CN114171247A - Ceramic polyolefin insulation high-flame-retardant fireproof cable and preparation process thereof - Google Patents
Ceramic polyolefin insulation high-flame-retardant fireproof cable and preparation process thereof Download PDFInfo
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- CN114171247A CN114171247A CN202111500892.8A CN202111500892A CN114171247A CN 114171247 A CN114171247 A CN 114171247A CN 202111500892 A CN202111500892 A CN 202111500892A CN 114171247 A CN114171247 A CN 114171247A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 100
- 239000003063 flame retardant Substances 0.000 title claims abstract description 99
- 238000009413 insulation Methods 0.000 title claims abstract description 50
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 37
- 239000001301 oxygen Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 19
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 81
- -1 polytetrafluoroethylene Polymers 0.000 claims description 56
- 239000003365 glass fiber Substances 0.000 claims description 47
- 229910000838 Al alloy Inorganic materials 0.000 claims description 45
- 238000011049 filling Methods 0.000 claims description 38
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 38
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 38
- 239000004020 conductor Substances 0.000 claims description 34
- 239000010445 mica Substances 0.000 claims description 33
- 229910052618 mica group Inorganic materials 0.000 claims description 33
- 230000009970 fire resistant effect Effects 0.000 claims description 32
- 239000003963 antioxidant agent Substances 0.000 claims description 24
- 230000003078 antioxidant effect Effects 0.000 claims description 24
- 239000007822 coupling agent Substances 0.000 claims description 24
- 239000000314 lubricant Substances 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 24
- 239000000843 powder Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 22
- 230000004888 barrier function Effects 0.000 claims description 21
- 239000004743 Polypropylene Substances 0.000 claims description 18
- 239000000853 adhesive Substances 0.000 claims description 18
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 18
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 18
- 229920001155 polypropylene Polymers 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 18
- 239000000779 smoke Substances 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical group O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 238000005491 wire drawing Methods 0.000 claims description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 claims description 6
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 6
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 6
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 6
- 239000000194 fatty acid Substances 0.000 claims description 6
- 229930195729 fatty acid Natural products 0.000 claims description 6
- 125000005313 fatty acid group Chemical group 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229920002554 vinyl polymer Polymers 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims 2
- 230000007613 environmental effect Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 239000002341 toxic gas Substances 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000002955 isolation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
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- 239000000945 filler Substances 0.000 description 1
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- 239000002023 wood Substances 0.000 description 1
Images
Classifications
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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
-
- 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
- H01B13/06—Insulating conductors or cables
-
- 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
-
- 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
- H01B7/02—Disposition of insulation
-
- 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; 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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention belongs to the technical field of cable equipment, and particularly relates to a ceramic polyolefin insulating high-flame-retardant fireproof cable and a preparation process thereof. According to the ceramic polyolefin insulating high-flame-retardant fireproof cable and the preparation process, the inner liner layer and the ceramic oxygen insulating layer are arranged, so that the cable has excellent insulativity, excellent fire resistance and water resistance, and good heat insulation and temperature insulation properties; the strength is high, the vibration resistance is good, and the high and low temperature resistance is excellent; the process performance is good, no toxic gas is released during combustion, and the safety and the environmental protection are excellent; simple process, high production efficiency and greatly reduced processing cost.
Description
Technical Field
The invention relates to the technical field of cable equipment, in particular to a ceramic polyolefin insulation high-flame-retardant fireproof cable and a preparation process thereof.
Background
A cable is a power or signal transmission device, and is generally composed of several wires or groups of wires.
The fire-resistant cable is widely applied to places related to fire safety and fire fighting and lifesaving, such as high-rise buildings, underground railways, underground streets, large-scale power stations, important industrial and mining enterprises and the like. At present, most fireproof electric wires and cables at home and abroad adopt magnesium oxide mineral insulated cables and fireproof cables wound by mica tapes. However, although the magnesium oxide mineral insulated cable has good fire resistance, can work at a high temperature of 250 ℃ for a long time, and has the characteristics of explosion resistance, strong corrosion resistance, small volume, light weight, long service life and no smoke, the magnesium oxide mineral insulated cable is expensive, complex in process, difficult to construct, and can be used in occasions with high fire resistance requirements and acceptable economy such as oil-filled areas, important wood structure public buildings, high-temperature places and the like, but only can be used for low-voltage fire-resistant cables. The mica tape wound fire-resistant cable is limited by process conditions, so that seams are prone to defects, the mica tape is fragile after ablation and easy to fall off, the fire-resistant effect is poor, meanwhile, in the fire fighting process, when the mica tape is sprayed, the mica tape is prone to being affected with damp, losing insulativity and falling off easily due to vibration, and therefore the safety and smoothness of long-time communication and electric power under the condition of fire are difficult to guarantee. Therefore, a ceramic polyolefin insulation high flame-retardant fireproof cable and a preparation process thereof are needed.
