CN112454807A - Preparation process of PVC corrugated pipe - Google Patents
Preparation process of PVC corrugated pipe Download PDFInfo
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- CN112454807A CN112454807A CN202011235236.5A CN202011235236A CN112454807A CN 112454807 A CN112454807 A CN 112454807A CN 202011235236 A CN202011235236 A CN 202011235236A CN 112454807 A CN112454807 A CN 112454807A
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- corrugated pipe
- main material
- heating
- pvc
- preparation process
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Classifications
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/06—PVC, i.e. polyvinylchloride
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a preparation process of a PVC corrugated pipe, which comprises the following operation steps: s1: preparing raw materials, wherein the raw materials comprise main materials and auxiliary materials, and weighing the raw materials in proportion; s2: putting the main material into a heating and stirring tank, heating and stirring at high temperature to melt and stir the main material uniformly; s3: adding the auxiliary material into the hot-melted main material, and further heating and stirring the main material to uniformly mix the main material and the auxiliary material; s4: pouring the melted material into a spiral extruder, extruding the melted material into a tubular mold, and synchronously vibrating the mold; s5: placing the mold into a heat preservation channel for low-temperature storage; s6: spraying cooling liquid on the mould, and demoulding; s7: and polishing and deburring the corrugated pipe. According to the preparation process of the PVC corrugated pipe, the raw materials are uniformly mixed through high-temperature heating and melting, so that the PVC corrugated pipe is stable in structure, the PVC corrugated pipe is uniform in texture by adopting a vibration mode during injection molding, and air bubbles are prevented from being generated when the PVC corrugated pipe is closed.
Description
Technical Field
The invention relates to the field of PVC corrugated pipe processing, in particular to a preparation process of a PVC corrugated pipe.
Background
The corrugated pipe is a tubular elastic sensitive element which is formed by connecting foldable corrugated sheets along the folding and stretching direction. The corrugated pipe has wide application in instruments and meters, and is mainly used for fixing an opening end, enabling a sealing end to be in a free state and increasing elasticity by using an auxiliary spiral spring or a reed. When working, the pipe is extended along the length direction under the action of internal pressure, so that the movable end generates displacement in a certain relation with the pressure. The corrugated pipe uses raw material base materials mainly comprising PVC, PE and PP, and although the PVC corrugated pipe is widely applied to the field of water supply and drainage, the PVC corrugated pipe on the market has great defects in the aspects of melt flow rate, tensile strength and impact resistance.
Disclosure of Invention
The invention mainly aims to provide a preparation process of a PVC 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 process of a PVC corrugated pipe comprises the following operation steps:
s1: preparing raw materials, wherein the raw materials comprise main materials and auxiliary materials, and weighing the raw materials in proportion;
s2: putting the main material into a heating and stirring tank, heating and stirring at high temperature to melt and stir the main material uniformly;
s3: adding the auxiliary material into the hot-melted main material, and further heating and stirring the main material to uniformly mix the main material and the auxiliary material;
s4: pouring the melted material into a spiral extruder, extruding the melted material into a tubular mold, and synchronously vibrating the mold;
s5: placing the mold into a heat preservation channel for low-temperature storage;
s6: spraying cooling liquid on the mould, and demoulding;
s7: and polishing and deburring the corrugated pipe.
Preferably, the temperature of the heating and stirring tank in the step S2 is 500-800 ℃, and the stirring time is 2-3 h.
Preferably, the stirring time in the step of S3 is 5h to 8 h.
Preferably, the vibration frequency in the step S4 is 18Hz to 20 Hz.
