CN111269494A - Deep-sea anticorrosive rubber cable and preparation method thereof - Google Patents
Deep-sea anticorrosive rubber cable and preparation method thereof Download PDFInfo
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- CN111269494A CN111269494A CN202010220007.XA CN202010220007A CN111269494A CN 111269494 A CN111269494 A CN 111269494A CN 202010220007 A CN202010220007 A CN 202010220007A CN 111269494 A CN111269494 A CN 111269494A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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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
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
- C08L23/286—Chlorinated polyethylene
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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
- H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
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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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—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)
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- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Insulating Materials (AREA)
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Abstract
The invention discloses a deep sea anticorrosive rubber cable and a preparation method thereof, wherein the deep sea anticorrosive rubber cable comprises the following components in percentage by weight: 50-60% of chlorinated polyethylene and ethylene propylene diene monomer, 10-20% of rubber protection 10, 10-20% of oil, 10-20% of filling material and 5-15% of high polymer ceramic polymer material; wherein the adding ratio of the chlorinated polyethylene to the ethylene propylene diene monomer is 1: 9-5: 5; the materials are mixed and then are glued to obtain the adhesive. Compared with the prior art, the deep-sea anticorrosive rubber cable and the preparation method thereof overcome the defects of poor water absorption resistance and aging resistance of the material CPE, poor tensile strength, oil resistance, flame retardance and the like of the EPDM, and simultaneously complement the advantages of the added high-molecular ceramic polymer material, thereby achieving the functions of corrosion resistance and water resistance.
Description
Technical Field
The invention relates to the technical field of electric wires and cables, in particular to a deep-sea anticorrosive rubber cable and a preparation method thereof.
Background
Submarine cables (submarine cables) are wires wrapped by insulating materials and laid under the sea floor and rivers, and submersible pumps and deep water pumps are used for power supply and signal transmission. The CPE and EPDM materials used according to the prior art can not meet the conventional tests of DIN EN50525-2-21 such as tensile, oil resistance, flame retardance and the like and the special tests of a sheath soaking test, a tensile change rate after soaking, an elongation change rate after soaking and the like. Because the submarine cable is laid out in the deep sea, the submarine cable has the advantages that the submarine cable has strong water pressure resistance, water longitudinal invasion resistance, chemical invasion resistance, salt corrosion resistance and other performances, can bear dynamic pressure under the action of sea waves, pressure during installation and maintenance and the like, can ensure relatively long service life, and has high technical requirements.
In view of the above, there is a need to develop a deep sea anticorrosive rubber cable with excellent corrosion resistance, excellent waterproof performance, tensile strength of aging performance, and excellent oil resistance and flame retardant performance.
Disclosure of Invention
The invention aims to provide a deep-sea anticorrosive rubber cable and a manufacturing method thereof aiming at the defects of the prior art, so that the defects of poor water absorption resistance and aging resistance of CPE (chlorinated polyethylene) and poor tensile strength, oil resistance and flame retardance of EPDM (ethylene-propylene-diene monomer) are overcome, and meanwhile, the advantages of the added high-molecular ceramic polymer material are complementary, and the functions of corrosion resistance and water resistance are achieved.
The technical scheme adopted by the invention to achieve the aim is as follows:
a deep sea anti-corrosion rubber cable comprises the following components in percentage by weight: 50-60% of chlorinated polyethylene and ethylene propylene diene monomer, 10-20% of rubber protection 10, 10-20% of oil, 10-20% of filling material and 5-15% of high polymer ceramic polymer material; wherein the adding ratio of the chlorinated polyethylene to the ethylene propylene diene monomer is 1: 9-5: 5.
Preferably, the chlorinated polyethylene has a chlorine content of 35%, a Shore hardness of less than or equal to 65, a tensile strength of more than or equal to 8MPA and Mooney 75, and the chlorinated polyethylene CPE352J has excellent corrosion resistance, mechanical properties and insulating properties.
Preferably, the ethylene propylene diene monomer rubber is a terpolymer of ethylene, propylene and non-conjugated diene. EPDM722 has a special structure, unsaturated double bonds are mainly used as cross-linking positions, the other unsaturated double bonds cannot be a polymer main chain and can only be side chains, the main polymer chain of EPDM is completely saturated, so that EPDM can resist heat, light and oxygen, especially ozone, EPDM is nonpolar in nature, has resistance to polar solutions and chemicals, low water absorption rate and good insulating and anti-corrosion properties.
Preferably, the rubber protection is prepared by processing selected paraffin, microcrystalline wax and an auxiliary agent, the refractive index at 80 ℃ is 1.42-1.44, and the penetration at 25 ℃ is 10-20. After the rubber protection RW217 product is vulcanized, a tough and compact wax film can be continuously formed on the surface of a rubber product, ozone cracking can be effectively prevented, the migration speed is slow, a long-term protection effect can be formed for the wire and cable industry, the tough and compact wax film is formed, and water and air are effectively isolated.
