CN116206827A - Production method of flame-retardant cable - Google Patents
Production method of flame-retardant cable Download PDFInfo
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- CN116206827A CN116206827A CN202310273609.5A CN202310273609A CN116206827A CN 116206827 A CN116206827 A CN 116206827A CN 202310273609 A CN202310273609 A CN 202310273609A CN 116206827 A CN116206827 A CN 116206827A
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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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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- Manufacturing & Machinery (AREA)
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Abstract
The invention discloses a production method of a flame-retardant cable, which belongs to the technical field of cables and comprises the following steps: mixing nitrile rubber, polyvinyl chloride resin, ethylene-methyl methacrylate copolymer, flame retardant auxiliary agent, stabilizer and crosslinking sensitizer, discharging after the mixing temperature reaches 145-160 ℃, and granulating by adopting a double-screw extruder to obtain outer sheath granules; and coating the outer sheath granules on the surface of the conductive core layer through extrusion equipment, adopting an electron accelerator to carry out irradiation crosslinking, and then carrying out air cooling and rolling to obtain the flame-retardant cable. The cable sheath takes the nitrile rubber and the polyvinyl chloride resin as the base materials, and has good mechanical property, wear resistance and ageing resistance after blending; and a flame retardant auxiliary is added, so that the flame retardant auxiliary not only can be uniformly dispersed in the base material, but also can participate in the crosslinking and polymerization reaction of the base material, the wear resistance and the mechanical strength of the sheath material are enhanced, and the cable is endowed with safe, efficient, stable and durable flame retardant and fireproof performance.
Description
Technical Field
The invention belongs to the technical field of cables, and particularly relates to a production method of a flame-retardant cable.
Background
The cable is a line for electric power connection in a building, and along with the rapid development of the current society, the demand for electric power is continuously increased, and the number of fires generated by electricity is continuously increased under the condition, so that the cable has poor flame retardance in the transmission process, and once overload, short circuit, overlarge contact resistance or overlarge external heat source occur, the cable is extremely easy to cause the fire phenomenon, and the fire is caused, so that the design and the production of the flame-retardant fireproof cable have good application prospects. In the prior art, an insulating sheath with flame retardant property or a fireproof material is filled between the wire and the sheath, so that the fireproof effect is achieved; the latter is relatively more cumbersome to prepare than the former, due to the need to ensure uniformity and compactness of filling. Therefore, the improvement of the flame retardant property and the mechanical property of the insulating sheath has very important significance for the flame-retardant cable.
The Chinese patent publication No. CN108047517A discloses a fireproof, rat-proof and termite-proof cable sheath material which comprises the following components in parts by weight: 40 parts of styrene-butadiene rubber, 30 parts of hydrogenated nitrile rubber, 20 parts of ethylene propylene rubber, 20 parts of polyethylene, 10 parts of silicon hydroxide, 5 parts of solid calcium-zinc stabilizer, 5 parts of calcium carbonate, 10 parts of reclaimed rubber, 4 parts of conductive carbon black, 4 parts of talcum powder, 5 parts of polyolefin, 4 parts of white carbon black, 4 parts of magnesium chloride, 3 parts of silane coupling agent, 10 parts of talcum powder, 10 parts of camphor and 10 parts of pyrethrin. According to the patent, the flame retardance of the sheath can be improved by adding materials such as magnesium chloride and silicon hydroxide, but the materials belong to inorganic materials, so that uniform dispersion in a polymer base material is difficult to realize, and the flame retardance effect is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a production method of a flame-retardant cable.
