CN103077775A - High current-carrying capacity low conduction temperature fire resistant cable for accident network analysis and preparation technology - Google Patents

High current-carrying capacity low conduction temperature fire resistant cable for accident network analysis and preparation technology Download PDF

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Publication number
CN103077775A
CN103077775A CN2013100327860A CN201310032786A CN103077775A CN 103077775 A CN103077775 A CN 103077775A CN 2013100327860 A CN2013100327860 A CN 2013100327860A CN 201310032786 A CN201310032786 A CN 201310032786A CN 103077775 A CN103077775 A CN 103077775A
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parts
carrying capacity
fire resistant
high current
cable
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CN2013100327860A
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CN103077775B (en
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王昆
张勇
张新
潘明星
陈宇坤
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Jiangsu Hengtong Power Cable Co Ltd
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Jiangsu Hengtong Power Cable Co Ltd
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Priority to CN201510615755.7A priority Critical patent/CN105336414A/en
Priority to CN201510351367.2A priority patent/CN105047285A/en
Priority to CN201310032786.0A priority patent/CN103077775B/en
Priority to CN201510615520.8A priority patent/CN105321603A/en
Priority to CN201510351368.7A priority patent/CN104966575A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/003—Power cables including electrical control or communication wires

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  • Organic Insulating Materials (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

The invention discloses a high current-carrying capacity low conduction temperature fire resistant cable for accident network analysis and a preparation technology. A ceramic composite belt is wrapped on the outer surface of a cable core; a high thermal resistance low smoke zero halogen polyolefin sheath layer is coated on the outer surface of the ceramic composite belt; and the high thermal resistance low smoke zero halogen polyolefin sheath layer comprises the following components in parts by weight: 80 to 100 parts of ethylvinylacetate, 5 to 20 parts of ethylene-propylene diene copolymer EPDM, 150 to 200 parts of aluminium hydroxide, 0.5 to 1.5 parts of stearic acid Hst, 1.5 to 2.0 parts of release agent, 2.0 to 3.0 parts of high abrasion carbon black, 1.0 to 2.0 parts of coupling agent, 3.0 to 4.0 parts of dicumyl peroxide, 2.5 to 3.5 parts of accelerating agent TA2C, 7 to 9 parts of dioctyl adipate, and 0.3 to 1.4 parts of auxiliary curing agent cyanuric acid triallyl ester. The cable can reduce the diameter of a copper conductor, and lock a great amount of heat produced by the copper conductor in the cable core, thereby ensuring that the surface temperature of the sheath layer is not over 70 DEG C.

