CN112309626A - Composite cable and manufacturing method thereof - Google Patents
Composite cable and manufacturing method thereof Download PDFInfo
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- CN112309626A CN112309626A CN202010647948.1A CN202010647948A CN112309626A CN 112309626 A CN112309626 A CN 112309626A CN 202010647948 A CN202010647948 A CN 202010647948A CN 112309626 A CN112309626 A CN 112309626A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2813—Protection against damage caused by electrical, chemical or water tree deterioration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention discloses a composite cable and a manufacturing method thereof, belonging to the technical field of cables and comprising a cable core, wherein the outer wall of the cable core is sequentially wrapped with a coaxial flame retardant coating, an insulating layer, a wrapping tape and a sheath, and the flame retardant coating comprises the following components in parts by mass: 8-20 parts of high-temperature resistant filler, 6-16 parts of magnesium hydroxide, 6-20 parts of flame retardant and 10-30 parts of antioxidant. This scheme is through increasing the flame retardant coating for the cable can have high temperature resistant characteristic when using, also has fire-retardant, anti-oxidant effect, and the preparation process is simple, and the material is easily obtained, through parcel multilayer structure on the cable core, makes the cable when using in external environment, can prolong the life of cable.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a composite cable and a manufacturing method thereof.
Background
A cable is an electric energy or signal transmission device, and generally consists of several or several groups of cable cores. As is well known, cables are the foundation of data communication, power supply systems are particularly important in power engineering, remote control and building engineering no matter during construction or after the cables are put into use, the cables are carriers of the power supply systems, and a strong power system and a weak power system are controlled by a power cable and a control cable respectively, so that the cables play an important role in the power systems.
Along with the use of composite materials, composite cables have become the mainstream of cables, and traditional composite cables are easy to age and spontaneous combustion when being used for a long time, especially in external environment under high-temperature irradiation, so that potential safety hazards exist, and meanwhile, after the cables are oxidized, the service life of the cables can be influenced, and the use requirements cannot be met.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a composite cable and a manufacturing method thereof, so that the cable has the characteristics of high temperature resistance, flame retardance and ageing resistance.
2. Technical scheme
In order to solve the problems, the invention adopts the following technical scheme:
the composite cable comprises a cable core, wherein the outer wall of the cable core is sequentially wrapped with a coaxial fire-resistant layer, an insulating layer, a wrapping belt and a sheath.
The refractory layer comprises the following components in parts by weight: 8-20 parts of high-temperature resistant filler, 6-16 parts of magnesium hydroxide, 6-20 parts of flame retardant and 10-30 parts of antioxidant.
The insulating layer is an ethylene propylene rubber layer.
The wrapping tape is a ceramic fiber layer.
The sheath is a low-halogen low-smoke flame-retardant polyolefin layer.
As a further scheme of the invention: the refractory layer comprises the following components in parts by weight: 10-18 parts of high-temperature resistant filler, 8-14 parts of magnesium hydroxide, 8-18 parts of flame retardant and 12-28 parts of antioxidant.
As a further scheme of the invention: the refractory layer comprises the following components in parts by weight: 12-16 parts of high-temperature resistant filler, 10-12 parts of magnesium hydroxide, 10-16 parts of flame retardant and 14-26 parts of antioxidant.
As a further scheme of the invention: the refractory layer comprises the following components in parts by weight: 14 parts of high-temperature resistant filler, 11 parts of magnesium hydroxide, 13 parts of flame retardant and 20 parts of antioxidant.
As a further scheme of the invention: the high-temperature resistant filling material is one or a mixture of more of propylene rubber, fluororubber, silicone rubber and chloroprene rubber according to any proportion.
As a further scheme of the invention: the flame retardant is one or more of an aluminum hydroxide flame retardant, a high heat-resistant boehmite flame retardant and a magnesium hydroxide flame retardant which are mixed according to any proportion.
As a further scheme of the invention: the antioxidant is one or more of multi-element hindered phenol antioxidant and phosphite antioxidant which are mixed according to any proportion.
