CN110791026A - Halogen-free flame-retardant low-density cable material for aluminum alloy cable - Google Patents
Halogen-free flame-retardant low-density cable material for aluminum alloy cable Download PDFInfo
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- CN110791026A CN110791026A CN201911131347.9A CN201911131347A CN110791026A CN 110791026 A CN110791026 A CN 110791026A CN 201911131347 A CN201911131347 A CN 201911131347A CN 110791026 A CN110791026 A CN 110791026A
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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
- 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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- 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
- H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The invention discloses a halogen-free flame-retardant low-density cable material for an aluminum alloy cable, which comprises the following raw material components in parts by weight: 70-80 parts of ethylene propylene diene monomer, 35-45 parts of chloroprene rubber, 12-16 parts of carbon microsphere powder, 8-12 parts of magnesium hydroxide, 15-20 parts of ammonium polyphosphate, 2-4 parts of polyphenyl ether, 1-3 parts of antioxidant, 2-3 parts of plasticizer and 1-2 parts of cross-linking agent. The cable material adopts the ethylene propylene diene monomer rubber as a main body, so that the softness, high and low temperature resistance, ozone resistance and aging resistance of the cable material are ensured, the light weight of the cable material can be reduced, the mechanical property of the cable material is further enhanced by assisting the chloroprene rubber in use, the tensile strength and the elongation are ensured, the halogen-free flame retardant components of the carbon microsphere powder, the magnesium hydroxide and the ammonium polyphosphate are used as flame retardants in the flame retardant aspect, the flame retardant effect is cooperatively exerted, the material is easy to obtain, the preparation method is simple, the large-scale mechanical production process is met, and the cable material has better economic value and market prospect.
Description
Technical Field
The invention belongs to the technical field of cable materials, and particularly relates to a halogen-free flame-retardant low-density cable material for an aluminum alloy cable.
Background
With the rapid development of the wire and cable industry, the demand of the wire and cable is gradually increased, and the application is more and more extensive, wherein the aluminum alloy cable is a novel material power cable which takes an aluminum alloy material as a conductor and adopts advanced technologies such as a special roll forming molded line stranding production process and annealing treatment, and the novel material power cable has good mechanical property and electrical property, and can be widely applied to various fields of national economy.
With the increasing demand of the cables for the matching cable materials, the usage amount and conductivity of the cables are greatly increased with the development of the technology, which requires the improvement of the cable materials in performance, especially in density and flame retardance, to meet the increasing requirements of the cables. The existing bamboo willow material adopts polyvinyl chloride and polyolefin as insulating materials, the bending performance of the manufactured cable is poor due to the high hardness of the insulating materials, and meanwhile, the cable breakdown is easily caused by the mechanical stress in the insulating layer caused by excessive bending, so that great potential safety hazards are caused. Ethylene propylene diene monomer is a copolymer of ethylene, propylene and a small amount of non-conjugated diene, is one of ethylene propylene rubbers, has excellent electrical insulation, moisture resistance, heat resistance, cold resistance and aging resistance because the main chain of the ethylene propylene diene monomer is composed of chemically stable saturated hydrocarbon and only contains unsaturated double bonds in the side chain, and is widely applied to the preparation of wires and cables in recent years.
The cable mainly has halogen system and phosphorus system in the aspect of flame retardance, the traditional halogen system flame retardant has excellent flame retardance and smoke suppression effects, but generates a large amount of toxic gas in the combustion process, harms human health and ecological environment, introduces an environment-friendly, halogen-free and efficient flame retardant into a cable material in order to adapt to a new standard of development, and is of great importance to the development of the cable material.
Disclosure of Invention
The invention aims to make up the defects of the prior art and provides a halogen-free flame-retardant low-density cable material for an aluminum alloy cable.
In order to achieve the above object, the present invention provides the following technical solutions:
a halogen-free flame-retardant low-density cable material for an aluminum alloy cable comprises the following raw material components in parts by weight: 70-80 parts of ethylene propylene diene monomer, 35-45 parts of chloroprene rubber, 12-16 parts of carbon microsphere powder, 8-12 parts of magnesium hydroxide, 15-20 parts of ammonium polyphosphate, 2-4 parts of polyphenyl ether, 1-3 parts of antioxidant, 2-3 parts of plasticizer and 1-2 parts of cross-linking agent.
