CN108922685A - A kind of flame retardant type power cable - Google Patents
A kind of flame retardant type power cable Download PDFInfo
- Publication number
- CN108922685A CN108922685A CN201810788811.0A CN201810788811A CN108922685A CN 108922685 A CN108922685 A CN 108922685A CN 201810788811 A CN201810788811 A CN 201810788811A CN 108922685 A CN108922685 A CN 108922685A
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- Prior art keywords
- flame retardant
- parts
- flame
- power cable
- layer
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- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
-
- 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
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a kind of flame retardant type power cable, including inner core and housing, the inner core includes the insulating layer on the outside of conductor and conductor, and the housing is followed successively by shielded layer, steel-tape armouring layer, polyethylene layer and flame-retarded resin type crust from inside to outside.Fire proofing is filled in cavity between the insulating layer and shielded layer.The present invention has good flame retardant effect, internal to have flame resistant filler material, and surface is even more to have flame-retarded resin type crust, flame retardant effect highly significant.
Description
Technical field
The present invention relates to a kind of flame retardant type power cables, belong to field of cable technology.
Background technique
Voltage rating 6-35KV medium-pressure power cable use occasion is more and more, and use scope is more and more wider, midium voltage cable
Type be also continuously increased therewith.With the quickening of economic construction of China, skyscraper, subway, tunnel, power plant and nuclear power station
More stringent requirements are proposed to safety of the power cable under Fire Conditions for the intermediate distribution system of equal important places.Using resistance to
It is imperative that fiery flame retardant cable is powered, and the power cable of fire resistant flame retardant not only wants fire-retardant resistance under flame or hot conditions
Fire, and to have higher thermal insulation not damage cable built-in electrical insulation under the conditions of guaranteeing external high temperature, it can ensure pre-
It fixes time interior power supply line's normal power supply, and toxic and harmful gas will not be generated because of burning.Fireproofing of cable flame-retarded technology
It has attracted more and more attention from people.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of flame retardant type power cable, there is resistance well
Fuel efficiency fruit.
To achieve the goals above, the technical solution adopted by the present invention is that：A kind of flame retardant type power cable, including inner core and
Housing, the inner core include the insulating layer on the outside of conductor and conductor, and the housing is followed successively by shielded layer, steel band from inside to outside
Armor, polyethylene layer and flame-retarded resin type crust.
Fire proofing is filled in cavity between the insulating layer and shielded layer.
The outside diameter of cable is 10-100mm.
The conductor is copper conductor.
The fire proofing is glass fibre.
The shielded layer is braiding copper mesh.
The present invention has good flame retardant effect, internal to have flame resistant filler material, and surface is even more to have flame-retarded resin
Type crust, flame retardant effect highly significant.
Detailed description of the invention
Fig. 1 is a kind of flame retardant type power cable provided in an embodiment of the present invention；
In figure, 1, conductor, 2, insulating layer, 3, fire proofing, 4, shielded layer, 5, steel-tape armouring layer, 6, insulating protective layer 7, fire-retardant
Resin type crust.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, be a kind of flame retardant type power cable provided in an embodiment of the present invention, including inner core and housing, it is described
Inner core include insulating layer 2 on the outside of conductor 1 and conductor, the housing be followed successively by from inside to outside shielded layer 4, steel-tape armouring
Layer 5, polyethylene layer 6 and flame-retarded resin type crust 7.
Fire proofing 3 is filled in cavity between the insulating layer and shielded layer.
The outside diameter of cable is 10-100mm.
The conductor is copper conductor.
The fire proofing is glass fibre.
The shielded layer is braiding copper mesh.
The present invention has good flame retardant effect, internal to have flame resistant filler material, and surface is even more to have flame-retarded resin
Type crust, flame retardant effect highly significant.Flame-retarded resin type crust uses the preferable phenolic resin of high temperature resistance, even if in high temperature
Under be also able to maintain the globality and stability of its structure.Trioctyl trimellitate (TOTM) and gas-phase silica not only increase fire-retardant work
With, and making cable heat-resisting, anti-bending strength is preferable.The addition of compound stabilizer is so that the stability of protective layer further adds
By force, anti-decomposition oxidation.Containing a large amount of incombustible short chain alkali calcium phosphate powder of inorganic matter etc., it can be equal in high-temperature-resistant layer raw material
It is even to be scattered in rubber, when meeting flame combustion, hardened hard shell is formed, completely cuts off extraneous oxygen, flame propagation is prevented, so that line
Core effectively runs a period of time and the high fire-retardance filler material stability is good, has good compatibility with other materials in cable.On
Stating protective layer made of material, not only material structure is stablized, not oxidizable and wear-resisting, long service life, and fireproof flame-retardant effect
Further it is reinforced.
Embodiment 1
Flame-retarded resin type crust, preparation method include the following steps：
2.4 parts of ethyl alcohol are added into 0.8 part of allyl sulfide for step 1, and 2 parts of anti-aging agent CPPD are added after mixing, continue
It is uniformly mixed and is sent into processor for ultrasonic wave, 30KHz is ultrasonically treated 20min discharging, obtains mixture A；
Step 2 weighs 2 parts of epoxidized soybean oils and 1 part of titanium dioxide, after being uniformly mixed, obtains mixture B；
Step 3 weighs 100 parts of phenolic resin, 20 parts short chain alkali calcium phosphate powder, 15 parts of trioctyl trimellitate (TOTM)s, 12 parts of clouds
Female powder and 0.1 part of polyethylene wax are put into high-speed mixer, mixed at high speed 8min, obtain mixture C；
Step 4 claims 3 parts of gas-phase silicas, 4 parts of calcium zinc stabilizers, 1 part of calcium stearate and 5 parts of antimony oxides, is added after merging
Into mixture C, continues to be stirred 5min, obtain mixture D;
Step 5 sequentially adds mixture A and mixture B into mixture D, continues to be stirred 15min, then be discharged to
Carried out in cooling mixing machine it is cold stir lOmin after, discharging, obtain mixture E;
Mixture E temperature is down to 50 DEG C by step 6, and extrusion molding is drying to obtain flame retardant cable skin.
The preparation method of the short chain alkali calcium phosphate powder is：
Step 1, the calcium nitrate Ca (NO for weighing 6 parts3)·4H2O is dissolved in 25 parts of deionized waters, weighs 1.5 parts of biphosphate
Ammonium NH4H2PO4It is dissolved in 25 parts of deionized waters, wherein the molar ratio of Ca/P is 5:3；
Above two solution is mixed and stirred for uniformly by step 2, pH=10 of mixed solution is adjusted with 25% ammonium hydroxide, at 40 DEG C
1h is reacted in water-bath；
Above-mentioned solution is transferred in reaction kettle by step 3, end of reaction, in 180 DEG C of reaction 16h, is cooled to room after reaction
Temperature opens kettle, and solution is centrifuged, and is washed with deionized 3 times, centrifugal rotational speed 6000r/min, time 8min；
Step 4, centrifugation finish, and for 24 hours, products therefrom is alkali calcium phosphate for drying in 70 DEG C of baking ovens.
Step 5 presses 3g gamma-aminopropyl-triethoxy-silane and 4g γ-glycidyl ether oxygen propyl trimethoxy silicane
3：In 4 ratio investment 25ml methanol solution, it is stirred 2h at 60 DEG C, obtains compounding silane-modified liquid；
Step 6 above-mentioned alkali calcium phosphate is added in the silane-modified liquid of gained compounding, is stirred at room temperature for 24 hours, through filtering, first
Pure and mild deionized water is washed 3 times, is dried in vacuo for 24 hours at 50 DEG C, is ground up, sieved and short chain alkali calcium phosphate powder is made.
Embodiment 2
Step 3 weighs 100 parts of phenolic resin, 16 parts short chain alkali calcium phosphate powder, 15 parts of trioctyl trimellitate (TOTM)s, 12 parts of clouds
Female powder and 0.1 part of polyethylene wax are put into high-speed mixer, mixed at high speed 8min, obtain mixture C；Remaining preparation and reality
It is identical to apply example 1.
Embodiment 3
Step 3 weighs 100 parts of phenolic resin, 14 parts short chain alkali calcium phosphate powder, 15 parts of trioctyl trimellitate (TOTM)s, 12 parts of clouds
Female powder and 0.1 part of polyethylene wax are put into high-speed mixer, mixed at high speed 8min, obtain mixture C；Remaining preparation and reality
It is identical to apply example 1.
Embodiment 4
Step 3 weighs 100 parts of phenolic resin, 10 parts short chain alkali calcium phosphate powder, 15 parts of trioctyl trimellitate (TOTM)s, 12 parts of clouds
Female powder and 0.1 part of polyethylene wax are put into high-speed mixer, mixed at high speed 8min, obtain mixture C；Remaining preparation and reality
It is identical to apply example 1.
Embodiment 5
Step 3 weighs 100 parts of phenolic resin, 6 parts short chain alkali calcium phosphate powder, 15 parts of trioctyl trimellitate (TOTM)s, 12 parts of micas
Powder and 0.1 part of polyethylene wax are put into high-speed mixer, mixed at high speed 8min, obtain mixture C；Remaining preparation and implementation
Example 1 is identical.
Embodiment 6
Step 3 weighs 100 parts of phenolic resin, 2 parts short chain alkali calcium phosphate powder, 15 parts of trioctyl trimellitate (TOTM)s, 12 parts of micas
Powder and 0.1 part of polyethylene wax are put into high-speed mixer, mixed at high speed 8min, obtain mixture C；Remaining preparation and implementation
Example 1 is identical.