A method of manufacturing a composite cable comprising the steps of:
s1: taking 8-20 parts of high-temperature resistant filler, 6-16 parts of magnesium hydroxide, 6-20 parts of flame retardant and 10-30 parts of antioxidant, and putting into a stirrer for mixing and stirring for 15-20min to obtain a spare fireproof spraying raw material;
s2: uniformly spraying the obtained fire-resistant spraying raw material in the step S1 on the cable core, baking the cable core through a baking box, and cooling the cable core at normal temperature after baking is finished;
s3: and (5) sleeving an insulating layer on the periphery of the fire-resistant layer in the S2, sleeving a wrapping tape on the periphery of the insulating layer, and sleeving a sheath on the periphery of the wrapping tape to obtain the finished cable.
As a further scheme of the invention: according to the operation steps in S2, the baking time of the baking oven is 10-20min, and the baking temperature is 30-45 ℃.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) according to the scheme, the fireproof layer is added, so that the cable can have high-temperature resistance and flame-retardant and antioxidant effects when in use, the preparation process is simple, and materials are easy to obtain.
(2) This scheme is through parcel multilayer structure on the cable core for when the cable used in external environment, can prolong the life of cable.
Fig. 1 is a schematic structural diagram of a composite cable according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Example 1:
the utility model provides a composite cable, includes cable core 1, and the parcel has coaxial flame retardant coating 2, insulating layer 3, band 4 and sheath 5 in order on the outer wall of cable core 1, and flame retardant coating 2 contains following component by mass: 8 parts of high-temperature resistant filler, 6 parts of magnesium hydroxide, 6 parts of flame retardant and 10 parts of antioxidant, wherein the insulating layer 3 is an ethylene propylene rubber layer, the wrapping belt 4 is a ceramic fiber layer, the sheath 5 is a low-halogen low-smoke flame-retardant polyolefin layer, the ethylene propylene rubber layer is synthetic rubber taking ethylene and propylene as main monomers, and has good insulating effect and the characteristics of ageing resistance and corrosion resistance when in use, the ceramic fiber is a fibrous light refractory material and has the characteristics of light weight and good thermal stability, the weight of the cable can be reduced, the stability of the cable is ensured, the low-halogen low-smoke flame-retardant polyolefin can bear the high temperature of 125 ℃ when in use, the cable can be prevented from being damaged by height when being outdoors, the service life of the cable is prolonged, and the high-temperature resistant filler in the flame-retardant layer 2 can enhance the high-temperature resistant effect when the cable is in use, the magnesium hydroxide releases bound water when being heated and decomposed, absorbs a large amount of latent heat to reduce the surface temperature of the synthetic material filled with the magnesium hydroxide in flame, has the functions of inhibiting the decomposition of polymers and cooling the generated combustible gas, can prevent the cable from burning due to the flame retardant, and can prevent the cable from being oxidized and aged due to the antioxidant when being used for a long time.
Specifically, the high-temperature resistant filling material is one or a mixture of more of ethylene propylene rubber, fluorine rubber, silicon rubber and chloroprene rubber according to any proportion.
Specifically, the flame retardant is one or more of an aluminum hydroxide flame retardant, a high heat-resistant boehmite flame retardant and a magnesium hydroxide flame retardant which are mixed according to any proportion.
Specifically, the antioxidant is one or more of a multi-element hindered phenol antioxidant and a phosphite antioxidant which are mixed according to any proportion.
A method of manufacturing a composite cable comprising the steps of:
the method comprises the following steps: taking 8 parts of high-temperature-resistant filler, 6 parts of magnesium hydroxide, 6 parts of flame retardant and 10 parts of antioxidant, and putting into a stirrer for mixing and stirring for 15-20min to obtain a spare fireproof spraying raw material;
step two: uniformly spraying the obtained fire-resistant spraying raw material in the step S1 on the cable core 1, baking the cable core 1 by a baking box, and cooling the cable core at normal temperature after baking is finished, wherein the baking time of the baking box is 10-20min, and the baking temperature is 30-45 ℃;
step three: and (5) sleeving a layer of insulating layer 3 on the periphery of the fire-resistant layer 2 in the S2, sleeving a layer of wrapping tape 4 on the periphery of the insulating layer 3, and sleeving a layer of sheath 5 on the periphery of the wrapping tape 4 to obtain the finished cable.
