CN104927175B - Suppress Cross-linked Polyethylene Composites of internal space-charge and its preparation method and application - Google Patents
Suppress Cross-linked Polyethylene Composites of internal space-charge and its preparation method and application Download PDFInfo
- Publication number
- CN104927175B CN104927175B CN201510434288.8A CN201510434288A CN104927175B CN 104927175 B CN104927175 B CN 104927175B CN 201510434288 A CN201510434288 A CN 201510434288A CN 104927175 B CN104927175 B CN 104927175B
- Authority
- CN
- China
- Prior art keywords
- cross
- sic
- charge
- internal space
- linked polyethylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C08K3/34—Silicon-containing compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/242—Applying crosslinking or accelerating agent onto compounding ingredients such as fillers, reinforcements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- C08K5/14—Peroxides
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- 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
- C08K2201/011—Nanostructured 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a kind of Cross-linked Polyethylene Composites for suppressing internal space-charge and its preparation method and application, the composite is composited under the auxiliary of cross-linking agent by Low Density Polyethylene and SiC nanoparticles；The SiC nanoparticle contents are 1～5wt%；The polymeric matrix is Low Density Polyethylene, and Density Distribution is 0.910～0.925mg/cm3, thawing index is 2.1～2.2g/10min, and fusing point is 105 DEG C～112 DEG C.XLPE/SiC complex medias prepared by the present invention, internal space charge density illustrate that SiC nanoparticles can effectively improve the distribution of space charge inside crosslinked polyethylene, weaken the distortion of electric field less than the crosslinked polyethylene for being not added with nanoparticle.
Description
Technical field
The invention belongs to technical field of composite materials, and in particular to a kind of crosslinked polyethylene of suppression internal space-charge is multiple
Condensation material and its preparation method and application.
Background technology
HVDC Transmission Technology becomes current electrical engineering field and grinds as which is in the advantage of the aspect such as stability and economy
The focus studied carefully.Cable polyethylene due to becoming the primary insulation material of direct current transportation with high dielectric strength and low-dielectric loss
Material, but low conductivity characteristic causes the space charge of its accumulated inside to be difficult to spread, and causes the insulation such as shelf depreciation, poplar bundles
Catabiosis, substantially reduce the service life of cable.For ac cable, the development of high direct voltage electric power cable is relative
Delayed, its main difficulty developed is the space charge for eliminating or suppressing in polyethylene.
Since the dielectric concept of nanometer is proposed from T.J.Lewis in 1994, nanometer electrolyte causes scholars'
Extensive concern, polyethylene complex media develop into XLPE complex medias now from initial LDPE complex medias.It is existing
Research it is believed that there is a kind of interface of uniqueness between nanoparticle and polymer matrix inside nano-filled composite,
Due to the presence at the interface, make nano-filled composite that there is preferably electrically and mechanically performance.
The content of the invention
In view of this, it is an object of the invention to provide a kind of crosslinked polyethylene composite wood for suppressing internal space-charge
Material, the Cross-linked Polyethylene Composites can suppress material internal space charge, weaken electric field distortion；Present invention also offers
The preparation method and application of above-mentioned composite polyethylene material.
The technical scheme that the present invention takes is as follows：
1st, suppress the Cross-linked Polyethylene Composites of internal space-charge, existed by Low Density Polyethylene and SiC nanoparticles
It is composited under the auxiliary of cross-linking agent；The SiC nanoparticle contents are 1～5wt%；The polymeric matrix is poly- for low-density
Ethylene, Density Distribution are 0.910～0.925mg/cm3, thawing index is 2.1～2.2g/10min, and fusing point is 105 DEG C～112
℃。
Preferably, the SiC nano particle diameters are 30nm～40nm.
Preferably, SiC nanoparticle contents scope 3wt%.
Preferably, the cross-linking agent is cumyl peroxide.
Preferably, the content of crosslinking agent is 2wt%.
