[go: up one dir, main page]

CN109000075A - A kind of antifreeze heating tape of uniform cloth heat of water supply line - Google Patents

A kind of antifreeze heating tape of uniform cloth heat of water supply line Download PDF

Info

Publication number
CN109000075A
CN109000075A CN201810908735.2A CN201810908735A CN109000075A CN 109000075 A CN109000075 A CN 109000075A CN 201810908735 A CN201810908735 A CN 201810908735A CN 109000075 A CN109000075 A CN 109000075A
Authority
CN
China
Prior art keywords
parts
water supply
supply line
uniform cloth
heating tape
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810908735.2A
Other languages
Chinese (zh)
Inventor
鲁旭波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUHU XUHUI ELECTRIC NEW MATERIAL CO Ltd
Original Assignee
WUHU XUHUI ELECTRIC NEW MATERIAL CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WUHU XUHUI ELECTRIC NEW MATERIAL CO Ltd filed Critical WUHU XUHUI ELECTRIC NEW MATERIAL CO Ltd
Priority to CN201810908735.2A priority Critical patent/CN109000075A/en
Publication of CN109000075A publication Critical patent/CN109000075A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L53/00Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30Heating of pipes or pipe systems
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02Organic and inorganic ingredients
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/04Carbon
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/28Nitrogen-containing compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/10Esters; Ether-esters
    • C08K5/11Esters; Ether-esters of acyclic polycarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2296Oxides; Hydroxides of metals of zinc
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/28Nitrogen-containing compounds
    • C08K2003/282Binary compounds of nitrogen with aluminium
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a kind of antifreeze heating tapes of the uniform cloth heat of water supply line, it including two copper core buses disposed in parallel, is distributed between two copper core buses and plays the PTC polymer heating material of heat effect, and the interior insulation sheath being wrapped in outside the PTC polymer heating material;The PTC polymer heating material prepares the component that raw material includes following mass fraction: 100 parts of high density polyethylene (HDPE), 10~23 parts of aluminium nitride, 3~5 parts of carbon black, 0.5~0.8 part of zinc oxide, 2.5~3.5 parts of silane coupling agent, 1.5~2.0 parts of 4,4'- thiobis (6- tertiary butyl metacresol), 0.3~0.5 part of tetrapentaerythritol rouge, 0.8~1.0 part of sebacic acid dibutyl ester.A kind of antifreeze heating tape of the uniform cloth heat of water supply line provided by the invention, has good thermal conductivity, in the longitudinal direction so as to reduce temperature difference in the longitudinal direction as much as possible.

