CN101209574B - Preparation method of teflon microporous film baseband - Google Patents
Preparation method of teflon microporous film baseband Download PDFInfo
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- CN101209574B CN101209574B CN2006101578851A CN200610157885A CN101209574B CN 101209574 B CN101209574 B CN 101209574B CN 2006101578851 A CN2006101578851 A CN 2006101578851A CN 200610157885 A CN200610157885 A CN 200610157885A CN 101209574 B CN101209574 B CN 101209574B
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- ptfe
- polytetrafluoroethylene
- charge bar
- base band
- microporous film
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000004809 Teflon Substances 0.000 title claims description 32
- 229920006362 Teflon® Polymers 0.000 title claims description 32
- 239000002904 solvent Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 54
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 54
- -1 polytetrafluoroethylene Polymers 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 15
- 210000001161 mammalian embryo Anatomy 0.000 claims description 12
- 210000000038 chest Anatomy 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000011236 particulate material Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 229920006361 Polyflon Polymers 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 239000003350 kerosene Substances 0.000 abstract 2
- 239000004615 ingredient Substances 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000004888 barrier function Effects 0.000 description 7
- 210000004379 membrane Anatomy 0.000 description 6
- 238000003490 calendering Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a preparation method of a polyfluortetraethylene micro-porous film baseband, belonging to the chemical technical field, particularly relates to the processing technical field of micro-porous polyfluortetraethylene film. The invention comprises the processing steps that polyfluortetraethylene resin powder is mixed with solvent which is number 3 aviation kerosene and isoparaffin; the proportion for uniform mixing among the three ingredients of the polyfluortetraethylene, the number 3 aviation kerosene and the isoparaffin is 1: 0.1-0.15: 0.2-0.3 according to weight percentage; the mixture is statically arranged under the temperature environment of 40-65 DEG C, then dumped into a pre-pressing forming machine, uniformly and slowly pressed into polyfluortetraethylene material rods under the pressure of 50kg-180kg and sent to a thrust press; the mixture then sequentially enters all rollers with the temperature ranging from 30-180 DEG C; the uniformity and width of the thickness of the baseband are adjusted through a baseband uniformity automatic control system to generate the polyfluortetraethylene micro-porous film baseband which is coiled by a coiler. The finished product of the invention has high uniformity and improves the utilization ratio of finished product micro-porous film.
Description
Technical field:
The present invention relates to a kind of preparation method of teflon microporous film baseband, it belongs to chemical technology field, particularly relates to the processing technique field of expanded microporous polytetra fluoroethylene-EPTEE film.
Background technology:
The expanded microporous polytetra fluoroethylene-EPTEE film is a kind of macromolecular material, characteristics with high-low temperature resistant, acid and alkali-resistance, stable performance, be commonly called as the plastics king, microporous membrane and composite thereof have functions such as good Waterproof Breathable, wind-proof warming, obstruct bacterium, filtration micronic dust, can be widely used in outdoor exercises clothes, army's police uniform, protective garment, and air filtration, water purification etc., development rapidly obtained in the international market.The production method of existing expanded microporous polytetra fluoroethylene-EPTEE film mainly is the production technology of biaxial tension microporous teflon membran, introduced a kind of preparation method of polytetrafluoroethylporous porous membrane as patent CN.1151350A, the microporous teflon membran production method of present domestic comparative maturity is similar, the main method of biaxial tension that adopts is produced, earlier polytetrafluoroethylene (PTFE) material powder is pressed into base band by calender, to roll good base band then by biaxial tension, make 1.6 meters to 1.8 meters wide microporous barriers, owing in biaxial orientation process, used thickness control system, in the expanding process, controlled the uniformity and thickness preferably.In addition, in the Chinese patent the 02108850.0th, disclose a kind of " microporous teflon membran and manufacture method thereof ", be characterized in that decentralized polyflon and the weight proportion that takes off the aromatic hydrocarbon isoparaffin are 100: 20～40; Before carrying out longitudinal stretching, the broadband place 100～200 ℃ lubricating auxiliary agent to be removed clean earlier; Under computer control, carry out horizontal biaxial tension, place 250 ℃～400 ℃ following thermal finalizations through the microporous barrier of biaxial tension.This technology also belongs to the biaxial tension technical scope.Be basis as biaxial tension, very crucial effect has also been played in being manufactured on of base band in the microporous barrier production, existing base band manufacturing technology has become the bottleneck that improves the microporous barrier quality, be mainly reflected in following aspect, (1) in the base band manufacture process, still reach the purpose of the control uniformity, make the actual product base band that manufactures not reach requirement by the gap of manual adjustment pressure roller; (2) existing manufacturing equipment is used in the compound of garment material and can produces bigger waste because the problem of die size is had only between 100 meters-200 meters the microporous barrier single hop of final generation, improves production cost.
