CN111347699A - Preparation method of PE water supply pipe - Google Patents
Preparation method of PE water supply pipe Download PDFInfo
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- CN111347699A CN111347699A CN202010142652.4A CN202010142652A CN111347699A CN 111347699 A CN111347699 A CN 111347699A CN 202010142652 A CN202010142652 A CN 202010142652A CN 111347699 A CN111347699 A CN 111347699A
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- supply pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
-
- 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
- C08K2003/0806—Silver
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- 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
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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
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a preparation method of a PE water supply pipe, which comprises the following steps: the polyethylene composition comprises polyethylene resin (PE), polyethylene wax (PE wax), nano carbon black, a metallocene catalyst, an antioxidant and a nano silver antibacterial agent, wherein the mass ratio of the polyethylene resin (PE) is 45%, the mass ratio of the polyethylene wax (PE wax) is 25%, the mass ratio of the nano carbon black is 20%, the mass ratio of the metallocene catalyst is 6%, and the mass ratio of the antioxidant is 3%. According to the preparation method of the PE water supply pipe, the metallocene catalyst and the nano-silver antibacterial agent are added into the formula raw materials of the PE pipe, so that the strength and rigidity of the finished PE pipe are improved, the processability is improved, and the problem of bacteria breeding on the wall of the PE pipe in the later stage is solved; in addition, by improving the production process of the PE pipe, a vacuum sizing device is added in the process and used for preliminarily cooling and sizing the PE pipe, and the regularity of the PE pipe is controlled more accurately.
Description
Technical Field
The invention relates to the field of PE water supply pipes, in particular to a preparation method of a PE water supply pipe.
Background
The PE water supply pipe is a pipe made of polyethylene resin (PE) serving as a main material, and the PE pipe becomes the best choice for the water supply pipe due to the advantages of impact resistance, aging resistance, corrosion resistance, wear resistance and the like, and is a replacement product of the traditional steel pipe and the traditional polyvinyl chloride drinking water pipe; however, the traditional PE pipe is made of a single material, so that bacteria are easy to remain on the pipe wall after the traditional PE pipe is used as a water supply pipe and is used for a long time, and the strength of the pipe is easy to reduce along with the lapse of time; in addition, the surface of the pipe is out of round and irregular easily in the traditional PE pipe production process, so that the quality of the whole pipe is affected.
Disclosure of Invention
The invention mainly aims to provide a preparation method of a PE water supply pipe, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a preparation method of a PE water supply pipe comprises the following steps: the polyethylene antibacterial agent comprises polyethylene resin (PE), polyethylene wax (PE wax), nano carbon black, a metallocene catalyst, an antioxidant and a nano silver antibacterial agent, wherein the mass ratio of the polyethylene resin (PE) is 45%, the mass ratio of the polyethylene wax (PE wax) is 25%, the mass ratio of the nano carbon black is 20%, the mass ratio of the metallocene catalyst is 6%, the mass ratio of the antioxidant is 3%, and the mass ratio of the nano silver antibacterial agent is 1%.
Preferably, the preparation method of the PE water supply pipe mainly comprises the following steps:
s1, mixing; adding the formula materials of the PE water supply pipe into a mixer in proportion, and stirring and mixing to obtain a uniform mixture;
s2, drying; sucking the obtained mixture into a drying device by using a material sucking machine for drying, taking out redundant water, and then conveying the dried material into a charging barrel for transferring;
s3, extrusion molding; the materials in the charging barrel enter an extruding machine through a blanking device to form a sizing material, and then the sizing material is extruded and formed;
s4, shaping; the molded PE pipe blank body enters a vacuum box for final sizing;
s5, cooling; the PE pipe with the determined size enters a cooling box for cooling;
s6, spraying a code; marking information such as parameters and the like on the cooled PE pipe by using an ink-jet printer;
s7, cutting; cutting the whole PE pipe into sections according to the specification by using a cutting machine;
s8, checking; and carrying out final quality specification inspection on the cut PE pipe.
Preferably, the mixer in the step S1 is a sealed high-speed mixer special for plastics.
Preferably, the suction machine in step S2 is mainly composed of a pipeline and an air pump, and is used for sucking the mixed material into the dryer, and then sucking the material into the material cylinder from the dryer, and the drying device is composed of a dehumidifier, a heater, and a drying box, the material is heated by the heater in the drying box to discharge moisture, and the air containing the moisture is discharged by the dehumidifier.
Preferably, in the step S3, the extruding machine is mainly divided into a cylinder, a screw, a machine head and a mold, the dried material firstly enters the cylinder to be crushed, softened, melted and plasticized to obtain a sizing material, a transmission system of the extruding machine drives the screw to convey the sizing material to the machine head, and the sizing material is extruded under the action of the mold to obtain a molded PE tube blank, and in the process, a heating and cooling system of the extruding machine regulates and controls the temperature of the sizing material in real time according to the temperature of the PE tube blank during extrusion.
Preferably, in the step S4, the PE pipe blank enters the vacuum box by means of the traction force of the rear section to perform preliminary cooling and shaping, and the vacuum environment of the vacuum box is used to ensure that the PE pipe obtains a more accurate outer diameter dimension and improve the roundness of the pipe surface.
Preferably, the cooling box in step S5 is a water-cooling spray cooling box, and the PE pipe subjected to preliminary cooling and sizing is finally cooled and shaped, and then cooled to a room temperature state.
Preferably, in step S6, the PE pipe is pulled by a tractor through a laser inkjet printer, various product information is sprayed on the PE pipe body by the laser inkjet printer, and the interval between each two pieces of code information is kept at 1.5 meters.
Preferably, the cutting machine in the step S7 is a pipe ring cutting machine, so as to ensure the smoothness of the cut.
Preferably, in the step S8, quality inspection is performed on the finished PE pipe by using a self-inspection and manual sampling inspection mode, and if the finished PE pipe is qualified, the finished PE pipe is packaged and put in storage; and if the PE pipe is not qualified, picking out the PE pipe, and crushing and recycling the PE pipe after the PE pipe is centralized.
Compared with the prior art, the preparation method of the PE water supply pipe has the advantages that the metallocene catalyst and the nano-silver antibacterial agent are added into the formula raw materials of the PE pipe, so that the strength and rigidity of the finished PE pipe are further improved by utilizing the metallocene catalyst, and the processing performance is improved; the problem of bacteria breeding at the later stage of the wall of the PE pipe is solved by using the antibacterial agent containing nano silver; in addition, by improving the production process of the PE pipe, a vacuum sizing device is added in the process and used for preliminarily cooling and sizing the PE pipe, and the regularity of the PE pipe is controlled more accurately.
Drawings
FIG. 1 is a flow chart of a preparation process of a PE water supply pipe according to the invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
A preparation method of a PE water supply pipe comprises the following steps: the antibacterial agent comprises polyethylene resin (PE), polyethylene wax (PE wax), nano carbon black, a metallocene catalyst, an antioxidant and a nano silver antibacterial agent, wherein the mass ratio of the polyethylene resin (PE) is 45%, the mass ratio of the polyethylene wax (PE wax) is 25%, the mass ratio of the nano carbon black is 20%, the mass ratio of the metallocene catalyst is 6%, the mass ratio of the antioxidant is 3%, and the mass ratio of the nano silver antibacterial agent is 1%;
as shown in FIG. 1, the preparation method of the PE water supply pipe mainly comprises the following steps:
s1, mixing; adding the formula materials of the PE water supply pipe into a mixer in proportion, and stirring and mixing to obtain a uniform mixture;
s2, drying; sucking the obtained mixture into a drying device by using a material sucking machine for drying, taking out redundant water, and then conveying the dried material into a charging barrel for transferring;
s3, extrusion molding; the materials in the charging barrel enter an extruding machine through a blanking device to form a sizing material, and then the sizing material is extruded and formed;
s4, shaping; the molded PE pipe blank body enters a vacuum box for final sizing;
s5, cooling; the PE pipe with the determined size enters a cooling box for cooling;
s6, spraying a code; marking information such as parameters and the like on the cooled PE pipe by using an ink-jet printer;
s7, cutting; cutting the whole PE pipe into sections according to the specification by using a cutting machine;
s8, checking; and carrying out final quality specification inspection on the cut PE pipe.