Description

A kind of antifreeze heating tape of uniform cloth heat of water supply line
Technical field
The present invention relates to a kind of heating tape product technical field, the antifreeze heat tracing of especially a kind of uniform cloth heat of water supply line Band.
Background technique
The structure of self-limiting heating cable includes two conductive cores and is distributed between two conductive cores and plays heat effect PTC high molecular material;When the power is turned on, with the fever of PTC high molecular material, internal PTC high molecular material expanded by heating So that resistance is become larger, to reduce heating power, heating power and the resistance of PTC high molecular material is made to reach an equilibrium valve, from And realize the self limiting temperature function of heating tape.
For the self-limiting heating cable of different application, there is different performance requirements, wherein for water supply line into The heating tape of the antifreeze heat tracing of row, the requirement for heat tracing temperature is not high, as long as the highest of heat tracing belt surface maintains temperature that can reach To 50 DEG C or more, the function of preventing water supply line from freezing can be realized;Flame retardant property requirement further for heating tape is not also high, Even if heating tape is ignited in accident or since failure leads to that spontaneous combustion occurs, will not generally damage to water supply line, i.e., Just damaging to water supply line leads to pipe burst, and the water in water supply line can also rapidly stamp out the flames;But due to The length of water supply line is longer, and mostly buried in underground, therefore it is required that heating tape needs to have biggish length, and heating tape Length is too long, is influenced by PTC polymer heating material overall resistance, then the temperature of position there is larger difference, The position heat tracing temperature resulted in has reached the upper limit, and some position heat tracing temperature are also not enough to play antifreezing effect.Base In above-mentioned characteristic, it is necessary to develop a kind of antifreeze heating tape of uniform cloth heat of water supply line.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of antifreeze heating tape of water supply line uniform cloth heat, There is good thermal conductivity, so as to reduce temperature difference in the longitudinal direction as much as possible on length direction.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of antifreeze heating tape of the uniform cloth heat of water supply line, including two copper core buses disposed in parallel, be distributed in described in two The PTC polymer heating material of heat effect is played between copper core bus, and is wrapped in outside the PTC polymer heating material Interior insulation sheath;The PTC polymer heating material prepares the component that raw material includes following mass fraction:
100 parts of high density polyethylene (HDPE),
10~23 parts of aluminium nitride,
3~5 parts of carbon black,
0.5~0.8 part of zinc oxide,
2.5~3.5 parts of silane coupling agent,
1.5~2.0 parts of 4,4'- thiobis (6- tertiary butyl metacresol),
0.3~0.5 part of tetrapentaerythritol rouge,
0.8~1.0 part of sebacic acid dibutyl ester.
As above-mentioned technical proposal further preferred, two copper core buses are that tin plating copper stranded conductor or nickel-clad copper twist Line, the interior insulation sheath are made of ethylene-vinyl acetate copolymer material.
It is as above-mentioned technical proposal further preferred, it further include the cable shield being wrapped in outside the interior insulation sheath Layer, the cable shield are that semi-conductive tape is wrapped, semiconductive material extrudes and one of metallic fiber mixed weaving or a variety of It is compound.
It is as above-mentioned technical proposal further preferred, it further include the external insulation shield being wrapped in outside the cable shield Set, the outer insulation jacket are made of EP rubbers material.
Compared with prior art, the beneficial effects of the present invention are:
A kind of antifreeze heating tape of the uniform cloth heat of water supply line provided by the present invention, the PTC polymer heating material of selection have Good thermal conductivity, thermal conductivity in the longitudinal direction is 35~78 W/mK, so as to reduce as much as possible in length side Upward temperature difference;It is 48~63 DEG C that heat tracing belt surface highest, which maintains temperature,.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is a kind of structural schematic diagram of the antifreeze heating tape of the uniform cloth heat of water supply line of the present invention.
Specific embodiment
Specific embodiment 1
Referring to Fig.1, Fig. 1 is a kind of antifreeze heating tape of the uniform cloth heat of water supply line provided in this embodiment, including two set in parallel The copper core bus 1 set is distributed in the PTC polymer heating material 2 that heat effect is played between two copper core buses 1, and The interior insulation sheath 3 being wrapped in outside the PTC polymer heating material 2;Two copper core buses 1 be tin plating copper stranded conductor or Nickel plating copper stranded conductor, the interior insulation sheath 3 are made of ethylene-vinyl acetate copolymer material.
It further include the cable shield 4 being wrapped in outside the interior insulation sheath 3, the cable shield 4 is semi-conductive tape Wrapped, semiconductive material extrudes and one of metallic fiber mixed weaving or a variety of compound.It further include being wrapped in the cable screens The outer insulation jacket 5 outside layer 4 is covered, the outer insulation jacket 5 is made of EP rubbers material.
The PTC polymer heating material 2 prepares the component that raw material includes following mass fraction:
