CN101642960A - Preparation method of polytetrafluoroethylene thread seal tape film for communication cable - Google Patents
Preparation method of polytetrafluoroethylene thread seal tape film for communication cable Download PDFInfo
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- CN101642960A CN101642960A CN200910192079A CN200910192079A CN101642960A CN 101642960 A CN101642960 A CN 101642960A CN 200910192079 A CN200910192079 A CN 200910192079A CN 200910192079 A CN200910192079 A CN 200910192079A CN 101642960 A CN101642960 A CN 101642960A
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- 238000004891 communication Methods 0.000 title claims abstract description 31
- 229920001343 polytetrafluoroethylene Polymers 0.000 title abstract description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 title abstract description 11
- -1 polytetrafluoroethylene Polymers 0.000 title abstract description 10
- 238000002360 preparation method Methods 0.000 title abstract description 4
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 30
- 239000006185 dispersion Substances 0.000 claims description 28
- 239000011347 resin Substances 0.000 claims description 28
- 229920005989 resin Polymers 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 23
- 239000000835 fiber Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 238000003490 calendering Methods 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 230000035800 maturation Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000009417 prefabrication Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 239000000463 material Substances 0.000 description 8
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 8
- 229920001410 Microfiber Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003658 microfiber Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The invention discloses a preparation method of polytetrafluoroethylene thread seal tape film for communication cable, comprising the following steps: proportioning and pretreating, performing, bulldozing, rolling, drawing, orienting, second drawing and forming and cutting and winding. The polytetrafluoroethylene thread seal tape film prepared by the invention has good comprehensive performance and particularly has very low dielectric constant and dielectric loss angle tangent; the thread seal tape film can not be affect by the changes of frequency and temperature so as to effectively reduce the attenuation and loss of transmission and greatly improve the transmission rate; in addition, the prepared communication cable has good softness and humidity resistance and can be used for a long time at -65 DEG C to 260 DEG C.
Description
Technical field
The present invention relates to a kind of low-loss communication insulating materials, be specially a kind of manufacture method of polytetrafluoroethylthread thread seal tape film for communication cable.
Background technology
The insulating barrier of communication cable is the important component part in the construction of cable.Present insulating barrier takes all factors into consideration decay, through-put power, bear requirement such as voltage, can be divided into entity insulation, air insulation and the three kinds of forms of edge of drawing last breath in midair on structure.But above three kinds of forms still have the following disadvantages: 1, the used dielectric material of entity insulation is more, and dielectric constant is big, and particularly the loss of signal in medium is directly proportional with frequency, and when frequency was very high, signal attenuation was very big; 2, air-insulated shortcoming is that proof voltage is lower, and because outer conductor adopts tubular structure usually, so flexibility is relatively poor; 3, the employed foamed polyethylene of edge of drawing last breath in midair is to use foamed dielectric material the most widely, because poly temperature tolerance is poor, and heat endurance and poor chemical stability, the through-put power of bearing is lower, makes its scope of application enjoy restriction.Along with the continuous development of microwave communication and civilian intelligent microwave instrument, more and more higher to the requirement of the transmission attenuation of communication cable and loss, existing insulating layer material can not satisfy the demands.
Summary of the invention
The objective of the invention is deficiency at the above communication cable insulating layer existence, give full play to the characteristic of polytetrafluoroethylene (PTFE), provide a kind of have good electric insulating properties, proof voltage, high-low temperature resistant, ageing-resistant, soft, moistureproof, the manufacture method that can reduce the polytetrafluoroethylthread thread seal tape film for communication cable of cable transmission decay and loss characteristic, for the insulating barrier of communication cable provides extremely desirable making material.