The mixer in the step S1 is a sealed special high-speed mixer for plastics; the suction machine in the step S2 is mainly composed of a pipeline and an air pump, and is used for sucking the mixed materials into the dryer, then sucking the materials into the material cylinder from the dryer, the drying equipment is composed of a dehumidifier, a heater and a drying box, the materials are heated in the drying box through the heater to discharge moisture, and the air containing the moisture is discharged from the dehumidifier; in the step S3, the extruding machine is mainly divided into a machine barrel, a screw, a machine head and a mold, dried materials firstly enter the machine barrel to be crushed, softened, melted and plasticized to obtain rubber materials, a transmission system of the extruding machine drives the screw to convey the rubber materials to the machine head, and the rubber materials are extruded under the action of the mold to obtain a formed PE tube blank body, and in the process, a heating and cooling system of the extruding machine regulates and controls the temperature of the rubber materials in real time according to the temperature of the PE tube blank body during extrusion; in the step S4, the PE tube blank enters a vacuum box for primary cooling and shaping by means of the traction force of the rear section, the vacuum environment of the vacuum box is utilized to ensure that the PE tube obtains a more accurate outer diameter size, and the roundness of the surface of the tube is improved; the cooling box in the step S5 is a water-cooling spraying cooling box, the PE pipe which is primarily cooled and sized is finally cooled and sized, and the PE pipe is cooled to the room temperature state; in the step S6, the PE pipe is pulled by a tractor to pass through a laser code spraying machine, various product information is sprayed on the PE pipe body by the laser code spraying machine, and the interval of each section of code spraying information is kept to be 1.5 meters; the cutting machine in the step S7 is a pipe ring cutting machine, so that the smoothness of the cut is ensured; in the step S8, quality inspection is carried out on the finished PE pipe by using a self-inspection and manual sampling inspection mode, and if the finished PE pipe is qualified, the PE pipe is packaged and put in storage; and if the PE pipe is not qualified, picking out the PE pipe, and crushing and recycling the PE pipe after the PE pipe is centralized.
The invention is a preparation method of a PE water supply pipe, which comprises adding metallocene catalyst and nano silver antibacterial agent into the raw materials of the PE pipe, and reacting metallocene catalyst with polyethylene resin to produce polymer: compared with the traditional polyethylene polymer, the metallocene polyethylene has good processing performance, high strength and good rigidity, and the performances of temperature resistance, chemical resistance and the like are obviously improved, so that the service life and the use safety of the PE water supply pipe are improved, the antibacterial agent added with nano silver is mixed in the PE pipe, and the excellent bactericidal property of the silver is utilized to prevent the PE water supply pipe from being attached to the pipe wall to breed bacteria after being used for a long time; in addition, through improving the production process flow, a vacuum box is arranged between the extrusion process and the cooling process and serves as a primary cooling and shaping device, the principle that objects are not affected by gravity under the vacuum environment is utilized, the PE pipe extruded by the plastic extruding machine in the forming process is subjected to primary cooling under the vacuum environment, the PE pipe which is completely shaped in the cooling process cannot droop due to gravity, the roundness and the outer diameter of the surface of the PE pipe are guaranteed not to change, and the accuracy of the size of the PE pipe is improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A preparation method of a PE water supply pipe is characterized by comprising the following steps: the PE water supply pipe comprises the following materials: the polyethylene antibacterial agent comprises polyethylene resin (PE), polyethylene wax (PE wax), nano carbon black, a metallocene catalyst, an antioxidant and a nano silver antibacterial agent, wherein the mass ratio of the polyethylene resin (PE) is 45%, the mass ratio of the polyethylene wax (PE wax) is 25%, the mass ratio of the nano carbon black is 20%, the mass ratio of the metallocene catalyst is 6%, the mass ratio of the antioxidant is 3%, and the mass ratio of the nano silver antibacterial agent is 1%.
2. The method for preparing a PE water supply pipe according to claim 1, wherein the method comprises the following steps: the method mainly comprises the following steps:
s1, mixing; adding the formula materials of the PE water supply pipe into a mixer in proportion, and stirring and mixing to obtain a uniform mixture;
s2, drying; sucking the obtained mixture into a drying device by using a material sucking machine for drying, taking out redundant water, and then conveying the dried material into a charging barrel for transferring;
s3, extrusion molding; the materials in the charging barrel enter an extruding machine through a blanking device to form a sizing material, and then the sizing material is extruded and formed;
s4, shaping; the molded PE pipe blank body enters a vacuum box for final sizing;
s5, cooling; the PE pipe with the determined size enters a cooling box for cooling;
s6, spraying a code; marking information such as parameters and the like on the cooled PE pipe by using an ink-jet printer;
s7, cutting; cutting the whole PE pipe into sections according to the specification by using a cutting machine;
s8, checking; and carrying out final quality specification inspection on the cut PE pipe.