100 parts of high density polyethylene (HDPE), 23 parts of aluminium nitride, 3 parts of carbon black, 0.6 part of zinc oxide, 3.5 parts of silane coupling agent, 4,4'- sulphur 1.5 parts, 0.4 part of tetrapentaerythritol rouge, 0.8 part of sebacic acid dibutyl ester of Dai Shuan (6- tertiary butyl metacresol).
The partial size of carbon black is less than or equal to 200 nanometers, and the partial size of zinc oxide is less than or equal to 100 nanometers, and the partial size of aluminium nitride is small In equal to 1.0 microns.
The preparation method of the PTC polymer heating material 2 the following steps are included:
Step 1: being put into mixing equipment after high density polyethylene (HDPE) master batch, aluminium nitride, carbon black and zinc oxide are mixed, with 130 ~150 DEG C of temperature mixing 20~30 minutes, makes that high density polyethylene (HDPE) melts completely and each component is sufficiently mixed.
Step 2: silane coupling agent is put into mixing equipment, with temperature mixing 30~50 minutes of 110~120 DEG C, Keep silane coupling agent evenly dispersed and abundant reaction.
Step 3: 4,4'- thiobis (6- tertiary butyl metacresol), tetrapentaerythritol rouge and sebacic acid dibutyl ester are mixed equal It is put into after even in mixing equipment, with temperature mixing 10~20 minutes of 120~130 DEG C, component is made to be uniformly dispersed.
Step 4: the product of step 3 is put into twin-screw melting extrusion equipment, PTC polymer heating material is squeezed out It is wrapped in outside two copper core buses disposed in parallel.
Step 5: the PTC polymer heating material squeezed out is cooled in 25 DEG C~28 DEG C of air lower than softening temperature Afterwards, be placed in 80 DEG C~85 DEG C of sink and cooled down and kept the temperature 1~3 minute, be then fed into 65 DEG C~70 DEG C of sink into Row is cooling simultaneously to keep the temperature 1~3 minute, is re-fed into and 1~3 minute is cooled down and kept the temperature in 45 DEG C~50 DEG C of sink, finally as It is cooled to room temperature in air.
The heating conduction of the PTC polymer heating material 2 provided in this embodiment are as follows: thermal conductivity in the longitudinal direction For 78 W/mK.
The waterproof test performance of the antifreeze heating tape of the uniform cloth heat of a kind of water supply line provided in this embodiment: according to GB/ T19835-2005 " self-limiting heating cable " national standard is tested, heating tape soak 48 h after bear 3.5 KV/1 min without Breakdown.
The heating temperature of the antifreeze heating tape of the uniform cloth heat of a kind of water supply line provided in this embodiment: according to GB/T19835- 2005 " self-limiting heating cable " national standards are tested, and it is 55 DEG C that heat tracing belt surface highest, which maintains temperature,.
Specific embodiment 2
A kind of antifreeze heating tape of the uniform cloth heat of water supply line provided in this embodiment, structure and the PTC macromolecule heating material The preparation method of material 2 is identical as specific embodiment 1, the difference is that:
The PTC polymer heating material 2 prepares the component that raw material includes following mass fraction:
100 parts of high density polyethylene (HDPE), 10 parts of aluminium nitride, 5 parts of carbon black, 0.8 part of zinc oxide .5 parts of silane coupling agent, 4,4'- is thio 1.6 parts, 0.3 part of tetrapentaerythritol rouge, 0.9 part of sebacic acid dibutyl ester of bis- (6- tertiary butyl metacresols).
The heating conduction of the PTC polymer heating material 2 provided in this embodiment are as follows: thermal conductivity in the longitudinal direction For 35 W/mK.
The waterproof test performance of the antifreeze heating tape of the uniform cloth heat of a kind of water supply line provided in this embodiment: according to GB/ T19835-2005 " self-limiting heating cable " national standard is tested, heating tape soak 48 h after bear 3.5 KV/1 min without Breakdown.
The heating temperature of the antifreeze heating tape of the uniform cloth heat of a kind of water supply line provided in this embodiment: according to GB/T19835- 2005 " self-limiting heating cable " national standards are tested, and it is 63 DEG C that heat tracing belt surface highest, which maintains temperature,.
Specific embodiment 3
A kind of antifreeze heating tape of the uniform cloth heat of water supply line provided in this embodiment, structure and the PTC macromolecule heating material The preparation method of material 2 is identical as specific embodiment 1, the difference is that:
The PTC polymer heating material 2 prepares the component that raw material includes following mass fraction:
100 parts of high density polyethylene (HDPE), 20 parts of aluminium nitride, 4 parts of carbon black, 0.5 part of zinc oxide, 3.0 parts of silane coupling agent, 4,4'- sulphur 2.0 parts, 0.5 part of tetrapentaerythritol rouge, 1.0 parts of sebacic acid dibutyl ester of Dai Shuan (6- tertiary butyl metacresol).
The heating conduction of the PTC polymer heating material 2 provided in this embodiment are as follows: thermal conductivity in the longitudinal direction For 63 W/mK.
The waterproof test performance of the antifreeze heating tape of the uniform cloth heat of a kind of water supply line provided in this embodiment: according to GB/ T19835-2005 " self-limiting heating cable " national standard is tested, heating tape soak 48 h after bear 3.5 KV/1 min without Breakdown.
The heating temperature of the antifreeze heating tape of the uniform cloth heat of a kind of water supply line provided in this embodiment: according to GB/T19835- 2005 " self-limiting heating cable " national standards are tested, and it is 48 DEG C that heat tracing belt surface highest, which maintains temperature,.
Better embodiment of the invention is illustrated above, certainly, the present invention can also using with it is above-mentioned The different form of embodiment, those skilled in the art are made equivalent on the premise of without prejudice to spirit of the invention Transformation or corresponding change, all should belong in protection scope of the present invention.

