CN108586911A - A kind of track cable insulation material of low density polyethylene (LDPE) and preparation method thereof - Google Patents
A kind of track cable insulation material of low density polyethylene (LDPE) and preparation method thereof Download PDFInfo
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- CN108586911A CN108586911A CN201810469068.2A CN201810469068A CN108586911A CN 108586911 A CN108586911 A CN 108586911A CN 201810469068 A CN201810469068 A CN 201810469068A CN 108586911 A CN108586911 A CN 108586911A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2231—Oxides; Hydroxides of metals of tin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2255—Oxides; Hydroxides of metals of molybdenum
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses track cable insulation materials of a kind of low density polyethylene (LDPE) and preparation method thereof.The track cable insulation material of one of which low density polyethylene (LDPE), raw material are formed by following parts by weight：60~80 parts of linear low density polyethylene, 40~50 parts of thermoplastic polyurethane, 10~20 parts of tricresyl phosphate, 40~50 parts of ethylene-propylene diene copolymer, 10~15 parts of calcium stearate, 3~5 parts of alumina silicate, 3~5 parts of magnesia, 8~10 parts of tin oxide, 1~3 part of molybdenum dioxide, 3~5 parts of plasticizer, 10~15 parts of coarse whiting, 2~5 parts of lubricant, 4~6 parts of stabilizer, 1~3 part of antioxidant.The present invention improves the heat resistance and intensity of insulating materials, reduces the ageing time of insulating materials, and high temperature and pressure effect can be kept lower non-degradable for a long time.
Description
Technical field
The invention belongs to track field of cables, a kind of track cable insulation material more particularly to low density polyethylene (LDPE) and its
Preparation method.
Background technology
Cable is mainly made of following 4 part：1. conducting wire center is made of high conductivity material (copper or aluminium).2. insulating
Layer, the insulating materials for being used as cable should have high insulation resistance, high breakdown field strength, low dielectric loss and low
Dielectric constant.Common insulating materials has oil-paper, polyvinyl chloride, polyethylene, crosslinked polyethylene, rubber etc. in cable.3. close
Closure set protects protection insulated wire heart from the damage of machinery, moisture, moisture, chemical substance, light etc..Insulation for moisture-sensitive, one
As use lead or aluminium extrusion sealing sheath.4. coating is protected, to protect sealing sheath from mechanical damage.It is general to use plating
Zinc steel band, steel wire or copper strips, copper wire etc. surround outside sheath as armor and (claim armored cable), and armor plays electric field shielding simultaneously
With the effect for preventing external electromagnetic wave interference.
Volume resistivity is more than on electrotechnics for high molecular material currently, the insulating layer of cable is most commonly used
The material that the substance of 109 Ω cm is constituted is known as insulating materials, that is, for making device that can electrically prevent electric current
By material.Crosslinked polyethylene has excellent dielectric properties and mechanical performance, oneself is widely used in high pressure and super-pressure
In plastic insulating power cable.With the development of super-pressure, extra-high voltage direct-current power transmission and transformation system, the insulation ag(e)ing in operational process
Problem is increasingly severe, oneself becomes the major obstacle that insulated cable develops to super-pressure.When the applied electric field of insulating polymer is strong
When degree reaches 1/10th of breakdown field strength, poplar bundles can be caused in the Electric Power Equipment Insulation to work long hours, reduce electricity
Cable service life.The high voltage power cable insulating materials being made of low density polyethylene (LDPE), by various in During Process of Long-term Operation
The gradual aging of influence of aging action, leads to the decline of the dielectric properties and mechanical performance of material.According to the classification of aging action
Voltage ageing, heat ageing, mechanical aging and Electrochemical Ageing can be divided into.Wherein heat ageing is the main of PE cable insulation damage
Inducement, different thermal aging times and condition can lead to the difference of polyethylene inner molecular structure, and then influence its space charge spy
Property.
Studies have shown that under DC electric field effect, it is easy to form space charge in polymer insulation, and space charge can make
Field distribution is distorted, and aggravates polymer insulation aging, and the aging of material results in the decline of material electric property.Polymer
Space-charge is mainly by the same polarity space charge and insulator for entering sunken carrier or transportable current-carrying of electrode injection
Organic or inorganic impurity ionizes the heteropolarity electricity of generation under electric field action.In order to inhibit the formation of space charge, need to poly-
It is ethylene modified to change distribution of space charge to change trap energy therein and distribution, lower distortion probability, improves polymer
Dielectric properties reduce polymer insulation aging, and do not influence the processing performance of polymer simultaneously.