Description

The accident net is analyzed with high current-carrying capacity low conduction temperature fire resistant electric power cable and preparation technology
Technical field
The present invention relates to high current-carrying capacity fire resistant electric power cable, also relate to the preparation technology of this high current-carrying capacity fire resistant electric power cable.
Background technology
In the ocean engineering field, the island engineering field, especially have the field, naval vessel of national defence purposes, all be furnished with the accident net electric energy transmitting of emergency start when having an accident, to ensure the electric power transfer of relevant device.At present, what such cable used all is fire-retardant class cables, that specification is approximately used is 3*70, ampacity is about 150A, and the jacket surface temperature does not allow to surpass 70 ℃, and (temperature requirement is very strict, because after emergency occurs, need to cable be hauled out reel with hand, and the insertion related system, temperature is too high, and hand is taken incessantly), external diameter is greatly about about 40.0mm;
Requirement in the industry annual meeting in this year, accident net cable need to change flame retardant type into fire safe type, and specification is used 3*25, and the same requirement of ampacity reaches 150A, and same requirement of jacket surface temperature is no more than 70 ℃, the maximum 30mm of external diameter.Have very large technological development difficulty after requiring like this, because (1) ampacity is constant, specification is by 70mm 2Be down to 25mm 2The time, conductor temp .-elevating can obviously strengthen, and when 50 ℃ of operating ambient temperatures, also can substantially exceed when reaching the temperature of jacket surface 70 ℃ (we do overtesting with common cable, and temperature is finally at 108 ℃); (2) the cable specification reduces at double, and the outside diameter of cable requires to reduce, and current-carrying capacity of cable and jacket surface are temperature-resistant, also require simultaneously cable to possess fire-resistant function, and this is very difficult concerning the realization of cable.
Summary of the invention
First purpose of the present invention provides a kind of accident net and analyzes with the low conduction of high current-carrying capacity temperature fire resistant electric power cable, when 50 ℃ of operating ambient temperatures, reduced the copper conductor diameter, realized most of heat that copper conductor produces is locked in the cable core, thereby guaranteed that the restrictive coating surface temperature is no more than 70 ℃.
Second purpose of the present invention provides the preparation technology of the low conduction of above-mentioned high current-carrying capacity temperature fire resistant electric power cable.
For achieving the above object, the technical solution used in the present invention is: a kind of accident net is analyzed with the low conduction of high current-carrying capacity temperature fire resistant electric power cable, the low conduction of described high current-carrying capacity temperature fire resistant electric power cable wrap is drawn together 3 copper conductors, this copper conductor outer surface is coated with refractory insulating layer, 3 stranded formation one cable cores of copper conductor, one ceramic composite band is wrapped in described cable core outer surface, one high thermal resistance low-smoke halogen-free polyolefin restrictive coating is coated on described ceramic composite band outer surface, and described high thermal resistance low-smoke halogen-free polyolefin restrictive coating is comprised of following parts by weight of component:
80 ~ 100 parts of ethylene vinyl acetate copolymer EVM 500HV,
(3722) 5 ~ 20 parts of ethylene-propylene diene copolymer EPDM,
150 ~ 200 parts in aluminium hydroxide,
0.5 ~ 1.5 part of stearic acid Hst,
1.5 ~ 2.0 parts of release agents,
2.0 ~ 3.0 parts of high wear-resistant carbon blacks (N330),
1.0 ~ 2.0 parts of coupling agents (KH-560),
3.0 ~ 4.0 parts of cumyl peroxides (DCP),
2.5 ~ 3.5 parts of promoter TA2C,
7 ~ 9 parts of dioctyl adipates (DOA),
0.3 ~ 1.4 part of auxiliary curing agent triallyl cyanurate.
Further improved technical scheme is as follows in the technique scheme:
1. in the such scheme, described high thermal resistance low-smoke halogen-free polyolefin restrictive coating is comprised of following parts by weight of component:
