CN114678169A - Flame-retardant wear-resistant cable and preparation method thereof - Google Patents
Flame-retardant wear-resistant cable and preparation method thereof Download PDFInfo
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- CN114678169A CN114678169A CN202210372250.2A CN202210372250A CN114678169A CN 114678169 A CN114678169 A CN 114678169A CN 202210372250 A CN202210372250 A CN 202210372250A CN 114678169 A CN114678169 A CN 114678169A
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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
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
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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
- H01B13/221—Sheathing; Armouring; Screening; Applying other protective layers filling-up interstices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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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
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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
- H01B7/1835—Sheaths comprising abrasive charges
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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
- H01B7/185—Sheaths comprising internal cavities or channels
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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
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
- H01B7/328—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising violation sensing means
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Abstract
The invention discloses a flame-retardant wear-resistant cable, which comprises: cable core and fire-retardant wear-resisting cover, fire-retardant wear-resisting cover is including setting up the insulating layer outside the cable core, the enhancement layer of parcel outside the aerogel insulating layer, and the restrictive coating of parcel outside the enhancement layer is formed with fire-retardant chamber between restrictive coating and the enhancement layer, and fire-retardant intracavity is filled there is the fire retardant. According to the cable core, the flame-retardant wear-resistant sleeve is arranged outside the cable core, the flame-retardant wear-resistant sleeve is composed of the sheath layer, the wear-resistant layer and the reinforcing layer, a wear-resistant cavity formed between the wear-resistant layer and the sheath layer can play a wear-resistant effect, meanwhile, high-ignition-point quick-drying glue filled in the wear-resistant cavity can repair the damaged part after the wear-resistant layer is damaged, and the repaired damaged part is white and is convenient to observe; the flame retardant is filled in the flame-retardant cavity, so that the flame-retardant effect can be achieved, the internal damage of the cable is avoided, and the service life is prolonged; the quick-drying adhesive filled in the wear-resistant layer and the flame retardant filled in the flame-retardant cavity also improve the anti-interference effect of the cable.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a flame-retardant wear-resistant cable and a preparation method thereof.
Background
Cables are typically formed by twisting several or groups of at least two conductors, each group insulated from each other and often twisted around a center, with a highly insulating covering over the entire circumference. The cable has the characteristics of internal electrification and external insulation. The flame-retardant cable is a cable which is characterized in that a test sample is burnt under specified test conditions, the flame spread is only within a limited range after a test fire source is removed, and residual flame or burn can be automatically extinguished within a limited time. The basic characteristics are as follows: in the case of a fire, may burn out and fail to operate, but may prevent the spread of the fire. In common, in case of fire, the electric wire can limit the combustion within a local range, does not spread, keeps other various equipment and avoids causing larger loss.
At present, the existing cable is poor in flame-retardant and wear-resistant effects, the surface of the cable is easy to damage in the using process, and the wear-resistant and flame-retardant effects of the cable are reduced. For this reason, a new scheme needs to be designed to give improvements.
Disclosure of Invention
The invention aims to provide a flame-retardant wear-resistant cable and a preparation method thereof, which solve the problems that the conventional cable is poor in flame-retardant and wear-resistant effects, the surface of the cable is easy to damage in the using process, and the wear-resistant and flame-retardant effects of the cable are reduced, and meet the actual use requirements.
