CN104530519A - Halogen-free low-smoke fire-resistant cable material, and preparation method thereof - Google Patents

Halogen-free low-smoke fire-resistant cable material, and preparation method thereof Download PDF

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CN104530519A
CN104530519A CN201410675451.5A CN201410675451A CN104530519A CN 104530519 A CN104530519 A CN 104530519A CN 201410675451 A CN201410675451 A CN 201410675451A CN 104530519 A CN104530519 A CN 104530519A
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free low
cable material
halide
mixture
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CN104530519B (en
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韩志东
王春锋
王永亮
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JIANGYIN YUANDA ELECTRICAL MATERIAL Co.,Ltd.
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Harbin University of Science and Technology
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethene
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/08Copolymers of ethene
    • C08L23/0846Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853Vinylacetate
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30Insulators 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
    • H01B3/44Insulators 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
    • H01B3/441Insulators 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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    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/02Flame or fire retardant/resistant
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08L2201/22Halogen free composition
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    • C08L2203/00Applications
    • C08L2203/20Applications use in electrical or conductive gadgets
    • C08L2203/202Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer 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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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00Properties characterising the ingredient of the composition
    • C08L2207/06Properties of polyethylene
    • C08L2207/066LDPE (radical process)

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Abstract

The invention discloses a halogen-free low-smoke fire-resistant cable material, and a preparation method thereof. The halogen-free low-smoke fire-resistant cable material is used for solving problems of conventional cable materials that great harm are caused for escapees and rescuers, and environmental pollution is also caused by large amount of toxic smoke and corrosive gas generated in combustion of conventional flame-resistant cable in fire. The halogen-free low-smoke fire-resistant cable material is composed of a polyolefin, a fire retardant, a char-forming catalyst, a nano synergistic fire retardant, a filler, a lubricant, and an anti-oxidant; or is composed of a polyolefin, a fire retardant, a char-forming catalyst, a nano synergistic fire retardant, a filler, a lubricant, a compatilizer, a silane coupling agent, and an anti-oxidant. The preparation method comprises following steps: step 1, material weighing; step 2, mixing; step 3, kneading using a kneading machine; and step 4, extruding granulation, and obtaining of the halogen-free low-smoke fire-resistant cable material. The halogen-free low-smoke fire-resistant cable material is excellent in flame resistance, low in smoke, and excellent in mechanical properties; and the preparation method is simple.

Description

A kind of halide-free low-smoke fireproof cable material and preparation method thereof
Technical field
The present invention relates to a kind of CABLE MATERIALS and preparation method thereof.
Background technology
Supply of electric power has become the indispensable part of world economy develop rapidly, and electric wire spreads all trades and professions as the carrier of supply of electric power.The insulating polymeric material used due to electric wire belongs to inflammable material, in electric energy transmitting process, often cause cable fire by internal cause (cable self-heating, short circuit etc.) and external cause (fire etc.), lives and properties are caused damage.Traditional flame retardant cable mainly adopts halogen containing polymers (as PVC) and halogen containing flame-retardant (chloride or brominated compound) by mixing acquisition good flame-retardance energy, but fire still can cause the burning of cable, and cable produces a large amount of poison gas in combustion, corrosive gases can make people suffocate, poisoning, not only greatly harm but also contaminate environment are caused to survivor and rescue personnel.Therefore, how to obtain a kind of halide-free low-smoke fireproof cable material and seem very necessary.
Summary of the invention
The object of the invention is to solve existing flame retardant cable to burn in a fire and produce a large amount of poison gas and corrosive gases, great injury is caused to survivor and rescue personnel, and the problem of contaminate environment, and a kind of halide-free low-smoke fireproof cable material and preparation method thereof is provided.
A kind of halide-free low-smoke fireproof cable material is made up of 100 parts of polyolefine, 50 parts ~ 100 parts fire retardants, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants and 2 parts ~ 4 parts oxidation inhibitor by weight.
A kind of halide-free low-smoke fireproof cable material is made up of 100 parts of polyolefine, 50 parts ~ 100 parts fire retardants, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants, 5 parts ~ 10 parts compatilizers, 1 part ~ 3 parts silane coupling agents and 2 parts ~ 4 parts oxidation inhibitor by weight;
Described polyolefine by weight mark is made up of 30 parts ~ 70 parts Low Density Polyethylenes and 30 parts ~ 70 parts ethylene-vinyl acetate copolymers;
Described fire retardant is a kind of or wherein several mixture in zinc borate, magnesium hydroxide and aluminium hydroxide;
Described char forming catalyst is one in ammonium polyphosphate, aluminum phenylphosphinate and triphenylphosphate or wherein several mixture;
Described nanometer synergistic flame retardant is one or both the mixture in modified Nano hydrotalcite and graphite nanosheets; Described modified Nano hydrotalcite is prepared according to the following steps: first hydrotalcite is calcined 6h at temperature is 400 DEG C ~ 600 DEG C, obtain bimetallic oxide LDO; By weight 2 parts of bimetallic oxide LDO are dissolved in 100 parts of distilled water, dripping 100 parts of concentration is again the lauryl sodium sulfate aqueous solution of 0.01mol/L, to re-use concentration be the pH value of 1mol/L ~ 3mol/LNaOH solution regulator solution is 10, back flow reaction 3h ~ 4h at temperature is 60 DEG C ~ 80 DEG C again, ageing 1h ~ 2h again, carry out centrifugation again, by the solid matter after centrifugation at 80 DEG C of dry 24h, obtain modified Nano hydrotalcite; The thickness of described graphite nanosheets is 5nm ~ 20nm;
Described weighting agent is one in nano-calcium carbonate, calcined kaolin and wollastonite or wherein several mixture;
Described lubricant is a kind of or wherein several mixture in Zinic stearas, stearic acid and polyethylene wax;
Described compatilizer is a kind of or wherein several mixture in maleic anhydride grafted polyethylene, maleic anhydride graft EVA and maleic anhydride graft POE;
Described silane coupling agent is a kind of or wherein several mixture in γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-aminopropyl triethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and N-(β-aminoethyl)-γ-aminopropyl triethoxysilane;
Described oxidation inhibitor is the mixture of one or more in antioxidant 1010, antioxidant 618 and antioxidant 300.
