AU2020103074A4 - Preparation method of semi-conductive shielding material for polypropylene insulating cable - Google Patents

Preparation method of semi-conductive shielding material for polypropylene insulating cable Download PDF

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AU2020103074A4
AU2020103074A4 AU2020103074A AU2020103074A AU2020103074A4 AU 2020103074 A4 AU2020103074 A4 AU 2020103074A4 AU 2020103074 A AU2020103074 A AU 2020103074A AU 2020103074 A AU2020103074 A AU 2020103074A AU 2020103074 A4 AU2020103074 A4 AU 2020103074A4
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polypropylene
semi
shielding material
conductive shielding
preparation
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Jinliang He
Jun Hu
Qi Li
Pengfei Meng
Lin Peng
Chao Yuan
Yao ZHOU
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Tsinghua University
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Tsinghua University
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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
    • 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
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/005—Stabilisers against oxidation, heat, light, ozone
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • 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
    • C08L23/06—Polyethene
    • 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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • 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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/14—Copolymers of propene
    • 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
    • H01B3/002—Inhomogeneous material in general
    • H01B3/004—Inhomogeneous material in general with conductive additives or conductive layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0208—Cables with several layers of insulating material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/027—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of semi-conducting layers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/001—Conductive additives
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/06—Waxes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0291—Disposition of insulation comprising two or more layers of insulation having different electrical properties

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Conductive Materials (AREA)

Abstract

The disclosure relates to a preparation method of a semi-conductive shielding material for a polypropylene insulating cable, belonging to technical field of power equipment. The material adopts a polypropylene-based resin, conductive carbon black, an antioxidant and a lubricating agent, and is prepared by a melt blending method. The composite material prepared by the method has low volume resistivity, good mechanical property and good thermal property, and meets requirements as the semi-conductive shielding material of the polypropylene insulating cable. By only adding a small amount of carbon black, the conductive shielding material prepared by the method can reach low volume resistivity and has good ductility and high melting point to ensure normal work in the process of cable operation. Furthermore, the disclosure uses the polypropylene-based resin as the substrate of the semi-conductive shielding material, which has good compatibility with the polypropylene insulating material and can be effectively applied to production of polypropylene insulating direct-current cables and alternating-current cables. 1 1/1 FIG.1 1