The present invention is achieved in that the manufacture method of polytetrafluoroethylthread thread seal tape film for communication cable, and it making step that comprises is as follows:
One, batching and preliminary treatment:
(1) in view of polytetrafluoroethyldispersion dispersion resin the multiple trade mark is arranged, the polytetrafluoroethyldispersion dispersion resin of the different trades mark has different molecular weight distribution and other characteristic, the present invention is by screening, select to use molecular weight at 300-500 ten thousand, particle diameter is 480-520um, and the standard relative density is 2.15-2.18, moisture content≤0.03%, hot strength 〉=34Mpa, the polytetrafluoroethyldispersion dispersion resin of elongation at break 〉=400%; 1., can bear high compression ratio adopt the effect of polytetrafluoroethyldispersion dispersion resin to be:; 2., can guarantee the draw ratio that reaches certain; 3., the tensile strength that guarantees final products is than higher, can reach specific (special) requirements;
(2), polytetrafluoroethyldispersion dispersion resin is refrigerated 18-28h at 8-15 ℃, at dust-free workshop raw material is sieved with 8-10 purpose sieve then, to stop the influence of dust to electrical property;
(3), the polytetrafluoroethyldispersion dispersion resin after will sieving mixes with the boosting agent, leaves standstill 8-10h; The weight portion proportioning of polytetrafluoroethyldispersion dispersion resin and boosting agent is: polytetrafluoroethyldispersion dispersion resin 60～90, boosting agent 10～30; It is the boosting agent of ISOPAR G that the model that emerging capable petrochemical industry Co., Ltd produces is given birth to by Heyuan City, Guangdong Province that described boosting agent preferred surface tension force is 23.5Mn/m;
(4), leave standstill after, compound is stirred, rotating speed is 15-20r/min, the time is 10-20min; The boosting agent is evenly mixed with raw material.
(5), the raw material that stirs, leave standstill 10-12h, the boosting agent is permeated to raw material, carry out maturation process at 50 ℃-70 ℃ then, the time is 20-24h; Maturation process can be to carry out slaking in baking oven, and the purpose of slaking is to make the boosting agent to further fully infiltration of raw material by heating.
Two, be 2.5～3.8Mpa at pressure; Compression speed is 45-75mm/min, and the dwell time is that preformed makes the tubular blank under the 1-8min; Preformed equipment can be hydraulic power unit, about the diameter little 1mm of the diameter in its blank chamber than pushing material chamber.
Three, the tubular blank is pushed, through cutting into fibre strip; A pushing mouthful mould material cavity temperature is controlled at 50 ℃～70 ℃, and the cone angle of the pushing mould that pushes is 38～48 degree, and compression ratio is 80～150; Wherein, compression ratio is the sectional area (S) in material chamber and the ratio of the sectional area (S ') of mouthful mould.Concrete formula is: R.R (compression ratio)=S/S '=D
2/ d
2(to the circular port mould);
Four, fibre strip is carried out two roll-ins and prolong, roller temperature is controlled at 50 ℃～70 ℃ during calendering, and rolling velocity is controlled at 0.5～5m/min, make fiber alignment become flat sheet, and rolling is neat;
Five, at 250-330 ℃ below the temperature, the flat sheet prefabrication of making through calendering is stretched, and handle the back and obtain to have node, the mutual cross connecting structure of fiber through thermal finalization, bigger constrictive porous article is arranged, begin to take shape the aperture.Porous article after the calendering enters dry section B district through drive roll and removes the boosting agent, the temperature of dry section B is at 100-200 ℃, the stretch section of forming through second roller, the 3rd roller, the 4th roller the 5th roller stretches then, form draw ratio at 3-5 doubly by differential between each roller, draft temperature is in 250-330 ℃ of scope.The roller spacing of described stretch section is at 10-15mm, and the diameter of each roller is 200mm.
Six, orientation
Stretched polytetrafluoroethylthread thread seal tape film is being suppressed by two-roll calendar, and purpose is to make fiber reorientation arrangement in the vertical, reduces the portion size tolerance simultaneously, improves the dimensional accuracy of raw material film.
Seven, succeeding stretch typing forms uniform aperture, and stable the maintenance.
The succeeding stretch method for shaping is as follows: enter heat set zone and carry out thermal finalization after the prefabrication of orientation is stretched, temperature is in 330-380 ℃ of scope; Enter the cooling and shaping district then, temperature be controlled at carry out under 5-15 ℃ cold formed.
Eight, splitting winding: after cutting machine carries out splitting winding.
The present invention can inter-tradely enlarge the application of raw material band.The communication cable that the present invention the makes combination property of polytetrafluoroethylraw raw material band film, particularly have very low dielectric constant and dielectric loss angle tangent, simultaneously not influenced by frequency and variation of temperature, reduced the decay and the loss of transmission effectively, improved the speed of transmission greatly; In addition, the communication cable flexibility that makes is good, humidity resistance is good, uses for a long time-65 ℃ of-260 ℃ of temperature ranges.
