CN106633337B - Marine low-smoke halogen-free oil-proof high-performance power cable material and preparation method thereof - Google Patents

Marine low-smoke halogen-free oil-proof high-performance power cable material and preparation method thereof Download PDF

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CN106633337B
CN106633337B CN201610858587.9A CN201610858587A CN106633337B CN 106633337 B CN106633337 B CN 106633337B CN 201610858587 A CN201610858587 A CN 201610858587A CN 106633337 B CN106633337 B CN 106633337B
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CN106633337A (en
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杨波
范伟伟
范魏魏
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Jiangsu Dasheng Polymer Co ltd
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    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0869—Acids or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
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    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • 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
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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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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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    • C08L2205/00—Polymer mixtures characterised by other features
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    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • 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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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)

Abstract

The invention provides a low-smoke halogen-free oil-proof high-performance power cable material for ships and a preparation method thereof, wherein the material comprises the following components in parts by weight: the thermoplastic elastomer composition comprises, by weight, 10-15 parts of a thermoplastic elastomer A, 20-30 parts of a thermoplastic elastomer B, 5-20 parts of an ethylene-ethyl acrylate copolymer, 30-35 parts of aluminum hydroxide, 1-5 parts of a stabilizer and 1-5 parts of silicone master batch. According to the invention, the marine power cable material with good flame retardant property, good mechanical property and oil resistance is obtained by utilizing the synergistic effect of the ethylene-ethyl acrylate copolymer, the thermoplastic elastomer A and the thermoplastic elastomer B and through the reasonable proportion of the components of the composition.

Description

Marine low-smoke halogen-free oil-proof high-performance power cable material and preparation method thereof
Technical Field
The invention belongs to the technical field of organic polymers, relates to a power cable wire, and particularly relates to a low-smoke halogen-free oil-proof high-performance power cable material for a ship and a preparation method thereof.
Background
The ship industry is a modern comprehensive industry for providing technical equipment for the industries of water traffic, ocean development, national defense construction and the like. China has a long coastline suitable for shipbuilding, and has strong advantages in developing the ship industry. The future requirements of the ship industry in China are increased, the market of the marine cable is also increased, the market requirements are gradually expanded, and the market development prospect is wide.
The traditional cable sheath generally uses Chloroprene Rubber (CR) and chlorosulfonated polyethylene as main materials, and has poor processability and finished product performance and higher cost. CN 103131067A discloses a rubber sheath formula and a manufacturing method, wherein chloroprene rubber and chlorinated polyethylene are adopted as main materials in the formula. However, conventional flame retardant cables have their limitations and release large amounts of harmful corrosive hydrogen halide gases upon combustion. Toxic gas can quickly spread on the whole ship along the ventilation system, smoke interferes with the sight, and harmful gas is diffused, so that difficulty is brought to on-site escape and rescue. In addition, the corrosive gas also corrodes facilities such as ship hull instruments, and the danger of direct combustion is higher.
CN 102746555A discloses a marine low-smoke halogen-free oil-proof high-performance power cable material and a preparation method thereof, wherein the wire is composed of the following components in parts by weight: thermoplastic elastomer (TPE) a: 5-20 parts of a solvent; thermoplastic elastomer (TPE) B: 15-40 parts; 40-70 parts of aluminum hydroxide; a stabilizer: 1-5 parts; silicone master batch: 1-5 parts. Although the power cable material has excellent flame retardant property, the smoke release amount is extremely low during combustion, and the light transmittance in smoke can reach more than 90%, the flame retardant property of the power cable material is improved, and the physical mechanical property and the oil resistance of the power cable material are reduced at the cost of sacrificing the physical property and the oil resistance of the power cable material, so that the further application of the power cable material is limited.
Therefore, how to research a marine power cable material with good flame retardant property and good mechanical property and oil resistance is a problem to be solved urgently.
Disclosure of Invention
The flame-retardant cable material aims at solving the problems that the flame-retardant performance of the existing marine power cable material is improved, and the physical mechanical property and the oil resistance of the existing marine power cable material are reduced at the cost of sacrificing the physical property and the oil resistance, so that the further application of the existing marine power cable material is limited, and the like. The invention provides a low-smoke halogen-free oil-proof power cable material for ships and a preparation method thereof, wherein the power cable material takes a composition of a thermoplastic elastomer A, a thermoplastic elastomer B, an ethylene-ethyl acrylate copolymer, aluminum hydroxide, a stabilizer and silicone master batches as raw materials, the ethylene-ethyl acrylate copolymer, the thermoplastic elastomer A and the thermoplastic elastomer B are subjected to synergistic action, and the marine power cable material with good flame retardant property, good mechanical property and oil resistance is obtained through reasonable proportioning of the components of the composition.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a low-smoke halogen-free oil-proof power cable material for a ship, which comprises the following components in parts by weight:
Figure BDA0001122489190000021
wherein, the weight portion of the thermoplastic elastomer A can be 10 portions, 10.5 portions, 11 portions, 11.5 portions, 12 portions, 12.5 portions, 13 portions, 13.5 portions, 14 portions, 14.5 portions or 15 portions, etc.; the parts by weight of thermoplastic elastomer B may be 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, or the like; the ethylene-ethyl acrylate copolymer can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 12 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts or 20 parts by weight; the aluminum hydroxide can be 30 parts, 30.5 parts, 31 parts, 31.5 parts, 32 parts, 32.5 parts, 33 parts, 33.5 parts, 34 parts, 34.5 parts or 35 parts by weight; the weight portion of the stabilizer can be 1 portion, 2 portions, 3 portions, 4 portions or 5 portions; the silicone master batch can be 1 part, 2 parts, 3 parts, 4 parts or 5 parts by weight.
The compositions in parts by weight of the components of the above-mentioned compositions are not limited to the recited values, and other values not recited in the respective numerical ranges are also applicable.
The following technical solutions are preferred but not limited to the technical solutions provided by the present invention, and the technical objects and advantages of the present invention can be better achieved and realized by the following technical solutions.