Description

1/1
FIG.1
PREPARATION METHOD OF SEMI-CONDUCTIVE SHIELDING MATERIAL FOR POLYPROPYLENE INSULATING CABLE TECHNICAL FIELD
[0001J The disclosure relates to a preparation method of a semi-conductive
shielding material for a polypropylene insulating cable, belonging to the technical
field of power equipment.
BACKGROUND
[0002J In order to solve the problems that in the traditional power transmission,
stability is poor and overhead lines occupy a lot of land resources, direct-current
transmission is now a more popular way for electric energy transmission. A flexible
direct-current transmission system is an important development direction for
direct-current transmission, which will be of great significance in the transmission of
new energy generation and even long-distance transmission. In order to reduce the
impact of environmental factors on the system, the use of cables can effectively
improve the safety and reliability of the flexible direct-current transmission system.
At present, the cross-linked polyethylene (XLPE) cable is a widely used
direct-current plastic cable. However, cross-linked polyethylene (XLPE) has the
disadvantages of non-degradation and difficult recovery, which can cause a certain
environmental pollution. At present, researches on environmentally-friendly
polypropylene insulating cables have been carried out at home and abroad.
[0003J The diagram of the cross section of the cable is shown in Fig. 1. From the
inside to the outside, the cable includes a conductor core 1, an inner shielding layer 2,
an insulating layer 3, an outer shielding layer 4, a metal mesh wire 5 and a sheath 6.
It can be seen from the drawing that if the conductor core 1 and the insulating layer 3
are in direct contact, the existence of the metal bulges and air gaps of the conductor core 1 can cause partial discharge under the action of a high electric field, and then electric branches will be generated in the insulating layer 3, the electric branches will be continuously developed and eventually the insulating layer 3 will be broken down. As a very important structure in the cable, the semi-conductive shielding layer connects the metal and the insulating layer, so that each layer in the cable is in close contact, which can effectively prevent the generation of air gaps and eliminate the discharge caused by the possible bulges on the conductor surface. The semi-conductive shielding layer takes the functions of providing a smooth, continuous and equipotential connection interface for the insulating layer and the conductor layer, and balances the electric field in the insulating layer, and has an important impact on the operation life of the cables.
SUMMARY
[0004] The objective of the disclosure is to provide a preparation method of a semi-conductive shielding material for a polypropylene insulating cable to cooperatively product a plastic cable using polypropylene as an insulating material so that the prepared semi-conductive shielding material is suitable for an insulating layer of a polypropylene insulating cable, and has low volume resistivity, good mechanical property and good thermal property, and can be well compatible with a polypropylene insulating layer.
[0005] The disclosure provides a preparation method of a semi-conductive shielding material for a polypropylene insulating cable, the preparation method comprising the following steps:
[0006] (1) mutually and uniformly mixing a polypropylene-based resin, conductive carbon black, an antioxidant and a lubricating agent in parts by weight to obtain a mixture:
[0007] polypropylene-based resin 100 parts
[0008] conductive carbon black 5~40 parts
[0009] antioxidant 0.5~5 parts
[0010] lubricating agent 2~8 parts
[0011] (2) adding the mixture obtained in step (1) into a mixer to undergo melt
blending for 7~15 min at 140~23 0 °C and at a rotation speed of 40~60 r/min to obtain
the semi-conductive shielding material for the polypropylene insulating cable.
[0012] In the above preparation method, the polypropylene-based resin is
polypropylene or ethylene-propylene copolymer, or a mixture of polypropylene and
ethylene-propylene copolymer, and the mixing mass ratio is polypropylene
ethylene-propylene copolymer--1: (0.05-20).
[0013] In the above preparation method, the polypropylene-based resin is a
mixture of polypropylene and polyethylene, and the mass ratio of polypropylene to
polyethylene in the mixture is polypropylene : polyethylene= 1: (0.05-20).
[0014] In the above preparation method, the antioxidant is antioxidant 1010 or
antioxidant 300.
[0015] In the above preparation method, the lubricating agent is one of sodium
stearate, zinc stearate or microcrystalline wax.
[0016] According to the preparation method of the semi-conductive shielding
material for the polypropylene insulating cable provided by the disclosure,
conductive carbon black and other additives are added into the polypropylene-based
resin so that the composite material has the semiconductor characteristic of low
resistivity. Using the polypropylene-based resin as the substrate so that the prepared
semi-conductive shielding material has good compatibility with the polypropylene
insulating layer, which is conducive to interface bonding. In addition, the
polypropylene-based resin used in the disclosure has good ductility and high melting
point, which ensures that the semi-conductive shielding layer material has good
mechanical and thermal properties in cable operation. The semi-conductive shielding
material prepared by the method can be applied to not only polypropylene insulated
direct-current cables but also to polypropylene insulated alternating-current cables.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Fig. 1 is a diagram of a cross section of a cable.
[0018] In Fig.1, conductor core 1, inner shielding layer 2, insulating layer 3, outer
shielding layer 4, metal mesh wire 5, sheath 6
DESCRIPTION OF THE EMBODIMENTS
[0019] A preparation method of a semi-conductive shielding material for a
polypropylene insulating cable provided by the disclosure comprises the following
steps:
[0020] (1) mutually and uniformly mixing a polypropylene-based resin, conductive
carbon black, an antioxidant and a lubricating agent in parts by weight to obtain a
mixture:
[0021] polypropylene-based resin 100 parts
[0022] conductive carbon black 5~40 parts
[0023] antioxidant 0.5~5 parts
[0024] lubricating agent 2~8 parts
[0025] (2) adding the mixture obtained in step (1) into a mixer to undergo melt
blending for 7~15 min at 140~230°C and at a rotation speed of 40~60 r/min to obtain
