CN106032584A - Production method of polytetrafluoroethylene filament for spinning - Google Patents
Production method of polytetrafluoroethylene filament for spinning Download PDFInfo
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- CN106032584A CN106032584A CN201510101812.XA CN201510101812A CN106032584A CN 106032584 A CN106032584 A CN 106032584A CN 201510101812 A CN201510101812 A CN 201510101812A CN 106032584 A CN106032584 A CN 106032584A
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- politef
- monofilament
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Abstract
The invention relates to a production method of a polytetrafluoroethylene filament for spinning. The production method comprises steps of mixing materials, adding materials, pushing, drying, stretching, and rolling. The drying step comprises four phases: drying, sintering, primary cooling, and secondary cooling. In the material mixing step, 70 to 80 wt% of agglomerated polytetrafluoroethylene powder is vibrated and grinded, then obtained powdery materials are sieved by a stainless steel screen, the sieved polytetrafluoroethylene powdery material and 0.5 to 2 wt% of nano calcium carbonate are poured into a sealed container, 20 to 30 wt% of lubricating auxiliary agent is added, the container is shaken for 40 to 50 minutes to mix the components in the container; then the container is placed in a water bath to maintain the temperature for 18 to 22 hours; after thermal insulation, the mixture in the container is sieved by a 8-mesh sieve, and the temperature of the water bath is 40 to 90 DEG C. The production method has the advantages that the technology is simple, and the quality of produced polytetrafluoroethylene filament is high.
Description
Technical field
The present invention relates to textile field, spin by the production method of politef monofilament particularly to a kind of.
Background technology
Politef is one of decay resistance optimal material in the world today, therefore
The laudatory title of King.Its energy which kind of class chemical mediator life-time service in office, its generation solves many problems in the fields such as China's chemical industry, oil, pharmacy.It is widely used as encapsulant and packing material.
Owing to politef has above-mentioned good characteristic, being used primarily in fabrics for industrial use, the such as sewing at hot gas filtration goods requires high convergency intensity, the heat-resisting and goods sewing of resistance to chemical attack with other, also can be used for medical textile field.
The politef monofilament that at present prepared by technique, monofilament quality is low, is not suitable for large batch of production.
Summary of the invention
It is simple that the technical problem to be solved in the present invention is to provide a kind of technique, and the production method of the high spinning politef monofilament of the monofilament quality for preparing.
For solving above-mentioned technical problem, the technical scheme is that a kind of spinning uses the production method of politef monofilament, its innovative point is: described method include batch mixing, feed, push, be dried, stretching and winding operation, drying process includes being dried, sinters, once cooling and cooling twice four-stage.
Further, described compounding process is to shake the powder conglomeration material of 70-80wt% politef to smash, gained powder materials sieves through 8 mesh stainless (steel) wires, polytetrafluorethylepowder powder material after sieving is poured in the container of sealing together with 0.5-2wt% nano-calcium carbonate, add 20-30wt% lubricating auxiliary agent, shake mixing 40-50min, be placed in water-bath insulation 18-22 hour, insulation crosses 8 mesh sieves after terminating again, and wherein water-bath temperature is 40-90 DEG C.
Further, described pushing operation is to extrude the compound in die cavity from mouth die to become politef and come into being monofilament, and the temperature of selected die cavity and mouth die is 40-70 DEG C, selects cone angle to be 35-55 °, and speed reducing ratio is 1200-2000.
Further, described drying process is that monofilament of being come into being by obtained politef first passes through dryer section, and dryer section temperature is 130-150 DEG C, it is dried, is incubated 18-22 hour, is passed through air section the most again, again by sintering part, sintering portion temperature is 353-390 DEG C, sinters 1-2 hour, once cool down at cooling water again, cooling water temperature is maintained at 20-22 DEG C, and cool time, 30-40min, carried out cooling twice the most in atmosphere, condition is room temperature, 1-2 hour cool time.
Further, described stretching and winding operation is that obtained politef monofilament is carried out after-drawing, and draw ratio is 4-6 times, is wound after having stretched again, and winding speed is 60-130m/min.
It is an advantage of the current invention that: the present invention spins and uses the production method of politef monofilament, and production method is simple, and the filament diameter prepared reaches 0.2-4mm, filament strength is 6-8.8cN/dtex, and elongation at break is 30-45%, improves the quality of monofilament.
Detailed description of the invention
Embodiment 1
A kind of spin by the production method of politef monofilament, method include batch mixing, feed, push, be dried, stretching and winding operation, drying process includes being dried, sinters, once cools down and cooling twice four-stage.
Above-mentioned compounding process is to shake the powder conglomeration material of 70wt% politef to smash, gained powder materials sieves through 8 mesh stainless (steel) wires, polytetrafluorethylepowder powder material after sieving is poured in the container of sealing together with 0.5% nano-calcium carbonate, add 20% lubricating auxiliary agent, shake mixing 40min, being placed in water-bath insulation 18 hours, insulation crosses 8 mesh sieves after terminating again, and wherein water-bath temperature is 40 DEG C.
Above-mentioned pushing operation is to extrude the compound in die cavity from mouth die to become politef and come into being monofilament, and the temperature of selected die cavity and mouth die is 40 DEG C, and selecting cone angle is 35 °, and speed reducing ratio is 1200.