A preparation method for halide-free low-smoke fireproof cable material, specifically completes according to the following steps:
One, weighing: take 100 parts of polyolefine, 50 parts ~ 100 parts fire retardants, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants, 5 parts ~ 10 parts compatilizers, 1 part ~ 3 parts silane coupling agents and 2 parts ~ 4 parts oxidation inhibitor by weight;
Two, mix: 50 parts that take in step one ~ 100 parts fire retardants, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants, 1 part ~ 3 parts silane coupling agents and 2 parts ~ 4 parts oxidation inhibitor are carried out mixing 5min ~ 8min in high-speed mixer, obtains mixed mixture; Again take in step one 100 parts of polyolefine, 5 parts ~ 10 parts compatilizers and mixed mixture are mixed 5min ~ 8min in high-speed mixer, obtain mixed raw material;
Three, adopt milling machine carry out kneading: be mixing 10min ~ 20min in the milling machine of 120 DEG C ~ 140 DEG C in temperature by the mixed raw material obtained in step 2, obtain mixing after raw material;
Four, extruding pelletization: adopt each barrel zone temperature to be that the raw material after mixing is carried out extruding pelletization by the Dual inoculation of 130 DEG C ~ 160 DEG C, obtain halide-free low-smoke fireproof cable material;
Described polyolefine by weight mark is made up of 60 parts of Low Density Polyethylenes and 40 parts of ethylene-vinyl acetate copolymers;
Fire retardant described in step one is a kind of or wherein several mixture in zinc borate, magnesium hydroxide and aluminium hydroxide;
Char forming catalyst described in step one is one in ammonium polyphosphate, aluminum phenylphosphinate and triphenylphosphate or wherein several mixture;
Nanometer synergistic flame retardant described in step one is one or both the mixture in modified Nano hydrotalcite and graphite nanosheets; Described modified Nano hydrotalcite is prepared according to the following steps: first hydrotalcite is calcined 6h at temperature is 400 DEG C ~ 600 DEG C, obtain bimetallic oxide LDO; By weight 2 parts of bimetallic oxide LDO are dissolved in 100 parts of distilled water, dripping 100 parts of concentration is again the lauryl sodium sulfate aqueous solution of 0.01mol/L, to re-use concentration be the pH value of 1mol/L ~ 3mol/LNaOH solution regulator solution is 10, back flow reaction 3h ~ 4h at temperature is 60 DEG C ~ 80 DEG C again, ageing 1h ~ 2h again, carry out centrifugation again, by the solid matter after centrifugation at 80 DEG C of dry 24h, obtain modified Nano hydrotalcite; The thickness of described graphite nanosheets is 5nm ~ 20nm;
Weighting agent described in step one is one in nano-calcium carbonate, calcined kaolin and wollastonite or wherein several mixture;
Lubricant in step one described in step one is a kind of or wherein several mixture in Zinic stearas, stearic acid and polyethylene wax;
Compatilizer described in step one is a kind of or wherein several mixture in maleic anhydride grafted polyethylene, maleic anhydride graft EVA and maleic anhydride graft POE;
Silane coupling agent described in step one is a kind of or wherein several mixture in γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-aminopropyl triethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and N-(β-aminoethyl)-γ-aminopropyl triethoxysilane;
Oxidation inhibitor described in step one is the mixture of one or more in antioxidant 1010, antioxidant 618 and antioxidant 300.
Advantage of the present invention:
One, the invention provides a kind of halide-free low-smoke fireproof cable material, a kind of halide-free low-smoke fireproof cable material provided by the invention, by adding modified Nano synergistic flame retardant on the basis of conventional inorganic fire retardant, significantly improves the flame retardant properties of cable; A kind of halide-free low-smoke fireproof cable material of the present invention flame retardant properties is high, low cigarette, good mechanical property, and dielectric properties are excellent, and preparation technology is simple;
Two, the tensile strength of halide-free low-smoke fireproof cable material that prepared by the present invention is 11MPa ~ 13MPa, and elongation at break is 190% ~ 220%, and oxygen index is 34% ~ 38%, 20 DEG C of volume specific resistances is 2.1 × 10 12Ω m ~ 7.7 × 10 12Ω m, smoke density has flame 87 ~ 104, smoke density nonflame 123 ~ 142.
