CN111423654A - Flame-retardant insulated cable material - Google Patents
Flame-retardant insulated cable material Download PDFInfo
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- CN111423654A CN111423654A CN202010385030.4A CN202010385030A CN111423654A CN 111423654 A CN111423654 A CN 111423654A CN 202010385030 A CN202010385030 A CN 202010385030A CN 111423654 A CN111423654 A CN 111423654A
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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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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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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- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- 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
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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- Polymers & Plastics (AREA)
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Abstract
The invention discloses a flame-retardant insulated cable material, which belongs to the field of wear-resistant materials and comprises the following raw materials in parts by weight: 50-56 parts of metallocene linear low-density polyethylene, 40-45 parts of ethylene-vinyl acetate copolymer, 3-5 parts of nano calcium carbonate, 1-7 parts of zinc stearate, 18-20 parts of talcum powder, 10-12 parts of polysiloxane, 2-5 parts of compatilizer, 50-70 parts of flame retardant, 3-6 parts of lubricant and 1-3 parts of antioxidant, wherein the flame retardant consists of 10-13 parts of zinc borate, 15-18 parts of triphenyl phosphate, 20-25 parts of melamine cyanurate and 0.05-0.1 part of polyvinylpyrrolidone. The flame-retardant insulated cable material provided by the invention greatly reduces the using amount of an inorganic flame retardant, and the obtained cable material can pass a VW-1 level vertical combustion test and is not easy to precipitate.
Description
Technical Field
The invention relates to the field of cable materials, in particular to a flame-retardant insulating cable material.
Background
With the development of economy and the enhancement of environmental awareness of people, the requirements of various fields on the quality and the performance of electric wires and cables are higher and higher. The traditional halogen-containing cable material is gradually replaced by halogen-free low-smoke cable material due to the large combustion smoke amount and the generation of toxic carcinogenic substances. The existing halogen-free low-smoke cable material is required to achieve a good flame retardant effect, and the inorganic flame retardant is at least required to be added to more than 60%, so that the mechanical property of the cable material can be greatly reduced, and the extrusion performance is influenced. Particularly, when the cable material is used for electric wires, the flame retardance does not pass a VW-1 vertical burning test. If a large amount of phosphorus-nitrogen intumescent flame retardant is added to achieve better flame retardant performance, the addition amount is large, the cost is high, the phosphorus-nitrogen intumescent flame retardant is easy to separate out, and the flame retardant performance is greatly influenced.
Disclosure of Invention
The invention aims to provide a flame-retardant insulated cable material, which greatly reduces the using amount of an inorganic flame retardant, and the obtained cable material can pass a VW-1 level vertical combustion test and is difficult to separate out.
In order to achieve the purpose, the invention provides the following technical scheme:
a flame-retardant insulated cable material comprises the following raw materials in parts by weight: 50-56 parts of metallocene linear low-density polyethylene, 40-45 parts of ethylene-vinyl acetate copolymer, 3-5 parts of nano calcium carbonate, 1-7 parts of zinc stearate, 18-20 parts of talcum powder, 10-12 parts of polysiloxane, 2-5 parts of compatilizer, 50-70 parts of flame retardant, 3-6 parts of lubricant and 1-3 parts of antioxidant, wherein the flame retardant consists of 10-13 parts of zinc borate, 15-18 parts of triphenyl phosphate, 20-25 parts of melamine cyanurate and 0.05-0.1 part of polyvinylpyrrolidone.
Preferably, the flame-retardant insulating cable material comprises the following raw materials in parts by weight: 53 parts of metallocene linear low-density polyethylene, 42 parts of ethylene-vinyl acetate copolymer, 4 parts of nano calcium carbonate, 3 parts of zinc stearate, 18 parts of talcum powder, 12 parts of polysiloxane, 3 parts of compatilizer, 60 parts of flame retardant, 5 parts of lubricant and 2 parts of antioxidant.
Preferably, the flame retardant consists of 11 parts of zinc borate, 17 parts of triphenyl phosphate, 23 parts of melamine cyanurate, and 0.07 part of polyvinylpyrrolidone.
Preferably, the compatibilizer is maleic anhydride grafted polyethylene.
Preferably, the lubricant is methyl silicone oil.