Embodiment 7
Step 3 weighs 100 parts of phenolic resin, 24 parts short chain alkali calcium phosphate powder, 15 parts of trioctyl trimellitate (TOTM)s, 12 parts of clouds
Female powder and 0.1 part of polyethylene wax are put into high-speed mixer, mixed at high speed 8min, obtain mixture C；Remaining preparation and reality
It is identical to apply example 1.
Embodiment 8
Step 3 weighs 100 parts of phenolic resin, 28 parts short chain alkali calcium phosphate powder, 15 parts of trioctyl trimellitate (TOTM)s, 12 parts of clouds
Female powder and 0.1 part of polyethylene wax are put into high-speed mixer, mixed at high speed 8min, obtain mixture C；Remaining preparation and reality
It is identical to apply example 1.
Embodiment 9
Step 3 weighs 100 parts of phenolic resin, 32 parts short chain alkali calcium phosphate powder, 15 parts of trioctyl trimellitate (TOTM)s, 12 parts of clouds
Female powder and 0.1 part of polyethylene wax are put into high-speed mixer, mixed at high speed 8min, obtain mixture C；Remaining preparation and reality
It is identical to apply example 1.
Embodiment 10
Step 3 weighs 100 parts of phenolic resin, 36 parts short chain alkali calcium phosphate powder, 15 parts of trioctyl trimellitate (TOTM)s, 12 parts of clouds
Female powder and 0.1 part of polyethylene wax are put into high-speed mixer, mixed at high speed 8min, obtain mixture C；Remaining preparation and reality
It is identical to apply example 1.
Reference examples 1
It is with 1 difference of embodiment：In the step 3 of cable sheath preparation, short chain alkali calcium phosphate powder is not added, remaining
Step is identical with embodiment 1.
Reference examples 2
It is with 1 difference of embodiment：In the step 3 of cable sheath preparation, replace short chain alkali using the calcium carbonate powder of equivalent
Formula calcium phosphate powder, remaining step are identical with embodiment 1.
Reference examples 3
It is with 1 difference of embodiment：In the step 4 of cable sheath preparation, calcium zinc stabilizer is not added, remaining step and reality
It is identical to apply example 1.
Reference examples 4
It is with 1 difference of embodiment：In the step 4 of cable sheath preparation, replace antimony oxide dosage not with silica
Become, remaining step is identical with embodiment 1.
Reference examples 5
It is with 1 difference of embodiment：In the step 1 of short chain alkali calcium phosphate powder preparation, Ca (NO3)·4H2O and
NH4H2PO4Mass ratio is 1:1, remaining step is identical with embodiment 1.
Reference examples 6
It is with 1 difference of embodiment：In the step 1 of short chain alkali calcium phosphate powder preparation, Ca (NO3)·4H2O and
NH4H2PO4Mass ratio is 1:4, remaining step is identical with embodiment 1.
Reference examples 7
It is with 1 difference of embodiment：In the step 2 of short chain alkali calcium phosphate powder preparation, PH=7 of mixed liquor are adjusted, remaining
Step is identical with embodiment 1.
Reference examples 8
It is with 1 difference of embodiment：In the step 2 of short chain alkali calcium phosphate powder preparation, PH=4 of mixed liquor are adjusted, remaining
Step is identical with embodiment 1.
Reference examples 9
It is with 1 difference of embodiment：In the step 5 of short chain alkali calcium phosphate powder preparation, equivalent one pack system γ-ammonia third is used
Ethyl triethoxy silicane alkane, remaining step are identical with embodiment 1.
Reference examples 10
It is with 1 difference of embodiment：In the step 5 of short chain alkali calcium phosphate powder preparation, equivalent one-component γ-shrink is used
Glycerol ether oxygen propyl trimethoxy silicane, remaining step are identical with embodiment 1.
It chooses the cable sheath being prepared and carries out performance detection respectively, fired using GB/T 10707-2008 standard test material
Burn performance, JF-3 type oxygen index measurer.Oxygen index (OI)<22% belongs to combustible material, and oxygen index (OI) belongs to flammable between 22%---27%
Material, oxygen index (OI)>27% belongs to nonflammable material.