The aim of the invention can be achieved by the following technical scheme:
the production method of the flame-retardant cable comprises a conductive core layer and an outer sheath layer coated on the conductive core layer, and the production method comprises the following steps:
firstly, mixing nitrile rubber, polyvinyl chloride resin, ethylene-methyl methacrylate copolymer, flame retardant auxiliary agent, stabilizer and crosslinking sensitizer according to a proportion, discharging after the mixing temperature reaches 145-160 ℃, granulating by adopting a double screw extruder, controlling the extrusion temperature at 150-160 ℃, granulating, and cooling to obtain the outer sheath granules;
and secondly, coating the outer sheath granules on the surface of the conductive core layer through extrusion equipment, adopting an electron accelerator to irradiate and crosslink, and then carrying out air cooling and winding to obtain the flame-retardant cable.
Further, in the second step, the crosslinking parameters are irradiated: the energy of electrons is controlled to be 1.8-2.1Mev, the electron beam current is 25-30mA, the linear speed of the cable is 60-80m/min, and the irradiation crosslinking is carried out for 2-3 times.
Further, the outer sheath comprises the following raw materials in parts by weight: 40-50 parts of nitrile rubber, 25-30 parts of polyvinyl chloride resin, 12-15 parts of ethylene-methyl methacrylate copolymer, 7-10 parts of flame retardant auxiliary agent, 2-3 parts of stabilizer and 0.8-1 part of crosslinking sensitizer.
Further, the stabilizer is a mixture of 2, 4-trimethyl-1, 2-dihydro-quinoline polymer and stearic acid metal salt according to any proportion.
Further, the crosslinking sensitizer is triallyl isocyanurate or trimethylolpropane trimethacrylate.
Further, the flame retardant auxiliary is prepared by the following steps:
s1, adding 2-carboxyethyl phenyl hypophosphorous acid, triethylamine and anhydrous into a dry three-neck flask provided with a stirring device, a condensing reflux device and a nitrogen guide pipeAdding dichloromethane, nitrogen, and DMSO (dimethyl sulfoxide) solution of melamine and DIC (N, N-diisopropylcarbodiimide, dehydrating agent) after 10min, and cooling at room temperature and N 2 Stirring under protection for reaction for 3h, extracting with hot distilled water (60-70deg.C) for three times after reaction, drying organic layer with anhydrous magnesium sulfate, filtering, and rotary evaporating (removing dichloromethane and DMSO) to obtain intermediate; the dosage ratio of the 2-carboxyethyl phenyl hypophosphorous acid, the triethylamine, the anhydrous methylene dichloride, the melamine and the DIC is 21.4g to 10.1g to 300mL to 0.105mol to 12.6g; the concentration of the DMSO solution of the melamine is 2.1mol/L;
under the action of triethylamine and DIC, 2-carboxyethyl phenyl hypophosphorous acid molecule-COOH and melamine molecule-NH 2 Amidation reaction is carried out, and the molar ratio of the two is controlled to be close to 1:1 and the melamine is slightly excessive, so that the melamine has only one-NH under the influence of steric hindrance 2 Takes part in the reaction to obtain an intermediate product, and the reaction process is as follows:
s2, placing the intermediate and methylene dichloride in a three-neck flask, keeping the temperature at 25-30 ℃, and stirring to completely dissolve the intermediate and the methylene dichloride; mixing 6-chloro-1-hexene, sodium carbonate and THF (tetrahydrofuran) uniformly, slowly dripping into a three-mouth flask by adopting a constant pressure dropping funnel, stirring while dripping, continuously stirring at 25-30 ℃ for reaction for 3 hours after dripping, removing most of solvent (dichloromethane and THF) by rotary evaporation after reaction, adding distilled water, mixing uniformly, extracting by using dichloromethane, washing an organic phase by using saturated NaCl aqueous solution for multiple times, and using anhydrous Na 2 SO 4 Drying, suction filtering, and finally removing dichloromethane by reduced pressure distillation to obtain a flame retardant auxiliary agent; the ratio of the amount of the intermediate, 6-chloro-1-hexene to sodium carbonate was 8.1g:0.11mol:10.6g;