The SiC nanoparticles of proportional quantity are dried by the 2nd, preparation method of above-mentioned Cross-linked Polyethylene Composites first,
Then dried SiC nanoparticles are mixed homogeneously with low-density polyethylene material and machinery carried out under the conditions of 116 DEG C be total to
It is mixed, cross-linking agent is added, graininess is cut into after blending, and granular material is pressed into into thin film, taken off under the conditions of vacuum drying
Gas disposal 1h.
Preferably, when granular material being pressed into thin film, vulcanizing press temperature is 180 DEG C, and pressure is 10MPa, compacting
Time is 15min, about 190 μm of film thickness.
Preferably, during degassing process, vacuum drying temperature is 80 DEG C.
3rd, application of the above-mentioned Cross-linked Polyethylene Composites in insulant is prepared.
The beneficial effects of the present invention is：XLPE/SiC complex medias prepared by the present invention, its internal space charge are close
Less than the crosslinked polyethylene for being not added with nanoparticle, degree illustrates that SiC nanoparticles effectively can improve inside crosslinked polyethylene
Distribution of space charge, weaken electric field distortion.
Description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below：
Fig. 1 Cross-linked Polyethylene Composites internal space-charge scattergrams；
XLPE/SiC complex media internal space-charge scattergram of Fig. 2 nanoparticle concentrations for 1wt%；
XLPE/SiC complex media internal space-charge scattergram of Fig. 3 nanoparticle concentrations for 3wt%；
XLPE/SiC complex media internal space-charge scattergram of Fig. 4 nanoparticle concentrations for 5wt%.
Specific embodiment
Below the preferred embodiments of the present invention are described in detail.The experiment side of unreceipted actual conditions in embodiment
Method, generally according to normal condition or according to the condition proposed by manufacturer.
1 nanoparticle content of embodiment is prepared for the XLPE/SiC complex medias of 1wt%
The nanometer particle size for weighing proportional quantity is placed in 190 DEG C of vacuum drying oven dry 24 for the SiC nanoparticles of 40nm
Hour, pouring in double screw extruder after dried SiC nanoparticles are mixed homogeneously with low-density polyethylene material is carried out
Mechanical blending, is sufficiently mixed 20min under circulation pattern, and the cross-linking agent of 2wt% is added LDPE/SiC complex medias, control temperature
Spend for 116 DEG C, subsequently the material of gained after blending is placed on vulcanizing press and is pressed into film like, vulcanizing press temperature is
180 DEG C, the time is 15min, and pressure is 10MPa, about 0.19 μm of the film thickness being pressed into.Obtained sample is put into into 80
The degassing process of 1h is carried out in DEG C vacuum drying oven.
Obtained complex media internal space-charge scattergram is shown in Fig. 2, it can be seen that have at material anelectrode compared with
Few like charges accumulation, almost no charge accumulation near negative electrode, material internal space-charge accumulation amount are few, show
The nano SiC of 1wt% concentration has stronger inhibitory action to material internal space-charge accumulation.
2 nanoparticle content of embodiment is prepared for the XLPE/SiC complex medias of 3wt%
The nanometer particle size for weighing proportional quantity is placed in 190 DEG C of vacuum drying oven dry 24 for the SiC nanoparticles of 40nm
Hour, pouring in double screw extruder after dried SiC nanoparticles are mixed homogeneously with low-density polyethylene material is carried out
Mechanical blending, is sufficiently mixed 20min under circulation pattern, and the cross-linking agent of 2wt% is added LDPE/SiC complex medias, control temperature
Spend for 116 DEG C, subsequently the material of gained after blending is placed on vulcanizing press and is pressed into film like, vulcanizing press temperature is
180 DEG C, the time is 15min, and pressure is 10MPa, about 0.19 μm of the film thickness being pressed into.Obtained sample is put into into 80
The degassing process of 1h is carried out in DEG C vacuum drying oven.
Obtained complex media internal space-charge scattergram is shown in Fig. 3, it can be seen that at the positive and negative electrode of material
The phenomenon of like charges accumulation is occurred in that, and the like charges cumulant at anelectrode is more, compared with 1wt% concentration
There are more space-charge accumulation amounts in material.
