CN108276639A - A kind of high voltage direct current cable inhibition charge crosslinked insulating material and preparation method - Google Patents
A kind of high voltage direct current cable inhibition charge crosslinked insulating material and preparation method Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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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
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- 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
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- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
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- C08K3/00—Use of inorganic substances as compounding ingredients
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- C08K3/26—Carbonates; Bicarbonates
- C08K2003/262—Alkali metal carbonates
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Abstract
The invention belongs to modified cable material field, a kind of high voltage direct current cable inhibition charge crosslinked insulating material and preparation method are provided.This method mixes hydrous tin chloride with lithium carbonate, ammonium hydroxide is added to be reacted, then it is filtered by vacuum, washs, high-temperature process after drying, obtain conductive nano ceramic powders, it is then dispersed in the premix of low density polyethylene (LDPE), antioxidant and filler, electron beam irradiation is carried out after melting extrusion sizing, you can obtains modified crosslinking ethylene CABLE MATERIALS.Compared with conventional method; cable material prepared by the present invention has excellent conductance property and inhibits space charge ability; the compatibility of conductive powder and resin is good; it is mechanical property and the splendid high voltage direct current cable material of electric property, while is lost that low, current-carrying capacity is big, light weight, installation is easy and good environmental adaptability in use, has a extensive future; and whole preparation process is simple; low energy consumption, and cost is relatively low, can large-scale promotion production.
Description
Technical field
The invention belongs to modified cable material fields, provide a kind of high voltage direct current cable inhibition charge cross linked insulation material
Material and preparation method.
Background technology
Electrical insulating material is to manufacture electrical and electronic equipment key foundation material, to electrical and electronic equipment use
Service life and operational reliability have conclusive effect.It is increasingly in short supply with electric power resource, traditional ac transmission mode by
Have the tendency that the plastic high voltage direct current transportation mode by low-loss, low cost replaces in high loss, the high cost the shortcomings of, it is right
The requirement of insulating materials is also higher and higher.
At this stage, D.C. high voltage transmission mainly uses paper oil insulation high voltage DC power cable and direct current plastic cable, but
It is that the manufacturing process of paper oil insulation cable is complicated, and operation expense is high, it is higher in cable temperature liter, due to oil
Viscosity reduction can be migrated to low gesture position, and the pressure of the dielectric strength reduction and heavy wool position that lead to few oily part increases, so that
Cable local compression dilatancy is even damaged.Extrusion pressing type polymer direct current cables, also referred to as direct current plastic cable, it is internal exhausted
Edge medium is mainly polyethylene, simple in structure and firm, is suitble to large-scale application in seabed or land direct current transportation cable
Road.Relative to paper oil insulation direct current cables, crosslinked polyethylene direct current cables flexibility is good, and manufacture installation is easy；Dielectric loss and
Conductor losses is low, and current-carrying capacity is big；Cable can be made to be run under higher electric field, insulation thickness is thinned, the outside diameter of cable reduces, matter
Amount mitigates；Advantage again with environmental protection aspect simultaneously, has broader practice scene.Therefore, plastic insulation is researched and developed
Direct current cables is most important to direct current transportation.
However, there are space charge in high voltage direct current cable, space charge can lead to part electricity in PE cable insulation
Field distortion and electric property decline, and especially in actual operation, temperature gradient effect can aggravate cable outer insulation electric field
Distortion, reduces the service life of cable.For this purpose, how research inhibits the generation of polyethylene insulation Space-charge for direct current
The development tool of cable has significant practical applications.With the development of insulating materials and nanotechnology, pass through specific work in dielectric
Skill adds function nano material, can inhibit the space charge in high voltage direct current cable to a certain extent.Wherein, how to control
Spatial distribution of the nano-particle in polyethylene becomes key.When in polymer material add nano-particle after, nano-particle with
Interfacial effect can be formed between polymer, nano-particle, these interfaces can influence the migration of carrier indirectly and compound electric is situated between
The concentration of carrier inside matter.Studies have shown that the introducing of nano-particle can make DC electric field and temperature gradient polyethylene off field
Space charge accumulation and local electric field distortion in nanocomposite are weakened, and dc breakdown field strength improves, while making to gather
The trend fallen after rising is presented with the raising of temperature in the volume resistivity of ethylene nanocomposite.