Disclosure of Invention
Based on the prior art, the invention provides a ceramic polyolefin insulation high-flame-retardant fireproof cable and a preparation process thereof.
The invention provides a ceramic polyolefin insulation high flame-retardant fireproof cable and a preparation process thereof, wherein the ceramic polyolefin insulation high flame-retardant fireproof cable comprises conductors, wherein a plurality of conductors are mutually connected together, the outer surfaces of the plurality of conductors are wrapped with fire-resistant mica tapes, the surfaces of the fire-resistant mica tapes are wrapped with insulating layers, the four insulating layers are arranged and distributed in a quartering manner by taking an intersection point of axis connection as a circle center, and the outer surfaces of the four insulating layers are filled with flame-retardant filling layers;
the outer surface of the flame-retardant filling layer is wrapped with an inner liner, the outer surface of the inner liner is wrapped with an aluminum alloy belt armoring layer, the outer surface of the aluminum alloy belt armoring layer is wrapped with a ceramic armoring oxygen separation layer, the outer surface of the ceramic armoring oxygen separation layer is wrapped with a glass fiber belting, and the outer surface of the glass fiber belting is wrapped with a low smoke zero halogen outer sheath.
Preferably, the conductor is made of copper, and the components sequentially coated outside the conductor are respectively made of: the fire-resistant mica tape is made of synthetic mica; the insulating layer is made of polytetrafluoroethylene; the flame-retardant filling layer is made of flame-retardant fibers; the lining layer is made of a mixture of a glass fiber belt and polypropylene wire drawing-grade resin; the aluminum alloy belt binding layer is made of aluminum alloy; the material of the ceramic oxygen barrier layer is a mixture of ethylene-vinyl acetate copolymer, a flame retardant, ceramic powder, a fluxing agent, a coupling agent, an antioxidant and a lubricant; the glass fiber wrapping tape is made of glass fiber, and the low-smoke halogen-free outer sheath is made of polyolefin.
Preferably, the inner liner comprises, by mass, 50-80 parts of a glass fiber tape and 20-50 parts of polypropylene wire-drawing-grade resin, and the ceramic oxidation barrier comprises, by mass, 40-90 parts of an ethylene-vinyl acetate copolymer, 10-60 parts of a flame retardant, 40-90 parts of ceramic powder, 10-30 parts of an adhesive, 3-8 parts of a coupling agent, 3-8 parts of an antioxidant and 3-4 parts of a lubricant.
Preferably, the flame retardant is antimony trioxide, and the ceramic powder is clay.
Preferably, the adhesive is a phenolic-polyvinyl acetal adhesive, and the coupling agent is DL 171.
Preferably, the antioxidant is zinc dialkyl dithiophosphate, and the lubricant is fatty acid amide.
Preferably, the thickness of the aluminum alloy belt binding layer is 5.7-6.4 mm, and the oxygen index of the aluminum alloy belt binding layer is 40.
Preferably, the thickness of the ceramic oxygen isolation layer is 3.6-4.4 mm.
Preferably, the thickness of the inner liner layer is 2.8-5.6 mm.
Preferably, the step one: wrapping and sleeving fire-resistant mica tapes on the surfaces of the plurality of conductors, and extruding a polytetrafluoroethylene insulating material on the surfaces of the conductors after sleeving to form a polytetrafluoroethylene insulating layer wrapping the surfaces of the copper conductors;
step two: the four polytetrafluoroethylene insulation layers in the first step are connected with each other and vertically and horizontally arranged, the surface of the four polytetrafluoroethylene insulation layers is filled with the flame-retardant filling layer, the intersection point of the four polytetrafluoroethylene insulation layers is used as the circle center, the flame-retardant filling layer is controlled to be formed into a cylindrical shape to wrap the four polytetrafluoroethylene insulation layers, and a mixture material of a glass fiber tape and polypropylene wire drawing grade resin is extruded on the outer surface of the four polytetrafluoroethylene insulation layers to form an inner liner layer wrapping the flame-retardant filling layer;
step three: wrapping an aluminum alloy strip binding layer on the surface of the inner liner layer in the second step;
step four: and sequentially adding the ethylene-vinyl acetate copolymer, the flame retardant, the ceramic powder, the fluxing agent, the coupling agent, the antioxidant and the lubricant into an internal mixer according to corresponding mass fractions, internally mixing at 130-140 ℃ for 12-14min, extruding and wrapping the mixture on the surface of the aluminum alloy belt armour layer in the third step to form a ceramic oxygen-insulating layer, winding and wrapping a glass fiber belt on the surface of the ceramic oxygen-insulating layer, and finally extruding polyolefin on the surface of the glass fiber belt to form a halogen-free low-smoke outer sheath, thereby obtaining the ceramic polyolefin insulating high-flame-retardant fireproof cable.
