CN111634037A - Preparation method of HDPE double-wall corrugated pipe - Google Patents
Preparation method of HDPE double-wall corrugated pipe Download PDFInfo
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- CN111634037A CN111634037A CN202010528685.2A CN202010528685A CN111634037A CN 111634037 A CN111634037 A CN 111634037A CN 202010528685 A CN202010528685 A CN 202010528685A CN 111634037 A CN111634037 A CN 111634037A
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- corrugated pipe
- hdpe double
- wall corrugated
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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
- B29D23/18—Pleated or corrugated hoses
-
- 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
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
- B29K2023/0608—PE, i.e. polyethylene characterised by its density
- B29K2023/065—HDPE, i.e. high density polyethylene
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a preparation method of HDPE double-wall corrugated pipe, which comprises the following steps: firstly, screening a HDPE double-wall corrugated pipe raw material, and then processing the HDPE double-wall corrugated pipe raw material; feeding the treated HDPE double-wall corrugated pipe raw material into an extruding machine for heating and plasticizing, and extruding and molding. The preparation method of the HDPE double-wall corrugated pipe determines the optimal extrusion pressure of the extruder, and properly pressurizes the HDPE double-wall corrugated pipe in the extrusion process, so that the molecular chains of raw materials of the HDPE double-wall corrugated pipe are tighter, the viscosity of materials is increased, the quality of the extruded HDPE double-wall corrugated pipe is improved, the mechanical property of the HDPE double-wall corrugated pipe is improved, the temperature of the produced HDPE double-wall corrugated pipe can be constantly reduced, the cooling speed of the HDPE double-wall corrugated pipe is reduced, the influence of temperature difference on the HDPE double-wall corrugated pipe is reduced, the quality of the produced HDPE double-wall corrugated pipe is improved, and better use prospects are brought.
Description
Technical Field
The invention relates to the field of HDPE double-wall corrugated pipe processing, in particular to a preparation method of an HDPE double-wall corrugated pipe.
Background
With the development of society, plastic pipelines are steadily developing, PE pipes, PP-R pipes and UPVC pipes all occupy a place, wherein the strong development of the PE pipes is most attractive, the PE pipes are widely used, one common PE pipe is an HDPE double-wall corrugated pipe, the demand of people for the HDPE double-wall corrugated pipe is continuously increased along with the development of the building industry, and the preparation method of the HDPE double-wall corrugated pipe is invented for the convenience of people for producing the HDPE double-wall corrugated pipe;
the existing HDPE double-wall corrugated pipe preparation method has certain disadvantages when in use, firstly, the existing HDPE double-wall corrugated pipe preparation method adopts low-pressure extrusion during processing, the double-wall corrugated pipe is produced quickly but has poor quality, secondly, the existing HDPE double-wall corrugated pipe preparation method adopts one-time cooling in a cooling stage, the cold and hot changes of the double-wall corrugated pipe are quick, the double-wall corrugated pipe is locally broken, the quality of the double-wall corrugated pipe can be influenced, and the use requirements of people can not be met.
Disclosure of Invention
The invention mainly aims to provide a preparation method of HDPE double-wall corrugated 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 HDPE double-wall corrugated pipe comprises the following steps:
firstly, screening a HDPE double-wall corrugated pipe raw material, and then processing the HDPE double-wall corrugated pipe raw material;
feeding the processed HDPE double-wall corrugated pipe raw material into an extruding machine for heating and plasticizing, and performing extrusion molding to obtain a corrugated pipe blank;
sending the corrugated pipe blank after extrusion molding into a corrugated pipe molding machine for molding and flaring to obtain a rough corrugated pipe;
sending the rough corrugated pipe into cooling equipment for spray cooling, and then airing the rough corrugated pipe;
and (4) sending the dried rough corrugated pipe into an ink-jet printer for code spraying, and then cutting to obtain the HDPE double-wall corrugated pipe.
Preferably, the HDPE double-wall corrugated pipe raw material comprises polyethylene, reinforcing modified master batch, pigment and defoaming agent.
Preferably, the HDPE double-wall corrugated pipe comprises the following raw material processing steps:
(1) stirring with a stirrer at 30-40 deg.C at a stirring speed of 30-40r/min for 10-15 min;
(2) and conveying the uniformly stirred raw materials into a drying device, and drying by hot air at the drying temperature of 72-76 ℃ for 120-150 min.