Embodiment
Embodiment one: present embodiment is that a kind of halide-free low-smoke fireproof cable material is made up of 100 parts of polyolefine, 50 parts ~ 100 parts fire retardants, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants and 2 parts ~ 4 parts oxidation inhibitor by weight.
The advantage of present embodiment:
One, present embodiment provides a kind of halide-free low-smoke fireproof cable material, and a kind of halide-free low-smoke fireproof cable material that present embodiment provides, by adding modified Nano synergistic flame retardant on the basis of conventional inorganic fire retardant, significantly improves the flame retardant properties of cable; A kind of halide-free low-smoke fireproof cable material of present embodiment flame retardant properties is high, low cigarette, good mechanical property, and dielectric properties are excellent, and preparation technology is simple;
Two, the tensile strength of halide-free low-smoke fireproof cable material that prepared by present embodiment is 11MPa ~ 13MPa, and elongation at break is 190% ~ 220%, and oxygen index is 34% ~ 38%, 20 DEG C of volume specific resistances is 2.1 × 10 12Ω m ~ 7.7 × 10 12Ω m, smoke density has flame 87 ~ 104, smoke density nonflame 123 ~ 142.
Embodiment two: present embodiment and embodiment one difference are: described polyolefine by weight mark is made up of 30 parts ~ 70 parts Low Density Polyethylenes and 30 parts ~ 70 parts ethylene-vinyl acetate copolymers.Other steps are identical with embodiment one.
Embodiment three: one of present embodiment and embodiment one or two difference is: described fire retardant is a kind of or wherein several mixture in zinc borate, magnesium hydroxide and aluminium hydroxide.Other steps are identical with embodiment one or two.
Embodiment four: one of present embodiment and embodiment one to three difference is: described char forming catalyst is one in ammonium polyphosphate, aluminum phenylphosphinate and triphenylphosphate or wherein several mixture.Other steps are identical with embodiment one to three.
Embodiment five: one of present embodiment and embodiment one to four difference is: described nanometer synergistic flame retardant is one or both the mixture in modified Nano hydrotalcite and graphite nanosheets.Other steps are identical with embodiment one to four.
Embodiment six: one of present embodiment and embodiment one to five difference is: described weighting agent is a kind of or wherein several mixture in nano-calcium carbonate, calcined kaolin and wollastonite.Other steps are identical with embodiment one to five.
Embodiment seven: one of present embodiment and embodiment one to six difference is: described lubricant is a kind of or wherein several mixture in Zinic stearas, stearic acid and polyethylene wax; Described oxidation inhibitor is the mixture of one or more in antioxidant 1010, antioxidant 618 and antioxidant 300.Other steps are identical with embodiment one to six.
Embodiment eight: one of present embodiment and embodiment one to seven difference is: described modified Nano hydrotalcite is prepared according to the following steps: first hydrotalcite is calcined 6h at temperature is 400 DEG C ~ 600 DEG C, obtain bimetallic oxide LDO; By weight 2 parts of bimetallic oxide LDO are dissolved in 100 parts of distilled water, dripping 100 parts of concentration is again the lauryl sodium sulfate aqueous solution of 0.01mol/L, to re-use concentration be the pH value of 1mol/L ~ 3mol/LNaOH solution regulator solution is 10, back flow reaction 3h ~ 4h at temperature is 60 DEG C ~ 80 DEG C again, ageing 1h ~ 2h again, carry out centrifugation again, by the solid matter after centrifugation at 80 DEG C of dry 24h, obtain modified Nano hydrotalcite; The thickness of described graphite nanosheets is 5nm ~ 20nm.Other steps are identical with embodiment one to seven.
Embodiment nine: present embodiment is that a kind of halide-free low-smoke fireproof cable material is made up of 100 parts of polyolefine, 50 parts ~ 100 parts fire retardants, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants, 5 parts ~ 10 parts compatilizers, 1 part ~ 3 parts silane coupling agents and 2 parts ~ 4 parts oxidation inhibitor by weight;
Described polyolefine by weight mark is made up of 30 parts ~ 70 parts Low Density Polyethylenes and 30 parts ~ 70 parts ethylene-vinyl acetate copolymers;
Described fire retardant is a kind of or wherein several mixture in zinc borate, magnesium hydroxide and aluminium hydroxide;
Described char forming catalyst is one in ammonium polyphosphate, aluminum phenylphosphinate and triphenylphosphate or wherein several mixture;
Described nanometer synergistic flame retardant is one or both the mixture in modified Nano hydrotalcite and graphite nanosheets; Described modified Nano hydrotalcite is prepared according to the following steps: first hydrotalcite is calcined 6h at temperature is 400 DEG C ~ 600 DEG C, obtain bimetallic oxide LDO; By weight 2 parts of bimetallic oxide LDO are dissolved in 100 parts of distilled water, dripping 100 parts of concentration is again the lauryl sodium sulfate aqueous solution of 0.01mol/L, to re-use concentration be the pH value of 1mol/L ~ 3mol/LNaOH solution regulator solution is 10, back flow reaction 3h ~ 4h at temperature is 60 DEG C ~ 80 DEG C again, ageing 1h ~ 2h again, carry out centrifugation again, by the solid matter after centrifugation at 80 DEG C of dry 24h, obtain modified Nano hydrotalcite; The thickness of described graphite nanosheets is 5nm ~ 20nm;
Described weighting agent is one in nano-calcium carbonate, calcined kaolin and wollastonite or wherein several mixture;
Described lubricant is a kind of or wherein several mixture in Zinic stearas, stearic acid and polyethylene wax;
Described compatilizer is a kind of or wherein several mixture in maleic anhydride grafted polyethylene, maleic anhydride graft EVA and maleic anhydride graft POE;
Described silane coupling agent is a kind of or wherein several mixture in γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-aminopropyl triethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and N-(β-aminoethyl)-γ-aminopropyl triethoxysilane;
Described oxidation inhibitor is the mixture of one or more in antioxidant 1010, antioxidant 618 and antioxidant 300.