Example 2:
the utility model provides a composite cable, includes cable core 1, and the parcel has coaxial flame retardant coating 2, insulating layer 3, band 4 and sheath 5 in order on the outer wall of cable core 1, and flame retardant coating 2 contains following component by mass: 20 parts of high-temperature resistant filler, 16 parts of magnesium hydroxide, 20 parts of flame retardant and 30 parts of antioxidant, wherein the insulating layer 3 is an ethylene propylene rubber layer, the wrapping belt 4 is a ceramic fiber layer, the sheath 5 is a low-halogen low-smoke flame-retardant polyolefin layer, the ethylene propylene rubber layer is synthetic rubber taking ethylene and propylene as main monomers, and has good insulating effect and the characteristics of ageing resistance and corrosion resistance when in use, the ceramic fiber is a fibrous light refractory material and has the characteristics of light weight and good thermal stability, the weight of the cable can be reduced, the stability of the cable is ensured, the low-halogen low-smoke flame-retardant polyolefin can bear the high temperature of 125 ℃ when in use, the cable can be prevented from being damaged by high temperature when being outdoors, the service life of the cable is prolonged, and the high-temperature resistant filler in the flame-retardant layer 2 can enhance the high-temperature resistant effect when the cable is in use, the magnesium hydroxide releases bound water when being heated and decomposed, absorbs a large amount of latent heat to reduce the surface temperature of the synthetic material filled with the magnesium hydroxide in flame, has the functions of inhibiting the decomposition of polymers and cooling the generated combustible gas, can prevent the cable from burning due to the flame retardant, and can prevent the cable from being oxidized and aged due to the antioxidant when being used for a long time.
Specifically, the high-temperature resistant filling material is one or a mixture of more of ethylene propylene rubber, fluorine rubber, silicon rubber and chloroprene rubber according to any proportion.
Specifically, the flame retardant is one or more of an aluminum hydroxide flame retardant, a high heat-resistant boehmite flame retardant and a magnesium hydroxide flame retardant which are mixed according to any proportion.
Specifically, the antioxidant is one or more of a multi-element hindered phenol antioxidant and a phosphite antioxidant which are mixed according to any proportion.
A method of manufacturing a composite cable comprising the steps of:
the method comprises the following steps: taking 20 parts of high-temperature resistant filler, 16 parts of magnesium hydroxide, 20 parts of flame retardant and 30 parts of antioxidant, and putting into a stirrer for mixing and stirring for 15-20min to obtain a spare fireproof spraying raw material;
step two: uniformly spraying the obtained fire-resistant spraying raw material in the step S1 on the cable core 1, baking the cable core 1 by a baking box, and cooling the cable core at normal temperature after baking is finished, wherein the baking time of the baking box is 10-20min, and the baking temperature is 30-45 ℃;
step three: and (5) sleeving a layer of insulating layer 3 on the periphery of the fire-resistant layer 2 in the S2, sleeving a layer of wrapping tape 4 on the periphery of the insulating layer 3, and sleeving a layer of sheath 5 on the periphery of the wrapping tape 4 to obtain the finished cable.
Example 3:
the utility model provides a composite cable, includes cable core 1, and the parcel has coaxial flame retardant coating 2, insulating layer 3, band 4 and sheath 5 in order on the outer wall of cable core 1, and flame retardant coating 2 contains following component by mass: 10 parts of high-temperature resistant filling material, 8 parts of magnesium hydroxide, 8 parts of flame retardant and 12 parts of antioxidant, wherein the insulating layer 3 is an ethylene propylene rubber layer, the wrapping belt 4 is a ceramic fiber layer, the sheath 5 is a low-halogen low-smoke flame-retardant polyolefin layer, the ethylene propylene rubber layer is synthetic rubber taking ethylene and propylene as main monomers, and has good insulating effect and the characteristics of ageing resistance and corrosion resistance when in use, the ceramic fiber is a fibrous light refractory material and has the characteristics of light weight and good thermal stability, the weight of the cable can be reduced, the stability of the cable is ensured, the low-halogen low-smoke flame-retardant polyolefin can bear the high temperature of 125 ℃ when in use, the cable can be prevented from being damaged by height when being outdoors, the service life of the cable is prolonged, and the high-temperature resistant filling material in the flame-retardant layer 2 can enhance the high-temperature resistant effect when the cable is used, the magnesium hydroxide releases bound water when being heated and decomposed, absorbs a large amount of latent heat to reduce the surface temperature of the synthetic material filled with the magnesium hydroxide in flame, has the functions of inhibiting the decomposition of polymers and cooling the generated combustible gas, can prevent the cable from burning due to the flame retardant, and can prevent the cable from being oxidized and aged due to the antioxidant when being used for a long time.
Specifically, the high-temperature resistant filling material is one or a mixture of more of ethylene propylene rubber, fluorine rubber, silicon rubber and chloroprene rubber according to any proportion.
Specifically, the flame retardant is one or more of an aluminum hydroxide flame retardant, a high heat-resistant boehmite flame retardant and a magnesium hydroxide flame retardant which are mixed according to any proportion.
Specifically, the antioxidant is one or more of a multi-element hindered phenol antioxidant and a phosphite antioxidant which are mixed according to any proportion.
A method of manufacturing a composite cable comprising the steps of:
the method comprises the following steps: taking 10 parts of high-temperature-resistant filler, 8 parts of magnesium hydroxide, 8 parts of flame retardant and 12 parts of antioxidant, and putting into a stirrer for mixing and stirring for 15-20min to obtain a spare fireproof spraying raw material;
step two: uniformly spraying the obtained fire-resistant spraying raw material in the step S1 on the cable core 1, baking the cable core 1 by a baking box, and cooling the cable core at normal temperature after baking is finished, wherein the baking time of the baking box is 10-20min, and the baking temperature is 30-45 ℃;
step three: and (5) sleeving a layer of insulating layer 3 on the periphery of the fire-resistant layer 2 in the S2, sleeving a layer of wrapping tape 4 on the periphery of the insulating layer 3, and sleeving a layer of sheath 5 on the periphery of the wrapping tape 4 to obtain the finished cable.
Example 4:
the utility model provides a composite cable, includes cable core 1, and the parcel has coaxial flame retardant coating 2, insulating layer 3, band 4 and sheath 5 in order on the outer wall of cable core 1, and flame retardant coating 2 contains following component by mass: 18 parts of high-temperature resistant filler, 14 parts of magnesium hydroxide, 18 parts of flame retardant and 28 parts of antioxidant, wherein the insulating layer 3 is an ethylene propylene rubber layer, the wrapping belt 4 is a ceramic fiber layer, the sheath 5 is a low-halogen low-smoke flame-retardant polyolefin layer, the ethylene propylene rubber layer is synthetic rubber taking ethylene and propylene as main monomers, and has good insulating effect and the characteristics of ageing resistance and corrosion resistance when in use, the ceramic fiber is a fibrous light refractory material and has the characteristics of light weight and good thermal stability, the weight of the cable can be reduced, the stability of the cable is ensured, the low-halogen low-smoke flame-retardant polyolefin can bear the high temperature of 125 ℃ when in use, the cable can be prevented from being damaged by high temperature when being outdoors, the service life of the cable is prolonged, and the high-temperature resistant filler in the flame-retardant layer 2 can enhance the high-temperature resistant effect when the cable is in use, the magnesium hydroxide releases bound water when being heated and decomposed, absorbs a large amount of latent heat to reduce the surface temperature of the synthetic material filled with the magnesium hydroxide in flame, has the functions of inhibiting the decomposition of polymers and cooling the generated combustible gas, can prevent the cable from burning due to the flame retardant, and can prevent the cable from being oxidized and aged due to the antioxidant when being used for a long time.
Specifically, the high-temperature resistant filling material is one or a mixture of more of ethylene propylene rubber, fluorine rubber, silicon rubber and chloroprene rubber according to any proportion.
