CN111423673B - Heat-resistant and high-temperature-resistant PVC (polyvinyl chloride) power tube and preparation method thereof - Google Patents

Heat-resistant and high-temperature-resistant PVC (polyvinyl chloride) power tube and preparation method thereof Download PDF

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CN111423673B
CN111423673B CN202010274740.XA CN202010274740A CN111423673B CN 111423673 B CN111423673 B CN 111423673B CN 202010274740 A CN202010274740 A CN 202010274740A CN 111423673 B CN111423673 B CN 111423673B
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CN111423673A (en
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裘杨燕
陈毅明
孙东华
傅亚斌
齐国良
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Hangzhou Unicom piping Industry Co Ltd
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Hangzhou Unicom piping Industry Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
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Abstract

The invention relates to the technical field of power tubes, in particular to a heat-resistant and high-temperature-resistant PVC power tube and a preparation method thereof, and the heat-resistant and high-temperature-resistant PVC power tube comprises the following raw materials in parts by weight: 90-110 parts of PVC, 95-105 parts of CPVC, 30-45 parts of composite modified filler, 2-3 parts of heat stabilizer, 40-60 parts of plasticizer, 1-2 parts of processing aid, 0.5-1.5 parts of flame retardant, 0.5-1 part of antioxidant and 0.5-1 part of ultraviolet absorbent, wherein the composite modified filler takes nano glass fiber as a framework, and an ABS/modified montmorillonite composite layer is coated outside the framework. The heat-resistant and high-temperature-resistant PVC electric power tube prepared by the invention is modified by adding the composite modified filler into the matrix material, and has good heat-resistant and high-temperature-resistant properties.

Description

Heat-resistant and high-temperature-resistant PVC (polyvinyl chloride) power tube and preparation method thereof
Technical Field
The invention relates to the technical field of power tubes, in particular to a heat-resistant and high-temperature-resistant PVC power tube and a preparation method thereof.
Background
The development of electric power energy is related to national civilization and national safety, along with the continuous and rapid development of the economic society of China, the electric power demand also enters a high-speed growth period, recently, the development of urban planning and construction and the tidiness and beauty of urban appearance are realized, high-voltage electric wires are required to be completely buried underground, and because the high voltage of the high-voltage cable is high, the high temperature is easily generated by heating or is generated by instant accidental short circuit, people usually use plastic pipelines, metal pipelines or glass steel tubes as the protective pipe sleeve materials of the high-voltage cable.
The metal pipeline has poor corrosion resistance, and the service life of the metal pipeline is generally corroded and damaged only in 15-30 years; the glass fiber reinforced plastic pipe is easy to pollute in production and use due to the adoption of a glass fiber winding coating process, is high in brittleness, cannot resist heavy pressure, beating or collision, is easy to delaminate, and influences service life, so that the plastic electric power pipe is gradually favored by people, and gradually replaces a metal pipeline and a glass fiber reinforced plastic pipe.
The PVC material has the characteristics of good rigidity, high strength, flame retardance, corrosion resistance and good electrical insulation; and the processing performance is good, the price is low, so the method has wide application in the power tube industry. The existing polyvinyl chloride electric power tube is made by using polyvinyl chloride resin as a base material, adding a plasticizer, a stabilizer and a processing aid, and processing the polyvinyl chloride by a special mixing device, but the polyvinyl chloride has poor stability to light and heat, the softening point is 80 ℃, the decomposition starts at 130 ℃, the polyvinyl chloride starts to decompose at 100 ℃ under the condition of not adding a heat stabilizer, and the decomposition is faster at more than 130 ℃, so that the improvement on the high temperature resistance of the polyvinyl chloride electric power tube is necessary.
Disclosure of Invention
In view of the above, the invention aims to provide a heat-resistant and high-temperature-resistant PVC power pipe and a preparation method thereof, and the prepared power pipe is modified by adding a composite modified filler into a base material, and has good heat-resistant and high-temperature-resistant properties, flame retardancy and the like.
The invention solves the technical problems by the following technical means:
a heat-resistant and high-temperature-resistant PVC electric power pipe comprises the following raw materials in parts by weight: 90-110 parts of PVC, 95-105 parts of CPVC, 30-45 parts of composite modified filler, 2-3 parts of heat stabilizer, 40-60 parts of plasticizer, 1-2 parts of processing aid, 0.5-1 part of antioxidant and 0.5-1 part of ultraviolet absorbent, wherein the composite modified filler takes nano glass fiber as a framework, and an ABS/modified montmorillonite composite layer is coated outside the framework.
The PVC power tube of the invention takes a PVC and CPVC composite substrate material as a substrate material, chlorinated polyvinyl chloride is a product obtained by further chlorinating PVC resin, and has better heat resistance and mechanical property compared with PVC resin, and the thermal deformation temperature of the polyvinyl chloride can be greatly improved by adding the chlorinated polyvinyl chloride into the polyvinyl chloride substrate material The network structure and the nanometer glass fiber provide the connection and support function for the three-dimensional structure, so that the three-dimensional network structure is more stable, and the heat resistance and the high temperature resistance of the power tube are further improved.
Further, the PVC electric power pipe comprises the following raw materials in parts by weight: 100 parts of PVC, 95 parts of CPVC, 40 parts of composite modified filler, 2 parts of heat stabilizer, 50 parts of plasticizer, 1 part of processing aid, 0.8 part of antioxidant and 0.6 part of ultraviolet absorbent.
Further, the plasticizer is at least one of glyceride, epoxidized soybean oil, adipic acid diester and diisobutyl phthalate.
Further, the heat stabilizer is one or two of a calcium-zinc composite stabilizer and zinc stearate.
Further, the processing aid is ACR401, and the antioxidant is 1076.
In addition, the invention also discloses a preparation method of the heat-resistant high-temperature-resistant PVC electric power tube, which comprises the following steps:
PVC, CPVC, composite modified filler, a heat stabilizer, a plasticizer, a processing aid, an antioxidant, a flame retardant and an ultraviolet absorbent are respectively weighed according to the proportion, the PVC and the CPVC are firstly added into a high-speed mixer, the heat stabilizer is added after the mixture is subjected to hot mixing to 65 ℃, the plasticizer and the processing aid are added after the mixture is heated to 80 ℃, the composite modified filler, the antioxidant, the flame retardant and the ultraviolet absorbent are added after the mixture is heated to 90 ℃, the mixture is discharged to a cold mixer for cooling when the temperature of the mixture reaches 110-130 ℃, the mixture is discharged when the temperature of the mixture is reduced to 55 ℃ in the cold mixer, the mixture is conveyed to a double-screw extruder, and the electric power tube is obtained after the mixture is extruded by the double-screw extruder.
Further, the technological parameters of the double-screw extruder are as follows: the first zone is: the temperature of the two zones is 185-190 ℃, the temperature of the three zones is 180-185 ℃, the temperature of the four zones is 175-180 ℃, the temperature of the five zones is 165-170 ℃, the temperature of the head is 180-190 ℃, the temperature of water cooling is 10-30 ℃ and the traction speed is 5-7 m/min.
Further, the preparation of the composite modified filler specifically comprises the following steps: stirring and mixing 50-75 parts by weight of deionized water, 10-20 parts by weight of alpha-methylstyrene, 3-6 parts by weight of acrylonitrile, 0.01-0.02 part by weight of tert-dodecyl mercaptan, 0.1-0.2 part by weight of cumene hydroperoxide and 1.2-1.5 parts by weight of abietic acid soap to obtain a monomer mixed solution, adding 100 parts by weight of deionized water, 0.18-0.3 part by weight of glucose, 0.12-0.15 part by weight of sodium pyrophosphate, 0.25-0.4 part by weight of potassium fatty acid salt and 0.00015-0.0003 part by weight of ferrous sulfate solution into a reaction kettle, stirring until the solid is completely dissolved, adding 1.8-3 parts by weight of potassium abietate, 0.15-0.25 part by weight of potassium hydroxide and 30-45 parts by weight of polybutadiene latex, introducing nitrogen, adding 2-3 parts by weight of modified montmorillonite under the nitrogen atmosphere, stirring and dispersing, adding 8-10 parts by weight of nano glass fiber, heating to 75 ℃, continuously adding the monomer mixed solution into a reaction kettle for 5 hours by a peristaltic pump, heating to 80 ℃ after the reaction is finished, keeping the temperature for 1 hour, cooling to 60 ℃, stopping the reaction, and demulsifying, filtering, dehydrating and drying to obtain the composite modified filler.
Further, the preparation method of the modified montmorillonite specifically comprises the following steps:
s1: stirring and dispersing montmorillonite in deionized water, ultrasonically dispersing for 30 minutes, adding p-phenylenediamine and ammonia water under the protection of nitrogen, stirring and reacting for 4 hours, then heating to 80 ℃, preserving heat and reacting for 4 hours, filtering, washing a filter cake with hot water and absolute ethyl alcohol, drying, and ultrasonically dispersing in toluene to obtain a suspension solution;
s2: dissolving di-n-butyltin maleate in toluene, heating to 120 ℃, performing ultrasonic treatment until the solution is completely dissolved, adding the suspension, heating to 100 ℃ in a nitrogen atmosphere, performing heat preservation reaction for 12 hours, slowly pouring the reaction solution into low-temperature ethanol after the reaction is finished, filtering, and drying the filter cake at 80 ℃ for 48 hours to obtain the di-n-butyltin maleate grafted montmorillonite;
s3: stirring and dispersing the di-n-butyltin maleate grafted montmorillonite in deionized water, adding hexadecyl trimethyl ammonium bromide, heating to 70 ℃, continuously stirring and reacting for 6 hours, filtering after the reaction is finished, and washing, drying and grinding a filter cake to obtain the modified montmorillonite.
The di-n-butyltin maleate is used as a heat stabilizer of the PVC material and is grafted to the surface of montmorillonite, firstly, the di-n-butyltin maleate can improve the heat stability of the body material and is grafted to the surface of the montmorillonite to play a role in fixing the montmorillonite, and the probability that the di-n-butyltin maleate moves from the inside of the base material to the surface is reduced to a certain extent in the using process, so that the probability of the phenomenon of frosting of the power pipe is reduced.
The invention has the beneficial effects that:
the power pipe disclosed by the invention has the advantages that the PVC and CPVC are compounded to be used as the base material of the power pipe, and compared with the traditional PVC power pipe, the power pipe has better heat resistance, the composite modified filler is added into the raw materials, the nano glass fiber is used as a framework, and the ABS/modified montmorillonite composite layer is compounded and coated on the surface of the nano glass fiber, so that the thermal deformation temperature and the thermal stability of the power pipe are improved through the mutual cooperation of the components, and meanwhile, the mechanical property of the power pipe is also improved.
Detailed Description
The present invention will be described in detail below with reference to specific examples:
the heat-resistant and high-temperature-resistant PVC electric power pipe is modified by adding the composite modified filler into the base material, has good heat-resistant and high-temperature-resistant performances, and is prepared specifically as follows:
example one
Preparation of modified montmorillonite
S1: stirring and dispersing montmorillonite in deionized water according to a solid-liquid ratio of 3g/L, ultrasonically dispersing for 30 minutes, then adding p-phenylenediamine and ammonia water under the protection of nitrogen, wherein the mass ratio of the montmorillonite to the p-phenylenediamine to the ammonia water is 1:5:5, stirring and reacting for 4 hours, then heating to 80 ℃, carrying out heat preservation and reaction for 4 hours, filtering, washing a filter cake with hot water and absolute ethyl alcohol, drying, and ultrasonically dispersing in toluene according to a solid-liquid ratio of 2g/L to obtain a suspension solution;
S2: dissolving di-n-butyltin maleate with the mass 10 times that of montmorillonite in toluene, heating to 120 ℃ and carrying out ultrasonic treatment until the solution is completely dissolved, adding the suspension, heating to 100 ℃ in a nitrogen atmosphere, carrying out heat preservation reaction for 12 hours, slowly pouring the reaction solution into low-temperature ethanol after the reaction is finished, filtering, and drying the filter cake at 80 ℃ for 48 hours to obtain the di-n-butyltin maleate grafted montmorillonite;
s3: stirring and dispersing montmorillonite grafted with di-n-butyltin maleate in deionized water, adding hexadecyl trimethyl ammonium bromide, heating to 70 ℃, continuously stirring and reacting for 6 hours, filtering after the reaction is finished, washing a filter cake, drying in vacuum at 60 ℃, and grinding to obtain modified montmorillonite, wherein the mass ratio of the montmorillonite grafted with di-n-butyltin maleate, the deionized water and the hexadecyl trimethyl ammonium bromide is 1:20: 0.1.
Preparation of composite modified filler
Respectively weighing 30 parts by weight of deionized water, 15 parts by weight of alpha-methylstyrene, 5 parts of acrylonitrile, 0.01 part of tert-dodecyl mercaptan, 0.2 part of cumene hydroperoxide and 1.2 parts of rosin acid soap, stirring and mixing to obtain a monomer mixed solution, respectively adding 70 parts by weight of ionized water, 0.25 part by weight of glucose, 0.14 part by weight of sodium pyrophosphate, 0.3 part by weight of potassium fatty acid salt and 0.0002 part by weight of ferrous sulfate solution into a reaction kettle, stirring until the solid is completely dissolved, adding 2 parts by weight of potassium rosinate, 0.2 part by weight of potassium hydroxide and 40 parts by weight of polybutadiene latex, introducing nitrogen, adding 2 parts by weight of modified montmorillonite under the nitrogen atmosphere, stirring and dispersing, adding 9 parts by weight of nano glass fiber, heating to 75 ℃, continuously adding the monomer mixed solution into the reaction kettle by a peristaltic pump for 5 hours, heating to 80 ℃ after the reaction is finished, keeping the temperature for 1 hour, and then cooling to 60 ℃, stopping the reaction, and performing demulsification, filtration, dehydration and drying to obtain the composite modified filler.
Preparation of power tube
Firstly, weighing the following components in proportion respectively: 90 parts of PVC, 105 parts of CPVC, 30 parts of composite modified filler, 2 parts of calcium-zinc composite stabilizer, 40 parts of glyceride, 4011 parts of processing aid ACR, 10760.5 parts of antioxidant and 0.5 part of UV531 ultraviolet absorber.
Adding PVC and CPVC into a high-speed mixer, hot mixing to 65 ℃, adding a heat stabilizer, heating to 80 ℃, adding a plasticizer and a processing aid, heating to 90 ℃, adding a composite modified filler, an antioxidant, a flame retardant and an ultraviolet absorbent, discharging materials to a cold mixer for cooling when the temperature of the mixture reaches 110-130 ℃, discharging materials when the temperature of the mixture in the cold mixer is reduced to 55 ℃, conveying the raw materials to a double-screw extruder, and setting the technological parameters of the double-screw extruder as follows: the first zone is 190 ℃, the second zone is 185 ℃, the third zone is 180 ℃, the fourth zone is 175 ℃, the fifth zone is 170 ℃, the head temperature is 180 ℃, the water cooling temperature is 10 ℃, the traction speed is 6m/min, and the electric power tube is obtained after being extruded by a double-screw extruder.
Example two
The preparation of the modified montmorillonite is the same as that of the first embodiment.
Preparation of composite modified filler
Respectively weighing 50 parts by weight of deionized water, 10 parts by weight of alpha-methylstyrene, 3 parts of acrylonitrile, 0.01 part of tert-dodecyl mercaptan, 0.1 part of cumene hydroperoxide and 1.4 parts by weight of abietic acid soap, stirring and mixing to obtain a monomer mixed solution, respectively adding 100 parts by weight of ionized water, 0.3 part by weight of glucose, 0.15 part by weight of sodium pyrophosphate, 0.4 part by weight of potassium fatty acid salt and 0.0003 part by weight of ferrous sulfate solution into a reaction kettle, stirring until the solid is completely dissolved, adding 3 parts by weight of potassium abietate, 0.25 part by weight of potassium hydroxide and 45 parts by weight of polybutadiene latex, introducing nitrogen, adding 2 parts by weight of modified montmorillonite under the nitrogen atmosphere, stirring and dispersing, adding 8 parts by weight of nano glass fiber, heating to 75 ℃, continuously adding the monomer mixed solution into the reaction kettle by a peristaltic pump for 5 hours, heating to 80 ℃ after the reaction is finished, keeping the temperature for 1 hour, then cooling to 60 ℃, stopping the reaction, and obtaining the composite modified filler after demulsification, filtration, dehydration and drying.
Preparation of power tube
Firstly, weighing the following components in proportion respectively: 100 parts of PVC, 95 parts of CPVC, 40 parts of composite modified filler, 2 parts of zinc stearate, 50 parts of epoxidized soybean oil, 4011 parts of processing aid ACR, 10760.8 parts of antioxidant and 0.6 part of UV531 ultraviolet absorber.
Adding PVC and CPVC into a high-speed mixer, hot mixing to 65 ℃, adding a heat stabilizer, heating to 80 ℃, adding a plasticizer and a processing aid, heating to 90 ℃, adding a composite modified filler, an antioxidant, a flame retardant and an ultraviolet absorbent, discharging materials to a cold mixer for cooling when the temperature of the mixture reaches 110-130 ℃, discharging materials when the temperature of the mixture in the cold mixer is reduced to 55 ℃, conveying the raw materials to a double-screw extruder, and setting the technological parameters of the double-screw extruder as follows: the temperature of the first zone is 195 ℃, the temperature of the second zone is 185 ℃, the temperature of the third zone is 180 ℃, the temperature of the fourth zone is 175 ℃, the temperature of the fifth zone is 165 ℃, the temperature of a machine head is 180 ℃, the temperature of water cooling is 30 ℃, the traction speed is 5m/min, and the electric power tube is obtained after being extruded by a double-screw extruder.
EXAMPLE III
The preparation of the modified montmorillonite is the same as that of the first embodiment.
Preparation of composite modified filler
Respectively weighing 75 parts by weight of deionized water, 20 parts by weight of alpha-methylstyrene, 6 parts of acrylonitrile, 0.02 part of tert-dodecyl mercaptan, 0.2 part of cumene hydroperoxide and 1.5 parts by weight of abietic acid soap, stirring and mixing to obtain a monomer mixed solution, respectively adding 125 parts by weight of ionized water, 0.18 part by weight of glucose, 0.12 part by weight of sodium pyrophosphate, 0.25 part by weight of potassium fatty acid salt and 0.00015 part by weight of ferrous sulfate solution into a reaction kettle, stirring until the solid is completely dissolved, adding 1.8 parts by weight of potassium abietate, 0.15 part by weight of potassium hydroxide and 30 parts by weight of polybutadiene latex, introducing nitrogen, adding 3 parts by weight of modified montmorillonite under the atmosphere of nitrogen, stirring and dispersing, adding 10 parts by weight of nano glass fiber, heating to 75 ℃, continuously adding the monomer mixed solution into the reaction kettle by a peristaltic pump for 5 hours, heating to 80 ℃ after the reaction is finished, keeping the temperature for 1 hour, then cooling to 60 ℃, stopping the reaction, and obtaining the composite modified filler after demulsification, filtration, dehydration and drying.
Preparation of electric power tube
Firstly, weighing the following components in proportion respectively: 110 parts of PVC, 100 parts of CPVC, 45 parts of composite modified filler, 3 parts of zinc stearate, 60 parts of diisobutyl phthalate, 4012 parts of processing aid ACR, 10761 parts of antioxidant and 1 part of UV531 ultraviolet absorber.
Adding PVC and CPVC into a high-speed mixer, hot mixing to 65 ℃, adding a heat stabilizer, heating to 80 ℃, adding a plasticizer and a processing aid, heating to 90 ℃, adding a composite modified filler, an antioxidant, a flame retardant and an ultraviolet absorbent, discharging materials to a cold mixer for cooling when the temperature of the mixture reaches 110-130 ℃, discharging materials when the temperature of the mixture in the cold mixer is reduced to 55 ℃, conveying the raw materials to a double-screw extruder, and setting the technological parameters of the double-screw extruder as follows: the first zone is 200 ℃, the second zone is 190 ℃, the third zone is 185 ℃, the fourth zone is 180 ℃, the fifth zone is 170 ℃, the head temperature is 190 ℃, the water cooling temperature is 20 ℃, the traction speed is 7m/min, and the electric power tube is obtained after extrusion by a double-screw extruder.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.

Claims (8)

1. The heat-resistant and high-temperature-resistant PVC electric power pipe is characterized by comprising the following raw materials in parts by weight: 90-110 parts of PVC (polyvinyl chloride), 95-105 parts of CPVC (chlorinated polyvinyl chloride), 30-45 parts of composite modified filler, 2-3 parts of heat stabilizer, 40-60 parts of plasticizer, 1-2 parts of processing aid, 0.5-1 part of antioxidant and 0.5-1 part of ultraviolet absorbent, wherein the composite modified filler takes nano glass fiber as a framework, and an ABS (acrylonitrile butadiene styrene)/modified montmorillonite composite layer is coated outside the framework;
the preparation method of the composite modified filler comprises the following steps: stirring and mixing 50-75 parts by weight of deionized water, 10-20 parts by weight of alpha-methylstyrene, 3-6 parts by weight of acrylonitrile, 0.01-0.02 part by weight of tert-dodecyl mercaptan, 0.1-0.2 part by weight of cumene hydroperoxide and 1.2-1.5 parts by weight of abietic acid soap to obtain a monomer mixed solution, adding 100 parts by weight of deionized water, 0.18-0.3 part by weight of glucose, 0.12-0.15 part by weight of sodium pyrophosphate, 0.25-0.4 part by weight of potassium fatty acid salt and 0.00015-0.0003 part by weight of ferrous sulfate solution into a reaction kettle, stirring until the solid is completely dissolved, adding 1.8-3 parts by weight of potassium abietate, 0.15-0.25 part by weight of potassium hydroxide and 30-45 parts by weight of polybutadiene latex, introducing nitrogen, adding 2-3 parts by weight of modified montmorillonite under the nitrogen atmosphere, stirring and dispersing, adding 8-10 parts by weight of nano glass fiber, heating to 75 ℃, continuously adding the monomer mixed solution into a reaction kettle for 5 hours by a peristaltic pump, heating to 80 ℃ after the reaction is finished, keeping the temperature for 1 hour, cooling to 60 ℃, stopping the reaction, and demulsifying, filtering, dehydrating and drying to obtain the composite modified filler.
2. The PVC electric power pipe with heat resistance and high temperature resistance as claimed in claim 1, wherein the PVC electric power pipe comprises the following raw materials in parts by weight: 100 parts of PVC, 95 parts of CPVC, 40 parts of composite modified filler, 2 parts of heat stabilizer, 50 parts of plasticizer, 1 part of processing aid, 0.8 part of antioxidant and 0.6 part of ultraviolet absorbent.
3. The PVC power pipe as claimed in claim 2, wherein the plasticizer is at least one of glyceride, epoxidized soybean oil, diester adipate and diisobutyl phthalate.
4. The PVC electric power pipe as claimed in claim 3, wherein the heat stabilizer is one or both of calcium-zinc composite stabilizer and zinc stearate.
5. The PVC electric power pipe as claimed in claim 4, wherein the processing aid is ACR401 and the antioxidant is 1076.
6. The preparation method of the heat-resistant high-temperature-resistant PVC electric power pipe as claimed in any one of claims 1 to 5, wherein the preparation method specifically comprises the following steps:
PVC, CPVC, composite modified filler, a heat stabilizer, a plasticizer, a processing aid, an antioxidant, a flame retardant and an ultraviolet absorbent are respectively weighed according to the proportion, the PVC and the CPVC are firstly added into a high-speed mixer, the heat stabilizer is added after the mixture is subjected to hot mixing to 65 ℃, the plasticizer and the processing aid are added after the mixture is heated to 80 ℃, the composite modified filler, the antioxidant, the flame retardant and the ultraviolet absorbent are added after the mixture is heated to 90 ℃, the mixture is discharged to a cold mixer for cooling when the temperature of the mixture reaches 110-130 ℃, the mixture is discharged when the temperature of the mixture is reduced to 55 ℃ in the cold mixer, the mixture is conveyed to a double-screw extruder, and the electric power tube is obtained after the mixture is extruded by the double-screw extruder.
7. The preparation method of the heat-resistant high-temperature-resistant PVC electric power pipe as claimed in claim 6, wherein the process parameters of the twin-screw extruder are as follows: the first zone is 195-plus-200 ℃, the second zone is 185-plus-190 ℃, the third zone is 180-plus-185 ℃, the fourth zone is 175-plus-180 ℃, the fifth zone is 165-plus-170 ℃, the head temperature is 180-190 ℃, the water cooling temperature is 10-30 ℃, and the traction speed is 5-7 m/min.
8. The preparation method of the heat-resistant high-temperature-resistant PVC electric power tube according to claim 7, wherein the preparation method of the modified montmorillonite specifically comprises the following steps:
s1: stirring and dispersing montmorillonite in deionized water, ultrasonically dispersing for 30 minutes, adding p-phenylenediamine and ammonia water under the protection of nitrogen, stirring and reacting for 4 hours, then heating to 80 ℃, preserving heat and reacting for 4 hours, filtering, washing a filter cake with hot water and absolute ethyl alcohol, drying, and ultrasonically dispersing in toluene to obtain a suspension solution;
s2: dissolving di-n-butyltin maleate in toluene, heating to 120 ℃, performing ultrasonic treatment until the solution is completely dissolved, adding the suspension, heating to 100 ℃ in a nitrogen atmosphere, performing heat preservation reaction for 12 hours, slowly pouring the reaction solution into low-temperature ethanol after the reaction is finished, filtering, and drying the filter cake at 80 ℃ for 48 hours to obtain the di-n-butyltin maleate grafted montmorillonite;
S3: stirring and dispersing the di-n-butyltin maleate grafted montmorillonite in deionized water, adding hexadecyl trimethyl ammonium bromide, heating to 70 ℃, continuously stirring and reacting for 6 hours, filtering after the reaction is finished, and washing, drying and grinding a filter cake to obtain the modified montmorillonite.
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* Cited by examiner, † Cited by third party
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CN102391591A (en) * 2011-07-28 2012-03-28 联塑市政管道（河北）有限公司 Polrvinyl chloride electric power protecting sleeve and processing method thereof
CN109370110A (en) * 2018-10-25 2019-02-22 福建亚通新材料科技股份有限公司 A kind of modified form underground pipe gallery power pipe

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WO2009058768A1 (en) * 2007-10-29 2009-05-07 Lubrizol Advanced Materials, Inc. Cpvc pipe with 25% higher hydrostatic design basis than required under astm d2846

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102391591A (en) * 2011-07-28 2012-03-28 联塑市政管道（河北）有限公司 Polrvinyl chloride electric power protecting sleeve and processing method thereof
CN109370110A (en) * 2018-10-25 2019-02-22 福建亚通新材料科技股份有限公司 A kind of modified form underground pipe gallery power pipe

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