As a result as follows：
The experimental results showed that the present invention, which provides flame-retarded resin type crust, has excellent fireproof flame-retardant effect, material is in fc-specific test FC
Under the conditions of, limit oxygen index is higher, it is better to illustrate flame retardant effect, conversely, effect is poorer；With embodiment 1 the difference lies in that implementing
Example 2 arrives embodiment 10, changes the proportion of primary raw material composition in cable sheath material respectively, and material has certain anti-flammability
Can, but to be nothing like embodiment 1 high for limit oxygen index.It can be seen that being in phenolic resin, short chain alkali calcium phosphate powder quality proportion
5：1, when other ingredient dosages are fixed, flame retardant effect reaches 41.4% well with unexpected；Reference examples 1 to reference examples 2 no longer
Short chain alkali calcium phosphate powder is simultaneously replaced with calcium carbonate, and limit oxygen index is not obviously high, illustrate filler component to cable sheath
Flame retardant property has an important influence on；Reference examples 3 to reference examples 4, which do not add, is no longer added calcium zinc stabilizer and antimony oxide,
Effect is still bad, illustrates that the doping of two kinds of components is also important；Reference examples 5 change Ca (NO to reference examples 63)·4H2O and
NH4H2PO4Mass ratio, effect is also bad, illustrates Ca (NO3)·4H2O and NH4H2PO4Quality has very big than the flame retarding construction of filler
It influences；Reference examples 7 and example 8 reduce mixed liquor PH, and flame retardant effect is obviously deteriorated, and illustrate that fire-retardant filler is more suitable under alkaline condition
Reaction；Reference examples 9 and example 10, using the silane coupling agent of equivalent one pack system, effect is still bad, illustrates to compound silane-modified liquid
Treatment effect it is relatively good；Therefore there is excellent fireproof flame-retardant effect using flame-retarded resin type crust prepared by the present invention.
Claims (6)
1. a kind of flame retardant type power cable, which is characterized in that including inner core and housing, the inner core includes outside conductor and conductor
The insulating layer of side, the housing are followed successively by shielded layer, steel-tape armouring layer, polyethylene layer and flame-retarded resin type from inside to outside
Crust.
2. a kind of flame retardant type power cable according to claim 1, which is characterized in that the insulating layer and shielded layer it
Between cavity in be filled with fire proofing.
3. a kind of flame retardant type power cable according to claim 1, which is characterized in that the outside diameter of cable is 10-
100mm 。
4. a kind of flame retardant type power cable according to claim 1, which is characterized in that the conductor is copper conductor.
5. a kind of flame retardant type power cable according to claim 2, which is characterized in that the fire proofing is glass fibers
Dimension.
6. a kind of flame retardant type power cable according to claim 1, which is characterized in that the shielded layer is braiding copper
Net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810788811.0A CN108922685A (en) | 2018-07-18 | 2018-07-18 | A kind of flame retardant type power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810788811.0A CN108922685A (en) | 2018-07-18 | 2018-07-18 | A kind of flame retardant type power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108922685A true CN108922685A (en) | 2018-11-30 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810788811.0A Pending CN108922685A (en) | 2018-07-18 | 2018-07-18 | A kind of flame retardant type power cable |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201435245Y (en) * | 2009-05-05 | 2010-03-31 | 安徽猎塔电缆集团有限公司 | Environment-friendly composite screened control cable |
| CN201773638U (en) * | 2010-05-20 | 2011-03-23 | 无锡市黄浦电线电缆有限公司 | Fireproof, heat-proof and environment-friendly power cable |
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| CN104086835A (en) * | 2014-06-24 | 2014-10-08 | 宁国市日格美橡塑制品有限公司 | Wear-resistant heat-resistant anti-aging rubber material |
| CN104517670A (en) * | 2014-12-16 | 2015-04-15 | 大连沈特电缆有限公司 | Copper-clad aluminum-core anti-flaming fire-resistant control cable |
| CN105440676A (en) * | 2015-12-11 | 2016-03-30 | 中冠电缆有限公司 | Modified particle for nuclear power station irradiation-resistant cable insulation material and preparation method thereof |
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2018
- 2018-07-18 CN CN201810788811.0A patent/CN108922685A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201435245Y (en) * | 2009-05-05 | 2010-03-31 | 安徽猎塔电缆集团有限公司 | Environment-friendly composite screened control cable |
| CN201773638U (en) * | 2010-05-20 | 2011-03-23 | 无锡市黄浦电线电缆有限公司 | Fireproof, heat-proof and environment-friendly power cable |
| CN102623101A (en) * | 2011-01-27 | 2012-08-01 | 江苏晨光电缆有限公司 | An early stage fault monitoring communication cable for PEEK insulated transformer |
| CN104086835A (en) * | 2014-06-24 | 2014-10-08 | 宁国市日格美橡塑制品有限公司 | Wear-resistant heat-resistant anti-aging rubber material |
| CN104517670A (en) * | 2014-12-16 | 2015-04-15 | 大连沈特电缆有限公司 | Copper-clad aluminum-core anti-flaming fire-resistant control cable |
| CN105440676A (en) * | 2015-12-11 | 2016-03-30 | 中冠电缆有限公司 | Modified particle for nuclear power station irradiation-resistant cable insulation material and preparation method thereof |
Non-Patent Citations (1)
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Application publication date: 20181130 |