CN102604339B - Preparation method of high-heat-resistance high-strength half tubes used for embedded electric cables - Google Patents
Preparation method of high-heat-resistance high-strength half tubes used for embedded electric cables Download PDFInfo
- Publication number
- CN102604339B CN102604339B CN2012100648871A CN201210064887A CN102604339B CN 102604339 B CN102604339 B CN 102604339B CN 2012100648871 A CN2012100648871 A CN 2012100648871A CN 201210064887 A CN201210064887 A CN 201210064887A CN 102604339 B CN102604339 B CN 102604339B
- Authority
- CN
- China
- Prior art keywords
- district
- temperature
- preparation
- weight parts
- strength
- 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.)
- Expired - Fee Related
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- -1 propylene-ethylene Chemical group 0.000 claims abstract description 34
- 239000003063 flame retardant Substances 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 13
- 239000004698 Polyethylene Substances 0.000 claims abstract description 8
- 229920000573 polyethylene Polymers 0.000 claims abstract description 8
- 229920005604 random copolymer Polymers 0.000 claims abstract description 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920003023 plastic Polymers 0.000 claims description 23
- 239000004033 plastic Substances 0.000 claims description 23
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 22
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 22
- 238000001125 extrusion Methods 0.000 claims description 21
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 11
- 238000005485 electric heating Methods 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 10
- 239000011236 particulate material Substances 0.000 claims description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 7
- 238000005538 encapsulation Methods 0.000 claims description 7
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 7
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 claims description 7
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 7
- 238000005453 pelletization Methods 0.000 claims description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 5
- 239000005977 Ethylene Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- FGHOOJSIEHYJFQ-UHFFFAOYSA-N (2,4-ditert-butylphenyl) dihydrogen phosphite Chemical compound CC(C)(C)C1=CC=C(OP(O)O)C(C(C)(C)C)=C1 FGHOOJSIEHYJFQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000002202 Polyethylene glycol Substances 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 229920001223 polyethylene glycol Polymers 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000004800 polyvinyl chloride Substances 0.000 description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 6
- 229920000915 polyvinyl chloride Polymers 0.000 description 6
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 239000004801 Chlorinated PVC Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 241000239290 Araneae Species 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- 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
- B29C48/40—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 two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to a preparation method of high-heat-resistance high-strength half tubes used for embedded electric cables, which includes steps of utilizing 63-75 weight parts of polyethylene glycol terephthalate as raw materials, adding 13-18 weight parts of propylene-ethylene random copolymer, 8-12 weight parts of fire retardant masterbatches, 3.5-6.0 weight parts of maleic anhydride grafting polyethylene and 0.5-1.0 weight part of Triisodecyl (2,4-di-tertiary butyl phenyl) phosphite ester, and preparing the half tubes by drying, dewatering, mixing, stirring, extruding, pelleting, extruding, forming, cooling and forming. The half tubes prepared by the preparation method are high in vicat softening temperature, fine in insulation performance, high in corrosion resistance and fire retardant level, resistant to creep deformation, fine in pressure and tension resistance and applicable to fields of protection modifying of directly-embedded cables, protection of ground access cables and paving protection tubes of seabed cables and the like.
Description
Technical field
The present invention relates to the preparation method of plastic Huff pipe, a kind of type ground-buried power cable is with the preparation method of high heat-resistant high-strength Huff pipe specifically.
Background technology
A kind of significant variation of modern city, the various high and low pressure electric power circuits of the Miru spider net that is stood in great numbers in road both sides, city are exactly imbedded underground, eliminate people's " visual pollution ", reach the purpose of beautifying city.Underground power cable line arrangement mode mainly contains that directly buried installation, groove lay, comb lays, and wherein comb lays because its floor space is few, and simple and easy, the characteristics such as construction cost is low, short construction period of constructing are widely used in power industry.The type ground-buried power cable protective tube (comb) of early application generally adopts the cement asbestos tube, must close a road to traffic with long-time by dig on a wide area when burying underground, and this brings great inconvenience for the traffic in city.Along with the exploitation of synthetic resins and the development of plastic pipe molding technology, in succession develop glass fiber reinforced plastic wound tube, chlorinated polyvinyl chloride pipe (CPVC pipe), polyalkenyl halides pipe (PVC-C pipe) etc. both at home and abroad, and be used for buried high voltage power cable protecting pipe on a large scale.
