CN1508925A - Bushing tube for buried medium-high voltage power cable and production method thereof - Google Patents
Bushing tube for buried medium-high voltage power cable and production method thereof Download PDFInfo
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- CN1508925A CN1508925A CNA021485658A CN02148565A CN1508925A CN 1508925 A CN1508925 A CN 1508925A CN A021485658 A CNA021485658 A CN A021485658A CN 02148565 A CN02148565 A CN 02148565A CN 1508925 A CN1508925 A CN 1508925A
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- China
- Prior art keywords
- power cable
- polypropylene
- controlled
- calcium carbonate
- sleeve pipe
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 36
- 239000004743 Polypropylene Substances 0.000 claims abstract description 32
- -1 polypropylene Polymers 0.000 claims abstract description 32
- 229920001155 polypropylene Polymers 0.000 claims abstract description 32
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000003063 flame retardant Substances 0.000 claims abstract description 16
- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 239000000806 elastomer Substances 0.000 claims abstract description 11
- 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 claims abstract description 10
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims abstract description 9
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000000049 pigment Substances 0.000 claims abstract description 3
- 150000001875 compounds Chemical class 0.000 claims description 39
- 238000001125 extrusion Methods 0.000 claims description 16
- 239000004615 ingredient Substances 0.000 claims description 8
- 238000005453 pelletization Methods 0.000 claims description 8
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 7
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 7
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 7
- 229920002943 EPDM rubber Polymers 0.000 claims description 6
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 229920003051 synthetic elastomer Polymers 0.000 claims description 4
- 239000005061 synthetic rubber Substances 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical compound C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000010456 wollastonite Substances 0.000 claims description 2
- 229910052882 wollastonite Inorganic materials 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000011256 inorganic filler Substances 0.000 abstract description 2
- 229910003475 inorganic filler Inorganic materials 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 12
- 239000004800 polyvinyl chloride Substances 0.000 description 8
- 229920000915 polyvinyl chloride Polymers 0.000 description 8
- 230000004927 fusion Effects 0.000 description 6
- 239000008188 pellet Substances 0.000 description 6
- AUNAPVYQLLNFOI-UHFFFAOYSA-L [Pb++].[Pb++].[Pb++].[O-]S([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Mo]([O-])(=O)=O Chemical compound [Pb++].[Pb++].[Pb++].[O-]S([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Mo]([O-])(=O)=O AUNAPVYQLLNFOI-UHFFFAOYSA-L 0.000 description 5
- 239000002105 nanoparticle Substances 0.000 description 5
- 150000001805 chlorine compounds Chemical class 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 239000012491 analyte Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 210000003953 foreskin Anatomy 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003381 stabilizer Substances 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
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
- B29C2948/92561—Time, e.g. start, termination, duration or interruption
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The material comprises: polypropylene 100, elastomer 6-12, flame-retardant 15-40, nano calcium carbonate 4-10, composite inorganic filler 10-20, erucamid erucyl amide 0.1-1, and pigment 0.1-2. Weight of polypropylene is as basic reference. Specific formulated material of modified flame retardant polypropylene with nano calcium carbonate being interlarded into for sheath tube of power cable is manufactured by mixing materials in formula in high-speed mixer for 8-12 minutes, and granulating the mixed materials by extruding them from a double screw extruder. Temperature of feed cylinder of extruder is 180-220 deg.C, and rotating speed of screw is 400-1200 turns/min. sheath tube is obtained by drawing procedure from the specific formulated material. Advantages are: easy of implementation, lower requirement for manufacturing equipment and stable technique. The material possesses features of high rigidity and intensity, and fire retardation.
Description
Technical field
The present invention relates to a kind of modifying plastics, belong to nano material especially and mix after modified polypropene and the polypropylene fire retardant modification material and produce buried mesohigh power cable with the sleeve technology field production method technical field relevant with it.