The carbon microsphere powder is prepared by the following steps:
(1) completely dissolving glucose in water, reacting the obtained solution in a high-pressure reaction furnace, cooling to room temperature, carrying out suction filtration, washing with water until the filtrate is clear for later use;
(2) and (3) drying the filtrate in an oven at the temperature of 120-150 ℃ to obtain carbon microspheres with the diameter of 500-1000nm, and then performing ball milling by using a ball mill to obtain carbon microsphere powder.
Preferably, the reaction temperature of the high-pressure reaction furnace in the step 1 is 250-350 ℃, and the reaction time is 6-10 hours.
Further, the antioxidant is a mixture formed by mixing pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and dilauryl thiodipropionate according to a weight ratio of 3: 5.
Further, the plasticizer is diisodecyl phthalate.
Further, the cross-linking agent is ethoxylated trimethylolpropane triacrylate and dicumyl peroxide according to the weight ratio of 2: 3 mixing the resulting mixture.
The preparation method of the halogen-free flame-retardant low-density cable material for the aluminum alloy cable comprises the following steps:
(1) putting the ethylene propylene diene monomer, the chloroprene rubber, the carbon microsphere powder, the magnesium hydroxide, the ammonium polyphosphate and the plasticizer into an internal mixer according to the weight ratio of the raw materials, and plastifying at the temperature of 150-;
(2) adding polyphenyl ether, an antioxidant and a cross-linking agent into the internal mixer, mixing the mixture with the plasticated material uniformly, and then mixing for 15-25 minutes at the temperature of 120-;
(3) and (3) feeding the mixed materials into a double-screw extruder, and extruding and granulating to obtain the cable material.
The outlet temperature of the double-screw extruder in the step 3 of the preparation method is controlled to be 160-170 ℃.
The invention has the advantages that:
1. the cable material adopts the ethylene propylene diene monomer rubber as a main body, so that the softness, high and low temperature resistance, ozone resistance and aging resistance of the cable material are ensured, the weight of the cable material can be reduced due to the characteristic of light weight, the mechanical property of the cable material is further enhanced by the aid of the chloroprene rubber, and the tensile strength and the elongation are ensured.
2. The cable material of the invention uses the halogen-free flame retardant components of carbon microsphere powder, magnesium hydroxide and ammonium polyphosphate as flame retardants to cooperatively play a flame retardant role, wherein carbon microsphere powder can form a carbon layer on the surface of the rubber substrate after being heated and combusted, oxygen and heat on the surface of the substrate are prevented from entering, the magnesium hydroxide releases combined water when being heated and decomposed, a large amount of latent heat is absorbed, the surface temperature of the material in flame is reduced, ammonia and water generated in the combustion process of ammonium polyphosphate dilute combustible gas, the composite material has the advantages that the composite material has an inhibiting effect on generated smoke, when the material is combusted, the ammonium polyphosphate is decomposed to generate a large amount of ammonia gas, so that a large amount of holes are formed on the surface of carbon residue formed by combusting an outer layer material, the carbon microsphere powder has the effect of enhancing a carbon layer, the inner layer of the material is more compact than the outer layer, and the structure with the outer sparse layer and the inner dense layer is matched with the cooling effect of magnesium hydroxide to achieve the double flame-retardant effects of flame retardance and smoke inhibition.
3. The material is easy to obtain, the preparation method is simple, the large-scale mechanical production process is met, and the economic value and the market prospect are better.
Detailed Description
The technical scheme of the invention is further explained by combining the specific examples as follows:
example 1
A halogen-free flame-retardant low-density cable material for an aluminum alloy cable comprises the following raw material components in parts by weight: 70 parts of ethylene propylene diene monomer, 35 parts of chloroprene rubber, 12 parts of carbon microsphere powder, 8 parts of magnesium hydroxide, 15 parts of ammonium polyphosphate, 2 parts of polyphenyl ether, 1 part of antioxidant, 2 parts of diisodecyl phthalate and 1 part of cross-linking agent.
The carbon microsphere powder is prepared by the following steps:
(1) completely dissolving glucose in water, reacting the obtained solution in a high-pressure reaction furnace at 250 ℃ for 6 hours, cooling to room temperature, carrying out suction filtration, washing with water until the filtrate is clear for later use;
(2) and (3) drying the filtrate in an oven at 120 ℃ to obtain carbon microspheres with the diameter of 500-1000nm, and then performing ball milling by using a ball mill to obtain carbon microsphere powder.
The antioxidant is a mixture formed by mixing pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and dilauryl thiodipropionate according to a weight ratio of 3: 5.
