CN114058110A - Halogen-free flame-retardant modified cable material and preparation method thereof - Google Patents
Halogen-free flame-retardant modified cable material and preparation method thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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- C08K3/00—Use of inorganic substances as compounding ingredients
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- C08K3/20—Oxides; Hydroxides
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
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- 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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2201/22—Halogen free composition
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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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Abstract
The invention discloses a halogen-free flame-retardant modified cable material and a preparation method thereof, wherein the halogen-free flame-retardant modified cable material comprises the following raw materials in parts by weight: 20-25 parts of ammonium polyphosphate, 18-21 parts of ethylene-vinyl acetate copolymer, 9-13 parts of pentaerythritol, 30-38 parts of polyolefin resin, 5-7 parts of halogen-free inorganic flame retardant, 2-4 parts of synergistic flame retardant, 0.5-1 part of antioxidant, 1-2 parts of processing aid, 4-6 parts of anti-aging agent and 2-5 parts of carbon black master batch, and the preparation method comprises the following steps: (1) preparing modified pentaerythritol; (2) mixing materials at a high speed; (3) extruding and granulating to obtain a cable material; (4) and (4) performing irradiation crosslinking to obtain the halogen-free flame-retardant modified cable material. The halogen-free flame-retardant modified cable material prepared by the invention has excellent flame retardance and non-flame retardance, has very small smoke generation amount during combustion, does not generate corrosive gas, and has the advantages of good high-temperature resistance, good low-temperature resistance, good aging resistance, good mechanical property and the like.
Description
Technical Field
The invention relates to the technical field of preparation of high polymer materials for wires and cables, in particular to a halogen-free flame-retardant modified cable material and a preparation method thereof.
Background
With the rapid development of the industries such as metallurgy, electric power, electronics, automation, information networks and the like in China, the consumption of flame-retardant electric wires and cables matched with the industries, such as power cables, control cables, signal cables, instrument and meter cables, computer cables and the like is increased rapidly.
Most of the traditional flame-retardant cables use polyvinyl chloride as insulation or sheath. Although polyvinyl chloride has the characteristics of good flame retardance, low cost, good extrusion process and the like, because the polyvinyl chloride contains halogen, a large amount of hydrogen halide gas and dense smoke are released when the polyvinyl chloride is burnt in a fire, so that the secondary hazard of the fire is caused, and the loss of the fire is increased. Scientific research proves that the harm of halide to human health and environment is more and more serious, people pay more and more attention to environmental protection, and European Union and the like propose regulations for limiting the use of polyvinyl chloride. In China, the rules of 3 months of 1998 of the power supply bureau in Beijing City prohibit polyvinyl chloride type electric wires and cables from being used in the system, and the low-smoke halogen-free flame-retardant electric wires and cables are widely used and have great development potential, and particularly the low-smoke halogen-free flame-retardant electric wires and cables are required to be used in dense occasions such as subways, high-rise buildings, various stadium buildings and the like. However, the halogen-free flame-retardant polyolefin cable material in the current market has the defects of low flame retardance, poor electrical insulating property, poor water resistance and the like, and is difficult to meet the requirements of B-type flame retardance and halogen-free flame-retardant building cloth wires and cables used in humid occasions.
Disclosure of Invention
The invention aims to provide a halogen-free flame-retardant modified cable material and a preparation method thereof.
The technical purpose of the invention is realized by the following technical scheme:
the halogen-free flame-retardant modified cable material is characterized by comprising the following raw materials in parts by weight: 20-25 parts of ammonium polyphosphate, 18-21 parts of ethylene-vinyl acetate copolymer, 9-13 parts of pentaerythritol, 30-38 parts of polyolefin resin, 5-7 parts of halogen-free inorganic flame retardant, 2-4 parts of synergistic flame retardant, 0.5-1 part of antioxidant, 1-2 parts of processing aid, 4-6 parts of anti-aging agent and 2-5 parts of carbon black master batch.
Preferably, the pentaerythritol is ultrafine pentaerythritol, and the particle size D50 of the ultrafine pentaerythritol is 3-5 mm.
Preferably, the polyolefin resin is at least one of ethylene-vinyl acetate copolymer, ethylene-propylene-diene monomer, maleic anhydride grafted metallocene polyethylene, and linear low density polyethylene.
Preferably, the halogen-free inorganic flame retardant is a mixture of aluminum hydroxide and magnesium hydroxide, the aluminum hydroxide accounts for 40-45% of the mixture, the balance is magnesium hydroxide, and the magnesium hydroxide is superfine magnesium hydroxide with activated surface.
Preferably, the synergistic flame retardant is one of carbon nanotubes, antimony trioxide or aluminum tripolyphosphate.
Preferably, the antioxidant is one of 2, 6-di-tert-butyl-4-methylphenol, n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and tris (2, 4-di-tert-butylphenyl) phosphite.
Preferably, the processing aid is one or more of stearic acid, organic montmorillonite, kaolin, organic silicone oil and paraffin.
Preferably, the anti-aging agent is one of N-phenyl-N '-isopropyl-p-phenylenediamine, N-N' -diphenyl-p-phenylenediamine or N-phenyl-beta-naphthylamine.
A preparation method of a halogen-free flame-retardant modified cable material comprises the following steps: the method comprises the following steps:
(1) firstly weighing ammonium polyphosphate and ethylene-vinyl acetate copolymer according to the weight parts, carrying out melt blending in a rheometer to prepare master batch, uniformly mixing the master batch and pentaerythritol, and mixing the master batch and the pentaerythritol in the rheometer at 135 ℃ and 260 ℃ for 310 rpm for 10-15 minutes to prepare modified pentaerythritol;
(2) weighing the rest components in parts by weight, firstly mixing the polyolefin resin, the halogen-free inorganic flame retardant and the processing aid in a rotary mixer at the temperature of 130-;
(3) conveying the mixed material obtained in the step (2) to a double-screw extruder through a double-cone feeding system, and finally, conveying the mixed material to a single screw for extrusion granulation to obtain a cable material, and extruding the obtained cable material to cover the outer layer of the conductor to obtain a cable to be irradiated;
(4) carrying out radiation crosslinking on the cable to be irradiated obtained in the step (3), wherein the radiation source is gamma60Co, source strength 3.5x1015~3.7x1015Bq, at room temperature, N2Irradiating the cable to be irradiated for 2-4 times under the atmosphere with the irradiation dose of 10-12kGy/h, wherein the irradiation time is 2-2.5h each time, and finally obtaining the halogen-free flame-retardant modified cable material.
Preferably, the temperature of the first zone to the seventh zone of the double-screw extruder in the step (3) is set to be 100-105 ℃ from the first zone to the second zone and 95-100 ℃ from the third zone to the seventh zone; the temperature of the single screw extruder is set to be 105-110 ℃ in the first zone, 115-120 ℃ in the second zone, 125-130 ℃ in the third zone, 135-140 ℃ at the head and 145-150 ℃ at the hot die cutting surface.
In conclusion, the beneficial effects of the invention are as follows: the halogen-free flame-retardant modified cable material prepared by the invention has excellent flame retardance and non-flame-retarding property, has very small smoke generation amount during combustion, does not generate corrosive gas, and has the advantages of good high-temperature resistance, good low-temperature resistance, good aging resistance, good mechanical property and the like.
Detailed Description
The following further describes the embodiments of the present invention, which are not to be construed as limiting the invention.
Example 1
The halogen-free flame-retardant modified cable material comprises the following raw materials in parts by weight: 21 parts of ammonium polyphosphate, 20 parts of ethylene-vinyl acetate copolymer, 11 parts of pentaerythritol, wherein the pentaerythritol is superfine pentaerythritol, the particle size D50 value of the superfine pentaerythritol is 3-5mm, 32 parts of ethylene-vinyl acetate copolymer, 2 parts of aluminum hydroxide, 3 parts of surface activated superfine magnesium hydroxide, 3 parts of antimony trioxide, 1 part of 2, 6-di-tert-butyl-4-methylphenol, 2 parts of organic montmorillonite, 5 parts of N-phenyl-N' -isopropyl-p-phenylenediamine and 4 parts of carbon black master batch.
A preparation method of a halogen-free flame-retardant modified cable material comprises the following steps: the method comprises the following steps:
(1) firstly weighing ammonium polyphosphate and ethylene-vinyl acetate copolymer according to parts by weight, carrying out melt blending in a rheometer to prepare a master batch, uniformly mixing the master batch and pentaerythritol, and mixing in the rheometer at 129 ℃ at 310 rpm for 15 minutes to prepare the modified pentaerythritol.