Fast development along with the national grid construction; type ground-buried power cable arises at the historic moment with Huff pipe; development is rapid, and such pipeline adopts half of pipe opposite opened unitized construction, is easy to folding and installs; adopt the rubber weather strip sealing to be connected with the buckle-type pipe fitting; Stability Analysis of Structures, easy to connect, be applied to the later stage maintenance of early stage direct-buried cable protection transformation and cable; the inspection and maintenance of ground incoming end cable, Submarine Cable Laying protective tube etc.At present, the type ground-buried power cable that uses in a large number has modified polyvinyl chloride pipe and modified polypropene pipe etc. with Huff pipe.The modified polyvinyl chloride Huff pipe is take polyvinyl chloride (PVC) RESINS (polyvinyl chloride resin) as raw material, adds the auxiliary agents such as appropriate chlorinated polyvinyl chloride (CPVC), stablizer, lubricant, processes through mixing, extruding-out process; Modified polyvinyl chloride Huff pipe vicat softening temperature is 110 ℃ of left and right, and ring stiffness is 10KN/m
2Left and right, flame retardant properties and good mechanical properties.The cable duct bank through-flow test shows, when the working temperature that continues current-carrying when cable core was 9O ℃, the long-term temperature of protecting pipe inwall was 7O ℃ of left and right, and when cable core temperature occurs transshipping when being 105 ℃ once in a while, the temperature of Huff pipe inwall reaches 9O ℃.The modified polyvinyl chloride Huff pipe is more responsive to the reaction of temperature variation, and its performance is subjected to environment or external force to affect for a long time obvious decline, causes protecting pipe to deform, and loses gradually and uses function.The modified polypropene Huff pipe is take acrylic resin as raw material, adds amount of retardant, properties-correcting agent, processes through mixing, extruding-out process; Modified polypropene Huff pipe vicat softening temperature is 130 ℃ of left and right, and ring stiffness is higher, and mechanical property is good; Its shortcoming: flame retardant rating is lower, and cost is slightly high.Thereby the research and development vicat softening temperature is high, plastic Huff pipe that creep-resistant property good, flame retardant rating is high has caused material engineering those skilled in the art's concern.Retrieve a large amount of patent documentations and the research paper of publishing, there is not yet and adopt polyethylene terephthalate (PET) to be raw material, add propylene-ethylene random copolymers (PPR), fire retardant master batch, maleic anhydride grafted polyethylene (PE-g-MAH), three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester, the preparation type ground-buried power cable report of Huff pipe.
Summary of the invention
For the defective such as overcome that existing modified polyvinyl chloride Huff pipe exists that vicat softening temperature is low, creep resistance is poor and modified polypropene Huff pipe flame retardant rating is low, the invention provides a kind of type ground-buried power cable with the preparation method of high heat-resistant high-strength Huff pipe.Present method is take polyethylene terephthalate (PET) as raw material, add propylene-ethylene random copolymers (PPR), fire retardant master batch, maleic anhydride grafted polyethylene (PE-g-MAH), three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester is by desiccant dehumidification, mix, extrude pelletizing, extrusion moulding, cooling and shaping processes and form.
Adopt the Huff pipe of present method preparation; vicat softening temperature is high, good insulation preformance, erosion resistance is strong, flame retardant rating is high, creep-resistant property and the resistance to compression tensile property good, be applicable to the fields such as protection, Submarine Cable Laying protective tube of direct-buried cable protection transformation, ground incoming end cable.
For the following technical scheme that realizes that the object of the invention adopts:
Formula
Polyethylene terephthalate (PET) 63～75 weight parts, propylene-ethylene random copolymers (PPR) 13～18 weight parts, fire retardant master batch 8～12 weight parts, maleic anhydride grafted polyethylene (PE-g-MAH) 3.5～6.0 weight parts, three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, 0.5～1.0 weight part.
The preparation method
PET is placed in electric heating constant-temperature blowing drying box, controls 148 ± 1 ℃ of electric heating constant-temperature blowing drying box temperature and carry out drying; After dry 4h, weighing is placed in homogenizer, adds successively PPR, PE-g-MAH after metering, controls 107 ± 1 ℃ of homogenizer rotating speed 300r/min, temperature, mixes 7 min; Add again fire retardant master batch, three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester after metering, continue to mix 5 min and become compounds; Compound is placed in the Vented Co-rotating Parallel Twin-screw Extruder hopper, control the Vented Co-rotating Parallel Twin-screw Extruder barrel temperature: 208～213 ℃, I district, 220～225 ℃, II district, 234～239 ℃, III district, 245～250 ℃, IV district, 255～260 ℃, V district, 262～265 ℃, VI district, 267～270 ℃, VII district controls the Vented Co-rotating Parallel Twin-screw Extruder die head temperature: 263～266 ℃, extrude pelletizing and become particulate material; Particulate material is placed in single screw rod plastic tube extrusion forming machine hopper, control single screw rod plastic tube extrusion forming machine barrel temperature: 240～245 ℃, I district, 252～257 ℃, II district, 260～263 ℃, III district, 264～267 ℃, IV district, 261～264 ℃, V district, 256～259 ℃, VI district, 254～257 ℃, VII district controls single screw rod plastic tube extrusion forming machine die head temperature: 252～255 ℃, carry out extrusion moulding; The tubing of extruding is drawn in cooling tank, cut into plastic Huff pipe after cooling and shaping.
Polyethylene terephthalate of the present invention (PET), its limiting viscosity are that 0.645dL/g, fusing point are 259 ℃.
In propylene-ethylene random copolymers of the present invention (PPR), the ethylene content massfraction is 4%.
Fire retardant master batch of the present invention is comprised of micro encapsulation red phosphorus, ethylene-vinyl acetate copolymer and three kinds of components of oxidic polyethylene, and wherein the weight percent of each component is: micro encapsulation red phosphorus accounts for 80%, ethylene-vinyl acetate copolymer accounts for 15%, oxidic polyethylene accounts for 5%.
In maleic anhydride grafted polyethylene of the present invention (PE-g-MAH), the maleic anhydride grafting ratio massfraction is 0.8%.
The invention has the beneficial effects as follows: 1. adopting PE-g-MAH is compatilizer, and PPR is toughening material, and PET is carried out toughening modifying, prepares PET/PE-g-MAH/PPR blend alloy material, increases substantially compressive strength and the notched Izod impact strength of blend alloy material; 2. add the fire retardant master batch PET/PE-g-MAH/PPR blend alloy material is carried out modification, increase substantially the oxygen index of blend alloy material; 3. the Huff pipe of present method preparation; vicat softening temperature is high, good insulation preformance, erosion resistance is strong, flame retardant rating is high, creep-resistant property and the resistance to compression tensile property good, be applicable to the fields such as protection, Submarine Cable Laying protective tube of direct-buried cable protection transformation, ground incoming end cable.
Embodiment
Embodiment 1:
Be that 0.645dL/g, fusing point are that the PET of 259 ℃ is placed in electric heating constant-temperature blowing drying box with limiting viscosity, control 148 ℃ of electric heating constant-temperature blowing drying box temperature, after dry 4h, take PET 69Kg and be placed in homogenizer, adding successively the ethylene content massfraction is that 4% PPR 15Kg, maleic anhydride grafting ratio massfraction are 0.8% PE-g-MAH 4.8Kg, control homogenizer rotating speed 300r/min, 107 ℃ of temperature mix 7 min; Add again the fire retardant master batch 10Kg that contains micro encapsulation red phosphorus 80%, ethylene-vinyl acetate copolymer 15%, oxidic polyethylene 5%, add simultaneously three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.75Kg, continue to mix 5min and become compound; Compound is placed in the Vented Co-rotating Parallel Twin-screw Extruder hopper, control the Vented Co-rotating Parallel Twin-screw Extruder barrel temperature: 208 ℃, I district, 220 ℃, II district, 239 ℃, III district, 245 ℃, IV district, 260 ℃, V district, 262 ℃, VI district, 270 ℃, VII district controls the Vented Co-rotating Parallel Twin-screw Extruder die head temperature: 266 ℃, extrude pelletizing and become particulate material; Particulate material is placed in single screw rod plastic tube extrusion forming machine hopper, control single screw rod plastic tube extrusion forming machine barrel temperature: 240 ℃, I district, 257 ℃, II district, 263 ℃, III district, 267 ℃, IV district, 264 ℃, V district, 259 ℃, VI district, 257 ℃, VII district controls single screw rod plastic tube extrusion forming machine die head temperature: 255 ℃, carry out extrusion moulding; The tubing of extruding is drawn in cooling tank, cut into plastic Huff pipe after cooling and shaping.
Embodiment 2:
Be that 0.645dL/g, fusing point are that the PET of 259 ℃ is placed in electric heating constant-temperature blowing drying box with limiting viscosity, control 147 ℃ of electric heating constant-temperature blowing drying box temperature, after dry 4h, take PET 73Kg and be placed in homogenizer, adding successively the ethylene content massfraction is that 4% PPR 17Kg, maleic anhydride grafting ratio massfraction are 0.8% PE-g-MAH 5.0Kg, control homogenizer rotating speed 300r/min, 106 ℃ of temperature mix 7 min; Add again the fire retardant master batch 11Kg that contains micro encapsulation red phosphorus 80%, ethylene-vinyl acetate copolymer 15%, oxidic polyethylene 5%, add simultaneously three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.9Kg, continue to mix 5min and become compound; Compound is placed in the Vented Co-rotating Parallel Twin-screw Extruder hopper, control the Vented Co-rotating Parallel Twin-screw Extruder barrel temperature: 213 ℃, I district, 225 ℃, II district, 234 ℃, III district, 250 ℃, IV district, 255 ℃, V district, 265 ℃, VI district, 267 ℃, VII district controls the Vented Co-rotating Parallel Twin-screw Extruder die head temperature: 263 ℃, extrude pelletizing and become particulate material; Particulate material is placed in single screw rod plastic tube extrusion forming machine hopper, control single screw rod plastic tube extrusion forming machine barrel temperature: 245 ℃, I district, 252 ℃, II district, 260 ℃, III district, 264 ℃, IV district, 261 ℃, V district, 256 ℃, VI district, 254 ℃, VII district controls single screw rod plastic tube extrusion forming machine die head temperature: 252 ℃, carry out extrusion moulding; The tubing of extruding is drawn in cooling tank, cut into plastic Huff pipe after cooling and shaping.
Embodiment 3:
Be that 0.645dL/g, fusing point are that the PET of 259 ℃ is placed in electric heating constant-temperature blowing drying box with limiting viscosity, control 149 ℃ of electric heating constant-temperature blowing drying box temperature, after dry 4h, take PET 64Kg and be placed in homogenizer, adding successively the ethylene content massfraction is that 4% PPR 14Kg, maleic anhydride grafting ratio massfraction are 0.8% PE-g-MAH 3.8Kg, control homogenizer rotating speed 300r/min, 108 ℃ of temperature mix 7 min; Add again the fire retardant master batch 9Kg that contains micro encapsulation red phosphorus 80%, ethylene-vinyl acetate copolymer 15%, oxidic polyethylene 5%, add simultaneously three (2,4-di-tert-butyl-phenyl) phosphorous acid ester 0.6Kg, continue to mix 5min and become compound; Compound is placed in the Vented Co-rotating Parallel Twin-screw Extruder hopper, control the Vented Co-rotating Parallel Twin-screw Extruder barrel temperature: 210 ℃, I district, 223 ℃, II district, 237 ℃, III district, 248 ℃, IV district, 257 ℃, V district, 263 ℃, VI district, 268 ℃, VII district controls the Vented Co-rotating Parallel Twin-screw Extruder die head temperature: 265 ℃, extrude pelletizing and become particulate material; Particulate material is placed in single screw rod plastic tube extrusion forming machine hopper, control single screw rod plastic tube extrusion forming machine barrel temperature: 243 ℃, I district, 255 ℃, II district, 262 ℃, III district, 265 ℃, IV district, 262 ℃, V district, 258 ℃, VI district, 256 ℃, VII district controls single screw rod plastic tube extrusion forming machine die head temperature: 253 ℃, carry out extrusion moulding; The tubing of extruding is drawn in cooling tank, cut into plastic Huff pipe after cooling and shaping.
Claims (5)
1. a type ground-buried power cable with the preparation method of high heat-resistant high-strength Huff pipe, is characterized in that:
Formula
Polyethylene terephthalate 63～75 weight parts, propylene-ethylene random copolymers 13～18 weight parts, fire retardant master batch 8～12 weight parts, maleic anhydride grafted polyethylene 3.5～6.0 weight parts, three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, 0.5～1.0 weight part;
The preparation method
1) polyethylene terephthalate is placed in electric heating constant-temperature blowing drying box, controls the electric heating constant-temperature blowing drying box temperature, dry 4h;
2) dried polyethylene terephthalate weighing is placed in homogenizer, adds successively propylene-ethylene random copolymers, maleic anhydride grafted polyethylene after metering, control homogenizer rotating speed and temperature, mix 7 min; Add again fire retardant master batch, three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester after metering, continue to mix 5 min and become compounds;
3) compound is placed in the Vented Co-rotating Parallel Twin-screw Extruder hopper, controls Vented Co-rotating Parallel Twin-screw Extruder barrel temperature and die head temperature, extrude pelletizing and become particulate material;
4) particulate material is placed in single screw rod plastic tube extrusion forming machine hopper, controls single screw rod plastic tube extrusion forming machine barrel temperature and die head temperature, be extrusion-molded into Huff pipe;
Described fire retardant master batch is comprised of micro encapsulation red phosphorus, ethylene-vinyl acetate copolymer and three kinds of components of oxidic polyethylene, and wherein the weight percent of each component is that micro encapsulation red phosphorus accounts for 80%, ethylene-vinyl acetate copolymer accounts for 15%, oxidic polyethylene accounts for 5%;
The rotating speed of described homogenizer is that 300r/min, temperature are 107 ± 1 ℃;
Described Vented Co-rotating Parallel Twin-screw Extruder barrel temperature is 208～213 ℃, I district, 220～225 ℃, II district, 234～239 ℃, III district, 245～250 ℃, IV district, 255～260 ℃, V district, 262～265 ℃, VI district, 267～270 ℃, VII district, the Vented Co-rotating Parallel Twin-screw Extruder die head temperature is 263～266 ℃;
Described single screw rod plastic tube extrusion forming machine barrel temperature is 240～245 ℃, I district, 252～257 ℃, II district, 260～263 ℃, III district, 264～267 ℃, IV district, 261～264 ℃, V district, 256～259 ℃, VI district, 254～257 ℃, VII district, controlling single screw rod plastic tube extrusion forming machine die head temperature is 252～255 ℃.
2. type ground-buried power cable according to claim 1 with the preparation method of high heat-resistant high-strength Huff pipe, is characterized in that described polyethylene terephthalate, and its limiting viscosity is that 0.645dL/g, fusing point are 259 ℃.
3. type ground-buried power cable according to claim 1 with the preparation method of high heat-resistant high-strength Huff pipe, is characterized in that in described propylene-ethylene random copolymers, the ethylene content massfraction is 4%.
4. type ground-buried power cable according to claim 1 with the preparation method of high heat-resistant high-strength Huff pipe, is characterized in that in described maleic anhydride grafted polyethylene, the maleic anhydride grafting ratio massfraction is 0.8%.