Specifically, the flame retardant is one or more of an aluminum hydroxide flame retardant, a high heat-resistant boehmite flame retardant and a magnesium hydroxide flame retardant which are mixed according to any proportion.
Specifically, the antioxidant is one or more of a multi-element hindered phenol antioxidant and a phosphite antioxidant which are mixed according to any proportion.
A method of manufacturing a composite cable comprising the steps of:
the method comprises the following steps: taking 18 parts of high-temperature resistant filler, 14 parts of magnesium hydroxide, 18 parts of flame retardant and 28 parts of antioxidant, and putting into a stirrer for mixing and stirring for 15-20min to obtain a spare fireproof spraying raw material;
step two: uniformly spraying the obtained fire-resistant spraying raw material in the step S1 on the cable core 1, baking the cable core 1 by a baking box, and cooling the cable core at normal temperature after baking is finished, wherein the baking time of the baking box is 10-20min, and the baking temperature is 30-45 ℃;
step three: and (5) sleeving a layer of insulating layer 3 on the periphery of the fire-resistant layer 2 in the S2, sleeving a layer of wrapping tape 4 on the periphery of the insulating layer 3, and sleeving a layer of sheath 5 on the periphery of the wrapping tape 4 to obtain the finished cable.
Example 5:
the utility model provides a composite cable, includes cable core 1, and the parcel has coaxial flame retardant coating 2, insulating layer 3, band 4 and sheath 5 in order on the outer wall of cable core 1, and flame retardant coating 2 contains following component by mass: 12 parts of high-temperature resistant filling material, 10 parts of magnesium hydroxide, 10 parts of flame retardant and 14 parts of antioxidant, wherein the insulating layer 3 is an ethylene propylene rubber layer, the wrapping belt 4 is a ceramic fiber layer, the sheath 5 is a low-halogen low-smoke flame-retardant polyolefin layer, the ethylene propylene rubber layer is synthetic rubber taking ethylene and propylene as main monomers, and has good insulating effect and the characteristics of ageing resistance and corrosion resistance when in use, the ceramic fiber is a fibrous light refractory material and has the characteristics of light weight and good thermal stability, the weight of the cable can be reduced, the stability of the cable is ensured, the low-halogen low-smoke flame-retardant polyolefin can bear the high temperature of 125 ℃ when in use, the cable can be prevented from being damaged by high temperature when being outdoors, the service life of the cable is prolonged, and the high-temperature resistant filling material in the flame-retardant layer 2 can enhance the high-temperature resistant effect when the cable is used, the magnesium hydroxide releases bound water when being heated and decomposed, absorbs a large amount of latent heat to reduce the surface temperature of the synthetic material filled with the magnesium hydroxide in flame, has the functions of inhibiting the decomposition of polymers and cooling the generated combustible gas, can prevent the cable from burning due to the flame retardant, and can prevent the cable from being oxidized and aged due to the antioxidant when being used for a long time.
Specifically, the high-temperature resistant filling material is one or a mixture of more of ethylene propylene rubber, fluorine rubber, silicon rubber and chloroprene rubber according to any proportion.
Specifically, the flame retardant is one or more of an aluminum hydroxide flame retardant, a high heat-resistant boehmite flame retardant and a magnesium hydroxide flame retardant which are mixed according to any proportion.
Specifically, the antioxidant is one or more of a multi-element hindered phenol antioxidant and a phosphite antioxidant which are mixed according to any proportion.