the semi-conductive shielding material for the polypropylene insulating cable.
[0026] In the above preparation method, the polypropylene-based resin is
polypropylene or ethylene-propylene copolymer, or a mixture of polypropylene and
ethylene-propylene copolymer, and the mixing mass ratio is polypropylene
ethylene-propylene copolymer--1: (0.05-20).
[0027] In the above preparation method, the polypropylene-based resin is a
mixture of polypropylene and polyethylene, and the mass ratio of polypropylene to
polyethylene in the mixture is polypropylene : polyethylene= 1: (0.05-20).
[0028] In the above preparation method, the antioxidant is antioxidant 1010 or
antioxidant 300.
[0029] In the above preparation method, the lubricating agent is one of sodium
stearate, zinc stearate or microcrystalline wax.
[0030] The technical solution of the disclosure will be described in more detail through the following examples, but is not limited thereto.
[0031] For semi-conductive shielding material for the polypropylene insulating cable obtained by the following examples, the volume resistivity test and assessment method adopts GB/T 3048.3-2007 standard, the mechanical property test and assessment method adopts GB/T 1040-2006 standard, and the thermal property test and assessment method adopts GB/T 19466.3-2007 standard.
[0032] Next, examples of the method of the disclosure will be described.
[0033] Example 1
[0034] (1) 45 g of a mixture of polypropylene and polyethylene (a mixing ratio was polypropylene : polyethylene=9:1), 8 g of Cabot carbon black VXC72R, 0.5g of antioxidant 1010 and 2 g of lubricating agent sodium stearate were mutually and uniformly mixed.
[0035] (2) The mixture obtained in step (1) was added into a mixer to undergo melt blending for 12 min at 200°C and at a rotation speed of 60 r/min to obtain the semi-conductive shielding material for the polypropylene insulating cable. The performances are shown in Table 1.
[0036] Table 1 Performance parameter Volume Elastic Tensible Elongation Melting Performance resistivity modulus yield strength at break point material (Qcm) (MPa) (MPa) (%) (°C) 23°C: 46 Example 1 208 27.1 1199 141.3 90°C: 158
[0037] It can be seen from table 1 that each performance index of the semi-conductive shielding material for the polypropylene insulating cable obtained by the above example of the disclosure meets the requirements of the semi-conductive shielding material for a cable specified in the standard JB/T 10738-2007 and the standard GB11017-1 ~ 3-2002.
[0038] Example 2
[0039] (1) 50 g of ethylene and propylene copolymer, 2.5 g of conductive carbon black, 0.25g of antioxidant 300 and 1 g of lubricating agent microcrystalline wax were mutually and uniformly mixed.
[0040] (2) The mixture obtained in step (1) was added into a mixer to undergo melt
blending for 7 min at 140°C and at a rotation speed of 45 r/min to obtain the
semi-conductive shielding material for the polypropylene insulating cable.
[0041] Example 3
[0042] (1) 40 g of a mixture of polypropylene and ethylene and propylene copolymer (a mixing ratio was polypropylene : ethylene and propylene copolymer =1:20), 16 g of conductive carbon black, 2 g of antioxidant 1010 and 3.2 g of
lubricating agent microcrystalline wax were mutually and uniformly mixed.
[0043] (2) The mixture obtained in step (1) was added into a mixer to undergo melt
blending for 15 min at 190°C and at a rotation speed of 40 r/min to obtain the
semi-conductive shielding material for the polypropylene insulating cable.
[0044] Example 4
[0045] (1) 50 g of polypropylene, 10 g of conductive carbon black, 1.5 g of antioxidant 300 and 2.5 g of lubricating agent zinc stearate were mutually and uniformly mixed.
[0046] (2) The mixture obtained in step (1) was added into a mixer to undergo melt
blending for 12 min at 230°C and at a rotation speed of 60 r/min to obtain the
semi-conductive shielding material for the polypropylene insulating cable.
[0047] Example 5
[0048] (1) 50 g of a mixture of polypropylene and ethylene (a mixing ratio was polypropylene : polyethylene =1:0.05), 2.5 g of conductive carbon black, 2 g of antioxidant 300 and 1.2 g of lubricating agent microcrystalline wax were mutually and uniformly mixed.
[0049] (2) The mixture obtained in step (1) was added into a mixer to undergo melt
blending for 10 min at 190°C and at a rotation speed of 50 r/min to obtain the
semi-conductive shielding material for the polypropylene insulating cable.
[0050] Example 6
[0051] (1) 50 g of ethylene and propylene copolymer, 15 g of conductive carbon black, 0.25 g of antioxidant 1010 and 3.8 g of lubricating agent sodium stearate were mutually and uniformly mixed.
[0052] (2) The mixture obtained in step (1) was added into a mixer to undergo melt blending for 14 min at 150°C and at a rotation speed of 55 r/min to obtain the semi-conductive shielding material for the polypropylene insulating cable.
[0053] Example 7
[0054] (1) 50 g of a mixture of polypropylene and polyethylene (a mixing ratio was polypropylene : polyethylene =1:20), 4 g of conductive carbon black, 2 g of antioxidant 300 and 2.8 g of lubricating agent microcrystalline wax were mutually and uniformly mixed.
[0055] (2) The mixture obtained in step (1) was added into a mixer to undergo melt blending for 10 min at 150°C and at a rotation speed of 50 r/min to obtain the semi-conductive shielding material for the polypropylene insulating cable.
[0056] Example 8
[0057] (1) 50 g of a mixture of polypropylene and ethylene and propylene copolymer (a mixing ratio was polypropylene : ethylene and propylene copolymer =1:0.05), 10 g of conductive carbon black, 1.5 g of antioxidant 1010 and 3 g of lubricating agent microcrystalline wax were mutually and uniformly mixed.
[0058] (2) The mixture obtained in step (1) was added into a mixer to undergo melt blending for 15 min at 170°C and at a rotation speed of 50 r/min to obtain the semi-conductive shielding material for the polypropylene insulating cable.
[0059] Example 9
[0060] (1) 50 g of a mixture of polypropylene and ethylene and propylene copolymer (a mixing ratio was polypropylene : ethylene and propylene copolymer =1:1), 10 g of conductive carbon black, 1.5 g of antioxidant 300 and 3 g of lubricating agent microcrystalline wax were mutually and uniformly mixed.
[0061] (2) The mixture obtained in step (1) was added into a mixer to undergo melt blending for 15 min at 180°C and at a rotation speed of 50 r/min to obtain the semi-conductive shielding material for the polypropylene insulating cable.