The beneficial effects of the invention are as follows:
the lining layer and the ceramic oxygen-isolating layer achieve excellent insulativity, excellent fire resistance and water resistance and good heat insulation and heat insulation performance; the strength is high, the vibration resistance is good, and the high and low temperature resistance is excellent; the process performance is good, no toxic gas is released during combustion, and the safety and the environmental protection are excellent; simple process, high production efficiency and greatly reduced processing cost.
Drawings
Fig. 1 is a structural perspective view of a ceramic polyolefin insulation high flame-retardant fireproof cable and a preparation process thereof.
In the figure: 1. a conductor; 2. fire-resistant mica tapes; 3. an insulating layer; 4. a flame retardant filler layer; 5. an inner liner layer; 6. an aluminum alloy strip armour layer; 7. a ceramic oxygen isolation layer; 8. glass fiber wrapping belts; 9. and a low-smoke halogen-free outer sheath.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1, a ceramic polyolefin insulation high flame-retardant fireproof cable comprises conductors 1, wherein a plurality of conductors 1 are connected with each other, fire-resistant mica tapes 2 wrap the outer surfaces of the conductors 1, and insulating layers 3 wrap the surfaces of the fire-resistant mica tapes 2, so that the effect of fire resistance of the conductors and the effect of insulation of the conductors and the fire-resistant mica tapes are achieved, four insulating layers 3 are distributed in a quartering manner by taking an intersection point connected with an axis as a circle center, and flame-retardant filling layers 4 are filled on the outer surfaces of the four insulating layers 3, so that the flame-retardant effect and the filling and filling effect of the flame-retardant filling layers on the four insulating layers inside are achieved;
the outer surface of the flame-retardant filling layer 4 is wrapped with an inner liner layer 5, and the thickness of the inner liner layer 5 is 2.8-5.6 mm; the outer surface of the inner liner layer 5 is wrapped with an aluminum alloy belt binding layer 6, the thickness of the aluminum alloy belt binding layer 6 is 5.7-6.4 mm, the oxygen index of the aluminum alloy belt binding layer 6 is 40, and the high strength, the good vibration resistance and the excellent high and low temperature resistance are achieved.
The outer surface of the aluminum alloy belt armour layer 6 is wrapped with a ceramic oxygen-isolating layer 7, and the thickness of the ceramic oxygen-isolating layer 7 is 3.6-4.4 mm, so that the high water-resisting performance, good heat-insulating performance and good temperature-insulating performance are achieved; the outer surface of the ceramic oxygen isolation layer 7 is wrapped with a glass fiber wrapping tape 8, and the outer surface of the glass fiber wrapping tape 8 is wrapped with a low-smoke halogen-free outer sheath 9, so that excellent safety and environmental friendliness are achieved; simple process, high production efficiency and greatly reduced processing cost.
The lining layer and the ceramic oxygen-isolating layer achieve excellent insulativity, excellent fire resistance and water resistance and good heat insulation and heat insulation performance; the strength is high, the vibration resistance is good, and the high and low temperature resistance is excellent; the process performance is good, no toxic gas is released during combustion, and the safety and the environmental protection are excellent; simple process, high production efficiency and greatly reduced processing cost.
Example two
Referring to fig. 1, a preparation process of a ceramic polyolefin insulation high-flame-retardant fireproof cable, comprising the following steps: the surface of the plurality of conductors 1 is wrapped and sleeved with the fire-resistant mica tapes 2, the material of the conductors 1 is copper, the material of the fire-resistant mica tapes 2 is synthetic mica, polytetrafluoroethylene insulating materials are extruded out of the surfaces of the fire-resistant mica tapes after the fire-resistant mica tapes are sleeved, a polytetrafluoroethylene insulating layer 3 wrapped on the surface of the copper conductor 1 is formed, and the material of the insulating layer 3 is polytetrafluoroethylene.