Summary of the invention:
The object of the present invention is to provide a kind of base band uniformity and production technology of can guaranteeing simple, can finish the preparation method of the teflon microporous film baseband of fabric width broad.
The object of the present invention is achieved like this:
A kind of preparation method of teflon microporous film baseband, it comprises following processing step:
A) with teflon resin powder and solvent, described solvent is No. 3 aviation kerosines and isoparaffin, above-mentioned three kinds of compositions are in polytetrafluoroethylene (PTFE): No. 3 aviation kerosines: the ratio of isoparaffin is that 1: 0.1～0.15: 0.2～0.3 weight proportion evenly mixes, under 40 ℃～65 ℃ temperature environments, leave standstill, make it abundant mixing, make the hybrid particles raw material;
B) pour the above-mentioned particulate material that mixes into premoulding press, evenly slowly it is pressed into the polytetrafluoroethylene (PTFE) charge bar with the pressure of 50kg～180kg;
C) above-mentioned polytetrafluoroethylene (PTFE) charge bar is delivered to the pushing machine, further extruding, enter temperature each roller between 30 ℃～180 ℃ successively, regulate the thickness uniformity and the width of base band, generate teflon microporous film baseband and carry out rolling by winder by base band uniformity automatic control system;
The mould diameter of employed system charge bar is at 12～32cm, and length is 100cm～200cm, and the material thorax size of employed premoulding press, type embryo knockout machine, pushing machine is also corresponding to be 12cm～32cm at diameter, and length is 100cm～200cm.
Selection process method of the present invention is:
A) with teflon resin powder and solvent, described solvent is No. 3 aviation kerosines and isoparaffin, above-mentioned three kinds of compositions are in polytetrafluoroethylene (PTFE): No. 3 aviation kerosines: the ratio of isoparaffin is that 1: 0.1: 0.2 weight proportion evenly mixes, under 45 ℃～55 ℃ temperature environments, leave standstill, make it abundant mixing, make the hybrid particles raw material;
B) pour the above-mentioned particulate material that mixes into premoulding press, evenly slowly it is pressed into the polytetrafluoroethylene (PTFE) charge bar with the pressure of 70kg～160kg;
C) above-mentioned polytetrafluoroethylene (PTFE) charge bar is delivered to the pushing machine, further extruding, enter temperature each roller between 30 ℃～180 ℃ successively, regulate the thickness uniformity and the width of base band, generate teflon microporous film baseband and carry out rolling by winder by base band uniformity automatic control system;
The mould diameter of employed system charge bar is at 12～32cm, and length is 100cm～200cm, and the material thorax size of employed premoulding press, type embryo knockout machine, pushing machine is also corresponding to be 12cm～32cm at diameter, and length is 100cm～200cm.
Another selection process method of the present invention is:
A) with teflon resin powder and solvent, described solvent is No. 3 aviation kerosines and isoparaffin, above-mentioned three kinds of compositions are in polytetrafluoroethylene (PTFE): No. 3 aviation kerosines: the ratio of isoparaffin is that 1: 0.15: 0.3 weight proportion evenly mixes, under 50～65 ℃ of temperature environments, leave standstill, make it abundant mixing, make the hybrid particles raw material;
B) pour the above-mentioned particulate material that mixes into premoulding press, evenly slowly it is pressed into the polytetrafluoroethylene (PTFE) charge bar with the pressure of 100kg～180kg;
C) above-mentioned polytetrafluoroethylene (PTFE) charge bar is delivered to the pushing machine, further extruding, enter temperature each roller between 30 ℃～180 ℃ successively, regulate the thickness uniformity and the width of base band, generate teflon microporous film baseband and carry out rolling by winder by base band uniformity automatic control system.