The advantage of present embodiment:
One, present embodiment provides a kind of halide-free low-smoke fireproof cable material, and a kind of halide-free low-smoke fireproof cable material that present embodiment provides, by adding modified Nano synergistic flame retardant on the basis of conventional inorganic fire retardant, significantly improves the flame retardant properties of cable; A kind of halide-free low-smoke fireproof cable material of present embodiment flame retardant properties is high, low cigarette, good mechanical property, and dielectric properties are excellent, and preparation technology is simple;
Two, the tensile strength of halide-free low-smoke fireproof cable material that prepared by present embodiment is 11MPa ~ 13MPa, and elongation at break is 190% ~ 220%, and oxygen index is 34% ~ 38%, 20 DEG C of volume specific resistances is 2.1 × 10 12Ω m ~ 7.7 × 10 12Ω m, smoke density has flame 87 ~ 104, smoke density nonflame 123 ~ 142.
Embodiment ten: present embodiment is that a kind of preparation method of halide-free low-smoke fireproof cable material specifically completes according to the following steps:
One, weighing: take 100 parts of polyolefine, 50 parts ~ 100 parts fire retardants, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants, 5 parts ~ 10 parts compatilizers, 1 part ~ 3 parts silane coupling agents and 2 parts ~ 4 parts oxidation inhibitor by weight;
Two, mix: by 50 parts ~ 100 parts fire retardants taken in step one, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants, 1 part ~ 3 parts silane coupling agents and 2 parts ~ 4 parts oxidation inhibitor carry out mixing 5min ~ 8min in high-speed mixer, obtain mixed mixture; Again take in step one 100 parts of polyolefine, 5 parts ~ 10 parts compatilizers and mixed mixture are mixed 5min ~ 8min in high-speed mixer, obtain mixed raw material;
Three, adopt milling machine carry out kneading: be mixing 10min ~ 20min in the milling machine of 120 DEG C ~ 140 DEG C in temperature by the mixed raw material obtained in step 2, obtain mixing after raw material;
Four, extruding pelletization: adopt each barrel zone temperature to be that the raw material after mixing is carried out extruding pelletization by the Dual inoculation of 130 DEG C ~ 160 DEG C, obtain halide-free low-smoke fireproof cable material;
Described polyolefine by weight mark is made up of 60 parts of Low Density Polyethylenes and 40 parts of ethylene-vinyl acetate copolymers;
Fire retardant described in step one is a kind of or wherein several mixture in zinc borate, magnesium hydroxide and aluminium hydroxide;
Char forming catalyst described in step one is one in ammonium polyphosphate, aluminum phenylphosphinate and triphenylphosphate or wherein several mixture;
Nanometer synergistic flame retardant described in step one is one or both the mixture in modified Nano hydrotalcite and graphite nanosheets; Described modified Nano hydrotalcite is prepared according to the following steps: first hydrotalcite is calcined 6h at temperature is 400 DEG C ~ 600 DEG C, obtain bimetallic oxide LDO; By weight 2 parts of bimetallic oxide LDO are dissolved in 100 parts of distilled water, dripping 100 parts of concentration is again the lauryl sodium sulfate aqueous solution of 0.01mol/L, to re-use concentration be the pH value of 1mol/L ~ 3mol/LNaOH solution regulator solution is 10, back flow reaction 3h ~ 4h at temperature is 60 DEG C ~ 80 DEG C again, ageing 1h ~ 2h again, carry out centrifugation again, by the solid matter after centrifugation at 80 DEG C of dry 24h, obtain modified Nano hydrotalcite; The thickness of described graphite nanosheets is 5nm ~ 20nm;
Weighting agent described in step one is one in nano-calcium carbonate, calcined kaolin and wollastonite or wherein several mixture;
Lubricant in step one described in step one is a kind of or wherein several mixture in Zinic stearas, stearic acid and polyethylene wax;
Compatilizer described in step one is a kind of or wherein several mixture in maleic anhydride grafted polyethylene, maleic anhydride graft EVA and maleic anhydride graft POE;
Silane coupling agent described in step one is a kind of or wherein several mixture in γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-aminopropyl triethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and N-(β-aminoethyl)-γ-aminopropyl triethoxysilane;
Oxidation inhibitor described in step one is the mixture of one or more in antioxidant 1010, antioxidant 618 and antioxidant 300.