Preferably, the temperature in the step S5 is 50 ℃, and the storage time is 8-10 h.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the raw materials are uniformly mixed through high-temperature heating and melting, so that the structure of the PVC corrugated pipe is stable, the PVC corrugated pipe is uniform in texture by adopting a vibration mode during injection molding, air bubbles are prevented from being closed, the wall body of the PVC corrugated pipe is fully reacted in a constant-temperature state through a low-temperature heat preservation technology, and the chemical property of the pipe wall of the PVC corrugated pipe is stable.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention relates to a preparation process of a PVC corrugated pipe, which comprises the following operation steps:
s1: preparing raw materials, wherein the raw materials comprise a main material and an auxiliary material, the raw materials are weighed according to a proportion, the main material comprises PVC resin, polyvinyl chloride, carbon black, calcium carbonate and white wax, the auxiliary material comprises a reinforcing agent, an antioxidant and a stabilizer, and the main material and the auxiliary material are respectively 40-50% of the PVC resin, 20-30% of the polyvinyl chloride, 5-10% of the carbon black, 5-10% of the calcium carbonate, 5-10% of the white wax, 0.5-1% of the reinforcing agent, 0.5-1% of the antioxidant and 0.5-1% of the stabilizer;
s2: putting the main material into a heating and stirring tank, and heating and stirring at high temperature, wherein the temperature of the heating and stirring tank is 500-;
s3: adding the auxiliary material into the hot-melted main material, and further heating and stirring the main material for 5-8 hours to uniformly mix the main material and the auxiliary material;
s4: pouring the melted material into a spiral extruder, extruding the melted material into a tubular mold, and synchronously vibrating the mold, wherein the vibration frequency is 18Hz-20 Hz;
s5: placing the mold into a heat preservation channel for low-temperature storage at the temperature of 50 ℃ for 8-10 h;
s6: spraying cooling liquid on the mould, and demoulding;
s7: and polishing and deburring the corrugated pipe.
Example 2:
on the basis of embodiment 1, the preparation process of the PVC corrugated pipe comprises the following operation steps:
s1: preparing raw materials, wherein the raw materials comprise a main material and an auxiliary material, the raw materials are weighed according to a proportion, the main material comprises PVC resin, polyvinyl chloride, carbon black, calcium carbonate and white wax, the auxiliary material comprises a reinforcing agent, an antioxidant and a stabilizer, and the main material and the auxiliary material are respectively 48% of PVC resin, 26% of polyvinyl chloride, 8% of carbon black, 7% of calcium carbonate, 8% of white wax, 1% of reinforcing agent, 0.5% of antioxidant and 0.5% of stabilizer;
s2: putting the main materials into a heating and stirring tank, heating and stirring at high temperature, wherein the temperature of the heating and stirring tank is 600 ℃, and the stirring time is 2.5 hours, so that the main materials are melted, stirred and uniformly mixed;
s3: adding the auxiliary material into the hot-melted main material, and further heating and stirring the main material for 6 hours to uniformly mix the main material and the auxiliary material;
s4: pouring the melted material into a spiral extruder, extruding the melted material into a tubular mold, and synchronously vibrating the mold, wherein the vibration frequency is 18.6 Hz;
s5: placing the die into a heat preservation channel for low-temperature storage at the temperature of 50 ℃ for 8.5 hours;
s6: spraying cooling liquid on the mould, and demoulding;
s7: and polishing and deburring the corrugated pipe.
Example 3:
on the basis of embodiment 1, the preparation process of the PVC corrugated pipe comprises the following operation steps:
s1: preparing raw materials, wherein the raw materials comprise a main material and an auxiliary material, the raw materials are weighed according to a proportion, the main material comprises PVC resin, polyvinyl chloride, carbon black, calcium carbonate and white wax, the auxiliary material comprises a reinforcing agent, an antioxidant and a stabilizer, and the main material and the auxiliary material are respectively 46% of PVC resin, 28% of polyvinyl chloride, 8% of carbon black, 8% of calcium carbonate, 8% of white wax, 0.6% of reinforcing agent, 0.8% of antioxidant and 0.6% of stabilizer;
s2: putting the main material into a heating and stirring tank, and heating and stirring at high temperature, wherein the temperature of the heating and stirring tank is 500-;
s3: adding the auxiliary material into the hot-melted main material, and further heating and stirring the main material for 6.8 hours to uniformly mix the main material and the auxiliary material;
s4: pouring the melted material into a spiral extruder, extruding the melted material into a tubular mold, and synchronously vibrating the mold, wherein the vibration frequency is 18.9 Hz;
s5: placing the die into a heat preservation channel for low-temperature storage at the temperature of 50 ℃ for 8.6 hours;
s6: spraying cooling liquid on the mould, and demoulding;
s7: and polishing and deburring the corrugated pipe.
