CN109206747A - A kind of high-voltage cable insulating material and preparation method thereof - Google Patents
A kind of high-voltage cable insulating material and preparation method thereof Download PDFInfo
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- CN109206747A CN109206747A CN201810980233.0A CN201810980233A CN109206747A CN 109206747 A CN109206747 A CN 109206747A CN 201810980233 A CN201810980233 A CN 201810980233A CN 109206747 A CN109206747 A CN 109206747A
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- insulating material
- voltage cable
- cable insulating
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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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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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
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The embodiment of the present application provides a kind of high-voltage cable insulating material and preparation method thereof, which includes the blend that each component of following parts by weight is prepared into: 90 parts of isotactic polypropylene, 10 parts of propylene-ethylene copolymers.High-voltage cable insulating material preparation method includes: to melt 2 minutes at 180 DEG C after mixing graininess isotactic polypropylene and propylene-ethylene copolymers according to the proportion of 9:1；Apply 1 ton of pressure to suppress 1 minute；Apply 5 tons of pressure at 180 DEG C to suppress 3 minutes, obtains initial film sample；The initial film sample is extracted.High-voltage cable insulating material provided by the embodiments of the present application can meet existing crosslinked polyethylene product, and improve the low tenacity and lower electric property of polypropylene material, in addition, finished product of the invention has recuperability, it is non-hazardous to environment.
Description
Technical field
This application involves composite cable field of material technology more particularly to a kind of high-voltage cable insulating material and its preparation sides
Method.
Background technique
The basic structure of power cable is made of core (conductor), insulating layer, shielded layer and four part of protective layer.Wherein,
Insulating layer is to guarantee that electrical energy transportation is indispensable for will be electrically isolated from each other between core and the earth and out of phase core
Few component part.Insulating layer is made of insulating material, and common insulating materials has oil-paper, plastics and rubber etc..
High-tension cable refers generally to the power cable of 110KV or more.At present in high-tension cable, widely used cable insulation
Material is XLPE (crosslinked polyethylene, Cross Linked Polyethylene).Crosslinked polyethylene has good dielectric properties
And mechanical performance, but the material and do not have recuperability.With the raising of environmental requirement, it is recyclable to develop novel green
The demand of type cable insulation material is gradually increased.
Polypropylene material is widely used base plastic, cheap, simple processing, but the toughness of polypropylene material
It is lower with respect to crosslinked polyethylene with electric property, limit its application in high-tension cable.
Summary of the invention
This application provides a kind of high-voltage cable insulating materials and preparation method thereof, to solve existing high-tension cable material not
The problem of environmental protection.
In a first aspect, this application provides a kind of high-voltage cable insulating material, which includes
The blend that each component of following parts by weight is prepared into: 90 parts of isotactic polypropylene, 10 parts of propylene-ethylene copolymers.
Preferably, the preparation process of the blend includes that each group of the parts by weight is suppressed using high-temperature press
Point.
Preferably, the isotactic polypropylene includes Isotactic polypropylene homopolymer.
Preferably, the propylene-ethylene copolymers include elastomeric propylene-ethylene polymer plastic.
Second aspect, present invention also provides a kind of high-voltage cable insulating material preparation method, the preparation method includes:
Melt 2 at 180 DEG C after graininess isotactic polypropylene and propylene-ethylene copolymers are mixed according to the proportion of 9:1
Minute；
Apply 1 ton of pressure to suppress 1 minute；
Apply 5 tons of pressure at 180 DEG C to suppress 3 minutes, obtains initial film sample；
The initial film sample is extracted.
Preferably, the thickness of the initial film sample includes 50 μm, 75 μm, 150 μm and 200 μm.
Preferably, the method also includes: be placed on iron plate and cooled down.
The beneficial effect of high-voltage cable insulating material provided by the present application and preparation method thereof includes:
High-voltage cable insulating material provided by the invention includes 90 parts of isotactic polypropylene, 10 parts of propylene-ethylene copolymers systems
It is standby at blend, the electric property of existing crosslinked polyethylene product can be met, there is recuperability, it is non-hazardous to environment；Phase
Compared with the high-voltage electricity polypropylene material of polypropylene material, toughness and electric property have a distinct increment.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow diagram of high-voltage cable insulating material preparation method provided by the embodiments of the present application.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, the common skill in this field
The application protection all should belong in art personnel every other embodiment obtained without making creative work
Range.
The embodiment of the present application provides a kind of high-voltage cable insulating material, suitable for making the insulating layer of high-tension cable.This
Apply for the high-voltage cable insulating material that embodiment provides, is prepared from the following ingredients in percentage by as preparing what raw material was prepared
Blend: the propylene-ethylene copolymers of the isotactic polypropylene of 90wt%, 10wt%.Blend refers to two or more molecule
The physical mixture of the different homopolymer of structure, copolymer or homopolymer and copolymer does not have between the macromolecular of general two component
There is the connection of covalent bond.