Step two: the four polytetrafluoroethylene insulation layers 3 in the first step are connected with each other and vertically and horizontally arranged, the flame-retardant filling layer 4 is filled on the surface, the flame-retardant filling layer 4 is made of flame-retardant fibers, the intersection point of the four polytetrafluoroethylene insulation layers 3 is used as the center of a circle, the flame-retardant filling layer 4 is controlled to be in a cylindrical shape and is wrapped by the four polytetrafluoroethylene insulation layers 3, a mixture material of a glass fiber belt and polypropylene wire drawing-grade resin is extruded on the outer surface of the flame-retardant filling layer 4 to form an inner liner 5 wrapped by the flame-retardant filling layer 4, the thickness of the inner liner 5 is 2.8-5.6 mm, the inner liner 5 is made of a mixture of the glass fiber belt and the polypropylene wire drawing-grade resin, and the mass percentage content of each component of the inner liner 5 is 50-80 parts of the glass fiber belt and 20-50 parts of the polypropylene wire drawing-grade resin.
Step three: and (2) wrapping an aluminum alloy belt binding layer 6 on the surface of the inner liner layer 5 in the step (II), wherein the aluminum alloy belt binding layer 6 is made of aluminum alloy, the thickness of the aluminum alloy belt binding layer 6 is 5.7-6.4 mm, and the oxygen index of the aluminum alloy belt binding layer 6 is 40.
Step four: sequentially adding ethylene-vinyl acetate copolymer, flame retardant, ceramic powder, fluxing agent, coupling agent, antioxidant and lubricant into an internal mixer according to corresponding mass fractions, internally mixing for 12-14min at 130-140 ℃, extruding and wrapping the mixture on the surface of the aluminum alloy belt armour layer 6 in the third step to form a ceramic oxygen barrier layer 7, wherein the thickness of the ceramic oxygen barrier layer 7 is 3.6-4.4 mm, the ceramic oxygen barrier layer 7 is made of a mixture of ethylene-vinyl acetate copolymer, flame retardant, ceramic powder, fluxing agent, coupling agent, antioxidant and lubricant, and the mass percentages of the components of the ceramic oxygen barrier layer 7 are respectively 40-90 parts of ethylene-vinyl acetate copolymer, 10-60 parts of flame retardant, 40-90 parts of ceramic powder, 10-30 parts of adhesive, 3-8 parts of coupling agent, 3-8 parts of antioxidant and 3-4 parts of lubricant, wherein the flame retardant is antimony trioxide, and the ceramic powder is clay; the adhesive is phenolic aldehyde-polyvinyl acetal adhesive, and the coupling agent is DL 171; the antioxidant is zinc dialkyl dithiophosphate, the lubricant is fatty acid amide, the surface of the ceramic oxygen isolation layer 7 is wound and wrapped with a glass fiber wrapping tape 8, and polyolefin is extruded on the surface of the glass fiber wrapping tape 8 to form a low-smoke halogen-free outer sheath 9, the glass fiber wrapping tape 8 is made of glass fiber, and the low-smoke halogen-free outer sheath 9 is made of polyolefin, so that the ceramic polyolefin insulating high-flame-retardant fireproof cable is obtained.
The lining layer and the ceramic oxygen-isolating layer achieve excellent insulativity, excellent fire resistance and water resistance and good heat insulation and heat insulation performance; the strength is high, the vibration resistance is good, and the high and low temperature resistance is excellent; the process performance is good, no toxic gas is released during combustion, and the safety and the environmental protection are excellent; simple process, high production efficiency and greatly reduced processing cost.
EXAMPLE III
Referring to fig. 1, a preparation process of a ceramic polyolefin insulation high-flame-retardant fireproof cable, comprising the following steps: the surface of the plurality of conductors 1 is wrapped and sleeved with the fire-resistant mica tapes 2, the material of the conductors 1 is copper, the material of the fire-resistant mica tapes 2 is synthetic mica, polytetrafluoroethylene insulating materials are extruded out of the surfaces of the fire-resistant mica tapes after the fire-resistant mica tapes are sleeved, a polytetrafluoroethylene insulating layer 3 wrapped on the surface of the copper conductor 1 is formed, and the material of the insulating layer 3 is polytetrafluoroethylene.