Background technology
The primary raw material of present thermoplasticity power cable protecting pipe is chliorinated polyvinyl chloride and other auxiliary agents (referring to Chinese patent literature CN1081382C) such as polyvinyl chloride compound and stabilizer.Adopt that chliorinated polyvinyl chloride and polyvinyl chloride compound produce that cable sheath tube exists that poor heat stability, analyte corroding metal, protecting pipe density are big, in the production process to shortcomings such as equipment requirements height, therefore have only minority to have the producer of import equipment to have the ability to produce at present, and home equipment can't be produced the power cable protecting pipe that chliorinated polyvinyl chloride and polyvinyl chloride compound are raw material because control precision is poor.And in the polypropylene modification field, only can't satisfy withstand voltage, fire-retardant, shock-resistant, the composite request such as density is low of cable sheath tube (referring to Chinese patent literature CN1211591A with the polypropylene of elastomer and superfine micron grade inorganic filler or nano-sized filler modification, CN1063199C, CN1286278A, 01132320.5).Chinese patent CN1091122C discloses a kind of EPT rubber/thermoplastic elastomer of dynamic crosslinking, owing to adopted the dynamic crosslinking technology, the material that makes is to be the thermoplastic elastomer (TPE) with rubber properties of matrix with ethylene-propylene rubber, it is based on ethylene-propylene rubber, and polypropylene is what assist, so properties of materials is partial to flexibility after the modification, can only be used for doing the foreskin of cable, can not satisfy involved in the present invention is the high rigidity of the cable PP Pipe Compound of matrix with the polypropylene plastics, fire-retardant, the requirement of high strength etc. is difficult to obtain good application at buried mesohigh power cable aspect sleeve pipe.
Summary of the invention
Primary technical problem to be solved by this invention be according to the power cable protecting pipe use and construction requirement, a kind of buried mesohigh power cable sleeve pipe is provided, the power cable protecting pipe that utilizes this PP Pipe Compound to produce has process stabilizing, production equipment is required low, withstand voltage height, shock resistance, fire-retardant, advantage such as rigidity is high, density is low, and meets production, construction and the instructions for use of power cable protecting pipe fully.
Another technical problem to be solved by this invention provides a kind of production method of the above-mentioned sleeve pipe of production of simple, low to the production equipment requirement, process stabilizing.
The present invention solves the technical scheme that above-mentioned primary technical problem adopts: the buried mesohigh power cable of this kind sleeve pipe, it is characterized in that this sleeve pipe adopts the nano modification polypropylene dedicated material, it has following component: polypropylene 100, elastomer 6-12, fire retardant 15-40, nano-calcium carbonate 4-10, compound inorganic stuffing 10-20, erucamid erucyl amide 0.1-1, pigment 0.1-2, above be benchmark with polyacrylic weight.
At least a among the preferred ethylene propylene monomer EPR of above-mentioned elastomer, ethylene propylene diene rubber EPDM, s-B-S synthetic rubber SBS, styrene-ethylene-butadiene-styrene synthetic rubber SEBS, octene-ethylene elastomer POE, the ethene-vinyl acetate elastomer EVA.
The D of above-mentioned Nano particles of calcium carbonate
90≤ 100 nanometers.
At least two kinds of compounds of the preferred calcium carbonate superfine powder of above-mentioned compound inorganic stuffing, imvite, mica, wollastonite, talcum powder, barium sulfate, aluminium hydroxide, magnesium hydroxide.
At least a in the preferred HOPP of above-mentioned polypropylene, the COPP, polyacrylic melt flow rate (MFR) MFR≤3 grams/10 minutes.
The present invention solves the technical scheme that above-mentioned another technical problem adopts: according to above-mentioned proportion ingredient, material mixed in high-speed mixer 8-12 minute in will filling a prescription, then with compound extruding pelletization in double screw extruder, make the effective nano-calcium carbonate of cable cover(ing) and mixed the modified flame-retardant polypropylene PP Pipe Compound, wherein the double screw extruder barrel temperature is controlled at 180 ℃～220 ℃, screw speed is controlled at 400～1200 rev/mins, then the fusing of PP Pipe Compound single screw extrusion machine is extruded, the through port mold forming, cooling and shaping obtains cable sheath tube, the barrel temperature of its single screw extrusion machine is controlled at 175 ℃～200 ℃, screw speed is controlled at 40～120 rev/mins, and die temperature is controlled at 175 ℃～190 ℃.
Compare with the polyvinyl chloride compound with the raw material chliorinated polyvinyl chloride that is used to produce cable sheath tube at present, because the present invention added auxiliary agents such as elastomer, nano-calcium carbonate, compound inorganic stuffing and fire retardant in prescription, make that protecting pipe has good processing stability, processing technology is simple, protecting pipe is shock-resistant, fire-retardant, high pressure resistant, density is low, advantage such as heat-resisting.The typical performance of protecting pipe of the present invention is as follows:
| Project | Unit | Index |
| Density | ????Kg/m 3 | ????≤1200 |
| Vicat softening temperature | ????℃ | ????≥120 |
| Ring stiffness | Wall thickness≤7.00mm KPa | ????≥4 |
| Ring stiffness | Wall thickness 〉=8.50mm KPa | ????≥8 |
| Coefficient of friction | ????≤0.40 | |
| Specific insulation | ????Ω.cm | ????≥1.0×10 13 |
| Fire-retardant | ????FV-0 | |
| Falling weight impact test | 9/10 passes through |
Production method provided by the invention has advantage and effects such as simple, low to the production equipment requirement, process stabilizing, is adapted at producing on this specialized barrel and promotes the use of.
Embodiment
Below in conjunction with embodiment invention is described in further detail; be necessary to be pointed out that at this following examples only are used for that the present invention is further described; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment to the present invention according to the invention described above content.
Embodiment 1:
By following proportion ingredient will fill a prescription in material in high-speed mixer, mixed 10 minutes, then compound extruding pelletization in double screw extruder is made the effective nano-calcium carbonate of power cable cover and mix the modified flame-retardant polypropylene PP Pipe Compound, the double screw extruder barrel temperature is controlled at 200 ℃, and screw speed is controlled at 800 rev/mins.Pellet is added in the single screw extrusion machine fusion plastification in extruder, the typing of through port mould, cool off, cut, promptly make the protecting pipe that the present invention relates to, the barrel temperature of single screw extrusion machine is controlled at 190 ℃, screw speed is controlled at 80 rev/mins, and die temperature is controlled at 185 ℃.110 millimeters of the protecting pipe external diameters that present embodiment obtains, 5 millimeters of wall thickness, performance reaches the typical performance requirement of protecting pipe among the present invention.Wherein proportioning is
Polypropylene 100
EPDM????9
Fire retardant octa-BDE 30
Nano-calcium carbonate 7
Compound inorganic stuffing 15
Erucamid erucyl amide 0.5
Molybdate red 1.0
More than be benchmark with polyacrylic weight.
Compound inorganic stuffing mica and calcium carbonate superfine powder particle, the two proportioning are 1: 1.
Embodiment 2
By following proportion ingredient will fill a prescription in material in high-speed mixer, mixed 12 minutes, then compound extruding pelletization in double screw extruder is made the effective nano-calcium carbonate of power cable cover and mix the modified flame-retardant polypropylene PP Pipe Compound, the double screw extruder barrel temperature is controlled at 180 ℃, and screw speed is controlled at 400 rev/mins.Pellet is added in the single screw extrusion machine, fusion plastification in extruder, the typing of through port mould, cool off, cut, promptly make the protecting pipe that the present invention relates to, the barrel temperature of single screw extrusion machine is controlled at 175 ℃, screw speed is controlled at 120 rev/mins, and die temperature is controlled at 190 ℃.90 millimeters of the protecting pipe external diameters of present embodiment, 4 millimeters of wall thickness, performance reaches the typical performance requirement of protecting pipe among the present invention.Its proportioning is
Polypropylene 100
EPDM????12
Fire retardant 15
Nano-calcium carbonate 10
Compound inorganic stuffing 20
Erucamid erucyl amide 0.5
Molybdate red 1.0
More than be benchmark with polyacrylic weight.
Compound inorganic stuffing is the mixture of imvite and aluminium hydroxide, and the two proportioning is 1: 1.
Embodiment 3
By following proportion ingredient will fill a prescription in material in high-speed mixer, mixed 10 minutes, then compound extruding pelletization in double screw extruder is made the effective nano-calcium carbonate of power cable cover and mix the modified flame-retardant polypropylene PP Pipe Compound, the double screw extruder barrel temperature is controlled at 200 ℃, and screw speed is controlled at 800 rev/mins.Pellet is added in the single screw extrusion machine, fusion plastification in extruder, the typing of through port mould, cool off, cut, promptly make the protecting pipe that the present invention relates to, the barrel temperature of single screw extrusion machine is controlled at 200 ℃, screw speed is controlled at 40 rev/mins, and die temperature is controlled at 175 ℃.160 millimeters of the protecting pipe external diameters that present embodiment obtains, 5 millimeters of wall thickness, performance reaches the typical performance requirement of protecting pipe among the present invention.
Polypropylene 100
EPR?????6
Fire retardant 15
Nano-calcium carbonate 4
Compound inorganic stuffing 10
Erucamid erucyl amide 0.5
Molybdate red 1.0
More than be benchmark with polyacrylic weight.
Compound inorganic stuffing is the mixture of imvite, aluminium hydroxide, and the two proportioning is 1: 1.
Embodiment 4
By following proportion ingredient will fill a prescription in material in high-speed mixer, mixed 10 minutes, then compound extruding pelletization in double screw extruder is made the effective nano-calcium carbonate of power cable cover and mix the modified flame-retardant polypropylene PP Pipe Compound, the double screw extruder barrel temperature is controlled at 200 ℃, and screw speed is controlled at 1000 rev/mins.Pellet is added in the single screw extrusion machine, fusion plastification in extruder, the typing of through port mould, cool off, cut, promptly make the protecting pipe that the present invention relates to, the barrel temperature of single screw extrusion machine is controlled at 185 ℃, screw speed is controlled at 80 rev/mins, and die temperature is controlled at 185 ℃.225 millimeters of the protecting pipe external diameters that present embodiment obtains, 9.5 millimeters of wall thickness, performance reaches the typical performance requirement of protecting pipe among the present invention.
Polypropylene 100
SEBS????10
Fire retardant 20
Nano-calcium carbonate 8
Compound inorganic stuffing 15
Erucamid erucyl amide 0.5
Carbon black 1.0
Compound inorganic stuffing is the mixture of imvite and aluminium hydroxide, and the two proportioning is 1: 1,
Wherein polypropylene is a HOPP, and polyacrylic melt flow rate (MFR) MFR≤3 restrain/10 minutes, the D of Nano particles of calcium carbonate
90≤ 100 nanometers.
Embodiment 5
By following proportion ingredient will fill a prescription in material in high-speed mixer, mixed 8 minutes, then compound extruding pelletization in double screw extruder is made the effective nano-calcium carbonate of power cable cover and mix the modified flame-retardant polypropylene PP Pipe Compound, the double screw extruder barrel temperature is controlled at 220 ℃, and screw speed is controlled at 1200 rev/mins.Pellet is added in the single screw extrusion machine, fusion plastification in extruder, the typing of through port mould, cool off, cut, promptly make the protecting pipe that the present invention relates to, the barrel temperature of single screw extrusion machine is controlled at 180 ℃, screw speed is controlled at 80 rev/mins, and die temperature is controlled at 185 ℃.Present embodiment obtains 90 millimeters of protecting pipe external diameters, 4 millimeters of wall thickness, and performance reaches the typical performance requirement of protecting pipe among the present invention.
Polypropylene 100
SEBS????8
EPR?????2
Fire retardant 40
Nano-calcium carbonate 8
Compound inorganic stuffing 15
Erucamid erucyl amide 1
Molybdate red 0.1
Compound inorganic stuffing is the mixture of imvite, aluminium hydroxide, magnesium hydroxide, and three's proportioning is 1: 1: 1.
Wherein polypropylene is a HOPP, and polyacrylic melt flow rate (MFR) MFR≤3 restrain/10 minutes, the D of Nano particles of calcium carbonate
90≤ 100 nanometers.
Embodiment 6
By following proportion ingredient will fill a prescription in material in high-speed mixer, mixed 10 minutes, then compound extruding pelletization in double screw extruder is made the effective nano-calcium carbonate of power cable cover and mix the modified flame-retardant polypropylene PP Pipe Compound, the double screw extruder barrel temperature is controlled at 200 ℃, and screw speed is controlled at 1000 rev/mins.Pellet is added in the single screw extrusion machine, fusion plastification in extruder, the typing of through port mould, cool off, cut, promptly make the protecting pipe that the present invention relates to, the barrel temperature of single screw extrusion machine is controlled at 200 ℃, screw speed is controlled at 40 rev/mins, and die temperature is controlled at 175 ℃.125 millimeters of the protecting pipe external diameters that present embodiment obtains, 5 millimeters of wall thickness, performance reaches the typical performance requirement of protecting pipe among the present invention.
Polypropylene 100
SEBS????10
Fire retardant 20
Nano-calcium carbonate 8
Compound inorganic stuffing 15
Erucamid erucyl amide 0.1
Molybdate red 2.0
Compound inorganic stuffing is the mixture of imvite and aluminium hydroxide, and the two proportioning is 1: 1,
Wherein polypropylene is a HOPP, and polyacrylic melt flow rate (MFR) MFR≤3 restrain/10 minutes, the D of Nano particles of calcium carbonate
90≤ 100 nanometers.
Claims (6)
1, a kind of buried mesohigh power cable sleeve pipe is characterized in that this sleeve pipe adopts the nano modification polypropylene dedicated material, and it has following component:
Polypropylene 100
Elastomer 6-12
Fire retardant 15-40
Nano-calcium carbonate 4-10
Compound inorganic stuffing 10-20
Erucamid erucyl amide 0.1-1
Pigment 0.1-2
More than be benchmark with polyacrylic weight.