(2) Weighing the rest components in parts by weight, firstly mixing the polyolefin resin, aluminum hydroxide, surface-activated superfine magnesium hydroxide and surface-activated superfine magnesium hydroxide in a rotary mixer at 130 ℃ at 300 r/min for 20 minutes, and then mixing the modified pentaerythritol prepared in the step (1) and the rest components in a high-speed mixer at room temperature at 500 r/min for 4 minutes.
(3) Conveying the mixed materials in the step (2) to a double-screw extruder through a double-cone feeding system, and finally, conveying the mixed materials to a single-screw extruder for extrusion granulation, wherein the temperature of a first area to a seventh area of the double-screw extruder is set to be 100-105 ℃ from the first area to the second area, and the temperature of a third area to the seventh area is 95-100 ℃; the temperature of the single-screw extruder is set to be 105-110 ℃ in the first zone, 115-120 ℃ in the second zone, 125-130 ℃ in the third zone, 135-140 ℃ at the head and 145-150 ℃ at the hot-cutting die surface, and the obtained cable material is extruded to cover the outer layer of the conductor to obtain the cable to be irradiated.
(4) Carrying out radiation crosslinking on the cable to be irradiated obtained in the step (3), wherein the radiation source is gamma60Co, source strength 3.7x1015Bq, at room temperature, N2And irradiating the cable to be irradiated for 2 times under the atmosphere with the irradiation dose of 11kGy/h, wherein the irradiation time is 2h each time, and finally obtaining the halogen-free flame-retardant modified cable material.
Example 2
The halogen-free flame-retardant modified cable material comprises the following raw materials in parts by weight: 23 parts of ammonium polyphosphate, 21 parts of ethylene-vinyl acetate copolymer, 13 parts of pentaerythritol, the pentaerythritol is superfine pentaerythritol, the particle size D50 value of the superfine pentaerythritol is 3-5mm, 17 parts of ethylene propylene diene rubber, 20 parts of ethylene-vinyl acetate copolymer, 3 parts of aluminum hydroxide, 4 parts of surface activated superfine magnesium hydroxide, 4 parts of carbon nano tube, 1 part of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) N-octadecyl propionate, 1 part of organic silicone oil, 1 part of stearic acid, 4 parts of N-N' -diphenyl-p-phenylenediamine and 3 parts of carbon black master batch.
A preparation method of a halogen-free flame-retardant modified cable material comprises the following steps: the method comprises the following steps:
(1) firstly weighing ammonium polyphosphate and ethylene-vinyl acetate copolymer according to parts by weight, carrying out melt blending in a rheometer to prepare a master batch, uniformly mixing the master batch and pentaerythritol, and mixing in the rheometer at 135 ℃ at 280 rpm for 12 minutes to prepare the modified pentaerythritol.
(2) Weighing the rest components in parts by weight, mixing the polyolefin resin, aluminum hydroxide, surface-activated superfine magnesium hydroxide and surface-activated superfine magnesium hydroxide in a rotary mixer at 140 ℃ at 280 rpm for 20 minutes, and mixing the modified pentaerythritol prepared in the step (1) and the rest components in a high-speed mixer at 550 rpm for 5 minutes at room temperature.
(3) Conveying the mixed materials in the step (2) to a double-screw extruder through a double-cone feeding system, and finally, conveying the mixed materials to a single-screw extruder for extrusion granulation, wherein the temperature of a first area to a seventh area of the double-screw extruder is set to be 100-105 ℃ from the first area to the second area, and the temperature of a third area to the seventh area is 95-100 ℃; the temperature of the single-screw extruder is set to be 105-110 ℃ in the first zone, 115-120 ℃ in the second zone, 125-130 ℃ in the third zone, 135-140 ℃ at the head and 145-150 ℃ at the hot-cutting die surface, and the obtained cable material is extruded to cover the outer layer of the conductor to obtain the cable to be irradiated.
(4) Carrying out radiation crosslinking on the cable to be irradiated obtained in the step (3), wherein the radiation source is gamma60Co, source strength 3.6x1015Bq, at room temperature, N2And irradiating the cable to be irradiated for 3 times under the atmosphere with the irradiation dose of 12kGy/h, wherein the irradiation time is 2.5h each time, and finally obtaining the halogen-free flame-retardant modified cable material.
Example 3
The halogen-free flame-retardant modified cable material comprises the following raw materials in parts by weight: 20 parts of ammonium polyphosphate, 20 parts of ethylene-vinyl acetate copolymer, 9 parts of pentaerythritol, the pentaerythritol is superfine pentaerythritol, the particle size D50 value of the superfine pentaerythritol is 3-5mm, 12 parts of maleic anhydride grafted metallocene polyethylene, 23 parts of ethylene-vinyl acetate copolymer, 3 parts of aluminum hydroxide, 4 parts of surface activated superfine magnesium hydroxide, 2 parts of aluminum tripolyphosphate, 0.5 part of tris (2, 4-di-tert-butylphenyl) phosphite, 0.5 part of stearic acid, 1 part of organic montmorillonite, 4 parts of N-phenyl-beta-naphthylamine and 2 parts of carbon black master batch.
A preparation method of a halogen-free flame-retardant modified cable material comprises the following steps: the method comprises the following steps:
(1) firstly weighing ammonium polyphosphate and ethylene-vinyl acetate copolymer according to parts by weight, carrying out melt blending in a rheometer to prepare a master batch, uniformly mixing the master batch and pentaerythritol, and mixing in the rheometer at 132 ℃ at 300 r/min for 13 minutes to prepare the modified pentaerythritol.
(2) Weighing the rest components in parts by weight, firstly mixing the polyolefin resin, aluminum hydroxide, surface-activated superfine magnesium hydroxide and surface-activated superfine magnesium hydroxide in a rotary mixer at 150 ℃ at 260 rpm for 17 minutes, and then mixing the modified pentaerythritol prepared in the step (1) and the rest components in a high-speed mixer at room temperature at 500 rpm for 4 minutes.
(3) Conveying the mixed materials in the step (2) to a double-screw extruder through a double-cone feeding system, and finally, conveying the mixed materials to a single-screw extruder for extrusion granulation, wherein the temperature of a first area to a seventh area of the double-screw extruder is set to be 100-105 ℃ from the first area to the second area, and the temperature of a third area to the seventh area is 95-100 ℃; the temperature of the single-screw extruder is set to be 105-110 ℃ in the first zone, 115-120 ℃ in the second zone, 125-130 ℃ in the third zone, 135-140 ℃ at the head and 145-150 ℃ at the hot-cutting die surface, and the obtained cable material is extruded to cover the outer layer of the conductor to obtain the cable to be irradiated.
(4) Carrying out radiation crosslinking on the cable to be irradiated obtained in the step (3), wherein the radiation source is gamma60Co, source strength 3.5x1015Bq, at room temperature, N2And irradiating the cable to be irradiated for 2 times under the atmosphere with the irradiation dose of 10kGy/h, wherein the irradiation time is 2.5h each time, and finally obtaining the halogen-free flame-retardant modified cable material.
The halogen-free flame-retardant modified cable material prepared by the invention has excellent flame retardance and non-flame retardance, and is capable of generating flame when being burntThe halogen-free flame-retardant modified cable material prepared in the embodiment 1-3 has the advantages of average overall tensile strength of 13.9MPa, elongation at break of 300 percent, dielectric strength of 28MV/m and volume resistivity of 9.5x10 at 20 ℃, does not generate corrosive gas and has good high and low temperature resistance, aging resistance and mechanical properties12Omega.m, an oxygen index of 35%, a Shore A hardness of 95, and a maximum smoke density of 280 Dm.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Claims (10)
1. The halogen-free flame-retardant modified cable material is characterized by comprising the following raw materials in parts by weight: 20-25 parts of ammonium polyphosphate, 18-21 parts of ethylene-vinyl acetate copolymer, 9-13 parts of pentaerythritol, 30-38 parts of polyolefin resin, 5-7 parts of halogen-free inorganic flame retardant, 2-4 parts of synergistic flame retardant, 0.5-1 part of antioxidant, 1-2 parts of processing aid, 4-6 parts of anti-aging agent and 2-5 parts of carbon black master batch.
2. The halogen-free flame-retardant modified cable material according to claim 1, wherein: the pentaerythritol is superfine pentaerythritol, and the particle size D50 value of the superfine pentaerythritol is 3-5 mm.
3. The halogen-free flame-retardant modified cable material according to claim 1, wherein: the polyolefin resin is at least one of ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, maleic anhydride grafted metallocene polyethylene and linear low density polyethylene.
4. The halogen-free flame-retardant modified cable material according to claim 1, wherein: the halogen-free inorganic flame retardant is a mixture of aluminum hydroxide and magnesium hydroxide, wherein the aluminum hydroxide accounts for 40-45% of the mixture, the balance is magnesium hydroxide, and the magnesium hydroxide is superfine magnesium hydroxide with activated surface.
5. The halogen-free flame-retardant modified cable material according to claim 1, wherein: the synergistic flame retardant is one of carbon nano tubes, antimony trioxide or aluminum tripolyphosphate.
6. The halogen-free flame-retardant modified cable material according to claim 1, wherein: the antioxidant is one of 2, 6-di-tert-butyl-4-methylphenol, beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate or tris (2, 4-di-tert-butylphenyl) phosphite.
7. The halogen-free flame-retardant modified cable material according to claim 1, wherein: the processing aid is one or more of stearic acid, organic montmorillonite, kaolin, organic silicone oil and paraffin.
8. The halogen-free flame-retardant modified cable material according to claim 1, wherein: the anti-aging agent is one of N-phenyl-N '-isopropyl-p-phenylenediamine, N-N' -diphenyl-p-phenylenediamine or N-phenyl-beta-naphthylamine.
9. The method for preparing the halogen-free flame-retardant modified cable material according to any one of claims 1 to 8, comprising the steps of: the method comprises the following steps:
(1) firstly weighing ammonium polyphosphate and ethylene-vinyl acetate copolymer according to the weight parts, carrying out melt blending in a rheometer to prepare master batch, uniformly mixing the master batch and pentaerythritol, and mixing the master batch and the pentaerythritol in the rheometer at 135 ℃ and 260 ℃ for 310 rpm for 10-15 minutes to prepare modified pentaerythritol;
(2) weighing the rest components in parts by weight, firstly mixing the polyolefin resin, the halogen-free inorganic flame retardant and the processing aid in a rotary mixer at the temperature of 130-;
(3) conveying the mixed material obtained in the step (2) to a double-screw extruder through a double-cone feeding system, and finally, conveying the mixed material to a single screw for extrusion granulation to obtain a cable material, and extruding the obtained cable material to cover the outer layer of the conductor to obtain a cable to be irradiated;
(4) carrying out radiation crosslinking on the cable to be irradiated obtained in the step (3), wherein the radiation source is gamma60Co, source strength 3.5x1015~3.7x1015Bq, at room temperature, N2Irradiating the cable to be irradiated for 2-4 times under the atmosphere with the irradiation dose of 10-12kGy/h, wherein the irradiation time is 2-2.5h each time, and finally obtaining the halogen-free flame-retardant modified cable material.
10. The preparation method of the halogen-free flame-retardant modified cable material according to claim 9, wherein the preparation method comprises the following steps: the temperature of the first zone to the seventh zone of the double-screw extruder in the step (3) is set to be 100-105 ℃ from the first zone to the second zone and 95-100 ℃ from the third zone to the seventh zone; the temperature of the single screw extruder is set to be 105-110 ℃ in the first zone, 115-120 ℃ in the second zone, 125-130 ℃ in the third zone, 135-140 ℃ at the head and 145-150 ℃ at the hot die cutting surface.
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| CN202111496588.0A CN114058110A (en) | 2021-12-09 | 2021-12-09 | Halogen-free flame-retardant modified cable material and preparation method thereof |
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| CN202111496588.0A CN114058110A (en) | 2021-12-09 | 2021-12-09 | Halogen-free flame-retardant modified cable material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285082A (en) * | 2023-03-22 | 2023-06-23 | 江苏益帆高分子材料有限公司 | Low-smoke halogen-free cable material with rubber improving irradiation crosslinking physical property and preparation method thereof |
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2021
- 2021-12-09 CN CN202111496588.0A patent/CN114058110A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285082A (en) * | 2023-03-22 | 2023-06-23 | 江苏益帆高分子材料有限公司 | Low-smoke halogen-free cable material with rubber improving irradiation crosslinking physical property and preparation method thereof |
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