CN109473236A - The manufacturing process of B1 grades of environmentally protective medium-pressure power cables of multistoried building - Google Patents
The manufacturing process of B1 grades of environmentally protective medium-pressure power cables of multistoried building Download PDFInfo
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- CN109473236A CN109473236A CN201811248931.8A CN201811248931A CN109473236A CN 109473236 A CN109473236 A CN 109473236A CN 201811248931 A CN201811248931 A CN 201811248931A CN 109473236 A CN109473236 A CN 109473236A
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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
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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
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
-
- 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
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
- H01B13/262—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping of an outer metallic screen
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- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables, the cable includes insulated wire cores, oxygen barrier layer, metal armor layers, oversheath, the insulated wire cores further comprise copper conductor and the conductor shield, insulating layer and insulation screen that are coated on outer surface of copper conductor from inside to outside, and the insulation screen outer surface is coated with a metal screen layer；One glass fibre band is wrapped in the first wrapping layer of composition outside metal screen layer, gasket for packing is provided between this first wrapping layer and metal screen layer, the oxygen barrier layer is coated on the first wrapping layer outer surface, the metal armor layers are surrounded with one second wrapping layer around oxygen barrier layer outer surface, the metal armor layers outer surface is wrapped in；The oversheath is extruded in the second wrapping layer outer surface；Cable made from the manufacturing process can satisfy B1 grades of flame-retardancy requirements, can slow down the sprawling of the intensity of a fire when fire occurs for building, try to gain time precious to one to personnel escape and fire-fighting and rescue.
Description
Technical field
The present invention relates to field of cable technology more particularly to a kind of multistoried building B1 grades of environmentally protective medium voltage electricity electricity
The manufacturing process of cable.
Background technique
China requires constantly to be promoted for cable security performance at present, the especially burning of multistoried building wire and cable
Comprehensive performance needs to reach B1 grades in GB 31247-2014 of requirement, and super high-rise building field supply load itself is larger, warp
It powers frequently with midium voltage cable.
However, the midium voltage cable for Super High power supply is mostly flame-proof polyvinyl chloride sheath and low smoke and zero halogen currently on the market
Flame retardant cable, flame retardant property are only limitted to meet requirement fire-retardant in national standard GB/T 19666-2005, are unable to satisfy now new
Code requirement, these cables may release a large amount of heat when fire occurs, bring to personnel escape and fire-fighting and rescue
Very big difficulty, it may be said that the midium voltage cable that super high-rise building field meets B1 grades of performance requirements still falls within sky in the market at present
It is white.Therefore, satisfactory mechanical property can be manufactured by how developing one kind, and can satisfy the super high-rise building of B1 grades of flame-retardancy requirements
Become the direction that those skilled in the art make great efforts with the manufacturing process of middle medium-pressure power cable.
