CN111561616B - High-pressure-resistant PE drain pipe and preparation method thereof - Google Patents
High-pressure-resistant PE drain pipe and preparation method thereof Download PDFInfo
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- CN111561616B CN111561616B CN202010430767.3A CN202010430767A CN111561616B CN 111561616 B CN111561616 B CN 111561616B CN 202010430767 A CN202010430767 A CN 202010430767A CN 111561616 B CN111561616 B CN 111561616B
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- 238000002360 preparation method Methods 0.000 title claims description 9
- 239000004698 Polyethylene Substances 0.000 claims abstract description 73
- -1 polyethylene Polymers 0.000 claims abstract description 58
- 229920000573 polyethylene Polymers 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 57
- 238000001125 extrusion Methods 0.000 claims abstract description 55
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 18
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 9
- 239000003963 antioxidant agent Substances 0.000 claims description 8
- 230000003078 antioxidant effect Effects 0.000 claims description 8
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 6
- 239000004611 light stabiliser Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 230000000694 effects Effects 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
- 239000002131 composite material Substances 0.000 description 2
- 238000013329 compounding Methods 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
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 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
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Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/89—Internal treatment, e.g. by applying an internal cooling fluid stream
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
-
- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Dispersion Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a high-pressure-resistant PE drain pipe, which comprises an inner pipe and an outer pipe coated on the inner pipe, wherein the inner pipe is prepared by processing an antibacterial polyethylene material, and the outer pipe is prepared by processing an anti-aging polyethylene material; when the double-layer pipe extrusion device is used for processing a high-pressure-resistant drain pipe, an antibacterial polyethylene material enters the inner pipe extrusion device through the inner layer feed port, an anti-aging polyethylene material enters the outer pipe extrusion device through the outer layer feed port, the screw feed rod is driven to rotate by the driving motor, the antibacterial polyethylene material in the inner pipe extrusion device is extruded to form an inner pipe, the anti-aging polyethylene material is compounded on the surface of the inner pipe to form an outer pipe, and meanwhile, low-temperature air is input into the gas transmission pipeline through the air refrigerator in the production process to improve the cooling speed of the inner layer of the inner pipe.
Description
Technical Field
The invention belongs to the technical field of water delivery pipes, and particularly relates to a high-pressure-resistant PE drain 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.
Because of the excellent properties of polyethylene materials, the polyethylene materials are widely applied to water pipelines instead of most metal pipelines at present, wherein when the polyethylene materials are used as drainage pipes, most of the water is drained, the water is relatively high in temperature and corrosivity and the laying environment is relatively severe, in the prior art, in order to ensure that the pipelines have various good performances, a plurality of materials are generally adopted to carry out composite treatment, so that the pipelines have a multilayer structure, but in the actual use process, the adjacent two layers of materials are easily layered under the influence of temperature and external pressure, and the properties of the pipelines are further influenced, and when the pipelines with the multilayer structure are produced, the pipelines at the inner layer are heated to a certain temperature and then covered with a layer of other materials on the surface, so that the outer layer of the pipelines is formed, on the one hand, the inner pipe needs to be heated by additional energy consumption, on the other hand, the efficiency of industrial production is reduced by forming for multiple times, and in order to solve the problems, the invention provides the following technical scheme.
Disclosure of Invention
The invention aims to provide a high-pressure-resistant PE drain pipe and a preparation method thereof.
The technical problems to be solved by the invention are as follows:
in the prior art, in order to ensure that the pipeline has multiple good performances, multiple materials are generally adopted to carry out composite processing, so that the pipeline has a multilayer structure, but in the actual use process, the pipeline is influenced by temperature and external pressure, layering easily occurs between two adjacent layers of materials, and the property of the pipeline is further influenced.
The purpose of the invention can be realized by the following technical scheme:
a high-pressure-resistant PE drain pipe comprises an inner pipe and an outer pipe coated on the inner pipe, wherein the inner pipe is made of an antibacterial polyethylene material, and the outer pipe is made of an anti-aging polyethylene material;
as a further scheme of the invention, the preparation method of the high-pressure-resistant PE drain pipe comprises the following steps:
step one, uniformly mixing 85-95 parts by weight of polyethylene, 1-10 parts by weight of antibacterial filler and 0.2-0.6 part by weight of antioxidant, and heating and melting to obtain an antibacterial polyethylene material for later use;
step two, uniformly mixing 90-95 parts by weight of polyethylene, 0.5-2.5 parts by weight of aluminum powder, 0.5-2.5 parts by weight of carbon black, 0.1-0.4 part by weight of antioxidant and 0.2-0.5 part by weight of light stabilizer, and heating and melting to obtain an anti-aging polyethylene material for later use;
and step three, adding the antibacterial polyethylene material and the anti-aging polyethylene material into a double-layer pipe extrusion device, specifically, the antibacterial polyethylene material enters an inner pipe extrusion device through an inner layer feed port, the anti-aging polyethylene material enters an outer pipe extrusion device through an outer layer feed port, a screw feed rod is driven to rotate through a driving motor, the antibacterial polyethylene material in the inner pipe extrusion device is extruded to form an inner pipe, the inner pipe is cooled through an air blower, the surface temperature of the inner pipe reaches 60-90 ℃ when the inner pipe enters the outer pipe extrusion device, the anti-aging polyethylene material is compounded on the surface of the inner pipe to form an outer pipe, and meanwhile, in the production process, low-temperature air is input into a gas transmission pipeline through an air refrigerator.
As a further scheme of the invention, the preparation method of the antibacterial filler comprises the following steps:
s1, adding montmorillonite into deionized water, soaking for 16-24h, boiling upper layer colloid in water, standing, cooling, removing bottom sediment, adding sodium bicarbonate into the suspension, heating to 40-60 ℃, stirring for reaction for 30-40min, filtering, drying, and pulverizing to obtain sodium montmorillonite;
s2, adding the sodium montmorillonite prepared in the step S1 into a zinc nitrate water solution, carrying out ultrasonic treatment for 10-20min, drying at 60-90 ℃ for 4-5h after filtering, and roasting at 400-500 ℃ for 1.5-2h to obtain the antibacterial montmorillonite;
s3, preparing a hexadecyl trimethyl ammonium bromide aqueous solution with the mass concentration of 2% -7%, adding the antibacterial montmorillonite prepared in the step S2, heating to 40-60 ℃, stirring for reacting for 30-40min, filtering, drying and crushing to obtain the antibacterial filler.
As a further scheme of the invention, the double-layer pipe extrusion device comprises an inner pipe extrusion device and an outer pipe extrusion device, the inner pipe extrusion device comprises a first feeding pipe, a first compression pipe and a first discharge forming pipe, one end of the first feeding pipe is fixedly provided with a sealing cover plate, the sealing cover plate is rotatably sleeved on a spiral feeding rod through a bearing, a part of the spiral feeding rod with a spiral blade is positioned in the first feeding pipe, one end of the spiral feeding rod is fixedly sleeved with a driving wheel, the driving wheel is connected with a shaft extension of a driving motor through a belt, and the spiral feeding rod is driven to rotate through the driving motor;
the first compression pipe is of a funnel-shaped structure, one end with the large diameter of the first compression pipe is connected with one end of the first feeding pipe, and one end with the small diameter of the first compression pipe is connected with one end of the first discharging forming pipe;
the side wall of the first feeding pipe is connected with an inner layer feeding hole;
the spiral feeding rod is of a hollow tubular structure, the spiral feeding rod is fixedly sleeved on the gas transmission pipeline, the gas transmission pipeline is a hollow round pipe with openings at two ends, one opening end of the gas transmission pipeline is positioned outside the inner pipe extrusion device and the outer pipe extrusion device, and one opening end of the gas transmission pipeline is connected with the air refrigerator through a mechanical sealing structure;
the diameter of the gas transmission pipeline is the inner diameter of the produced pipeline;
the outer pipe extrusion device comprises a second feeding pipe, a second compression pipe and a second discharge forming pipe, a sealing baffle is fixedly arranged at one end of the second feeding pipe, the sealing baffle is an annular plate, the inner ring diameter of the sealing baffle is larger than or equal to the outer diameter of the inner pipe, and a plurality of outer layer feeding holes are circumferentially arranged on the side wall of the second feeding pipe;
the second compression pipe is of a funnel-shaped structure, one end of the second compression pipe with a large diameter is connected with one end of the second feeding pipe, and one end of the second compression pipe with a small diameter is connected with one end of the second discharging forming pipe.
As a further scheme of the invention, a plurality of bulges are arranged on the inner wall of the first discharging forming pipe.
As a further scheme of the invention, an insulating layer is arranged between the outer wall of the gas transmission pipeline and the inner wall of the spiral feeding rod.
As a further scheme of the invention, a temperature measuring device and a blower are arranged between the inner pipe extrusion device and the outer pipe extrusion device, and the temperature measuring device is used for detecting the temperature of the surface of the inner pipe.
The invention has the beneficial effects that:
when the double-layer pipe extrusion device is used for processing a high-pressure-resistant drain pipe, an antibacterial polyethylene material enters the inner pipe extrusion device through the inner layer feed port, an anti-aging polyethylene material enters the outer pipe extrusion device through the outer layer feed port, the screw feed rod is driven to rotate by the driving motor, the antibacterial polyethylene material in the inner pipe extrusion device is extruded to form an inner pipe, a plurality of bulges are arranged on the inner wall of the first discharge forming pipe, when the formed inner pipe passes through the first discharge forming pipe, scratches can be formed on the surface of the inner pipe, the combination effect of the inner pipe and the outer pipe is improved, the inner pipe is cooled by adjusting the power of the air blower according to the surface temperature of the inner pipe, the surface temperature of the inner pipe can reach 60-90 ℃ when the inner pipe enters the outer pipe extrusion device, the outer pipe is formed by compounding the anti-aging polyethylene material on the surface of the inner pipe, and meanwhile in the production process, the low-temperature air is input into the gas transmission pipeline through the air refrigerator, so that the cooling speed of the inner layer of the inner pipe is improved, and meanwhile, the situation that the gas transmission pipeline is in a high-temperature state for a long time and the gas transmission pipeline is difficult to separate from a molten polyethylene material can be avoided.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
FIG. 1 is a schematic view of a double-tube extrusion apparatus.
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.
A high-pressure-resistant PE drain pipe comprises an inner pipe and an outer pipe coated on the inner pipe, wherein the inner pipe is made of an antibacterial polyethylene material, and the outer pipe is made of an anti-aging polyethylene material;
the preparation method of the high-pressure-resistant PE drain pipe comprises the following steps:
step one, uniformly mixing 85-95 parts by weight of polyethylene, 1-10 parts by weight of antibacterial filler and 0.2-0.6 part by weight of antioxidant, and heating and melting to obtain an antibacterial polyethylene material for later use;
step two, uniformly mixing 90-95 parts by weight of polyethylene, 0.5-2.5 parts by weight of aluminum powder, 0.5-2.5 parts by weight of carbon black, 0.1-0.4 part by weight of antioxidant and 0.2-0.5 part by weight of light stabilizer, and heating and melting to obtain an anti-aging polyethylene material for later use;
in one embodiment of the invention, the antioxidant in step one and step two is antioxidant AT1010, and the light stabilizer is light stabilizer 5050H;
adding the antibacterial polyethylene material and the anti-aging polyethylene material into a double-layer pipe extrusion device, specifically, the antibacterial polyethylene material enters an inner pipe extrusion device 1 through an inner layer feed port 14, the anti-aging polyethylene material enters an outer pipe extrusion device 2 through an outer layer feed port 25, a screw feed rod 15 is driven to rotate through a driving motor, the antibacterial polyethylene material in the inner pipe extrusion device 1 is extruded to form an inner pipe, the inner pipe is cooled by adjusting the power of an air blower according to the surface temperature of the inner pipe, so that the surface temperature of the inner pipe can reach 60-90 ℃ when the inner pipe enters the outer pipe extrusion device 2, the anti-aging polyethylene material is compounded on the surface of the inner pipe to form an outer pipe, meanwhile, in the production process, low-temperature air is input into a gas transmission pipeline 18 through an air refrigerator, the cooling speed of the inner layer of the inner pipe is increased, and meanwhile, the gas transmission pipeline 18 can be prevented from being in a high-temperature state for a long time, the gas line 18 is difficult to separate from the molten polyethylene material.
The preparation method of the antibacterial filler comprises the following steps:
s1, adding montmorillonite into deionized water, soaking for 16-24h, boiling upper layer colloid in water, standing, cooling, removing bottom sediment, adding sodium bicarbonate into the suspension, heating to 40-60 ℃, stirring for reaction for 30-40min, filtering, drying, and pulverizing to obtain sodium montmorillonite;
s2, adding the sodium montmorillonite prepared in the step S1 into a zinc nitrate water solution, carrying out ultrasonic treatment for 10-20min, drying at 60-90 ℃ for 4-5h after filtering, and roasting at 400-500 ℃ for 1.5-2h to obtain the antibacterial montmorillonite;
s3, preparing a hexadecyl trimethyl ammonium bromide aqueous solution with the mass concentration of 2% -7%, adding the antibacterial montmorillonite prepared in the step S2, heating to 40-60 ℃, stirring for reaction for 30-40min, filtering, drying and crushing to obtain an antibacterial filler;
as shown in fig. 1, the double-layer pipe extrusion device comprises an inner pipe extrusion device 1 and an outer pipe extrusion device 2, the inner pipe extrusion device 1 comprises a first feeding pipe 11, a first compression pipe 12 and a first discharge forming pipe 13, one end of the first feeding pipe 11 is fixedly provided with a sealing cover plate 19, the sealing cover plate 19 is rotatably sleeved on a spiral feeding rod 15 through a bearing, a part of the spiral feeding rod 15 with a spiral blade is positioned in the first feeding pipe 11, one end of the spiral feeding rod 15 is fixedly sleeved with a driving wheel 17, the driving wheel 17 is connected with an axial extension of a driving motor through a belt, and the spiral feeding rod 15 can be driven to rotate through the driving motor;
the first compression pipe 12 is of a funnel-shaped structure, one end with a large diameter of the first compression pipe 12 is connected with one end of the first feeding pipe 11, and one end with a small diameter of the first compression pipe 12 is connected with one end of the first discharging forming pipe 13;
an inner layer feeding hole 14 is connected to the side wall of the first feeding pipe 11, the molten inner pipe material is input into the first feeding pipe 11 through the inner layer feeding hole 14, and then the molten inner pipe material is extruded and molded from the pipe orifice of the first discharging and molding pipe 13 through a spiral feeding rod 15, so that an inner pipe is obtained;
a plurality of bulges are arranged on the inner wall of the first discharging forming pipe 13, when the formed inner pipe passes through the first discharging forming pipe 13, scratches are formed on the surface of the inner pipe, and the combination effect of the inner pipe and the outer pipe is improved;
the spiral feeding rod 15 is of a hollow tubular structure, the spiral feeding rod 15 is fixedly sleeved on the gas transmission pipeline 18, a heat insulation layer is arranged between the outer wall of the gas transmission pipeline 18 and the inner wall of the spiral feeding rod 15, heat exchange between the gas transmission pipeline 18 and the spiral feeding rod 15 is reduced, the gas transmission pipeline 18 is a hollow round pipe with openings at two ends, one opening end of the gas transmission pipeline 18 is positioned outside the inner pipe extrusion device 1 and the outer pipe extrusion device 2, and one opening end of the gas transmission pipeline 18 is connected with an air refrigerator through a mechanical sealing structure;
the diameter of the gas transmission pipeline 18 is the inner diameter of the produced pipeline;
the outer pipe extrusion device 2 comprises a second feeding pipe 21, a second compression pipe 22 and a second discharge forming pipe 23, wherein a sealing baffle 24 is fixedly arranged at one end of the second feeding pipe 21, the sealing baffle 24 is an annular plate, the inner ring diameter of the sealing baffle 24 is larger than or equal to the outer diameter of the inner pipe, and a plurality of outer layer feeding holes 25 are circumferentially arranged on the side wall of the second feeding pipe 21;
the second compression pipe 22 is of a funnel-shaped structure, one end with a large diameter of the second compression pipe 22 is connected with one end of the second feeding pipe 21, and one end with a small diameter of the second compression pipe 22 is connected with one end of the second discharging forming pipe 23;
a temperature measuring device and an air blower are arranged between the inner pipe extrusion device 1 and the outer pipe extrusion device 2, the temperature measuring device is used for detecting the temperature of the surface of the inner pipe, in one embodiment of the invention, the temperature measuring device is an infrared temperature measuring device, and the air blower is used for cooling the surface of the inner pipe.
When the double-layer pipe extrusion device is used for processing a high-pressure-resistant drain pipe, an antibacterial polyethylene material enters the inner pipe extrusion device 1 through the inner layer feed port 14, an anti-aging polyethylene material enters the outer pipe extrusion device 2 through the outer layer feed port 25, the screw feed rod 15 is driven to rotate through the driving motor, the antibacterial polyethylene material in the inner pipe extrusion device 1 is extruded to form an inner pipe, a plurality of bulges are arranged on the inner wall of the first discharge forming pipe 13, when the formed inner pipe passes through the first discharge forming pipe 13, scratches are formed on the surface of the inner pipe, the combination effect of the inner pipe and the outer pipe is improved, the inner pipe is cooled by adjusting the power of the air blower according to the surface temperature of the inner pipe, when the inner pipe enters the outer pipe extrusion device 2, the surface temperature of the inner pipe can reach 60-90 ℃, and the outer pipe is formed by compounding the anti-aging polyethylene material on the surface of the inner pipe, meanwhile, in the production process, low-temperature air is input into the gas transmission pipeline 18 through the air refrigerator, the cooling speed of the inner layer of the inner pipe is increased, and meanwhile, the condition that the gas transmission pipeline 18 is in a high-temperature state for a long time and the gas transmission pipeline 18 is difficult to separate from molten polyethylene materials can be avoided.
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 (5)
1. The high-pressure-resistant PE drain pipe is characterized by comprising an inner pipe and an outer pipe coated on the inner pipe, wherein the inner pipe is prepared by processing an antibacterial polyethylene material, and the outer pipe is prepared by processing an anti-aging polyethylene material;
the preparation method of the high-pressure-resistant PE drain pipe comprises the following steps:
step one, uniformly mixing 85-95 parts by weight of polyethylene, 1-10 parts by weight of antibacterial filler and 0.2-0.6 part by weight of antioxidant, and heating and melting to obtain an antibacterial polyethylene material for later use;
step two, uniformly mixing 90-95 parts by weight of polyethylene, 0.5-2.5 parts by weight of aluminum powder, 0.5-2.5 parts by weight of carbon black, 0.1-0.4 part by weight of antioxidant and 0.2-0.5 part by weight of light stabilizer, and heating and melting to obtain an anti-aging polyethylene material for later use;
adding an antibacterial polyethylene material and an anti-aging polyethylene material into a double-layer pipe extrusion device, specifically, the antibacterial polyethylene material enters an inner pipe extrusion device (1) through an inner layer feed port (14), the anti-aging polyethylene material enters an outer pipe extrusion device (2) through an outer layer feed port (25), a screw feed rod (15) is driven to rotate through a driving motor, the antibacterial polyethylene material in the inner pipe extrusion device (1) is extruded to form an inner pipe, the inner pipe is cooled through an air blower, the surface temperature of the inner pipe reaches 60-90 ℃ when the inner pipe enters the outer pipe extrusion device (2), the anti-aging polyethylene material is compounded on the surface of the inner pipe to form an outer pipe, and meanwhile, in the production process, low-temperature air is input into a gas transmission pipeline (18) through an air refrigerator;
the double-layer pipe extrusion device comprises an inner pipe extrusion device (1) and an outer pipe extrusion device (2), the inner pipe extrusion device (1) comprises a first feeding pipe (11), a first compression pipe (12) and a first discharging forming pipe (13), one end of the first feeding pipe (11) is fixedly provided with a sealing cover plate (19), the sealing cover plate (19) is rotatably sleeved on a spiral feeding rod (15) through a bearing, the part of the spiral feeding rod (15) with a spiral blade is positioned in the first feeding pipe (11), one end of the spiral feeding rod (15) is fixedly sleeved with a driving wheel (17), the driving wheel (17) is connected with a shaft extension of a driving motor through a belt, and the spiral feeding rod (15) is driven to rotate through the driving motor;
the first compression pipe (12) is of a funnel-shaped structure, one large-diameter end of the first compression pipe (12) is connected with one end of the first feeding pipe (11), and one small-diameter end of the first compression pipe (12) is connected with one end of the first discharging forming pipe (13);
the side wall of the first feeding pipe (11) is connected with an inner layer feeding hole (14);
the spiral feeding rod (15) is of a hollow tubular structure, the spiral feeding rod (15) is fixedly sleeved on the gas transmission pipeline (18), the gas transmission pipeline (18) is a hollow round pipe with openings at two ends, one opening end of the gas transmission pipeline (18) is positioned outside the inner pipe extrusion device (1) and the outer pipe extrusion device (2), and one opening end of the gas transmission pipeline (18) is connected with an air refrigerator through a mechanical sealing structure;
the diameter of the gas transmission pipeline (18) is the inner diameter of the produced pipeline;
the outer pipe extrusion device (2) comprises a second feeding pipe (21), a second compression pipe (22) and a second discharge forming pipe (23), a sealing baffle (24) is fixedly arranged at one end of the second feeding pipe (21), the sealing baffle (24) is an annular plate, the diameter of an inner ring of the sealing baffle (24) is larger than or equal to the outer diameter of an inner pipe, and a plurality of outer layer feeding holes (25) are formed in the side wall of the second feeding pipe (21) along the circumferential direction;
the second compression pipe (22) is of a funnel-shaped structure, one end of the second compression pipe (22) with the large diameter is connected with one end of the second feeding pipe (21), and one end of the second compression pipe (22) with the small diameter is connected with one end of the second discharging forming pipe (23).
2. The high pressure resistant PE drain pipe according to claim 1, wherein the antibacterial filler is prepared by a method comprising the following steps:
s1, adding montmorillonite into deionized water, soaking for 16-24h, boiling upper layer colloid in water, standing, cooling, removing bottom sediment, adding sodium bicarbonate into the suspension, heating to 40-60 ℃, stirring for reaction for 30-40min, filtering, drying, and pulverizing to obtain sodium montmorillonite;
s2, adding the sodium montmorillonite prepared in the step S1 into a zinc nitrate water solution, carrying out ultrasonic treatment for 10-20min, drying at 60-90 ℃ for 4-5h after filtering, and roasting at 400-500 ℃ for 1.5-2h to obtain the antibacterial montmorillonite;
s3, preparing a hexadecyl trimethyl ammonium bromide aqueous solution with the mass concentration of 2% -7%, adding the antibacterial montmorillonite prepared in the step S2, heating to 40-60 ℃, stirring for reacting for 30-40min, filtering, drying and crushing to obtain the antibacterial filler.
3. The PE drain pipe with high pressure resistance according to claim 1, wherein a plurality of protrusions are arranged on the inner wall of the first discharging forming pipe (13).
4. The high pressure resistant PE drain pipe according to claim 1, wherein an insulating layer is arranged between the outer wall of the gas transmission pipeline (18) and the inner wall of the spiral feeding rod (15).
5. The PE drain pipe with high pressure resistance according to claim 1, wherein a temperature measuring device and a blower are arranged between the inner pipe extruding device (1) and the outer pipe extruding device (2), and the temperature measuring device is used for detecting the temperature of the surface of the inner pipe.
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Denomination of invention: A high-pressure resistant PE drainage pipe and its preparation method Effective date of registration: 20231220 Granted publication date: 20210727 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 |
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