Example 4:
on the basis of embodiment 1, the preparation process of the PVC corrugated pipe comprises the following operation steps:
s1: preparing raw materials, wherein the raw materials comprise a main material and an auxiliary material, the raw materials are weighed according to a proportion, the main material comprises PVC resin, polyvinyl chloride, carbon black, calcium carbonate and white wax, the auxiliary material comprises a reinforcing agent, an antioxidant and a stabilizer, and the main material and the auxiliary material are respectively 40-50% of the PVC resin, 26% of the polyvinyl chloride, 7% of the carbon black, 6% of the calcium carbonate, 9% of the white wax, 0.5% of the reinforcing agent, 0.8% of the antioxidant and 0.7% of the stabilizer;
s2: putting the main materials into a heating and stirring tank, heating and stirring at high temperature, wherein the temperature of the heating and stirring tank is 720 ℃, and the stirring time is 2.2 hours, so that the main materials are melted, stirred and uniformly mixed;
s3: adding the auxiliary material into the hot-melted main material, and further heating and stirring the main material for 7.5 hours to uniformly mix the main material and the auxiliary material;
s4: pouring the melted material into a spiral extruder, extruding the melted material into a tubular mold, and synchronously vibrating the mold, wherein the vibration frequency is 19.3 Hz;
s5: placing the die into a heat preservation channel for low-temperature storage at the temperature of 50 ℃ for 8.3 h;
s6: spraying cooling liquid on the mould, and demoulding;
s7: and polishing and deburring the corrugated pipe.
Example 5:
on the basis of embodiment 1, the preparation process of the PVC corrugated pipe comprises the following operation steps:
s1: preparing raw materials, wherein the raw materials comprise a main material and an auxiliary material, the raw materials are weighed according to a proportion, the main material comprises PVC resin, polyvinyl chloride, carbon black, calcium carbonate and white wax, the auxiliary material comprises a reinforcing agent, an antioxidant and a stabilizer, and the main material and the auxiliary material are respectively 48% of PVC resin, 28% of polyvinyl chloride, 7% of carbon black, 6% of calcium carbonate, 9% of white wax, 0.6% of reinforcing agent, 0.6% of antioxidant and 0.8% of stabilizer;
s2: putting the main materials into a heating and stirring tank, heating and stirring at high temperature, wherein the temperature of the heating and stirring tank is 650 ℃, and the stirring time is 2.3 hours, so that the main materials are melted, stirred and uniformly mixed;
s3: adding the auxiliary material into the hot-melted main material, and further heating and stirring the main material for 6.2 hours to uniformly mix the main material and the auxiliary material;
s4: pouring the melted material into a spiral extruder, extruding the melted material into a tubular mold, and synchronously vibrating the mold, wherein the vibration frequency is 18.5 Hz;
s5: placing the die into a heat preservation channel for low-temperature storage at the temperature of 50 ℃ for 8.8 hours;
s6: spraying cooling liquid on the mould, and demoulding;
s7: and polishing and deburring the corrugated pipe.
Example 6:
on the basis of embodiment 1, the preparation process of the PVC corrugated pipe comprises the following operation steps:
s1: preparing raw materials, wherein the raw materials comprise a main material and an auxiliary material, the raw materials are weighed according to a proportion, the main material comprises PVC resin, polyvinyl chloride, carbon black, calcium carbonate and white wax, the auxiliary material comprises a reinforcing agent, an antioxidant and a stabilizer, and the main material and the auxiliary material are respectively 46% of PVC resin, 26% of polyvinyl chloride, 8% of carbon black, 9% of calcium carbonate, 9% of white wax, 0.6% of reinforcing agent, 0.7% of antioxidant and 0.7% of stabilizer;
s2: putting the main materials into a heating and stirring tank, heating and stirring at high temperature, wherein the temperature of the heating and stirring tank is 650 ℃, and the stirring time is 2.1h, so that the main materials are melted, stirred and uniformly mixed;
s3: adding the auxiliary material into the hot-melted main material, and further heating and stirring the main material for 6.3 hours to uniformly mix the main material and the auxiliary material;
s4: pouring the melted material into a spiral extruder, extruding the melted material into a tubular mold, and synchronously vibrating the mold, wherein the vibration frequency is 19.2 Hz;
s5: placing the die into a heat preservation channel for low-temperature storage at the temperature of 50 ℃ for 8.5 hours;
s6: spraying cooling liquid on the mould, and demoulding;
s7: and polishing and deburring the corrugated pipe.
