CN109487351A - A kind of production method of polytetrafluoroethylene (PTFE) - Google Patents
A kind of production method of polytetrafluoroethylene (PTFE) Download PDFInfo
- Publication number
- CN109487351A CN109487351A CN201811246623.1A CN201811246623A CN109487351A CN 109487351 A CN109487351 A CN 109487351A CN 201811246623 A CN201811246623 A CN 201811246623A CN 109487351 A CN109487351 A CN 109487351A
- Authority
- CN
- China
- Prior art keywords
- ptfe
- polytetrafluoroethylene
- carried out
- production method
- coupling agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
- D01D5/0885—Cooling filaments, threads or the like, leaving the spinnerettes by means of a liquid
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/48—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of halogenated hydrocarbons
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a kind of production method of polytetrafluoroethylene (PTFE), with coupling agent treatment talcum powder, polyethylene is mixed with treated talcum powder and polyimides, polyacrylamide, filler calcium carbonate, lubricant silica material；Mixing material is granulated in dual-screw-stem machine, master batch be uniformly mixed preparing to be blended with polytetrafluoroethylene (PTFE), polybenzoate, dispersing agent and coupling agent and carries out melting extrusion spinning, medium temperature is carried out to spun filament to store 2-3 minutes, then it carries out 10-15 minutes air-cooled, it is cooling that liquid is carried out after feeding back again by high temperature, stretch processing is carried out after cooling, is carried out shaping after stretching by heating；Using the prefabricated compression polytetrafluoroethylene (PTFE) of compressor, so that outer surface is formed with evenly arranged protrusion in compression process, fibrous layer is coated on outside polytetrafluoroethylene (PTFE) by the pultrusion that is heating and curing.
Description
Technical field
The present invention relates to polytetrafluoroethylene (PTFE) processing technique fields, and in particular to a kind of production method of polytetrafluoroethylene (PTFE).
Background technique
Polytetrafluoroethylene (PTFE) is claimed " King ", and having excellent chemical stability, antiacid alkali resistant, corrosion resistance is to work as this life
One of corrosion resistance optimal material in boundary, meanwhile, polytetrafluoroethylene (PTFE) has the characteristics that resistant to high temperature, its coefficient of friction is extremely low,
So leading to the problem of for it solves many of the fields such as chemical industry, petroleum, pharmacy after can making lubricating action, however due to poly-
The self character of tetrafluoroethene makes brittleness high, is unlikely to deform, so that its using effect is affected, in addition, existing polytetrafluoro
Ethylene manufacturing method is unreasonable, so that how process costs are very high, therefore improve its changeability, improving using effect is one long
Phase needs the technical problem solved.
Summary of the invention
The present invention is intended to provide a kind of production method of polytetrafluoroethylene (PTFE).
The invention provides the following technical scheme:
A kind of production method of polytetrafluoroethylene (PTFE), includes the following steps:
(1) coupling agent treatment talcum powder is used, by polyethylene and treated talcum powder and polyimides, polyacrylamide
Amine, filler calcium carbonate, lubricant silica material are mixed；
(2) mixing material is granulated in dual-screw-stem machine, by master batch and polytetrafluoroethylene (PTFE), polybenzoate, dispersing agent and idol
Connection agent, which be uniformly mixed preparing to be blended, carries out melting extrusion spinning, carries out medium temperature to spun filament and stores 2-3 minutes, then carries out
It is 10-15 minutes air-cooled, then liquid cooling is carried out after feeding back by high temperature, stretch processing is carried out after cooling, passes through heating after stretching
It carries out shaping；
(3) the prefabricated compression polytetrafluoroethylene (PTFE) of compressor is used, is formed with outer surface in compression process evenly arranged convex
It rises, fibrous layer is coated on outside polytetrafluoroethylene (PTFE) by the pultrusion that is heating and curing.
The coupling agent is bis- (3- (triethoxysilicane) propyl) tetrasulfides or γ-aminopropyltriethoxy diethoxy silicon
Alkane.
It is described heating carry out shaping be by heater first 380-420 DEG C at a temperature of preheated, then in 500-
It is sintered under 550 DEG C of hot conditions, obtains polytetrafluoroethylene (PTFE) finally by air-cooled slow cooling.
Compared with prior art, the beneficial effects of the present invention are: the present invention is mixed by lubricant silica material
It closes and is granulated and subsequent process especially has been carried out to spinning at the same time with polytetrafluoroethylene (PTFE) melting extrusion spinning, by
This not only increases deformability, and makes its product by the selection of reasonable component and to the reasonable control of technological temperature
High-quality and manufacturing cost is low to be reduced.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
A kind of production method of polytetrafluoroethylene (PTFE) of embodiment, includes the following steps:
(1) coupling agent treatment talcum powder is used, by polyethylene and treated talcum powder and polyimides, polyacrylamide
Amine, filler calcium carbonate, lubricant silica material are mixed；
(2) mixing material is granulated in dual-screw-stem machine, by master batch and polytetrafluoroethylene (PTFE), polybenzoate, dispersing agent and idol
Connection agent, which be uniformly mixed preparing to be blended, carries out melting extrusion spinning, carries out medium temperature to spun filament and stores 2-3 minutes, then carries out
It is 10-15 minutes air-cooled, then liquid cooling is carried out after feeding back by high temperature, stretch processing is carried out after cooling, passes through heating after stretching
It carries out shaping；
(3) the prefabricated compression polytetrafluoroethylene (PTFE) of compressor is used, is formed with outer surface in compression process evenly arranged convex
It rises, fibrous layer is coated on outside polytetrafluoroethylene (PTFE) by the pultrusion that is heating and curing.
