CN107652512A - A kind of cable insulation material and preparation method thereof - Google Patents

A kind of cable insulation material and preparation method thereof Download PDF

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Publication number
CN107652512A
CN107652512A CN201710922667.0A CN201710922667A CN107652512A CN 107652512 A CN107652512 A CN 107652512A CN 201710922667 A CN201710922667 A CN 201710922667A CN 107652512 A CN107652512 A CN 107652512A
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Prior art keywords
parts
cable insulation
cable
graphene
basalt fibre
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CN201710922667.0A
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Chinese (zh)
Inventor
舒春柳
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Sichuan Lizhi Jiuchuang Intellectual Property Operations Ltd
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Sichuan Lizhi Jiuchuang Intellectual Property Operations Ltd
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Priority to CN201710922667.0A priority Critical patent/CN107652512A/en
Publication of CN107652512A publication Critical patent/CN107652512A/en
Withdrawn legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethene
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/016Additives defined by their aspect ratio
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/02Flame or fire retardant/resistant
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/20Applications use in electrical or conductive gadgets
    • C08L2203/202Applications use in electrical or conductive gadgets use in electrical wires or wirecoating

Abstract

The invention discloses a kind of cable insulation material and preparation method thereof, the cable insulation material is prepared including following parts by weight raw material:10 20 parts of basalt fibre, 0.001 0.003 parts of graphene, 10 20 parts of vinylsiloxane rubber, 50 70 parts of polyethylene, 5 12 parts of modifying agent, 0.1 0.5 parts of crosslinking agent;Described modifying agent includes the hydrogen peroxide and organic acid that mass ratio is 24 ︰ 13;The cable insulation material has excellent insulating properties, heat-resisting quantity and resistance to sparking, for cable, can significantly improve cable quality, cable is applied at higher temperature, high voltage environment.