The advantage of present embodiment:
One, present embodiment provides a kind of halide-free low-smoke fireproof cable material, and a kind of halide-free low-smoke fireproof cable material that present embodiment provides, by adding modified Nano synergistic flame retardant on the basis of conventional inorganic fire retardant, significantly improves the flame retardant properties of cable; A kind of halide-free low-smoke fireproof cable material of present embodiment flame retardant properties is high, low cigarette, good mechanical property, and dielectric properties are excellent, and preparation technology is simple;
Two, the tensile strength of halide-free low-smoke fireproof cable material that prepared by present embodiment is 11MPa ~ 13MPa, and elongation at break is 190% ~ 220%, and oxygen index is 34% ~ 38%, 20 DEG C of volume specific resistances is 2.1 × 10 12Ω m ~ 7.7 × 10 12Ω m, smoke density has flame 87 ~ 104, smoke density nonflame 123 ~ 142.
Adopt following verification experimental verification advantage of the present invention:
Test one: a kind of preparation method of halide-free low-smoke fireproof cable material, specifically completes according to the following steps:
One, weighing: take 60 parts of Low Density Polyethylenes, 40 parts of ethylene-vinyl acetate copolymers, 30 parts of zinc borates, 45 parts of magnesium hydroxides, 4 portions of triphenylphosphates, 10 parts of nano-calcium carbonates, 3 parts of Zinic stearass, 3 parts of stearic acid, 1 part of polyethylene wax, 5 parts of maleic anhydride grafted polyethylenes, 2 parts of silane coupling agents, 2 parts of antioxidants and 1 part of modified hydrotalcite by weight;
Silane coupling agent described in step one is γ-glycidyl ether oxygen propyl trimethoxy silicane;
Modified Nano hydrotalcite described in step one is prepared according to the following steps: first hydrotalcite is calcined 6h at temperature is 500 DEG C, obtain bimetallic oxide LDO; By weight 2 parts of bimetallic oxide LDO are dissolved in 100 parts of distilled water, dripping 100 parts of concentration is again the lauryl sodium sulfate aqueous solution of 0.01mol/L, to re-use concentration be the pH value of 1mol/LNaOH solution regulator solution is 10, back flow reaction 3h at temperature is 70 DEG C again, ageing 1h again, carry out centrifugation again, by the solid matter after centrifugation at 80 DEG C of dry 24h, obtain modified Nano hydrotalcite;
Oxidation inhibitor described in step one is antioxidant 1010;
Two, mix: the 30 parts of zinc borates taken in step one, 45 parts of magnesium hydroxides, 4 parts of triphenylphosphates, 10 parts of nano-calcium carbonates, 3 parts of Zinic stearass, 3 parts of stearic acid, 1 part of polyethylene wax, 2 parts of silane coupling agents, 2 parts of antioxidants and 1 part of modified hydrotalcite are carried out mixing 5min ~ 8min in high-speed mixer, obtains mixed mixture; Again 60 parts of Low Density Polyethylenes, 40 parts of ethylene-vinyl acetates, 5 parts of maleic anhydride grafted polyethylenes and mixed mixtures are mixed 5min ~ 8min in high-speed mixer, obtain mixed raw material;
Three, adopt milling machine carry out kneading: be mixing 15min in the milling machine of 120 DEG C ~ 140 DEG C in temperature by the mixed raw material obtained in step 2, obtain mixing after raw material;
Four, extruding pelletization: adopt each barrel zone temperature to be that the raw material after mixing is carried out extruding pelletization by the Dual inoculation of 150 DEG C, obtain halide-free low-smoke fireproof cable material.
Test two: a kind of preparation method of halide-free low-smoke fireproof cable material, specifically completes according to the following steps:
One, weighing: take 40 parts of Low Density Polyethylenes, 60 parts of ethylene-vinyl acetate copolymers, 7 parts of maleic anhydride graft EVA, 30 parts of zinc borates, 45 parts of magnesium hydroxides, 4 portions of triphenylphosphates, 20 parts of calcined kaolins, 3 parts of Zinic stearass, 1 part of polyethylene wax, 1 part of silane coupling agent, 0.5 part of modified Nano hydrotalcite and 3 parts of oxidation inhibitor by weight;
Silane coupling agent described in step one is γ-aminopropyl triethoxysilane;
Modified Nano hydrotalcite described in step one is prepared according to the following steps: first hydrotalcite is calcined 6h at temperature is 500 DEG C, obtain bimetallic oxide LDO; By weight 2 parts of bimetallic oxide LDO are dissolved in 100 parts of distilled water, dripping 100 parts of concentration is again the lauryl sodium sulfate aqueous solution of 0.01mol/L, to re-use concentration be the pH value of 1mol/LNaOH solution regulator solution is 10, back flow reaction 3h at temperature is 70 DEG C again, ageing 1h again, carry out centrifugation again, by the solid matter after centrifugation at 80 DEG C of dry 24h, obtain modified Nano hydrotalcite;
Oxidation inhibitor described in step one is antioxidant 618;
Two, mix: the 30 parts of zinc borates taken in step one, 45 parts of magnesium hydroxides, 4 parts of triphenylphosphates, 20 parts of calcined kaolins, 3 parts of Zinic stearass, 1 part of polyethylene wax, 1 part of silane coupling agent, 0.5 part of modified Nano hydrotalcite and 3 parts of oxidation inhibitor are carried out mixing 5min ~ 8min in high-speed mixer, obtains mixed mixture; Again 40 parts of Low Density Polyethylenes, 60 parts of ethylene-vinyl acetate copolymers, 7 parts of maleic anhydride graft EVA and mixed mixtures are mixed 5min ~ 8min in high-speed mixer, obtain mixed raw material;
Three, adopt milling machine carry out kneading: be mixing 15min in the milling machine of 120 DEG C ~ 140 DEG C in temperature by the mixed raw material obtained in step 2, obtain mixing after raw material;
Four, extruding pelletization: adopt each barrel zone temperature to be that the raw material after mixing is carried out extruding pelletization by the Dual inoculation of 150 DEG C, obtain halide-free low-smoke fireproof cable material.