The coupling agent is bis- (3- (triethoxysilicane) propyl) tetrasulfides or γ-aminopropyltriethoxy diethoxy silicon
Alkane.
It is described heating carry out shaping be by heater first 380-420 DEG C at a temperature of preheated, then in 500-
It is sintered under 550 DEG C of hot conditions, obtains polytetrafluoroethylene (PTFE) finally by air-cooled slow cooling.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the exemplary embodiment, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit require rather than it is described illustrate to limit, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.In addition, it should be understood that although this specification is described in terms of embodiments, but it is not each
Embodiment only contains an independent technical solution, and this description of the specification is merely for the sake of clarity, this field
Technical staff should consider the specification as a whole, and the technical solutions in the various embodiments may also be suitably combined, form this
The other embodiments that field technical staff is understood that.
Claims (3)
1. a kind of production method of polytetrafluoroethylene (PTFE), which comprises the steps of:
(1) coupling agent treatment talcum powder is used, by polyethylene and treated talcum powder and polyimides, polyacrylamide, is filled out
Fill agent calcium carbonate, lubricant silica material is mixed；
(2) mixing material is granulated in dual-screw-stem machine, by master batch and polytetrafluoroethylene (PTFE), polybenzoate, dispersing agent and coupling agent
Be uniformly mixed preparing to be blended and carry out melting extrusion spinning, medium temperature is carried out to spun filament and is stored 2-3 minutes, is then carried out air-cooled
10-15 minutes, then liquid cooling is carried out after feeding back by high temperature, stretch processing is carried out after cooling, is carried out after stretching by heating
Sizing；
(3) the prefabricated compression polytetrafluoroethylene (PTFE) of compressor is used, so that outer surface is formed with evenly arranged protrusion in compression process, it will
Fibrous layer is coated on outside polytetrafluoroethylene (PTFE) by the pultrusion that is heating and curing.
2. a kind of production method of polytetrafluoroethylene (PTFE) according to claim 1, it is characterised in that: the coupling agent is double
(3- (triethoxysilicane) propyl) tetrasulfide or γ-aminopropyltriethoxy diethoxy silane.
3. a kind of production method of polytetrafluoroethylene (PTFE) according to claim 1, it is characterised in that: the heating carries out shaping
Be by heater first 380-420 DEG C at a temperature of preheated, then burnt under 500-550 DEG C of hot conditions
Knot, obtains polytetrafluoroethylene (PTFE) finally by air-cooled slow cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246623.1A CN109487351A (en) | 2018-10-25 | 2018-10-25 | A kind of production method of polytetrafluoroethylene (PTFE) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246623.1A CN109487351A (en) | 2018-10-25 | 2018-10-25 | A kind of production method of polytetrafluoroethylene (PTFE) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109487351A true CN109487351A (en) | 2019-03-19 |
Family
ID=65691454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811246623.1A Pending CN109487351A (en) | 2018-10-25 | 2018-10-25 | A kind of production method of polytetrafluoroethylene (PTFE) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109487351A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115382401A (en) * | 2022-09-16 | 2022-11-25 | 苏州优可发新材料科技有限公司 | High-strength PTFE filter membrane and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6582634B2 (en) * | 1998-05-07 | 2003-06-24 | Peri-Dent Limited | Process of making a yarn |
| CN106012062A (en) * | 2016-08-02 | 2016-10-12 | 苏州耐德新材料科技有限公司 | Continuous polytetrafluoroethylene filaments and production method thereof |
| CN107471698A (en) * | 2017-08-22 | 2017-12-15 | 镇江春环密封件集团有限公司 | A kind of production method of polyfluortetraethylene pipe |
| CN107699975A (en) * | 2017-09-29 | 2018-02-16 | 镇江春环密封件集团有限公司 | A kind of production method of polytetrafluoroethylene (PTFE) |
-
2018
- 2018-10-25 CN CN201811246623.1A patent/CN109487351A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6582634B2 (en) * | 1998-05-07 | 2003-06-24 | Peri-Dent Limited | Process of making a yarn |
| CN106012062A (en) * | 2016-08-02 | 2016-10-12 | 苏州耐德新材料科技有限公司 | Continuous polytetrafluoroethylene filaments and production method thereof |
| CN107471698A (en) * | 2017-08-22 | 2017-12-15 | 镇江春环密封件集团有限公司 | A kind of production method of polyfluortetraethylene pipe |
| CN107699975A (en) * | 2017-09-29 | 2018-02-16 | 镇江春环密封件集团有限公司 | A kind of production method of polytetrafluoroethylene (PTFE) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115382401A (en) * | 2022-09-16 | 2022-11-25 | 苏州优可发新材料科技有限公司 | High-strength PTFE filter membrane and preparation method thereof |
| CN115382401B (en) * | 2022-09-16 | 2023-11-14 | 苏州优可发新材料科技有限公司 | High-strength PTFE filter membrane and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190319 |