CN112662092A - PVC pipe production process - Google Patents
PVC pipe production process Download PDFInfo
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- CN112662092A CN112662092A CN202011548961.8A CN202011548961A CN112662092A CN 112662092 A CN112662092 A CN 112662092A CN 202011548961 A CN202011548961 A CN 202011548961A CN 112662092 A CN112662092 A CN 112662092A
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Abstract
The invention relates to a PVC pipe production process, which comprises the following steps: (1) preparing materials; (2) putting the raw materials into a dryer for dehydration and drying; (3) putting the dried raw materials into a mixer, crushing and uniformly mixing the raw materials, and preheating the raw materials during mixing; (4) starting the extruder, preheating for 60-80min, putting the preheated raw materials into the extruder, and extruding and molding the raw materials into a mold; (5) the extruded pipe is shaped and cooled to normal temperature by a vacuum shaping machine in a vacuum environment; (6) and (4) obtaining a finished product PVC pipe after the pipe is dragged, marked and cut. The PVC pipe prepared by the invention has the advantages of good heat resistance and deformation resistance, long service life, simple and convenient production process, easy popularization and guaranteed product quality.
Description
Technical Field
The invention relates to the technical field of pipe production, in particular to a PVC pipe production process.
Background
The PVC pipe has wide application in the market, and compared with the traditional metal pipe and cement pipe, the produced finished product PVC pipe has the advantages of lower density, easy coloring, corrosion resistance, lower heat loss, good insulating property, smaller flow resistance, no scaling on the inner wall, convenient installation and maintenance and the like.
However, the production process of the PVC pipe in the market is various, the quality of the produced PVC pipe is also uneven, the heat resistance and the deformation resistance of the PVC pipe are general, and the service life of the PVC pipe is easily influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a production process of a PVC pipe.
In order to achieve the purpose, the invention adopts the following technical scheme:
a PVC pipe production process comprises the following steps:
(1) preparing materials: the weight portions are as follows:
95-125 parts of PVC resin, 4-6 parts of stabilizer, 1-2 parts of colorant, 0.5-1 part of lubricant, 2-3 parts of filler, 2-3 parts of toughener, 4-8 parts of plasticizer, 0.8-1.2 parts of antioxidant, 0.8-1.2 parts of antistatic agent, 1-2 parts of flame retardant, 2-4 parts of stearic acid, 2.5-4.5 parts of paraffin and 12-16 parts of calcium carbonate;
(2) placing the raw materials into a dryer for dehydration and drying, wherein the drying temperature is 80-90 ℃;
(3) putting the dried raw materials into a mixer for crushing and uniformly mixing, and preheating the raw materials during mixing at the heating temperature of 100-110 ℃;
(4) starting an extruder, preheating for 60-80min, putting the preheated raw materials into the extruder, and extruding and molding the raw materials into a mold, wherein the temperature of a material cylinder of the extruder is controlled to be 185-220 ℃, and the temperature of the mold is controlled to be 180-200 ℃;
(5) the extruded pipe is shaped and cooled to normal temperature by a vacuum shaping machine in a vacuum environment;
(6) and (4) obtaining a finished product PVC pipe after the pipe is dragged, marked and cut.
Particularly, the stabilizer in the step (1) is a lead salt stabilizer or a calcium zinc stabilizer.
Particularly, the filling agent in the step (1) is any two of kaolin, talcum powder, carbon black and diatomite.
Particularly, the toughening agent in the step (1) is one of ethylene propylene rubber, ethylene-vinyl acetate copolymer and nitrile rubber.
Specifically, the plasticizer in the step (1) is one of di (2-ethylhexyl) phthalate, dibutyl phthalate and diethyl phthalate.
Particularly, the mixing time in the step (3) is 30-40 min.
In particular, the extruder in the step (4) is a twin-screw extruder.
Particularly, the cooling mode in the step (5) is water cooling, the temperature of cooling water is 18-22 ℃, and the vacuum degree is 26-28 Kpa.
The invention has the beneficial effects that: the PVC pipe prepared by adopting the formula has the advantages of good heat resistance and deformation resistance, long service life, simple and convenient production process, easy popularization and guaranteed product quality.
Detailed Description
The invention is further illustrated by the following examples:
example 1
A PVC pipe production process comprises the following steps:
(1) preparing materials: the weight portions are as follows:
95 parts of PVC resin, 4 parts of stabilizer, 1 part of colorant, 0.5 part of lubricant, 2 parts of filler, 2 parts of toughener, 4 parts of plasticizer, 0.8 part of antioxidant, 0.8 part of antistatic agent, 1-2 parts of flame retardant, 2 parts of stearic acid, 2.5 parts of paraffin and 12 parts of calcium carbonate;
(2) placing the raw materials into a dryer for dehydration and drying, wherein the drying temperature is 80 ℃;
(3) putting the dried raw materials into a mixer, crushing and uniformly mixing, and preheating while mixing, wherein the heating temperature is 100 ℃;
(4) starting an extruder, preheating for 60min, putting the preheated raw materials into the extruder, and extruding and molding the raw materials into a mold, wherein the temperature of a material cylinder of the extruder is controlled at 185 ℃, and the temperature of the mold is controlled at 180 ℃;
(5) the extruded pipe is shaped and cooled to normal temperature by a vacuum shaping machine in a vacuum environment;
(6) and (4) obtaining a finished product PVC pipe after the pipe is dragged, marked and cut.