The isotactic polypropylene that the embodiment of the present application uses be Sigma-Aldrich (Sigma-Aldrich) company (Britain,
Dorset, the product of Nick Gillingham (Gillingham, Dorset, UK) production, propylene-ethylene copolymers are propylene-ethylene
Copolymer VERSIFYTM2200, be obtained from Tao Shi (Dow) chemical company (U.S., the state of Michigan, Midland (Midland,
Michigan,USA)。VERSIFYTMPlastic body and the unique molecular structure of elastomer is film, fiber and molded item provide
Excellent optics, sealing and thermal bonding energy, and elasticity, flexibility, flexibility and compatibility in the blend.The elasticity
Body has fabulous adhesive force to polyethylene and polypropylene, is suitable for and is used as sealant when polypropylene co-extrusion.
It is further to a kind of high-voltage cable insulating material work based on polypropylene blend provided by the embodiments of the present application
Illustrate, it is provided by the embodiments of the present application that present invention also provides a kind of high-voltage cable insulating material preparation methods referring to Fig. 1
A kind of flow diagram of high-voltage cable insulating material preparation method, as shown in Figure 1, high-tension cable provided by the embodiments of the present application
Insulating materials preparation method, specifically includes the following steps:
Step S110: 180 after graininess isotactic polypropylene and propylene-ethylene copolymers are mixed according to the proportion of 9:1
Melt 2 minutes at DEG C.
Specifically, isotactic polypropylene and propylene-ethylene copolymers that the embodiment of the present application uses are granular pattern raw material, it will
After the granular pattern raw material of isotactic polypropylene and propylene-ethylene copolymers is according to the proportion mixing of 9:1, it is placed on the pressing plate of press machine
On, it is melted in advance at a temperature of 180 DEG C 2 minutes, is conducive to the mixing of raw material.Press machine used in the embodiment of the present application is
Other press machines, such as Graseby Specac water-aspirator pressure machine also can be selected certainly in Micro-Mould press machine.
Step S120: apply 1 ton of pressure and suppress 1 minute.
Specifically, keeping 180 DEG C of temperature, apply 1 ton of pressure on the pressing plate of press machine, application time is 1 minute, is made
The blending sample of isotactic polypropylene and propylene-ethylene copolymers composition sufficiently melts and good mixing.
Step S130: apply 5 tons of pressure at 180 DEG C and suppress 3 minutes, obtain initial film sample.
Specifically, keeping 180 DEG C of temperature, continue to apply sample 5 tons of pressure, application time is 3 minutes, to generate
The initial film sample of about 150 μ m-thicks.According to the structure and test method of different test equipments, a variety of different-thickness can be prepared
Sample is in case test, such as surveyed with the film that Graseby Specac water-aspirator pressure mechanism makees about 50 μm of thickness for conductivity
The thickness thin film sample of examination, about 75 μm of production is drawn for electrical breakdown test and the sample of 200 μm or so of production for mechanical
Power test.
Step S140: the initial film sample is extracted.
Specifically, quickly removing sample carries out extracting operation, initial film sample is placed on iron plate and is cooled down, it can
It is cooled to room temperature sample in 30s, it is ensured that all initial film sample crystalline rates having the same obtain final film
Sample.
Further, electrical breakdown test is carried out to the final film sample of 75 μ m-thicks that above-mentioned preparation method is prepared,
The two-electrode system being mainly used under silicone oil impregnates is tested.It is put between two electrodes in test box immersed with silicone oil
Set the final film sample of 75 μ m-thicks.The voltage that rate is 100V/s is applied between electrode, until final film sample is hit
It wears.Usually with Weibull distribution (Weibull distribution) come the test result to breakdown strength carry out probability distribution can
It is analyzed by property, formula is as follows:
Wherein, F (E) is breakdown probability, and α is scale parameter (scale parameter), and β is form parameter (shape
parameter)。
Further, conductance test is carried out to the final film sample of 50 μ m-thicks to be surveyed using three-electrode method with DC conductivity
Test system tests the final film sample of 50 μ m-thicks.After conductance plots enter stable state, conductivity data is recorded.
Further, mechanical test is carried out to high-voltage cable insulating material provided by the embodiments of the present application.Mechanical test is logical
It is often used the sample that universal testing machine stretches rectangle or dumb-bell shape film with constant extension speed.In the embodiment of the present application
In, using Tinius Olsen H25KS tensile testing machine test with a thickness of 200 μm, length 5cm, the rectangle of width 1cm it is final
Film sample.Load-deformation curve, which is obtained, by Testing Software analyzes stretch test result.The tensile property of insulating materials
It can be indicated by Young's modulus (E):
Wherein, E is Young's modulus, and σ is tensile stress, and ε is elongation strain.
The result shows that high-voltage cable insulating material provided by the invention can meet simultaneously it is claimed below:
(1) higher dielectric properties, electrical breakdown strength can reach 283.20kV/mm, and conductivity test result is 4.35E-
18S/cm；
(2) Young's modulus of high tenacity, mechanical tensile strength can achieve 185.79Mpa.
