CN108752750A - A kind of formula and preparation method thereof of environment-friendly type thermostable power cable protecting pipe - Google Patents
A kind of formula and preparation method thereof of environment-friendly type thermostable power cable protecting pipe Download PDFInfo
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- CN108752750A CN108752750A CN201810790850.4A CN201810790850A CN108752750A CN 108752750 A CN108752750 A CN 108752750A CN 201810790850 A CN201810790850 A CN 201810790850A CN 108752750 A CN108752750 A CN 108752750A
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C08K2003/2224—Magnesium hydroxide
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08L2203/00—Applications
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- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C08L2205/00—Polymer mixtures characterised by other features
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The present invention relates to electric power cable fields, and in particular to a kind of formula and preparation method thereof of environment-friendly type thermostable power cable protecting pipe, formula includes following parts by weight of component：80 parts of polypropylene；10-20 parts of regenerating polypropylene；2-5 parts of nano magnesia；5-15 parts of ethylene-octene copolymer；5-8 parts of aerosil；3-5 parts of polypropylene grafted maleic anhydride；10-20 parts of filler；5-10 parts of fire retardant；3-8 parts of antioxidant.It is environmentally protective, economize on resources and cost by recycling regenerating polypropylene.It selects ethylene-octene copolymer to improve the more crisp problem of regenerating polypropylene, plays the role of coordination plasticizing.Secondly, the addition of nano magnesia improves the problem of material Space-charge accumulation, improves the integral insulation and breakdown characteristics of power cable protecting pipe.Nano magnesia improves the heat resistance of material, makes it have higher heat distortion temperature.Aerosil improves the tensile strength, impact flexibility and resistance to compression bending strength of material.
Description
Technical field
The present invention relates to electric power cable fields, more specifically, it relates to which a kind of environment-friendly type thermostable power cable is protected
Formula of pipe and preparation method thereof.
Background technology
Polypropylene（PP）As a kind of thermoplastic resin of excellent combination property, there are raw material sources to enrich, mechanical property
It is good, density is small, good chemical stability, using very extensive in plastics and fiber industry, but since PP strands are soft
Property it is big, melt extrusion elasticity is big, this limits the application of PP to a certain extent.In order to improve polyacrylic processing performance, expand
Its big application range, has done many researchs to MODIFIED PP both at home and abroad.Electric power protection pipe is the critical elements in power domain, modified
Polypropylene prepare electric power protection pipe anti-flammability, electrical insulating property, antiacid caustic corrosion, sliding, thermal stability etc. also
Shortcomings, therefore by the comprehensive performance of filling-modified or blending and modifying raising polypropylene electric power protection pipe, obtain corrosion resistant
Corrosion is strong, electric insulating quality is good, high mechanical strength, friction coefficient is small, fire-retardant, suppression cigarette, heat-resisting, cold-resistant, service life is long, construction
Convenient, the superior electric power protection pipe of the ratio of performance to price is the hot issue studied at present.
After polypropylene pipe due to being used for power cable protection in the prior art has damage, it can not be continuing with, directly
Discarded waste of resource, welding are connect, environmentally protective sustainable development requirement is not met, how to recycle waste and old polypropylene
Tubing, and it is modified, it is urgent problem to obtain high-quality MPP tubing.
Invention content
The purpose of the present invention is to provide a kind of formula and preparation method thereof of environment-friendly type thermostable power cable protecting pipe,
It has the advantages that waste and old polypropylene tubing recycling.
The present invention above-mentioned technical purpose technical scheme is that：A kind of environment-friendly type thermostable electric power
The formula of cable protection pipe, including following parts by weight of component：
80 parts of polypropylene
20 parts of regenerating polypropylene 10-
2-5 parts of nano magnesia
5-15 parts of ethylene-octene copolymer
5-8 parts of aerosil
3-5 parts of polypropylene grafted maleic anhydride
10-20 parts of filler
5-10 parts of fire retardant
3-8 parts of antioxidant.
It is environmentally protective, economize on resources and cost by recycling regenerating polypropylene by using above-mentioned technical proposal.