A method of manufacturing a composite cable comprising the steps of:
the method comprises the following steps: taking 12 parts of high-temperature resistant filler, 10 parts of magnesium hydroxide, 10 parts of flame retardant and 14 parts of antioxidant, and putting into a stirrer for mixing and stirring for 15-20min to obtain a spare fireproof spraying raw material;
step two: uniformly spraying the obtained fire-resistant spraying raw material in the step S1 on the cable core 1, baking the cable core 1 by a baking box, and cooling the cable core at normal temperature after baking is finished, wherein the baking time of the baking box is 10-20min, and the baking temperature is 30-45 ℃;
step three: and (5) sleeving a layer of insulating layer 3 on the periphery of the fire-resistant layer 2 in the S2, sleeving a layer of wrapping tape 4 on the periphery of the insulating layer 3, and sleeving a layer of sheath 5 on the periphery of the wrapping tape 4 to obtain the finished cable. Example 6:
the utility model provides a composite cable, includes cable core 1, and the parcel has coaxial flame retardant coating 2, insulating layer 3, band 4 and sheath 5 in order on the outer wall of cable core 1, and flame retardant coating 2 contains following component by mass: 16 parts of high-temperature resistant filling material, 12 parts of magnesium hydroxide, 16 parts of flame retardant and 26 parts of antioxidant, wherein the insulating layer 3 is an ethylene propylene rubber layer, the wrapping belt 4 is a ceramic fiber layer, the sheath 5 is a low-halogen low-smoke flame-retardant polyolefin layer, the ethylene propylene rubber layer is synthetic rubber taking ethylene and propylene as main monomers, and has good insulating effect and the characteristics of ageing resistance and corrosion resistance when in use, the ceramic fiber is a fibrous light refractory material and has the characteristics of light weight and good thermal stability, the weight of the cable can be reduced, the stability of the cable is ensured, the low-halogen low-smoke flame-retardant polyolefin can bear the high temperature of 125 ℃ when in use, the cable can be prevented from being damaged by high temperature when being outdoors, the service life of the cable is prolonged, and the high-temperature resistant filling material in the flame-retardant layer 2 can enhance the high-temperature resistant effect when the cable is used, the magnesium hydroxide releases bound water when being heated and decomposed, absorbs a large amount of latent heat to reduce the surface temperature of the synthetic material filled with the magnesium hydroxide in flame, has the functions of inhibiting the decomposition of polymers and cooling the generated combustible gas, can prevent the cable from burning due to the flame retardant, and can prevent the cable from being oxidized and aged due to the antioxidant when being used for a long time.
Specifically, the high-temperature resistant filling material is one or a mixture of more of ethylene propylene rubber, fluorine rubber, silicon rubber and chloroprene rubber according to any proportion.
Specifically, the flame retardant is one or more of an aluminum hydroxide flame retardant, a high heat-resistant boehmite flame retardant and a magnesium hydroxide flame retardant which are mixed according to any proportion.
Specifically, the antioxidant is one or more of a multi-element hindered phenol antioxidant and a phosphite antioxidant which are mixed according to any proportion.
A method of manufacturing a composite cable comprising the steps of:
the method comprises the following steps: taking 16 parts of high-temperature resistant filler, 12 parts of magnesium hydroxide, 16 parts of flame retardant and 26 parts of antioxidant, and putting into a stirrer for mixing and stirring for 15-20min to obtain a spare fireproof spraying raw material;
step two: uniformly spraying the obtained fire-resistant spraying raw material in the step S1 on the cable core 1, baking the cable core 1 by a baking box, and cooling the cable core at normal temperature after baking is finished, wherein the baking time of the baking box is 10-20min, and the baking temperature is 30-45 ℃;
step three: and (5) sleeving a layer of insulating layer 3 on the periphery of the fire-resistant layer 2 in the S2, sleeving a layer of wrapping tape 4 on the periphery of the insulating layer 3, and sleeving a layer of sheath 5 on the periphery of the wrapping tape 4 to obtain the finished cable.
Example 7:
the utility model provides a composite cable, includes cable core 1, and the parcel has coaxial flame retardant coating 2, insulating layer 3, band 4 and sheath 5 in order on the outer wall of cable core 1, and flame retardant coating 2 contains following component by mass: 14 parts of high-temperature resistant filling material, 11 parts of magnesium hydroxide, 13 parts of flame retardant and 20 parts of antioxidant, wherein the insulating layer 3 is an ethylene propylene rubber layer, the wrapping belt 4 is a ceramic fiber layer, the sheath 5 is a low-halogen low-smoke flame-retardant polyolefin layer, the ethylene propylene rubber layer is synthetic rubber taking ethylene and propylene as main monomers, and has good insulating effect and the characteristics of ageing resistance and corrosion resistance when in use, the ceramic fiber is a fibrous light refractory material and has the characteristics of light weight and good thermal stability, the weight of the cable can be reduced, the stability of the cable is ensured, the low-halogen low-smoke flame-retardant polyolefin can bear the high temperature of 125 ℃ when in use, the cable can be prevented from being damaged by high temperature when being outdoors, the service life of the cable is prolonged, and the high-temperature resistant filling material in the flame-retardant layer 2 can enhance the high-temperature resistant effect when the cable is used, the magnesium hydroxide releases bound water when being heated and decomposed, absorbs a large amount of latent heat to reduce the surface temperature of the synthetic material filled with the magnesium hydroxide in flame, has the functions of inhibiting the decomposition of polymers and cooling the generated combustible gas, can prevent the cable from burning due to the flame retardant, and can prevent the cable from being oxidized and aged due to the antioxidant when being used for a long time.