As a preferable technical scheme of the invention, the material comprises the following components in parts by weight:
Figure BDA0001122489190000031
the power cable material prepared by the composition proportion has better performance.
Preferably, the mass ratio of the thermoplastic elastomer a to the thermoplastic elastomer B is 1: 2.
In the invention, the performance of the power cable material prepared by the thermoplastic elastomer A and the thermoplastic elastomer B in the mass ratio of 1:2 is optimal.
In a preferred embodiment of the present invention, the ethylene-ethyl acrylate copolymer contains 15 to 30 wt% of ethyl acrylate, for example, 15 wt%, 16 wt%, 17 wt%, 18 wt%, 19 wt%, 20 wt%, 22 wt%, 25 wt%, 26 wt%, 27 wt%, 28 wt%, 29 wt%, or 30 wt%, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned value range are also applicable, and more preferably 19 wt%.
According to the invention, the main chain of the ethylene-ethyl acrylate copolymer molecule contains carbonyl with stronger polarity, and the ethylene-ethyl acrylate copolymer, the thermoplastic elastomer A and the thermoplastic elastomer B generate a synergistic effect, so that the oil-proof performance and the comprehensive performance of the power cable material are improved on the basis of ensuring the low-smoke halogen-free performance of the power cable material.
Therefore, the content of the ethyl acrylate in the ethylene-ethyl acrylate copolymer needs to be controlled within a proper range, and if the content of the ethyl acrylate in the ethylene-ethyl acrylate copolymer is less than 15 wt%, the overall polarity of the material is low, which is not beneficial to improving the oil-proof performance; if the content of ethyl acrylate in the ethylene-ethyl acrylate copolymer is more than 30 wt%, the force acting between the ethylene-ethyl acrylate copolymer and the thermoplastic elastomer is reduced, i.e., the compatibility is deteriorated, and finally the tensile strength of the material is reduced.
As a preferable technical scheme of the invention, the thermoplastic elastomer A comprises the following components in parts by weight:
Figure BDA0001122489190000041
wherein, the weight portion of the ethylene-propylene copolymer can be 10 portions, 11 portions, 12 portions, 13 portions, 14 portions, 15 portions, 18 portions, 20 portions, 22 portions, 25 portions, 26 portions, 27 portions, 28 portions, 29 portions or 30 portions, etc.; the ethylene-octylene copolymer can be 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts by weight; the polyethylene may be present in amounts of 20, 21, 22, 23, 24, 25, 28, 30, 32, 35, 36, 37, 38, 39 or 40 parts by weight; the polypropylene may be present in amounts of 30, 31, 32, 33, 34, 35, 38, 40, 42, 45, 46, 47, 48, 49 or 50 parts by weight.
The composition of the components in parts by weight in the thermoplastic elastomer A composition is not limited to the recited values, and other values not recited in the respective numerical ranges are also applicable.
Preferably, the ethylene-propylene copolymer has a molecular weight of 10 to 20 ten thousand, such as 11 ten thousand, 12 ten thousand, 13 ten thousand, 14 ten thousand, 15 ten thousand, 16 ten thousand, 17 ten thousand, 18 ten thousand, 19 ten thousand, or 20 ten thousand, etc., a mooney viscosity at 100 ℃ of 30 to 60, such as 31, 33, 35, 38, 40, 43, 45, 48, 50, 53, 55, 58, or 60, etc., and a hardness of shore a30-60, such as 31, 33, 35, 38, 40, 43, 45, 48, 50, 53, 55, 58, or 60, etc.; the above-mentioned parameters of the ethylene-propylene copolymer are not limited to the recited values, and other values not recited in the respective numerical ranges are also applicable.
Preferably, the ethylene-octene copolymer has a molecular weight of 8-15 ten thousand, such as 8 ten thousand, 9 ten thousand, 10 ten thousand, 11 ten thousand, 12 ten thousand, 13 ten thousand, 14 ten thousand, or 15 ten thousand, etc., and a melt index (190 ℃, 2.16kg) of 0.5-3 g/10min, such as 0.5g/10min, 0.8g/10min, 1g/10min, 1.5g/10min, 1.8g/10min, 2g/10min, 2.5g/10min, 2.8g/10min, or 3g/10min, etc.; the above-mentioned parameters of the ethylene-octene copolymer are not limited to the recited values, but other values within the respective ranges are also applicable.
Preferably, the polypropylene is a silicon-free co-polypropylene, the molecular weight is 8-16 ten thousand, such as 8 ten thousand, 9 ten thousand, 10 ten thousand, 11 ten thousand, 12 ten thousand, 13 ten thousand, 14 ten thousand, 15 ten thousand or 16 ten thousand, etc., and the melt index (190 ℃, 2.16kg) is 1-6 g/10min, such as 1g/10min, 2g/10min, 3g/10min, 4g/10min, 5g/10min or 6g/10min, etc.; the parameters of the polypropylene are not limited to the values listed, and other values within the ranges are also applicable.
As a preferable technical scheme of the invention, the thermoplastic elastomer B comprises the following components in parts by weight:
Figure BDA0001122489190000061
wherein, the weight portion of the ethylene-propylene terpolymer and the non-conjugated diene terpolymer can be 20 portions, 21 portions, 22 portions, 23 portions, 24 portions, 25 portions, 28 portions, 30 portions, 32 portions, 35 portions, 36 portions, 37 portions, 38 portions, 39 portions or 40 portions, etc.; the hydrogenated styrene-butadiene-styrene block copolymer may be 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 22 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, or the like by weight; the polyethylene may be present in amounts of 30, 32, 35, 38, 40, 45, 50, 55, 60, 62, 65, 68 or 70 parts by weight; the white oil may be present in 25, 26, 27, 28, 29, 30, 32, 35, 36, 37, 38, 39 or 40 parts by weight.
The compositions in parts by weight of the components of the thermoplastic elastomer B composition are not limited to the values listed, and other values not listed in the numerical ranges are also applicable.