Description of drawings
Fig. 1 is the process chart of the preparation method of polytetrafluoroethylthread thread seal tape film for communication cable of the present invention;
Fig. 2 is the structural representation of pushing mould;
Fig. 3 is the drawing process schematic diagram of the preparation method of polytetrafluoroethylthread thread seal tape film for communication cable of the present invention.
The specific embodiment
Be described in detail below in conjunction with the manufacture method of drawings and Examples polytetrafluoroethylthread thread seal tape film for communication cable of the present invention.
The manufacture method of polytetrafluoroethylthread thread seal tape film for communication cable, as shown in Figure 1, it making step that comprises is as follows:
1, batching and preliminary treatment:
(1) in view of polytetrafluoroethyldispersion dispersion resin the multiple trade mark is arranged, the polytetrafluoroethyldispersion dispersion resin of the different trades mark has different molecular weight distribution and other characteristic, the present invention is by screening, select to use molecular weight at 300-500 ten thousand, particle diameter is 480-520um, and the standard relative density is 2.15-2.18, moisture content≤0.03%, hot strength 〉=34Mpa, the polytetrafluoroethyldispersion dispersion resin of elongation at break 〉=400%; 1., can bear high compression ratio the effect that this polytetrafluoroethyldispersion dispersion resin has is:; 2., can guarantee the draw ratio that reaches certain; 3., the tensile strength that guarantees final products is than higher, can reach specific (special) requirements;
(2), polytetrafluoroethyldispersion dispersion resin is refrigerated 18-28h at 8-15 ℃, preferably refrigerate 24 hours, at dust-free workshop raw material is sieved with 8-10 purpose sieve then, to stop the influence of dust to electrical property; The preferred time of refrigeration is 24h.
(3), the polytetrafluoroethyldispersion dispersion resin after will sieving mixes with the boosting agent, leaves standstill 8-10h; The weight portion proportioning of polytetrafluoroethyldispersion dispersion resin and boosting agent is: polytetrafluoroethyldispersion dispersion resin 60～90, boosting agent 10～30; It is the boosting agent of ISOPAR G that the model that emerging capable petrochemical industry Co., Ltd produces is given birth to by Heyuan City, Guangdong Province that described boosting agent preferred surface tension force is 23.5Mn/m.The preferred weight portion proportioning of polytetrafluoroethyldispersion dispersion resin and boosting agent is: polytetrafluoroethyldispersion dispersion resin 70～80, boosting agent 20～30.
(4), leave standstill after, polytetrafluoroethyldispersion dispersion resin and boosting agent composition are stirred, the rotating speed of stirring is 15-20r/min, the time is 10-20min; The boosting agent is further evenly mixed with polytetrafluoroethyldispersion dispersion resin.
(5), the polytetrafluoroethyldispersion dispersion resin mixture that stirs is left standstill 10-12h, the boosting agent is permeated to raw material, carry out maturation process at 50 ℃-70 ℃ then, the time is 20-24h; Maturation process can be to carry out slaking in baking oven, and the purpose of slaking is to make the boosting agent to further fully infiltration of raw material by heating.
2, be 2.5～3.8Mpa at pressure; Compression speed is 45-75mm/min, and the dwell time is that preformed makes the tubular blank under the 1-8min.Preformed equipment can be hydraulic power unit, and the diameter in its blank chamber is than the little 1mm of diameter in pushing material chamber.
3, the tubular blank is pushed, through cutting into fibre strip.A pushing mouthful mould material cavity temperature is controlled at 50 ℃～70 ℃, and the cone angle of the pushing mould that pushes is 38～48 degree, and compression ratio is 80～150; Wherein, as shown in Figure 2, compression ratio is the sectional area (S) in material chamber 11 and the ratio of the sectional area (S ') of mouthful mould 13.Concrete formula is: R.R (compression ratio)=S/S '=D
2/ d
2(to the circular port mould).
4, fibre strip is carried out two roll-ins and prolong, roller temperature is controlled at 50 ℃～70 ℃ during calendering, and rolling velocity is controlled at 0.5～5m/min, make fiber alignment become flat sheet, and rolling is neat;
5, at 250-330 ℃ below the temperature, the flat sheet prefabrication of making through calendering is carried out drawing and setting, obtain to have node, the mutual cross connecting structure of fiber, bigger constrictive porous article is arranged.
As shown in Figure 3, porous article A after the calendering is through drive roll 1, enter dry section B, the temperature of dry section B is generally in 100-200 ℃ of scope, porous article A drive roll 1 and second roller 2 exist remove the boosting agent under certain tension force after, become the basis band that has hole, this moment, the hole of basis band mesopore was few, and porosity is also low.After removing the boosting agent, stretch through second roller 2, the 3rd roller 3, the 4th roller 4 and the 5th roller 5, form draw ratio by differential between each roller, goods are stretched, at this moment the microfibre orientation that is stretched in the band, form hole between the microfibre, the junction of fibre bundle is node, the size in the pore size decision aperture between the microfibre, the quantity of node and size then have influence on percent opening, draw ratio, draft temperature and stretching spacing have the greatest impact to aperture and porosity, and low then draw ratio of general temperature and rate of extension all are subjected to certain limitation.When temperature raise, macromolecular chain was easily deformable, and draw ratio and speed all can correspondingly improve, and along with the rising of temperature, the aperture of product increases, and porosity increases, and the stretching spacing is big, and then the aperture is little.When porous article A makes longitudinal stretching, laterally can cause contraction, distance is big more, shrinks severely more, and the polytetrafluoroethylene (PTFE) microfibre is close to each other because of contraction, and the aperture is diminished, and porosity is also corresponding to diminish; Be controlled at 3-5 doubly through putting into practice draw ratio, draft temperature is in 250-330 ℃ of scope, best temperature is that the spacing of roller of the stretch section formed of 327 ℃ of second roller 2, the 3rd roller 3, the 4th roller 4 and the 5th roller 5 is at 10-15mm, the diameter of each roller is 200mm, can obtain best aperture and porosity effect.
6, orientation
Stretched polytetrafluoroethylthread thread seal tape film is being suppressed by two-roll calendar, and purpose is to make fiber reorientation arrangement in the vertical, reduces the portion size tolerance simultaneously, improves the dimensional accuracy of raw material film.
7, succeeding stretch typing
As shown in Figure 3, through directed polytetrafluoroethylthread thread seal tape film, intensity is not high yet, and standing time, bigger contraction took place in long slightly meeting, so how to stablize the aperture and size is extremely important, the present invention adopts succeeding stretch, thermal finalization and cooling and shaping to reach optimum efficiency.Succeeding stretch is through second roller 2, the 3rd roller 3, the 4th roller 4 and the 5th roller 5 stretch, form draw ratio by differential between each roller, goods are stretched, goods after the stretching enter heat set zone C through the 6th roller 6, the heat set zone temperature is in 330-380 ℃ of scope, thermal finalization is heat-treated the product that has stretched, reduce degree of crystallinity, the amorphous region is increased, play the effect of " amorphous interlinkage ", the 5th roller 5 and the 6th roller 6 are with speed, the 6th roller 6 and the 7th roller 7 keep certain force of strain, enter cooling and shaping district D through the 7th roller 7 and the 8th roller 8 again, and temperature is controlled at 5-15 ℃, the 7th roller 7, the 8th roller 8, the 9th roller 9 and the tenth roller 10 keep certain constant-tension, and be laggard as rolling E through the tenth roller 10; Finally reaching microcellular structure can keep getting off, and dimensional stability, intensity all can improve greatly, forms the goods with certain pore size, porosity.One-off drawing is to begin to take shape the aperture, and succeeding stretch is in order to form uniform aperture, and stable the maintenance.
8, splitting winding: carry out splitting winding through cutting machine.
Technological process of the present invention is through batching and preliminary treatment → preformed → pushing → calendering → stretching → orientation → succeeding stretch typing → splitting winding, make at last have the good electric insulating properties, proof voltage, high-low temperature resistant, ageing-resistant, soft, moistureproof, can reduce that cable transmission decays and the polytetrafluoroethylthread thread seal tape film for communication cable of loss characteristic.
Production environment of the present invention requires high, need produce under dustless environment; The control of process parameters strictness of producing need be controlled at very little deviation range, and any big difference all can produce very big influence to transmission performance.The communication cable that the present invention the makes combination property of poly tetrafluoroethylene, particularly have very low dielectric constant and dielectric loss angle tangent, simultaneously not influenced by frequency and variation of temperature, reduced the decay and the loss of transmission effectively, improved the speed of transmission greatly; In addition, the communication cable flexibility that makes is good, humidity resistance is good, can use for a long time-65 ℃ of-260 ℃ of temperature ranges.
The communication cable that the present invention the makes detection data such as the following table of poly tetrafluoroethylene:
| Project name | Technical indicator |
| Dielectric constant | ??1.2-1.6 |
| Dielectric loss | ??＜0.0002 |
| Limited oxygen index (%) | ??＞95 |
| Operating temperature (℃) | ??-65～260 |
| Fusing point (℃) | ??320-340 |
The communication cable that the present invention the makes decay nominal value such as the following table of poly tetrafluoroethylene:
| ??F(GHz) | ??1 | ??6 | ??18 | ??26 | ??40 |
| ??(a?Db/m) | ??0.41 | ??0.96 | ??1.74 | ??2.16 | ??2.74 |
| ??0.27 | ??0.62 | ??1.16 | ??1.54 | ||
| ??0.17 | ??0.43 | ??0.83 |
When regulation when test that cable is pressed 4.7.10 among the GJB973A-2004, the return loss of the cable (specimen length is 6m) that makes with poly tetrafluoroethylene with communication cable of the present invention is not less than following table institute indicating value:
| Frequency range (GHz) | ??0.05-4 | ??4-8 | ??8-18 | ??18-26 |
| Return loss value (dB) | ??17.7 | ??15.6 | ??14.0 | ??12.7 |
Claims (6)
1, the manufacture method of polytetrafluoroethylthread thread seal tape film for communication cable is characterized in that, the making step that comprises is as follows:
One, batching and preliminary treatment:
(1) selects polytetrafluoroethyldispersion dispersion resin to refrigerate 18-28h, at dust-free workshop raw material is sieved with 8-10 purpose sieve then at 8-15 ℃;
(2), the polytetrafluoroethyldispersion dispersion resin after will sieving mixes with the boosting agent, leaves standstill 8-10h; The weight portion proportioning of polytetrafluoroethyldispersion dispersion resin and boosting agent is: polytetrafluoroethyldispersion dispersion resin 60～90, boosting agent 10～30;
(3), polytetrafluoroethyldispersion dispersion resin and boosting agent composition after leaving standstill stir, the rotating speed of stirring is 15-20r/min, the time is 10-20min;
(4), polytetrafluoroethyldispersion dispersion resin and the boosting agent blend mixture that stirs left standstill 10-12h, carry out maturation process at 50 ℃-70 ℃ then, the time is 20-24h;
Two, be 2.5～3.8Mpa at pressure; Compression speed is 45-75mm/min, and the dwell time is that preformed makes the tubular blank under the 1-8min;
Three, the tubular blank is pushed, through cutting into fibre strip;
Four, fibre strip is rolled, roller temperature is controlled at 50 ℃～70 ℃ during calendering, and rolling velocity is controlled at 0.5～5m/min;
Five, the flat sheet prefabrication of making through calendering is stretched;
Six, suppressing orientation by two-roll calendar;
Seven, succeeding stretch typing;
Eight, splitting winding.
2, as the manufacture method of claim polytetrafluoroethylthread thread seal tape film for communication cable, it is characterized in that: it is the boosting agent of ISOPAR G that the model that emerging capable petrochemical industry Co., Ltd produces is given birth to by Heyuan City, Guangdong Province that described boosting agent preferred surface tension force is 23.5Mn/m.
3, as the manufacture method of claim polytetrafluoroethylthread thread seal tape film for communication cable, it is characterized in that: the molecular weight of described polytetrafluoroethyldispersion dispersion resin is at 300-500 ten thousand, particle diameter is 480-520um, the standard relative density is 2.15-2.18, moisture content≤0.03%, hot strength 〉=34Mpa, elongation at break 〉=400%.
4, as the manufacture method of claim polytetrafluoroethylthread thread seal tape film for communication cable, it is characterized in that: in described the 5th step, porous article after the calendering enters dry section B district through drive roll and removes the boosting agent, the temperature of dry section B is at 100-200 ℃, the stretch section of forming through second roller, the 3rd roller, the 4th roller the 5th roller stretches then, form draw ratio at 3-5 doubly by differential between each roller, draft temperature is in 250-330 ℃ of scope.
5, as the manufacture method of claim polytetrafluoroethylthread thread seal tape film for communication cable, it is characterized in that: the roller spacing of described stretch section is at 10-15mm, and the diameter of each roller is 200mm.
6, as the manufacture method of claim polytetrafluoroethylthread thread seal tape film for communication cable, it is characterized in that: the succeeding stretch method for shaping of described the 7th step is as follows: enter heat set zone and carry out thermal finalization after the prefabrication of orientation is stretched, temperature is in 330-380 ℃ of scope; Enter the cooling and shaping district then, temperature be controlled at carry out under 5-15 ℃ cold formed.
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|---|---|---|---|
| CN200910192079A CN101642960B (en) | 2009-09-04 | 2009-09-04 | Preparation method of polytetrafluoroethylene thread seal tape film for communication cable |
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|---|---|---|---|
| CN200910192079A CN101642960B (en) | 2009-09-04 | 2009-09-04 | Preparation method of polytetrafluoroethylene thread seal tape film for communication cable |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921553A (en) * | 2010-07-02 | 2010-12-22 | 四会市封王氟塑有限公司 | Teflon insulating self-adhesive tape and application method thereof |
| CN102431176A (en) * | 2011-12-02 | 2012-05-02 | 常州市东新华福氟塑材料有限公司 | Complete equipment for manufacturing polytetrafluoroethylene oriented films and method thereof |
| CN104972682A (en) * | 2014-04-04 | 2015-10-14 | 青岛远东富隆新材料有限公司 | Production method and product of energy-saving polytetrafluoroethylene tube used for flue gas afterheat heat exchanger |
| CN111645345A (en) * | 2020-05-25 | 2020-09-11 | 天津渤海万业科技有限公司 | High-strength polytetrafluoroethylene cable film and preparation method thereof |
| CN111805869A (en) * | 2020-06-30 | 2020-10-23 | 南京玻璃纤维研究设计院有限公司 | Thread inner wall extrusion die and method for improving fiberization degree of film material rod |
| CN111976173A (en) * | 2019-05-24 | 2020-11-24 | 安徽省众望科希盟科技有限公司 | Preparation process of unidirectional stretching polytetrafluoroethylene film |
| CN113043620A (en) * | 2021-03-29 | 2021-06-29 | 浙江格尔泰斯环保特材科技股份有限公司 | Preparation method of polytetrafluoroethylene film with ultrahigh air permeability |
-
2009
- 2009-09-04 CN CN200910192079A patent/CN101642960B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| 顾元栋: "聚四氟乙烯生料带的加工", 《塑料科技》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921553A (en) * | 2010-07-02 | 2010-12-22 | 四会市封王氟塑有限公司 | Teflon insulating self-adhesive tape and application method thereof |
| CN101921553B (en) * | 2010-07-02 | 2013-09-04 | 肇庆市大旺台旺门窗厂 | Teflon insulating self-adhesive tape and application method thereof |
| CN102431176A (en) * | 2011-12-02 | 2012-05-02 | 常州市东新华福氟塑材料有限公司 | Complete equipment for manufacturing polytetrafluoroethylene oriented films and method thereof |
| CN104972682A (en) * | 2014-04-04 | 2015-10-14 | 青岛远东富隆新材料有限公司 | Production method and product of energy-saving polytetrafluoroethylene tube used for flue gas afterheat heat exchanger |
| CN111976173A (en) * | 2019-05-24 | 2020-11-24 | 安徽省众望科希盟科技有限公司 | Preparation process of unidirectional stretching polytetrafluoroethylene film |
| CN111645345A (en) * | 2020-05-25 | 2020-09-11 | 天津渤海万业科技有限公司 | High-strength polytetrafluoroethylene cable film and preparation method thereof |
| CN111805869A (en) * | 2020-06-30 | 2020-10-23 | 南京玻璃纤维研究设计院有限公司 | Thread inner wall extrusion die and method for improving fiberization degree of film material rod |
| CN111805869B (en) * | 2020-06-30 | 2022-04-15 | 南京玻璃纤维研究设计院有限公司 | Thread inner wall extrusion die and method for improving fiberization degree of film material rod |
| CN113043620A (en) * | 2021-03-29 | 2021-06-29 | 浙江格尔泰斯环保特材科技股份有限公司 | Preparation method of polytetrafluoroethylene film with ultrahigh air permeability |
| CN113043620B (en) * | 2021-03-29 | 2024-06-07 | 浙江格尔泰斯环保特材科技股份有限公司 | Preparation method of polytetrafluoroethylene film with ultrahigh air permeability |
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| CN101642960B (en) | 2012-08-29 |
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