In order to achieve the purpose, the invention provides the following technical scheme: a flame retardant, abrasion resistant cable comprising: the cable comprises a cable core and a flame-retardant wear-resistant sleeve, wherein the flame-retardant wear-resistant sleeve comprises an insulating layer arranged outside the cable core, a reinforcing layer wrapped outside an aerogel insulating layer, and a sheath layer wrapped outside the reinforcing layer, a flame-retardant cavity is formed between the sheath layer and the reinforcing layer, a flame retardant is filled in the flame-retardant cavity, ten wear-resistant layers distributed in an annular shape are uniformly arranged on the outer wall of the sheath layer, the wear-resistant layers are of arc structures, a wear-resistant cavity is formed between the interior of each wear-resistant layer and the sheath layer, and high-ignition-point quick-drying adhesive is filled in the wear-resistant cavity;
the flame-retardant wear-resistant sleeve comprises the following components: 40-50 parts of nitrile rubber, 34-45 parts of ethylene propylene rubber, 6-8 parts of an electrostatic agent, 10-15 parts of calcined clay, 4-5 parts of paraffin, 0.5-1 part of zinc stearate, 1-2 parts of a vulcanizing agent, 2-4 parts of carbon black and 1-2 parts of an accelerator;
the flame retardant comprises the following components: 30-50 parts of a medium-process polyester resin, 11-13 parts of magnesium hydroxide, 4-15 parts of a curing agent, 1-4 parts of a flatting agent, 1-3 parts of benzoin, 4-8 parts of titanium dioxide, 3-8 parts of ceramic powder, 5-8 parts of silicon carbide, 1-4 parts of sodium bicarbonate, 3-8 parts of reinforcing fiber yarns and 1-2 parts of precipitated barium sulfate.
As a preferred embodiment of the present invention, the method comprises the following steps:
s1: preparation of flame retardant
Mixing the medium-process polyester resin, magnesium hydroxide, benzoin, titanium dioxide, ceramic powder, silicon carbide and sodium bicarbonate, putting the mixture into a stirrer for stirring, controlling the reaction time to be 2-2.5 h, controlling the temperature to be 70-90 ℃, controlling the stirring speed to be 1400r/min, dripping a leveling agent under the stirring condition, refluxing for 2h at the temperature of 70-90 ℃, adjusting the temperature to be 120-140 ℃, adding a catalyst, reacting for 0.5-1 h, adding strong fiber filaments and precipitated barium sulfate, stirring at a constant speed, stirring, heating to 150 ℃, reacting for 1h, adding a curing agent, stirring a flame retardant for 1-1.5 h, and cooling to 50 ℃ to obtain the flame retardant;
s2: raw material solution for preparing flame-retardant wear-resistant sleeve
Adding nitrile rubber and ethylene propylene rubber into a mixing stirrer, heating at a heating rate of 5 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding an electrostatic agent, calcined argil, paraffin and zinc stearate into the stirrer, stirring while adding, heating at a heating rate of 2 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding a vulcanizing agent, carbon black and an accelerator into the stirrer, heating at a heating rate of every 1 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 90 ℃, and keeping for 1-2 hours to prepare the flame-retardant wear-resistant sleeve raw material solution;
s3: manufacturing of flame-retardant and wear-resistant cable
Adding the raw material solution obtained in the S2 into a coating machine, extruding and coating the raw material solution in a cable core to form an insulating layer, sleeving a reinforcement of a reinforcing layer outside the insulating layer, extruding a sheath layer to be sleeved outside the reinforcing layer, forming a flame-retardant cavity between the reinforcing layer and the sheath layer, extruding and coating a wear-resistant layer outside the sheath layer, forming a wear-resistant cavity between the wear-resistant layer and the sheath layer, injecting a flame retardant into the flame-retardant cavity and sealing the flame-retardant cavity in a staged manner, and injecting high-ignition-point fast dry glue into the wear-resistant cavity and sealing the flame-retardant cavity in a staged manner to obtain the wear-resistant cable.
In a preferred embodiment of the present invention, the reinforcing fiber yarn is less than 2cm in length, and the reinforcing fiber yarn is one of glass fiber, asbestos fiber, and ceramic fiber.
In a preferred embodiment of the present invention, the reinforcing members are made of TPU material, and are arranged in three and distributed annularly, and the three reinforcing members are bonded by glue.
Compared with the prior art, the invention has the following beneficial effects:
according to the cable core, the flame-retardant wear-resistant sleeve is arranged outside the cable core, the flame-retardant wear-resistant sleeve is composed of the sheath layer, the wear-resistant layer and the reinforcing layer, a wear-resistant cavity formed between the wear-resistant layer and the sheath layer can play a wear-resistant effect, meanwhile, high-ignition-point quick-drying glue filled in the wear-resistant cavity can repair the damaged part after the wear-resistant layer is damaged, and the repaired damaged part is white and is convenient to observe; the flame retardant is filled in the flame-retardant cavity, so that the flame-retardant effect can be achieved, the internal damage of the cable is avoided, and the service life is prolonged; the quick-drying adhesive filled in the wear-resistant layer and the flame retardant filled in the flame-retardant cavity also improve the anti-interference effect of the cable.
Drawings
Fig. 1 is a structural diagram of the flame-retardant and wear-resistant cable according to the invention.
In the figure, 1, a sheath layer; 2. a wear layer; 3. a wear resistant cavity; 4. a cable core; 5. a flame retardant cavity; 6. and a reinforcing layer.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, the present invention provides a technical solution: a flame retardant, abrasion resistant cable comprising: the cable comprises a cable core 4 and a flame-retardant wear-resistant sleeve, wherein the flame-retardant wear-resistant sleeve comprises an insulating layer arranged outside the cable core 4, a reinforcing layer 6 wrapped outside an aerogel insulating layer, a sheath layer 1 wrapped outside the reinforcing layer 6, a flame-retardant cavity 5 formed between the sheath layer 1 and the reinforcing layer 6, a flame retardant is filled in the flame-retardant cavity 5, ten wear-resistant layers 2 distributed annularly are uniformly arranged on the outer wall of the sheath layer 1, each wear-resistant layer 2 is of an arc-shaped structure, a wear-resistant cavity 3 is formed between the inner part of each wear-resistant layer 2 and the sheath layer 1, and high-ignition-point quick-drying glue is filled in the wear-resistant cavity 3;
the flame-retardant wear-resistant sleeve comprises the following components: 30 parts of nitrile rubber, 40 parts of ethylene propylene rubber, 7 parts of electrostatic agent, 12 parts of calcined clay, 4 parts of paraffin, 0.5 part of zinc stearate, 1.5 parts of vulcanizing agent, 2 parts of carbon black and 1.5 parts of accelerator;
the flame retardant comprises the following components: 40 parts of medium-process polyester resin, 12 parts of magnesium hydroxide, 10 parts of curing agent, 3 parts of flatting agent, 2 parts of benzoin, 6 parts of titanium dioxide, 6 parts of ceramic powder, 6 parts of silicon carbide, 3 parts of sodium bicarbonate, 6 parts of reinforcing fiber yarn and 1 part of precipitated barium sulfate.
Further improved, the method comprises the following steps:
s1: preparation of flame retardant
Mixing the medium-method polyester resin, magnesium hydroxide, benzoin, titanium dioxide, ceramic powder, silicon carbide and sodium bicarbonate, putting the mixture into a stirrer for stirring, controlling the reaction time to be 2 hours, controlling the temperature to be 80 ℃, controlling the stirring speed to be 1400r/min, dripping a leveling agent under the stirring condition, refluxing for 2 hours at 80 ℃, adjusting the temperature to 130 ℃, adding a catalyst, carrying out reaction for 0.8 hour, adding strong fiber filaments and precipitated barium sulfate, stirring at a constant speed, stirring, heating to 150 ℃, reacting for 1 hour, adding a curing agent, stirring for 1-hour, and cooling to 50 ℃, thus obtaining the flame retardant;
s2: raw material solution for preparing flame-retardant wear-resistant sleeve
Adding nitrile rubber and ethylene propylene rubber into a mixing stirrer, heating at a heating rate of 5 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding an electrostatic agent, calcined argil, paraffin and zinc stearate into the stirrer, stirring while adding, then heating at a heating rate of 2 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding a vulcanizing agent, carbon black and an accelerator into the stirrer, heating at a heating rate of every 1 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 90 ℃, and keeping for 1-2 hours to prepare a flame-retardant wear-resistant sleeve raw material solution;
s3: manufacturing of flame-retardant and wear-resistant cable
Adding the raw material solution obtained in the S2 into a coating machine, extruding and coating the raw material solution in a cable core 4 to form an insulating layer, sleeving a reinforcing piece of a reinforcing layer 6 outside the insulating layer, extruding a sheath layer 1 and sleeving the reinforcing layer 6, forming a flame-retardant cavity 5 between the reinforcing layer 6 and the sheath layer 1, extruding a coated wear-resistant layer 2 outside the sheath layer 1, forming a wear-resistant cavity 3 between the wear-resistant layer 2 and the sheath layer 1, injecting a flame retardant into the flame-retardant cavity 5 and sealing in stages, injecting high-ignition-point fast dry glue into the wear-resistant cavity 3 and sealing in stages to obtain the wear-resistant cable.
In a further improvement, the reinforcing fiber yarns are less than 2cm in length, and the reinforcing fiber yarns are glass fibers.
In a further improvement, the reinforcing parts are made of TPU materials, three reinforcing parts are arranged and distributed in an annular shape, and the three reinforcing parts are bonded by glue.
The wear-resistant cavity 3 formed between the wear-resistant layer 2 and the sheath layer 1 can play a role in wear resistance, meanwhile, the high-ignition point quick-drying adhesive filled in the wear-resistant cavity 3 can repair the damaged part after the wear-resistant layer 2 is damaged, and the repaired damaged part is white and is convenient to observe; the flame retardant is filled in the flame-retardant cavity 5, so that the flame-retardant effect can be achieved, the internal damage of the cable is avoided, and the service life is prolonged; the quick-drying rubber filled in the wear-resistant layer 2 and the flame retardant filled in the flame-retardant cavity 5 also improve the anti-interference effect of the cable.
Example two
A flame retardant, abrasion resistant cable comprising: the cable comprises a cable core 4 and a flame-retardant wear-resistant sleeve, wherein the flame-retardant wear-resistant sleeve comprises an insulating layer arranged outside the cable core 4, a reinforcing layer 6 wrapped outside an aerogel insulating layer, a sheath layer 1 wrapped outside the reinforcing layer 6, a flame-retardant cavity 5 formed between the sheath layer 1 and the reinforcing layer 6, a flame retardant is filled in the flame-retardant cavity 5, ten wear-resistant layers 2 distributed annularly are uniformly arranged on the outer wall of the sheath layer 1, each wear-resistant layer 2 is of an arc-shaped structure, a wear-resistant cavity 3 is formed between the inner part of each wear-resistant layer 2 and the sheath layer 1, and high-ignition-point quick-drying glue is filled in the wear-resistant cavity 3;
the flame-retardant wear-resistant sleeve comprises the following components: 40 parts of nitrile rubber, 34 parts of ethylene propylene rubber, 6 parts of electrostatic agent, 10 parts of calcined clay, 4 parts of paraffin, 0.5 part of zinc stearate, 1 part of vulcanizing agent, 2 parts of carbon black and 1 part of accelerator;
the flame retardant comprises the following components: 30 parts of medium-process polyester resin, 11 parts of magnesium hydroxide, 4 parts of curing agent, 1 part of flatting agent, 1 part of benzoin, 4 parts of titanium dioxide, 3 parts of ceramic powder, 5 parts of silicon carbide, 1 part of sodium bicarbonate, 3 parts of reinforcing fiber yarn and 1 part of precipitated barium sulfate.