Wherein the ethylene-propylene and non-conjugated diene terpolymer is a terpolymer of ethylene-propylene and a small amount of non-conjugated diene.
Preferably, the ethylene-propylene and non-conjugated diene terpolymer has a molecular weight of 5 to 15 ten thousand, such as 5 ten thousand, 6 ten thousand, 7 ten thousand, 8 ten thousand, 9 ten thousand, 10 ten thousand, 11 ten thousand, 12 ten thousand, 13 ten thousand, 14 ten thousand, 15 ten thousand, or the like; a Mooney viscosity at 100 ℃ of 30 to 70, for example 30, 32, 35, 38, 40, 45, 50, 55, 60, 62, 65, 68 or 70; hardness is shore a20-50, e.g., 20, 22, 25, 28, 30, 35, 40, 42, 45, 48, or 50, etc.; the above-mentioned parameters of the ethylene-propylene and non-conjugated diene terpolymer are not limited to the recited values, and other values not recited in the respective ranges of values are also applicable.
Preferably, the hydrogenated styrene-butadiene-styrene block copolymer has a molecular weight of 8 to 14 ten thousand, for example, 8, 9, 10, 11, 12, 13, or 14 ten thousand, etc.; wherein the content of the butadiene is 30 to 60 wt%, for example 30 wt%, 32 wt%, 35 wt%, 38 wt%, 40 wt%, 45 wt%, 50 wt%, 52 wt%, 55 wt%, 58 wt%, or 60 wt%, etc.; the content of styrene is 40 to 70 wt%, for example 40 wt%, 42 wt%, 45 wt%, 48 wt%, 50 wt%, 55 wt%, 60 wt%, 62 wt%, 65 wt%, 68 wt%, or 70 wt%, etc.; the above-mentioned parameters of the ethylene-butadiene-styrene block copolymer are not limited to the recited values, and other values not recited in the respective numerical ranges are also applicable.
Preferably, the polyethylene is low density polyethylene, and the molecular weight is 8 to 16 ten thousand, such as 8 ten thousand, 9 ten thousand, 10 ten thousand, 11 ten thousand, 12 ten thousand, 13 ten thousand, 14 ten thousand, 15 ten thousand or 16 ten thousand; the melt index (190 ℃, 2.16kg) is 1-5 g/10min, such as 1g/10min, 1.5g/10min, 2g/10min, 2.5g/10min, 3g/10min, 3.5g/10min, 4g/10min, 4.5g/10min or 5g/10 min; the above-mentioned polyethylene parameters are not limited to the recited values, but other values within the respective ranges are also applicable.
Preferably, the molecular weight of the white oil is 300-400, such as 310, 320, 330, 340, 350, 360, 370, 380, 390 or 400, etc.; the kinematic viscosity at 40 ℃ is 15-35 m2S, e.g. 15m2/s、18m2/s、20m2/s、22m2/s、25m2/s、28m2/s、30m2/s、32m2S or 35m2S, etc.; the parameters of the white oil are not limited to the numerical values listed, and the numerical values are in the rangeOther values not listed within the enclosure are equally applicable.
In a preferred embodiment of the present invention, the aluminum hydroxide is prepared by a bayer-sintering method, and has a mesh number of 4000 to 8000 meshes, for example, 4000 meshes, 4500 meshes, 5000 meshes, 5500 meshes, 6000 meshes, 6500 meshes, 7000 meshes, 7500 meshes, 8000 meshes, or the like, but is not limited to the above-mentioned numerical values, and other numerical values not listed in each numerical value range are also applicable.
Preferably, the stabilizer consists of the following components in parts by weight:
40-60 parts of calcium stearate;
5-50 parts of zinc stearate;
30-50 parts of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester.
Wherein, the weight portion of the calcium stearate can be 40 portions, 41 portions, 42 portions, 43 portions, 44 portions, 45 portions, 48 portions, 50 portions, 52 portions, 55 portions, 56 portions, 57 portions, 58 portions, 59 portions or 60 portions, etc.; the zinc stearate can be 5 parts, 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts or 60 parts by weight; the weight parts of the tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester can be 30 parts, 32 parts, 35 parts, 40 parts, 42 parts, 45 parts, 48 parts, 50 parts and the like.
The compositions in parts by weight of the components of the above-mentioned stabilizer composition are not limited to the recited values, and other values not recited in the respective numerical ranges are also applicable.
As a preferable technical scheme of the invention, the silicone master batch comprises the following components in parts by weight:
10-20 parts of low-density polyethylene;
20-60 parts of silicone oil;
30-60 parts of silicon dioxide;
wherein, the weight portion of the low-density polyethylene can be 10 portions, 11 portions, 12 portions, 13 portions, 14 portions, 15 portions, 16 portions, 17 portions, 18 portions, 19 portions or 20 portions, etc.; 20-60 parts of silicone oil can be 20 parts, 22 parts, 25 parts, 28 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 52 parts, 55 parts, 58 parts or 60 parts by weight; the weight parts of silica may be 30 parts, 32 parts, 35 parts, 38 parts, 40 parts, 45 parts, 50 parts, 52 parts, 55 parts, 58 parts, 60 parts, or the like.
The compositions in parts by weight of the components of the silicone master batch composition are not limited to the recited values, and other values not recited in the ranges of the values are also applicable.
Preferably, the low density polyethylene has a molecular weight of 1 to 5 ten thousand, such as 1 ten thousand, 1.5 ten thousand, 2 ten thousand, 2.5 ten thousand, 3 ten thousand, 3.5 ten thousand, 4 ten thousand, 4.5 ten thousand, or 5 ten thousand, etc.; the melt index is 5-10 g/10min, such as 5g/10min, 5.5g/10min, 6g/10min, 6.5g/10min, 7g/10min, 7.5g/10min, 8g/10min, 8.5g/10min, 9g/10min, 9.5g/10min or 10g/10 min; the above-mentioned parameters of the low-density polyethylene are not limited to the recited values, and other values not recited in the numerical ranges are also applicable.
Preferably, the silicone oil is dimethicone.
Preferably, the silica is prepared by a precipitation method, and has a mesh number of 4000 to 6000 mesh, for example, 4100 mesh, 4200 mesh, 4300 mesh, 4400 mesh, 4500 mesh, 4800 mesh, 5000 mesh, 5200 mesh, 5500 mesh, 5600 mesh, 5700 mesh, 5800 mesh, 5900 mesh, or 6000 mesh, but is not limited to the enumerated values, and other unrecited values within each numerical range are also applicable.
In a second aspect, the present invention provides a method for preparing the above power cable material, comprising the following steps:
(1) melting and blending the thermoplastic elastomer A, the thermoplastic elastomer B, the ethylene-ethyl acrylate copolymer, the aluminum hydroxide, the stabilizer and the silicone master batch according to the formula ratio by an internal mixer, and then granulating by a double-screw extruder and a single-screw extruder to obtain particles;
(2) extruding the particles obtained in the step (1) into wires through an extruder;
(3) and (3) carrying out irradiation crosslinking on the wire rod obtained in the step (2) by using an electron accelerator to obtain a finished product.
As a preferable technical scheme of the invention, in the step (1) of the preparation method, the twin-screw extruder is divided into six zones, and the working temperature of each zone is as follows:
the first zone is at 90-100 deg.C, such as 90 deg.C, 91 deg.C, 92 deg.C, 93 deg.C, 94 deg.C, 95 deg.C, 96 deg.C, 97 deg.C, 98 deg.C, 99 deg.C or 100 deg.C;
the second zone is at 100-120 deg.C, such as 100 deg.C, 101 deg.C, 102 deg.C, 103 deg.C, 104 deg.C, 105 deg.C, 108 deg.C, 110 deg.C, 112 deg.C, 115 deg.C, 116 deg.C, 117 deg.C, 118 deg.C, 119 deg.C or 120 deg.C;
a third region at 120-140 deg.C, such as 120 deg.C, 121 deg.C, 122 deg.C, 123 deg.C, 124 deg.C, 125 deg.C, 128 deg.C, 130 deg.C, 132 deg.C, 135 deg.C, 136 deg.C, 137 deg.C, 138 deg.C, 139 deg.C or 140 deg.C;
a fourth region at 120-140 deg.C, such as 120 deg.C, 121 deg.C, 122 deg.C, 123 deg.C, 124 deg.C, 125 deg.C, 128 deg.C, 130 deg.C, 132 deg.C, 135 deg.C, 136 deg.C, 137 deg.C, 138 deg.C, 139 deg.C or 140 deg.C;
a fifth zone at 140-150 deg.C, such as 140 deg.C, 141 deg.C, 142 deg.C, 143 deg.C, 144 deg.C, 145 deg.C, 146 deg.C, 147 deg.C, 148 deg.C, 149 deg.C or 150 deg.C;
a sixth zone at 150-160 deg.C, such as 150 deg.C, 151 deg.C, 152 deg.C, 153 deg.C, 154 deg.C, 155 deg.C, 157 deg.C, 158 deg.C, 159 deg.C or 160 deg.C;
the operating temperatures in the zones of the twin-screw extruder are not limited to the values listed, but other values within the respective ranges are also applicable.
Preferably, the single screw extruder in step (1) is divided into five zones, and the working temperature of each zone is:
the first zone is at 100-110 deg.C, such as 100 deg.C, 101 deg.C, 102 deg.C, 103 deg.C, 104 deg.C, 105 deg.C, 106 deg.C, 107 deg.C, 108 deg.C, 109 deg.C or 110 deg.C;
the second zone is at 110-120 deg.C, such as 110 deg.C, 111 deg.C, 112 deg.C, 113 deg.C, 114 deg.C, 115 deg.C, 116 deg.C, 117 deg.C, 118 deg.C, 119 deg.C or 120 deg.C;
a third region at 130-140 deg.C, such as 130 deg.C, 131 deg.C, 132 deg.C, 133 deg.C, 134 deg.C, 135 deg.C, 136 deg.C, 137 deg.C, 138 deg.C, 139 deg.C or 140 deg.C;
a fourth zone at 140-150 deg.C, such as 140 deg.C, 141 deg.C, 142 deg.C, 143 deg.C, 144 deg.C, 145 deg.C, 146 deg.C, 147 deg.C, 148 deg.C, 149 deg.C or 150 deg.C;
the fifth zone is at 140-150 deg.C, such as 140 deg.C, 141 deg.C, 142 deg.C, 143 deg.C, 144 deg.C, 145 deg.C, 146 deg.C, 147 deg.C, 148 deg.C, 149 deg.C or 150 deg.C.
The operating temperatures in the individual zones of the single-screw extruder are not limited to the values listed, but other values not listed in the individual ranges of values are equally applicable.
As a preferable technical scheme of the invention, the extruder in the step (2) is divided into four zones, and the working temperature of each zone is as follows:
the first zone is at 130-140 deg.C, such as 130 deg.C, 131 deg.C, 132 deg.C, 133 deg.C, 134 deg.C, 135 deg.C, 136 deg.C, 137 deg.C, 138 deg.C, 139 deg.C or 140 deg.C;
the second zone is at 140-150 deg.C, such as 140 deg.C, 141 deg.C, 142 deg.C, 143 deg.C, 144 deg.C, 145 deg.C, 146 deg.C, 147 deg.C, 148 deg.C, 149 deg.C or 150 deg.C;
a third region at 150-180 deg.C, such as 150 deg.C, 151 deg.C, 152 deg.C, 153 deg.C, 154 deg.C, 155 deg.C, 160 deg.C, 165 deg.C, 170 deg.C, 175 deg.C, 176 deg.C, 177 deg.C, 178 deg.C, 179 deg.C or 180 deg.C;
the fourth zone is 160-180 ℃; 160 ℃, 161 ℃, 162 ℃, 163 ℃, 164 ℃, 165 ℃, 170 ℃, 175 ℃, 176 ℃, 177 ℃, 178 ℃, 179 ℃ or 180 ℃ and the like;
the operating temperatures in the various zones of the extruder are not limited to the values recited, and other values within the ranges are equally applicable.
Preferably, in the step (3), the wire is irradiated and crosslinked by an electron accelerator to form a three-dimensional network structure.
In the invention, after the wire is irradiated and crosslinked by the electron accelerator to form a three-dimensional network structure, the oil resistance of the wire is obviously enhanced.
Compared with the prior art, the invention has the following beneficial effects:
(1) the marine power cable material prepared by using the composition of the thermoplastic elastomer A, the thermoplastic elastomer B, the ethylene-ethyl acrylate copolymer, the aluminum hydroxide, the stabilizer and the silicone master batch as raw materials and utilizing the synergistic effect of the ethylene-ethyl acrylate copolymer, the thermoplastic elastomer A and the thermoplastic elastomer B has good flame retardant property, good mechanical property and oil resistance, tensile strength of the marine power cable material can reach more than 20MPa, elongation at break of the marine power cable material can reach more than 270 percent, and light transmittance of the marine power cable material in smoke can reach more than 96 percent.
(2) The marine power cable material prepared by the invention has the advantages of simple preparation method process, easiness in operation and low energy consumption, and is suitable for industrial production.
Detailed Description
In order to better illustrate the present invention and facilitate the understanding of the technical solutions of the present invention, the present invention is further described in detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
The specific embodiment of the invention provides a low-smoke halogen-free oil-proof high-performance power cable material for ships and a preparation method thereof, wherein the material comprises the following components in parts by weight:
Figure BDA0001122489190000121
the preparation method comprises the following steps:
(1) melting and blending the thermoplastic elastomer A, the thermoplastic elastomer B, the ethylene-ethyl acrylate copolymer, the aluminum hydroxide, the stabilizer and the silicone master batch according to the formula ratio by an internal mixer, and then granulating by a double-screw extruder and a single-screw extruder to obtain particles;
(2) extruding the particles obtained in the step (1) into wires through an extruder;
(3) and (3) carrying out irradiation crosslinking on the wire rod obtained in the step (2) by using an electron accelerator to obtain a finished product.
The following are typical but non-limiting examples of the invention:
example 1:
the embodiment provides a low-smoke halogen-free oil-proof high-performance power cable material for ships and a preparation method thereof, wherein the material comprises the following components in parts by weight: 13 parts of thermoplastic elastomer A, 26 parts of thermoplastic elastomer B, 10 parts of ethylene-ethyl acrylate copolymer, 35 parts of aluminum hydroxide, 3 parts of stabilizer and 3 parts of silicone master batch.
The content of ethyl acrylate in the ethylene-ethyl acrylate copolymer is 20 wt%.
The thermoplastic elastomer (TPE) A comprises the following components in parts by weight: 20 parts of ethylene-propylene copolymer, 5 parts of ethylene-octylene copolymer, 30 parts of polyethylene and 45 parts of polypropylene. Wherein the molecular weight of the ethylene-propylene copolymer is 15 ten thousand, the Mooney viscosity (100 ℃) is 50, and the hardness is Shore A45; the molecular weight of the ethylene-octylene copolymer is 10 ten thousand, and the melt index (190 ℃, 2.16kg) is 1.0g/10 min; the polyethylene was low density polyethylene having a molecular weight of 12 ten thousand and a melt index (190 ℃ C., 2.16kg) of 2.0g/10 min.
The thermoplastic elastomer (TPE) B comprises the following components in parts by weight: 25 parts of ethylene-propylene and a small amount of non-conjugated diene terpolymer, 15 parts of hydrogenated styrene-butadiene-styrene block copolymer, 30 parts of polyethylene and 30 parts of white oil. Wherein the terpolymer of the ethylene-propylene and a small amount of non-conjugated diene has the molecular weight of 10 ten thousand, the Mooney viscosity (100 ℃) of 50 and the hardness of Shore A35; the molecular weight of the hydrogenated styrene-butadiene-styrene block copolymer is 12 ten thousand, the butadiene content is 40 percent, and the styrene content is 60 percent; the polyethylene is low-density polyethylene, the molecular weight is 12 ten thousand, and the melt index (190 ℃, 2.16kg) is 2.0g/10 min; the molecular weight of the white oil is 360, and the kinematic viscosity (at 40 ℃) is 30 square meters per second; the content of the ethylene-acrylic ester copolymer ethyl acrylate is 15-30%; the aluminum hydroxide is prepared by a Bayer-sintering combination method, and has the mesh number of 6000.
The stabilizer comprises the following components in parts by weight: 50 parts of calcium stearate, 15 parts of zinc stearate and 35 parts of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester.
The silicone master batch comprises the following components in parts by weight: 15 parts of low-density polyethylene, 35 parts of silicone oil and 50 parts of silicon dioxide. Wherein the low density polyethylene has a molecular weight of 2 ten thousand and a melt index of 8g/10 min; the silicone oil is dimethyl silicone oil; the silicon dioxide is precipitated silicon dioxide with the mesh number of 5000 meshes.
The preparation method of the material comprises the following steps:
(1) melting and blending the thermoplastic elastomer A, the thermoplastic elastomer B, the ethylene-ethyl acrylate copolymer, the aluminum hydroxide, the stabilizer and the silicone master batch according to the formula ratio by an internal mixer, and then granulating by a double-screw extruder and a single-screw extruder to obtain particles;
(2) extruding the particles obtained in the step (1) into wires through an extruder;
(3) and (3) carrying out irradiation crosslinking on the wire rod obtained in the step (2) by using an electron accelerator to obtain a finished product.
Wherein, the specific parameters of the internal mixer melt blending in the step (1) are as follows: banburying temperature is 120-140 ℃, and banburying time is 10-15 minutes;
in the step (1), the double-screw extruder is divided into six zones, and the working temperature of each zone is as follows: the temperature of the first zone is 90-100 ℃, the temperature of the second zone is 100-120 ℃, the temperature of the third zone is 120-140 ℃, the temperature of the fourth zone is 120-140 ℃, the temperature of the fifth zone is 140-150 ℃, and the temperature of the sixth zone is 150-160 ℃; the single screw extruder is divided into five zones, and the working temperature of each zone is as follows: the temperature of the first zone is 100-110 ℃, the temperature of the second zone is 110-120 ℃, the temperature of the third zone is 130-140 ℃, the temperature of the fourth zone is 140-150 ℃, and the temperature of the fifth zone is 140-150 ℃;
in the step (2), the extruder is divided into four zones, and the working temperature of each zone is as follows: the temperature of the first zone is 130-140 ℃, the temperature of the second zone is 140-150 ℃, the temperature of the third zone is 150-180 ℃, and the temperature of the fourth zone is 160-180 ℃.
The marine low-smoke halogen-free oil-proof high-performance power cable material prepared in the embodiment is subjected to performance test, and the test results are shown in table 1.
Example 2:
the embodiment provides a low-smoke halogen-free oil-proof high-performance power cable material for ships and a preparation method thereof, wherein the material comprises the following components in parts by weight: 15 parts of thermoplastic elastomer A, 20 parts of thermoplastic elastomer B, 8 parts of ethylene-ethyl acrylate copolymer, 33 parts of aluminum hydroxide, 2 parts of stabilizer and 2.5 parts of silicone master batch.
The content of ethyl acrylate in the ethylene-ethyl acrylate copolymer was 15 wt%.
The thermoplastic elastomer (TPE) A comprises the following components in parts by weight: 20 parts of ethylene-propylene copolymer, 5 parts of ethylene-octylene copolymer, 30 parts of polyethylene and 45 parts of polypropylene. Wherein the molecular weight of the ethylene-propylene copolymer is 15 ten thousand, the Mooney viscosity (100 ℃) is 50, and the hardness is Shore A45; the molecular weight of the ethylene-octylene copolymer is 10 ten thousand, and the melt index (190 ℃, 2.16kg) is 1.0g/10 min; the polyethylene is low-density polyethylene, the molecular weight is 12 ten thousand, and the melt index (190 ℃, 2.16kg) is 2.0g/10 min; the polypropylene is silicon-free co-polypropylene, the molecular weight is 11 ten thousand, and the melt index (190 ℃, 2.16kg) is 2.5g/10 min.
The thermoplastic elastomer (TPE) B comprises the following components in parts by weight: 25 parts of ethylene-propylene and a small amount of non-conjugated diene terpolymer, 15 parts of hydrogenated styrene-butadiene-styrene block copolymer, 30 parts of polyethylene and 30 parts of white oil. Wherein the terpolymer of the ethylene-propylene and a small amount of non-conjugated diene has the molecular weight of 10 ten thousand, the Mooney viscosity (100 ℃) of 50 and the hardness of Shore A35; the molecular weight of the hydrogenated styrene-butadiene-styrene block copolymer is 12 ten thousand, the butadiene content is 40 percent, and the styrene content is 60 percent; the polyethylene is low-density polyethylene, the molecular weight is 12 ten thousand, and the melt index (190 ℃, 2.16kg) is 2.0g/10 min; the molecular weight of the white oil is 360, and the kinematic viscosity (at 40 ℃) is 30 square meters per second; the aluminum hydroxide is prepared by a Bayer-sintering combination method, and the mesh number is 6000.
The stabilizer comprises the following components in parts by weight: 50 parts of calcium stearate, 15 parts of zinc stearate and 35 parts of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester.
The silicone master batch comprises the following components in parts by weight: 15 parts of low-density polyethylene, 35 parts of silicone oil and 50 parts of silicon dioxide. Wherein the low-density polyethylene has a molecular weight of 2 ten thousand and a melt index of 8g/10 min; the silicone oil is dimethyl silicone oil; the silicon dioxide is precipitated silicon dioxide with the mesh number of 5000 meshes.
The material was prepared in the same manner as described in example 1.
The marine low-smoke halogen-free oil-proof high-performance power cable material prepared in the embodiment is subjected to performance test, and the test results are shown in table 1.
Example 3:
the embodiment provides a low-smoke halogen-free oil-proof high-performance power cable material for ships and a preparation method thereof, wherein the material comprises the following components in parts by weight: 10 parts of thermoplastic elastomer A, 30 parts of thermoplastic elastomer B, 5 parts of ethylene-ethyl acrylate copolymer, 30 parts of aluminum hydroxide, 1 part of stabilizer and 1 part of silicone master batch.
The content of ethyl acrylate in the ethylene-ethyl acrylate copolymer was 30 wt%.
The thermoplastic elastomer (TPE) A comprises the following components in parts by weight: 10 parts of ethylene-propylene copolymer, 1 part of ethylene-octylene copolymer, 20 parts of polyethylene and 30 parts of polypropylene. Wherein the molecular weight of the ethylene-propylene copolymer is 15 ten thousand, the Mooney viscosity (100 ℃) is 50, and the hardness is Shore A45; the molecular weight of the ethylene-octylene copolymer is 10 ten thousand, and the melt index (190 ℃, 2.16kg) is 1.0g/10 min; the polyethylene is low-density polyethylene, the molecular weight is 12 ten thousand, and the melt index (190 ℃, 2.16kg) is 2.0g/10 min; the polypropylene is silicon-free co-polypropylene, the molecular weight is 11 ten thousand, and the melt index (190 ℃, 2.16kg) is 2.5g/10 min.
The thermoplastic elastomer (TPE) B comprises the following components in parts by weight: 20 parts of ethylene-propylene and a small amount of non-conjugated diene terpolymer, 15 parts of hydrogenated styrene-butadiene-styrene block copolymer, 30 parts of polyethylene and 25 parts of white oil. Wherein the terpolymer of ethylene-propylene and a small amount of non-conjugated diene has the molecular weight of 10 ten thousand, the Mooney viscosity (100 ℃) of 50 and the hardness of Shore A35; the molecular weight of the hydrogenated styrene-butadiene-styrene block copolymer is 12 ten thousand, the butadiene content is 40 percent, and the styrene content is 60 percent; the polyethylene is low-density polyethylene, the molecular weight is 12 ten thousand, and the melt index (190 ℃, 2.16kg) is 2.0g/10 min; the molecular weight of the white oil is 360, and the kinematic viscosity (at 40 ℃) is 30 square meters per second; the aluminum hydroxide is prepared by a Bayer-sintering combination method, and the mesh number is 6000.
The stabilizer comprises the following components in parts by weight: 40 parts of calcium stearate, 5 parts of zinc stearate and 30 parts of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester.
The silicone master batch comprises the following components in parts by weight: 10 parts of low-density polyethylene, 20 parts of silicone oil and 30 parts of silicon dioxide. Wherein the low-density polyethylene has a molecular weight of 2 ten thousand and a melt index of 8g/10 min; the silicone oil is dimethyl silicone oil; the silicon dioxide is precipitated silicon dioxide with the mesh number of 5000 meshes.
The material was prepared in the same manner as described in example 1.
The marine low-smoke halogen-free oil-proof high-performance power cable material prepared in the embodiment is subjected to performance test, and the test results are shown in table 1.
Example 4:
the embodiment provides a low-smoke halogen-free oil-proof high-performance power cable material for ships and a preparation method thereof, wherein the material comprises the following components in parts by weight: 13 parts of thermoplastic elastomer A, 25 parts of thermoplastic elastomer B, 20 parts of ethylene-ethyl acrylate copolymer, 35 parts of aluminum hydroxide, 5 parts of stabilizer and 5 parts of silicone master batch.
The content of ethyl acrylate in the ethylene-ethyl acrylate copolymer is 20 wt%.
The thermoplastic elastomer (TPE) A comprises the following components in parts by weight: 30 parts of ethylene-propylene copolymer, 10 parts of ethylene-octylene copolymer, 40 parts of polyethylene and 50 parts of polypropylene. Wherein the molecular weight of the ethylene-propylene copolymer is 15 ten thousand, the Mooney viscosity (100 ℃) is 50, and the hardness is Shore A45; the molecular weight of the ethylene-octylene copolymer is 10 ten thousand, and the melt index (190 ℃, 2.16kg) is 1.0g/10 min; the polyethylene is low-density polyethylene, the molecular weight is 12 ten thousand, and the melt index (190 ℃, 2.16kg) is 2.0g/10 min; the polypropylene is random copolymerization polypropylene, the molecular weight is 11 ten thousand, and the melt index (190 ℃, 2.16kg) is 2.5g/10 min.
The thermoplastic elastomer (TPE) B comprises the following components in parts by weight: 40 parts of ethylene-propylene and a small amount of non-conjugated diene terpolymer, 30 parts of hydrogenated styrene-butadiene-styrene block copolymer, 70 parts of polyethylene and 40 parts of white oil. Wherein the terpolymer of ethylene-propylene and a small amount of non-conjugated diene has the molecular weight of 10 ten thousand, the Mooney viscosity (100 ℃) of 50 and the hardness of Shore A35; the molecular weight of the hydrogenated styrene-butadiene-styrene block copolymer is 12 ten thousand, the butadiene content is 40 percent, and the styrene content is 60 percent; the polyethylene is low-density polyethylene, the molecular weight is 12 ten thousand, and the melt index (190 ℃, 2.16kg) is 2.0g/10 min; the molecular weight of the white oil is 360, and the kinematic viscosity (40 ℃) is 30 square meters per second; the aluminum hydroxide is prepared by a Bayer-sintering combination method, and the mesh number is 6000.
The stabilizer comprises the following components in parts by weight: 60 parts of calcium stearate, 50 parts of zinc stearate and 50 parts of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester.
The silicone master batch comprises the following components in parts by weight: 20 parts of low-density polyethylene, 60 parts of silicone oil and 60 parts of silicon dioxide. Wherein the low-density polyethylene has a molecular weight of 2 ten thousand and a melt index of 8g/10 min; the silicone oil is dimethyl silicone oil; the silicon dioxide is precipitated silicon dioxide with the mesh number of 5000 meshes.
The material was prepared in the same manner as described in example 1.
The marine low-smoke halogen-free oil-proof high-performance power cable material prepared in the embodiment is subjected to performance test, and the test results are shown in table 1.
Comparative example 1:
the comparative example provides a low-smoke halogen-free oil-proof high-performance power cable material for ships and a preparation method thereof, and the preparation raw materials do not contain ethylene-ethyl acrylate copolymer, and the dosage and the preparation method of other materials are the same as those in example 1.
The performance of the prepared marine low-smoke halogen-free oil-proof high-performance power cable material is tested, and the test results are shown in table 1.
Comparative example 2:
the comparative example provides a low-smoke halogen-free oil-proof high-performance power cable material for a ship and a preparation method thereof, and except that the content of ethyl acrylate in the ethylene-ethyl acrylate copolymer is 5 wt% (less than 15 wt%), the use amount of other materials and the preparation method are the same as those in example 1.
The performance of the prepared marine low-smoke halogen-free oil-proof high-performance power cable material is tested, and the test results are shown in table 1.
Comparative example 3:
the comparative example provides a low-smoke halogen-free oil-proof high-performance power cable material for a ship and a preparation method thereof, and except that the content of ethyl acrylate in the ethylene-ethyl acrylate copolymer is 40 wt% (more than 30 wt%), the use amount of other materials and the preparation method are the same as those in example 1.
The performance of the prepared marine low-smoke halogen-free oil-proof high-performance power cable material is tested, and the test results are shown in table 1.
Table 1: tables of results of performance tests on the power cable materials obtained in examples 1 to 4 and comparative examples 1 to 3
Figure BDA0001122489190000201
It can be seen from the results of examples 1-4 and comparative examples 1-3 that the marine power cable material prepared by using the composition of the thermoplastic elastomer a, the thermoplastic elastomer B, the ethylene-ethyl acrylate copolymer, the aluminum hydroxide, the stabilizer and the silicone master batch as raw materials and utilizing the synergistic effect of the ethylene-ethyl acrylate copolymer, the thermoplastic elastomer a and the thermoplastic elastomer B has good flame retardant property, good mechanical property and oil resistance, tensile strength of the marine power cable material can reach more than 20MPa, elongation at break of the marine power cable material can reach more than 270%, and light transmittance in smoke of the marine power cable material can reach more than 96%.