It selects ethylene-octene copolymer as modifying agent, the more crisp problem of regenerating polypropylene can be improved, and improve that polypropylene is highly crystalline to lead
The problem of the low-temperature impact toughness difference of cause, plays the role of coordination plasticizing.Secondly, it is hollow to improve material for the addition of nano magnesia
Between charge accumulated the problem of, inhibit and reduce polyacrylic space charge density, improve the integral insulation of power cable protecting pipe
Property and breakdown characteristics, the present invention in power cable protecting pipe for 110,000 volts or more power equipment use.It is nano oxidized
Magnesium also can induce the generation of β crystalline substances in polypropylene thermal deformation process, since melting recrystallization can occur in temperature-rise period for β crystalline substances,
And it is changed into the higher α phases of fusing point at a higher temperature, therefore the heat resistance of material is improved, make it have higher heat
Deformation temperature.Aerosil is the ultra tiny New Inorganic Materials of high-tech, can enter the inside in polypropylene crack and gap,
Filamentous connection structure is formed with polypropylene chains so that protection pipe needs the stress of bigger or the outside energy of consumption bigger just may be used
Fracture, improves the tensile strength, impact flexibility and resistance to compression bending strength of material；In addition aerosil is high temperature resistant inorganic
The heat resistance of protection pipe can be improved in material.Polypropylene grafted maleic anhydride is used as compatilizer so that each component is fully mixed
It closes, obtained finished-product material performance stable homogeneous not will produce layering and performance wild effect.Filler is dispersed in each component
In, properties of product are not only improved, production cost has been greatly reduced.Fire retardant can prevent or delay Plastics Combustion.Antioxygen
Agent can delay or inhibit the oxidative degradation of plastics.
Further, further include 2-5 parts of polyethersulfone resins.
By using above-mentioned technical proposal, polyethersulfone resin is a kind of unformed resin of clear amber in color, to drastically
Temperature change shows excellent reliability, and has excellent reliability in high temperature long-time service, to which polyethersulfone resin can be improved
The high temperature resistance of product can cope with the localized hyperthermia that cable is generated in operation or overload；In addition polyethersulfone resin has certainly
The property put out, not adding any fire retardant i.e. has excellent flame retardancy, and the flame retardant property of product can be improved.
Further, further include 8-13 parts of polyether ester fiber.
By using above-mentioned technical proposal, polyether ester fiber is spinned by polyester elastomer, polyester elastomer with
The polyester segment that crystallinity is high, fusing point is high is copolymerized as hard section by soft segment of the lower unformed polyethers of glass transition temperature
Made of block copolymer, hard section region provides the physical crosslinking of thermal reversion for soft segment region, imparts good thermoplasticity,
It is connected with chemical bond between soft and hard segments, with preferable elastic recovery rate and elastic stability, to which product has preferably
Toughness and elasticity, may conform to need in the trenchless engineerings such as horizontal directional drilling tubing and pad bear larger drawing force and
The needs of bending force.
Further, further include 5-8 parts of expansible graphites.
By using above-mentioned technical proposal, expansible graphite is a kind of very loose porous mass, when being heated, compares table
Area increased dramatically, and can adsorb more gases and fluid molecule.
Further, the fire retardant include in antimony oxide, magnesium hydroxide or aluminium hydroxide one or two kind with
On mixing.
By using above-mentioned technical proposal, antimony oxide, magnesium hydroxide and aluminium hydroxide are inorganic combustion inhibitor, in addition to
Have outside flame retardant effect, also has the function of that smoke and hydrogen chloride is inhibited to generate.
Further, the filler is talcum powder and brucite powder.
By using above-mentioned technical proposal, the rigidity, heat resistance, dimensional stability of protection pipe can be improved in talcum powder, simultaneously
Reduce cost；Brucite powder has reached filling, fire-retardant and smoke elimination triple effects as fire retardant.
Further, the ratio of the talcum powder and brucite powder is 2:1.
By using above-mentioned technical proposal, the ratio of talcum powder and water magnesium powder is 2:Effect is good and at low cost when 1.
Further, the antioxidant is one or two in phosphorous acid antioxidant, thioesters antioxidant or phenolic antioxidant
Kind or more mixing.
By using above-mentioned technical proposal, the antioxygenic property of product can be improved in these three antioxidant, prevents its oxidation.