Summary of the invention
It is an object of that present invention to provide a kind of manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables,
Cable machinery made from the manufacturing process is functional, and can satisfy B1 grades of flame-retardancy requirements, can when fire occurs for building
The sprawling for slowing down the intensity of a fire, tries to gain time precious to one to personnel escape and fire-fighting and rescue.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of multistoried building B1 grades it is environmentally protective in
The manufacturing process of piezoelectric forces cable, the multistoried building B1 grades of environmentally protective medium-pressure power cables include insulated wire cores, every
Oxygen layer, metal armor layers, oversheath, the insulated wire cores further comprise copper conductor and are coated on outside copper conductor from inside to outside
Conductor shield, insulating layer and the insulation screen on surface, the insulation screen outer surface are coated with a metal screen layer；
One glass fibre band is wrapped to form the first wrapping layer outside the metal screen layer, this first wrapping layer and metal screen layer it
Between be provided with gasket for packing, the oxygen barrier layer is coated on the first wrapping layer outer surface, and the metal armor layers are around being wrapped in outside oxygen barrier layer
Surface, the metal armor layers outer surface are surrounded with one second wrapping layer, and the oversheath is extruded in the second wrapping layer outer surface；
The oversheath is grouped as by the group of following parts by weight:
20 ~ 30 parts of ethylene-vinyl acetate copolymer,
5 ~ 10 parts of maleic anhydride grafted polyethylene,
40 ~ 50 parts of aluminium hydroxide,
1 ~ 5 part of powdered whiting,
1 ~ 3 part of silicone masterbatch,
1 ~ 5 part of pentaerythritol phosphate,
0.1 ~ 1 part of calcium titanate,
0.5 ~ 1 part of antioxidant,
0.1 ~ 1 part of lubricant,
α, 0.5 ~ 2 part of omega end hydroxyl dimethyl silicone polymer,
0.1 ~ 2 part of dioctyl terephthalate,
0.1 ~ 1 part of Myrj 45；
The oversheath is obtained by following steps:
S1. 20 ~ 30 parts of ethylene-vinyl acetate copolymer, 5 ~ 10 parts of maleic anhydride grafted polyethylene, aluminium hydroxide 40 ~ 50 are weighed
Part, 1 ~ 5 part of powdered whiting, 1 ~ 3 part of silicone masterbatch, 1 ~ 5 part of pentaerythritol phosphate, 0.1 ~ 1 part of calcium titanate, antioxidant 0.5 ~
1 part, 0.1 ~ 1 part of lubricant, α, 0.5 ~ 2 part of omega end hydroxyl dimethyl silicone polymer, 0.1 ~ 2 part of dioctyl terephthalate are gathered
It in 0.1 ~ 1 part of investment mixer of ethylene oxide stearate, is kneaded in mixer to 140 DEG C, is uniformly mixed various components, shape
At glue stuff compounding；
S2. glue stuff compounding made from S1 is introduced into double screw extruder melting extrusion processing by taper feeding hopper, then through single spiral shell
Bar extruding pelletization obtains jacketed cable material, spare；
S3. by CABLE MATERIALS obtained by S2 by extruding machine 120 ~ 130 DEG C of an area, 130 ~ 150 DEG C of 2nd area, 145 ~ 165 DEG C of 3rd area,
Four 145 ~ 165 DEG C of areas squeeze out at a temperature of 140 ~ 160 DEG C of head, are coated on the second wrapping layer outer surface, obtain the outer shield
Set.
Further improved technical solution is as follows in above-mentioned technical proposal:
1. in above scheme, several aramid fiber ropes are provided in the oversheath.
2. in above scheme, the oxygen barrier layer with a thickness of 2 ~ 4mm.
3. in above scheme, the copper conductor is the annealing copper conductor or the insulating layer of the 2nd kind of not metal cladding
It is semiconductive screen for insulating layer made from use cross-linked polyethylene insulating material or the conductor shield and insulation screen
It covers layer or the metal screen layer is the shielding that the copper strips by one layer of overlapping around each insulated wire cores outer surface forms
Perhaps the gasket for packing is low-smoke non-halogen flame-retardant gasket for packing or first wrapping layer to layer and the second wrapping layer is glass
Perhaps the oxygen barrier layer is low smoke and zero halogen oxygen barrier layer to fiber package band wrapping layer or the metal armor layers are the double-deck galvanized steel
Band armor.
4. in above scheme, the antioxidant be in antioxidant 1076 or antioxidant 1035 or antioxidant 1010 extremely
Few one kind.
5. in above scheme, the lubricant is one kind of polyethylene wax or calcium stearate or silicon series lubricant agent.
6. in above scheme, the average grain diameter of the powdered whiting is 1 ~ 50 μm.
Due to the application of the above technical scheme, compared with the prior art, the invention has the following advantages:
1. the manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables of the present invention, it is provided in oversheath
Several aramid fiber ropes, improve cable tensile strength, avoid winding, pull the phenomenon of rupture occurred when occasion use,
Substantially increase cable service life and reliability；In addition, it is provided with the double-deck zinc-plated steel-tape armouring layer in oxygen barrier layer outer surface,
The armor can prevent cable from bearing larger mechanical pressure to the damage inside cable, and further improve cable uses the longevity
Life；Simultaneously on the one hand wrapped second wrapping layer also outside armor, the wrapping layer play a protective role to metal armor layers, prevent
Only oversheath is extruded into armor, and the effect for preventing flame from longitudinally spreading when on the other hand also functioning to fire improves electricity
The fire protecting performance of cable.
2. the manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables of the present invention, jacket material
On the basis of 40 ~ 50 parts of aluminium hydroxide, 1 ~ 5 part and 1 ~ 5 part of pentaerythritol phosphate of powdered whiting, it is additionally added to metatitanic acid
0.1 ~ 1 part of calcium and α, 0.5 ~ 2 part of omega end hydroxyl dimethyl silicone polymer constitutes compound smoke-inhibiting flame retardant system, has in burning
It is good at charcoal effect, be capable of forming the protection layer of charcoal of continuous densification, it is suppressed that the transmitting of cigarette and heat and oxygen and matrix
Contact, to effectively raise the fire retardant performance of material；The present invention is protected using the polyolefine material as outside cable
Set, can not only effectively avoid the generation or sprawling of fire, and the characteristic of low smoke and zero halogen also can be fiery to occur in super high-rise building
Personnel escape and fire-fighting and rescue try to gain time precious to one when calamity.
3. the manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables of the present invention, jacket material
Basis material is used as using 20 ~ 30 parts of ethylene-vinyl acetate copolymer and 5 ~ 10 parts of maleic anhydride grafted polyethylene, and to benzene two
0.1 ~ 1 part of collaboration of 0.1 ~ 2 part of formic acid dioctyl ester and Myrj 45 uses, and polyolefin jacket material crosslinking obtained is close
Degree is high, and mechanical property is obviously improved, and tensile strength reaches 15Mpa or more, and for elongation at break up to 300% or more, the present invention uses this
Polyolefine material as cable jacket can effectively avoid installation or use process in cable due to by overbending, draw
The problem of stretching, reversing and influence service life.
Detailed description of the invention
Attached drawing 1 is multistoried building B1 grades of the present invention environmentally protective medium-pressure power cable structural schematic diagrams；
In the figures above: 1, insulated wire cores；11, copper conductor；12, conductor shield；13, insulating layer；14, insulation screen；2,
Metal screen layer；3, the first wrapping layer；4, gasket for packing；5, oxygen barrier layer；6, metal armor layers；7, the second wrapping layer；8, oversheath；
81, aramid fiber rope.
Specific embodiment
The present invention will be further described below with reference to examples:
Embodiment 1 ~ 4: a kind of manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables, the Super High are built
Building with B1 grades of environmentally protective medium-pressure power cables includes insulated wire cores 1, oxygen barrier layer 5, metal armor layers 6, oversheath 8, it is described absolutely
Edge core 1 further comprises copper conductor 11 and is coated on the conductor shield 12 of 11 outer surface of copper conductor, insulation from inside to outside