Further improved, the method comprises the following steps:
s1: preparation of flame retardant
Mixing the medium-method polyester resin, magnesium hydroxide, benzoin, titanium dioxide, ceramic powder, silicon carbide and sodium bicarbonate, putting the mixture into a stirrer for stirring, controlling the reaction time to be 2 hours, controlling the temperature to be 70 ℃, controlling the stirring speed to be 1400r/min, dripping a leveling agent under the stirring condition, refluxing for 2 hours at 70 ℃, adjusting the temperature to be 120 ℃, adding a catalyst, carrying out reaction for 0.5 hour, adding strong fiber filaments and precipitated barium sulfate, stirring at a constant speed, stirring, heating to 150 ℃, reacting for 1 hour, adding a curing agent, stirring for 1-hour, and cooling to 50 ℃, thus obtaining the flame retardant;
s2: raw material solution for preparing flame-retardant wear-resistant sleeve
Adding nitrile rubber and ethylene propylene rubber into a mixing stirrer, heating at a heating rate of 5 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding an electrostatic agent, calcined argil, paraffin and zinc stearate into the stirrer, stirring while adding, then heating at a heating rate of 2 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding a vulcanizing agent, carbon black and an accelerator into the stirrer, heating at a heating rate of every 1 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 90 ℃, and keeping for 1h to prepare a flame-retardant wear-resistant sleeve raw material solution;
s3: manufacturing of flame-retardant and wear-resistant cable
Adding the raw material solution obtained in the S2 into a coating machine, extruding and coating the raw material solution in a cable core 4 to form an insulating layer, sleeving a reinforcing piece of a reinforcing layer 6 outside the insulating layer, extruding a sheath layer 1 and sleeving the reinforcing layer 6, forming a flame-retardant cavity 5 between the reinforcing layer 6 and the sheath layer 1, extruding a coated wear-resistant layer 2 outside the sheath layer 1, forming a wear-resistant cavity 3 between the wear-resistant layer 2 and the sheath layer 1, injecting a flame retardant into the flame-retardant cavity 5 and sealing in stages, injecting high-ignition-point fast dry glue into the wear-resistant cavity 3 and sealing in stages to obtain the wear-resistant cable.
In a further improvement, the reinforcing fiber filaments are less than 2cm in length, and the reinforcing fiber filaments are asbestos fibers.
In a further improvement, the reinforcing parts are made of TPU materials, three reinforcing parts are arranged and distributed in an annular shape, and the three reinforcing parts are bonded by glue.
A wear-resistant cavity 3 formed between the wear-resistant layer 2 and the sheath layer 1 can play a wear-resistant role, meanwhile, high-ignition point quick-drying glue filled in the wear-resistant cavity 3 can repair the damaged part after the wear-resistant layer 2 is damaged, and the repaired damaged part is white and is convenient to observe; the flame retardant is filled in the flame-retardant cavity 5, so that the flame-retardant effect can be achieved, the internal damage of the cable is avoided, and the service life is prolonged; the quick-drying rubber filled in the wear-resistant layer 2 and the flame retardant filled in the flame-retardant cavity 5 also improve the anti-interference effect of the cable.
EXAMPLE III
A flame retardant, abrasion resistant cable comprising: the cable comprises a cable core 4 and a flame-retardant wear-resistant sleeve, wherein the flame-retardant wear-resistant sleeve comprises an insulating layer arranged outside the cable core 4, a reinforcing layer 6 wrapped outside an aerogel insulating layer, a sheath layer 1 wrapped outside the reinforcing layer 6, a flame-retardant cavity 5 formed between the sheath layer 1 and the reinforcing layer 6, a flame retardant is filled in the flame-retardant cavity 5, ten wear-resistant layers 2 distributed annularly are uniformly arranged on the outer wall of the sheath layer 1, each wear-resistant layer 2 is of an arc-shaped structure, a wear-resistant cavity 3 is formed between the inner part of each wear-resistant layer 2 and the sheath layer 1, and high-ignition-point quick-drying glue is filled in the wear-resistant cavity 3;
the flame-retardant wear-resistant sleeve comprises the following components: 50 parts of nitrile rubber, 45 parts of ethylene propylene rubber, 8 parts of electrostatic agent, 15 parts of calcined clay, 5 parts of paraffin, 1 part of zinc stearate, 2 parts of vulcanizing agent, 4 parts of carbon black and 2 parts of accelerator;
the flame retardant comprises the following components: 50 parts of medium-process polyester resin, 13 parts of magnesium hydroxide, 15 parts of curing agent, 4 parts of flatting agent, 3 parts of benzoin, 8 parts of titanium dioxide, 8 parts of ceramic powder, 8 parts of silicon carbide, 4 parts of sodium bicarbonate, 8 parts of reinforcing fiber yarn and 2 parts of precipitated barium sulfate.