The cross-linking agent is ethoxylated trimethylolpropane triacrylate and dicumyl peroxide according to the weight ratio of 2: 3 mixing the resulting mixture.
The preparation method of the halogen-free flame-retardant low-density cable material for the aluminum alloy cable comprises the following steps:
(1) putting ethylene propylene diene monomer, chloroprene rubber, carbon microsphere powder, magnesium hydroxide, ammonium polyphosphate and diisodecyl phthalate into an internal mixer according to the weight ratio of the raw materials, and plastifying for 15 minutes at 150 ℃ to obtain a plastified material;
(2) adding polyphenyl ether, an antioxidant and a cross-linking agent into an internal mixer, mixing the mixture with a plasticated material uniformly, and then mixing for 25 minutes at 120 ℃ to obtain a mixed material;
(3) and (3) feeding the mixed materials into a double-screw extruder, controlling the outlet temperature to be 160 ℃, and performing extrusion granulation to obtain the cable material.
Example 2
A halogen-free flame-retardant low-density cable material for an aluminum alloy cable comprises the following raw material components in parts by weight: 80 parts of ethylene propylene diene monomer, 45 parts of chloroprene rubber, 16 parts of carbon microsphere powder, 12 parts of magnesium hydroxide, 20 parts of ammonium polyphosphate, 4 parts of polyphenyl ether, 3 parts of antioxidant, 3 parts of diisodecyl phthalate and 2 parts of cross-linking agent.
The carbon microsphere powder is prepared by the following steps:
(1) completely dissolving glucose in water, reacting the obtained solution in a high-pressure reaction furnace at 350 ℃ for 6 hours, cooling to room temperature, carrying out suction filtration, washing with water until the filtrate is clear for later use;
(2) and (3) drying the filtrate in an oven at 150 ℃ to obtain carbon microspheres with the diameter of 500-1000nm, and then performing ball milling by using a ball mill to obtain carbon microsphere powder.
The antioxidant is a mixture formed by mixing pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and dilauryl thiodipropionate according to a weight ratio of 3: 5.
The cross-linking agent is ethoxylated trimethylolpropane triacrylate and dicumyl peroxide according to the weight ratio of 2: 3 mixing the resulting mixture.
The preparation method of the halogen-free flame-retardant low-density cable material for the aluminum alloy cable comprises the following steps:
(1) putting ethylene propylene diene monomer, chloroprene rubber, carbon microsphere powder, magnesium hydroxide, ammonium polyphosphate and diisodecyl phthalate into an internal mixer according to the weight ratio of the raw materials, and plastifying for 10 minutes at 180 ℃ to obtain a plastified material;
(2) adding polyphenyl ether, an antioxidant and a cross-linking agent into an internal mixer, mixing the mixture with a plasticated material uniformly, and then mixing for 15 minutes at 150 ℃ to obtain a mixed material;
(3) and (3) feeding the mixed materials into a double-screw extruder, controlling the outlet temperature to be 170 ℃, and performing extrusion granulation to obtain the cable material.
Example 3
A halogen-free flame-retardant low-density cable material for an aluminum alloy cable comprises the following raw material components in parts by weight: 75 parts of ethylene propylene diene monomer, 40 parts of chloroprene rubber, 14 parts of carbon microsphere powder, 10 parts of magnesium hydroxide, 18 parts of ammonium polyphosphate, 3 parts of polyphenyl ether, 2 parts of antioxidant, 3 parts of diisodecyl phthalate and 1 part of cross-linking agent.
The carbon microsphere powder is prepared by the following steps:
(1) completely dissolving glucose in water, reacting the obtained solution in a high-pressure reaction furnace at 300 ℃ for 8 hours, cooling to room temperature, carrying out suction filtration, washing with water until the filtrate is clear for later use;
(2) and (3) drying the filtrate in an oven at 135 ℃ to obtain carbon microspheres with the diameter of 500-1000nm, and then performing ball milling by using a ball mill to obtain carbon microsphere powder.
The antioxidant is a mixture formed by mixing pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and dilauryl thiodipropionate according to a weight ratio of 3: 5.
The cross-linking agent is ethoxylated trimethylolpropane triacrylate and dicumyl peroxide according to the weight ratio of 2: 3 mixing the resulting mixture.