The mould diameter of employed system charge bar is at 12～32cm, and length is 100cm～200cm, and the material thorax size of employed premoulding press, type embryo knockout machine, pushing machine is also corresponding to be 12cm～32cm at diameter, and length is 100cm～200cm.
The molecular weight of described polyflon is 2,000,000～8,000,000.
Described base band uniformity automatic control system comprises employing optics thickness measuring system, industrial control system and stepper motor; With optics thickness measuring system access industrial control system, the thickness data input that utilizes the optics thickness measuring system to gather is fed back output through industrial control system and stepper motor again, regulates the uniformity of base band.
The described polytetrafluoroethylene (PTFE) charge bar specification that is pressed into by premoulding press is diameter: 12cm～32cm, and length: 100cm～200cm takes out charge bar by type embryo knockout machine then.
Charge bar is delivered to the pushing machine, and preheating is 5～80 minutes between 30 ℃～80 ℃, further pushes then.
The present invention can improve the utilization rate of finished product microporous barrier greatly so that the length of the microporous teflon membran of single hop is promoted to more than 300 meters by more than 100 meters, has reduced production cost; By base band uniformity control system, changed manual inexactness and poor efficiency, make microporous barrier transverse regularity error less than 2%, promoted the uniformity of finished product greatly, improved quality.
The specific embodiment:
Below in conjunction with embodiment, the present invention is further detailed:
Embodiment 1:
Process described in the present embodiment is as follows:
A) with molecular weight at 2,000,000-8,000,000 teflon resin powder and solvent, described solvent is No. 3 aviation kerosines and isoparaffin, by polytetrafluoroethylene (PTFE): No. 3 aviation kerosines: the part by weight of isoparaffin is that 1: 0.1: 0.2 proportioning is evenly mixed, under 45 ℃-55 ℃, leave standstill, time made it abundant mixing between 24 hours.
B) pour the particle that mixes into premoulding press, evenly slowly it is pressed into the polytetrafluoroethylene (PTFE) charge bar with the pressure of 75kg-80kg, the press time is 25 minutes, the precompressed temperature is 65 ℃, generate diameter at 12cm, length is taken out charge bar by type embryo knockout machine at 100cm.
C) charge bar is put into gently pushing machine material thorax, preheating is 40 minutes between 50～60 ℃, further push then, be squeezed into the thinner charge bar of diameter 2cm～10cm, entering the roller of temperature between 30～180 ℃ rolls, by roller charge bar is rolled into base band, 10cm～50cm place placement 350 line thickness industrial the camera system of sampling above the calendering base band, gather the deviation signal and the width signal of the thickness of calendering base band in real time, sampling period is between 0.5 second to 50 seconds, enter Industrial Control Computer by the OPC agreement, and by Fuzzy control system adjusting executing agency, regulate the gap of going up lower compression roller by stepper motor, to reach the purpose of regulating the base band uniformity, the speed of travel of polytetrafluoroethylene (PTFE) base band is selected arbitrarily 1 second to 5 seconds and feed back the whole periodic Control of output from the collection signal to executing agency between 0.1 meter to 3 meters of per seconds, make automatic control can easily realize uniformity control, generate teflon microporous film baseband and carry out rolling by winder simultaneously.By uniformity regulating system, generate 100～200 microns of thickness, the base band that width is 200～300 millimeters is mainly used in to filter and uses microporous teflon membran.
In the present embodiment, the mould diameter that is used to make charge bar is at 12～32cm, length 100cm-200cm, and premoulding press, type embryo knockout machine, the material thorax size of pushing machine is also corresponding to be 12～32cm at diameter, length is 100cm～200cm.
Embodiment 2:
In the present embodiment, its process is as follows:
Drafting and producing thickness is 100 microns, and width is 200 millimeters a base band, and the mould diameter of system charge bar is at 12cm, length 100cm, and premoulding press, type embryo knockout machine, the material thorax size of pushing machine is also corresponding to be 12cm at diameter, length is 100cm.