Meanwhile, the marine power cable material prepared by the invention is simple in preparation method process, easy to operate, low in energy consumption and suitable for industrial production.
The applicant states that the present invention is illustrated in detail by the above examples, but the present invention is not limited to the above detailed methods, i.e. it is not meant that the present invention must rely on the above detailed methods for its implementation. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

Claims (22)

1. A power cable material with elongation at break of more than 270% is characterized by comprising the following components in parts by weight:
Figure FDA0002376869620000011
the content of ethyl acrylate in the ethylene-ethyl acrylate copolymer is 15-30 wt%;
the thermoplastic elastomer A comprises the following components in parts by weight:
Figure FDA0002376869620000012
the thermoplastic elastomer B comprises the following components in parts by weight:
Figure FDA0002376869620000013
2. a power cable material according to claim 1, characterized in that the material consists of the following components in parts by weight:
Figure FDA0002376869620000014
Figure FDA0002376869620000021
3. a power cable material according to claim 1, characterized in that the mass ratio of thermoplastic elastomer a and thermoplastic elastomer B is 1: 2.
4. A power cable material according to claim 1, characterized in that the content of ethyl acrylate in the ethylene-ethyl acrylate copolymer is 19 wt%.
5. The power cable material according to claim 1, wherein the ethylene-propylene copolymer has a molecular weight of 10 to 20 ten thousand, a Mooney viscosity at 100 ℃ of 30 to 60, and a hardness of Shore A30 to 60.
6. The power cable material of claim 1, wherein the ethylene-octene copolymer has a molecular weight of 8-15 ten thousand and a melt index of 0.5-3 g/10 min.
7. The power cable material according to claim 1, wherein the polypropylene is a random copolymer polypropylene, the molecular weight is 8-16 ten thousand, and the melt index is 1-6 g/10 min.
8. The power cable material according to claim 1, wherein the ethylene-propylene and non-conjugated diene terpolymer has a molecular weight of 5 to 15 ten thousand, a Mooney viscosity at 100 ℃ of 30 to 70, and a hardness of Shore A20-50.
9. The power cable material according to claim 1, wherein the hydrogenated styrene-butadiene-styrene block copolymer has a molecular weight of 8 to 14 ten thousand, and contains 30 to 60 wt% of butadiene and 40 to 70 wt% of styrene.
10. The power cable material of claim 1, wherein the polyethylene is low density polyethylene, has a molecular weight of 8 to 16 ten thousand and a melt index of 1 to 5g/10 min.
11. The power cable material according to claim 1, wherein the white oil has a molecular weight of 300 to 400 and a kinematic viscosity at 40 ℃ of 15 to 35m2/s。
12. The power cable material as claimed in claim 1, wherein the aluminum hydroxide is aluminum hydroxide prepared by a Bayer-sintering combination method, and the mesh number of the aluminum hydroxide is 4000-8000 mesh.
13. The power cable material of claim 1, wherein the stabilizer is composed of the following components in parts by weight:
40-60 parts of calcium stearate;
5-50 parts of zinc stearate;
30-50 parts of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester.
14. The power cable material of claim 1, wherein the silicone masterbatch is composed of the following components in parts by weight:
10-20 parts of low-density polyethylene;
20-60 parts of silicone oil;
30-60 parts of silicon dioxide.
15. A power cable material according to claim 14, wherein the low density polyethylene has a molecular weight of 1 to 5 ten thousand and a melt index of 5 to 10g/10 min.
16. A power cable material according to claim 14, characterized in that the silicone oil is dimethicone.
17. The power cable material according to claim 14, wherein the silica is prepared by a precipitation method and has a mesh size of 4000-6000 meshes.
18. A method for preparing a power cable material according to any of claims 1-17, characterized in that the method comprises the steps of:
(1) melting and blending the thermoplastic elastomer A, the thermoplastic elastomer B, the ethylene-ethyl acrylate copolymer, the aluminum hydroxide, the stabilizer and the silicone master batch according to the formula ratio by an internal mixer, and then granulating by a double-screw extruder and a single-screw extruder to obtain particles;
(2) extruding the particles obtained in the step (1) into wires through an extruder;
(3) and (3) carrying out irradiation crosslinking on the wire rod obtained in the step (2) by using an electron accelerator to obtain a finished product.
19. The process according to claim 18, wherein the twin-screw extruder in step (1) is divided into six zones, and the operating temperature of each zone is:
the temperature of the first zone is 90-100 ℃, the temperature of the second zone is 100-120 ℃, the temperature of the third zone is 120-140 ℃, the temperature of the fourth zone is 120-140 ℃, the temperature of the fifth zone is 140-150 ℃, and the temperature of the sixth zone is 150-160 ℃.
20. The method according to claim 18, wherein the single screw extruder in the step (1) is divided into five zones, and the operating temperature of each zone is:
the temperature of the first zone is 100-110 ℃, the temperature of the second zone is 110-120 ℃, the temperature of the third zone is 130-140 ℃, the temperature of the fourth zone is 140-150 ℃, and the temperature of the fifth zone is 140-150 ℃.
21. The method according to claim 18, wherein the extruder in the step (2) is divided into four zones, and the operating temperature of each zone is:
the temperature of the first zone is 130-140 ℃, the temperature of the second zone is 140-150 ℃, the temperature of the third zone is 150-180 ℃, and the temperature of the fourth zone is 160-180 ℃.
22. The method according to claim 18, wherein the wire in step (3) is cross-linked by irradiation with an electron accelerator to form a three-dimensional network structure.
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CN101136262A (en) * 2006-08-31 2008-03-05 日立电线株式会社 Flexible non-halogen electric wires
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