Further, a kind of preparation method of environment-friendly type thermostable power cable protecting pipe, includes the following steps：
S1, by polypropylene, regenerating polypropylene, nano magnesia, ethylene-octene copolymer particle, be put into vacuum drying oven,
10-15 minutes dry under 50-60 DEG C of temperature condition, with being transferred to, heating stirring in mixing machine is uniform, and polypropylene is added and connects
Branch maleic anhydride, polyether ester fiber, aerosil, expansible graphite, filler, fire retardant and antioxidant, continue to heat
Stirring stops stirring, is cooled to 20-45 DEG C and next procedure is sent to be blended to 85-115 DEG C, insulated and stirred 1-2min；
S2, above-mentioned blend composition is passed through into single screw rod or double screw extruder extruding pelletization, one area's temperature of extruder barrel is
160-190 DEG C, two area's temperature are 170-210 DEG C, and three area's temperature are 180-225 DEG C, and four area's temperature are 185-235 DEG C, mold temperature
Degree is 200-260 DEG C, and extruder screw rotating speed is 1-30 revs/min；
S3, above-mentioned granulation material is passed through into twin-screw or single screw extrusion machine and mold extrusion molding, one area's temperature of extruder barrel
Degree is 160-190 DEG C, and two area's temperature are 170-210 DEG C, and three area's temperature are 180-225 DEG C, and four area's temperature are 185-235 DEG C；Mould
It is 180-225 DEG C to have area's temperature, and two area's temperature are 185-230 DEG C, and three area's temperature are 190-240 DEG C, die temperature 190-
260℃；Extruder screw rotating speed is 5-30 revs/min, and hauling speed is 0.5-10 ms/min, and water tank vacuum degree is 0.02-
0.06PMa obtains finished product tubing.
It is by blending that each component is evenly dispersed by using above-mentioned technical proposal, it is sufficiently mixed, by being granulated and squeezing out
Molding, obtains finished product tubing.
Further, the regenerating polypropylene in S1 need to use after anticipating, and steps are as follows：By the poly- of various recycling
Propylene material presses color classification, and with the broken flushing of water pigment, spare with the remaining water of dryer drying after flushing.
Subsequent processing is facilitated to make by collecting waste and old polypropylene color classification by using above-mentioned technical proposal
With, raising product quality, and pass through preliminary crushing, flushing and drying, obtain the regenerating polypropylene for directly processing.
In conclusion the invention has the advantages that：
It is environmentally protective, economize on resources and cost 1. by recycling regenerating polypropylene, select ethylene-octene copolymer conduct
Modifying agent can improve the more crisp problem of regenerating polypropylene, and improve asking for the highly crystalline caused low-temperature impact toughness difference of polypropylene
Topic, plays the role of coordination plasticizing；
2. by the way that the problem of nano magnesia improves the accumulation of material Space-charge is added, inhibit and reduce polyacrylic space electricity
Lotus density, improves the integral insulation and breakdown characteristics of power cable protecting pipe, and improves the heat resistance of material, makes it have
Higher heat distortion temperature；
3. by the way that ultra tiny New Inorganic Materials aerosil is added, the inside in polypropylene crack and gap can be entered, with
Polypropylene chains form Filamentous connection structure so that protection pipe needs the stress of bigger or the outside energy of consumption bigger that can just break
It splits, improves the tensile strength, impact flexibility and resistance to compression bending strength of material；In addition aerosil is high temperature resistant inorganic material
Material, can be improved the heat resistance of protection pipe.
Specific implementation mode
Embodiment 1：
80 parts of polypropylene
10 parts of regenerating polypropylene
1 part of nano magnesia
5 parts of ethylene-octene copolymer
5 parts of aerosil
3 parts of polypropylene grafted maleic anhydride
2 parts of polyethersulfone resin
8 parts of polyether ester fiber
5 parts of expansible graphite
10 parts of filler
5 parts of fire retardant
3 parts of antioxidant
Wherein, fire retardant selects antimony oxide, magnesium hydroxide and aluminium hydroxide, and the ratio of three is 1:1:1；Filler selects
With talcum powder and brucite powder, and the ratio of the two is 2:1；Antioxidant is that phosphorous acid antioxidant, thioesters antioxidant and phenols are anti-
The ratio of oxygen agent, three is 1:1:1.