3 nanoparticle content of embodiment is prepared for the XLPE/SiC complex medias of 5wt%
The nanometer particle size for weighing proportional quantity is placed in 190 DEG C of vacuum drying oven dry 24 for the SiC nanoparticles of 40nm
Hour, pouring in double screw extruder after dried SiC nanoparticles are mixed homogeneously with low-density polyethylene material is carried out
Mechanical blending, is sufficiently mixed 20min under circulation pattern, and the cross-linking agent of 2wt% is added LDPE/SiC complex medias, control temperature
Spend for 116 DEG C, subsequently the material of gained after blending is placed on vulcanizing press and is pressed into film like, vulcanizing press temperature is
180 DEG C, the time is 15min, and pressure is 10MPa, about 0.19 μm of the film thickness being pressed into.Obtained sample is put into into 80
The degassing process of 1h is carried out in DEG C vacuum drying oven.
Obtained complex media internal space-charge scattergram is shown in Fig. 4, it can be seen that equal at material positive and negative electrode
The accumulation of heterocharge is occurred in that, and with the increase of polarization time, space-charge accumulation amount first increases and then decreases, negative electricity
Heterocharge at pole is finally changed into like charges accumulation, and the material of the concentration has more compared with the material of 1wt% concentration
Many space-charge accumulations.
By Fig. 2-4 is compared with Fig. 1, nanometer LDPE/SiC of 1wt%, 3wt% and 5wt% concentration is combined
Material shows the inhibitory action to space charge, concentration for 1wt% composite to the inhibitory action of space charge most
Good, with the increase of concentration, nano SiC is gradually lowered to the inhibitory action of space-charge accumulation in material.3wt% concentration is answered
The phenomenon of like charges accumulation is occurred in that at condensation material anelectrode, but when nanometer concentration increases to 5wt%, composite
But the accumulation of heterocharge is occurred in that at positive and negative electrode.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate technical scheme, although logical
Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be
Various changes are made to which in form and in details, without departing from claims of the present invention limited range.
Claims (5)
1. the Cross-linked Polyethylene Composites of internal space-charge are suppressed, it is characterised in that：By Low Density Polyethylene and SiC nanometers
Particle is composited under the auxiliary of cross-linking agent；The SiC nanoparticle contents are 1 ~ 5wt%, and particle diameter is 30nm ~ 40nm；It is described
Cross-linking agent is cumyl peroxide；Polymeric matrix is Low Density Polyethylene, and Density Distribution is 0.910 ~ 0.925mg/cm3,
Thawing index is 2.1 ~ 2.2g/10min, and fusing point is 105 DEG C ~ 112 DEG C；The crosslinked polyethylene for suppressing internal space-charge is multiple
The method of condensation material is to be dried the SiC nanoparticles of proportional quantity first, then by dried SiC nanoparticles with
Low-density polyethylene material mix homogeneously simultaneously carries out mechanical blending under the conditions of 116 DEG C, adds cross-linking agent, cuts into after blending
Graininess, and granular material is pressed into into thin film, when granular material is pressed into thin film, vulcanizing press temperature is 180
DEG C, pressure is 10MPa, and the press time is 15min, about 190 μm of film thickness, degassing process 1h under the conditions of vacuum drying.