In particular, the stabilizer in the step (1) is a lead salt stabilizer.
Particularly, the filling agents in the step (1) are kaolin and talcum powder.
Particularly, the toughening agent in the step (1) is ethylene propylene rubber.
In particular, the plasticizer in the step (1) is di (2-ethylhexyl) phthalate.
In particular, the mixing time in the step (3) is 30 min.
In particular, the extruder in the step (4) is a twin-screw extruder.
Particularly, the cooling mode in the step (5) is water cooling, the temperature of cooling water is 18 ℃, and the vacuum degree is 26 Kpa.
Example 2
A PVC pipe production process comprises the following steps:
(1) preparing materials: the weight portions are as follows:
125 parts of PVC resin, 6 parts of stabilizer, 2 parts of colorant, 1 part of lubricant, 3 parts of filler, 3 parts of toughener, 8 parts of plasticizer, 1.2 parts of antioxidant, 1.2 parts of antistatic agent, 2 parts of flame retardant, 4 parts of stearic acid, 4.5 parts of paraffin and 16 parts of calcium carbonate;
(2) placing the raw materials into a dryer for dehydration and drying, wherein the drying temperature is 90 ℃;
(3) putting the dried raw materials into a mixer, crushing and uniformly mixing, and preheating while mixing, wherein the heating temperature is 110 ℃;
(4) starting an extruder, preheating for 80min, putting the preheated raw materials into the extruder, and extruding and molding the raw materials into a mold, wherein the temperature of a material cylinder of the extruder is controlled at 220 ℃, and the temperature of the mold is controlled at 200 ℃;
(5) the extruded pipe is shaped and cooled to normal temperature by a vacuum shaping machine in a vacuum environment;
(6) and (4) obtaining a finished product PVC pipe after the pipe is dragged, marked and cut.
In particular, the stabilizer in the step (1) is a calcium zinc stabilizer.
In particular, the filling agents in the step (1) are kaolin and carbon black.
Particularly, the toughening agent in the step (1) is an ethylene-vinyl acetate copolymer.
In particular, the plasticizer in the step (1) is dibutyl phthalate.
In particular, the mixing time in the step (3) is 40 min.
In particular, the extruder in the step (4) is a twin-screw extruder.
Particularly, the cooling mode in the step (5) is water cooling, the temperature of the cooling water is 22 ℃, and the vacuum degree is 28 Kpa.
Example 3
A PVC pipe production process comprises the following steps:
(1) preparing materials: the weight portions are as follows:
110 parts of PVC resin, 5 parts of stabilizer, 1.5 parts of colorant, 0.8 part of lubricant, 2.5 parts of filler, 2.5 parts of toughener, 6 parts of plasticizer, 1 part of antioxidant, 1 part of antistatic agent, 1.5 parts of flame retardant, 3 parts of stearic acid, 3.5 parts of paraffin and 14 parts of calcium carbonate;
(2) placing the raw materials into a dryer for dehydration and drying, wherein the drying temperature is 85 ℃;
(3) putting the dried raw materials into a mixer, crushing and uniformly mixing, and preheating while mixing, wherein the heating temperature is 105 ℃;
(4) starting an extruder, preheating for 70min, putting the preheated raw materials into the extruder, and extruding and molding the raw materials into a mold, wherein the temperature of a charging barrel of the extruder is controlled at 202 ℃, and the temperature of the mold is controlled at 190 ℃;
(5) the extruded pipe is shaped and cooled to normal temperature by a vacuum shaping machine in a vacuum environment;
(6) and (4) obtaining a finished product PVC pipe after the pipe is dragged, marked and cut.
In particular, the stabilizer in the step (1) is a lead salt stabilizer.
In particular, the filling agents in the step (1) are carbon black and diatomite.
Particularly, the toughening agent in the step (1) is nitrile rubber.
In particular, the plasticizer in the step (1) is diethyl phthalate.
In particular, the mixing time in the step (3) is 35 min.
In particular, the extruder in the step (4) is a twin-screw extruder.
Particularly, the cooling mode in the step (5) is water cooling, the temperature of the cooling water is 20 ℃, and the vacuum degree is 27 Kpa.
The invention has been described in an illustrative manner, and it is to be understood that the invention is not limited to the specific embodiments described above, but is intended to cover various modifications, which may be made by the methods and technical solutions of the invention, or may be applied to other applications without modification.