Preparation method is as follows：
S1, the polypropylene material of various recycling is pressed into color classification, dried with dryer and with the broken flushing of water pigment, after flushing more than
Water, it is spare as regenerating polypropylene；
It by polypropylene, regenerating polypropylene, nano magnesia, ethylene-octene copolymer particle, is put into vacuum drying oven, at 50 DEG C
Temperature condition under dry 10 minutes, with being transferred to, heating stirring in mixing machine is uniform, and be added polypropylene grafted maleic anhydride,
Polyether ester fiber, aerosil, expansible graphite, filler, fire retardant and antioxidant, continue heating stirring to 85 DEG C,
Insulated and stirred 1min stops stirring, is cooled to 20 DEG C and next procedure is sent to be blended；
S2, above-mentioned blend composition is passed through to single screw rod or double screw extruder extruding pelletization, one area's temperature of extruder barrel is 160
DEG C, two area's temperature are 170 DEG C, and three area's temperature are 180 DEG C, and four area's temperature are 185 DEG C, and mold temperature is 200 DEG C, extruder screw
Rotating speed is 1 rev/min；
S3, above-mentioned granulation material is passed through into twin-screw or single screw extrusion machine and mold extrusion molding, one area's temperature of extruder barrel
Degree is 160 DEG C, and two area's temperature are 170 DEG C, and three area's temperature are 180 DEG C, and four area's temperature are 185 DEG C；One area's temperature of mold is 180
DEG C, two area's temperature are 185 DEG C, and three area's temperature are 190 DEG C, and die temperature is 190 DEG C；Extruder screw rotating speed is 5 revs/min,
Hauling speed is 0.5 m/min, and water tank vacuum degree is 0.02PMa, obtains finished product tubing.
Embodiment 2：
80 parts of polypropylene
10 parts of regenerating polypropylene
2 parts of nano magnesia
6 parts of ethylene-octene copolymer
5 parts of aerosil
3 parts of polypropylene grafted maleic anhydride
2 parts of polyethersulfone resin
8 parts of polyether ester fiber
5 parts of expansible graphite
10 parts of filler
5 parts of fire retardant
3 parts of antioxidant
Wherein, fire retardant selects antimony oxide, magnesium hydroxide and aluminium hydroxide, and the ratio of three is 1:1:1；Filler selects
With talcum powder and brucite powder, and the ratio of the two is 2:1；Antioxidant is that phosphorous acid antioxidant, thioesters antioxidant and phenols are anti-
The ratio of oxygen agent, three is 1:1:1.
Preparation method is as follows：
S1, the polypropylene material of various recycling is pressed into color classification, dried with dryer and with the broken flushing of water pigment, after flushing more than
Water, it is spare as regenerating polypropylene；
It by polypropylene, regenerating polypropylene, nano magnesia, ethylene-octene copolymer particle, is put into vacuum drying oven, at 50 DEG C
Temperature condition under dry 10 minutes, with being transferred to, heating stirring in mixing machine is uniform, and be added polypropylene grafted maleic anhydride,
Polyether ester fiber, aerosil, expansible graphite, filler, fire retardant and antioxidant, continue heating stirring to 85 DEG C,
Insulated and stirred 1min stops stirring, is cooled to 20 DEG C and next procedure is sent to be blended；
S2, above-mentioned blend composition is passed through to single screw rod or double screw extruder extruding pelletization, one area's temperature of extruder barrel is 160
DEG C, two area's temperature are 170 DEG C, and three area's temperature are 180 DEG C, and four area's temperature are 185 DEG C, and mold temperature is 200 DEG C, extruder screw
Rotating speed is 1 rev/min；
S3, above-mentioned granulation material is passed through into twin-screw or single screw extrusion machine and mold extrusion molding, one area's temperature of extruder barrel
Degree is 160 DEG C, and two area's temperature are 170 DEG C, and three area's temperature are 180 DEG C, and four area's temperature are 185 DEG C；One area's temperature of mold is 180
DEG C, two area's temperature are 185 DEG C, and three area's temperature are 190 DEG C, and die temperature is 190 DEG C；Extruder screw rotating speed is 5 revs/min,
Hauling speed is 0.5 m/min, and water tank vacuum degree is 0.02PMa, obtains finished product tubing.
Embodiment 3：
80 parts of polypropylene
20 parts of regenerating polypropylene
3 parts of nano magnesia
9 parts of ethylene-octene copolymer
8 parts of aerosil
5 parts of polypropylene grafted maleic anhydride
5 parts of polyethersulfone resin
13 parts of polyether ester fiber
8 parts of expansible graphite
20 parts of filler
10 parts of fire retardant
8 parts of antioxidant
Wherein, fire retardant selects antimony oxide, magnesium hydroxide and aluminium hydroxide, and the ratio of three is 1:1:1；Filler selects
With talcum powder and brucite powder, and the ratio of the two is 2:1；Antioxidant is that phosphorous acid antioxidant, thioesters antioxidant and phenols are anti-
The ratio of oxygen agent, three is 1:1:1.