Further improved, the method comprises the following steps:
s1: preparation of flame retardant
Mixing the medium-method polyester resin, magnesium hydroxide, benzoin, titanium dioxide, ceramic powder, silicon carbide and sodium bicarbonate, putting the mixture into a stirrer for stirring, controlling the reaction time to be 2.5h, controlling the temperature to be 90 ℃, controlling the stirring speed to be 1400r/min, dripping a leveling agent under the stirring condition, refluxing for 2h at 90 ℃, adjusting the temperature to 140 ℃, adding a catalyst, carrying out reaction for 1h, adding strong fiber filaments and precipitated barium sulfate, stirring at a constant speed, stirring, heating to 150 ℃, reacting for 1h, adding a curing agent, stirring for 1.5h, and cooling to 50 ℃, thus obtaining the flame retardant;
s2: raw material solution for preparing flame-retardant wear-resistant sleeve
Adding nitrile rubber and ethylene propylene rubber into a mixing stirrer, heating at a heating rate of 5 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding an electrostatic agent, calcined argil, paraffin and zinc stearate into the stirrer, stirring while adding, heating at a heating rate of 2 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding a vulcanizing agent, carbon black and an accelerator into the stirrer, heating at a heating rate of every 1 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 90 ℃, and keeping for 2h to prepare the flame-retardant wear-resistant sleeve raw material solution;
s3: manufacturing of flame-retardant and wear-resistant cable
Adding the raw material solution obtained in the S2 into a coating machine, extruding and coating the raw material solution in a cable core 4 to form an insulating layer, sleeving a reinforcing piece of a reinforcing layer 6 outside the insulating layer, extruding a sheath layer 1 and sleeving the reinforcing layer 6, forming a flame-retardant cavity 5 between the reinforcing layer 6 and the sheath layer 1, extruding a coated wear-resistant layer 2 outside the sheath layer 1, forming a wear-resistant cavity 3 between the wear-resistant layer 2 and the sheath layer 1, injecting a flame retardant into the flame-retardant cavity 5 and sealing in stages, injecting high-ignition-point fast dry glue into the wear-resistant cavity 3 and sealing in stages to obtain the wear-resistant cable.
In a further improvement, the reinforcing fiber filament is less than 2cm in length, and the reinforcing fiber filament is one of ceramic fibers.
In a further improvement, the reinforcing parts are made of TPU materials, three reinforcing parts are arranged and distributed annularly, and the three reinforcing parts are bonded by glue.
The wear-resistant cavity 3 formed between the wear-resistant layer 2 and the sheath layer 1 can play a role in wear resistance, meanwhile, the high-ignition point quick-drying adhesive filled in the wear-resistant cavity 3 can repair the damaged part after the wear-resistant layer 2 is damaged, and the repaired damaged part is white and is convenient to observe; the flame retardant is filled in the flame-retardant cavity 5, so that the flame-retardant effect can be achieved, the internal damage of the cable is avoided, and the service life is prolonged; the quick-drying rubber filled in the wear-resistant layer 2 and the flame retardant filled in the flame-retardant cavity 5 also improve the anti-interference effect of the cable
Example four
A flame retardant, abrasion resistant cable comprising: the cable comprises a cable core 4 and a flame-retardant wear-resistant sleeve, wherein the flame-retardant wear-resistant sleeve comprises an insulating layer arranged outside the cable core 4, a reinforcing layer 6 wrapped outside an aerogel insulating layer, a sheath layer 1 wrapped outside the reinforcing layer 6, a flame-retardant cavity 5 formed between the sheath layer 1 and the reinforcing layer 6, a flame retardant is filled in the flame-retardant cavity 5, ten wear-resistant layers 2 distributed annularly are uniformly arranged on the outer wall of the sheath layer 1, each wear-resistant layer 2 is of an arc-shaped structure, a wear-resistant cavity 3 is formed between the inner part of each wear-resistant layer 2 and the sheath layer 1, and high-ignition-point quick-drying glue is filled in the wear-resistant cavity 3;
the flame-retardant wear-resistant sleeve comprises the following components: 30 parts of nitrile rubber, 40 parts of ethylene propylene rubber, 7 parts of electrostatic agent, 12 parts of calcined clay, 4 parts of paraffin, 0.5 part of zinc stearate, 1.5 parts of vulcanizing agent, 2 parts of carbon black and 1.5 parts of accelerator;