Step two: the four polytetrafluoroethylene insulation layers 3 in the first step are connected with each other and vertically and horizontally arranged, the flame-retardant filling layer 4 is filled on the surface, the flame-retardant filling layer 4 is made of flame-retardant fibers, the intersection points of the four polytetrafluoroethylene insulation layers 3 serve as the circle center, the flame-retardant filling layer 4 is controlled to be in a cylindrical shape, the four polytetrafluoroethylene insulation layers 3 are wrapped by the flame-retardant filling layer 4, a mixture material of a glass fiber belt and polypropylene wire drawing-level resin is extruded on the outer surface of the inner liner, an inner liner 5 wrapped on the flame-retardant filling layer 4 is formed, the thickness of the inner liner 5 is 2.8mm, the inner liner 5 is made of a mixture of the glass fiber belt and the polypropylene wire drawing-level resin, and the mass percentage content of each component of the inner liner 5 is 50 parts of the glass fiber belt and 20 parts of the polypropylene wire drawing-level resin.
Step three: and (2) wrapping an aluminum alloy belt binding layer 6 on the surface of the inner liner layer 5 in the step (II), wherein the aluminum alloy belt binding layer 6 is made of aluminum alloy, the thickness of the aluminum alloy belt binding layer 6 is 5.7mm, and the oxygen index of the aluminum alloy belt binding layer 6 is 40.
Step four: putting ethylene-vinyl acetate copolymer, flame retardant, ceramic powder, fluxing agent, coupling agent, antioxidant and lubricant into an internal mixer in sequence according to corresponding mass fractions, internally mixing for 12min at 130 ℃, extruding and wrapping the mixture on the surface of the aluminum alloy belt mounting layer 6 in the third step to form a ceramic oxygen barrier layer 7, wherein the thickness of the ceramic oxygen barrier layer 7 is 3.6mm, the ceramic oxygen barrier layer 7 is made of the mixture of ethylene-vinyl acetate copolymer, flame retardant, ceramic powder, fluxing agent, coupling agent, antioxidant and lubricant, the mass percentages of the components of the ceramic oxygen barrier layer 7 are respectively 40 parts of ethylene-vinyl acetate copolymer, 10 parts of flame retardant, 40 parts of ceramic powder, 10 parts of adhesive, 3 parts of coupling agent, 3 parts of antioxidant and 3 parts of lubricant, the flame retardant is antimony trioxide, the ceramic powder is clay; the adhesive is phenolic aldehyde-polyvinyl acetal adhesive, and the coupling agent is DL 171; the antioxidant is zinc dialkyl dithiophosphate, the lubricant is fatty acid amide, the surface of the ceramic oxygen isolation layer 7 is wound and wrapped with a glass fiber wrapping tape 8, and polyolefin is extruded on the surface of the glass fiber wrapping tape 8 to form a low-smoke halogen-free outer sheath 9, the glass fiber wrapping tape 8 is made of glass fiber, and the low-smoke halogen-free outer sheath 9 is made of polyolefin, so that the ceramic polyolefin insulating high-flame-retardant fireproof cable is obtained.
The lining layer and the ceramic oxygen-isolating layer achieve excellent insulativity, excellent fire resistance and water resistance and good heat insulation and heat insulation performance; the strength is high, the vibration resistance is good, and the high and low temperature resistance is excellent; the process performance is good, no toxic gas is released during combustion, and the safety and the environmental protection are excellent; simple process, high production efficiency and greatly reduced processing cost.
Example four
Referring to fig. 1, a preparation process of a ceramic polyolefin insulation high-flame-retardant fireproof cable, comprising the following steps: the surface of the plurality of conductors 1 is wrapped and sleeved with the fire-resistant mica tapes 2, the material of the conductors 1 is copper, the material of the fire-resistant mica tapes 2 is synthetic mica, polytetrafluoroethylene insulating materials are extruded out of the surfaces of the fire-resistant mica tapes after the fire-resistant mica tapes are sleeved, a polytetrafluoroethylene insulating layer 3 wrapped on the surface of the copper conductor 1 is formed, and the material of the insulating layer 3 is polytetrafluoroethylene.