Preparation method is as follows：
S1, the polypropylene material of various recycling is pressed into color classification, dried with dryer and with the broken flushing of water pigment, after flushing more than
Water, it is spare as regenerating polypropylene；
It by polypropylene, regenerating polypropylene, nano magnesia, ethylene-octene copolymer particle, is put into vacuum drying oven, at 60 DEG C
Temperature condition under dry 15 minutes, with being transferred to, heating stirring in mixing machine is uniform, and be added polypropylene grafted maleic anhydride,
Polyether ester fiber, aerosil, expansible graphite, filler, fire retardant and antioxidant, continue heating stirring to 115 DEG C,
Insulated and stirred 2min stops stirring, is cooled to 45 DEG C and next procedure is sent to be blended；
S2, above-mentioned blend composition is passed through to single screw rod or double screw extruder extruding pelletization, one area's temperature of extruder barrel is 190
DEG C, two area's temperature are 210 DEG C, and three area's temperature are 225 DEG C, and four area's temperature are 235 DEG C, and mold temperature is 260 DEG C, extruder screw
Rotating speed is 30 revs/min；
S3, above-mentioned granulation material is passed through into twin-screw or single screw extrusion machine and mold extrusion molding, one area's temperature of extruder barrel
Degree is 190 DEG C, and two area's temperature are 210 DEG C, and three area's temperature are 225 DEG C, and four area's temperature are 235 DEG C；One area's temperature of mold is 225
DEG C, two area's temperature are 230 DEG C, and three area's temperature are 240 DEG C, and die temperature is 260 DEG C；Extruder screw rotating speed is 30 revs/min,
Hauling speed is 10 ms/min, and water tank vacuum degree is 0.06PMa, obtains finished product tubing.
Embodiment 4：
80 parts of polypropylene
20 parts of regenerating polypropylene
4 parts of nano magnesia
12 parts of ethylene-octene copolymer
8 parts of aerosil
5 parts of polypropylene grafted maleic anhydride
5 parts of polyethersulfone resin
13 parts of polyether ester fiber
8 parts of expansible graphite
20 parts of filler
10 parts of fire retardant
8 parts of antioxidant
Wherein, fire retardant selects antimony oxide, magnesium hydroxide and aluminium hydroxide, and the ratio of three is 1:1:1；Filler selects
With talcum powder and brucite powder, and the ratio of the two is 2:1；Antioxidant is that phosphorous acid antioxidant, thioesters antioxidant and phenols are anti-
The ratio of oxygen agent, three is 1:1:1.
Preparation method is as follows：
S1, the polypropylene material of various recycling is pressed into color classification, dried with dryer and with the broken flushing of water pigment, after flushing more than
Water, it is spare as regenerating polypropylene；
It by polypropylene, regenerating polypropylene, nano magnesia, ethylene-octene copolymer particle, is put into vacuum drying oven, at 60 DEG C
Temperature condition under dry 15 minutes, with being transferred to, heating stirring in mixing machine is uniform, and be added polypropylene grafted maleic anhydride,
Polyether ester fiber, aerosil, expansible graphite, filler, fire retardant and antioxidant, continue heating stirring to 115 DEG C,
Insulated and stirred 2min stops stirring, is cooled to 45 DEG C and next procedure is sent to be blended；
S2, above-mentioned blend composition is passed through to single screw rod or double screw extruder extruding pelletization, one area's temperature of extruder barrel is 190
DEG C, two area's temperature are 210 DEG C, and three area's temperature are 225 DEG C, and four area's temperature are 235 DEG C, and mold temperature is 260 DEG C, extruder screw
Rotating speed is 30 revs/min；
S3, above-mentioned granulation material is passed through into twin-screw or single screw extrusion machine and mold extrusion molding, one area's temperature of extruder barrel
Degree is 190 DEG C, and two area's temperature are 210 DEG C, and three area's temperature are 225 DEG C, and four area's temperature are 235 DEG C；One area's temperature of mold is 225
DEG C, two area's temperature are 230 DEG C, and three area's temperature are 240 DEG C, and die temperature is 260 DEG C；Extruder screw rotating speed is 30 revs/min,
Hauling speed is 10 ms/min, and water tank vacuum degree is 0.06PMa, obtains finished product tubing.