Preferably, the oil is any one or more of aromatic oil, paraffin oil and naphthenic oil. Because the rubber is a product obtained after vulcanization and crosslinking of hydrocarbon high polymer, the existence of unsaturated double bonds enables chemical reaction activity and the rubber to be easy to react with ozone and chemical substances in the air, and the rubber is aged under the action of light and heat to break the double bonds and lose elasticity, thereby generating cracks; the oil has proper carbon number distribution, can migrate to the surface of the rubber at a proper speed to form a layer of uniform and compact protective film on the surface of the rubber, has the effects of resisting ozone, sunlight, aging and the like on rubber products, and can obviously prolong the service life of the rubber products. In addition, the rubber protective wax can also play a role in lubrication, so that the processing process is convenient, and the appearance of the product is effectively improved. And the oil has good compatibility with rubber, good processability and operability, can improve the processability of rubber, reduce the cost, have good surface finish, and improve the wear resistance and the corrosion resistance.
Preferably, the filler is any one or more of expanded water-blocking yarn, modified graphene oxide polyaniline and PVC. The filler is used for improving the performances of the composite material, such as corrosion resistance, hardness and processability, reducing the cost and increasing the binding capacity between solid and liquid mixtures.
Preferably, the high molecular ceramic polymer material is prepared from the following components in parts by weight: 45 parts of epoxy resin, 10-20 parts of micron-grade alumina ceramic, 5 parts of glass fiber, 10-20 parts of modified aliphatic amine curing agent and 10 parts of polycarboxylate dispersant. The paint has the advantages of corrosion resistance, wear resistance, acid and alkali resistance, capability of being combined with various materials, water resistance, corrosion resistance, long service life, excellent mechanical strength and the like.
The preparation method of the deep sea anticorrosive rubber cable comprises the following steps:
s1: weighing the raw materials of chlorinated polyethylene, ethylene propylene diene monomer, rubber protection , oil, filler and high polymer ceramic polymer material according to a set proportion;
s2: feeding, namely adding chlorinated polyethylene and ethylene propylene diene monomer, adding a filler and a high-molecular ceramic polymer material, mixing, and then sequentially adding rubber protection and oil;
s3: and (3) gluing, wherein the gluing temperature and time are set to be 130 ℃ and 150 ℃ for 15-18 minutes.
Compared with the prior art, the invention has the following advantages:
the deep sea anticorrosive rubber cable and the preparation method thereof overcome the defects of poor water absorption resistance and aging resistance of CPE (chlorinated polyethylene) and poor tensile strength, oil resistance and flame retardance of EPDM (ethylene-propylene-diene monomer), realize advantage complementation and achieve the functions of corrosion resistance and water resistance, fully utilize the advantages of CPE (chlorinated polyethylene), namely good tensile strength, good oil resistance and good flame retardance, and the advantages of EPDM, namely good water absorption resistance and good aging resistance to complement each other, mix the high polymer ceramic polymer material to reinforce the product performance, and the obtained cable can be applied to the deep sea environment to meet the safety requirements of DINEN50525-2-21, and has excellent performances of conventional tests of tensile resistance, oil resistance, flame retardance and the like, as well as a sheath soaking test, a tensile change rate after soaking, an elongation change rate after soaking and the like, wide application prospect and good economic benefit.
The foregoing is a summary of the technical solutions of the present invention, and the present invention is further described below with reference to specific embodiments.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments are described in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1: the deep sea anti-corrosion rubber cable provided by the embodiment comprises the following components in percentage by weight: 50% of chlorinated polyethylene and ethylene propylene diene monomer, 20% of rubber protection, 10% of oil, 10% of filler and 10% of high polymer ceramic polymer material; wherein the adding proportion of the chlorinated polyethylene to the ethylene propylene diene monomer is 1:9 of the adding proportion of the CPE to the EPDM. The chlorinated polyethylene has a chlorine content of 35%, a Shore hardness of less than or equal to 65, a tensile strength of more than or equal to 8MPA and Mooney 75, such as chlorinated polyethylene CPE 352J; ethylene propylene diene monomer is a terpolymer of ethylene, propylene and a non-conjugated diene such as ethylene propylene diene monomer EPDM 722; the rubber protection is prepared by processing selected paraffin, microcrystalline wax and an auxiliary agent, has a refractive index of 1.42-1.44 at 80 ℃ and a penetration of 10-20 at 25 ℃, and can also be rubber protection RW 217; the oil is any one or more of aromatic oil, paraffin oil and naphthenic oil; the filler is any one or more of expanded water-blocking yarn, modified graphene oxide polyaniline and PVC; the high-molecular ceramic polymer material is prepared from the following components in parts by weight: 45 parts of epoxy resin, 10 parts of micron-grade alumina ceramic, 5 parts of glass fiber, 10 parts of modified aliphatic amine curing agent and 10 parts of polycarboxylate dispersant.
The preparation method of the deep sea anticorrosive rubber cable comprises the following steps:
s1: weighing the raw materials of chlorinated polyethylene, ethylene propylene diene monomer, rubber protection , oil, filler and high polymer ceramic polymer material according to a set proportion;
s2: feeding, namely adding chlorinated polyethylene and ethylene propylene diene monomer, adding a filler and a high-molecular ceramic polymer material, mixing, and then sequentially adding rubber protection and oil;
s3: and (3) gluing, wherein the gluing temperature and time are set to be 130 ℃ and 150 ℃ for 15-18 minutes.
Example 2: the deep sea anticorrosive rubber cable and the manufacturing method thereof provided by the embodiment are basically the same as those of the embodiment 1, and the difference is that: the paint comprises the following components in percentage by weight: 55% of chlorinated polyethylene and ethylene propylene diene monomer, 10% of rubber protection, 10% of oil, 10% of filler and 15% of high polymer ceramic polymer material; wherein the adding proportion of the chlorinated polyethylene to the ethylene propylene diene monomer is 2:8 of the adding proportion of the CPE to the EPDM. The high-molecular ceramic polymer material is prepared from the following components in parts by weight: 45 parts of epoxy resin, 20 parts of micron-grade alumina ceramic, 5 parts of glass fiber, 10 parts of modified aliphatic amine curing agent and 10 parts of polycarboxylate dispersant.
Example 3: the deep sea anticorrosive rubber cable and the manufacturing method thereof provided by the embodiment are basically the same as those of the embodiment 1, and the difference is that: the paint comprises the following components in percentage by weight: 50% of chlorinated polyethylene and ethylene propylene diene monomer, 10% of rubber protection, 20% of oil, 15% of filler and 5% of high polymer ceramic polymer material; wherein the addition ratio of the chlorinated polyethylene to the ethylene propylene diene monomer is 3:7 of the addition ratio of CPE to EPDM. The high-molecular ceramic polymer material is prepared from the following components in parts by weight: 45 parts of epoxy resin, 10 parts of micron-grade alumina ceramic, 5 parts of glass fiber, 20 parts of modified aliphatic amine curing agent and 10 parts of polycarboxylate dispersant.
Example 4: the deep sea anticorrosive rubber cable and the manufacturing method thereof provided by the embodiment are basically the same as those of the embodiment 1, and the difference is that: the paint comprises the following components in percentage by weight: 60% of chlorinated polyethylene and ethylene propylene diene monomer, 10% of rubber protection, 10% of oil, 10% of filler and 10% of high polymer ceramic polymer material; wherein the adding proportion of the chlorinated polyethylene to the ethylene propylene diene monomer is 4:6 of the adding proportion of the CPE to the EPDM. The high-molecular ceramic polymer material is prepared from the following components in parts by weight: 45 parts of epoxy resin, 15 parts of micron-grade alumina ceramic, 5 parts of glass fiber, 15 parts of modified aliphatic amine curing agent and 10 parts of polycarboxylate dispersant.
Example 5: the deep sea anticorrosive rubber cable and the manufacturing method thereof provided by the embodiment are basically the same as those of the embodiment 1, and the difference is that: the paint comprises the following components in percentage by weight: 50% of chlorinated polyethylene and ethylene propylene diene monomer, 10% of rubber protection, 10% of oil, 20% of filler and 10% of high polymer ceramic polymer material; wherein the adding proportion of the chlorinated polyethylene to the ethylene propylene diene monomer is 5:5 of the adding proportion of the CPE to the EPDM. The high-molecular ceramic polymer material is prepared from the following components in parts by weight: 45 parts of epoxy resin, 18 parts of micron-grade alumina ceramic, 5 parts of glass fiber, 12 parts of modified aliphatic amine curing agent and 10 parts of polycarboxylate dispersant.
According to the conventional tests of tensile, oil resistance and flame retardance of DINEN50525-2-21 and the sheath soaking test, the specific standards of the test include the following:
the results of the performance testing of examples 1-5 are shown in the following table:
the samples produced from example formulations No. 1-5 were compared to no more than 40% by weight after 100 days of immersion in din en50525-2-21 standard jacket, and the data shows that CPE to EPDM addition ratio of example formulation No. 5 to 5 was completely satisfactory for din en50525-2-21 jacket immersion standard.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention.