-NH on intermediate molecules under the action of sodium carbonate 2 Nucleophilic substitution reaction with-Cl on 6-chloro-1-hexene molecule, by controlling the molar ratio of the two to be close to 1:4, carrying out chemical reaction as shown below to obtain the flame retardant auxiliary:
the obtained flame retardant auxiliary contains N-containing heterocycle, phosphate ester groups, benzene rings and a plurality of branched fatty chains, wherein the N-containing heterocycle and the phosphate ester groups belong to P-N synergistic flame retardant components, and the flame retardant auxiliary has the flame retardant effect of an efficient, environment-friendly and multiple synergistic mechanism, so that the cable sheath material can be endowed with safe and efficient flame retardant performance; the aliphatic chain and the sheath base material (nitrile rubber and polyvinyl chloride resin) have good similar compatibility, so that the uniform dispersion of the flame retardant auxiliary agent in the sheath base material can be promoted, the tail end of the aliphatic chain is an unsaturated carbon-carbon double bond, the aliphatic chain can participate in the crosslinking and polymerization reaction of the base material in the processes of the melt blending and the irradiation crosslinking of the sheath base material, the crosslinking density of the sheath material is improved, the wear resistance and the mechanical strength of the sheath material can be further enhanced, in addition, the interaction force of the flame retardant auxiliary agent and the polymer base material can be enhanced, the defect that flame retardant components are easy to migrate and exude is overcome, and the safe, efficient, stable and durable flame retardant and fireproof performance of the cable is further endowed.
The invention has the beneficial effects that:
the cable sheath takes the nitrile rubber and the polyvinyl chloride resin as the base materials, and the nitrile rubber and the polyvinyl chloride resin have good compatibility, and have good mechanical property, wear resistance and ageing resistance after being blended; and the flame retardant auxiliary is added, so that the flame retardant auxiliary can be uniformly dispersed in the base material, can participate in crosslinking and polymerization reactions of the base material, improves the crosslinking density of the sheath material, further can enhance the wear resistance and mechanical strength of the sheath material, can enhance the interaction force between the flame retardant auxiliary and the polymer base material, improves the defect that flame retardant components are easy to migrate and exude, and further endows the cable with safe, efficient, stable and durable flame retardant and fireproof performance.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Preparing a flame retardant auxiliary:
s1, adding 21.4g of 2-carboxyethyl phenyl hypophosphorous acid, 10.1g of triethylamine and 300mL of anhydrous methylene dichloride into a dry three-neck flask provided with a stirring device, a condensing reflux device and a nitrogen guide pipe, introducing nitrogen for 10min, adding 50mL of a DMSO solution (with the concentration of 2.1 mol/L) of melamine and 12.6g of DIC, and after the adding, cooling to room temperature and N 2 Stirring under protection for reaction for 3h, extracting with hot distilled water (60 ℃ C.) for three times after the reaction, drying the organic layer with anhydrous magnesium sulfate, filtering, and rotary evaporating (removing dichloromethane and DMSO) to obtain intermediate;
s2, placing 8.1g of the intermediate and 100mL of dichloromethane in a three-neck flask, keeping the temperature at 25 ℃, and stirring to completely dissolve the intermediate; mixing 0.11mol of 6-chloro-1-hexene, 10.6g of sodium carbonate and 40mL of THF uniformly, slowly dripping the mixture into a three-neck flask by adopting a constant pressure dropping funnel, stirring while dripping, continuously stirring at 25 ℃ for 3 hours after dripping, removing most of solvent (dichloromethane and THF) by rotary evaporation after the reaction is finished, adding distilled water, mixing uniformly, extracting by using dichloromethane, washing an organic phase for multiple times by using saturated NaCl aqueous solution, and then using anhydrous Na 2 SO 4 Drying, suction filtering, and finally removing dichloromethane by reduced pressure distillation to obtain the flame retardant auxiliary.
Example 2
Preparing a flame retardant auxiliary:
s1, adding 42.8g of 2-carboxyethyl phenyl hypophosphorous acid, 20.2g of triethylamine and 600mL of anhydrous methylene dichloride into a dry three-neck flask provided with a stirring device, a condensing reflux device and a nitrogen guide pipe, introducing nitrogen for 10min, adding 100mL of a DMSO solution (with the concentration of 2.1 mol/L) of melamine and 12.6g of DIC, and after the adding, cooling to room temperatureN 2 Stirring under protection for reaction for 3h, extracting with hot distilled water (70 ℃ C.) for three times after the reaction, drying the organic layer with anhydrous magnesium sulfate, filtering, and rotary evaporating (removing dichloromethane and DMSO) to obtain intermediate;
s2, placing 16.2g of the intermediate and 200mL of dichloromethane in a three-neck flask, keeping the temperature at 30 ℃, and stirring to completely dissolve the intermediate; mixing 0.22mol of 6-chloro-1-hexene, 21.2g of sodium carbonate and 80mL of THF uniformly, slowly dripping the mixture into a three-neck flask by adopting a constant pressure dropping funnel, stirring while dripping, continuously stirring at 30 ℃ for 3 hours after dripping, removing most of solvent (dichloromethane and THF) by rotary evaporation after the reaction is finished, adding distilled water, mixing uniformly, extracting by using dichloromethane, washing an organic phase for multiple times by using saturated NaCl aqueous solution, and then using anhydrous Na 2 SO 4 Drying, suction filtering, and finally removing dichloromethane by reduced pressure distillation to obtain the flame retardant auxiliary.
Example 3
The flame-retardant cable comprises a conductive core layer and an outer sheath layer coated on the conductive core layer, and the production method comprises the following steps:
firstly, mixing 40 parts of nitrile rubber, 25 parts of polyvinyl chloride resin, 12 parts of ethylene-methyl methacrylate copolymer, 7 parts of flame retardant auxiliary agent prepared in example 1,2 parts of stabilizer and 0.8 part of triallyl isocyanurate according to parts by weight, discharging after the mixing temperature reaches 145 ℃, granulating by a double-screw extruder, controlling the extrusion temperature at 150 ℃, and granulating and cooling to prepare the outer sheath granules;
and secondly, coating the outer sheath granules on the surface of the conductive core layer through extrusion equipment, adopting an electron accelerator to irradiate and crosslink, controlling the energy of electrons to be 1.8Mev, controlling the electron beam current to be 25mA, controlling the linear speed of the cable to be 60m/min, irradiating and crosslinking for 2 times, and then obtaining the flame-retardant cable after air cooling and winding.
The stabilizer is a mixture of 2, 4-trimethyl-1, 2-dihydro-quinoline polymer and metal stearate according to the mass ratio of 1:1.
Example 4
The flame-retardant cable comprises a conductive core layer and an outer sheath layer coated on the conductive core layer, and the production method comprises the following steps:
firstly, mixing 45 parts of nitrile rubber, 28 parts of polyvinyl chloride resin, 13.5 parts of ethylene-methyl methacrylate copolymer, 8.5 parts of flame retardant auxiliary agent prepared in example 2, 2.5 parts of stabilizer and 0.9 part of trimethylolpropane trimethacrylate according to parts by weight, discharging after the mixing temperature reaches 152 ℃, granulating by a double-screw extruder, controlling the extrusion temperature at 155 ℃, granulating, and cooling to obtain outer sheath granules;
and secondly, coating the outer sheath granules on the surface of the conductive core layer through extrusion equipment, performing irradiation crosslinking by adopting an electron accelerator, controlling the energy of electrons to be 2Mev, controlling the electron beam current to be 28mA, performing irradiation crosslinking for 3 times at the linear speed of the cable of 70m/min, and performing air cooling and winding to obtain the flame-retardant cable.
The stabilizer is a mixture of 2, 4-trimethyl-1, 2-dihydro-quinoline polymer and metal stearate according to a mass ratio of 1:2.
Example 5
The flame-retardant cable comprises a conductive core layer and an outer sheath layer coated on the conductive core layer, and the production method comprises the following steps:
firstly, mixing 50 parts of nitrile rubber, 30 parts of polyvinyl chloride resin, 15 parts of ethylene-methyl methacrylate copolymer, 10 parts of flame retardant auxiliary agent prepared in example 1, 3 parts of stabilizer and 1 part of triallyl isocyanurate according to parts by weight, discharging after the mixing temperature reaches 160 ℃, granulating by a double-screw extruder, controlling the extrusion temperature at 160 ℃, and granulating and cooling to prepare the outer sheath granules;
and secondly, coating the outer sheath granules on the surface of the conductive core layer through extrusion equipment, adopting an electron accelerator to irradiate and crosslink, controlling the energy of electrons to be 2.1Mev, controlling the electron beam current to be 30mA, controlling the linear speed of the cable to be 80m/min, irradiating and crosslinking for 3 times, and then obtaining the flame-retardant cable after air cooling and winding.
The stabilizer is a mixture of 2, 4-trimethyl-1, 2-dihydro-quinoline polymer and metal stearate according to the mass ratio of 2:1.
Comparative example
The flame retardant auxiliary in example 3 was changed to ammonium polyphosphate, and the remaining raw materials and the preparation process were unchanged, to obtain a cable.
The cables obtained in examples 3-5 and comparative examples were subjected to the following performance tests:
mechanical properties: testing tensile strength and elongation at break of the cable according to GB/T2951 general test method for insulation and sheath materials of wires and cables;
aging performance: according to GB/T2951 general test method for insulation and sheath materials of wires and cables, testing the retention rate of elongation at break after 185 ℃/120h air box heat aging;
combustion performance: the combustion performance test is carried out on the material of the outer sheath layer of the cable by referring to 6.3 wire and cable sleeve plastic materials in GB 8624-1997 'method for classifying combustion performance of building materials', and the oxygen index and the combustion performance level of the outer sheath layer are tested;
the results are shown in the following table:
as can be seen from the data in the table, the cable obtained by the invention has good fire resistance, flame retardance, mechanical property and higher ageing resistance; the data of the comparative example show that the addition of the flame retardant auxiliary agent not only can effectively improve the flame retardant property of the cable, but also can improve the mechanical property of the cable to a certain extent.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (8)
1. The production method of the flame-retardant cable is characterized by comprising the following steps of:
firstly, mixing nitrile rubber, polyvinyl chloride resin, ethylene-methyl methacrylate copolymer, flame retardant auxiliary agent, stabilizer and crosslinking sensitizer according to a proportion, discharging after the mixing temperature reaches 145-160 ℃, granulating by adopting a double screw extruder, controlling the extrusion temperature at 150-160 ℃, granulating, and cooling to obtain the outer sheath granules;
and secondly, coating the outer sheath granules on the surface of the conductive core layer through extrusion equipment, adopting an electron accelerator to irradiate and crosslink, and obtaining the fireproof cable after air cooling and rolling.
2. A method of producing a flame retardant cable according to claim 1, characterized in that in the second step the cross-linking parameters are irradiated: the energy of electrons is controlled to be 1.8-2.1Mev, the electron beam current is 25-30mA, the linear speed of the cable is 60-80m/min, and the irradiation crosslinking is carried out for 2-3 times.
3. The method for producing a flame-retardant cable according to claim 1, wherein the raw materials of the outer sheath are as follows in parts by weight: 40-50 parts of nitrile rubber, 25-30 parts of polyvinyl chloride resin, 12-15 parts of ethylene-methyl methacrylate copolymer, 7-10 parts of flame retardant auxiliary agent, 2-3 parts of stabilizer and 0.8-1 part of crosslinking sensitizer.
4. The method for producing a flame-retardant cable according to claim 1, wherein the stabilizer is a mixture of 2, 4-trimethyl-1, 2-dihydroquinoline polymer and metal stearate in an arbitrary ratio.
5. The method for producing a flame-retardant cable according to claim 1, wherein the crosslinking sensitizer is triallyl isocyanurate or trimethylolpropane trimethacrylate.
6. The method of producing a flame retardant cable according to claim 1, wherein the flame retardant auxiliary is prepared by the steps of:
s1, adding 2-carboxyethyl phenyl hypophosphorous acid, triethylamine and anhydrous methylene dichloride into a dry three-neck flask provided with a stirring device, a condensing reflux device and a nitrogen guide pipe, introducing nitrogen, continuously introducing for 10min, then adding a DMSO solution of melamine and DIC, and after the addition, cooling to room temperature and N 2 Stirring under protection for reaction for 3h, extracting with hot distilled water for three times after the reaction is finished, drying an organic layer with anhydrous magnesium sulfate, filtering, and finally performing rotary evaporation to obtain an intermediate;
s2, placing the intermediate and methylene dichloride in a three-neck flask, keeping the temperature at 25-30 ℃, and stirring to completely dissolve the intermediate and the methylene dichloride; mixing 6-chloro-1-hexene, sodium carbonate and THF uniformly, then adopting a constant pressure dropping funnel to slowly drop into a three-neck flask, stirring while dropping, continuing to stir at 25-30 ℃ for 3h after dropping, removing most of solvent by rotary evaporation after the reaction is finished, adding distilled water, mixing uniformly, extracting by using dichloromethane, washing an organic phase with saturated NaCl aqueous solution for multiple times, and then using anhydrous Na 2 SO 4 Drying, suction filtering, and finally removing dichloromethane by reduced pressure distillation to obtain the flame retardant auxiliary.
7. The method for producing a flame-retardant cable according to claim 6, wherein the amount of 2-carboxyethylphenyl hypophosphorous acid, triethylamine, anhydrous methylene chloride, melamine and DIC used in the step S1 is 21.4 g/10.1 g/300 mL/0.105 mol/12.6 g; the concentration of the DMSO solution of melamine was 2.1mol/L.
8. The method of producing a flame retardant cable according to claim 6, wherein the ratio of the amounts of the intermediate, 6-chloro-1-hexene and sodium carbonate used in step S2 is 8.1g:0.11mol:10.6g.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310273609.5A CN116206827A (en) | 2023-03-21 | 2023-03-21 | Production method of flame-retardant cable |
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| CN202310273609.5A CN116206827A (en) | 2023-03-21 | 2023-03-21 | Production method of flame-retardant cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116606488A (en) * | 2023-06-12 | 2023-08-18 | 深圳市好年璟科技有限公司 | Wear-resistant rubber-plastic composite material |
| CN117700891A (en) * | 2023-12-22 | 2024-03-15 | 安徽华海特种电缆集团有限公司 | Radiation-resistant tensile festoon cable |
| CN117747194A (en) * | 2023-12-18 | 2024-03-22 | 安徽华海特种电缆集团有限公司 | Special movable round cable for high-temperature-resistant steel ladle car |
-
2023
- 2023-03-21 CN CN202310273609.5A patent/CN116206827A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116606488A (en) * | 2023-06-12 | 2023-08-18 | 深圳市好年璟科技有限公司 | Wear-resistant rubber-plastic composite material |
| CN116606488B (en) * | 2023-06-12 | 2024-05-17 | 深圳市好年璟科技有限公司 | Wear-resistant rubber-plastic composite material |
| CN117747194A (en) * | 2023-12-18 | 2024-03-22 | 安徽华海特种电缆集团有限公司 | Special movable round cable for high-temperature-resistant steel ladle car |
| CN117747194B (en) * | 2023-12-18 | 2024-06-11 | 安徽华海特种电缆集团有限公司 | Special movable round cable for high-temperature-resistant steel ladle car |
| CN117700891A (en) * | 2023-12-22 | 2024-03-15 | 安徽华海特种电缆集团有限公司 | Radiation-resistant tensile festoon cable |
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