Embodiment 5：
80 parts of polypropylene
20 parts of regenerating polypropylene
5 parts of nano magnesia
15 parts of ethylene-octene copolymer
8 parts of aerosil
5 parts of polypropylene grafted maleic anhydride
5 parts of polyethersulfone resin
13 parts of polyether ester fiber
8 parts of expansible graphite
20 parts of filler
10 parts of fire retardant
8 parts of antioxidant
Wherein, fire retardant selects antimony oxide, magnesium hydroxide and aluminium hydroxide, and the ratio of three is 1:1:1；Filler selects
With talcum powder and brucite powder, and the ratio of the two is 2:1；Antioxidant is that phosphorous acid antioxidant, thioesters antioxidant and phenols are anti-
The ratio of oxygen agent, three is 1:1:1.
Preparation method is as follows：
S1, the polypropylene material of various recycling is pressed into color classification, dried with dryer and with the broken flushing of water pigment, after flushing more than
Water, it is spare as regenerating polypropylene；
It by polypropylene, regenerating polypropylene, nano magnesia, ethylene-octene copolymer particle, is put into vacuum drying oven, at 60 DEG C
Temperature condition under dry 15 minutes, with being transferred to, heating stirring in mixing machine is uniform, and be added polypropylene grafted maleic anhydride,
Polyether ester fiber, aerosil, expansible graphite, filler, fire retardant and antioxidant, continue heating stirring to 115 DEG C,
Insulated and stirred 2min stops stirring, is cooled to 45 DEG C and next procedure is sent to be blended；
S2, above-mentioned blend composition is passed through to single screw rod or double screw extruder extruding pelletization, one area's temperature of extruder barrel is 190
DEG C, two area's temperature are 210 DEG C, and three area's temperature are 225 DEG C, and four area's temperature are 235 DEG C, and mold temperature is 260 DEG C, extruder screw
Rotating speed is 15 revs/min；
S3, above-mentioned granulation material is passed through into twin-screw or single screw extrusion machine and mold extrusion molding, one area's temperature of extruder barrel
Degree is 190 DEG C, and two area's temperature are 210 DEG C, and three area's temperature are 225 DEG C, and four area's temperature are 235 DEG C；One area's temperature of mold is 225
DEG C, two area's temperature are 230 DEG C, and three area's temperature are 240 DEG C, and die temperature is 260 DEG C；Extruder screw rotating speed is 15 revs/min,
Hauling speed is 5 ms/min, and water tank vacuum degree is 0.06PMa, obtains finished product tubing.
Embodiment 6：
80 parts of polypropylene
20 parts of regenerating polypropylene
0 part of nano magnesia
9 parts of ethylene-octene copolymer
8 parts of aerosil
5 parts of polypropylene grafted maleic anhydride
5 parts of polyethersulfone resin
13 parts of polyether ester fiber
8 parts of expansible graphite
20 parts of filler
10 parts of fire retardant
8 parts of antioxidant
Wherein, fire retardant selects antimony oxide, magnesium hydroxide and aluminium hydroxide, and the ratio of three is 1:1:1；Filler selects
With talcum powder and brucite powder, and the ratio of the two is 2:1；Antioxidant is that phosphorous acid antioxidant, thioesters antioxidant and phenols are anti-
The ratio of oxygen agent, three is 1:1:1.
Preparation method is as follows：
S1, the polypropylene material of various recycling is pressed into color classification, dried with dryer and with the broken flushing of water pigment, after flushing more than
Water, it is spare as regenerating polypropylene；
It by polypropylene, regenerating polypropylene, ethylene-octene copolymer particle, is put into vacuum drying oven, under 60 DEG C of temperature condition
Dry 15 minutes, with being transferred to, heating stirring in mixing machine was uniform, and be added polypropylene grafted maleic anhydride, polyether ester fiber,
Aerosil, expansible graphite, filler, fire retardant and antioxidant, continue heating stirring to 115 DEG C, insulated and stirred
2min stops stirring, is cooled to 45 DEG C and next procedure is sent to be blended；
S2, above-mentioned blend composition is passed through to single screw rod or double screw extruder extruding pelletization, one area's temperature of extruder barrel is 190
DEG C, two area's temperature are 210 DEG C, and three area's temperature are 225 DEG C, and four area's temperature are 235 DEG C, and mold temperature is 260 DEG C, extruder screw
Rotating speed is 30 revs/min；
S3, above-mentioned granulation material is passed through into twin-screw or single screw extrusion machine and mold extrusion molding, one area's temperature of extruder barrel
Degree is 190 DEG C, and two area's temperature are 210 DEG C, and three area's temperature are 225 DEG C, and four area's temperature are 235 DEG C；One area's temperature of mold is 225
DEG C, two area's temperature are 230 DEG C, and three area's temperature are 240 DEG C, and die temperature is 260 DEG C；Extruder screw rotating speed is 30 revs/min,
Hauling speed is 10 ms/min, and water tank vacuum degree is 0.06PMa, obtains finished product tubing.