Claims (5)

1. a kind of antifreeze heating tape of the uniform cloth heat of water supply line, including two copper core buses (1) disposed in parallel, it is distributed in two The PTC polymer heating material (2) of heat effect is played between the copper core bus (1), and is wrapped in the PTC macromolecule hair The interior insulation sheath (3) of hot material (2) outside;It is characterized in that, the raw material for preparing of the PTC polymer heating material (2) includes The component of following mass fraction:
100 parts of high density polyethylene (HDPE),
10~23 parts of aluminium nitride,
3~5 parts of carbon black,
0.5~0.8 part of zinc oxide,
2.5~3.5 parts of silane coupling agent,
1.5~2.0 parts of 4,4'- thiobis (6- tertiary butyl metacresol),
0.3~0.5 part of tetrapentaerythritol rouge,
0.8~1.0 part of sebacic acid dibutyl ester.
2. a kind of antifreeze heating tape of the uniform cloth heat of water supply line according to claim 1, which is characterized in that the PTC high Molecule heating material (2) prepares the component that raw material includes following mass fraction:
100 parts of high density polyethylene (HDPE),
23 parts of aluminium nitride, 3 parts of carbon black,
0.6 part of zinc oxide,
3.5 parts of silane coupling agent,
1.5 parts of 4,4'- thiobis (6- tertiary butyl metacresol),
0.4 part of tetrapentaerythritol rouge,
0.8 part of sebacic acid dibutyl ester.
3. a kind of antifreeze heating tape of the uniform cloth heat of water supply line according to claim 1, it is characterised in that: two copper Core bus (1) is tin plating copper stranded conductor or nickel plating copper stranded conductor, and the interior insulation sheath (3) is ethylene-vinyl acetate copolymer material Material is made.
4. a kind of antifreeze heating tape of the uniform cloth heat of water supply line according to claim 1, it is characterised in that: further include package In the cable shield (4) of the interior insulation sheath (3) outside, the cable shield (4) wrapped, semiconductive material for semi-conductive tape It extrudes and one of metallic fiber mixed weaving or a variety of compound.
5. a kind of antifreeze heating tape of the uniform cloth heat of water supply line according to claim 4, it is characterised in that: further include package In the outer insulation jacket (5) of the cable shield (4) outside, the outer insulation jacket (5) is made of EP rubbers material.
CN201810908735.2A 2018-08-10 2018-08-10 A kind of antifreeze heating tape of uniform cloth heat of water supply line Withdrawn CN109000075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810908735.2A CN109000075A (en) 2018-08-10 2018-08-10 A kind of antifreeze heating tape of uniform cloth heat of water supply line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810908735.2A CN109000075A (en) 2018-08-10 2018-08-10 A kind of antifreeze heating tape of uniform cloth heat of water supply line

Publications (1)

Publication Number Publication Date
CN109000075A true CN109000075A (en) 2018-12-14

Family

ID=64595231

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810908735.2A Withdrawn CN109000075A (en) 2018-08-10 2018-08-10 A kind of antifreeze heating tape of uniform cloth heat of water supply line

Country Status (1)