By above embodiments as it can be seen that high-voltage cable insulating material provided by the embodiments of the present application includes 90 parts of isotactics poly- third
The blend that alkene, 10 parts of propylene-ethylene copolymers are prepared into can meet the electric property of existing crosslinked polyethylene product, have
Recuperability, it is non-hazardous to environment；The high-voltage electricity polypropylene material of polypropylene material is compared, toughness and electric property have larger mention
It rises.High-voltage cable insulating material preparation method provided by the embodiments of the present application, high-voltage cable insulating material obtained is by electrical
Breakdown strength test, conducting performance test and mechanical tenacity test achieve excellent effect.
Since embodiment of above is that reference combination is illustrated on other modes, have between different embodiments
There is identical part, identical, similar part may refer to each other between each embodiment in this specification.Herein no longer in detail
It illustrates.
It should be noted that in the present specification, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the article for including a series of elements not only includes those elements, but also including not bright
The other element really listed, or further include the element intrinsic for this article.In the absence of more restrictions, having
The element that sentence "including a ..." limits, it is not excluded that identical wanted in the article for including the element there is also other
Element.
Those skilled in the art will readily occur to its of the application after considering specification and practicing the disclosure invented here
His embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are wanted by right
The content asked is pointed out.
Above-described the application embodiment does not constitute the restriction to the application protection scope.
Claims (7)
1. a kind of high-voltage cable insulating material, which is characterized in that the high-voltage cable insulating material includes following parts by weight
The blend that each component is prepared into: 90 parts of isotactic polypropylene, 10 parts of propylene-ethylene copolymers.
2. high-voltage cable insulating material as described in claim 1, which is characterized in that the preparation process of the blend includes making
The each component of the parts by weight is suppressed with high-temperature press.
3. high-voltage cable insulating material as described in claim 1, which is characterized in that the isotactic polypropylene includes isotactic
Polypropylene homopolymer.
4. high-voltage cable insulating material as described in claim 1, which is characterized in that the propylene-ethylene copolymers include bullet
Property body propylene-ethylene polymer plastics.
5. a kind of high-voltage cable insulating material preparation method characterized by comprising
Melt 2 minutes at 180 DEG C after graininess isotactic polypropylene and propylene-ethylene copolymers are mixed according to the proportion of 9:1；
Apply 1 ton of pressure to suppress 1 minute；
Apply 5 tons of pressure at 180 DEG C to suppress 3 minutes, obtains initial film sample；
The initial film sample is extracted.
6. high-voltage cable insulating material preparation method as claimed in claim 5, which is characterized in that the initial film sample
Thickness includes 50 μm, 75 μm, 150 μm and 200 μm.
7. high-voltage cable insulating material preparation method as claimed in claim 5, which is characterized in that the method also includes: it puts
It sets and is cooled down on iron plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810980233.0A CN109206747B (en) | 2018-08-27 | 2018-08-27 | High-voltage cable insulating material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810980233.0A CN109206747B (en) | 2018-08-27 | 2018-08-27 | High-voltage cable insulating material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109206747A true CN109206747A (en) | 2019-01-15 |
| CN109206747B CN109206747B (en) | 2021-05-18 |
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| CN201810980233.0A Active CN109206747B (en) | 2018-08-27 | 2018-08-27 | High-voltage cable insulating material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330727A (en) * | 2019-07-29 | 2019-10-15 | 上海至正道化高分子材料股份有限公司 | A kind of mesohigh is with thermoplastic insulation material and preparation method thereof |
| CN114986771A (en) * | 2022-05-11 | 2022-09-02 | 西安交通大学 | Processing method for simultaneously improving elongation at break and dielectric strength of polypropylene cable material |
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| CN1046102A (en) * | 1989-03-20 | 1990-10-17 | 阿莫科公司 | Oriented porous films |
| CN101309953A (en) * | 2006-02-14 | 2008-11-19 | Sk能源株式会社 | Microporous polyolefin film with improved meltdown property and preparing method thereof |
| CN104583281A (en) * | 2012-03-29 | 2015-04-29 | 陶氏环球技术有限责任公司 | Process for producing polypropylene blends for thermoplastic insulation |
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| CN1046102A (en) * | 1989-03-20 | 1990-10-17 | 阿莫科公司 | Oriented porous films |
| CN101309953A (en) * | 2006-02-14 | 2008-11-19 | Sk能源株式会社 | Microporous polyolefin film with improved meltdown property and preparing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330727A (en) * | 2019-07-29 | 2019-10-15 | 上海至正道化高分子材料股份有限公司 | A kind of mesohigh is with thermoplastic insulation material and preparation method thereof |
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| CN114986771A (en) * | 2022-05-11 | 2022-09-02 | 西安交通大学 | Processing method for simultaneously improving elongation at break and dielectric strength of polypropylene cable material |
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| CN109206747B (en) | 2021-05-18 |
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