As a result with detection：According to GB/T 1633-2000, GB/T1033-1986 and GB/T1040-1992 examination criterias pair
The sample of embodiment 1-6 is detected, as a result such as following table：
| Project | Density g/cm3 | Dimension card is heat-resisting（1kg, 50 DEG C/h）℃ | Drop impact（- 5 DEG C/8h is stored） | Tensile strength Mpa |
| Performance indicator | 0.93~0.98 | Not less than 120 | It does not rupture | Not less than 25 |
| Embodiment 1 | 0.93 | 150 | It does not rupture | 26.1 |
| Embodiment 2 | 0.94 | 152 | It does not rupture | 26.2 |
| Embodiment 3 | 0.96 | 154 | It does not rupture | 26.4 |
| Embodiment 4 | 0.97 | 156 | It does not rupture | 26.7 |
| Embodiment 5 | 0.97 | 155 | It does not rupture | 26.5 |
| Embodiment 6 | 0.94 | 147 | It does not rupture | 26.3 |
As seen from the above table, the requirements for the power cable protecting pipe being prepared by inventive formulation and method meet and excellent
In standard, there is good high temperature resistant, the performance of low temperature resistant, resistance to compression and stretch-proof, the power equipment for 110,000 volts or more to make
With.Wherein, the best results of embodiment 5.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of formula of environment-friendly type thermostable power cable protecting pipe, it is characterised in that：Including following parts by weight of component：
80 parts of polypropylene
20 parts of regenerating polypropylene 10-
1-5 parts of nano magnesia
5-15 parts of ethylene-octene copolymer
5-8 parts of aerosil
3-5 parts of polypropylene grafted maleic anhydride
10-20 parts of filler
5-10 parts of fire retardant
3-8 parts of antioxidant.
2. a kind of formula of environment-friendly type thermostable power cable protecting pipe according to claim 1, it is characterised in that：Also wrap
Include 2-5 parts of polyethersulfone resins.
3. a kind of formula of environment-friendly type thermostable power cable protecting pipe according to claim 2, it is characterised in that：Also wrap
Include 8-13 parts of polyether ester fiber.
4. a kind of formula of environment-friendly type thermostable power cable protecting pipe according to claim 3, it is characterised in that：Also wrap
Include 5-8 parts of expansible graphites.
5. a kind of formula of environment-friendly type thermostable power cable protecting pipe according to claim 4, it is characterised in that：It is described
Fire retardant includes one or two or more mixing in antimony oxide, magnesium hydroxide or aluminium hydroxide.
6. a kind of formula of environment-friendly type thermostable power cable protecting pipe according to claim 5, it is characterised in that：It is described
Filler is talcum powder and brucite powder.
7. a kind of formula of environment-friendly type thermostable power cable protecting pipe according to claim 6, it is characterised in that：It is described
The ratio of talcum powder and brucite powder is 2:1.
8. a kind of formula of environment-friendly type thermostable power cable protecting pipe according to claim 7, it is characterised in that：It is described
Antioxidant is one or two or more mixing in phosphorous acid antioxidant, thioesters antioxidant or phenolic antioxidant.