Layer 13 and insulation screen 14,14 outer surface of insulation screen are coated with a metal screen layer 2；
One glass fibre band is wrapped in the first wrapping layer 3 of composition, this first wrapping layer 3 and metallic shield outside metal screen layer 2
Gasket for packing 4 is provided between layer 2, and the oxygen barrier layer 5 is coated on 3 outer surface of the first wrapping layer, and the metal armor layers 6 are around being wrapped in
5 outer surface of oxygen barrier layer, 6 outer surface of metal armor layers are surrounded with one second wrapping layer 7, and the oversheath 8 is extruded in second
7 outer surface of wrapping layer；
Several aramid fiber ropes 81 are provided in the oversheath 8；
The copper conductor 11 is the 2nd kind, and the annealing copper conductor of metal cladding or the insulating layer 13 are not using the poly- second of crosslinking
Insulating layer made from alkene Insulation Material perhaps the conductor shield 12 and insulation screen 14 be semiconductive shielding layer or
The metal screen layer 2 is the shielded layer that the copper strips by one layer of overlapping around each 1 outer surface of insulated wire cores forms, Huo Zhesuo
It is glass fiber package that gasket for packing 4, which is stated, as low-smoke non-halogen flame-retardant gasket for packing or first wrapping layer 3 and the second wrapping layer 7
Perhaps the oxygen barrier layer 5 is low smoke and zero halogen oxygen barrier layer to band wrapping layer or the metal armor layers 6 are the double-deck galvanized steel strip armour
Fill layer；
The oversheath 8 is grouped as by the group of following parts by weight:
Table 1
| Component | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Ethylene-vinyl acetate copolymer | 20 | 30 | 23 | 28 |
| Maleic anhydride grafted polyethylene | 10 | 9 | 5 | 6 |
| Aluminium hydroxide | 40 | 43 | 50 | 48 |
| Powdered whiting | 5 | 1 | 2 | 4 |
| Silicone masterbatch | 2 | 1 | 3 | 3 |
| Pentaerythritol phosphate | 1 | 4 | 5 | 2 |
| Calcium titanate | 0.4 | 0.8 | 0.1 | 1 |
| Antioxidant | 0.8 | 1 | 0.6 | 0.5 |
| Lubricant | 0.7 | 0.1 | 0.5 | 1 |
| Alpha, omega end hydroxyl dimethyl silicone polymer | 2 | 0.5 | 1 | 1.5 |
| Dioctyl terephthalate | 0.1 | 2 | 1.5 | 0.9 |
| Myrj 45 | 0.7 | 0.1 | 1 | 0.5 |
The antioxidant of embodiment 1 and embodiment 2 is antioxidant 1076, and the antioxidant of embodiment 3 is antioxidant 1035, is implemented
The antioxidant of example 4 is antioxidant 1010；
The lubricant of embodiment 1 is polyethylene wax, and the lubricant of embodiment 2 is calcium stearate, the profit of embodiment 3 and embodiment 4
Lubrication prescription is silicon series lubricant agent；
The oversheath 8 is obtained by following steps:
S1. 20 ~ 30 parts of ethylene-vinyl acetate copolymer, 5 ~ 10 parts of maleic anhydride grafted polyethylene, aluminium hydroxide 40 ~ 50 are weighed
Part, 1 ~ 5 part of powdered whiting, 1 ~ 3 part of silicone masterbatch, 1 ~ 5 part of pentaerythritol phosphate, 0.1 ~ 1 part of calcium titanate, antioxidant 0.5 ~
1 part, 0.1 ~ 1 part of lubricant, α, 0.5 ~ 2 part of omega end hydroxyl dimethyl silicone polymer, 0.1 ~ 2 part of dioctyl terephthalate are gathered
It in 0.1 ~ 1 part of investment mixer of ethylene oxide stearate, is kneaded in mixer to 140 DEG C, is uniformly mixed various components, shape
At glue stuff compounding；
S2. glue stuff compounding made from S1 is introduced into double screw extruder melting extrusion processing by taper feeding hopper, then through single spiral shell
Bar extruding pelletization obtains jacketed cable material, spare；
S3. by CABLE MATERIALS obtained by S2 by extruding machine 120 ~ 130 DEG C of an area, 130 ~ 150 DEG C of 2nd area, 145 ~ 165 DEG C of 3rd area,
Four 145 ~ 165 DEG C of areas squeeze out at a temperature of 140 ~ 160 DEG C of head, are coated on 7 outer surface of the second wrapping layer, obtain described outer
Sheath 8.