Above-mentioned drying process is that monofilament of being come into being by obtained politef first passes through dryer section, and dryer section temperature is 130 DEG C, is dried, it is incubated 18 hours, is passed through air section the most again, then by sintering part, sintering portion temperature is 353 DEG C, sintering 1 hour, more once cool down at cooling water, cooling water temperature is maintained at 20 DEG C, cool time 30min, finally carrying out cooling twice in atmosphere, condition is room temperature, 1 hour cool time.
Above-mentioned stretching and winding operation is that obtained politef monofilament is carried out after-drawing, and draw ratio is 4-6 times, is wound after having stretched again, and winding speed is 60m/min.
Embodiment 3
A kind of spin by the production method of politef monofilament, method include batch mixing, feed, push, be dried, stretching and winding operation, drying process includes being dried, sinters, once cools down and cooling twice four-stage.
Above-mentioned compounding process is to shake the powder conglomeration material of 80wt% politef to smash, gained powder materials sieves through 8 mesh stainless (steel) wires, polytetrafluorethylepowder powder material after sieving is poured in the container of sealing together with 2wt% nano-calcium carbonate, add 30wt% lubricating auxiliary agent, shake mixing 50min, being placed in water-bath insulation 22 hours, insulation crosses 8 mesh sieves after terminating again, and wherein water-bath temperature is 90 DEG C.
Above-mentioned pushing operation is to extrude the compound in die cavity from mouth die to become politef and come into being monofilament, and selected die cavity and the temperature 70 C of mouth die, selecting cone angle is 55 °, and speed reducing ratio is 2000.
Above-mentioned drying process is that monofilament of being come into being by obtained politef first passes through dryer section, and dryer section temperature is 150 DEG C, is dried, it is incubated 22 hours, is passed through air section the most again, then by sintering part, sintering portion temperature is 390 DEG C, sintering 2 hours, more once cool down at cooling water, cooling water temperature is maintained at 22 DEG C, cool time 40min, finally carrying out cooling twice in atmosphere, condition is room temperature, 2 hours cool times.
Above-mentioned stretching and winding operation is that obtained politef monofilament is carried out after-drawing, and draw ratio is 6 times, is wound after having stretched again, and winding speed is 130m/min.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (5)
1. one kind is spinned by the production method of politef monofilament, it is characterised in that: described method include batch mixing, feed, push, be dried, stretching and winding operation, drying process includes being dried, sinters, once cools down and cooling twice four-stage.
The production method of spinning politef monofilament the most according to claim 1, it is characterized in that: described compounding process is to shake the powder conglomeration material of 70-80wt% politef to smash, gained powder materials sieves through 8 mesh stainless (steel) wires, polytetrafluorethylepowder powder material after sieving is poured in the container of sealing together with 0.5-2wt% nano-calcium carbonate, add 20-30wt% lubricating auxiliary agent, shake mixing 40-50min, it is placed in water-bath insulation 18-22 hour, insulation crosses 8 mesh sieves after terminating again, and wherein water-bath temperature is 40-90 DEG C.
The production method of spinning politef monofilament the most according to claim 1, it is characterized in that: described pushing operation is to extrude the compound in die cavity from mouth die to become politef and come into being monofilament, the temperature of selected die cavity and mouth die is 40-70 DEG C, selecting cone angle to be 35-55 °, speed reducing ratio is 1200-2000.
The production method of spinning politef monofilament the most according to claim 1, it is characterized in that: described drying process is that monofilament of being come into being by obtained politef first passes through dryer section, dryer section temperature is 130-150 DEG C, it is dried, it is incubated 18-22 hour, passed through air section the most again, again by sintering part, sintering portion temperature is 353-390 DEG C, sinter 1-2 hour, once cool down at cooling water again, cooling water temperature is maintained at 20-22 DEG C, cool time 30-40min, finally carry out cooling twice in atmosphere, condition is room temperature, 1-2 hour cool time.
The production method of spinning politef monofilament the most according to claim 1, it is characterized in that: described stretching and winding operation is that obtained politef monofilament is carried out after-drawing, draw ratio is 4-6 times, is wound after having stretched again, and winding speed is 60-130m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510101812.XA CN106032584A (en) | 2015-03-09 | 2015-03-09 | Production method of polytetrafluoroethylene filament for spinning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510101812.XA CN106032584A (en) | 2015-03-09 | 2015-03-09 | Production method of polytetrafluoroethylene filament for spinning |
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| Publication Number | Publication Date |
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| CN106032584A true CN106032584A (en) | 2016-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510101812.XA Pending CN106032584A (en) | 2015-03-09 | 2015-03-09 | Production method of polytetrafluoroethylene filament for spinning |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106757472A (en) * | 2016-12-01 | 2017-05-31 | 南通博泰美术图案设计有限公司 | Polytetrafluoroethylene (PTFE) monofilament and its production method |
| CN106906532A (en) * | 2017-04-26 | 2017-06-30 | 南通博泰美术图案设计有限公司 | Polytetrafluoroethylene (PTFE) monofilament and its production method |
-
2015
- 2015-03-09 CN CN201510101812.XA patent/CN106032584A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106757472A (en) * | 2016-12-01 | 2017-05-31 | 南通博泰美术图案设计有限公司 | Polytetrafluoroethylene (PTFE) monofilament and its production method |
| CN106906532A (en) * | 2017-04-26 | 2017-06-30 | 南通博泰美术图案设计有限公司 | Polytetrafluoroethylene (PTFE) monofilament and its production method |
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Application publication date: 20161019 |
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| WD01 | Invention patent application deemed withdrawn after publication |