Specifically, the high-temperature resistant filling material is one or a mixture of more of ethylene propylene rubber, fluorine rubber, silicon rubber and chloroprene rubber according to any proportion.
Specifically, the flame retardant is one or more of an aluminum hydroxide flame retardant, a high heat-resistant boehmite flame retardant and a magnesium hydroxide flame retardant which are mixed according to any proportion.
Specifically, the antioxidant is one or more of a multi-element hindered phenol antioxidant and a phosphite antioxidant which are mixed according to any proportion.
A method of manufacturing a composite cable comprising the steps of:
the method comprises the following steps: taking 14 parts of high-temperature resistant filler, 11 parts of magnesium hydroxide, 13 parts of flame retardant and 20 parts of antioxidant, and putting into a stirrer for mixing and stirring for 15-20min to obtain a spare fireproof spraying raw material;
step two: uniformly spraying the obtained fire-resistant spraying raw material in the step S1 on the cable core 1, baking the cable core 1 by a baking box, and cooling the cable core at normal temperature after baking is finished, wherein the baking time of the baking box is 10-20min, and the baking temperature is 30-45 ℃;
step three: and (5) sleeving a layer of insulating layer 3 on the periphery of the fire-resistant layer 2 in the S2, sleeving a layer of wrapping tape 4 on the periphery of the insulating layer 3, and sleeving a layer of sheath 5 on the periphery of the wrapping tape 4 to obtain the finished cable.
Examples 1, 2, 3, 4, 5, 6 and 7 differ in the content of the components therein, and the preparation methods thereof are the same.
To further illustrate the beneficial effects of the present invention, the inventors selected two composite cables, selected the name of flexible data cable, the model of LIYY, briefly described below as the first composite cable, selected the name of mineral cable, the model of BTTZ, briefly described below as the second composite cable, and selected the composite cable made by the present invention, compared the high temperature resistance, flame retardancy, and irradiation temperature, and obtained the following data, detailed in table 1:
TABLE 1 Experimental data sheet
| Resistance to high temperature conditions | Flame retardant condition | Time of irradiation temperature | |
| First composite cable | Melting in large quantities | Complete combustion | 110°C |
| Second composite cable | Completely melt | Complete combustion | 110°C |
| Example 1 | Not melted | Not burnt | 110°C |
| Example 2 | Not melted | Not burnt | 110°C |
| Example 3 | Not melted | Not burnt | 110°C |
| Example 4 | Not melted | Not burnt | 110°C |
| Example 5 | Not melted | Not burnt | 110°C |
| Example 6 | Not melted | Not burnt | 110°C |
| Example 7 | Not melted | Not burnt | 110°C |
From the above experimental data, it can be seen that the composite cables of examples 1-7 are not melted or burnt during use under high temperature irradiation at 110 ℃, which indicates that the composite cables of examples 1-7 have high temperature resistance and flame retardant properties and can prolong the service life in the external high temperature environment.
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 equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.
Claims (9)
1. The composite cable is characterized by comprising a cable core (1), wherein the outer wall of the cable core (1) is sequentially wrapped with a coaxial flame retardant coating (2), an insulating layer (3), a wrapping tape (4) and a sheath (5);
the refractory layer (2) comprises the following components in parts by mass: 8-20 parts of high-temperature resistant filler, 6-16 parts of magnesium hydroxide, 6-20 parts of flame retardant and 10-30 parts of antioxidant;
the insulating layer (3) is an ethylene propylene rubber layer;
the wrapping tape (4) is a ceramic fiber layer;
the sheath (5) is a low-halogen low-smoke flame-retardant polyolefin layer.