2. Cross-linked Polyethylene Composites as claimed in claim 1, it is characterised in that：The SiC nanoparticle contents scope
3wt%。
3. Cross-linked Polyethylene Composites as described in any one of claim 1 ~ 2, it is characterised in that：The content of crosslinking agent is
2wt%。
4. Cross-linked Polyethylene Composites as claimed in claim 1, it is characterised in that：During degassing process, vacuum drying temperature is
80℃。
5. application of the Cross-linked Polyethylene Composites described in any one of claim 1 ~ 4 in insulant is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510434288.8A CN104927175B (en) | 2015-07-22 | 2015-07-22 | Suppress Cross-linked Polyethylene Composites of internal space-charge and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510434288.8A CN104927175B (en) | 2015-07-22 | 2015-07-22 | Suppress Cross-linked Polyethylene Composites of internal space-charge and its preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104927175A CN104927175A (en) | 2015-09-23 |
| CN104927175B true CN104927175B (en) | 2017-04-05 |
Family
ID=54114614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510434288.8A Active CN104927175B (en) | 2015-07-22 | 2015-07-22 | Suppress Cross-linked Polyethylene Composites of internal space-charge and its preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104927175B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727948B (en) * | 2017-09-11 | 2020-06-19 | 南方电网科学研究院有限责任公司 | Method and device for calculating spherical charge distribution of nanoparticles |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440180B (en) * | 2008-12-26 | 2011-04-20 | 哈尔滨理工大学 | Polyolefin based non-linear dielectric material with non-linear dielectric constant and non-linear conductivity |
| CN104448493B (en) * | 2014-12-12 | 2018-03-30 | 中国电力科学研究院 | A kind of direct current cables insulating materials |
-
2015
- 2015-07-22 CN CN201510434288.8A patent/CN104927175B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104927175A (en) | 2015-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Du et al. | Temperature-dependent DC conductivity and space charge distribution of XLPE/GO nanocomposites for HVDC cable insulation | |
| Yu et al. | Improving the dielectric properties of poly (vinylidene fluoride) composites by using poly (vinyl pyrrolidone)-encapsulated polyaniline nanorods | |
| Dang et al. | Suppression of elevated temperature space charge accumulation in polypropylene/elastomer blends by deep traps induced by surface-modified ZnO nanoparticles | |
| CN101585943A (en) | Cable semi-conductive shielding material and preparation method thereof | |
| US20130062571A1 (en) | Method for preparing electrode active material slurry and electrochemical capacitor comprising electrode using electrode active material slurry prepared by the method | |
| CN107418146B (en) | Insulator material, insulator and preparation method | |
| Zhao et al. | Synergistic effect of ZnO microspherical varistors and carbon fibers on nonlinear conductivity and mechanical properties of the silicone rubber-based material | |
| CN106633303B (en) | The nano combined crosslinked polyethylene insulation material and preparation method thereof of high dc breakdown field strength | |
| CN105602066A (en) | Polyethylene/nylon composite material and preparation method thereof | |
| WO2022242026A1 (en) | Cross-linked polyethylene composite material, and preparation method therefor and application thereof | |
| Song et al. | Elevated conductivity and electromagnetic interference shielding effectiveness of PVDF/PETG/carbon fiber composites through incorporating carbon black | |
| Panwar et al. | Dielectric analysis of high‐density polyethylene‐graphite composites for capacitor and EMI shielding application | |
| CN107573598A (en) | High-voltage direct-current cable accessory insulation matching method for improving based on mixed nanometer | |
| Liao et al. | Effects of aluminum nitride nanoparticles on the space charge behavior of cellulose paper | |
| CN104927175B (en) | Suppress Cross-linked Polyethylene Composites of internal space-charge and its preparation method and application | |
| CN104292638B (en) | A kind of preparation method of callable cable insulation material | |
| CN106279929B (en) | A kind of cable semi-conductive shielding material and preparation method | |
| KR101870265B1 (en) | Fabricating method for graphene composites including post-treatment of sonification, fabricating method for active material and supercapacitor by the same | |
| Wang et al. | Dielectric film with high energy density based on polypropylene/maleic anhydride-grafted polypropylene/boron nitride nanosheet ternary system | |
| Murata et al. | Investigation of space charge distribution and volume resistivity of XLPE/MgO nanocomposite material under DC voltage application | |
| CN106893186A (en) | High dielectric property N ethyl carbazoles/composite polyethylene material and preparation method thereof | |
| CN109206748B (en) | Polypropylene-based composite insulating material and preparation method thereof | |
| CN108484975A (en) | The method that benzophenone derivates inhibit high voltage direct current cable space charge | |
| Li et al. | Evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications | |
| CN104530521B (en) | A kind of method preparing the conductive polymer composite with isolation structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |