CN108285565A - Extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material and preparation method - Google Patents
Extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material and preparation method Download PDFInfo
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- CN108285565A CN108285565A CN201810028917.0A CN201810028917A CN108285565A CN 108285565 A CN108285565 A CN 108285565A CN 201810028917 A CN201810028917 A CN 201810028917A CN 108285565 A CN108285565 A CN 108285565A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/005—Stabilisers against oxidation, heat, light, ozone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
- B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/45—Axially movable screws
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/69—Filters or screens for the moulding material
- B29C48/693—Substantially flat filters mounted at the end of an extruder screw perpendicular to the feed axis
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0025—Crosslinking or vulcanising agents; including accelerators
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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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
- C08L2312/00—Crosslinking
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material and preparation method, the ultra-clean processes for chemically crosslinked polyethylene Insulation Material includes the raw material of following parts by weight：90~110 parts of low density polyethylene (LDPE), 0.1~0.4 part of antioxidant, 1.5~2.5 parts of crosslinking agent；The preparation method of the ultra-clean processes for chemically crosslinked polyethylene Insulation Material includes：S1, material prepare；S2, low density polyethylene (LDPE) and antioxidant are mixed in kneader screw extruder, filter, squeeze out, are granulated；S3, particle mixture A through dehydration, screening, vulcanization, removal of impurities, being mixed into of crosslinking agent, dry；S4, mixture B are warm, infiltration, diffusion, absorb afterwards；S5, finished product are cooling, removal of impurities, detection, pack.Preparation method proposed by the present invention, realizes continuous long-cycle production, and production capacity is high, production efficiency is big, and the stability of product is good, and production cost is low, and antioxidant is uniformly dispersed, and the product impurity content of preparation is low, size is small.
Description
Technical field
The present invention relates to new material technology field more particularly to a kind of extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene
Insulation Material and preparation method.
Background technology
Currently, the chemical crosslinking of twin-screw one-step method is that crosslinking agent is added to antioxidant in the case where temperature is less than 120 DEG C
Molten state low density polyethylene (LDPE) in, by single-screw low-temperature extruding pelletization, make polyvinyl resin, antioxidant and crosslinking agent mixing
Obtain chemical crosslinking Insulation Material.The shortcomings that such method is：1, low temperature Strong shear processing destroys resin structure, reduces Insulation Material electricity
Performance；2, processing temperature is low, and polyethylene viscosity is big, it is difficult to ensure the evenly dispersed of antioxidant and crosslinking agent；3, crosslinking agent is squeezing
Go out process addition, decomposition of the crosslinking agent in extrusion can not be avoided, generates precrosslink；4, Single screw extrusion prilling temperature
It is low, high mesh number filter screen can not be installed additional, product impurity is unable to control.
And twin-screw ultra-clean processes for chemically crosslinked polyethylene Insulation Material is produced, mainly use high temperature by polyethylene tree at present
Fat and antioxidant melting are through filter screen filtration, and absorption technique produces after cooperation.The shortcomings that such method is：1, twin-screw temperature control
Make simple for process, inside screw regional area can be long because of non-uniform temperature and residence time of material, generates burnt material, causes to produce
Production capacity is less than 1T/h, with short production cycle and need to frequently replace high mesh number filter screen, reduces production efficiency and increases and is produced into
This；2, dust is larger in production process, has harmfulness, and impurity in Insulation Material to the health of production environment and operating personnel
Quantity and size are unable to get effective control.Based on this, it is poly- that the present invention proposes that a kind of extra-high-tension cable ultra-clean is chemically crosslinked
Ethylene Insulation Material and preparation method.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of extra-high-tension cable proposed is used and surpassed
Clean chemistry cross-linked polyethylene insulating material and preparation method.
Extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material, includes the raw material of following parts by weight：Low-density is poly-
90~110 parts of ethylene, 0.1~0.4 part of antioxidant, 1.5~2.5 parts of crosslinking agent.
Preferably, the ultra-clean processes for chemically crosslinked polyethylene Insulation Material includes the raw material of following parts by weight：Low-density is poly-
100 parts of ethylene, 0.2 part of antioxidant, 2 parts of crosslinking agent.
The invention also provides the extra-high-tension cable preparation methods of ultra-clean processes for chemically crosslinked polyethylene Insulation Material, including with
Lower step：
S1, according to 90~110 parts of low density polyethylene (LDPE), 0.1~0.4 part of antioxidant, 1.5~2.5 parts of crosslinking agent weighs each raw material,
It is spare；
S2, by the step S1 low density polyethylene (LDPE)s weighed and antioxidant, weighed feeding system with resultant vector by automatic charging device
System is added in reciprocal single screw extrusion machine, adjusts the parameter of kneader screw extruder, installs 4 layers of filter screen additional, 4 layers of the installation
High-precision filtration mesh number is 500 mesh in filter screen, and 190~210 DEG C of pelletizing die plate temperature is squeezed out through reciprocal single screw extrusion machine
Up to particle mixture A；
S3, the low density polyethylene (LDPE) particle mixture A that antioxidant is added is sent by closed circulation water system pressurization to dehydration
Machine goes water, Vibration Screen to cut grain exception particle through dewaterer, and mixture A vertically falls into buffer bin and weighing silo, mixes
Material A is heated to 60~80 DEG C through fluid bed, is cleaned by cyclone separator, into crosslinking agent hybrid system, adds in mixture A
Enter 60~80 DEG C of crosslinking agent, controls hybrid system 3~8rpm of rotating speed, 60~80 DEG C of temperature, 600~1200s of mixing to mixing
Expect A dry tack frees to get to mixture B；
S4, mixture B vertically fall into rear absorption plant, are kept the temperature, permeated, spread, absorbed afterwards, and keep the temperature, infiltration, diffusion and
Carry out nitrogen protection in absorption process afterwards, mixture B is warm, infiltration, diffusion, it is rear absorb after up to extra-high-tension cable with super clean
Cross-linked polyethylene insulating material is learned in purification；
S5, extra-high-tension cable with ultra-clean processes for chemically crosslinked polyethylene Insulation Material through the uniform blanking of rotating blanking apptss, it is cold through fluid bed
But finished product bin is entered back into 25~45 DEG C, by cyclone separator removal of impurities, through apparatus for separating metals, online and offline defects inspecting
System removes the remaining large scale impurity in product, and analysing impurity size and quantity, is meeting to different voltages grade products
Packaging is completed in the 1000 grades of toilets ISO.
Preferably, 250~400rpm of reciprocating screw rotating speed, extruder temperature 80 in the parameter of the kneader screw extruder~
130 DEG C, 100~160 DEG C of barrel temperature, 150~190 DEG C of 35~70rpm of melt revolution speed, melt pump temperature, melt pump discharge
Pressure is 160~200bar, 150~190 DEG C of flange temperature, 150~190 DEG C of net-changing device temperature, 180~205 DEG C of melt temperature.
Preferably, the holding temperature is 60~80 DEG C, 8~16h of soaking time.
Preferably, the 0.05~0.15Mpa of nitrogen pressure, it is further preferred that the nitrogen pressure 0.1Mpa.
Compared with prior art, beneficial effects of the present invention are：
1, by using reciprocal single screw rod flexible shear and expressing technique, 500 height of eye mesh number filter screens are installed additional, realize extra-high voltage
The continuous long-cycle production of cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material, production capacity is high, production efficiency is big, improves Insulation Material
The stability of product, and reduce production cost；
2, using nitrogen protection, heat preservation, infiltration, diffusion, rear absorption technique overcome the poly- of twin-screw one-step method chemical crosslinking initiation
Ethylene Insulation Material precrosslink, and the phenomenon that Insulation Material changes colour caused by rear absorption technique is improper is avoided, realize antioxygen
Agent be uniformly added into and the uniform pickup of crosslinking agent；
3, ultra-clean superelevation is produced using the process combination of high-precision filtration net, fluid bed, cyclone separator and apparatus for separating metals
Voltage cable processes for chemically crosslinked polyethylene Insulation Material, and realize the online and offline detection monitoring of Insulation Material impurity；
4, the product impurity content of preparation is low, size is small, reaches import similar product level, reaches wanting for ultra-clean CABLE MATERIALS
It asks, realizes that 50~70 μm of impurity are no more than 1/Kg in Insulation Material product, the application for being Insulation Material in extra-high-tension cable provides
Better prerequisite.
Description of the drawings
Fig. 1 is the preparation flow figure of extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material proposed by the present invention.
In figure, 001, raw material cabin, 002 powder feeding station, 003, material controlling scale, 004, filler weigher, 005, single screw rod host,
006, Melt Pump, 007, net-changing device, 008, underwater pelletizer, 009, water pump, 010, water tank, 011, dewaterer, 012, waste bin,
013, the first waste discharge case, 014, vibrating screen, the 015, second waste discharge case, 016, third waste discharge case, 017, surge bunker, 018, first takes
Sample storehouse, 019, measuring chute, 020, sampling box, the 021, first cyclone separator, the 022, first dust bucket, the 023, first wind turbine,
024, first filter, the 025, first ebullated bed, 026, shake tank, 027, rear absorbing cabin, the 028, second wind turbine, the 029, second filtering
Device, 030, cooler, 031, third filter, the 032, second ebullated bed, the 033, second cyclone separator, the 034, second dust
Bucket, 035, finished bin, 036, online Impurity Detection System, 037, apparatus for separating metals, the 038, second sampling storehouse, 039, be packaged station ground
Pound.
Specific implementation mode
Referring to Fig.1, the present invention is made further to explain with reference to specific embodiment.
Embodiment, extra-high-tension cable proposed by the present invention ultra-clean processes for chemically crosslinked polyethylene Insulation Material, including it is following heavy
Measure the raw material of part：100 parts of low density polyethylene (LDPE), 0.2 part of antioxidant, 2 parts of crosslinking agent；
Preparation method includes the following steps：
S1, according to 100 parts of low density polyethylene (LDPE), 0.2 part of antioxidant, 2 parts of crosslinking agent weighs each raw material, spare；
S2, by the step S1 low density polyethylene (LDPE)s weighed and antioxidant, weighed feeding system with resultant vector by automatic charging device
System is added in reciprocal single screw extrusion machine, adjustment reciprocating screw rotating speed 300rpm, 100 DEG C of extruder temperature, 130 DEG C of barrel temperature,
170 DEG C of melt revolution speed 50rpm, melt pump temperature, melt pump discharge pressure are 180bar, 170 DEG C of flange temperature, net-changing device temperature
170 DEG C of degree, 195 DEG C of melt temperature install 4 layers of filter screen additional, and high-precision filtration mesh number is in 4 layers of filter screen of the installation
500 mesh, 200 DEG C of pelletizing die plate temperature are squeezed out through reciprocal single screw extrusion machine up to particle mixture A；
S3, the low density polyethylene (LDPE) particle mixture A that antioxidant is added is sent by closed circulation water system pressurization to dehydration
Machine goes water, Vibration Screen to cut grain exception particle through dewaterer, and mixture A vertically falls into buffer bin and weighing silo, mixes
Material A is heated to 70 DEG C through fluid bed, is cleaned by cyclone separator, into crosslinking agent hybrid system, 70 are added in mixture A
DEG C crosslinking agent, control hybrid system rotating speed 5rpm, temperature 70 C, mixing 800s to mixture A dry tack frees is to get to mixing
Expect B；
S4, mixture B vertically fall into rear absorption plant, are kept the temperature, permeated, spread, absorbed afterwards, and holding temperature is 70 DEG C, is protected
Warm time 14h, and keep the temperature, carry out nitrogen protection, nitrogen pressure 0.1Mpa, mixture B warps in infiltration, diffusion and rear absorption process
Up to extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material after heat preservation, infiltration, diffusion, rear absorption；
S5, extra-high-tension cable with ultra-clean processes for chemically crosslinked polyethylene Insulation Material through the uniform blanking of rotating blanking apptss, it is cold through fluid bed
But finished product bin is entered back into 38 DEG C, by cyclone separator removal of impurities, through apparatus for separating metals, online and offline defects inspecting system
System removes the remaining large scale impurity in product, and analysing impurity size and quantity, is meeting to different voltages grade products
Packaging is completed in the 1000 grades of toilets ISO.
To embodiment prepare processes for chemically crosslinked polyethylene Insulation Material carry out performance detection, and to the production capacity in preparation process into
Row detection, it is as a result as follows：
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, and it is any
Those familiar with the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its invents
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material, which is characterized in that include the raw material of following parts by weight：
90~110 parts of low density polyethylene (LDPE), 0.1~0.4 part of antioxidant, 1.5~2.5 parts of crosslinking agent.
2. extra-high-tension cable according to claim 1 ultra-clean processes for chemically crosslinked polyethylene Insulation Material, which is characterized in that institute
The ultra-clean processes for chemically crosslinked polyethylene Insulation Material stated includes the raw material of following parts by weight：100 parts of low density polyethylene (LDPE), antioxidant
0.2 part, 2 parts of crosslinking agent.
3. the extra-high-tension cable preparation method of ultra-clean processes for chemically crosslinked polyethylene Insulation Material, which is characterized in that including following step
Suddenly：
S1, according to 90~110 parts of low density polyethylene (LDPE), 0.1~0.4 part of antioxidant, 1.5~2.5 parts of crosslinking agent weighs each raw material,
It is spare；
S2, by the step S1 low density polyethylene (LDPE)s weighed and antioxidant, weighed feeding system with resultant vector by automatic charging device
System is added in reciprocal single screw extrusion machine, adjusts the parameter of kneader screw extruder, installs 4 layers of filter screen additional, 4 layers of the installation
High-precision filtration mesh number is 500 mesh in filter screen, and 190~210 DEG C of pelletizing die plate temperature is squeezed out through reciprocal single screw extrusion machine
Up to particle mixture A；
S3, the low density polyethylene (LDPE) particle mixture A that antioxidant is added is sent by closed circulation water system pressurization to dehydration
Machine goes water, Vibration Screen to cut grain exception particle through dewaterer, and mixture A vertically falls into buffer bin and weighing silo, mixes
Material A is heated to 60~80 DEG C through fluid bed, is cleaned by cyclone separator, into crosslinking agent hybrid system, adds in mixture A
Enter 60~80 DEG C of crosslinking agent, controls hybrid system 3~8rpm of rotating speed, 60~80 DEG C of temperature, 600~1200s of mixing to mixing
Expect A dry tack frees to get to mixture B；
S4, mixture B vertically fall into rear absorption plant, are kept the temperature, permeated, spread, absorbed afterwards, and keep the temperature, infiltration, diffusion and
Carry out nitrogen protection in absorption process afterwards, mixture B is warm, infiltration, diffusion, it is rear absorb after up to extra-high-tension cable with super clean
Cross-linked polyethylene insulating material is learned in purification；
S5, extra-high-tension cable with ultra-clean processes for chemically crosslinked polyethylene Insulation Material through the uniform blanking of rotating blanking apptss, it is cold through fluid bed
But finished product bin is entered back into 25~45 DEG C, by cyclone separator removal of impurities, through apparatus for separating metals, online and offline defects inspecting
System removes the remaining large scale impurity in product, and analysing impurity size and quantity, is meeting to different voltages grade products
Packaging is completed in the 1000 grades of toilets ISO.