2. The composite cable according to claim 1, wherein the flame-retardant layer (2) comprises the following components in parts by mass: 10-18 parts of high-temperature resistant filler, 8-14 parts of magnesium hydroxide, 8-18 parts of flame retardant and 12-28 parts of antioxidant.
3. A composite cable according to claim 2, characterized in that the flame-retardant layer (2) comprises the following components in parts by mass: 12-16 parts of high-temperature resistant filler, 10-12 parts of magnesium hydroxide, 10-16 parts of flame retardant and 14-26 parts of antioxidant.
4. A composite cable according to claim 3, characterized in that the flame-retardant layer (2) comprises the following components in parts by mass: 14 parts of high-temperature resistant filler, 11 parts of magnesium hydroxide, 13 parts of flame retardant and 20 parts of antioxidant.
5. A composite cable according to any one of claims 1 to 4, wherein the high temperature resistant filler is one or more of a vinyl, a fluoro, a silicone and a neoprene mixed in any proportion.
6. A composite cable according to any one of claims 1 to 4, wherein the flame retardant is one or more of an aluminum hydroxide flame retardant, a high heat resistant boehmite flame retardant, a magnesium hydroxide flame retardant mixed in any proportion.
7. The composite cable according to any one of claims 1 to 4, wherein the antioxidant is one or more of a multi-component hindered phenol antioxidant and a phosphite antioxidant mixed in any proportion.
8. A method of manufacturing a composite cable, comprising the steps of:
s1: taking 8-20 parts of high-temperature resistant filler, 6-16 parts of magnesium hydroxide, 6-20 parts of flame retardant and 10-30 parts of antioxidant, and putting into a stirrer for mixing and stirring for 15-20min to obtain a spare fireproof spraying raw material;
s2: uniformly spraying the obtained fire-resistant spraying raw material in the step S1 on the cable core 1, baking the cable core 1 through a baking box, and cooling the cable core at normal temperature after baking is finished;
s3: and (3) sleeving an insulating layer (3) on the periphery of the fire-resistant layer (2) in the S2, sleeving a wrapping tape (4) on the periphery of the insulating layer (3), and sleeving a sheath (5) on the periphery of the wrapping tape (4) to obtain the finished cable.
9. A method of manufacturing a composite cable according to claim 8, comprising the steps of: according to the operation steps in S2, the baking time of the baking oven is 10-20min, and the baking temperature is 30-45 ℃.
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| CN202010647948.1A CN112309626A (en) | 2020-07-07 | 2020-07-07 | Composite cable and manufacturing method thereof |
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| CN202010647948.1A CN112309626A (en) | 2020-07-07 | 2020-07-07 | Composite cable and manufacturing method thereof |
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| CN104217799A (en) * | 2014-08-27 | 2014-12-17 | 南京创贝高速传动机械有限公司 | Flexible composite cable and preparation method thereof |
| CN105185437A (en) * | 2015-09-28 | 2015-12-23 | 张翔 | Nano-material composite flame-retardant cable and preparation method thereof |
| CN105810334A (en) * | 2014-12-31 | 2016-07-27 | 安徽联嘉祥特种电缆有限公司 | Nano smoke-suppressant flame-retardant cable and manufacturing method thereof |
| CN105957592A (en) * | 2016-06-30 | 2016-09-21 | 安徽埃克森科技集团有限公司 | Oil-proof cable and preparation method thereof |
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| CN104217799A (en) * | 2014-08-27 | 2014-12-17 | 南京创贝高速传动机械有限公司 | Flexible composite cable and preparation method thereof |
| CN105810334A (en) * | 2014-12-31 | 2016-07-27 | 安徽联嘉祥特种电缆有限公司 | Nano smoke-suppressant flame-retardant cable and manufacturing method thereof |
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Application publication date: 20210202 |