Bentonite is also known as palygorskite or Palygorskite, is a kind of clay pit of zeopan containing Shuifu County of tool chain layer structure
Object.Its structure belongs to 2：1 type clay mineral.Each 2：In 1 unit structure layer, tetrahedron chip angle top is run every set a distance direction
, forming layer chain.Bentonite stone clay refers to a kind of clay mineral using bentonite stone as key component.Bentonite stone is one
Kind crystalloid is hydrated alumina magnesia silicate, has unique layer chain structure feature, there is crystal lattice, crystal in its structure
In contain variable amount of Na+, Ca2+, Fe3+, Al3+, crystal is in needle-shaped, threadiness or fiber set shape.Bentonite stone has
The good colloidal natures such as unique dispersion, high temperature resistant, salt resistance alkali and higher adsorption bleaching ability.With between chain structure
Intermediate structure between layer structure.Due to the unique crystal structure of bentonite stone, with many special materializations and
Processing performance.Main physical and chemical performance and processing performance have：Cationic interchangeability, water imbibition, adsorption bleaching, big specific surface
Product and colloid index and expansion capacity.The current bentonite stone Resource management in China is entirely capable of meeting industrial demand, and
There is obvious performance advantage compared with the Resource Properties of other various countries of the world.Bentonite stone has preferable draw ratio and rich
Rich inner duct is both preferable reinforcing material has fire retardation again, loses constitution water at high temperature and generates vapor, can
With blocking oxygen, and the oxide-isolation layer based on magnesia, Al2O3 of better heat stability can be generated.
Poletene/lamina material has certain advantage, and mainly lighter than Conventional filler compound, density is relatively low, tool
There are higher heat resistance, high intensity, high-modulus, high gas-obstructing character and the lower coefficient of expansion, electricity can be widely used in
Son, household electrical appliances, power industry.
Invention content
It is above-mentioned to solve the present invention provides track cable insulation material of a kind of low density polyethylene (LDPE) and preparation method thereof
Technical problem.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of track cable insulation material of low density polyethylene (LDPE), is made of by weight following raw material：Linea low density
60~80 parts of polyethylene, 40~50 parts of thermoplastic polyurethane, 10~20 parts of tricresyl phosphate, 40~50 parts of ethylene-propylene diene copolymer,
10~15 parts of calcium stearate, 3~5 parts of alumina silicate, 3~5 parts of magnesia, 8~10 parts of tin oxide, 1~3 part of molybdenum dioxide, plasticising
3~5 parts of agent, 10~15 parts of coarse whiting, 2~5 parts of lubricant, 4~6 parts of stabilizer, 1~3 part of antioxidant.
Preferably, the track cable insulation material of a kind of low density polyethylene (LDPE), is made of by weight following raw material：Linearly
60 parts of low density polyethylene (LDPE), 40 parts of thermoplastic polyurethane, 10 parts of tricresyl phosphate, 40 parts of ethylene-propylene diene copolymer, calcium stearate 10
It is part, 3 parts of alumina silicate, 3 parts of magnesia, 8 parts of tin oxide, 1 part of molybdenum dioxide, 3 parts of plasticizer, 10 parts of coarse whiting, 2 parts of lubricant, steady
Determine 4 parts of agent, 1 part of antioxidant.
Preferably, the track cable insulation material of a kind of low density polyethylene (LDPE), is made of by weight following raw material：Linearly
70 parts of low density polyethylene (LDPE), 45 parts of thermoplastic polyurethane, 15 parts of tricresyl phosphate, 45 parts of ethylene-propylene diene copolymer, calcium stearate
12.5 parts, 4 parts of alumina silicate, 4 parts of magnesia, 9 parts of tin oxide, 2 parts of molybdenum dioxide, 4 parts of plasticizer, 12.5 parts of coarse whiting, lubricant
3.5 parts, 5 parts of stabilizer, 2 parts of antioxidant.
Preferably, the track cable insulation material of a kind of low density polyethylene (LDPE), is made of by weight following raw material：Linearly
80 parts of low density polyethylene (LDPE), 50 parts of thermoplastic polyurethane, 20 parts of tricresyl phosphate, 50 parts of ethylene-propylene diene copolymer, calcium stearate 15
It is part, 5 parts of alumina silicate, 5 parts of magnesia, 10 parts of tin oxide, 3 parts of molybdenum dioxide, 5 parts of plasticizer, 15 parts of coarse whiting, 5 parts of lubricant, steady
Determine 6 parts of agent, 3 parts of antioxidant.