9. a kind of preparation method of environment-friendly type thermostable power cable protecting pipe, it is characterised in that：Include the following steps：
S1, by polypropylene, regenerating polypropylene, nano magnesia, ethylene-octene copolymer particle, be put into vacuum drying oven,
10-15 minutes dry under 50-60 DEG C of temperature condition, with being transferred to, heating stirring in mixing machine is uniform, and polypropylene is added and connects
Branch maleic anhydride, polyether ester fiber, aerosil, expansible graphite, filler, fire retardant and antioxidant, continue to heat
Stirring stops stirring, is cooled to 20-45 DEG C and next procedure is sent to be blended to 85-115 DEG C, insulated and stirred 1-2min；
S2, above-mentioned blend composition is passed through into single screw rod or double screw extruder extruding pelletization, one area's temperature of extruder barrel is
160-190 DEG C, two area's temperature are 170-210 DEG C, and three area's temperature are 180-225 DEG C, and four area's temperature are 185-235 DEG C, mold temperature
Degree is 200-260 DEG C, and extruder screw rotating speed is 1-30 revs/min；
S3, above-mentioned granulation material is passed through into twin-screw or single screw extrusion machine and mold extrusion molding, one area's temperature of extruder barrel
Degree is 160-190 DEG C, and two area's temperature are 170-210 DEG C, and three area's temperature are 180-225 DEG C, and four area's temperature are 185-235 DEG C；Mould
It is 180-225 DEG C to have area's temperature, and two area's temperature are 185-230 DEG C, and three area's temperature are 190-240 DEG C, die temperature 190-
260℃；Extruder screw rotating speed is 5-30 revs/min, and hauling speed is 0.5-10 ms/min, and water tank vacuum degree is 0.02-
0.06PMa obtains finished product tubing.
10. a kind of preparation method of environment-friendly type thermostable power cable protecting pipe according to claim 9, feature exist
In：Regenerating polypropylene in S1 need to use after anticipating, and steps are as follows：By the polypropylene material of various recycling by color point
Class, and with the broken flushing of water pigment, it is spare with the remaining water of dryer drying after flushing.
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| CN201810790850.4A CN108752750A (en) | 2018-07-18 | 2018-07-18 | A kind of formula and preparation method thereof of environment-friendly type thermostable power cable protecting pipe |
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| CN201810790850.4A CN108752750A (en) | 2018-07-18 | 2018-07-18 | A kind of formula and preparation method thereof of environment-friendly type thermostable power cable protecting pipe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234397A (en) * | 2020-01-10 | 2020-06-05 | 容健辉 | High-flame-retardance high-heat-resistance MPP (modified Polypropylene) pipe and preparation method thereof |
| CN111823444A (en) * | 2020-08-04 | 2020-10-27 | 惠州日田塑胶制品有限公司 | Pretreatment process for recycled plastic |
| CN111823476A (en) * | 2020-08-04 | 2020-10-27 | 惠州日田塑胶制品有限公司 | Injection molding process of recycled polypropylene |
| CN112409708A (en) * | 2020-12-09 | 2021-02-26 | 安徽实友电力金具有限公司 | Preparation method of power cable material applicable to ship field |
| CN112592537A (en) * | 2020-12-30 | 2021-04-02 | 国网河南省电力公司南阳供电公司 | High-elasticity cable protection pipe and preparation method thereof |
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| CN1508925A (en) * | 2002-12-16 | 2004-06-30 | 宁波信高塑化有限公司 | Bushing tube for buried medium-high voltage power cable and production method thereof |
| CN105482246A (en) * | 2015-11-27 | 2016-04-13 | 安徽宁国市高新管业有限公司 | Modified polypropylene cable protection tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1508925A (en) * | 2002-12-16 | 2004-06-30 | 宁波信高塑化有限公司 | Bushing tube for buried medium-high voltage power cable and production method thereof |
| CN105482246A (en) * | 2015-11-27 | 2016-04-13 | 安徽宁国市高新管业有限公司 | Modified polypropylene cable protection tube |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234397A (en) * | 2020-01-10 | 2020-06-05 | 容健辉 | High-flame-retardance high-heat-resistance MPP (modified Polypropylene) pipe and preparation method thereof |
| CN111823444A (en) * | 2020-08-04 | 2020-10-27 | 惠州日田塑胶制品有限公司 | Pretreatment process for recycled plastic |
| CN111823476A (en) * | 2020-08-04 | 2020-10-27 | 惠州日田塑胶制品有限公司 | Injection molding process of recycled polypropylene |
| CN112409708A (en) * | 2020-12-09 | 2021-02-26 | 安徽实友电力金具有限公司 | Preparation method of power cable material applicable to ship field |
| CN112592537A (en) * | 2020-12-30 | 2021-04-02 | 国网河南省电力公司南阳供电公司 | High-elasticity cable protection pipe and preparation method thereof |
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Application publication date: 20181106 |