Claims (8)
1. A PVC pipe production process is characterized by comprising the following steps:
(1) preparing materials: the weight portions are as follows:
95-125 parts of PVC resin, 4-6 parts of stabilizer, 1-2 parts of colorant, 0.5-1 part of lubricant, 2-3 parts of filler, 2-3 parts of toughener, 4-8 parts of plasticizer, 0.8-1.2 parts of antioxidant, 0.8-1.2 parts of antistatic agent, 1-2 parts of flame retardant, 2-4 parts of stearic acid, 2.5-4.5 parts of paraffin and 12-16 parts of calcium carbonate;
(2) placing the raw materials into a dryer for dehydration and drying, wherein the drying temperature is 80-90 ℃;
(3) putting the dried raw materials into a mixer for crushing and uniformly mixing, and preheating the raw materials during mixing at the heating temperature of 100-110 ℃;
(4) starting an extruder, preheating for 60-80min, putting the preheated raw materials into the extruder, and extruding and molding the raw materials into a mold, wherein the temperature of a material cylinder of the extruder is controlled to be 185-220 ℃, and the temperature of the mold is controlled to be 180-200 ℃;
(5) the extruded pipe is shaped and cooled to normal temperature by a vacuum shaping machine in a vacuum environment;
(6) and (4) obtaining a finished product PVC pipe after the pipe is dragged, marked and cut.
2. The PVC pipe production process according to claim 1, wherein the stabilizer in step (1) is a lead salt stabilizer or a calcium zinc stabilizer.
3. The PVC pipe production process according to claim 1, wherein the filler in step (1) is any two of kaolin, talc, carbon black and diatomite.
4. The PVC pipe production process according to claim 1, wherein the toughening agent in the step (1) is one of ethylene propylene rubber, ethylene-vinyl acetate copolymer and nitrile rubber.
5. The PVC pipe production process according to claim 1, wherein the plasticizer in step (1) is one of di (2-ethylhexyl) phthalate, dibutyl phthalate and diethyl phthalate.
6. The PVC pipe production process according to claim 1, wherein the mixing time in step (3) is 30-40 min.
7. The PVC pipe production process according to claim 1, wherein the extruder in the step (4) is a twin-screw extruder.
8. The PVC pipe production process according to claim 1, wherein the cooling mode in the step (5) is water cooling, the temperature of the cooling water is 18-22 ℃, and the vacuum degree is 26-28 Kpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011548961.8A CN112662092A (en) | 2020-12-24 | 2020-12-24 | PVC pipe production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011548961.8A CN112662092A (en) | 2020-12-24 | 2020-12-24 | PVC pipe production process |
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| Publication Number | Publication Date |
|---|---|
| CN112662092A true CN112662092A (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011548961.8A Withdrawn CN112662092A (en) | 2020-12-24 | 2020-12-24 | PVC pipe production process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265112A (en) * | 2021-05-13 | 2021-08-17 | 河南康宅塑业有限公司 | Method for improving stability of PVC-U pipe fitting |
| CN113696440A (en) * | 2021-08-03 | 2021-11-26 | 佛山市龙异卫浴科技有限公司 | PVC co-extrusion molding production process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11314273A (en) * | 1998-05-01 | 1999-11-16 | Fujikura Ltd | Production of heat shrinkable pvc tube |
| CN108276701A (en) * | 2018-02-02 | 2018-07-13 | 陕西甘霖实业有限公司 | A kind of PVC pipe production technology |
| CN108997679A (en) * | 2018-08-27 | 2018-12-14 | 四川省海维塑胶有限公司 | A kind of PVC pipe production technology |
| CN109265864A (en) * | 2018-09-17 | 2019-01-25 | 黄勇洪 | A kind of environment-friendly PVC tubing |
| CN109897305A (en) * | 2019-02-25 | 2019-06-18 | 江苏凤腾塑料有限公司 | A kind of preparation method of heat-resistant PVC pipe |
-
2020
- 2020-12-24 CN CN202011548961.8A patent/CN112662092A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11314273A (en) * | 1998-05-01 | 1999-11-16 | Fujikura Ltd | Production of heat shrinkable pvc tube |
| CN108276701A (en) * | 2018-02-02 | 2018-07-13 | 陕西甘霖实业有限公司 | A kind of PVC pipe production technology |
| CN108997679A (en) * | 2018-08-27 | 2018-12-14 | 四川省海维塑胶有限公司 | A kind of PVC pipe production technology |
| CN109265864A (en) * | 2018-09-17 | 2019-01-25 | 黄勇洪 | A kind of environment-friendly PVC tubing |
| CN109897305A (en) * | 2019-02-25 | 2019-06-18 | 江苏凤腾塑料有限公司 | A kind of preparation method of heat-resistant PVC pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265112A (en) * | 2021-05-13 | 2021-08-17 | 河南康宅塑业有限公司 | Method for improving stability of PVC-U pipe fitting |
| CN113696440A (en) * | 2021-08-03 | 2021-11-26 | 佛山市龙异卫浴科技有限公司 | PVC co-extrusion molding production process |
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Application publication date: 20210416 |
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