4. the extra-high-tension cable according to claim 3 preparation method of ultra-clean processes for chemically crosslinked polyethylene Insulation Material,
Be characterized in that, 250~400rpm of reciprocating screw rotating speed in the parameter of the kneader screw extruder, 80~130 DEG C of extruder temperature,
100~160 DEG C of barrel temperature, 150~190 DEG C of 35~70rpm of melt revolution speed, melt pump temperature, melt pump discharge pressure are
160~200bar, 150~190 DEG C of flange temperature, 150~190 DEG C of net-changing device temperature, 180~205 DEG C of melt temperature.
5. the extra-high-tension cable according to claim 3 preparation method of ultra-clean processes for chemically crosslinked polyethylene Insulation Material,
It is characterized in that, the holding temperature is 60~80 DEG C, 8~16h of soaking time.
6. the extra-high-tension cable according to claim 3 preparation method of ultra-clean processes for chemically crosslinked polyethylene Insulation Material,
It is characterized in that, the 0.05~0.15Mpa of nitrogen pressure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810028917.0A CN108285565A (en) | 2018-01-12 | 2018-01-12 | Extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material and preparation method |
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| CN201810028917.0A CN108285565A (en) | 2018-01-12 | 2018-01-12 | Extra-high-tension cable ultra-clean processes for chemically crosslinked polyethylene Insulation Material and preparation method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942933A (en) * | 2019-02-22 | 2019-06-28 | 全球能源互联网研究院有限公司 | A kind of direct current cables Insulation Material and preparation method thereof inhibiting space charge |
| CN109942932A (en) * | 2019-02-22 | 2019-06-28 | 全球能源互联网研究院有限公司 | A kind of heatproof high-voltage cable insulating material and preparation method thereof |
| CN110878152A (en) * | 2018-09-06 | 2020-03-13 | 浙江万马高分子材料有限公司 | Polyethylene insulating material and preparation method and application thereof |
| CN112280149A (en) * | 2020-11-06 | 2021-01-29 | 南京地中缆科技有限公司 | Preparation method of high-voltage and ultrahigh-voltage cable insulating material |
| CN115709555A (en) * | 2022-11-11 | 2023-02-24 | 宏岳塑胶集团股份有限公司 | Production process of crosslinked polyethylene PE-Xa (polyethylene-Xa) pipe and high-speed raw material mixer |
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| CN1523052A (en) * | 2003-02-20 | 2004-08-25 | �й�ʯ�ͻ����ɷ�����˾ | Special material for crosslinked polyethylene for rotational molding |
| CN1524899A (en) * | 2003-02-28 | 2004-09-01 | 中国石油天然气股份有限公司 | Special material for crosslinked polyethylene for rotational molding and preparation method thereof |
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| CN110878152B (en) * | 2018-09-06 | 2022-06-17 | 浙江万马高分子材料有限公司 | Polyethylene insulating material and preparation method and application thereof |
| CN109942933A (en) * | 2019-02-22 | 2019-06-28 | 全球能源互联网研究院有限公司 | A kind of direct current cables Insulation Material and preparation method thereof inhibiting space charge |
| CN109942932A (en) * | 2019-02-22 | 2019-06-28 | 全球能源互联网研究院有限公司 | A kind of heatproof high-voltage cable insulating material and preparation method thereof |
| CN112280149A (en) * | 2020-11-06 | 2021-01-29 | 南京地中缆科技有限公司 | Preparation method of high-voltage and ultrahigh-voltage cable insulating material |
| CN115709555A (en) * | 2022-11-11 | 2023-02-24 | 宏岳塑胶集团股份有限公司 | Production process of crosslinked polyethylene PE-Xa (polyethylene-Xa) pipe and high-speed raw material mixer |
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