en) * | 2016-11-24 | 2017-03-22 | 安徽意力电缆有限公司 | Formula of insulating and heat-conducting PVC (polyvinyl chloride) cable material |
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