CN103612463B - PTFE composite plate set composite and method - Google Patents
PTFE composite plate set composite and method Download PDFInfo
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- CN103612463B CN103612463B CN201310577812.8A CN201310577812A CN103612463B CN 103612463 B CN103612463 B CN 103612463B CN 201310577812 A CN201310577812 A CN 201310577812A CN 103612463 B CN103612463 B CN 103612463B
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Abstract
The invention discloses a kind of set composite and method of fluoroplastics, provide a kind of not viscosity that thoroughly can change fluoroplastics, make the existing superior corrosion resistance of PTFE sheet material, PTFE composite plate set composite and the method for bonding compound can be carried out again with other materials, solve the PTFE sheet material treatment technology existed in prior art and be just confined to surface treatment, surface active layer easily lost efficacy, backing layer is made to have peeled off drum, even the technical problems such as serious accident are caused time serious, it comprises be set up in parallel first, two drying tunnels, PTFE plate unreeling machine and composite membrane unreeling machine is provided with side by side at the arrival end of the first drying tunnel, the first drying tunnel is synchronously imported through base material constant speed connecting gear after PTFE plate and composite membrane overlap, glass-fiber-fabric unreeling machine is provided with at the arrival end of the second drying tunnel, first, calender is provided with between the port of export of two drying tunnels, from first drying tunnel derive PTFE plate and composite membrane overlapping with the glass fabric of deriving from the second drying tunnel after through calender extrude merge after form PTFE composite plate, PTFE composite plate is wrapped on wind-up roll through cooling body again.
Description
Technical field
The present invention relates to a kind of set composite and method of fluoroplastics, particularly relate to a kind of not viscosity that thoroughly can change fluoroplastics, make PTFE sheet material both have superior corrosion resistance, PTFE composite plate set composite and the method for bonding compound can be carried out with other materials again.
Background technology
PTFE is as a kind of macromolecular material of function admirable, it has excellent chemical stability, electrical insulating property, the extremely low coefficient of kinetic friction, nonflammable, resistance to chemical attack and higher mechanical strength, be widely used in all trades and professions, especially the lining of anticorrosion equipment, but because PTFE material wettability is poor, can not infiltrate by adhesive, thus limit its application, people start to research and develop the process can improving its surface property for this reason, existing PTFE sheet material treatment technology is just confined to surface treatment, process thickness only has about 0.005mm, if be subject to the impact of powerful illumination or temperature, surface active layer can lose efficacy, combined strength bination reduces greatly, be especially in use in the ISOTANK that is able to bear strong corrosion and be lining with, because chemical liquid jolting in length transportation springs up shock, the backing layer made and metal shell have peeled off drum, the transport of harmful influence must be caused to leak just in case lining is torn, thus cause great calamitous security incident.
Chinese patent discloses a kind of PTFE plate activation treatment equipment and method (CN102888011A) thereof, it comprises airtight activation process room, let off roll and wind-up roll is respectively equipped with in the both sides of activation process outdoor, corresponding to, the activation process between let off roll and wind-up roll is indoor is sequentially arranged with constant speed connecting gear, activation process mechanism and flushing machine, PTFE plate on let off roll through respective side activation process locular wall face after successively through constant speed connecting gear, be wrapped on wind-up roll through activation process locular wall face corresponding to wind-up roll side after activation process mechanism and flushing machine.Although this PTFE plate activating treatment method has, energy-conserving and environment-protective, surface active quality are good, efficiency advantages of higher; but the method also belongs to PTFE plate surface treatment method; therefore same exist surface active layer when being subject to the affecting of powerful illumination or temperature and easily lost efficacy; combined strength bination is reduced greatly; thus make backing layer peel off drum; not only can cause the leakage of harmful influence, time serious, even cause serious accident.