85 ~ 95 parts of ethylene vinyl acetate copolymer EVM 500HV,
(3722) 10 ~ 15 parts of ethylene-propylene diene copolymer EPDM,
160 ~ 190 parts in aluminium hydroxide,
0.8 ~ 1.2 part of stearic acid Hst,
1.6 ~ 1.8 parts of release agents,
2.2 ~ 2.8 parts of high wear-resistant carbon blacks (N330),
1.2 ~ 1.8 parts of coupling agents (KH-560),
3.2 ~ 3.8 parts of cumyl peroxides (DCP),
2.8 ~ 3.2 parts of promoter TA2C,
7.5 ~ 8.5 parts of dioctyl adipates (DOA),
0.5 ~ 1.2 part of auxiliary curing agent triallyl cyanurate.
2. in the such scheme, the sectional area of described copper conductor is 25mm 2
3. in the such scheme, be filled with some glass fibres (6) between described refractory insulating layer and the ceramic composite band.
The preparation technology of the low conduction of above-mentioned high current-carrying capacity temperature fire resistant electric power cable may further comprise the steps:
Step 1. with 80 ~ 100 parts of described ethylene vinyl acetate copolymer EVM 500HV, 5 ~ 20 parts of ethylene-propylene diene copolymer EPDM (3722) mixing 5min ~ 6min in 100 ℃ ~ 120 ℃ banburies, mixing even;
Step 2. in described banbury, add again 150 ~ 200 parts of described aluminium hydroxides, 0.5 ~ 1.5 part of stearic acid Hst, 1.5 ~ 2.0 parts of release agents, 2.0 ~ 3.0 parts of high wear-resistant carbon blacks (N330), 1.0 ~ 2.0 parts of coupling agents (KH-560), 2.5 ~ 3.5 parts of promoter TA2C, 7 ~ 9 parts of dioctyl adipates (DOA), mixing 3min ~ 5min;
Step 3. last 3.0 ~ 4.0 parts of described vulcanizing agent cumyl peroxides (DCP), 0.3 ~ 1.4 part of auxiliary curing agent triallyl cyanurate of adding in described banbury, then mixing 0.5min-1.5min discharges glue stuff compounding;
Step 4. with described glue stuff compounding thin-pass 1 ~ 2 time in mill, simultaneously, pendulum glue 2 ~ 3 times is then opened the bar slice at tri-roll press machine, and the rubber page or leaf of output behind the mistake talcum powder case, namely makes finished product through the chill roll cooling.
Because the utilization of technique scheme, the present invention compared with prior art has following advantages:
The low conduction of high current-carrying capacity of the present invention temperature fire resistant electric power cable, it introduces this cable with refractory thermal insulator as insulation and flame retardant coating, by the high thermal resistance low-smoke halogen-free polyolefin sheath material of thermal insulation layer in conjunction with certain content of the present invention and component, so that this cable specification number doubly reduces, ampacity is constant when still being decreased to 30mm and being diminished by 40mm for 150A, external diameter, under 50 ℃ of operating ambient temperatures, the jacket surface temperature is no more than 70 ℃, the properties of cable meets the requirement in the standard fully simultaneously, and makes cable possess simultaneously fire-retardant and fire resistance.
Description of drawings
Accompanying drawing 1 is analyzed with the low conduction of high current-carrying capacity temperature fire resistant electric power cable structure schematic diagram for accident net of the present invention.
In the above accompanying drawing: 1, copper conductor; 2, refractory insulating layer; 3, cable core; 4, ceramic composite band; 5, high thermal resistance low-smoke halogen-free polyolefin restrictive coating; 6, glass fibre.
Embodiment
Embodiment: a kind of accident net is analyzed with the low conduction of high current-carrying capacity temperature fire resistant electric power cable, the low conduction of described high current-carrying capacity temperature fire resistant electric power cable wrap is drawn together 3 copper conductors 1, this copper conductor 1 outer surface is coated with refractory insulating layer 2,3 copper conductor 1 stranded formation one cable cores 3, one ceramic composite band 4 is wrapped in described cable core 3 outer surfaces, one high thermal resistance low-smoke halogen-free polyolefin restrictive coating 5 is coated on described ceramic composite band 4 outer surfaces, described high thermal resistance low-smoke halogen-free polyolefin restrictive coating 5 is comprised of following parts by weight of component, and is as shown in table 1:
Table 1
Figure 67303DEST_PATH_IMAGE001
The sectional area of above-mentioned copper conductor is 25mm 2