Preferably, the antioxidant is distearyl thiodipropionate.
Preferably, the preparation method of the flame-retardant insulated cable material comprises the following steps:
(1) weighing raw materials in corresponding parts by weight for later use;
(2) putting zinc borate, triphenyl phosphate, melamine cyanurate and polyvinylpyrrolidone into a high-speed stirrer, stirring for 30-50min, then putting into a heat preservation furnace, and preserving heat for 2-4h at 25-30 ℃ to obtain a flame retardant;
(3) adding metallocene linear low density polyethylene, nano calcium carbonate, zinc stearate, talcum powder, compatilizer, lubricant and antioxidant into a high-speed mixer, mixing for 20-30min, adding ethylene-vinyl acetate copolymer, flame retardant and polysiloxane, and continuously mixing for 15-20min to obtain a mixture;
(4) placing the mixture into a kneading machine with the temperature of 120-130 ℃ for kneading for 15min to obtain a kneaded raw material;
(5) and extruding and granulating the mixed raw materials by adopting a double-stage extruder with the cylinder temperature of 150 ℃ to obtain the flame-retardant insulated cable material.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the invention, through compounding of the flame retardant, the using amount of the inorganic flame retardant is greatly reduced, and the obtained cable material can pass a VW-1 level vertical combustion test and is not easy to separate out;
2) the tensile strength of the cable material is more than or equal to 16MPa, and the elongation at break is more than 207%;
3) the flame retardant property of the cable material provided by the invention passes a 1.6mmU L94V-0 level vertical burning test.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 1
A flame-retardant insulated cable material comprises the following raw materials in parts by weight: 50 parts of metallocene linear low-density polyethylene, 40 parts of ethylene-vinyl acetate copolymer, 3 parts of nano calcium carbonate, 1 part of zinc stearate, 18 parts of talcum powder, 10 parts of polysiloxane, 2 parts of compatilizer, 50 parts of flame retardant, 3 parts of lubricant and 1 part of antioxidant, wherein the flame retardant consists of 10 parts of zinc borate, 15 parts of triphenyl phosphate, 20 parts of melamine cyanurate and 0.05 part of polyvinylpyrrolidone. The compatilizer is maleic anhydride grafted polyethylene, the lubricant is methyl silicone oil, and the antioxidant is distearyl thiodipropionate.
A preparation method of a flame-retardant insulated cable material comprises the following steps:
(1) weighing raw materials in corresponding parts by weight for later use;
(2) putting zinc borate, triphenyl phosphate, melamine cyanurate and polyvinylpyrrolidone into a high-speed stirrer, stirring for 30min, then putting into a heat preservation furnace, and preserving heat for 2h at 25 ℃ to obtain a flame retardant;
(3) mixing metallocene linear low density polyethylene, nano calcium carbonate, zinc stearate, talcum powder, compatilizer, lubricant and antioxidant in a high-speed mixer for 20min, adding ethylene-vinyl acetate copolymer, flame retardant and polysiloxane, and continuously mixing for 15min to obtain a mixture;
(4) placing the mixture into a kneading machine with the temperature of 120 ℃ for kneading for 15min to obtain a kneaded raw material;
(5) and extruding and granulating the mixed raw materials by adopting a double-stage extruder with the cylinder temperature of 150 ℃ to obtain the flame-retardant insulated cable material.
Example 2
A flame-retardant insulated cable material comprises the following raw materials in parts by weight: 53 parts of metallocene linear low-density polyethylene, 42 parts of ethylene-vinyl acetate copolymer, 4 parts of nano calcium carbonate, 3 parts of zinc stearate, 18 parts of talcum powder, 12 parts of polysiloxane, 3 parts of compatilizer, 60 parts of flame retardant, 5 parts of lubricant and 2 parts of antioxidant. The flame retardant consists of 11 parts of zinc borate, 17 parts of triphenyl phosphate, 23 parts of melamine cyanurate and 0.07 part of polyvinylpyrrolidone. The compatilizer is maleic anhydride grafted polyethylene, the lubricant is methyl silicone oil, and the antioxidant is distearyl thiodipropionate.