Claims (5)

Claims WHAT IS CLAIMED IS:
1. A preparation method of a semi-conductive shielding material for a polypropylene insulating cable, the preparation method comprising the following steps:
(1) mutually and uniformly mixing A polypropylene-based resin, conductive carbon black, an antioxidant and a lubricating agent in parts by weight to obtain a mixture:
polypropylene-based resin 100 parts
conductive carbon black 5~40 parts
antioxidant 0.5~5 parts
lubricating agent 2~8 parts
(2) adding the mixture obtained in step (1) into a mixer to undergo melt blending for 7~15 min at 140~230°C and at a rotation speed of 40~60 r/min to obtain the
semi-conductive shielding material for the polypropylene insulating cable.
2. The preparation method according to claim 1, wherein the polypropylene-based resin is polypropylene or ethylene-propylene copolymer, or a mixture of polypropylene and ethylene-propylene copolymer, and the mixing mass ratio is polypropylene : ethylene-propylene copolymer=1: (0.05-20).
3. The preparation method according to claim 1, wherein the polypropylene-based resin is a mixture of polypropylene and polyethylene, and the mass ratio of polypropylene to polyethylene in the mixture is polypropylene polyethylene= 1: (0.05-20).
4. The preparation method according to claim 1, wherein the antioxidant is antioxidant 1010 or antioxidant 300.
5. The preparation method according to claim 1, wherein the lubricating agent is one of sodium stearate, zinc stearate or microcrystalline wax.
AU2020103074A 2020-10-28 2020-10-28 Preparation method of semi-conductive shielding material for polypropylene insulating cable Ceased AU2020103074A4 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113512251A (en) * 2021-05-17 2021-10-19 安徽洁纯生物科技有限公司 Lining barrel and preparation process thereof
CN114213798A (en) * 2021-12-27 2022-03-22 上海新上化高分子材料有限公司 Polypropylene thermoplastic semi-conductive shielding material and preparation method thereof
CN114216926A (en) * 2021-11-18 2022-03-22 深圳供电局有限公司 Rheological property evaluation method of crosslinked semiconductive shielding material
CN114891295A (en) * 2022-06-01 2022-08-12 青岛科技大学 High-voltage direct-current cable and polypropylene semi-conductive shielding material and preparation method thereof
WO2023035369A1 (en) * 2021-09-13 2023-03-16 南方电网科学研究院有限责任公司 Method for preparing semi-conductive shielding material of high-voltage cable on basis of conductive carbon black having high graphitization degree
CN119119634A (en) * 2024-09-12 2024-12-13 南方电网科学研究院有限责任公司 Polypropylene-based semi-conductive shielding material and preparation method thereof, and cable
CN119241951A (en) * 2024-11-12 2025-01-03 东莞市安高瑞新材料科技有限公司 Cable interface bonding modified material and preparation method thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113512251A (en) * 2021-05-17 2021-10-19 安徽洁纯生物科技有限公司 Lining barrel and preparation process thereof
WO2023035369A1 (en) * 2021-09-13 2023-03-16 南方电网科学研究院有限责任公司 Method for preparing semi-conductive shielding material of high-voltage cable on basis of conductive carbon black having high graphitization degree
CN114216926A (en) * 2021-11-18 2022-03-22 深圳供电局有限公司 Rheological property evaluation method of crosslinked semiconductive shielding material
CN114216926B (en) * 2021-11-18 2023-05-16 深圳供电局有限公司 Rheological property evaluation method for crosslinked semiconductive shielding material
CN114213798A (en) * 2021-12-27 2022-03-22 上海新上化高分子材料有限公司 Polypropylene thermoplastic semi-conductive shielding material and preparation method thereof
CN114891295A (en) * 2022-06-01 2022-08-12 青岛科技大学 High-voltage direct-current cable and polypropylene semi-conductive shielding material and preparation method thereof
CN114891295B (en) * 2022-06-01 2023-11-17 青岛科技大学 High-voltage DC cable and polypropylene semiconductive shielding material and preparation method thereof
CN119119634A (en) * 2024-09-12 2024-12-13 南方电网科学研究院有限责任公司 Polypropylene-based semi-conductive shielding material and preparation method thereof, and cable
CN119241951A (en) * 2024-11-12 2025-01-03 东莞市安高瑞新材料科技有限公司 Cable interface bonding modified material and preparation method thereof
CN119241951B (en) * 2024-11-12 2025-10-31 东莞市安高瑞新材料科技有限公司 Cable interface bonding modified materials and their preparation methods

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