A) with molecular weight at 2,000,000-8,000,000 teflon resin powder and solvent, described solvent is No. 3 aviation kerosines and isoparaffin, by polytetrafluoroethylene (PTFE): No. 3 aviation kerosines: the part by weight of isoparaffin is that 1: 0.1: 0.2 proportioning is evenly mixed, leave standstill under 55 ℃-65 ℃, the time exists
36Between hour, make it abundant mixing.
B) pour the particle that mixes into premoulding press, evenly slowly it is pressed into the polytetrafluoroethylene (PTFE) charge bar with the pressure of 100kg, the press time is 25 minutes, the precompressed temperature is 60 ℃, generate diameter at 12cm, length is taken out charge bar by type embryo knockout machine at 100cm.
C) charge bar is put into gently pushing machine material thorax, pre-waste heat is 30 minutes between 30～80 ℃, further pushes then, is squeezed into the thinner charge bar of diameter 2cm, enter the roller of temperature between 30～180 ℃ and roll, charge bar is rolled into base band by roller.
Other parts and the embodiment 1 of present embodiment are identical.
Embodiment 3:
In the present embodiment, its process is as follows:
Drafting and producing thickness is 200 microns, and width is 300 millimeters a base band, and the mould diameter of system charge bar is at 32cm, length 200cm, and premoulding press, type embryo knockout machine, the material thorax size of pushing machine is also corresponding to be 32cm at diameter, length is 200cm.
A) with molecular weight at 2,000,000-8,000,000 teflon resin powder and solvent, described solvent is No. 3 aviation kerosines and isoparaffin, by polytetrafluoroethylene (PTFE): No. 3 aviation kerosines: the part by weight of isoparaffin is that 1: 0.15: 0.3 proportioning is evenly mixed, leave standstill under 40 ℃-55 ℃, the time exists
48Between hour, make it abundant mixing.
B) pour the particle that mixes into premoulding press, evenly slowly it is pressed into the polytetrafluoroethylene (PTFE) charge bar with the pressure of 160kg, the press time is 25 minutes, the precompressed temperature is 60 ℃, generate diameter at 32cm, length is taken out charge bar by type embryo knockout machine at 200cm.
C) charge bar is put into gently pushing machine material thorax, pre-waste heat is 80 minutes between 30～80 ℃, further pushes then, is squeezed into the thinner charge bar of diameter 20cm, enter the roller of temperature between 30～180 ℃ and roll, charge bar is rolled into base band by roller.
Other parts and the embodiment 1 of present embodiment are identical.
Claims (6)
1. the preparation method of a teflon microporous film baseband is characterized in that it comprises following processing step:
A) with teflon resin powder and solvent, described solvent is No. 3 aviation kerosines and isoparaffin, above-mentioned three kinds of compositions are in polytetrafluoroethylene (PTFE): No. 3 aviation kerosines: the ratio of isoparaffin is that 1: 0.1～0.15: 0.2～0.3 weight proportion evenly mixes, under 40 ℃～65 ℃ temperature environments, leave standstill, make it abundant mixing, make the hybrid particles raw material;
B) pour the above-mentioned particulate material that mixes into premoulding press, evenly slowly it is pressed into the polytetrafluoroethylene (PTFE) charge bar with the pressure of 50kg～180kg;
C) by type embryo knockout machine charge bar is taken out, the polytetrafluoroethylene (PTFE) charge bar is delivered to the pushing machine, further extruding, enter temperature each roller between 30 ℃～180 ℃ successively, regulate the thickness uniformity and the width of base band by base band uniformity automatic control system, generate teflon microporous film baseband and carry out rolling by winder;
The mould diameter of employed system charge bar is at 12～32cm, and length is 100cm～200cm, and the material thorax size of employed premoulding press, type embryo knockout machine, pushing machine is also corresponding to be 12cm～32cm at diameter, and length is 100cm～200cm.
2. the preparation method of the teflon microporous film baseband described in claim 1.It is characterized in that its further process is:
A) with teflon resin powder and solvent, described solvent is No. 3 aviation kerosines and isoparaffin, above-mentioned three kinds of compositions are in polytetrafluoroethylene (PTFE): No. 3 aviation kerosines: the ratio of isoparaffin is that 1: 0.1: 0.2 weight proportion evenly mixes, under 45 ℃～55 ℃ temperature environments, leave standstill, make it abundant mixing, make the hybrid particles raw material;
B) pour the above-mentioned particulate material that mixes into premoulding press, evenly slowly it is pressed into the polytetrafluoroethylene (PTFE) charge bar with the pressure of 70kg～160kg;
C) above-mentioned polytetrafluoroethylene (PTFE) charge bar is delivered to the pushing machine, further extruding, enter temperature each roller between 30 ℃～180 ℃ successively, regulate the thickness uniformity and the width of base band, generate teflon microporous film baseband and carry out rolling by winder by base band uniformity automatic control system.
3. the preparation method of the teflon microporous film baseband described in claim 1.It is characterized in that process is:
A) with teflon resin powder and solvent, described solvent is No. 3 aviation kerosines and isoparaffin, above-mentioned three kinds of compositions are in polytetrafluoroethylene (PTFE): No. 3 aviation kerosines: the ratio of isoparaffin is that 1: 0.15: 0.3 weight proportion evenly mixes, under 50～65 ℃ of temperature environments, leave standstill, make it abundant mixing, make the hybrid particles raw material;
B) pour the above-mentioned particulate material that mixes into premoulding press, evenly slowly it is pressed into the polytetrafluoroethylene (PTFE) charge bar with the pressure of 100kg～180kg;
C) above-mentioned polytetrafluoroethylene (PTFE) charge bar is delivered to the pushing machine, further extruding, enter temperature each roller between 30 ℃～180 ℃ successively, regulate the thickness uniformity and the width of base band, generate teflon microporous film baseband and carry out rolling by winder by base band uniformity automatic control system;
4. the preparation method of the teflon microporous film baseband described in claim 1 or 2 or 3, the molecular weight that it is characterized in that described polyflon is 2,000,000～8,000,000.
5. the preparation method of the teflon microporous film baseband described in claim 1 or 2 or 3 is characterized in that base band uniformity automatic control system comprises employing optics thickness measuring system, industrial control system and stepper motor; With optics thickness measuring system access industrial control system, the thickness data input that utilizes the optics thickness measuring system to gather is fed back output through industrial control system and stepper motor again, regulates the uniformity of base band.
6. the preparation method of the teflon microporous film baseband described in claim 1 or 2 or 3 is characterized in that charge bar is delivered to the pushing machine, and preheating is 5～80 minutes between 30 ℃～80 ℃, further pushes then.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101578851A CN101209574B (en) | 2006-12-25 | 2006-12-25 | Preparation method of teflon microporous film baseband |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101578851A CN101209574B (en) | 2006-12-25 | 2006-12-25 | Preparation method of teflon microporous film baseband |
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| CN101209574A CN101209574A (en) | 2008-07-02 |
| CN101209574B true CN101209574B (en) | 2011-05-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103213270A (en) * | 2013-04-09 | 2013-07-24 | 天津市天塑科技集团有限公司技术中心 | Automatic production method of polytetrafluoroethylene (PTFE) dispersion resin |
| CN105522721A (en) * | 2016-02-01 | 2016-04-27 | 天津市天塑科技集团有限公司 | Preparation method of polytetrafluoroethylene heat-exchange tube |
| CN109867892A (en) * | 2019-03-26 | 2019-06-11 | 段瑶瑶 | A kind of preparation method with using the strongly adherent tetrafluoroethylene resin of polyurethane |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044616A (en) * | 1989-01-30 | 1990-08-15 | 上海市有机氟材料研究所 | Production process of oil-free stretch polytetrafluoroethylraw raw material band |
| CN1392180A (en) * | 2002-07-02 | 2003-01-22 | 上海优天高新材料有限公司 | Process for producing microporous polytetrafluorethylene film |
-
2006
- 2006-12-25 CN CN2006101578851A patent/CN101209574B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044616A (en) * | 1989-01-30 | 1990-08-15 | 上海市有机氟材料研究所 | Production process of oil-free stretch polytetrafluoroethylraw raw material band |
| CN1392180A (en) * | 2002-07-02 | 2003-01-22 | 上海优天高新材料有限公司 | Process for producing microporous polytetrafluorethylene film |
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