Country Link
CN (1) CN109000075A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025055053A1 (en) * 2023-09-12 2025-03-20 安邦电气股份有限公司 Ptc heat trace cable and preparation method therefor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444708A (en) * 1979-05-10 1984-04-24 Sunbeam Corporation Flexible production of heating elements
CN101178959A (en) * 2006-11-09 2008-05-14 聚鼎科技股份有限公司 High voltage resistant overcurrent protection element
CN103304872A (en) * 2013-05-24 2013-09-18 安邦电气集团有限公司 High-density polyvinyl PTC high molecular exothermic material and preparation method thereof
CN103772782A (en) * 2013-12-03 2014-05-07 上海神沃电子有限公司 Self-limited flexible PTC (positive temperature coefficient) exothermic material and PTC core material prepared from same and preparation method of PTC core material
CN106332333A (en) * 2016-09-08 2017-01-11 芜湖市旭辉电工新材料有限责任公司 Anti-freezing self-regulating electric tracing band for water supply pipeline

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444708A (en) * 1979-05-10 1984-04-24 Sunbeam Corporation Flexible production of heating elements
CN101178959A (en) * 2006-11-09 2008-05-14 聚鼎科技股份有限公司 High voltage resistant overcurrent protection element
CN103304872A (en) * 2013-05-24 2013-09-18 安邦电气集团有限公司 High-density polyvinyl PTC high molecular exothermic material and preparation method thereof
CN103772782A (en) * 2013-12-03 2014-05-07 上海神沃电子有限公司 Self-limited flexible PTC (positive temperature coefficient) exothermic material and PTC core material prepared from same and preparation method of PTC core material
CN106332333A (en) * 2016-09-08 2017-01-11 芜湖市旭辉电工新材料有限责任公司 Anti-freezing self-regulating electric tracing band for water supply pipeline

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025055053A1 (en) * 2023-09-12 2025-03-20 安邦电气股份有限公司 Ptc heat trace cable and preparation method therefor

Similar Documents

Publication Publication Date Title
CN105968698B (en) A kind of cable and its production technology
CN105957631B (en) A kind of flexible cable and preparation method thereof
CN107785101B (en) Alumina mineral isolation type fireproof cable and preparation method thereof
CN112053808A (en) Manufacturing process of ultraviolet crosslinked cable
CN106935324A (en) A kind of nanometer high temperature fire protection flame retarding cable and preparation method thereof
CN202758656U (en) Ceramic silicon rubber insulation medium-voltage fire-resistant cable with rated voltage of 6kV-35kV
CN109000075A (en) A kind of antifreeze heating tape of uniform cloth heat of water supply line
CN106455167B (en) A kind of low-temperature flame retardant geothermal heating self-limiting heating cable
JP2004018652A (en) Semi-conductive watertight composition
CN115746445A (en) Halogen-free low-smoke flame-retardant polyolefin sheath material and preparation method thereof
CN111269487A (en) Communication cable
CN106332336A (en) PTC material self-temperature limiting electric heat tracing band processing technology
CN103468000B (en) High ampacity low surface temperature rise cable insulation rubber for ships and its manufacturing method
CN113365377A (en) Explosion-proof self-temperature-control heating belt and preparation method thereof
CN101335103A (en) Electric cable with silicon rubber sheath and manufacturing method
CN106332333A (en) Anti-freezing self-regulating electric tracing band for water supply pipeline
CN208093772U (en) A waterproof cable fusion joint
CN109096584A (en) A kind of PTC polymer heating material of uniform cloth heat
CN105139949A (en) Fire-proof and water-proof and temperature sensing cable and manufacturing method thereof
JP3699514B2 (en) Cross-linked polyethylene insulated power cable and method for producing the same
CN113450955B (en) Low-voltage power cable with conventional service life of 60 years
CN201845603U (en) Yellow-green grounding flexible cable for communication power supply
CN111681811A (en) Flexible fireproof cable and preparation method of heat insulation layer thereof
CN110570983A (en) high-temperature-resistant aerial insulated cable and preparation method thereof
CN113363002A (en) Female cable with anti-drop fireproof layer structure and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20181214

WW01 Invention patent application withdrawn after publication