The preparation method of the halogen-free flame-retardant low-density cable material for the aluminum alloy cable comprises the following steps:
(1) putting ethylene propylene diene monomer, chloroprene rubber, carbon microsphere powder, magnesium hydroxide, ammonium polyphosphate and diisodecyl phthalate into an internal mixer according to the weight ratio of the raw materials, and plastifying at 165 ℃ for 13 minutes to obtain a plastified material;
(2) adding polyphenyl ether, an antioxidant and a cross-linking agent into an internal mixer, mixing the mixture with the plasticated material uniformly, and then mixing for 20 minutes at 135 ℃ to obtain a mixed material;
(3) and (3) feeding the mixed materials into a double-screw extruder, controlling the outlet temperature to be 165 ℃, and performing extrusion granulation to obtain the cable material.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (8)
1. The halogen-free flame-retardant low-density cable material for the aluminum alloy cable is characterized by comprising the following raw material components in parts by weight: 70-80 parts of ethylene propylene diene monomer, 35-45 parts of chloroprene rubber, 12-16 parts of carbon microsphere powder, 8-12 parts of magnesium hydroxide, 15-20 parts of ammonium polyphosphate, 2-4 parts of polyphenyl ether, 1-3 parts of antioxidant, 2-3 parts of plasticizer and 1-2 parts of cross-linking agent.
2. The halogen-free flame-retardant low-density cable material for the aluminum alloy cable according to claim 1, wherein the carbon microsphere powder is prepared by the following steps:
(1) completely dissolving glucose in water, reacting the obtained solution in a high-pressure reaction furnace, cooling to room temperature, carrying out suction filtration, washing with water until the filtrate is clear for later use;
(2) and (3) drying the filtrate in an oven at the temperature of 120-150 ℃ to obtain carbon microspheres with the diameter of 500-1000nm, and then performing ball milling by using a ball mill to obtain carbon microsphere powder.
3. The halogen-free flame-retardant low-density cable material for the aluminum alloy cable as recited in claim 2, wherein the reaction temperature of the high-pressure reaction furnace in the step 1 is 250-350 ℃, and the reaction time is 6-10 hours.
4. The halogen-free flame-retardant low-density cable material for the aluminum alloy cable as claimed in claim 1, wherein the antioxidant is a mixture of pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and dilauryl thiodipropionate mixed in a weight ratio of 3: 5.
5. The halogen-free flame-retardant low-density cable material for the aluminum alloy cable as claimed in claim 1, wherein the plasticizer is diisodecyl phthalate.
6. The halogen-free flame-retardant low-density cable material for the aluminum alloy cable according to claim 1, wherein the cross-linking agent is ethoxylated trimethylolpropane triacrylate and dicumyl peroxide in a weight ratio of 2: 3 mixing the resulting mixture.
7. The preparation method of the halogen-free flame-retardant low-density cable material for the aluminum alloy cable according to any one of claims 1 to 6, characterized by comprising the following steps:
(1) putting the ethylene propylene diene monomer, the chloroprene rubber, the carbon microsphere powder, the magnesium hydroxide, the ammonium polyphosphate and the plasticizer into an internal mixer according to the weight ratio of the raw materials, and plastifying at the temperature of 150-;
(2) adding polyphenyl ether, an antioxidant and a cross-linking agent into the internal mixer, mixing the mixture with the plasticated material uniformly, and then mixing for 15-25 minutes at the temperature of 120-;
(3) and (3) feeding the mixed materials into a double-screw extruder, and extruding and granulating to obtain the cable material.
8. The method for preparing the halogen-free flame retardant low-density cable material for the aluminum alloy cable as claimed in claim 6, wherein the outlet temperature of the twin-screw extruder in the step 3 is controlled to be 160-170 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911131347.9A CN110791026A (en) | 2019-11-19 | 2019-11-19 | Halogen-free flame-retardant low-density cable material for aluminum alloy cable |
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| CN201911131347.9A CN110791026A (en) | 2019-11-19 | 2019-11-19 | Halogen-free flame-retardant low-density cable material for aluminum alloy cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116987349A (en) * | 2023-09-25 | 2023-11-03 | 南方珠江科技有限公司 | Halogen-free flame-retardant cable material for aluminum alloy cable |
| CN117004111A (en) * | 2023-07-16 | 2023-11-07 | 双登电缆股份有限公司 | Halogen-free flame-retardant cable material for aluminum alloy cable and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117004111A (en) * | 2023-07-16 | 2023-11-07 | 双登电缆股份有限公司 | Halogen-free flame-retardant cable material for aluminum alloy cable and preparation method thereof |
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Application publication date: 20200214 |