further improved, the method comprises the following steps:
s1: raw material solution for preparing flame-retardant wear-resistant sleeve
Adding nitrile rubber and ethylene propylene rubber into a mixing stirrer, heating at a heating rate of 5 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding an electrostatic agent, calcined argil, paraffin and zinc stearate into the stirrer, stirring while adding, heating at a heating rate of 2 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding a vulcanizing agent, carbon black and an accelerator into the stirrer, heating at a heating rate of every 1 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 90 ℃, and keeping for 1-2 hours to prepare the flame-retardant wear-resistant sleeve raw material solution;
s2: manufacturing of flame-retardant and wear-resistant cable
Adding the raw material solution obtained in the S1 into a coating machine, extruding and coating the raw material solution in a cable core 4 to form an insulating layer, sleeving a reinforcing piece of a reinforcing layer 6 outside the insulating layer, extruding a sheath layer 1 and sleeving the reinforcing layer 6, forming a flame-retardant cavity 5 between the reinforcing layer 6 and the sheath layer 1, extruding a coated wear-resistant layer 2 outside the sheath layer 1, forming a wear-resistant cavity 3 between the wear-resistant layer 2 and the sheath layer 1, injecting a flame retardant into the flame-retardant cavity 5 and sealing in stages, injecting high-ignition-point fast dry glue into the wear-resistant cavity 3 and sealing in stages to obtain the wear-resistant cable.
In a further improvement, the reinforcing fiber yarns are less than 2cm in length, and the reinforcing fiber yarns are glass fibers.
In a further improvement, the reinforcing parts are made of TPU materials, three reinforcing parts are arranged and distributed annularly, and the three reinforcing parts are bonded by glue.
Can only play a simple wear-resistant role, and has insufficient flame-retardant effect.
Taking the cables prepared in the first, second, third and fourth embodiments to perform wear resistance and flame retardance tests in a testing machine:
as can be seen from table 1, the tensile strength, elongation at break, vicat softening point and annual corrosion depth of the flame-retardant cable prepared according to the first, second and third formulations of the embodiment are all improved to a certain extent, which shows that the flame-retardant cable and the preparation method thereof of the invention enable the flame-retardant cable to have corrosion resistance while having flame-retardant performance, thereby improving the service life, reducing the use cost, improving certain mechanical properties of the cable, ensuring the bearing capacity and stability of the core body, and improving the use strength.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A flame retardant, abrasion resistant cable comprising: the cable comprises a cable core and a flame-retardant wear-resistant sleeve, wherein the flame-retardant wear-resistant sleeve comprises an insulating layer arranged outside the cable core, a reinforcing layer wrapped outside an aerogel insulating layer, and a sheath layer wrapped outside the reinforcing layer, a flame-retardant cavity is formed between the sheath layer and the reinforcing layer, a flame retardant is filled in the flame-retardant cavity, ten wear-resistant layers distributed in an annular shape are uniformly arranged on the outer wall of the sheath layer, the wear-resistant layers are of arc structures, a wear-resistant cavity is formed between the interior of each wear-resistant layer and the sheath layer, and high-ignition-point quick-drying adhesive is filled in the wear-resistant cavity;
the flame-retardant wear-resistant sleeve comprises the following components: 40-50 parts of nitrile rubber, 34-45 parts of ethylene propylene rubber, 6-8 parts of an electrostatic agent, 10-15 parts of calcined clay, 4-5 parts of paraffin, 0.5-1 part of zinc stearate, 1-2 parts of a vulcanizing agent, 2-4 parts of carbon black and 1-2 parts of an accelerator;
the flame retardant comprises the following components: 30-50 parts of a medium-process polyester resin, 11-13 parts of magnesium hydroxide, 4-15 parts of a curing agent, 1-4 parts of a flatting agent, 1-3 parts of benzoin, 4-8 parts of titanium dioxide, 3-8 parts of ceramic powder, 5-8 parts of silicon carbide, 1-4 parts of sodium bicarbonate, 3-8 parts of reinforcing fiber yarns and 1-2 parts of precipitated barium sulfate.