Description

A kind of cable insulation material and preparation method thereof
Technical field
The present invention relates to cable material field, and in particular to a kind of cable insulation material and preparation method thereof.
Background technology
Cable is to be fabricated to conductor thread core by twisted with one or more wire, then corresponding insulation is imposed on conductor Layer, the wire that outside is wrapped sealing sheath and formed, is mainly made up of core, insulating barrier, screen layer and restrictive coating.Cable has Take ground and space is few;Power supply safety is reliable, and electric shock possibility is small;Be advantageous to improve the power factor of power system;Operation, Maintenance work is simple and convenient;Be advantageous to beautifying city, there is many advantages, such as confidentiality, in being widely used in living and producing Every field.
The effect of insulating barrier is will to be electrically isolated from each other between core and the earth and out of phase core in cable, from And ensure not occurring when conveying electric energy relatively or alternate puncture short.By experiment and long-term use of empirical evidence, Gao Pin In the cable of matter, the material of insulating barrier needs have following performance:Compressive resistance is high;Dielectric loss angle tangent is low;Inverter fed motor Performance is good;Stable chemical performance;It is low temperature resistant;Heat resistance is good;Machining property is good;Service life is grown.Existing cable is exhausted Edge material is broadly divided into several major classes such as oil-paper, rubber, polyethylene, polyvinyl chloride and crosslinked polyethylene, although can meet often The performance requirement of cable is advised, but when for preparing the cable used under particular surroundings, its performance shows slightly deficiency.
Polyethylene(Abbreviation PE)A kind of aggregated obtained thermoplastic resin of ethene, industrially, also including ethene with The copolymer of a small amount of alpha-olefin.Polyethylene is odorless, nontoxic, feel ceraceous, has excellent resistance to low temperature(Minimum temperature in use Reachable -100 ~ -70 °C), chemical stability is good, is resistant to the erosion of most of soda acids, and water imbibition is small, and electrical insulating property is excellent;But Inflammable because single polyvinyl resin material has high temperature poor toughness, not ageing-resistant, not wear-resisting, breakdown voltage is more low to be lacked Fall into, be directly used in the insulating materials of cable, can not meet under special environment condition the needs of to cable material.
The content of the invention
It is an object of the invention to overcome to be currently used for poor heat resistance existing for the polyethylene insulation material of cable, breakdown potential A kind of the defects of forcing down, there is provided cable insulation material and preparation method thereof;Basalt fibre is first modified processing by the present invention, And load very small amount graphene, it is finally mixed and modified with polyethylene, significantly improve the insulating properties of polyethylene, heat-resisting quantity and Electric-breakdown resistance, cable quality significantly improve, and enable cable long-term job applications in high-temperature, high voltage environment.
In order to realize foregoing invention purpose, the invention provides a kind of cable insulation material, including following parts by weight former material Material is prepared:The basalt fibre, the graphene of 0.001-0.003 parts of 10-20 parts, the vinylsiloxane rubber of 10-20 parts, The polyethylene of 50-70 parts, the modifying agent of 5-12 parts, the crosslinking agent of 0.1-0.5 parts.
A kind of cable insulation material of the present invention, not merely with the excellent electrical and heat-resisting quantity of basalt fibre, to poly- Ethene is modified processing, improves the heat-resisting quantity and insulating properties of polyethylene;Also basalt fibre is roughened, Fast-growth of the breakdown channel along basalt fibre interface is prevented, certain effect is pressed with to the breakdown potential for improving insulating materials;And And will be minimal amount of graphene-supported on basalt fibre surface, interface corona and electric discharge phenomena can be effectively prevented, reduce breakdown With the possibility of electrical treeing, and then also to improve insulating materials electrical property there is positive role;Thus, the cable insulation material With excellent insulating properties, heat-resisting quantity and resistance to sparking, for cable, cable quality can be significantly improved, enables cable more Applied in high temperature, high voltage environment.
A kind of above-mentioned cable insulation material, wherein, described modifying agent includes the hydrogen peroxide and have that mass ratio is 2-4 ︰ 1-3 Machine acid;The modifying agent quickly can carry out burn into activation to basalt fibre surface, form rough surface, and be grafted a large amount of living Property group, not only increases load capacity of the basalt fibre to graphene, improves basalt fibre and vinylsiloxane rubber Between chemical bonding and mechanical riveted ability, moreover it is possible to prevent fast-growth of the breakdown channel along basalt fibre interface, improve The breakdown voltage of insulating materials;Described mechanical riveted refers to that matrix material packs tightly the fiber of rough surface by shrinkage stress And caused frictional engagement.