Step two: the four polytetrafluoroethylene insulation layers 3 in the first step are connected with each other and vertically and horizontally arranged, the flame-retardant filling layer 4 is filled on the surface, the flame-retardant filling layer 4 is made of flame-retardant fibers, the intersection points of the four polytetrafluoroethylene insulation layers 3 serve as the circle center, the flame-retardant filling layer 4 is controlled to be in a cylindrical shape, the four polytetrafluoroethylene insulation layers 3 are wrapped by the flame-retardant filling layer 4, a mixture material of a glass fiber belt and polypropylene wire drawing-level resin is extruded on the outer surface of the inner liner, an inner liner 5 wrapped on the flame-retardant filling layer 4 is formed, the thickness of the inner liner 5 is 4.2mm, the inner liner 5 is made of a mixture of the glass fiber belt and the polypropylene wire drawing-level resin, and the mass percentage content of each component of the inner liner 5 is 65 parts of the glass fiber belt and 35 parts of the polypropylene wire drawing-level resin.
Step three: and (2) wrapping an aluminum alloy belt binding layer 6 on the surface of the inner liner layer 5 in the step (II), wherein the aluminum alloy belt binding layer 6 is made of aluminum alloy, the thickness of the aluminum alloy belt binding layer 6 is 6.1mm, and the oxygen index of the aluminum alloy belt binding layer 6 is 40.
Step four: putting ethylene-vinyl acetate copolymer, flame retardant, ceramic powder, fluxing agent, coupling agent, antioxidant and lubricant into an internal mixer in sequence according to corresponding mass fractions, internally mixing for 13min at 135 ℃, extruding and wrapping the mixture on the surface of the aluminum alloy belt mounting layer 6 in the third step to form a ceramic oxygen barrier layer 7, wherein the thickness of the ceramic oxygen barrier layer 7 is 4mm, the ceramic oxygen barrier layer 7 is made of the mixture of ethylene-vinyl acetate copolymer, flame retardant, ceramic powder, fluxing agent, coupling agent, antioxidant and lubricant, the mass percentages of the components of the ceramic oxygen barrier layer 7 are respectively 65 parts of ethylene-vinyl acetate copolymer, 35 parts of flame retardant, 65 parts of ceramic powder, 20 parts of adhesive, 5.5 parts of coupling agent, 5.5 parts of antioxidant and 3.5 parts of lubricant, the flame retardant is antimony trioxide, the ceramic powder is clay; the adhesive is phenolic aldehyde-polyvinyl acetal adhesive, and the coupling agent is DL 171; the antioxidant is zinc dialkyl dithiophosphate, the lubricant is fatty acid amide, the surface of the ceramic oxygen isolation layer 7 is wound and wrapped with a glass fiber wrapping tape 8, and polyolefin is extruded on the surface of the glass fiber wrapping tape 8 to form a low-smoke halogen-free outer sheath 9, the glass fiber wrapping tape 8 is made of glass fiber, and the low-smoke halogen-free outer sheath 9 is made of polyolefin, so that the ceramic polyolefin insulating high-flame-retardant fireproof cable is obtained.
The lining layer and the ceramic oxygen-isolating layer achieve excellent insulativity, excellent fire resistance and water resistance and good heat insulation and heat insulation performance; the strength is high, the vibration resistance is good, and the high and low temperature resistance is excellent; the process performance is good, no toxic gas is released during combustion, and the safety and the environmental protection are excellent; simple process, high production efficiency and greatly reduced processing cost.
EXAMPLE five
Referring to fig. 1, a preparation process of a ceramic polyolefin insulation high-flame-retardant fireproof cable, comprising the following steps: the surface of the plurality of conductors 1 is wrapped and sleeved with the fire-resistant mica tapes 2, the material of the conductors 1 is copper, the material of the fire-resistant mica tapes 2 is synthetic mica, polytetrafluoroethylene insulating materials are extruded out of the surfaces of the fire-resistant mica tapes after the fire-resistant mica tapes are sleeved, a polytetrafluoroethylene insulating layer 3 wrapped on the surface of the copper conductor 1 is formed, and the material of the insulating layer 3 is polytetrafluoroethylene.