Claims (8)
1. The deep sea anticorrosive rubber cable is characterized by comprising the following components in percentage by weight:
50-60% of chlorinated polyethylene and ethylene propylene diene monomer, 10-20% of rubber protection 10, 10-20% of oil, 10-20% of filling material and 5-15% of high polymer ceramic polymer material; wherein the adding ratio of the chlorinated polyethylene to the ethylene propylene diene monomer is 1: 9-5: 5.
2. The deep sea anticorrosive rubber cable of claim 1, wherein the chlorinated polyethylene has a chlorine content of 35%, a Shore hardness of 65 or less, a tensile strength of 8MPA or more, and Mooney 75.
3. The deep sea corrosion resistant rubber cable of claim 1, wherein said ethylene propylene diene monomer is a terpolymer of ethylene, propylene and a non-conjugated diene.
4. The deep sea anticorrosive rubber cable of claim 1, wherein the rubber protection is processed by selecting paraffin, microcrystalline wax and an auxiliary agent, the refractive index at 80 ℃ is 1.42-1.44, and the penetration at 25 ℃ is 10-20.
5. The deep sea anticorrosive rubber cable of claim 1, wherein the oil is any one or more of aromatic oil, paraffin oil and naphthenic oil.
6. The deep sea anticorrosive rubber cable of claim 1, wherein the filler is any one or more of expanded water-blocking yarn, modified graphene oxide polyaniline and PVC.
7. The deep sea anticorrosive rubber cable of claim 1, wherein the high polymer ceramic polymer material is prepared from the following components in parts by weight: 45 parts of epoxy resin, 10-20 parts of micron-grade alumina ceramic, 5 parts of glass fiber, 10-20 parts of modified aliphatic amine curing agent and 10 parts of polycarboxylate dispersant.
8. The method for preparing the deep sea anticorrosive rubber cable according to any one of claims 1 to 7, comprising the following steps:
s1: weighing the raw materials of chlorinated polyethylene, ethylene propylene diene monomer, rubber protection , oil, filler and high polymer ceramic polymer material according to a set proportion;
s2: feeding, namely adding chlorinated polyethylene and ethylene propylene diene monomer, adding a filler and a high-molecular ceramic polymer material, mixing, and then sequentially adding rubber protection and oil;
s3: and (3) gluing, wherein the gluing temperature and time are set to be 130 ℃ and 150 ℃ for 15-18 minutes.
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| CN202010220007.XA CN111269494A (en) | 2020-03-25 | 2020-03-25 | Deep-sea anticorrosive rubber cable and preparation method thereof |
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| CN202010220007.XA CN111269494A (en) | 2020-03-25 | 2020-03-25 | Deep-sea anticorrosive rubber cable and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995809A (en) * | 2020-08-21 | 2020-11-27 | 江西省安安科技有限公司 | Submarine cable filling hard profile and preparation method thereof |
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| CN102516675A (en) * | 2011-11-21 | 2012-06-27 | 安徽蓝德集团股份有限公司 | Mining cable rubber sheath glue |
| CN102827426A (en) * | 2011-06-15 | 2012-12-19 | 远东电缆有限公司 | Low-cost insulating rubber for rubber insulated flexible wires and flexible cables |
| CN104017282A (en) * | 2014-05-06 | 2014-09-03 | 天长市远洋船舶设备有限公司 | Marine high-strength aging-resistant rubber material |
| CN108003540A (en) * | 2017-12-19 | 2018-05-08 | 江苏通用科技股份有限公司 | Improve ethylene propylene diene rubber and the composite material of chlorinated polyethylene rubber compatibility and preparation method thereof |
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2020
- 2020-03-25 CN CN202010220007.XA patent/CN111269494A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102827426A (en) * | 2011-06-15 | 2012-12-19 | 远东电缆有限公司 | Low-cost insulating rubber for rubber insulated flexible wires and flexible cables |
| CN102516675A (en) * | 2011-11-21 | 2012-06-27 | 安徽蓝德集团股份有限公司 | Mining cable rubber sheath glue |
| CN104017282A (en) * | 2014-05-06 | 2014-09-03 | 天长市远洋船舶设备有限公司 | Marine high-strength aging-resistant rubber material |
| CN108003540A (en) * | 2017-12-19 | 2018-05-08 | 江苏通用科技股份有限公司 | Improve ethylene propylene diene rubber and the composite material of chlorinated polyethylene rubber compatibility and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995809A (en) * | 2020-08-21 | 2020-11-27 | 江西省安安科技有限公司 | Submarine cable filling hard profile and preparation method thereof |
| CN111995809B (en) * | 2020-08-21 | 2022-07-01 | 江西省安安科技有限公司 | Submarine cable filling hard profile and preparation method thereof |
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Application publication date: 20200612 |