A preparation method of a flame-retardant insulated cable material comprises the following steps:
(1) weighing raw materials in corresponding parts by weight for later use;
(2) putting zinc borate, triphenyl phosphate, melamine cyanurate and polyvinylpyrrolidone into a high-speed stirrer, stirring for 40min, then putting into a heat preservation furnace, and preserving heat for 3h at 27 ℃ to obtain a flame retardant;
(3) mixing metallocene linear low density polyethylene, nano calcium carbonate, zinc stearate, talcum powder, compatilizer, lubricant and antioxidant in a high-speed mixer for 25min, adding ethylene-vinyl acetate copolymer, flame retardant and polysiloxane, and continuously mixing for 17min to obtain a mixture;
(4) placing the mixture into a kneading machine with the temperature of 125 ℃ for kneading for 15min to obtain a kneaded raw material;
(5) and extruding and granulating the mixed raw materials by adopting a double-stage extruder with the cylinder temperature of 150 ℃ to obtain the flame-retardant insulated cable material.
Example 3
A flame-retardant insulated cable material comprises the following raw materials in parts by weight: 56 parts of metallocene linear low-density polyethylene, 45 parts of ethylene-vinyl acetate copolymer, 5 parts of nano calcium carbonate, 7 parts of zinc stearate, 20 parts of talcum powder, 12 parts of polysiloxane, 5 parts of compatilizer, 70 parts of flame retardant, 6 parts of lubricant and 3 parts of antioxidant, wherein the flame retardant consists of 13 parts of zinc borate, 18 parts of triphenyl phosphate, 25 parts of melamine cyanurate and 0.1 part of polyvinylpyrrolidone. The compatilizer is maleic anhydride grafted polyethylene, the lubricant is methyl silicone oil, and the antioxidant is distearyl thiodipropionate.
A preparation method of a flame-retardant insulated cable material comprises the following steps:
(1) weighing raw materials in corresponding parts by weight for later use;
(2) putting zinc borate, triphenyl phosphate, melamine cyanurate and polyvinylpyrrolidone into a high-speed stirrer, stirring for 50min, then putting into a heat preservation furnace, and preserving heat for 4h at 30 ℃ to obtain a flame retardant;
(3) adding metallocene linear low density polyethylene, nano calcium carbonate, zinc stearate, talcum powder, compatilizer, lubricant and antioxidant into a high-speed mixer, mixing for 30min, adding ethylene-vinyl acetate copolymer, flame retardant and polysiloxane, and continuously mixing for 0min to obtain a mixture;
(4) placing the mixture into a kneading machine with the temperature of 130 ℃ for kneading for 15min to obtain a kneaded raw material;
(5) and extruding and granulating the mixed raw materials by adopting a double-stage extruder with the cylinder temperature of 150 ℃ to obtain the flame-retardant insulated cable material.
Comparative example 1
Comparative example 1 differs from example 2 in that: the flame retardant consists of 51 parts of zinc borate and 0.07 part of polyvinylpyrrolidone.
Comparative example 2
Comparative example 2 differs from example 2 in that: the flame retardant consists of 22 parts of triphenyl phosphate, 29 parts of melamine cyanurate and 0.07 part of polyvinylpyrrolidone.
Comparative example 3
Comparative example 3 differs from example 2 in that: the flame retardant consists of 11 parts of zinc borate, 17 parts of triphenyl phosphate and 23 parts of melamine cyanurate.
The properties of the cable materials prepared in examples 1 to 3 and comparative examples 1 to 3 were tested and the following data were obtained:
the foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.
Claims (7)
1. The flame-retardant insulated cable material is characterized by comprising the following raw materials in parts by weight: 50-56 parts of metallocene linear low-density polyethylene, 40-45 parts of ethylene-vinyl acetate copolymer, 3-5 parts of nano calcium carbonate, 1-7 parts of zinc stearate, 18-20 parts of talcum powder, 10-12 parts of polysiloxane, 2-5 parts of compatilizer, 50-70 parts of flame retardant, 3-6 parts of lubricant and 1-3 parts of antioxidant, wherein the flame retardant consists of 10-13 parts of zinc borate, 15-18 parts of triphenyl phosphate, 20-25 parts of melamine cyanurate and 0.05-0.1 part of polyvinylpyrrolidone.