Test three: a kind of preparation method of halide-free low-smoke fireproof cable material, specifically completes according to the following steps:
One, weighing: take 45 parts of Low Density Polyethylenes, 55 parts of ethylene-vinyl acetate copolymers, 5 parts of maleic anhydride graft EVA, 20 parts of zinc borates, 25 parts of magnesium hydroxides, 20 parts of aluminium hydroxides, 4 parts of aluminum phenylphosphinate, 15 parts of calcined kaolins, 3 parts of Zinic stearass, 3 parts of stearic acid, 1 part of polyethylene wax, 1.5 parts of silane coupling agents, 1 part of graphite nanosheets and 4 parts of oxidation inhibitor by weight;
Silane coupling agent described in step one is N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane;
The particle diameter of the graphite nanosheets described in step one is 10nm;
Oxidation inhibitor described in step one is antioxidant 300;
Two, mix: the 20 parts of zinc borates taken in step one, 25 parts of magnesium hydroxides, 20 parts of aluminium hydroxides, 4 parts of aluminum phenylphosphinate, 15 parts of calcined kaolins, 3 parts of Zinic stearass, 3 parts of stearic acid, 1 part of polyethylene wax, 1.5 parts of silane coupling agents, 1 part of graphite nanosheets and 4 parts of oxidation inhibitor are carried out mixing 5min ~ 8min in high-speed mixer, obtains mixed mixture; Again 45 parts of Low Density Polyethylenes, 55 parts of ethylene-vinyl acetate copolymers, 5 parts of maleic anhydride graft EVA and mixed mixtures are mixed 5min ~ 8min in high-speed mixer, obtain mixed raw material;
Three, adopt milling machine carry out kneading: be mixing 15min in the milling machine of 120 DEG C ~ 140 DEG C in temperature by the mixed raw material obtained in step 2, obtain mixing after raw material;
Four, extruding pelletization: adopt each barrel zone temperature to be that the raw material after mixing is carried out extruding pelletization by the Dual inoculation of 150 DEG C, obtain halide-free low-smoke fireproof cable material.
Test four: a kind of preparation method of halide-free low-smoke fireproof cable material, specifically completes according to the following steps:
One, weighing: take 35 parts of Low Density Polyethylenes, 65 parts of ethylene-vinyl acetate copolymers, 5 parts of maleic anhydride graft POE, 30 parts of zinc borates, 25 parts of magnesium hydroxides, 20 parts of aluminium hydroxides, 4 portions of triphenylphosphates, 15 parts of wollastonites, 3 parts of stearic acid, 1 part of polyethylene wax, 2.5 parts of silane coupling agents, 0.5 part of graphite nanosheets and 3 parts of oxidation inhibitor by weight;
Silane coupling agent described in step one is N-(β-aminoethyl)-γ-aminopropyl triethoxysilane;
The particle diameter of the graphite nanosheets described in step one is 10nm;
Oxidation inhibitor described in step one is antioxidant 300;
Two, mix: by taking 30 parts of zinc borates in step one, 25 parts of magnesium hydroxides, 20 parts of aluminium hydroxides, 4 parts of triphenylphosphates, 15 parts of wollastonites, 3 parts of stearic acid, 1 part of polyethylene wax, 2.5 parts of silane coupling agents, 0.5 part of graphite nanosheets and 3 parts of oxidation inhibitor carry out mixing 5min ~ 8min in high-speed mixer, obtain mixed mixture; Again 35 parts of Low Density Polyethylenes, 65 parts of ethylene-vinyl acetate copolymers, 5 parts of maleic anhydride graft POE and mixed mixtures are mixed 5min ~ 8min in high-speed mixer, obtain mixed raw material;
Three, adopt milling machine carry out kneading: be mixing 15min in the milling machine of 120 DEG C ~ 140 DEG C in temperature by the mixed raw material obtained in step 2, obtain mixing after raw material;
Four, extruding pelletization: adopt each barrel zone temperature to be that the raw material after mixing is carried out extruding pelletization by the Dual inoculation of 150 DEG C, obtain halide-free low-smoke fireproof cable material.
Carry out the test of mechanical property, electrical property and flame retardant properties according to national standard to the halide-free low-smoke fireproof cable material that test one, test two, test three and test four obtain, as shown in table 1, table 1 is the detected result of flame retardant properties, mechanical property and electrical property.
Table 1

Claims (10)

1. a halide-free low-smoke fireproof cable material, is characterized in that a kind of halide-free low-smoke fireproof cable material is made up of 100 parts of polyolefine, 50 parts ~ 100 parts fire retardants, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants and 2 parts ~ 4 parts oxidation inhibitor by weight.
2. a kind of halide-free low-smoke fireproof cable material according to claim 1, it is characterized in that described polyolefine by weight mark be made up of 30 parts ~ 70 parts Low Density Polyethylenes and 30 parts ~ 70 parts ethylene-vinyl acetate copolymers.
3. a kind of halide-free low-smoke fireproof cable material according to claim 1, is characterized in that described fire retardant is a kind of or wherein several mixture in zinc borate, magnesium hydroxide and aluminium hydroxide.
4. a kind of halide-free low-smoke fireproof cable material according to claim 1, is characterized in that described char forming catalyst is one in ammonium polyphosphate, aluminum phenylphosphinate and triphenylphosphate or wherein several mixture.
5. a kind of halide-free low-smoke fireproof cable material according to claim 1, is characterized in that described nanometer synergistic flame retardant is one or both the mixture in modified Nano hydrotalcite and graphite nanosheets.
6. a kind of halide-free low-smoke fireproof cable material according to claim 1, is characterized in that described weighting agent is a kind of or wherein several mixture in nano-calcium carbonate, calcined kaolin and wollastonite.
7. a kind of halide-free low-smoke fireproof cable material according to claim 1, is characterized in that described lubricant is a kind of or wherein several mixture in Zinic stearas, stearic acid and polyethylene wax; Described oxidation inhibitor is the mixture of one or more in antioxidant 1010, antioxidant 618 and antioxidant 300.
8. a kind of halide-free low-smoke fireproof cable material according to claim 5, is characterized in that described modified Nano hydrotalcite is prepared according to the following steps: first hydrotalcite is calcined 6h at temperature is 400 DEG C ~ 600 DEG C, obtain bimetallic oxide LDO; By weight 2 parts of bimetallic oxide LDO are dissolved in 100 parts of distilled water, dripping 100 parts of concentration is again the lauryl sodium sulfate aqueous solution of 0.01mol/L, to re-use concentration be the pH value of 1mol/L ~ 3mol/LNaOH solution regulator solution is 10, in temperature be again? DEG C ~? back flow reaction 3h at DEG C ~ 4h, ageing 1h ~ 2h again, carry out centrifugation again, by the solid matter after centrifugation at 80 DEG C of dry 24h, obtain modified Nano hydrotalcite; The thickness of described graphite nanosheets is 5nm ~ 20nm.
9. a halide-free low-smoke fireproof cable material, is characterized in that a kind of halide-free low-smoke fireproof cable material is made up of 100 parts of polyolefine, 50 parts ~ 100 parts fire retardants, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants, 5 parts ~ 10 parts compatilizers, 1 part ~ 3 parts silane coupling agents and 2 parts ~ 4 parts oxidation inhibitor by weight;
Described polyolefine by weight mark is made up of 30 parts ~ 70 parts Low Density Polyethylenes and 30 parts ~ 70 parts ethylene-vinyl acetate copolymers;
Described fire retardant is a kind of or wherein several mixture in zinc borate, magnesium hydroxide and aluminium hydroxide;
Described char forming catalyst is one in ammonium polyphosphate, aluminum phenylphosphinate and triphenylphosphate or wherein several mixture;
Described nanometer synergistic flame retardant is one or both the mixture in modified Nano hydrotalcite and graphite nanosheets; Described modified Nano hydrotalcite is prepared according to the following steps: first hydrotalcite is calcined 6h at temperature is 400 DEG C ~ 600 DEG C, obtain bimetallic oxide LDO; By weight 2 parts of bimetallic oxide LDO are dissolved in 100 parts of distilled water, dripping 100 parts of concentration is again the lauryl sodium sulfate aqueous solution of 0.01mol/L, to re-use concentration be the pH value of 1mol/L ~ 3mol/LNaOH solution regulator solution is 10, back flow reaction 3h ~ 4h at temperature is 60 DEG C ~ 80 DEG C again, ageing 1h ~ 2h again, carry out centrifugation again, by the solid matter after centrifugation at 80 DEG C of dry 24h, obtain modified Nano hydrotalcite; The thickness of described graphite nanosheets is 5nm ~ 20nm;
Described weighting agent is one in nano-calcium carbonate, calcined kaolin and wollastonite or wherein several mixture;
Described lubricant is a kind of or wherein several mixture in Zinic stearas, stearic acid and polyethylene wax;
Described compatilizer is a kind of or wherein several mixture in maleic anhydride grafted polyethylene, maleic anhydride graft EVA and maleic anhydride graft POE;
Described silane coupling agent is a kind of or wherein several mixture in γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-aminopropyl triethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and N-(β-aminoethyl)-γ-aminopropyl triethoxysilane;
Described oxidation inhibitor is the mixture of one or more in antioxidant 1010, antioxidant 618 and antioxidant 300.
10. a preparation method for halide-free low-smoke fireproof cable material, is characterized in that what a kind of preparation method of halide-free low-smoke fireproof cable material specifically completed according to the following steps:
One, weighing: take 100 parts of polyolefine, 50 parts ~ 100 parts fire retardants, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants, 5 parts ~ 10 parts compatilizers, 1 part ~ 3 parts silane coupling agents and 2 parts ~ 4 parts oxidation inhibitor by weight;
Two, mix: by 50 parts ~ 100 parts fire retardants taken in step one, 2 parts ~ 5 parts char forming catalysts, 0.5 part ~ 2 parts nanometer synergistic flame retardants, 15 parts ~ 20 parts weighting agents, 2 parts ~ 7 parts lubricants, 1 part ~ 3 parts silane coupling agents and 2 parts ~ 4 parts oxidation inhibitor carry out mixing 5min ~ 8min in high-speed mixer, obtain mixed mixture; Again take in step one 100 parts of polyolefine, 5 parts ~ 10 parts compatilizers and mixed mixture are mixed 5min ~ 8min in high-speed mixer, obtain mixed raw material;
Three, adopt milling machine carry out kneading: be mixing 10min ~ 20min in the milling machine of 120 DEG C ~ 140 DEG C in temperature by the mixed raw material obtained in step 2, obtain mixing after raw material;
Four, extruding pelletization: adopt each barrel zone temperature to be that the raw material after mixing is carried out extruding pelletization by the Dual inoculation of 130 DEG C ~ 160 DEG C, obtain halide-free low-smoke fireproof cable material;
Described polyolefine by weight mark is made up of 60 parts of Low Density Polyethylenes and 40 parts of ethylene-vinyl acetate copolymers;
Fire retardant described in step one is a kind of or wherein several mixture in zinc borate, magnesium hydroxide and aluminium hydroxide;
Char forming catalyst described in step one is one in ammonium polyphosphate, aluminum phenylphosphinate and triphenylphosphate or wherein several mixture;
Nanometer synergistic flame retardant described in step one is one or both the mixture in modified Nano hydrotalcite and graphite nanosheets; Described modified Nano hydrotalcite is prepared according to the following steps: first hydrotalcite is calcined 6h at temperature is 400 DEG C ~ 600 DEG C, obtain bimetallic oxide LDO; By weight 2 parts of bimetallic oxide LDO are dissolved in 100 parts of distilled water, dripping 100 parts of concentration is again the lauryl sodium sulfate aqueous solution of 0.01mol/L, to re-use concentration be the pH value of 1mol/L ~ 3mol/LNaOH solution regulator solution is 10, back flow reaction 3h ~ 4h at temperature is 60 DEG C ~ 80 DEG C again, ageing 1h ~ 2h again, carry out centrifugation again, by the solid matter after centrifugation at 80 DEG C of dry 24h, obtain modified Nano hydrotalcite; The thickness of described graphite nanosheets is 5nm ~ 20nm;
Weighting agent described in step one is one in nano-calcium carbonate, calcined kaolin and wollastonite or wherein several mixture;
Lubricant in step one described in step one is a kind of or wherein several mixture in Zinic stearas, stearic acid and polyethylene wax;
Compatilizer described in step one is a kind of or wherein several mixture in maleic anhydride grafted polyethylene, maleic anhydride graft EVA and maleic anhydride graft POE;
Silane coupling agent described in step one is a kind of or wherein several mixture in γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-aminopropyl triethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and N-(β-aminoethyl)-γ-aminopropyl triethoxysilane;
Oxidation inhibitor described in step one is the mixture of one or more in antioxidant 1010, antioxidant 618 and antioxidant 300.
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CN105061861A (en) * 2015-08-06 2015-11-18 安徽电信器材贸易工业有限责任公司 Tracking-resistance sheath material used for fiber
CN105061856A (en) * 2015-08-06 2015-11-18 安徽电信器材贸易工业有限责任公司 High-strength pressure-proof optical fiber sheath material
CN105400117B (en) * 2015-11-23 2019-12-13 厦门理工学院 anti-droplet expansion flame-retardant poly (butylene succinate) and preparation method thereof
CN105400117A (en) * 2015-11-23 2016-03-16 厦门理工学院 Anti-dripping intumescent flame retardant PBS (poly(butylene succinate)) and preparation method thereof
CN106750812A (en) * 2016-12-28 2017-05-31 湖北工程学院 PE tubing of antibacterial flame-retardant and preparation method thereof
CN107286444A (en) * 2017-08-02 2017-10-24 合肥安力电力工程有限公司 A kind of high-intensity high combustion property CABLE MATERIALS and preparation method thereof
CN107746493A (en) * 2017-10-24 2018-03-02 芜湖航天特种电缆厂股份有限公司 Heat-resistant fireproof cable and preparation method thereof
CN108178864A (en) * 2017-11-24 2018-06-19 中广核拓普(四川)新材料有限公司 Height knot carbon type low smoke halogen-free fire retardant polyolefin cable material
CN109503931A (en) * 2018-11-13 2019-03-22 苏州亨利通信材料有限公司 Ceramic low smoke, zero halogen fire-resistant polyolefin CABLE MATERIALS and preparation method thereof
CN109593259A (en) * 2018-11-19 2019-04-09 苏州亨利通信材料有限公司 The preparation method of fast ceramic cable material of polyolefin
CN109517258A (en) * 2018-11-19 2019-03-26 苏州亨利通信材料有限公司 Heat insulation type ceramic Low-smoke flame retardant cable material
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CN116253947A (en) * 2023-02-01 2023-06-13 江苏馨德高分子材料股份有限公司 Halogen-free low-smoke flame-retardant polyolefin sheath material and preparation process thereof
CN116253947B (en) * 2023-02-01 2023-10-27 江苏馨德高分子材料股份有限公司 Halogen-free low-smoke flame-retardant polyolefin sheath material and preparation process thereof
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