Step two: the four polytetrafluoroethylene insulation layers 3 in the first step are connected with each other and vertically and horizontally arranged, the flame-retardant filling layer 4 is filled on the surface, the flame-retardant filling layer 4 is made of flame-retardant fibers, the intersection points of the four polytetrafluoroethylene insulation layers 3 serve as the circle center, the flame-retardant filling layer 4 is controlled to be in a cylindrical shape, the four polytetrafluoroethylene insulation layers 3 are wrapped by the flame-retardant filling layer 4, a mixture material of a glass fiber belt and polypropylene wire drawing-level resin is extruded on the outer surface of the inner liner, an inner liner 5 wrapped on the flame-retardant filling layer 4 is formed, the thickness of the inner liner 5 is 5.6mm, the inner liner 5 is made of a mixture of the glass fiber belt and the polypropylene wire drawing-level resin, and the mass percentage content of each component of the inner liner 5 is 80 parts of the glass fiber belt and 50 parts of the polypropylene wire drawing-level resin respectively.
Step three: and (2) wrapping an aluminum alloy belt binding layer 6 on the surface of the inner liner layer 5 in the step (II), wherein the aluminum alloy belt binding layer 6 is made of aluminum alloy, the thickness of the aluminum alloy belt binding layer 6 is 6.4mm, and the oxygen index of the aluminum alloy belt binding layer 6 is 40.
Step four: putting ethylene-vinyl acetate copolymer, flame retardant, ceramic powder, fluxing agent, coupling agent, antioxidant and lubricant into an internal mixer in sequence according to corresponding mass fractions, internally mixing for 14min at 140 ℃, extruding and wrapping the mixture on the surface of the aluminum alloy belt mounting layer 6 in the third step to form a ceramic oxygen barrier layer 7, wherein the thickness of the ceramic oxygen barrier layer 7 is 4.4mm, the ceramic oxygen barrier layer 7 is made of the mixture of ethylene-vinyl acetate copolymer, flame retardant, ceramic powder, fluxing agent, coupling agent, antioxidant and lubricant, the mass percentages of the components of the ceramic oxygen barrier layer 7 are respectively 90 parts of ethylene-vinyl acetate copolymer, 60 parts of flame retardant, 90 parts of ceramic powder, 30 parts of adhesive, 8 parts of coupling agent, 8 parts of antioxidant and 4 parts of lubricant, the flame retardant is antimony trioxide, the ceramic powder is clay; the adhesive is phenolic aldehyde-polyvinyl acetal adhesive, and the coupling agent is DL 171; the antioxidant is zinc dialkyl dithiophosphate, the lubricant is fatty acid amide, the surface of the ceramic oxygen isolation layer 7 is wound and wrapped with a glass fiber wrapping tape 8, and polyolefin is extruded on the surface of the glass fiber wrapping tape 8 to form a low-smoke halogen-free outer sheath 9, the glass fiber wrapping tape 8 is made of glass fiber, and the low-smoke halogen-free outer sheath 9 is made of polyolefin, so that the ceramic polyolefin insulating high-flame-retardant fireproof cable is obtained.
The lining layer and the ceramic oxygen-isolating layer achieve excellent insulativity, excellent fire resistance and water resistance and good heat insulation and heat insulation performance; the strength is high, the vibration resistance is good, and the high and low temperature resistance is excellent; the process performance is good, no toxic gas is released during combustion, and the safety and the environmental protection are excellent; simple process, high production efficiency and greatly reduced processing cost.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A pottery polyolefin insulation fire-retardant fireproof cable of height, includes conductor (1), its characterized in that: the plurality of conductors (1) are connected together, the outer surfaces of the plurality of conductors (1) are wrapped with fire-resistant mica tapes (2), the surfaces of the fire-resistant mica tapes (2) are wrapped with insulating layers (3), the four insulating layers (3) are arranged and distributed in a quartering manner by taking the intersection point of axis connection as the circle center, and the outer surfaces of the four insulating layers (3) are filled with flame-retardant filling layers (4);
the outer surface parcel of fire-retardant filling layer (4) has inner liner (5), the outer surface parcel of inner liner (5) has aluminium alloy area dress layer (6), the outer surface parcel of aluminium alloy area dress layer (6) has ceramic to be divided by oxygen layer (7), the outer surface parcel that ceramic to be divided by oxygen layer (7) of ceramic to be divided has glass band (8), the outer surface parcel of glass band (8) has low smoke and zero halogen oversheath (9).
2. The ceramic polyolefin insulated high flame retardant fireproof cable according to claim 1, wherein: the material of the conductor (1) is copper, and the materials of all components sequentially coated outside the conductor (1) are respectively as follows: the fire-resistant mica tape (2) is made of synthetic mica; the insulating layer (3) is made of polytetrafluoroethylene; the flame-retardant filling layer (4) is made of flame-retardant fibers; the lining layer (5) is made of a mixture of a glass fiber belt and polypropylene wire drawing grade resin; the aluminum alloy belt binding layer (6) is made of aluminum alloy; the material of the ceramic oxygen barrier layer (7) is a mixture of ethylene-vinyl acetate copolymer, flame retardant, ceramic powder, fluxing agent, coupling agent, antioxidant and lubricant; the glass fiber wrapping tape (8) is made of glass fiber and the low-smoke halogen-free outer sheath (9) is made of polyolefin.
3. The ceramic polyolefin insulated high flame retardant fireproof cable according to claim 2, wherein: the inner liner layer (5) comprises, by mass, 50-80 parts of a glass fiber tape and 20-50 parts of polypropylene wire-drawing-grade resin, and the ceramic oxidation barrier layer (7) comprises, by mass, 40-90 parts of an ethylene-vinyl acetate copolymer, 10-60 parts of a flame retardant, 40-90 parts of ceramic powder, 10-30 parts of an adhesive, 3-8 parts of a coupling agent, 3-8 parts of an antioxidant and 3-4 parts of a lubricant.
4. The ceramic polyolefin insulated high flame retardant fireproof cable according to claim 3, wherein: the flame retardant is antimony trioxide, and the ceramic powder is clay.
5. The ceramic polyolefin insulated high flame retardant fireproof cable according to claim 3, wherein: the adhesive is phenolic aldehyde-polyvinyl acetal adhesive, and the coupling agent is DL 171.
6. The ceramic polyolefin insulated high flame retardant fireproof cable according to claim 3, wherein: the antioxidant is zinc dialkyl dithiophosphate, and the lubricant is fatty acid amide.
7. The ceramic polyolefin insulated high flame retardant fireproof cable according to claim 1, wherein: the thickness of the aluminum alloy belt binding layer (6) is 5.7-6.4 mm, and the oxygen index of the aluminum alloy belt binding layer (6) is 40.
8. The ceramic polyolefin insulated high flame retardant fireproof cable according to claim 1, wherein: the thickness of the ceramic oxidation barrier layer (7) is 3.6-4.4 mm.
9. The ceramic polyolefin insulated high flame retardant fireproof cable according to claim 1, wherein: the thickness of the inner liner layer (5) is 2.8-5.6 mm.
10. The preparation process of the ceramic polyolefin insulation high flame-retardant fireproof cable according to any one of claims 1 to 9, which comprises the following steps: the method comprises the following steps: wrapping and sleeving fire-resistant mica tapes (2) on the surfaces of the plurality of conductors (1), extruding a polytetrafluoroethylene insulating material on the surfaces of the conductors after sleeving to form a polytetrafluoroethylene insulating layer (3) wrapping the surfaces of the copper conductors (1);
step two: the four polytetrafluoroethylene insulation layers (3) in the first step are connected with each other and vertically and horizontally arranged, the flame-retardant filling layer (4) is filled on the surface, the intersection point of the four polytetrafluoroethylene insulation layers (3) is used as the circle center, the flame-retardant filling layer (4) is controlled to be synthesized into a cylindrical shape to wrap the four polytetrafluoroethylene insulation layers (3), and a mixture material of a glass fiber tape and polypropylene wire drawing grade resin is extruded on the outer surface of the flame-retardant filling layer (4) to form an inner lining layer (5) wrapping the flame-retardant filling layer (4);
step three: wrapping an aluminum alloy strip armour layer (6) on the surface of the lining layer (5) in the second step;
step four: and sequentially adding the ethylene-vinyl acetate copolymer, the flame retardant, the ceramic powder, the fluxing agent, the coupling agent, the antioxidant and the lubricant into an internal mixer according to corresponding mass fractions, internally mixing at 130-140 ℃ for 12-14min, extruding and wrapping the mixture on the surface of the aluminum alloy belt armour layer (6) in the third step to form a ceramic oxygen-insulating layer (7), winding and wrapping a glass fiber wrapping belt (8) on the surface of the ceramic oxygen-insulating layer (7), and finally extruding polyolefin on the surface of the glass fiber wrapping belt (8) to form a low-smoke halogen-free outer sheath (9), thereby obtaining the ceramic polyolefin insulating high-flame-retardant fireproof cable.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116994834A (en) * | 2023-09-27 | 2023-11-03 | 天龙伟业线缆有限公司 | Preparation process of high-flame-retardance cable |
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