2,, it is characterized in that described elastomer is at least a among ethylene propylene monomer EPR, ethylene propylene diene rubber EPDM, s-B-S synthetic rubber SBS, styrene-ethylene-butadiene-styrene synthetic rubber SEBS, octene-ethylene elastomer POE, the ethene-vinyl acetate elastomer EVA according to the described buried mesohigh power cable sleeve pipe of claim 1.
3,, it is characterized in that the D of nano-calcium carbonate according to the described buried mesohigh power cable sleeve pipe of claim 1
90≤ 100 nanometers.
4,, it is characterized in that compound inorganic stuffing is at least two kinds of compounds of calcium carbonate superfine powder, imvite, mica, wollastonite, talcum powder, barium sulfate, aluminium hydroxide, magnesium hydroxide according to the described buried mesohigh power cable sleeve pipe of claim 1.
5,, it is characterized in that at least a in the preferred HOPP of polypropylene, the COPP, polyacrylic melt flow rate (MFR) MFR≤3 grams/10 minutes according to the described buried mesohigh power cable sleeve pipe of claim 1.
6, a kind of production buried mesohigh power cable sleeve pipe method as claimed in claim 1, it is characterized in that according to the described proportion ingredient of claim 1, material mixed in high-speed mixer 8-12 minute, then with compound extruding pelletization in double screw extruder, make the effective nano-calcium carbonate of cable cover(ing) and mixed the modified flame-retardant polypropylene PP Pipe Compound, wherein the double screw extruder barrel temperature is controlled at 180 ℃～220 ℃, screw speed is controlled at 400～1200 rev/mins, then the fusing of PP Pipe Compound single screw extrusion machine is extruded, the through port mold forming, cooling and shaping obtains the power cable sleeve pipe, the barrel temperature of its single screw extrusion machine is controlled at 175 ℃～200 ℃, screw speed is controlled at 40～120 rev/mins, and die temperature is controlled at 175 ℃～190 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021485658A CN1316704C (en) | 2002-12-16 | 2002-12-16 | Bushing tube for buried medium-high voltage power cable and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021485658A CN1316704C (en) | 2002-12-16 | 2002-12-16 | Bushing tube for buried medium-high voltage power cable and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1508925A true CN1508925A (en) | 2004-06-30 |
| CN1316704C CN1316704C (en) | 2007-05-16 |
Family
ID=34233208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021485658A Expired - Fee Related CN1316704C (en) | 2002-12-16 | 2002-12-16 | Bushing tube for buried medium-high voltage power cable and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1316704C (en) |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100495843C (en) * | 2007-06-19 | 2009-06-03 | 周云全 | Buried cable carbon-screw protective tube produced by utilizing waste plastic-steel |
| CN101114764B (en) * | 2006-07-27 | 2010-09-15 | 上海介通管业有限公司 | Modified polypropylene cable protection tube for non-digging direct-buried mode |
| CN102617931A (en) * | 2012-04-01 | 2012-08-01 | 广东三凌塑料管材有限公司 | Modified polypropylene cable guide |
| CN103128945A (en) * | 2013-03-19 | 2013-06-05 | 佛山顾地塑胶有限公司 | Preparation method of heat-resistant PVC (polyvinyl chloride) casing pipe for buried high-voltage power cable |
| WO2013149369A1 (en) * | 2012-04-01 | 2013-10-10 | Wu Xiyan | Polyethylene electrical cable conduit |
| CN103878966A (en) * | 2014-03-13 | 2014-06-25 | 苏州科茂电子材料科技有限公司 | Preparation method of insulation body in radio-frequency coaxial cable |
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| CN2259017Y (en) * | 1996-08-23 | 1997-08-06 | 福建省龙岩环星无线电厂 | Electrode imbedded high-voltage bushing |
| CN1205938A (en) * | 1998-05-20 | 1999-01-27 | 开封市新龙塑钢管厂 | Production process of polypropylene pipe for water supply |
| JP3261108B2 (en) * | 1999-02-03 | 2002-02-25 | 三菱電線工業株式会社 | Bushing for cable termination |
| CN1175038C (en) * | 2001-07-03 | 2004-11-10 | 成都市华硕实业有限公司 | Composite of microfibre, superfine powder and polypropylene |
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2002
- 2002-12-16 CN CNB021485658A patent/CN1316704C/en not_active Expired - Fee Related
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