5. type ground-buried power cable according to claim 1 is with the preparation method of high heat-resistant high-strength Huff pipe, and the temperature that it is characterized in that described electric heating constant-temperature blowing drying box is 148 ± 1 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100648871A CN102604339B (en) | 2012-03-13 | 2012-03-13 | Preparation method of high-heat-resistance high-strength half tubes used for embedded electric cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100648871A CN102604339B (en) | 2012-03-13 | 2012-03-13 | Preparation method of high-heat-resistance high-strength half tubes used for embedded electric cables |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102604339A CN102604339A (en) | 2012-07-25 |
| CN102604339B true CN102604339B (en) | 2013-06-05 |
Family
ID=46522140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100648871A Expired - Fee Related CN102604339B (en) | 2012-03-13 | 2012-03-13 | Preparation method of high-heat-resistance high-strength half tubes used for embedded electric cables |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102604339B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788596A (en) * | 2014-01-17 | 2014-05-14 | 安徽万泰电缆有限公司 | Halogen-free wear-resistant cable sheath material |
| FR3102769B1 (en) * | 2019-10-30 | 2022-04-01 | Acome | PET-based polymeric matrix for electrical wires |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781446A (en) * | 2010-03-22 | 2010-07-21 | 福建师范大学 | Method for preparing plastic pipe fitting from polyethylene terephthalate (PET) bottle reclaimed material |
| CN102134360A (en) * | 2011-05-10 | 2011-07-27 | 上海远洲管业有限公司 | Preparation method of super-strong high temperature-resistant chlorinated polyvinyl chloride tubes |
| CN202103373U (en) * | 2011-05-06 | 2012-01-04 | 福建和盛塑业有限公司 | Plastic Huff pipe for cable |
-
2012
- 2012-03-13 CN CN2012100648871A patent/CN102604339B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781446A (en) * | 2010-03-22 | 2010-07-21 | 福建师范大学 | Method for preparing plastic pipe fitting from polyethylene terephthalate (PET) bottle reclaimed material |
| CN202103373U (en) * | 2011-05-06 | 2012-01-04 | 福建和盛塑业有限公司 | Plastic Huff pipe for cable |
| CN102134360A (en) * | 2011-05-10 | 2011-07-27 | 上海远洲管业有限公司 | Preparation method of super-strong high temperature-resistant chlorinated polyvinyl chloride tubes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102604339A (en) | 2012-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102604338B (en) | Preparation method of modified polyethylene terephthalate cable sheath tube | |
| CN102050993B (en) | Flame-retardant PP/nylon corrugated tube composite material and preparation method thereof | |
| CN105670109A (en) | Polypropylene composition, preparation method thereof, and polypropylene material prepared therethrough | |
| CN102786729B (en) | PE160 grade composite material for pipes and preparation method of composite material | |
| CN102134360A (en) | Preparation method of super-strong high temperature-resistant chlorinated polyvinyl chloride tubes | |
| CN103709516A (en) | High-strength polypropylene cable protection sleeve material and preparation method thereof | |
| CN105175854A (en) | Reinforced and toughened HDPE (high-density polyethylene) hollow wall winding pipe | |
| CN101974177B (en) | Multi-functional polyethylene tube and manufacturing method thereof | |
| CN102212237A (en) | Preparation method for ultrastrong earthquake resistant polyvinyl chloride pipe material | |
| CN101851363A (en) | Regeneration method of waste polyethylene | |
| CN101125941B (en) | Polyethylene pipe for non-excavation traction method construction | |
| CN102295798A (en) | Zero-halogen low-smoke flame-retardant injection molding material for branch cable and preparation as well as application thereof | |
| CN106810844A (en) | modified polyphenyl ether composition and preparation method | |
| CN104534187A (en) | Fiber reinforced thermoplastic compound pipeline and manufacturing technology thereof | |
| CN102516669A (en) | Modified polypropylene mixture for non-excavating power cable communication casing pipes and preparation method thereof | |
| CN101824180B (en) | High elasticity polyolefin hose with radiation crosslinking and preparation method thereof | |
| CN102604339B (en) | Preparation method of high-heat-resistance high-strength half tubes used for embedded electric cables | |
| CN103172937B (en) | A kind of Silane Grafted PPR pipe PP Pipe Compound and preparation method thereof | |
| CN106243465B (en) | A kind of high-intensitive, fire-retardant, anti-static polyolefin pipeline and preparation method thereof | |
| CN107236172A (en) | A kind of fiber reinforcement polyethylene winding structure wall pipe and manufacture method and manufacture raw material | |
| CN104861367A (en) | High-strength environmentally friendly polyvinyl chloride tube and production method thereof | |
| CN102095026A (en) | Polyethylene water supply pipe for trenchless construction | |
| CN104795781A (en) | Low-friction modified polypropylene/glass fiber reinforced plastic composite electrical tube and manufacturing method thereof | |
| CN103160006A (en) | Special polyethylene resin composition for tubing | |
| CN204538631U (en) | Low friction modified polypropylene/fiberglass compound electric solenoid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |