CN111609223A - PE high-pressure water supply pipe and preparation method thereof - Google Patents
PE high-pressure water supply pipe and preparation method thereof Download PDFInfo
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- CN111609223A CN111609223A CN202010430758.4A CN202010430758A CN111609223A CN 111609223 A CN111609223 A CN 111609223A CN 202010430758 A CN202010430758 A CN 202010430758A CN 111609223 A CN111609223 A CN 111609223A
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- antibacterial
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- glass beads
- inner pipe
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 65
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 57
- 239000011324 bead Substances 0.000 claims abstract description 51
- 239000011521 glass Substances 0.000 claims abstract description 51
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 25
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 25
- 239000010457 zeolite Substances 0.000 claims abstract description 25
- 239000007864 aqueous solution Substances 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 17
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims abstract description 11
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 7
- 239000004698 Polyethylene Substances 0.000 claims description 89
- 238000001035 drying Methods 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 18
- -1 polyethylene Polymers 0.000 claims description 17
- 229920000573 polyethylene Polymers 0.000 claims description 17
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 16
- 239000000839 emulsion Substances 0.000 claims description 16
- 238000009210 therapy by ultrasound Methods 0.000 claims description 16
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 13
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- DCAYPVUWAIABOU-UHFFFAOYSA-N hexadecane Chemical compound CCCCCCCCCCCCCCCC DCAYPVUWAIABOU-UHFFFAOYSA-N 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 8
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 8
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 239000003999 initiator Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 4
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 abstract description 5
- 241000894006 Bacteria Species 0.000 abstract description 4
- 239000003899 bactericide agent Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001954 sterilising effect Effects 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 238000004659 sterilization and disinfection Methods 0.000 abstract 1
- 230000007774 longterm Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/133—Rigid pipes of plastics with or without reinforcement the walls consisting of two layers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
- 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
- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a PE high-pressure water supply pipe and a preparation method thereof, the PE high-pressure water supply pipe comprises an antibacterial inner pipe prepared by antibacterial modified PE material and a protective outer pipe prepared by processing reinforced modified PE material, wherein the antibacterial modified PE material takes zeolite as a carrier, zinc ions as a bactericide, on one hand, the antibacterial modified PE material has the effect of reinforcing the PE material, on the other hand, the PE material has the effect of bacteriostasis and sterilization, the condition that a large amount of bacteria exist in the PE pipeline in the long-time working process can be effectively avoided, the reinforced modified PE material uniformly disperses and mixes the modified glass beads and carbon nano tubes in sodium dodecyl benzene sulfonate aqueous solution, and then the dispersed and mixed glass beads and the carbon nano tubes are mixed with the PE material as modified fillers, wherein the glass bead material improves the impact strength of the PE pipeline, the carbon nano tubes improve the toughness of the PE pipeline, and by arranging a two-layer structure, the inner layer of the pipeline is not easy to generate bacteria, and the PE pipeline has good strength and toughness.
Description
Technical Field
The invention belongs to the technical field of water delivery pipes, and particularly relates to a PE high-pressure water supply pipe and a preparation method thereof.
Background
Polyethylene, PE for short, is a thermoplastic resin obtained by polymerizing ethylene, and industrially, also includes copolymers of ethylene with a small amount of α -olefin. The polyethylene has no odor and no toxicity, feels like wax, has excellent low-temperature resistance, has the lowest use temperature of-100 to-70 ℃, has good chemical stability, can resist the corrosion of most of acid and alkali, is insoluble in common solvents at normal temperature, has small water absorption and excellent electrical insulation.
Due to the excellent properties of polyethylene materials, polyethylene materials are widely applied to water conveying pipelines instead of most metal pipelines at present, wherein when the polyethylene materials are used as water conveying pipelines, the water conveying pipelines need to have good high pressure resistance according to the current water conveying environment, on one hand, the strength and toughness of the pipelines are improved, and the phenomena of deformation and cracking of the pipelines in the long-term high-pressure water conveying environment are avoided, on the other hand, the situation that microorganisms are bred on the inner pipe wall of the water conveying pipeline in the long-term use process to pollute the transmitted water resources is also avoided.
Disclosure of Invention
The invention aims to provide a PE high-pressure water supply pipe and a preparation method thereof.
The technical problems to be solved by the invention are as follows:
according to the existing water delivery environment, the water delivery pipeline needs to have good high pressure resistance, on one hand, the strength and toughness of the pipeline are improved, the phenomenon that the pipeline deforms and cracks in the long-term high-pressure water delivery environment is avoided, on the other hand, the situation that the water supply pipe is polluted due to the fact that microorganisms breed on the inner pipe wall in the long-term use process is avoided, and one material in the prior art cannot meet various requirements, so that the formed PE pipe has obvious defects.
The purpose of the invention can be realized by the following technical scheme:
a PE high-pressure water supply pipe comprises an antibacterial inner pipe and a protective outer pipe coated on the surface of the antibacterial inner pipe, wherein the antibacterial inner pipe is made of an antibacterial modified PE material, and the protective outer pipe is made of a reinforced modified PE material;
the preparation method of the antibacterial modified PE material comprises the following steps:
s1, crushing and grinding the zeolite until the particle size is smaller than 1 mu m, adding the crushed zeolite into deionized water, heating, boiling, filtering, drying, and roasting in a muffle furnace at the temperature of 300-450 ℃ for 2-3 h;
s2, adding the zeolite obtained by the treatment in the step S1 into a zinc nitrate aqueous solution, carrying out ultrasonic treatment for 10-20min, drying for 1-3h at 60-90 ℃ after filtering, and roasting for 1.5-2h at 500 ℃ at 400-;
s3, melting and mixing 80-99 parts by weight of polyethylene, 1-15 parts by weight of antibacterial zeolite filler, 3-10 parts by weight of polyethylene wax and 0.5-2 parts by weight of KH-570, and extruding to obtain the antibacterial modified PE material.
In the step, zeolite is used as a carrier, zinc ions are used as a bactericide, the zinc ions with the bactericidal effect are uniformly dispersed in the microporous structure of the zeolite, and then the zeolite is uniformly dispersed in the PE material, so that the PE material has an enhanced effect on the one hand, and has an antibacterial and sterilizing effect on the other hand, and the condition that a large amount of bacteria exist in the PE pipeline in a long-time working process can be effectively avoided.
The preparation method of the PE high-pressure water supply pipe comprises the following steps:
firstly, preparing an antibacterial modified PE material, adding the antibacterial modified PE material into an extruder, and extruding and molding to obtain an inner pipe;
and secondly, preparing a reinforced modified PE material, heating the inner pipe to the surface temperature of 50-80 ℃, coating the reinforced modified antibacterial material in a molten state on the surface of the inner pipe, and shaping to form the PE high-pressure water supply pipe.
As a further scheme of the invention, the surface of the inner pipe is in a thread structure.
As a further scheme of the invention, the preparation method of the reinforced modified PE material comprises the following steps:
SS1, preparing a sodium dodecyl sulfate aqueous solution with the mass concentration of 0.4-5%, heating in a water bath, keeping the temperature at 50-60 ℃, adding 7-12% of glass beads by mass into the aqueous solution, keeping the temperature, stirring for 10-30min, filtering, taking out the glass beads, and drying at the temperature of 50-70 ℃ for 10-30 min;
the surface of the glass bead is treated by the sodium dodecyl sulfate, so that the hydrophilic and oleophobic properties of the glass bead are improved;
and SS2, adding the treated glass bead intermediate into an oil phase, and uniformly mixing for later use, wherein the oil phase is prepared by mixing styrene and n-hexadecane according to a volume ratio of 1: 1-3, wherein the mass fraction of the glass beads in the oil phase is 6% -13%;
adding sodium dodecyl sulfate and sodium bicarbonate into deionized water to dissolve to obtain a water phase, wherein the mass concentration of the sodium dodecyl sulfate is 1% -5%, the mass concentration of the sodium bicarbonate is 2% -4%, adding an oil phase into the water phase, performing ultrasonic treatment and stirring for 15-30min to obtain an emulsion, wherein the volume ratio of the oil phase to the water phase is 1: 0.4 to 1;
SS3, heating the emulsion obtained in the last step in a water bath to 70-75 ℃, adding an ammonium persulfate initiator into the emulsion, heating the mixture for reaction for 3.5-4.5 hours, filtering, drying and drying the mixture to obtain modified glass beads;
the glass beads are uniformly dispersed in the emulsion, and then the emulsion is polymerized, so that polystyrene generated by polymerization is uniformly compounded on the surfaces of the glass beads, and the glass beads have good dispersion property;
SS4, preparing a sodium dodecyl benzene sulfonate aqueous solution with the mass concentration of 0.4-5%, heating in a water bath, keeping the temperature at 50-60 ℃, adding 0.1-1% of carbon nano tubes by mass fraction, maintaining ultrasonic treatment after ultrasonic dispersion treatment for 0.5-3h, adding the modified glass bead filler obtained by treatment in the step SS3 for multiple times, wherein the weight ratio of the modified glass bead filler to the carbon nano tubes is 10-20:1, continuing ultrasonic treatment for 20-60min after the modified glass beads are completely added, filtering, and drying at the temperature of 50-90 ℃ to obtain the modified filler;
SS5, and melting and mixing 85-99 parts by weight of polyethylene, 0.3-1 part by weight of antioxidant and 1-15 parts by weight of modified filler, and extruding to obtain the reinforced modified PE material.
The modified glass beads and the carbon nano tubes are uniformly dispersed and mixed in a sodium dodecyl benzene sulfonate aqueous solution, and then the dispersed and mixed glass beads and the carbon nano tubes are used as modified fillers to be mixed with a PE material, wherein the glass bead material can effectively improve the impact strength of a PE pipeline, and the carbon nano tubes can effectively improve the toughness of the PE pipeline.
The invention has the beneficial effects that:
the PE high-pressure water supply pipe comprises an antibacterial inner pipe and a protective outer pipe, wherein the antibacterial inner pipe is prepared from an antibacterial modified PE material, the protective outer pipe is prepared from a reinforced modified PE material, zeolite serves as a carrier of the antibacterial modified PE material, zinc ions serve as a bactericide, the zinc ions with the bactericidal effect are uniformly dispersed in a microporous structure of the zeolite, the zeolite is uniformly dispersed in the PE material, on one hand, the reinforcing effect is achieved on the PE material, on the other hand, the PE material has the antibacterial and sterilizing effects, the condition that a large amount of bacteria exist in a PE pipeline in a long-time working process can be effectively avoided, the reinforced modified PE material uniformly disperses glass beads in emulsion, and then the emulsion is polymerized, so that polystyrene generated by polymerization is uniformly compounded on the surfaces of the glass beads, and the glass beads have good dispersing property; the modified glass beads and the carbon nano tubes are uniformly dispersed and mixed in a sodium dodecyl benzene sulfonate aqueous solution, and then the dispersed and mixed glass beads and the carbon nano tubes are used as modified fillers to be mixed with a PE material, wherein the glass beads can effectively improve the impact strength of a PE pipeline, the carbon nano tubes can effectively improve the toughness of the PE pipeline, the inner layer of the pipeline is not easy to self-bacteria by arranging the pipeline with a two-layer structure, and the PE pipeline has good strength and toughness.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A PE high-pressure water supply pipe comprises an antibacterial inner pipe and a protective outer pipe coated on the surface of the antibacterial inner pipe, wherein the antibacterial inner pipe is made of an antibacterial modified PE material, and the protective outer pipe is made of a reinforced modified PE material;
the preparation method of the PE high-pressure water supply pipe comprises the following steps:
firstly, preparing an antibacterial modified PE material, adding the antibacterial modified PE material into an extruder, and extruding and molding to obtain an inner pipe;
and secondly, preparing a reinforced modified PE material, heating the inner pipe to the surface temperature of 80 ℃, coating the reinforced modified antibacterial material in a molten state on the surface of the inner pipe, and shaping to form the PE high-pressure water supply pipe.
The preparation method of the antibacterial modified PE material comprises the following steps:
s1, crushing and grinding zeolite until the particle size is smaller than 1 mu m, adding the crushed zeolite into deionized water, heating, boiling, filtering, drying, and roasting in a muffle furnace at the temperature of 350 ℃ for 3 hours;
s2, adding the zeolite obtained by the treatment in the step S1 into a zinc nitrate water solution, carrying out ultrasonic treatment for 20min, filtering, drying at 70 ℃ for 2h, and roasting at 450 ℃ for 2h to obtain an antibacterial zeolite filler;
s3, melting and mixing 85 parts by weight of polyethylene, 12 parts by weight of antibacterial zeolite filler, 4 parts by weight of polyethylene wax and 1 part by weight of KH-570, and extruding to obtain the antibacterial modified PE material.
The preparation method of the reinforced modified PE material comprises the following steps:
SS1, preparing a sodium dodecyl sulfate aqueous solution with the mass concentration of 3%, heating in a water bath, keeping the temperature at 60 ℃, adding glass beads with the mass fraction of 10%, stirring for 20min under the condition of keeping the temperature, filtering, taking out the glass beads, and drying for 20min at the temperature of 70 ℃;
and SS2, adding the treated glass bead intermediate into an oil phase, and uniformly mixing for later use, wherein the oil phase is prepared by mixing styrene and n-hexadecane according to a volume ratio of 1: 2, mixing the glass beads in the oil phase, wherein the mass fraction of the glass beads in the oil phase is 8%;
adding sodium dodecyl sulfate and sodium bicarbonate into deionized water to dissolve to obtain a water phase, wherein the mass concentration of the sodium dodecyl sulfate is 3%, the mass concentration of the sodium bicarbonate is 3%, adding an oil phase into the water phase, performing ultrasonic treatment, and stirring for 20min to obtain an emulsion, wherein the volume ratio of the oil phase to the water phase is 1: 0.6;
SS3, heating the emulsion obtained in the last step in a water bath to 70 ℃, adding an ammonium persulfate initiator into the emulsion, heating for reaction for 4 hours, filtering, drying and drying to obtain modified glass beads;
SS4, preparing a sodium dodecyl benzene sulfonate aqueous solution with the mass concentration of 3%, heating in a water bath, keeping the temperature at 60 ℃, adding 0.4% of carbon nano tubes into the aqueous solution, performing ultrasonic dispersion treatment for 1 hour, maintaining ultrasonic treatment, adding the modified glass bead filler obtained by treatment in the step SS3 into the aqueous solution for 3 times, wherein the weight ratio of the modified glass bead filler to the carbon nano tubes is 15:1, continuing ultrasonic treatment for 40min after the modified glass beads are completely added into the aqueous solution, filtering, and drying at the temperature of 60 ℃ to obtain the modified filler;
and SS5, melting and mixing 90 parts by weight of polyethylene, 0.5 part by weight of antioxidant and 8 parts by weight of modified filler, and extruding to obtain the reinforced modified PE material.
Example 2
A PE high-pressure water supply pipe comprises an antibacterial inner pipe and a protective outer pipe coated on the surface of the antibacterial inner pipe, wherein the antibacterial inner pipe is made of an antibacterial modified PE material, and the protective outer pipe is made of a reinforced modified PE material;
the preparation method of the PE high-pressure water supply pipe comprises the following steps:
firstly, preparing an antibacterial modified PE material, adding the antibacterial modified PE material into an extruder, and extruding and molding to obtain an inner pipe;
and secondly, preparing a reinforced modified PE material, heating the inner pipe to the surface temperature of 60 ℃, coating the reinforced modified antibacterial material in a molten state on the surface of the inner pipe, and shaping to form the PE high-pressure water supply pipe.
The preparation method of the antibacterial modified PE material comprises the following steps:
s1, crushing and grinding zeolite until the particle size is smaller than 1 mu m, adding the crushed zeolite into deionized water, heating, boiling, filtering, drying, and roasting in a muffle furnace at the temperature of 400 ℃ for 2 hours;
s2, adding the zeolite obtained by the treatment in the step S1 into a zinc nitrate water solution, carrying out ultrasonic treatment for 15min, filtering, drying at 70 ℃ for 2h, and roasting at 450 ℃ for 2h to obtain an antibacterial zeolite filler;
s3, melting and mixing 90 parts by weight of polyethylene, 10 parts by weight of antibacterial zeolite filler, 5 parts by weight of polyethylene wax and 1.5 parts by weight of KH-570, and extruding to obtain the antibacterial modified PE material.
The preparation method of the reinforced modified PE material comprises the following steps:
SS1, preparing a sodium dodecyl sulfate aqueous solution with the mass concentration of 2%, heating in a water bath, keeping the temperature at 60 ℃, adding 9% of glass beads into the aqueous solution, keeping the temperature, stirring for 20min, filtering, taking out the glass beads, and drying for 20min at the temperature of 60 ℃;
and SS2, adding the treated glass bead intermediate into an oil phase, and uniformly mixing for later use, wherein the oil phase is prepared by mixing styrene and n-hexadecane according to a volume ratio of 1: 2, mixing the glass beads, wherein the mass fraction of the glass beads in the oil phase is 10%;
adding sodium dodecyl sulfate and sodium bicarbonate into deionized water to dissolve to obtain a water phase, wherein the mass concentration of the sodium dodecyl sulfate is 2%, the mass concentration of the sodium bicarbonate is 3%, adding an oil phase into the water phase, performing ultrasonic treatment, and stirring for 20min to obtain an emulsion, wherein the volume ratio of the oil phase to the water phase is 1: 0.6;
SS3, heating the emulsion obtained in the last step in a water bath to 70 ℃, adding an ammonium persulfate initiator into the emulsion, heating for reaction for 4 hours, filtering, drying and drying to obtain modified glass beads;
SS4, preparing a sodium dodecyl benzene sulfonate aqueous solution with the mass concentration of 3%, heating in a water bath, keeping the temperature at 60 ℃, adding 0.6 mass percent of carbon nano tubes into the aqueous solution, performing ultrasonic dispersion treatment for 2 hours, maintaining ultrasonic treatment, adding the modified glass bead filler obtained by the treatment in the step SS3 into the aqueous solution for 3 times, wherein the weight ratio of the modified glass bead filler to the carbon nano tubes is 15:1, continuing ultrasonic treatment for 40min after the modified glass beads are completely added into the aqueous solution, filtering, and drying at the temperature of 70 ℃ to obtain the modified filler;
and SS5, melting and mixing 90 parts by weight of polyethylene, 0.6 part by weight of antioxidant and 10 parts by weight of modified filler, and extruding to obtain the reinforced modified PE material.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (4)
1. A PE high-pressure water supply pipe is characterized by comprising an antibacterial inner pipe and a protective outer pipe coated on the surface of the antibacterial inner pipe, wherein the antibacterial inner pipe is made of an antibacterial modified PE material, and the protective outer pipe is made of a reinforced modified PE material;
the preparation method of the antibacterial modified PE material comprises the following steps:
s1, crushing and grinding the zeolite until the particle size is smaller than 1 mu m, adding the crushed zeolite into deionized water, heating, boiling, filtering, drying, and roasting in a muffle furnace at the temperature of 300-450 ℃ for 2-3 h;
s2, adding the zeolite obtained by the treatment in the step S1 into a zinc nitrate aqueous solution, carrying out ultrasonic treatment for 10-20min, drying for 1-3h at 60-90 ℃ after filtering, and roasting for 1.5-2h at 500 ℃ at 400-;
s3, melting and mixing 80-99 parts by weight of polyethylene, 1-15 parts by weight of antibacterial zeolite filler, 3-10 parts by weight of polyethylene wax and 0.5-2 parts by weight of KH-570, and extruding to obtain the antibacterial modified PE material.
2. A preparation method of a PE high-pressure water supply pipe is characterized by comprising the following steps:
firstly, preparing an antibacterial modified PE material, adding the antibacterial modified PE material into an extruder, and extruding and molding to obtain an inner pipe;
and secondly, preparing a reinforced modified PE material, heating the inner pipe to the surface temperature of 50-80 ℃, coating the reinforced modified antibacterial material in a molten state on the surface of the inner pipe, and shaping to form the PE high-pressure water supply pipe.
3. The method as claimed in claim 2, wherein the surface of the inner pipe has a screw structure.
4. The method as claimed in claim 2, wherein the reinforced modified PE material is prepared by:
SS1, preparing a sodium dodecyl sulfate aqueous solution with the mass concentration of 0.4-5%, heating in a water bath, keeping the temperature at 50-60 ℃, adding 7-12% of glass beads by mass into the aqueous solution, keeping the temperature, stirring for 10-30min, filtering, taking out the glass beads, and drying at the temperature of 50-70 ℃ for 10-30 min;
and SS2, adding the treated glass bead intermediate into an oil phase, and uniformly mixing for later use, wherein the oil phase is prepared by mixing styrene and n-hexadecane according to a volume ratio of 1: 1-3, wherein the mass fraction of the glass beads in the oil phase is 6% -13%;
adding sodium dodecyl sulfate and sodium bicarbonate into deionized water to dissolve to obtain a water phase, wherein the mass concentration of the sodium dodecyl sulfate is 1% -5%, the mass concentration of the sodium bicarbonate is 2% -4%, adding an oil phase into the water phase, performing ultrasonic treatment and stirring for 15-30min to obtain an emulsion, wherein the volume ratio of the oil phase to the water phase is 1: 0.4 to 1;
SS3, heating the emulsion obtained in the last step in a water bath to 70-75 ℃, adding an ammonium persulfate initiator into the emulsion, heating the mixture for reaction for 3.5-4.5 hours, filtering, drying and drying the mixture to obtain modified glass beads;
SS4, preparing a sodium dodecyl benzene sulfonate aqueous solution with the mass concentration of 0.4-5%, heating in a water bath, keeping the temperature at 50-60 ℃, adding 0.1-1% of carbon nano tubes by mass fraction, maintaining ultrasonic treatment after ultrasonic dispersion treatment for 0.5-3h, adding the modified glass bead filler obtained by treatment in the step SS3 for multiple times, wherein the weight ratio of the modified glass bead filler to the carbon nano tubes is 10-20:1, continuing ultrasonic treatment for 20-60min after the modified glass beads are completely added, filtering, and drying at the temperature of 50-90 ℃ to obtain the modified filler;
SS5, and melting and mixing 85-99 parts by weight of polyethylene, 0.3-1 part by weight of antioxidant and 1-15 parts by weight of modified filler, and extruding to obtain the reinforced modified PE material.
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Denomination of invention: A PE high-pressure water supply pipe and its preparation method Effective date of registration: 20231220 Granted publication date: 20211026 Pledgee: The development of small and medium-sized enterprises financing Company Limited by Guarantee Jieshou City Pledgor: Anhui Yingbiao New Materials Technology Co.,Ltd. Registration number: Y2023980072904 |