2. The method for preparing the flame-retardant and wear-resistant cable according to claim 1, wherein the method comprises the following steps: the method comprises the following steps:
s1: preparation of flame retardant
Mixing the medium-process polyester resin, magnesium hydroxide, benzoin, titanium dioxide, ceramic powder, silicon carbide and sodium bicarbonate, putting the mixture into a stirrer for stirring, controlling the reaction time to be 2-2.5 h, controlling the temperature to be 70-90 ℃, controlling the stirring speed to be 1400r/min, dripping a flatting agent under the stirring condition, refluxing for 2h at the temperature of 70-90 ℃, adjusting the temperature to be 120-140 ℃, adding a catalyst, reacting for 0.5-1 h, adding strong fiber filaments and precipitated barium sulfate, stirring, heating to 150 ℃ at a constant speed, reacting for 1h, adding a curing agent, stirring a flame retardant for 1-1.5 h, and cooling to 50 ℃ to obtain the flame retardant;
s2: raw material solution for preparing flame-retardant wear-resistant sleeve
Adding nitrile rubber and ethylene propylene rubber into a mixing stirrer, heating at a heating rate of 5 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding an electrostatic agent, calcined argil, paraffin and zinc stearate into the stirrer, stirring while adding, heating at a heating rate of 2 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 80 ℃, sequentially adding a vulcanizing agent, carbon black and an accelerator into the stirrer, heating at a heating rate of every 1 ℃/min, continuously stirring in the heating process, stopping heating when the temperature reaches 90 ℃, and keeping for 1-2 hours to prepare the flame-retardant wear-resistant sleeve raw material solution;
s3: manufacturing of flame-retardant and wear-resistant cable
Adding the raw material solution obtained in the S2 into a coating machine, extruding and coating the raw material solution in a cable core to form an insulating layer, sleeving a reinforcing piece of a reinforcing layer outside the insulating layer, extruding and sleeving a sheath layer outside the reinforcing layer, forming a flame-retardant cavity between the reinforcing layer and the sheath layer, extruding and coating a wear-resistant layer outside the sheath layer, forming a wear-resistant cavity between the wear-resistant layer and the sheath layer, injecting a flame retardant into the flame-retardant cavity and sealing the flame-retardant cavity in a staged manner, injecting high-ignition-point dry glue into the wear-resistant cavity and sealing the flame-retardant cavity in a staged manner, and thus obtaining the wear-resistant cable.
3. The flame-retardant wear-resistant cable and the preparation method thereof according to claim 2, wherein: the length of the reinforcing fiber yarn is less than 2cm, and the reinforcing fiber yarn is one of glass fiber, asbestos fiber and ceramic fiber.
4. The flame-retardant wear-resistant cable and the preparation method thereof according to claim 2, characterized in that: the reinforcing parts are made of TPU materials, three reinforcing parts are arranged and distributed in an annular mode, and the three reinforcing parts are bonded through glue.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115274197A (en) * | 2022-09-27 | 2022-11-01 | 国网天津静海供电有限公司 | Composite cable and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115274197A (en) * | 2022-09-27 | 2022-11-01 | 国网天津静海供电有限公司 | Composite cable and manufacturing method thereof |
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