Be filled with some glass fibres 6 between above-mentioned refractory insulating layer and the ceramic composite band.
The preparation technology of the low conduction of above-mentioned high current-carrying capacity temperature fire resistant electric power cable, the preparation technology of described high thermal resistance low-smoke halogen-free polyolefin restrictive coating may further comprise the steps:
Step 1. with 80 ~ 100 parts of described ethylene vinyl acetate copolymer EVM 500HV, 5 ~ 20 parts of ethylene-propylene diene copolymer EPDM (3722) mixing 5min ~ 6min in 100 ℃ ~ 120 ℃ banburies, mixing even;
Step 2. in described banbury, add again 150 ~ 200 parts of described aluminium hydroxides, 0.5 ~ 1.5 part of stearic acid Hst, 1.5 ~ 2.0 parts of release agents, 2.0 ~ 3.0 parts of high wear-resistant carbon blacks (N330), 1.0 ~ 2.0 parts of coupling agents (KH-560), 2.5 ~ 3.5 parts of promoter TA2C, 7 ~ 9 parts of dioctyl adipates (DOA), mixing 3min ~ 5min;
Step 3. last 3.0 ~ 4.0 parts of described vulcanizing agent cumyl peroxides (DCP), 0.3 ~ 1.4 part of auxiliary curing agent triallyl cyanurate of adding in described banbury, then mixing 0.5min ~ 1.5min discharges glue stuff compounding;
Step 4. with described glue stuff compounding thin-pass 1 ~ 2 time in mill, simultaneously, pendulum glue 2 ~ 3 times is then opened the bar slice at tri-roll press machine, and the rubber page or leaf of output behind the mistake talcum powder case, namely makes finished product through the chill roll cooling.
Because the utilization of technique scheme, the present invention has following advantages: this low-smoke halogen-free polyolefin possesses certain heat insulating function, and properties meets the design of expection simultaneously, specifically sees Table 2, and preparation technology is simple, and is workable.
The low conduction of table 2 high current-carrying capacity temperature fire resistant electric power cable performance index
Sequence number Performance project Unit Sheath
1 Mechanical performance before aging
1.1 Tensile strength is minimum N/ mm 2 10.0
1.2 Elongation at break is minimum % 180
2 The air-oven aged properties
2.1 The aging condition temperature ℃ 136±2
Time h 7×24
2.2 The tensile strength retention rate is minimum % 60
2.3 Reserved elongation at break is minimum % 60
3 The immersion oil test
3.1 The aging condition temperature ℃ 121±2
Time h 18
3.2 The tensile strength retention rate is minimum % 50
3.3 Reserved elongation at break is minimum % 50
4 Hot elongation test
4.1 The experimental condition temperature ℃ 200±3
The load time min 15
Mechanical stress N/cm 2 20
4.2 Percentage elongation is maximum under the load % 175
4.3 Permanent elongation is maximum under the load % 15
5 Tearing strength is minimum N/mm 6.13
7 The heat distortion test temperature ℃ 121±2
Time h 1
The thickness deformation rate is maximum 30
8 The acid gas content test is maximum % 2
9 Content of halogen is maximum % 0.2
10 The test of material poison exponent
Poison exponent is maximum 5
11 The test of material smoke index
Smoke index is maximum 25
12 Thermal resistivity K·m/W 5.8
The present invention is under 50 ℃ of operating ambient temperatures, and the jacket surface temperature is no more than 70 ℃, and the properties of cable meets the requirement in the standard fully simultaneously, and makes cable possess simultaneously fire-retardant and fire resistance.Concrete combination property contrast table sees Table 3:
The table 3 accident net analysis combination property contrast table of flexible electric power cable
Figure 984443DEST_PATH_IMAGE002
To sum up, accident net of the present invention is analyzed with the low conduction of high current-carrying capacity temperature fire resistant electric power cable, it introduces this cable with refractory thermal insulator as insulation and flame retardant coating, by the high thermal resistance low-smoke halogen-free polyolefin sheath material of thermal insulation layer in conjunction with certain content of the present invention and component, so that this cable specification number doubly reduces, ampacity is constant still to be 150A, when external diameter is decreased to 30mm and is diminished by 40mm, under 50 ℃ of operating ambient temperatures, the jacket surface temperature is no more than 70 ℃, the properties of cable meets the requirement in the standard fully simultaneously, and makes cable possess simultaneously fire-retardant and fire resistance.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.