3. The method for preparing a PE water supply pipe according to claim 2, wherein the method comprises the following steps: the mixer in the step S1 is a sealed high-speed mixer special for plastics.
4. The method for preparing a PE water supply pipe according to claim 3, wherein the method comprises the following steps: the suction machine in the step S2 is mainly composed of a pipeline and an air pump, and is used for sucking the mixed material into the dryer, and then sucking the material into the material cylinder from the dryer, while the drying device is composed of a dehumidifier, a heater and a drying box, the material is heated by the heater in the drying box to discharge moisture, and the air containing the moisture is discharged by the dehumidifier.
5. The method for preparing the PE water supply pipe according to claim 4, wherein the method comprises the following steps: in the step S3, the extruding machine is mainly divided into a machine barrel, a screw, a machine head and a mold, dried materials firstly enter the machine barrel to be crushed, softened, melted and plasticized to obtain rubber materials, a transmission system of the extruding machine drives the screw to convey the rubber materials to the machine head, and the rubber materials are extruded under the action of the mold to obtain a molded PE tube blank, and in the process, a heating and cooling system of the extruding machine regulates and controls the temperature of the rubber materials in real time according to the temperature of the PE tube blank during extrusion.
6. The method for preparing the PE water supply pipe according to claim 5, wherein the method comprises the following steps: and in the step S4, the PE tube blank enters the vacuum box for primary cooling and shaping by means of the traction force of the rear section, the vacuum environment of the vacuum box is utilized to ensure that the PE tube obtains a more accurate outer diameter size, and the roundness of the surface of the tube is improved.
7. The method for preparing the PE water supply pipe according to claim 6, wherein the method comprises the following steps: and the cooling box in the step S5 is a water-cooling spraying cooling box, and the PE pipe subjected to primary cooling and sizing is subjected to final cooling and sizing, and is cooled to a room temperature state.
8. The method for preparing a PE water supply pipe according to claim 7, wherein the method comprises the following steps: in the step S6, the PE pipe is pulled by a tractor through a laser inkjet printer, various product information is sprayed on the PE pipe body by the laser inkjet printer, and the interval between each section of code information is kept at 1.5 m.
9. The method for preparing a PE water supply pipe according to claim 8, wherein the method comprises the following steps: the cutting machine in the step S7 is a pipe ring cutting machine, and the smoothness of the cut is guaranteed.
10. The method of claim 9, wherein the method comprises the steps of: in the step S8, quality inspection is performed on the finished PE pipe by using a self-inspection and manual sampling inspection mode, and if the inspection is qualified, the PE pipe is packed and put in storage; and if the PE pipe is not qualified, picking out the PE pipe, and crushing and recycling the PE pipe after the PE pipe is centralized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010142652.4A CN111347699A (en) | 2020-03-04 | 2020-03-04 | Preparation method of PE water supply pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010142652.4A CN111347699A (en) | 2020-03-04 | 2020-03-04 | Preparation method of PE water supply pipe |
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| CN111347699A true CN111347699A (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010142652.4A Pending CN111347699A (en) | 2020-03-04 | 2020-03-04 | Preparation method of PE water supply pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292779A (en) * | 2021-07-03 | 2021-08-24 | 嘉兴正通塑业科技有限公司 | Modified PE pipe for water supply and manufacturing method thereof |
| CN114559689A (en) * | 2022-02-21 | 2022-05-31 | 浙江海祖管业有限公司 | Preparation process of anti-aging antibacterial nano composite PE (polyethylene) water supply and drainage pipe |
-
2020
- 2020-03-04 CN CN202010142652.4A patent/CN111347699A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292779A (en) * | 2021-07-03 | 2021-08-24 | 嘉兴正通塑业科技有限公司 | Modified PE pipe for water supply and manufacturing method thereof |
| CN114559689A (en) * | 2022-02-21 | 2022-05-31 | 浙江海祖管业有限公司 | Preparation process of anti-aging antibacterial nano composite PE (polyethylene) water supply and drainage pipe |
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