Preferably, the HDPE double-wall corrugated pipe raw material heating and plasticizing process comprises a low-temperature heating stage, a constant-temperature compression stage and a raw material homogenizing stage, wherein the temperature of the low-temperature heating stage is 85-95 ℃, the heating time is 10-20min, the temperature of the constant-temperature compression stage is 120-180 ℃, the heating time is 5-10min, the temperature of the raw material homogenizing stage is 130-150 ℃, and the heating time is 10-20 min.
Preferably, two groups of extruding machines are adopted during plasticizing, materials plasticized by the two groups of extruding machines are conveyed to an extruding mould to respectively extrude the outer wall and the inner wall of the pipe of the HDPE double-wall corrugated pipe, the temperature of the head of the extruding machine is 175-185 ℃ during extruding, and the extruding pressure is 25-29 MPa.
Preferably, the rough corrugated pipe is cooled at constant temperature when being sprayed, water mist is sprayed by a high-pressure atomizing nozzle when being cooled, warm water with the temperature of 55 ℃ is selected at the initial spraying stage, water is changed for 3-4 times after being sprayed for 1-2min, and the temperature of the water is reduced by 8-10 ℃ each time.
Preferably, the air drying is assisted by a fan, and the surface temperature of the dried rough corrugated pipe is 20-30 ℃.
Preferably, the rough corrugated pipe is cut by an electric saw, and the surface of the rough corrugated pipe after cutting is polished by a grinding wheel.
Compared with the prior art, the preparation method of the HDPE double-wall corrugated pipe has the following beneficial effects:
1. the optimal extrusion pressure of the extruder is determined, and the HDPE double-wall corrugated pipe is properly pressurized in the extrusion process, so that the molecular chains of the raw materials of the HDPE double-wall corrugated pipe are tighter, the viscosity of the materials is increased, the quality of the extruded HDPE double-wall corrugated pipe is improved, and the mechanical property of the HDPE double-wall corrugated pipe is improved;
2. the HDPE double-wall corrugated pipe is characterized in that the HDPE double-wall corrugated pipe is connected with the water tank through a pipeline, and the water tank is connected with the water tank through a pipeline.
Drawings
FIG. 1 is a flow chart of the overall structure of a method for manufacturing HDPE double-wall corrugated pipe according to the present 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.
Example 1
A preparation method of HDPE double-wall corrugated pipe comprises the following steps:
firstly, screening a HDPE double-wall corrugated pipe raw material, and then processing the HDPE double-wall corrugated pipe raw material;
the HDPE double-wall corrugated pipe comprises polyethylene, a reinforced modified master batch, pigment and a defoaming agent;
the HDPE double-wall corrugated pipe comprises the following raw material processing steps:
(1) stirring by a stirrer, wherein the stirring temperature is 35 ℃, the stirring speed is 36r/min, and the stirring time is 12 min;
(2) and (3) conveying the uniformly stirred raw materials into a drying device, and drying by adopting hot air at the drying temperature of 75 ℃ for 130 min.
Feeding the processed HDPE double-wall corrugated pipe raw material into an extruding machine for heating and plasticizing, and performing extrusion molding to obtain a corrugated pipe blank;
the HDPE double-wall corrugated pipe raw material heating and plasticizing process comprises a low-temperature heating stage, a constant-temperature compression stage and a raw material homogenizing stage, wherein the temperature of the low-temperature heating stage is 90 ℃, the heating time is 12min, the temperature of the constant-temperature compression stage is 150 ℃, the heating time is 8min, the temperature of the raw material homogenizing stage is 135 ℃, and the heating time is 16 min;
and during plasticizing, two groups of extruding machines are adopted, materials plasticized by the two groups of extruding machines are conveyed to an extruding mould to respectively extrude the outer wall and the inner wall of the pipe of the HDPE double-wall corrugated pipe, the temperature of a machine head of the extruding machine is 180 ℃ during extruding, and the extruding pressure is 25 MPa.
And (4) sending the corrugated pipe blank subjected to extrusion molding into a corrugated pipe molding machine for molding and flaring to obtain the rough corrugated pipe.
Sending the rough corrugated pipe into cooling equipment for spray cooling, and then airing the rough corrugated pipe;
the rough corrugated pipe adopts constant temperature cooling when being sprayed for cooling, firstly adopts a high-pressure atomizing nozzle to spray water mist when being cooled, selects warm water with the temperature of 55 ℃ at the initial spraying stage, changes water after 2min, changes water for 3 times, and reduces the water temperature by 10 ℃ every time of changing water.
Sending the dried rough corrugated pipe into an ink-jet printer for code spraying, and then cutting to obtain an HDPE double-wall corrugated pipe;
drying in air by using a fan, wherein the surface temperature of the rough corrugated pipe after drying in air is 25 ℃;
and cutting the rough corrugated pipe by using an electric saw, and polishing the surface of the rough corrugated pipe after cutting by using a grinding wheel.
Example 2
A preparation method of HDPE double-wall corrugated pipe comprises the following steps:
firstly, screening a HDPE double-wall corrugated pipe raw material, and then processing the HDPE double-wall corrugated pipe raw material;
the HDPE double-wall corrugated pipe comprises polyethylene, a reinforced modified master batch, pigment and a defoaming agent;
the HDPE double-wall corrugated pipe comprises the following raw material processing steps:
(1) stirring by a stirrer, wherein the stirring temperature is 35 ℃, the stirring speed is 36r/min, and the stirring time is 12 min;
(2) and (3) conveying the uniformly stirred raw materials into a drying device, and drying by adopting hot air at the drying temperature of 75 ℃ for 130 min.
Feeding the processed HDPE double-wall corrugated pipe raw material into an extruding machine for heating and plasticizing, and performing extrusion molding to obtain a corrugated pipe blank;
the HDPE double-wall corrugated pipe raw material heating and plasticizing process comprises a low-temperature heating stage, a constant-temperature compression stage and a raw material homogenizing stage, wherein the temperature of the low-temperature heating stage is 90 ℃, the heating time is 12min, the temperature of the constant-temperature compression stage is 150 ℃, the heating time is 8min, the temperature of the raw material homogenizing stage is 135 ℃, and the heating time is 16 min;
and during plasticizing, two groups of extruding machines are adopted, materials plasticized by the two groups of extruding machines are conveyed to an extruding mould to respectively extrude the outer wall and the inner wall of the pipe of the HDPE double-wall corrugated pipe, the temperature of a machine head of the extruding machine is 180 ℃ during extruding, and the extruding pressure is 27 MPa.
And (4) sending the corrugated pipe blank subjected to extrusion molding into a corrugated pipe molding machine for molding and flaring to obtain the rough corrugated pipe.
Sending the rough corrugated pipe into cooling equipment for spray cooling, and then airing the rough corrugated pipe;
the rough corrugated pipe adopts constant temperature cooling when being sprayed for cooling, firstly adopts a high-pressure atomizing nozzle to spray water mist when being cooled, selects warm water with the temperature of 55 ℃ at the initial spraying stage, changes water after 1min, changes water for 4 times, and reduces the water temperature by 9 ℃ every time of changing water.
Sending the dried rough corrugated pipe into an ink-jet printer for code spraying, and then cutting to obtain an HDPE double-wall corrugated pipe;
drying in air by using a fan, wherein the surface temperature of the rough corrugated pipe after drying in air is 25 ℃;
and cutting the rough corrugated pipe by using an electric saw, and polishing the surface of the rough corrugated pipe after cutting by using a grinding wheel.
Example 3
A preparation method of HDPE double-wall corrugated pipe comprises the following steps:
firstly, screening a HDPE double-wall corrugated pipe raw material, and then processing the HDPE double-wall corrugated pipe raw material;
the HDPE double-wall corrugated pipe comprises polyethylene, a reinforced modified master batch, pigment and a defoaming agent;
the HDPE double-wall corrugated pipe comprises the following raw material processing steps:
(1) stirring by a stirrer, wherein the stirring temperature is 35 ℃, the stirring speed is 36r/min, and the stirring time is 12 min;
(2) and (3) conveying the uniformly stirred raw materials into a drying device, and drying by adopting hot air at the drying temperature of 75 ℃ for 130 min.
Feeding the processed HDPE double-wall corrugated pipe raw material into an extruding machine for heating and plasticizing, and performing extrusion molding to obtain a corrugated pipe blank;
the HDPE double-wall corrugated pipe raw material heating and plasticizing process comprises a low-temperature heating stage, a constant-temperature compression stage and a raw material homogenizing stage, wherein the temperature of the low-temperature heating stage is 90 ℃, the heating time is 12min, the temperature of the constant-temperature compression stage is 150 ℃, the heating time is 8min, the temperature of the raw material homogenizing stage is 135 ℃, and the heating time is 16 min;
and during plasticizing, two groups of extruding machines are adopted, materials plasticized by the two groups of extruding machines are conveyed to an extruding mould to respectively extrude the outer wall and the inner wall of the pipe of the HDPE double-wall corrugated pipe, the temperature of a machine head of the extruding machine is 180 ℃ during extruding, and the extruding pressure is 29 MPa.
And (4) sending the corrugated pipe blank subjected to extrusion molding into a corrugated pipe molding machine for molding and flaring to obtain the rough corrugated pipe.
Sending the rough corrugated pipe into cooling equipment for spray cooling, and then airing the rough corrugated pipe;
the rough corrugated pipe adopts constant temperature cooling when being sprayed for cooling, firstly adopts a high-pressure atomizing nozzle to spray water mist when being cooled, selects warm water with the temperature of 55 ℃ at the initial spraying stage, changes water after 1.5min, changes water for 4 times, and reduces the water temperature by 8 ℃ when changing water every time.
Sending the dried rough corrugated pipe into an ink-jet printer for code spraying, and then cutting to obtain an HDPE double-wall corrugated pipe;
drying in air by using a fan, wherein the surface temperature of the rough corrugated pipe after drying in air is 25 ℃;
and cutting the rough corrugated pipe by using an electric saw, and polishing the surface of the rough corrugated pipe after cutting by using a grinding wheel.
The preparation method of the HDPE double-wall corrugated pipe determines the optimal extrusion pressure of an extruder when in use, and properly pressurizes the HDPE double-wall corrugated pipe in the extrusion process, so that the molecular chains of the raw materials of the HDPE double-wall corrugated pipe are more compact, the viscosity of the materials is increased, the quality of the extruded HDPE double-wall corrugated pipe is improved, and the mechanical property of the HDPE double-wall corrugated pipe is improved;
the HDPE double-wall corrugated pipe is characterized in that the HDPE double-wall corrugated pipe is connected with the water tank through a pipeline, and the water tank is connected with the water tank through a pipeline.
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 (8)
1. A preparation method of HDPE double-wall corrugated pipe is characterized by comprising the following steps: the method comprises the following steps:
firstly, screening a HDPE double-wall corrugated pipe raw material, and then processing the HDPE double-wall corrugated pipe raw material;
feeding the processed HDPE double-wall corrugated pipe raw material into an extruding machine for heating and plasticizing, and performing extrusion molding to obtain a corrugated pipe blank;
sending the corrugated pipe blank after extrusion molding into a corrugated pipe molding machine for molding and flaring to obtain a rough corrugated pipe;
sending the rough corrugated pipe into cooling equipment for spray cooling, and then airing the rough corrugated pipe;
and (4) sending the dried rough corrugated pipe into an ink-jet printer for code spraying, and then cutting to obtain the HDPE double-wall corrugated pipe.
2. The method of claim 1, wherein the HDPE double-wall corrugated pipe is prepared by the following steps: the HDPE double-wall corrugated pipe comprises polyethylene, reinforced modified master batch, pigment and defoaming agent.
3. The method of claim 1, wherein the HDPE double-wall corrugated pipe is prepared by the following steps: the HDPE double-wall corrugated pipe comprises the following raw material processing steps:
(1) stirring with a stirrer at 30-40 deg.C at a stirring speed of 30-40r/min for 10-15 min;
(2) and conveying the uniformly stirred raw materials into a drying device, and drying by hot air at the drying temperature of 72-76 ℃ for 120-150 min.
4. The method of claim 1, wherein the HDPE double-wall corrugated pipe is prepared by the following steps: the HDPE double-wall corrugated pipe raw material heating and plasticizing process comprises a low-temperature heating stage, a constant-temperature compression stage and a raw material homogenizing stage, wherein the temperature of the low-temperature heating stage is 85-95 ℃, the heating time is 10-20min, the temperature of the constant-temperature compression stage is 120-180 ℃, the heating time is 5-10min, the temperature of the raw material homogenizing stage is 130-150 ℃, and the heating time is 10-20 min.
5. The method of claim 1, wherein the HDPE double-wall corrugated pipe is prepared by the following steps: and during plasticizing, two groups of extruding machines are adopted, materials plasticized by the two groups of extruding machines are conveyed to an extruding mould to respectively extrude the outer wall and the inner wall of the pipe of the HDPE double-wall corrugated pipe, the temperature of a machine head of the extruding machine is 175-185 ℃ during extruding, and the extruding pressure is 25-29 MPa.
6. The method of claim 1, wherein the HDPE double-wall corrugated pipe is prepared by the following steps: the rough corrugated pipe adopts constant temperature cooling when in spray cooling, firstly adopts a high-pressure atomizer to spray water mist when in cooling, adopts warm water with the temperature of 55 ℃ at the initial stage of spraying, changes water after 1-2min, changes water for 3-4 times, and reduces the water temperature by 8-10 ℃ every time of changing water.
7. The method of claim 1, wherein the HDPE double-wall corrugated pipe is prepared by the following steps: the air drying is assisted by a fan, and the surface temperature of the rough corrugated pipe after air drying is 20-30 ℃.
8. The method of claim 1, wherein the HDPE double-wall corrugated pipe is prepared by the following steps: and cutting the rough corrugated pipe by using an electric saw, and polishing the surface of the rough corrugated pipe after cutting by using a grinding wheel.
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| CN202010528685.2A CN111634037A (en) | 2020-06-11 | 2020-06-11 | Preparation method of HDPE double-wall corrugated pipe |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090825A (en) * | 2021-04-13 | 2021-07-09 | 安徽韵通塑业科技有限公司 | HDPE double-wall corrugated pipe and preparation process thereof |
| CN113103549A (en) * | 2021-04-13 | 2021-07-13 | 安徽国登管业科技有限公司 | Production process of corrugated pipe for municipal drainage |
| CN113462060A (en) * | 2021-07-30 | 2021-10-01 | 安徽豪洋管业科技有限公司 | HDPE double-wall corrugated pipe processing and extruding process |
| CN113524613A (en) * | 2021-07-15 | 2021-10-22 | 安庆市悦发管业有限公司 | Preparation process of HDPE double-wall corrugated pipe |
| CN113527793A (en) * | 2021-08-04 | 2021-10-22 | 安徽豪洋管业科技有限公司 | Production method of HDPE double-wall corrugated pipe |
| CN114658928A (en) * | 2022-04-11 | 2022-06-24 | 湖南恒远新材料科技发展有限公司 | HDPE multi-rib reinforced winding corrugated pipe and production method and device |
| CN115416253A (en) * | 2022-08-12 | 2022-12-02 | 安徽英标新材料科技有限公司 | Preparation method of high-strength HDPE corrugated pipe |
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| CN110748712A (en) * | 2019-10-28 | 2020-02-04 | 安徽华峰塑业科技有限公司 | Reinforced HDPE double-wall corrugated pipe and preparation method thereof |
| CN111057284A (en) * | 2019-06-04 | 2020-04-24 | 安徽富通塑业科技有限公司 | Reinforced HDPE double-wall corrugated pipe and preparation method thereof |
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| CN108397608A (en) * | 2018-03-01 | 2018-08-14 | 贵州黔峰管业有限公司 | A kind of two-layer compound tubing and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090825A (en) * | 2021-04-13 | 2021-07-09 | 安徽韵通塑业科技有限公司 | HDPE double-wall corrugated pipe and preparation process thereof |
| CN113103549A (en) * | 2021-04-13 | 2021-07-13 | 安徽国登管业科技有限公司 | Production process of corrugated pipe for municipal drainage |
| CN113103549B (en) * | 2021-04-13 | 2022-03-11 | 安徽国登管业科技有限公司 | Production process of corrugated pipe for municipal drainage |
| CN113090825B (en) * | 2021-04-13 | 2023-08-15 | 安徽韵通塑业科技有限公司 | HDPE double-wall corrugated pipe and preparation process thereof |
| CN113524613A (en) * | 2021-07-15 | 2021-10-22 | 安庆市悦发管业有限公司 | Preparation process of HDPE double-wall corrugated pipe |
| CN113462060A (en) * | 2021-07-30 | 2021-10-01 | 安徽豪洋管业科技有限公司 | HDPE double-wall corrugated pipe processing and extruding process |
| CN113527793A (en) * | 2021-08-04 | 2021-10-22 | 安徽豪洋管业科技有限公司 | Production method of HDPE double-wall corrugated pipe |
| CN114658928A (en) * | 2022-04-11 | 2022-06-24 | 湖南恒远新材料科技发展有限公司 | HDPE multi-rib reinforced winding corrugated pipe and production method and device |
| CN114658928B (en) * | 2022-04-11 | 2023-09-19 | 湖南恒远新材料科技发展有限公司 | HDPE multi-rib reinforced winding corrugated pipe and production method and device thereof |
| CN115416253A (en) * | 2022-08-12 | 2022-12-02 | 安徽英标新材料科技有限公司 | Preparation method of high-strength HDPE corrugated pipe |
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