Claims (5)

1. an accident net is analyzed with the low conduction of high current-carrying capacity temperature fire resistant electric power cable, it is characterized in that: the low conduction of described high current-carrying capacity temperature fire resistant electric power cable wrap is drawn together 3 copper conductors (1), this copper conductor (1) outer surface is coated with refractory insulating layer (2), stranded formation one cable cores of 3 copper conductors (1) (3), one ceramic composite band (4) is wrapped in described cable core (3) outer surface, one high thermal resistance low-smoke halogen-free polyolefin restrictive coating (5) is coated on described ceramic composite band (4) outer surface, and described high thermal resistance low-smoke halogen-free polyolefin restrictive coating (5) is comprised of following parts by weight of component:
80 ~ 100 parts of ethylene vinyl acetate copolymer EVM 500HV,
Ethylene-propylene diene copolymer EPDM(3722) 5 ~ 20 parts,
150 ~ 200 parts in aluminium hydroxide,
0.5 ~ 1.5 part of stearic acid Hst,
1.5 ~ 2.0 parts of release agents,
2.0 ~ 3.0 parts of high wear-resistant carbon blacks (N330),
1.0 ~ 2.0 parts of coupling agents (KH-560),
3.0 ~ 4.0 parts of cumyl peroxides (DCP),
2.5 ~ 3.5 parts of promoter TA2C,
7 ~ 9 parts of dioctyl adipates (DOA),
0.3 ~ 1.4 part of auxiliary curing agent triallyl cyanurate.
2. high current-carrying capacity according to claim 1 hangs down conduction temperature fire resistant electric power cable, and it is characterized in that: described high thermal resistance low-smoke halogen-free polyolefin restrictive coating (5) is comprised of following parts by weight of component:
85 ~ 95 parts of ethylene vinyl acetate copolymer EVM 500HV,
Ethylene-propylene diene copolymer EPDM(3722) 10 ~ 15 parts,
160 ~ 190 parts in aluminium hydroxide,
0.8 ~ 1.2 part of stearic acid Hst,
1.6 ~ 1.8 parts of release agents,
2.2 ~ 2.8 parts of high wear-resistant carbon blacks (N330),
1.2 ~ 1.8 parts of coupling agents (KH-560),
3.2 ~ 3.8 parts of cumyl peroxides (DCP),
2.8 ~ 3.2 parts of promoter TA2C,
7.5 ~ 8.5 parts of dioctyl adipates (DOA),
0.5 ~ 1.2 part of auxiliary curing agent triallyl cyanurate.
3. high current-carrying capacity according to claim 1 hangs down conduction temperature fire resistant electric power cable, and it is characterized in that: the sectional area of described copper conductor is 25mm 2
4. the low conduction of high current-carrying capacity according to claim 1 temperature fire resistant electric power cable is characterized in that: be filled with some glass fibres (6) between described refractory insulating layer and the ceramic composite band.
5. high current-carrying capacity hangs down the preparation technology of conducting temperature fire resistant electric power cable as claimed in claim 1, and it is characterized in that: the preparation technology of described high thermal resistance low-smoke halogen-free polyolefin restrictive coating may further comprise the steps:
Step 1. with 80 ~ 100 parts of described ethylene vinyl acetate copolymer EVM 500HV, 5 ~ 20 parts of ethylene-propylene diene copolymer EPDM(3722) mixing 5min ~ 6min in 100 ℃ ~ 120 ℃ banburies, mixing even;
Step 2. in described banbury, add again 150 ~ 200 parts of described aluminium hydroxides, 0.5 ~ 1.5 part of stearic acid Hst, 1.5 ~ 2.0 parts of release agents, 2.0 ~ 3.0 parts of high wear-resistant carbon blacks (N330), 1.0 ~ 2.0 parts of coupling agents (KH-560), 2.5 ~ 3.5 parts of promoter TA2C, 7 ~ 9 parts of dioctyl adipates (DOA), mixing 3min ~ 5min;
Step 3. last 3.0 ~ 4.0 parts of described vulcanizing agent cumyl peroxides (DCP), 0.3 ~ 1.4 part of auxiliary curing agent triallyl cyanurate of adding in described banbury, then mixing 0.5min ~ 1.5min discharges glue stuff compounding;
Step 4. with described glue stuff compounding thin-pass 1 ~ 2 time in mill, simultaneously, pendulum glue 2 ~ 3 times is then opened the bar slice at tri-roll press machine, and the rubber page or leaf of output behind the mistake talcum powder case, namely makes finished product through the chill roll cooling.
CN201310032786.0A 2013-01-29 2013-01-29 Accident network analysis high current-carrying capacity low transition temperature fire resistant electric power cable and preparation technology Active CN103077775B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201510615755.7A CN105336414A (en) 2013-01-29 2013-01-29 Flame-retardant fireproof power transmission cable with low conduction temperature
CN201510351367.2A CN105047285A (en) 2013-01-29 2013-01-29 Manufacturing process for fireproof power cable with low conductive temperature
CN201310032786.0A CN103077775B (en) 2013-01-29 2013-01-29 Accident network analysis high current-carrying capacity low transition temperature fire resistant electric power cable and preparation technology
CN201510615520.8A CN105321603A (en) 2013-01-29 2013-01-29 Manufacturing process for fire-resistant power transmission cable with high current-carrying capacity
CN201510351368.7A CN104966575A (en) 2013-01-29 2013-01-29 High-ampacity fire-resistance power cable

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CN201510351367.2A Division CN105047285A (en) 2013-01-29 2013-01-29 Manufacturing process for fireproof power cable with low conductive temperature
CN201510615755.7A Division CN105336414A (en) 2013-01-29 2013-01-29 Flame-retardant fireproof power transmission cable with low conduction temperature
CN201510615520.8A Division CN105321603A (en) 2013-01-29 2013-01-29 Manufacturing process for fire-resistant power transmission cable with high current-carrying capacity

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CN104371199A (en) * 2013-08-14 2015-02-25 特变电工股份有限公司 Low-smoke halogen-free coal mine electric cable material and preparation method thereof
CN104681191A (en) * 2013-11-29 2015-06-03 江苏亨通电力电缆有限公司 Rubber jacketed flexible cable with low smoke, no halogen, low toxicity and environment friendliness for coal mine
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