At present one has been achieved in terms of the insulating materials of high voltage direct current cable, especially polyethylene insulation material both at home and abroad
Determine effect.Wherein Wang Shi boats et al. invented a kind of high dc breakdown field strength nano combined crosslinked polyethylene insulation material and its
Preparation method（Chinese invention patent application number 201611193787.3）, ingredient includes：Low density polyethylene (LDPE), nm-class boron nitride grain
Son, crosslinking agent and antioxidant, insulating materials made from the invention can be used in the insulating materials of direct current cables, compared to being not added with
Its dc breakdown field strength of the crosslinked polyethylene of nano silicon nitride boron particles has apparent increase.In addition, Chong et al. has invented one kind
High voltage direct current cable material and preparation method thereof（Chinese invention patent application number 201510347222.5）, including following component：
Low density polyethylene (LDPE), modified Nano magnesia, atoleine, antioxidant 300 and benzil class compound, the side that the invention provides
Method prepares modified Nano magnesia using roller ball mill method, then by raw material premix, is finally granulated and high voltage direct current cable material is made, tool
There are excellent inhibition space charge accumulation characteristic, high breakdown field strength that can meet the transmission of electricity of 100kV high voltage direct current cables and require.
As it can be seen that damaged in the prior art for the easy local compression expansion of the paper oil insulation cable of high voltage direct current cable, and
Electricity tree easily occurs for general plastic insulated cable, especially polyethylene insulated cable application Space-charge effect especially severe
Branch development and aging, and traditional addition nano-particle is modified the technical method of processing, because of nano-particle and plastic compatible
Poor, the bad dispersibility in preparation of property, causes insulation performance bad and mechanical property, electric property cannot be satisfied requirement, together
When preparation process it is complicated and cost is higher.For such case, it is proposed that a kind of cross-linking insulation material of high voltage direct current cable
Material and preparation method, can be uniformly dispersed in by conductivity ceramics powder in matrix, and effectively adsorb carrier, and space is reduced
Charge accumulated has excellent conductance property and inhibits space charge ability, can be used as the insulating materials of high voltage direct current cable；
It is further good with resin compatible, the mechanical property and electric property of material can be effectively improved.
Invention content
The object of the present invention is to provide a kind of high voltage direct current cables with charge crosslinked insulating material and preparation method is inhibited, can
To solve, poor for the polyethylene insulated cable space charge rejection ability of D.C. high voltage transmission, electric property is poor and easy to aging
Problem, while nano-particle bad dispersibility when avoiding Conventional nano particle modified polyethylene insulated cable, lead to insulating materials
Insulation performance is poor, mechanical property and electric property is bad and preparation process is complicated defect.
Specific technical solution of the present invention is as follows：
A kind of high voltage direct current cable preparation method for inhibiting charge crosslinked insulating material, hydrous tin chloride and lithium carbonate are mixed
It closes, ammonium hydroxide is added and is reacted, be then filtered by vacuum, wash, high-temperature process after drying, obtaining conductive nano ceramic powders, so
It is scattered in afterwards in the premix of low density polyethylene (LDPE), antioxidant and filler, electron beam irradiation is carried out after melting extrusion sizing, you can
It must be modified cross-linkable polyethylene insulation material, preparation is as follows：
（1）Hydrous tin chloride is added to the water with lithium carbonate with certain parts by weight, is uniformly mixed, is then heavy with ammonium hydroxide
Shallow lake agent, is slowly added in mixed liquor, and hydrous tin chloride is made to be reacted under pH value 7.5~9 with ammonium hydroxide, generates receiving for carbonic acid lithium doping
Rice tin oxide, is then filtered by vacuum, is washed, oven drying, then carrying out high-temperature process, and conductive nano ceramic powders are made；
Wherein, 20~40 parts by weight of hydrous tin chloride, 4~12 parts by weight of lithium carbonate, 48~76 parts by weight of water；
（2）Low density polyethylene (LDPE), antioxidant and filler are pressed into certain parts by weight weighing, are added in high-speed mixer, certain
Temperature and rotating speed under be blended, be made premix；Wherein, 88~94 parts by weight of low density polyethylene (LDPE), 1~2 weight of antioxidant
Measure part, 5~10 parts by weight of filler；
（3）Under the peptizaiton of sodium carboxymethylcellulose, make step（1）The conductive nano ceramic powders of gained are scattered in step
（2）In the premix of gained, melting extrusion molding, and cooling and shaping are then carried out by cable extruding machine, then pass through electronics
Beam irradiation makes low density polyethylene (LDPE) crosslink, you can is made and inhibits charge crosslinked polyethylene insulation material；Wherein, conductive nano
12~18 parts by weight of ceramic powders, 78~86 parts by weight of premix, 2~4 parts by weight of sodium carboxymethylcellulose.
Preferably, it is characterised in that：Step（1）The washing times are 3~5 times, and drying temperature is 70~90 DEG C, dry
Time is 8~12h.
Preferably, it is characterised in that：Step（1）The temperature of the high-temperature process is 600~700 DEG C, and the time is 3~4h.
Preferably, it is characterised in that：Step（2）The antioxidant be antioxidant 1010, antioxidant 164, antioxidant 264,
At least one of antioxidant 1076 or irgasfos 168.
Preferably, it is characterised in that：Step（2）The filler is magnesia, silica, aluminium oxide, zinc oxide or titanium
One or more of sour barium.
Preferably, step（2）The mixing temperature of the high-speed mixer is 80~120 DEG C, and rotating speed is 120~150r/
Min, incorporation time are 25~40min.
Preferably, it is characterised in that：Step（3）The unit component of the cable extruding machine includes pay off rack, leading-in bracket, master
Machine, bosh, drying, inker, crawling traction, drawing and rolling machine and temperature controlled electrical operation cabinet, cable squeeze out a diameter of 8
~12mm, it is 30~40m/min to go out linear velocity.
Preferably, it is characterised in that：Step（3）In the electron beam irradiation, beam energy is 5~8MeV, pulse frequency
Rate is that 20~50H exists, and irradiation time is 5~10min.
The present invention also provides a kind of a kind of high voltage direct current cables that above-mentioned preparation method is prepared to inhibit charge crosslinking
Insulating materials.
Inhibition charge crosslinked polyethylene insulation material prepared by the present invention and silane cross-linking method and peroxide crosslinking method
Dispersibility, space charge rejection ability, insulation resistance and the tensile strength of the modification cross-linkable polyethylene insulation material of preparation into
Row comparison, the results are shown in Table 1, it is seen then that method of the invention can effectively improve the dispersibility of conductive powder, and then promote material
To the rejection ability and insulation performance of space charge, while improving the mechanical property and electric property of insulating materials.
Table 1：
| Performance indicator | Dispersibility | Space charge rejection ability | Insulation resistance（MΩ） | Tensile strength（MPa） |
| Silane cross-linking method | Preferably | Generally | 400~600 | 30~42 |
| Peroxide crosslinking method | Generally | Generally | 400~600 | 35~45 |
| The method of the present invention | It is good | It is very strong | 500~700 | 45~58 |
The present invention provides a kind of high voltage direct current cables with charge crosslinked insulating material and preparation method is inhibited, with prior art phase
Than the feature and excellent effect protruded is：
1. it is evenly dispersed in the base by conductivity ceramics powder in preparation process of the present invention, carrier can be effectively adsorbed, is dropped
Low spatial charge accumulated has excellent conductance property and inhibits space charge ability, is the exhausted of fabulous high voltage direct current cable
Edge material.
2. the preparation method of the present invention, promotes the compatibility of conductive powder and resin, effectively increases insulating materials
Mechanical property and electric property.
3. the insulating materials of the preparation of the present invention, it is lost when use that low, current-carrying capacity is big, light weight, installation is easy and environment
Adaptability is good, while having environment-friendly advantage, has a extensive future.
4. the preparation process of the present invention is simple, low energy consumption, and cost is relatively low, can large-scale promotion production.
Specific implementation mode
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
The lithium carbonate of the hydrous tin chloride of 30kg and 8kg are added in the water of 62kg, are uniformly mixed, are then heavy with ammonium hydroxide
Shallow lake agent, is slowly added in mixed liquor, so that hydrous tin chloride is reacted under conditions of pH value is 8 with ammonium hydroxide, generates carbonic acid lithium doping
Nano tin dioxide, be then filtered by vacuum, washed 4 times, baking oven dry 10h at 80 DEG C handles 3.5h at 650 DEG C,
Conductive nano ceramic powders are made；Then by the low density polyethylene (LDPE) of 93kg, the antioxidant 1010 of 1kg, 3kg magnesia and
The silica of 3kg is added in high-speed mixer, at 100 DEG C, 30min is blended with the rotating speed of 130r/min, premix is made；
Then the conductive nano ceramic powders of the sodium carboxymethylcellulose, 15kg that take 3kg are scattered in the premix of 82kg, are then passed through
It is molded with the speed melting extrusion of 35m/min in cable extruding machine, and cooling and shaping, is then the electron beam of 6MeV by energy
Irradiation 8min makes low density polyethylene (LDPE) crosslink, you can is made and inhibits charge cross-linked ethylene CABLE MATERIALS；
Modification cross-linkable polyethylene insulation material prepared by embodiment 1, test dispersibility, space charge rejection ability, insulated electro
Resistance and tensile strength, obtain that the results are shown in Table 2.
Embodiment 2
The lithium carbonate of the hydrous tin chloride of 20kg and 5kg are added in the water of 75kg, are uniformly mixed, are then heavy with ammonium hydroxide
Shallow lake agent, is slowly added in mixed liquor, and hydrous tin chloride is made to be reacted under conditions of pH value is 7.5 with ammonium hydroxide, generates lithium carbonate and mixes
Miscellaneous nano tin dioxide, is then filtered by vacuum, and is washed 3 times, and baking oven dry 12h at 70 DEG C handles 4h at 600 DEG C,
Conductive nano ceramic powders are made；Then the aluminium oxide of the low density polyethylene (LDPE) of 93kg, the antioxidant 164 of 1kg and 6kg is added
In high-speed mixer, at 80 DEG C, 25min is blended with the rotating speed of 150r/min, premix is made；Then the carboxymethyl of 2kg is taken
Sodium cellulosate, 13kg conductive nano ceramic powders be scattered in the premix of 85kg, then by cable extruding machine with
The speed melting extrusion of 30m/min is molded, and cooling and shaping, is then made by the electron beam irradiation 10min that energy is 5MeV low
Density polyethylene crosslinks, you can is made and inhibits charge cross-linked ethylene CABLE MATERIALS；
Modification cross-linkable polyethylene insulation material prepared by embodiment 2, test dispersibility, space charge rejection ability, insulated electro
Resistance and tensile strength, obtain that the results are shown in Table 2.
Embodiment 3
The lithium carbonate of the hydrous tin chloride of 40kg and 10kg are added in the water of 50kg, are uniformly mixed, are then with ammonium hydroxide
Precipitating reagent is slowly added in mixed liquor, and hydrous tin chloride is made to be reacted under conditions of pH value is 9 with ammonium hydroxide, is generated lithium carbonate and is mixed
Miscellaneous nano tin dioxide, is then filtered by vacuum, and is washed 5 times, and baking oven dry 8h at 90 DEG C handles 3h at 700 DEG C, makes
Obtain conductive nano ceramic powders；Then the zinc oxide of the low density polyethylene (LDPE) of 88kg, the antioxidant 264 of 2kg and 10kg is added
In high-speed mixer, at 120 DEG C, 40min is blended with the rotating speed of 120r/min, premix is made；Then the carboxymethyl of 4kg is taken
Sodium cellulosate, 18kg conductive nano ceramic powders be scattered in the premix of 78kg, then by cable extruding machine with
The speed melting extrusion of 40m/min is molded, and cooling and shaping, is then made by the electron beam irradiation 5min that energy is 8MeV low close
Degree polyethylene crosslinks, you can is made and inhibits charge cross-linked ethylene CABLE MATERIALS；
Modification cross-linkable polyethylene insulation material prepared by embodiment 3, test dispersibility, space charge rejection ability, insulated electro
Resistance and tensile strength, obtain that the results are shown in Table 2.
Embodiment 4
The lithium carbonate of the hydrous tin chloride of 25kg and 10kg are added in the water of 65kg, are uniformly mixed, are then with ammonium hydroxide
Precipitating reagent is slowly added in mixed liquor, and hydrous tin chloride is made to be reacted under conditions of pH value is 8 with ammonium hydroxide, is generated lithium carbonate and is mixed
Miscellaneous nano tin dioxide, is then filtered by vacuum, and is washed 4 times, and baking oven dry 89h at 75 DEG C is handled at 680 DEG C
Conductive nano ceramic powders are made in 3.5h；Then by the oxidation of the low density polyethylene (LDPE) of 92kg, the antioxidant 1076 of 1kg and 7kg
Zinc is added in high-speed mixer, at 90 DEG C, 30min is blended with the rotating speed of 130r/min, premix is made；Then take 3kg's
Sodium carboxymethylcellulose, 14kg conductive nano ceramic powders be scattered in the premix of 83kg, then pass through cable extruding machine
In be molded with the speed melting extrusion of 32m/min, then and cooling and shaping is made by the electron beam irradiation 9min that energy is 6MeV
Low density polyethylene (LDPE) crosslinks, you can is made and inhibits charge cross-linked ethylene CABLE MATERIALS；
Modification cross-linkable polyethylene insulation material prepared by embodiment 4, test dispersibility, space charge rejection ability, insulated electro
Resistance and tensile strength, obtain that the results are shown in Table 2.
Embodiment 5
The lithium carbonate of the hydrous tin chloride of 35kg and 9kg are added in the water of 56kg, are uniformly mixed, are then heavy with ammonium hydroxide
Shallow lake agent, is slowly added in mixed liquor, and hydrous tin chloride is made to be reacted under conditions of pH value is 8.5 with ammonium hydroxide, generates lithium carbonate and mixes
Miscellaneous nano tin dioxide, is then filtered by vacuum, and is washed 5 times, and baking oven dry 11h at 85 DEG C handles 4h at 680 DEG C,
Conductive nano ceramic powders are made；Then the barium titanate of the low density polyethylene (LDPE) of 90kg, the irgasfos 168 of 1kg and 9kg is added
In high-speed mixer, at 110 DEG C, 40min is blended with the rotating speed of 140r/min, premix is made；Then the carboxymethyl of 4kg is taken
Sodium cellulosate, 17kg conductive nano ceramic powders be scattered in the premix of 70kg, then by cable extruding machine with
The speed melting extrusion of 40m/min is molded, and cooling and shaping, is then made by the electron beam irradiation 7min that energy is 8MeV low close
Degree polyethylene crosslinks, you can modified crosslinking ethylene CABLE MATERIALS is made；
Modification cross-linkable polyethylene insulation material prepared by embodiment 5, test dispersibility, space charge rejection ability, insulated electro
Resistance and tensile strength, obtain that the results are shown in Table 2.
Embodiment 6
The lithium carbonate of the hydrous tin chloride of 32kg and 8kg are added in the water of 60kg, are uniformly mixed, are then heavy with ammonium hydroxide
Shallow lake agent, is slowly added in mixed liquor, so that hydrous tin chloride is reacted under conditions of pH value is 8 with ammonium hydroxide, generates carbonic acid lithium doping
Nano tin dioxide, be then filtered by vacuum, washed 4 times, baking oven dry 12h at 75 DEG C handles 3h at 650 DEG C, makes
Obtain conductive nano ceramic powders；Then the magnesia of the low density polyethylene (LDPE) of 90kg, the antioxidant 1010 8 of 2kg and 8kg is added
In high-speed mixer, at 100 DEG C, 35min is blended with the rotating speed of 140r/min, premix is made；Then the carboxymethyl of 3kg is taken
Sodium cellulosate, 16kg conductive nano ceramic powders be scattered in the premix of 81kg, then by cable extruding machine with
The speed melting extrusion of 35m/min is molded, and cooling and shaping, is then made by the electron beam irradiation 7min that energy is 7MeV low close
Degree polyethylene crosslinks, you can is made and inhibits charge cross-linked ethylene CABLE MATERIALS；
Modification cross-linkable polyethylene insulation material prepared by embodiment 6, test dispersibility, space charge rejection ability, insulated electro
Resistance and tensile strength, obtain that the results are shown in Table 2.
Comparative example 1
In nano tin dioxide preparation process, it is not added with lithium carbonate, other preparation conditions are consistent with embodiment 6.
Modification cross-linkable polyethylene insulation material prepared by comparative example 1, it is test dispersibility, space charge rejection ability, exhausted
Edge resistance and tensile strength, obtain that the results are shown in Table 2.
Table 2：
| Performance indicator | Dispersibility | Space charge rejection ability | Insulation resistance（MΩ） | Tensile strength（MPa） |
| Embodiment 1 | It is good | It is very strong | 600 | 48 |
| Embodiment 2 | It is good | It is very strong | 550 | 52 |
| Embodiment 3 | It is good | It is very strong | 620 | 54 |
| Embodiment 4 | It is good | It is very strong | 580 | 50 |
| Embodiment 5 | It is good | It is very strong | 660 | 49 |
| Embodiment 6 | It is good | It is very strong | 650 | 56 |
| Comparative example 1 | Preferably | Generally | 480 | 40 |
Claims (9)
1. a kind of high voltage direct current cable preparation method for inhibiting charge crosslinked insulating material, which is characterized in that by chloride hydrate
Tin is mixed with lithium carbonate, and ammonium hydroxide is added and is reacted, and is then filtered by vacuum, is washed, high-temperature process after drying, obtaining conductive nano
Ceramic powders are then dispersed in the premix of low density polyethylene (LDPE), antioxidant and filler, and electronics is carried out after melting extrusion sizing
Beam irradiates, you can must be modified cross-linkable polyethylene insulation material, preparation is as follows：
（1）Hydrous tin chloride is added to the water with lithium carbonate with certain parts by weight, is uniformly mixed, is then heavy with ammonium hydroxide
Shallow lake agent, is slowly added in mixed liquor, and hydrous tin chloride is made to be reacted under pH value 7.5~9 with ammonium hydroxide, generates receiving for carbonic acid lithium doping
Rice tin oxide, is then filtered by vacuum, is washed, oven drying, then carrying out high-temperature process, and conductive nano ceramic powders are made；
Wherein, 20~40 parts by weight of hydrous tin chloride, 4~12 parts by weight of lithium carbonate, 48~76 parts by weight of water；
（2）Low density polyethylene (LDPE), antioxidant and filler are pressed into certain parts by weight weighing, are added in high-speed mixer, certain
Temperature and rotating speed under be blended, be made premix；Wherein, 88~94 parts by weight of low density polyethylene (LDPE), 1~2 weight of antioxidant
Measure part, 5~10 parts by weight of filler；
（3）Under the peptizaiton of sodium carboxymethylcellulose, make step（1）The conductive nano ceramic powders of gained are scattered in step
（2）In the premix of gained, melting extrusion molding, and cooling and shaping are then carried out by cable extruding machine, then pass through electronics
Beam irradiation makes low density polyethylene (LDPE) crosslink, you can is made and inhibits charge crosslinked polyethylene insulation material；Wherein, conductive nano
12~18 parts by weight of ceramic powders, 78~86 parts by weight of premix, 2~4 parts by weight of sodium carboxymethylcellulose.
2. a kind of high voltage direct current cable preparation method for inhibiting charge crosslinked insulating material according to claim 1, special
Sign is：Step（1）The washing times are 3~5 times, and drying temperature is 70~90 DEG C, and drying time is 8~12h.
3. a kind of high voltage direct current cable preparation method for inhibiting charge crosslinked insulating material according to claim 1, special
Sign is：Step（1）The temperature of the high-temperature process is 600~700 DEG C, and the time is 3~4h.
4. a kind of high voltage direct current cable preparation method for inhibiting charge crosslinked insulating material according to claim 1, special
Sign is：Step（2）The antioxidant is antioxidant 1010, antioxidant 164, antioxidant 264, antioxidant 1076 or antioxidant
At least one of 168.
5. a kind of high voltage direct current cable preparation method for inhibiting charge crosslinked insulating material according to claim 1, special
Sign is：Step（2）The filler is one or more of magnesia, silica, aluminium oxide, zinc oxide or barium titanate.
6. a kind of high voltage direct current cable preparation method for inhibiting charge crosslinked insulating material according to claim 1, special
Sign is：Step（2）The mixing temperature of the high-speed mixer is 80~120 DEG C, and rotating speed is 120~150r/min, when mixing
Between be 25~40min.
7. a kind of high voltage direct current cable preparation method for inhibiting charge crosslinked insulating material according to claim 1, special
Sign is：Step（3）The unit component of the cable extruding machine includes pay off rack, leading-in bracket, host, bosh, drying, print
Word machine, crawling traction, drawing and rolling machine and temperature controlled electrical operation cabinet, cable squeeze out a diameter of 8~12mm, and it is 30 to go out linear velocity
~40m/min.
8. a kind of high voltage direct current cable preparation method for inhibiting charge crosslinked insulating material according to claim 1, special
Sign is：Step（3）In the electron beam irradiation, beam energy is 5~8MeV, and pulse frequency is 20~50Hz, when irradiation
Between be 5~10min.
9. a kind of high voltage direct current cable that any one of claim 1~8 preparation method is prepared inhibits charge crosslinking
Insulating materials.
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| CN110092976A (en) * | 2019-05-21 | 2019-08-06 | 远程电缆股份有限公司 | One kind preventing remaining halogen-free and low-smoke flame-retardant polyolefin material of space electronic and preparation method thereof |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110092976A (en) * | 2019-05-21 | 2019-08-06 | 远程电缆股份有限公司 | One kind preventing remaining halogen-free and low-smoke flame-retardant polyolefin material of space electronic and preparation method thereof |
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