Comparative example 1 ~ 3: a kind of polyolefin jacket material is grouped as by the group of following parts by weight:
Table 2
The antioxidant of comparative example 1 is antioxidant 1076, and the antioxidant of comparative example 2 is antioxidant 1035, and the antioxidant of comparative example 3 is
Antioxidant 1010；
The lubricant of comparative example 1 is polyethylene wax, and the lubricant of comparative example 2 is calcium stearate, and 3 lubricant of comparative example is silicon class profit
Lubrication prescription；
Preparation method is conventional method.
The polyolefin jacket material property detection data of each embodiment and comparative example preparation is as follows:
Table 3
As shown in Table 3, polyolefin jacket material of the present invention either tensile strength and elongation at break, or cigarette when burning are close
Degree is all significantly better than each comparative example, which can improve in use process cable by outer when being used as cable jacket
Boundary's adverse circumstances influence the problem of service life, while smoke density is small when its burning and does not discharge halogen gas, be the disaster relief and
Escape provides valuable time.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables, it is characterised in that: the superelevation
Layer B1 grades of environmentally protective medium-pressure power cable for building includes insulated wire cores (1), oxygen barrier layer (5), metal armor layers (6), outer shield
It covers (8), the insulated wire cores (1) further comprise copper conductor (11) and are coated on copper conductor (11) outer surface from inside to outside
Conductor shield (12), insulating layer (13) and insulation screen (14), insulation screen (14) outer surface are coated with a gold medal
Belong to shielded layer (2)；
One glass fibre band is wrapped to form the first wrapping layer (3) in metal screen layer (2) outside, this first wrapping layer (3) and gold
Belong to and being provided with gasket for packing (4) between shielded layer (2), the oxygen barrier layer (5) is coated on the first wrapping layer (3) outer surface, the gold
Belong to armor (6) and is surrounded with one second wrapping layer around oxygen barrier layer (5) outer surface, metal armor layers (6) outer surface is wrapped in
(7), the oversheath (8) is extruded in the second wrapping layer (7) outer surface；
The oversheath (8) is grouped as by the group of following parts by weight:
20 ~ 30 parts of ethylene-vinyl acetate copolymer,
5 ~ 10 parts of maleic anhydride grafted polyethylene,
40 ~ 50 parts of aluminium hydroxide,
1 ~ 5 part of powdered whiting,
1 ~ 3 part of silicone masterbatch,
1 ~ 5 part of pentaerythritol phosphate,
0.1 ~ 1 part of calcium titanate,
0.5 ~ 1 part of antioxidant,
0.1 ~ 1 part of lubricant,
α, 0.5 ~ 2 part of omega end hydroxyl dimethyl silicone polymer,
0.1 ~ 2 part of dioctyl terephthalate,
0.1 ~ 1 part of Myrj 45；
The oversheath (8) is obtained by following steps:
S1. 20 ~ 30 parts of ethylene-vinyl acetate copolymer, 5 ~ 10 parts of maleic anhydride grafted polyethylene, aluminium hydroxide 40 ~ 50 are weighed
Part, 1 ~ 5 part of powdered whiting, 1 ~ 3 part of silicone masterbatch, 1 ~ 5 part of pentaerythritol phosphate, 0.1 ~ 1 part of calcium titanate, antioxidant 0.5 ~
1 part, 0.1 ~ 1 part of lubricant, α, 0.5 ~ 2 part of omega end hydroxyl dimethyl silicone polymer, 0.1 ~ 2 part of dioctyl terephthalate are gathered
It in 0.1 ~ 1 part of investment mixer of ethylene oxide stearate, is kneaded in mixer to 140 DEG C, is uniformly mixed various components, shape
At glue stuff compounding；
S2. glue stuff compounding made from S1 is introduced into double screw extruder melting extrusion processing by taper feeding hopper, then through single spiral shell
Bar extruding pelletization obtains jacketed cable material, spare；
S3. by CABLE MATERIALS obtained by S2 by extruding machine 120 ~ 130 DEG C of an area, 130 ~ 150 DEG C of 2nd area, 145 ~ 165 DEG C of 3rd area,
Four 145 ~ 165 DEG C of areas squeeze out at a temperature of 140 ~ 160 DEG C of head, are coated on the second wrapping layer (7) outer surface, obtain described
Oversheath (8).
2. the manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, special
Sign is: being provided with several aramid fiber ropes (81) in the oversheath (8).
3. the manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, special
Sign is: the oxygen barrier layer (5) with a thickness of 2 ~ 4mm.
4. the manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, special
Sign is: the copper conductor (11) is the 2nd kind, and the annealing copper conductor of metal cladding or the insulating layer (13) are not using friendship
Join insulating layer made from insulating material of polyethylene or the conductor shield (12) and insulation screen (14) are semiconductive screen
It covers layer or the metal screen layer (2) is what the copper strips being overlapped by one layer around each insulated wire cores (1) outer surface formed
Perhaps the gasket for packing (4) is that low-smoke non-halogen flame-retardant gasket for packing or first wrapping layer (3) and second are wrapped to shielded layer
Layer (7) is that perhaps the oxygen barrier layer (5) is low smoke and zero halogen oxygen barrier layer or the metal armour to glass fibre band wrapping layer
Filling layer (6) is the double-deck zinc-plated steel-tape armouring layer.
5. the manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, special
Sign is: the antioxidant is antioxidant 1076 or at least one of antioxidant 1035 or antioxidant 1010.
6. the manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, special
Sign is: the lubricant is one kind of polyethylene wax or calcium stearate or silicon series lubricant agent.
7. the manufacturing process of multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, special
Sign is: the average grain diameter of the powdered whiting is 1 ~ 50 μm.
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| CN201811248931.8A CN109473236B (en) | 2018-10-25 | 2018-10-25 | Manufacturing process of B1-grade green environment-friendly medium-voltage power cable for super high-rise building |
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| CN112397242A (en) * | 2019-08-15 | 2021-02-23 | 江苏亨通电力电缆有限公司 | Fire-resistant 1100 ℃ mineral low-voltage cable and preparation method thereof |
| CN112876758A (en) * | 2021-01-13 | 2021-06-01 | 江苏亨通电力电缆有限公司 | B1-level control cable for power equipment and manufacturing process |
| CN113416406A (en) * | 2021-07-27 | 2021-09-21 | 中广核高新核材科技（苏州）有限公司 | TPU fuel inhibitor and preparation method thereof |
| CN116721805A (en) * | 2023-06-19 | 2023-09-08 | 江苏锡缆特种线缆有限公司 | Cable with flame-retardant high-temperature-resistant polyvinyl chloride sheath and extrusion molding process thereof |
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| CN112397242A (en) * | 2019-08-15 | 2021-02-23 | 江苏亨通电力电缆有限公司 | Fire-resistant 1100 ℃ mineral low-voltage cable and preparation method thereof |
| CN112876758A (en) * | 2021-01-13 | 2021-06-01 | 江苏亨通电力电缆有限公司 | B1-level control cable for power equipment and manufacturing process |
| CN113416406A (en) * | 2021-07-27 | 2021-09-21 | 中广核高新核材科技（苏州）有限公司 | TPU fuel inhibitor and preparation method thereof |
| CN116721805A (en) * | 2023-06-19 | 2023-09-08 | 江苏锡缆特种线缆有限公司 | Cable with flame-retardant high-temperature-resistant polyvinyl chloride sheath and extrusion molding process thereof |
| CN116721805B (en) * | 2023-06-19 | 2023-11-21 | 江苏锡缆特种线缆有限公司 | Cable with flame-retardant high-temperature-resistant polyvinyl chloride sheath and extrusion molding process thereof |
| CN118388825A (en) * | 2024-06-25 | 2024-07-26 | 北新防水(安徽)有限公司 | Preparation method of heat-resistant modified asphalt waterproof coiled material |
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