2. The flame-retardant insulated cable material according to claim 1, characterized by comprising the following raw materials in parts by weight: 53 parts of metallocene linear low-density polyethylene, 42 parts of ethylene-vinyl acetate copolymer, 4 parts of nano calcium carbonate, 3 parts of zinc stearate, 18 parts of talcum powder, 12 parts of polysiloxane, 3 parts of compatilizer, 60 parts of flame retardant, 5 parts of lubricant and 2 parts of antioxidant.
3. The flame-retardant insulated cable material according to claim 2, wherein: the flame retardant consists of 11 parts of zinc borate, 17 parts of triphenyl phosphate, 23 parts of melamine cyanurate and 0.07 part of polyvinylpyrrolidone.
4. The flame-retardant insulated cable material according to claim 1, wherein: the compatilizer is maleic anhydride grafted polyethylene.
5. The flame-retardant insulated cable material according to claim 1, wherein: the lubricant is methyl silicone oil.
6. The flame-retardant insulated cable material according to claim 1, wherein: the antioxidant is distearyl thiodipropionate.
7. The method for preparing a flame retardant insulated cable material according to any one of claims 1 to 6, characterized by comprising the steps of:
(1) weighing raw materials in corresponding parts by weight for later use;
(2) putting zinc borate, triphenyl phosphate, melamine cyanurate and polyvinylpyrrolidone into a high-speed stirrer, stirring for 30-50min, then putting into a heat preservation furnace, and preserving heat for 2-4h at 25-30 ℃ to obtain a flame retardant;
(3) adding metallocene linear low density polyethylene, nano calcium carbonate, zinc stearate, talcum powder, compatilizer, lubricant and antioxidant into a high-speed mixer, mixing for 20-30min, adding ethylene-vinyl acetate copolymer, flame retardant and polysiloxane, and continuously mixing for 15-20min to obtain a mixture;
(4) placing the mixture into a kneading machine with the temperature of 120-130 ℃ for kneading for 15min to obtain a kneaded raw material;
(5) and extruding and granulating the mixed raw materials by adopting a double-stage extruder with the cylinder temperature of 150 ℃ to obtain the flame-retardant insulated cable material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010385030.4A CN111423654A (en) | 2020-05-09 | 2020-05-09 | Flame-retardant insulated cable material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010385030.4A CN111423654A (en) | 2020-05-09 | 2020-05-09 | Flame-retardant insulated cable material |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1886438A (en) * | 2003-12-02 | 2006-12-27 | 帝斯曼知识产权资产管理有限公司 | Flame retardant radiation curable compositions |
| CN102731891A (en) * | 2012-06-20 | 2012-10-17 | 苏州德尔泰高聚物有限公司 | Thermoplastic oil-resistant halogen-free low-smoke flame-retardant polyolefin cable material and preparation method thereof |
| CN106750708A (en) * | 2016-12-07 | 2017-05-31 | 安徽合聚阻燃新材料股份有限公司 | A kind of phosphorus nitrogen compounds flame resistance irradiation crosslinked halogen-free low smoke cables material |
| CN110099955A (en) * | 2016-12-22 | 2019-08-06 | 帝斯曼知识产权资产管理有限公司 | Improved heat resistance, resistive thermoplastic resin composition |
-
2020
- 2020-05-09 CN CN202010385030.4A patent/CN111423654A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1886438A (en) * | 2003-12-02 | 2006-12-27 | 帝斯曼知识产权资产管理有限公司 | Flame retardant radiation curable compositions |
| CN102731891A (en) * | 2012-06-20 | 2012-10-17 | 苏州德尔泰高聚物有限公司 | Thermoplastic oil-resistant halogen-free low-smoke flame-retardant polyolefin cable material and preparation method thereof |
| CN106750708A (en) * | 2016-12-07 | 2017-05-31 | 安徽合聚阻燃新材料股份有限公司 | A kind of phosphorus nitrogen compounds flame resistance irradiation crosslinked halogen-free low smoke cables material |
| CN110099955A (en) * | 2016-12-22 | 2019-08-06 | 帝斯曼知识产权资产管理有限公司 | Improved heat resistance, resistive thermoplastic resin composition |
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