Wherein, described vinylsiloxane rubber is all good to the compatibility of basalt fibre and polyethylene, can increase inorganic material Bonding capability between material and organic material interface, reduce the probability of happening of corona and electrical treeing.
Wherein, the amount of graphene needs to control in prescribed limit, and dosage is excessive, and insulating materials resistivity is greatly reduced, Insulating properties reduces;Dosage is very few, small to insulating materials modifying function, action effect unobvious;Preferably, described graphene is used Measure as 0.002 part.
Wherein, described organic acid is the one or more in formic acid, acetic acid, ethanedioic acid, butene dioic acid, acrylic acid.
A kind of above-mentioned cable insulation material, wherein, described basalt fibre length≤2mm, a diameter of 1-5 μm.
A kind of above-mentioned cable insulation material, wherein, it is 0.1- that percetage by weight is included in described basalt fibre 1.5% nano aluminium oxide, nano aluminium oxide can stop the development of breakdown channel, improve the breakdown strength of basalt fibre;Institute The content for the nano aluminium oxide stated must be controlled in prescribed limit, and its dosage is excessive, and nano aluminium oxide can be caused to make in electric field Played a leading role in, reduce the breakdown strength of basalt fibre on the contrary, dosage is very few, and role is small, to basalt The breakdown strength increasing action of fiber is small;Preferably, the percentage by weight of described nano aluminium oxide is 0.5-1.2%.Wherein, Preferably, a diameter of 2-10nm of described nano aluminium oxide;Diameter is excessive, and compatibility reduces, and the stop to breakdown channel is made With reduction, diameter is too small, is unfavorable for disperseing.
Wherein, it is preferred that described nano aluminium oxide is the alumina whisker that draw ratio is 1.5-3 ︰ 1;Whisker can be embedded in It is more preferable to the barrier effect of breakdown channel in different crystal phase structures;Draw ratio is too small, poor to the barrier effect of breakdown channel, Draw ratio is excessive, and winding or fracture easily occurs, is unfavorable for the modification to basalt fibre.
A kind of above-mentioned cable insulation material, wherein, 0.6-2.8% nano-silica is also included in described basalt fibre SiClx, nano silicon can influence crystalline phase distribution and size in basalt fibre, make crystalline phase distribution in basalt fibre more equal Even, difference in size is smaller, make basalt fibre Inverter fed motor and electrical treeing performance it is more preferable;Described nano silicon Content must be controlled in prescribed limit, and content is excessive, and nano silicon easily gathers, on the contrary to crystalline phase in basalt fibre Distribution impact, make the performance of its Inverter fed motor and electrical treeing reduction, content is too small, on basalt fibre uniformity influence Act on small;Preferably, the percentage by weight of described nano silicon is 1.2-2.1%.
Wherein, it is preferred that the particle diameter of described nano silicon is 5-20nm;Particle diameter is excessive, brilliant in basalt fibre Phase diameter is big, and Inverter fed motor and electrical treeing humidification are reduced;Particle diameter is too small, is unfavorable for disperseing.
Wherein, described crosslinking agent is VTES;Polyethylene can not only be made to be crosslinked with silicon rubber, Formed tridimensional network, make material structure more stable, high temperature resistant and decay resistance are stronger, moreover it is possible to improve basalt fibre with It is interface characteristics between high polymer material, make electronics be not easy to gather, improve the breakdown voltage of material.
In order to realize foregoing invention purpose, further, the invention provides a kind of preparation method of cable insulation material, Comprise the following steps:
(1)Basalt fibre is handled with modifying agent, obtains treated basalt fiber;
(2)By graphene-supported on treated basalt fiber;
(3)Vinylsiloxane rubber is mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtains intermediate;
(4)Extruded after intermediate is well mixed with polyethylene, crosslinking agent with extruder, obtain cable insulation material.
A kind of preparation method of cable insulation material of the present invention, first carries out surface modification to basalt fibre, improves the Black Warrior The load capacity of rock fiber and interface characteristics, then graphene will be loaded, effectively prevent interface corona and electric discharge phenomena;Finally by with Vinylsiloxane rubber it is compound, make it more preferable with the compatibility of polyethylene so that the insulating materials being prepared have it is more preferable Heat-resisting quantity and resistance to sparking, for cable, cable quality can be significantly improved, enable cable at higher temperature, high voltage environment Middle application;The preparation method is simple and reliable, is suitable for extensive, the industrialized production of cable insulation material.
Compared with prior art, beneficial effects of the present invention:
1st, the basalt fibre in cable insulation material of the present invention has rough surface, prevents breakdown channel along basalt fibre circle The fast-growth in face, improve the breakdown voltage of insulating materials.
2nd, the basalt fibre in cable insulation material of the present invention is loaded with graphene, can effectively prevent interface corona and put Electrical phenomena, reduces that material is breakdown and the possibility of electrical treeing.
3rd, the basalt fibre in cable insulation material of the present invention contains nano aluminium oxide and nano silicon, and its is electrical Can be more preferable.
4th, cable insulation material insulating properties, heat-resisting quantity and electric-breakdown resistance of the present invention are good, enable cable high-temperature, Long-term job applications in high voltage environment.
5th, preparation method of the present invention is simple, reliable, is adapted to extensive, the industrialized production of cable insulation material.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized The scope of invention.
Embodiment 1
(1)By 15 parts containing percetage by weight be 0.8% draw ratio be 2 ︰ 1, a diameter of 5nm alumina whisker and 1.6% grain Footpath is that the basalt fibre of 10nm nano silicons with 8 parts is that 3 ︰ 2 hydrogen peroxide and acetic acid are handled including mass ratio, Obtain treated basalt fiber;
(2)0.002 part of graphene uniform is supported on treated basalt fiber;
(3)15 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtain intermediate;
(4)Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder Go out, obtain cable insulation material.
Embodiment 2
(1)15 parts of parabasalt fibers are handled with 8 parts of the mass ratio that includes for 2 ︰ 1 hydrogen peroxide and formic acid, obtained Treated basalt fiber;
(2)0.002 part of graphene uniform is supported on treated basalt fiber;
(3)15 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtain intermediate;
(4)Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder Go out, obtain cable insulation material.
Embodiment 3
(1)Containing percetage by weight it is alumina whisker and 2.8% that 0.1% draw ratio is 1.5 ︰ 1, a diameter of 10nm by 10 parts Particle diameter is that the basalt fibre of 2nm nano silicons includes the hydrogen peroxide and ethanedioic acid, carry out that mass ratio is 4 ︰ 1 with 5 parts Processing, obtains treated basalt fiber;
(2)0.001 part of graphene uniform is supported on treated basalt fiber;
(3)20 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtain intermediate;
(4)Squeezed after intermediate is well mixed with 70 parts of polyethylene, 0.1 part of VTES with extruder Go out, obtain cable insulation material.
Embodiment 4
(1)By 20 parts containing percetage by weight be 1.5% draw ratio be 3 ︰ 1, a diameter of 2nm alumina whisker and 0.6% grain Footpath is that the basalt fibre of 20nm nano silicons with 12 parts is that 2 ︰ 3 hydrogen peroxide and butene dioic acid are carried out including mass ratio Processing, obtains treated basalt fiber;
(2)0.003 part of graphene uniform is supported on treated basalt fiber;
(3)20 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtain intermediate;
(4)Squeezed after intermediate is well mixed with 50 parts of polyethylene, 0.5 part of VTES with extruder Go out, obtain cable insulation material.
Comparative example 1
(1)It is that 0.8% draw ratio is 2 ︰ 1, a diameter of 5nm that 0.002 part of graphene uniform is supported on into 15 parts containing percetage by weight Alumina whisker and 1.6% particle diameter for 10nm nano silicons basalt fibre on;
(2)15 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the basalt fibre of graphene and obtain intermediate;
(3)Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder Go out, obtain cable insulation material.
Comparative example 2
(1)By 15 parts containing percetage by weight be 0.8% draw ratio be 2 ︰ 1, a diameter of 5nm alumina whisker and 1.6% grain Footpath is that the basalt fibre of 10nm nano silicons with 8 parts is that 3 ︰ 2 hydrogen peroxide and acetic acid are handled including mass ratio, Obtain treated basalt fiber;
(2)15 parts of vinylsiloxane rubbers are mixed into extrusion with treated basalt fiber and obtain intermediate;
(3)Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder Go out, obtain cable insulation material.
Comparative example 3
(1)By 15 parts containing percetage by weight be 0.8% draw ratio be 2 ︰ 1, a diameter of 5nm alumina whisker and 1.6% grain Footpath is that the basalt fibre of 10nm nano silicons with 8 parts is that 3 ︰ 2 hydrogen peroxide and acetic acid are handled including mass ratio, Obtain treated basalt fiber;
(2)0.005 part of graphene uniform is supported on treated basalt fiber;
(3)15 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtain intermediate;
(4)Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder Go out, obtain cable insulation material.
Comparative example 4
(1)0.002 part of graphene is mixed into extrusion with 15 parts of vinylsiloxane rubbers and obtains intermediate;
(2)Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder Go out, obtain cable insulation material.
By the cable insulation material in above-described embodiment 1-4 and comparative example 1-4, performance detection is carried out, record data is as follows:
Numbering Breakdown strength(KV/mm) Anti-flammability High temperature resistant(℃)
Embodiment 1 ≥50 ++++ ≤140
Embodiment 2 ≥45 ++++ ≤140
Embodiment 3 ≥50 ++++ ≤140
Embodiment 4 ≥50 ++++ ≤140
Comparative example 1 ≥40 ++++ ≤130
Comparative example 2 ≥35 ++++ ≤140
Comparative example 3 ≥10 ++++ ≤140
Comparative example 4 ≥20 + ≤110
Note:"+" is more, represents that performance is better.
Above-mentioned analysis of experimental data is understood, the cable insulation material of the present invention being prepared in embodiment 1-4, high temperature resistant Performance is good, good flame resistance, and breakdown voltage is high;And in comparative example 1-4, the cable insulation material that is not obtained using technical solution of the present invention Material performance significantly reduces.

Claims (10)

1. a kind of cable insulation material, it is characterised in that be prepared including following parts by weight raw material:The Black Warrior of 10-20 parts Rock fiber, the graphene of 0.001-0.003 parts, the vinylsiloxane rubber of 10-20 parts, the polyethylene of 50-70 parts, 5-12 parts change Property agent, the crosslinking agent of 0.1-0.5 parts;Described modifying agent includes the hydrogen peroxide and organic acid that mass ratio is 2-4 ︰ 1-3.
2. cable insulation material according to claim 1, it is characterised in that described organic acid is formic acid, acetic acid, second two One or more in acid, butene dioic acid, acrylic acid.
3. cable insulation material according to claim 2, it is characterised in that include weight in described basalt fibre Percentage is 0.1-1.5% nano aluminium oxide.
4. cable insulation material according to claim 2, it is characterised in that a diameter of 2- of described nano aluminium oxide 10nm。
5. cable insulation material according to claim 2, it is characterised in that described nano aluminium oxide is that draw ratio is 1.5-3 ︰ 1 alumina whisker.
6. cable insulation material according to claim 1, it is characterised in that also include 0.6- in described basalt fibre 2.8% nano silicon.
7. cable insulation material according to claim 6, it is characterised in that the weight percent of described nano silicon Than for 1.2-2.1%.
8. cable insulation material according to claim 6, it is characterised in that the particle diameter of described nano silicon is 5- 20nm。
9. cable insulation material according to claim 1, it is characterised in that described crosslinking agent is vinyl triethoxyl Silane.
10. the preparation method of any one of a kind of claim 1-9 cable insulation material, it is characterised in that including following step Suddenly:
(1)Basalt fibre is handled with modifying agent, obtains treated basalt fiber;
(2)By graphene-supported on treated basalt fiber;
(3)Vinylsiloxane rubber is mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtains intermediate;
(4)Extruded after intermediate is well mixed with polyethylene, crosslinking agent with extruder, obtain cable insulation material.
CN201710922667.0A 2017-09-30 2017-09-30 A kind of cable insulation material and preparation method thereof Withdrawn CN107652512A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710922667.0A CN107652512A (en) 2017-09-30 2017-09-30 A kind of cable insulation material and preparation method thereof

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Application Number Priority Date Filing Date Title
CN201710922667.0A CN107652512A (en) 2017-09-30 2017-09-30 A kind of cable insulation material and preparation method thereof

Publications (1)

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CN107652512A true CN107652512A (en) 2018-02-02

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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108530900A (en) * 2018-04-19 2018-09-14 俞小峰 A kind of preparation method of high temperature resistant type silastic material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108530900A (en) * 2018-04-19 2018-09-14 俞小峰 A kind of preparation method of high temperature resistant type silastic material

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