Preferably, the lubricant is microcrystalline wax.
Preferably, the plasticizer phthalic acid two (2- ethyl hexyls) ester.
Preferably, the antioxidant chooses hindered phenol antioxidant.
A kind of preparation method of the track cable insulation material of low density polyethylene (LDPE), which is characterized in that include the following steps：
(1) each component in above-mentioned raw materials is taken by weight, and is uniformly mixed；
(2) raw material of gained in step (1) is handled by kneader kneading；
(3) the raw material input double screw extruder of gained in step (2) is subjected to extruding pelletization；
(4) granulation of gained in step (3) is poly- to get required low-density through air-cooled, screening magnetic separation, metering, packaging
The track cable insulation material of ethylene.
Beneficial effects of the present invention：
The present invention improves the heat resistance and intensity of insulating materials, reduces the ageing time of insulating materials, can keep high
Warm high pressure effect is lower non-degradable for a long time.
Specific implementation mode
The embodiment of the present invention is described in detail below, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.
Embodiment 1
A kind of track cable insulation material of low density polyethylene (LDPE), is made of by weight following raw material：
60 parts of linear low density polyethylene, 40 parts of thermoplastic polyurethane, 10 parts of tricresyl phosphate, ethylene-propylene diene copolymer 40
Part, 10 parts of calcium stearate, 3 parts of alumina silicate, 3 parts of magnesia, 8 parts of tin oxide, 1 part of molybdenum dioxide, 3 parts of plasticizer, 10 parts of coarse whiting,
2 parts of lubricant, 4 parts of stabilizer, 1 part of antioxidant.
Above-mentioned lubricant is microcrystalline wax.
Above-mentioned plasticizer phthalic acid two (2- ethyl hexyls) ester.
Above-mentioned antioxidant chooses hindered phenol antioxidant.
A kind of preparation method of the track cable insulation material of low density polyethylene (LDPE), includes the following steps：
(1) each component in above-mentioned raw materials is taken by weight, and is uniformly mixed；
(2) raw material of gained in step (1) is handled by kneader kneading；
(3) the raw material input double screw extruder of gained in step (2) is subjected to extruding pelletization；
(4) granulation of gained in step (3) is poly- to get required low-density through air-cooled, screening magnetic separation, metering, packaging
The track cable insulation material of ethylene.
Following embodiment is differed only in embodiment 1：
Embodiment 2
A kind of track cable insulation material of low density polyethylene (LDPE), is made of by weight following raw material：
70 parts of linear low density polyethylene, 45 parts of thermoplastic polyurethane, 15 parts of tricresyl phosphate, ethylene-propylene diene copolymer 45
Part, 12.5 parts of calcium stearate, 4 parts of alumina silicate, 4 parts of magnesia, 9 parts of tin oxide, 2 parts of molybdenum dioxide, 4 parts of plasticizer, coarse whiting
12.5 parts, 3.5 parts of lubricant, 5 parts of stabilizer, 2 parts of antioxidant.
Embodiment 3
A kind of track cable insulation material of low density polyethylene (LDPE), is made of by weight following raw material：
80 parts of linear low density polyethylene, 50 parts of thermoplastic polyurethane, 20 parts of tricresyl phosphate, ethylene-propylene diene copolymer 50
Part, 15 parts of calcium stearate, 5 parts of alumina silicate, 5 parts of magnesia, 10 parts of tin oxide, 3 parts of molybdenum dioxide, 5 parts of plasticizer, coarse whiting 15
Part, 5 parts of lubricant, 6 parts of stabilizer, 3 parts of antioxidant.
The embodiments of the present invention described above are not intended to limit the scope of the present invention, any in the present invention
Spirit and principle within made by modifications, equivalent substitutions and improvements etc., should be included in the claim protection model of the present invention
Within enclosing.
Claims (8)
1. a kind of track cable insulation material of low density polyethylene (LDPE), which is characterized in that be made of by weight following raw material：Line
60~80 parts of low density polyethylene (LDPE) of property, 40~50 parts of thermoplastic polyurethane, 10~20 parts of tricresyl phosphate, ethylene-propylene diene copolymer 40
~50 parts, 10~15 parts of calcium stearate, 3~5 parts of alumina silicate, 3~5 parts of magnesia, 8~10 parts of tin oxide, molybdenum dioxide 1~3
Part, 3~5 parts of plasticizer, 10~15 parts of coarse whiting, 2~5 parts of lubricant, 4~6 parts of stabilizer, 1~3 part of antioxidant.
2. the track cable insulation material of low density polyethylene (LDPE) according to claim 1, which is characterized in that by following raw material
It forms by weight：60 parts of linear low density polyethylene, 40 parts of thermoplastic polyurethane, 10 parts of tricresyl phosphate, EPDM
40 parts of glue, 10 parts of calcium stearate, 3 parts of alumina silicate, 3 parts of magnesia, 8 parts of tin oxide, 1 part of molybdenum dioxide, 3 parts of plasticizer, coarse whiting
10 parts, 2 parts of lubricant, 4 parts of stabilizer, 1 part of antioxidant.
3. the track cable insulation material of low density polyethylene (LDPE) according to claim 1, which is characterized in that by following raw material
It forms by weight：70 parts of linear low density polyethylene, 45 parts of thermoplastic polyurethane, 15 parts of tricresyl phosphate, EPDM
45 parts of glue, 12.5 parts of calcium stearate, 4 parts of alumina silicate, 4 parts of magnesia, 9 parts of tin oxide, 2 parts of molybdenum dioxide, 4 parts of plasticizer, again
12.5 parts of calcium, 3.5 parts of lubricant, 5 parts of stabilizer, 2 parts of antioxidant.
4. the track cable insulation material of low density polyethylene (LDPE) according to claim 1, which is characterized in that by following raw material
It forms by weight：80 parts of linear low density polyethylene, 50 parts of thermoplastic polyurethane, 20 parts of tricresyl phosphate, EPDM
50 parts of glue, 15 parts of calcium stearate, 5 parts of alumina silicate, 5 parts of magnesia, 10 parts of tin oxide, 3 parts of molybdenum dioxide, 5 parts of plasticizer, coarse whiting
15 parts, 5 parts of lubricant, 6 parts of stabilizer, 3 parts of antioxidant.
5. the track cable insulation material of low density polyethylene (LDPE) according to claim 1, which is characterized in that the lubricant
For microcrystalline wax.
6. the track cable insulation material of low density polyethylene (LDPE) according to claim 1, which is characterized in that the plasticizer
For phthalic acid two (2- ethyl hexyls) ester.
7. the track cable insulation material of low density polyethylene (LDPE) according to claim 1, which is characterized in that described anti-oxidant
Hindered phenol antioxidant is chosen in agent.
8. the preparation method of the track cable insulation material of the low density polyethylene (LDPE) as described in claim 1-4 any one,
It is characterized in that, includes the following steps：
(1) each component in above-mentioned raw materials is taken by weight, and is uniformly mixed；
(2) raw material of gained in step (1) is handled by kneader kneading；
(3) the raw material input double screw extruder of gained in step (2) is subjected to extruding pelletization；
(4) by the granulation of gained in step (3) through air-cooled, screening magnetic separation, metering, packaging to get required low density polyethylene (LDPE)
Track cable insulation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810469068.2A CN108586911A (en) | 2018-05-16 | 2018-05-16 | A kind of track cable insulation material of low density polyethylene (LDPE) and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810469068.2A CN108586911A (en) | 2018-05-16 | 2018-05-16 | A kind of track cable insulation material of low density polyethylene (LDPE) and preparation method thereof |
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| CN108586911A true CN108586911A (en) | 2018-09-28 |
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| CN201810469068.2A Pending CN108586911A (en) | 2018-05-16 | 2018-05-16 | A kind of track cable insulation material of low density polyethylene (LDPE) and preparation method thereof |
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| CN110317387A (en) * | 2019-07-12 | 2019-10-11 | 安徽电缆股份有限公司 | A kind of heat-resistant fireproof cable material and preparation method thereof |
| CN111732832A (en) * | 2020-07-18 | 2020-10-02 | 扬中市宏为电缆材料有限公司 | Irradiation crosslinking low-smoke halogen-free insulating material for photovoltaic cable and preparation method thereof |
| WO2020244084A1 (en) * | 2019-06-06 | 2020-12-10 | 扬州好管家科技信息咨询有限公司 | Heat-resistant flexible polymer composite insulating material formula containing polyurethane |
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| CN111732832A (en) * | 2020-07-18 | 2020-10-02 | 扬中市宏为电缆材料有限公司 | Irradiation crosslinking low-smoke halogen-free insulating material for photovoltaic cable and preparation method thereof |
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Application publication date: 20180928 |