Example 7:
on the basis of embodiment 1, the preparation process of the PVC corrugated pipe comprises the following operation steps:
s1: preparing raw materials, wherein the raw materials comprise a main material and an auxiliary material, the raw materials are weighed according to a proportion, the main material comprises PVC resin, polyvinyl chloride, carbon black, calcium carbonate and white wax, the auxiliary material comprises a reinforcing agent, an antioxidant and a stabilizer, and the main material and the auxiliary material are respectively 48% of PVC resin, 30% of polyvinyl chloride, 8% of carbon black, 5% of calcium carbonate, 7% of white wax, 0.6% of reinforcing agent, 0.5% of antioxidant and 0.9% of stabilizer;
s2: putting the main materials into a heating and stirring tank, heating and stirring at high temperature, wherein the temperature of the heating and stirring tank is 680 ℃, and the stirring time is 2.6 hours, so that the main materials are melted, stirred and uniformly mixed;
s3: adding the auxiliary material into the hot-melted main material, and further heating and stirring the main material for 7.2 hours to uniformly mix the main material and the auxiliary material;
s4: pouring the melted material into a spiral extruder, extruding the melted material into a tubular mold, and synchronously vibrating the mold, wherein the vibration frequency is 19.6 Hz;
s5: placing the die into a heat preservation channel for low-temperature storage at the temperature of 50 ℃ for 9 h;
s6: spraying cooling liquid on the mould, and demoulding;
s7: and polishing and deburring the corrugated pipe.
According to the invention, the raw materials are uniformly mixed through high-temperature heating and melting, so that the structure of the PVC corrugated pipe is stable, the PVC corrugated pipe is uniform in texture by adopting a vibration mode during injection molding, the generation of closed air bubbles is avoided, the wall body of the PVC corrugated pipe is fully reacted in a constant-temperature state through a low-temperature heat preservation technology, and the chemical property of the pipe wall of the PVC corrugated pipe is stable.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A preparation process of a PVC corrugated pipe is characterized by comprising the following steps: the method comprises the following operation steps:
s1: preparing raw materials, wherein the raw materials comprise main materials and auxiliary materials, and weighing the raw materials in proportion;
s2: putting the main material into a heating and stirring tank, heating and stirring at high temperature to melt and stir the main material uniformly;
s3: adding the auxiliary material into the hot-melted main material, and further heating and stirring the main material to uniformly mix the main material and the auxiliary material;
s4: pouring the melted material into a spiral extruder, extruding the melted material into a tubular mold, and synchronously vibrating the mold;
s5: placing the mold into a heat preservation channel for low-temperature storage;
s6: spraying cooling liquid on the mould, and demoulding;
s7: and polishing and deburring the corrugated pipe.
2. The preparation process of the PVC corrugated pipe according to claim 1, characterized in that: the main material in the step S1 comprises PVC resin, polyvinyl chloride, carbon black, calcium carbonate and white wax, the auxiliary material comprises a reinforcing agent, an antioxidant and a stabilizer, and the main material and the auxiliary material are respectively 40-50% of the PVC resin, 20-30% of the polyvinyl chloride, 5-10% of the carbon black, 5-10% of the calcium carbonate, 5-10% of the white wax, 0.5-1% of the reinforcing agent, 0.5-1% of the antioxidant and 0.5-1% of the stabilizer.
3. The preparation process of the PVC corrugated pipe according to claim 1, characterized in that: the temperature of the heating stirring tank in the step S2 is 500-800 ℃, and the stirring time is 2-3 h.
4. The preparation process of the PVC corrugated pipe according to claim 1, characterized in that: the stirring time in the step S3 is 5-8 h.
5. The preparation process of the PVC corrugated pipe according to claim 1, characterized in that: the vibration frequency in the step S4 is 18Hz-20 Hz.
6. The preparation process of the PVC corrugated pipe according to claim 1, characterized in that: the temperature in the step S5 is 50 ℃, and the storage time is 8-10 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011235236.5A CN112454807A (en) | 2020-11-08 | 2020-11-08 | Preparation process of PVC corrugated pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011235236.5A CN112454807A (en) | 2020-11-08 | 2020-11-08 | Preparation process of PVC corrugated pipe |
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| CN112454807A true CN112454807A (en) | 2021-03-09 |
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| CN202011235236.5A Pending CN112454807A (en) | 2020-11-08 | 2020-11-08 | Preparation process of PVC corrugated pipe |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0469227A (en) * | 1990-07-10 | 1992-03-04 | Kubota Corp | Corrugated pipe |
| CN2784161Y (en) * | 2005-04-15 | 2006-05-31 | 北京市燕兴隆新型墙体材料有限公司 | Extrude forming machine |
| CN104927264A (en) * | 2015-06-18 | 2015-09-23 | 湖北金马塑业有限公司 | Chlorinated polyvinyl chloride double-wall corrugated pipe |
| CN106065119A (en) * | 2016-08-24 | 2016-11-02 | 江苏长风波纹管有限公司 | A kind of enhanced polypropylene double-wall corrugated pipe |
| CN106084449A (en) * | 2016-06-03 | 2016-11-09 | 楼柏木 | HDPE double-wall corrugated pipe and preparation technology thereof |
| CN109054216A (en) * | 2018-05-29 | 2018-12-21 | 广东联塑科技实业有限公司 | A kind of corrugated dual-wall hard PVC pipe and preparation method thereof |
| CN110713678A (en) * | 2019-09-30 | 2020-01-21 | 安徽瑞琦塑胶科技有限公司 | Preparation method of high-strength pipe for double-wall corrugated pipe |
| CN111607168A (en) * | 2020-06-30 | 2020-09-01 | 贵州宏润管业有限公司 | Graphene oxide modified polypropylene-based square corrugated pipe and manufacturing method thereof |
-
2020
- 2020-11-08 CN CN202011235236.5A patent/CN112454807A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0469227A (en) * | 1990-07-10 | 1992-03-04 | Kubota Corp | Corrugated pipe |
| CN2784161Y (en) * | 2005-04-15 | 2006-05-31 | 北京市燕兴隆新型墙体材料有限公司 | Extrude forming machine |
| CN104927264A (en) * | 2015-06-18 | 2015-09-23 | 湖北金马塑业有限公司 | Chlorinated polyvinyl chloride double-wall corrugated pipe |
| CN106084449A (en) * | 2016-06-03 | 2016-11-09 | 楼柏木 | HDPE double-wall corrugated pipe and preparation technology thereof |
| CN106065119A (en) * | 2016-08-24 | 2016-11-02 | 江苏长风波纹管有限公司 | A kind of enhanced polypropylene double-wall corrugated pipe |
| CN109054216A (en) * | 2018-05-29 | 2018-12-21 | 广东联塑科技实业有限公司 | A kind of corrugated dual-wall hard PVC pipe and preparation method thereof |
| CN110713678A (en) * | 2019-09-30 | 2020-01-21 | 安徽瑞琦塑胶科技有限公司 | Preparation method of high-strength pipe for double-wall corrugated pipe |
| CN111607168A (en) * | 2020-06-30 | 2020-09-01 | 贵州宏润管业有限公司 | Graphene oxide modified polypropylene-based square corrugated pipe and manufacturing method thereof |
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Application publication date: 20210309 |