Summary of the invention
The present invention mainly provides a kind of not viscosity that thoroughly can change fluoroplastics; PTFE sheet material is made both to have had superior corrosion resistance; PTFE composite plate set composite and the method for bonding compound can be carried out again with other materials; solve the PTFE sheet material treatment technology existed in prior art and be just confined to surface treatment; when being subject to the affecting of powerful illumination or temperature, surface active layer easily lost efficacy; combined strength bination is reduced greatly; thus make backing layer peel off drum; not only can cause the leakage of harmful influence, time serious, even cause the technical problems such as serious accident.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: a kind of PTFE composite plate set composite, comprise the first drying tunnel and the second drying tunnel that are set up in parallel, the PTFE plate unreeling machine being wrapped PTFE plate and the composite membrane unreeling machine being wrapped composite membrane is provided with side by side at the arrival end of the first drying tunnel, the first drying tunnel is synchronously imported through base material constant speed connecting gear after PTFE plate and composite membrane overlap, the glass-fiber-fabric unreeling machine being wrapped glass fabric is provided with at the arrival end of the second drying tunnel, calender is provided with between the port of export of the first drying tunnel and the second drying tunnel, from first drying tunnel derive PTFE plate and composite membrane overlapping with the glass fabric of deriving from the second drying tunnel after through calender extrude merge after form PTFE composite plate, PTFE composite plate is wrapped on wind-up roll again after cooling body cooling.By the first drying tunnel by more than PTFE surface heating to fusing point, composite membrane (PFA or fep film) is heated to more than fusing point and with the fusing face phase compound of PTFE, then by the second drying tunnel, the glass fabric of corrosion-and high-temp-resistant is added to uniform temperature, by calender the PTFE plate surface heat at itself and composite membrane place forced together again and form PTFE composite plate, finally be wrapped in after cooling body cools again on wind-up roll, PTFE composite plate has possessed simultaneously is able to bear strong corrosion and high anti-permeability performance, can carry out good bonding with other materials again, during corrosion-proof lining for high-end electronic chemicals complete set of equipments, after its lining, the peel strength of lining and equipment inner wall is greater than 5N/mm, safe and reliable, thus change the not viscosity of fluoroplastics thoroughly.
Drive roll can adopt other kinds of drive such as Chain conveyer, as preferably, described constant speed connecting gear comprises drive roll and tangent and can the driven voller of vertical lift with drive roll, drive roll is connected to belt gear, clamps by drive roll and driven voller after composite membrane and PTFE plate overlap and extend horizontally in the first drying tunnel.The constant speed connecting gear be made up of drive roll and drive roll, structure is simple, and can ensure that composite membrane and PTFE plate synchronous uniform velocity run; Driven voller can be convenient to the installation of composite membrane and PTFE plate and regulate clamping force during vertical lift; Belt gear drives drive roll, and structure is simply easy to manufacture, easy to installation and maintenance, and cost is lower, can relax shock and vibration at work, stable movement noiselessness simultaneously.
As preferably, described first drying tunnel comprises the first horizontal pipe body and parallel the first far-infrared heating tube interted in the first horizontal pipe body, several the first drying tunnel guide rollers horizontal vertically in the below of the first far-infrared heating tube, PTFE plate level is supported on the first drying tunnel guide roller, and composite membrane is adjacent with the first far-infrared heating tube and be coaxially laid in the top of PTFE plate.Far-infrared heating tube has fabulous thermal infrared performance, and has the features such as electric heating conversion efficiency is high, energy-efficient performance strong, long service life, ensures PTFE plate and composite membrane intensification uniformity; PTFE plate level is supported on the first drying tunnel guide roller, avoids the stretcher strain under gravity of PTFE plate, and can reduce PTFE plate running resistance.
As more preferably, air inlet is provided with below the first drying tunnel guide roller that the described first horizontal pipe body port of export is corresponding, air inlet is communicated with on air blast, above the first far-infrared heating tube that the first horizontal pipe body arrival end is corresponding, be provided with exhaust vent, exhaust vent is communicated with on exhaust-gas treatment room.While to the heating of PTFE composite surface, wind cooling temperature lowering is carried out by the non-composite face of air blast to PTFE, make the non-composite face of PTFE temperature in the depth bounds of 1.5mm remain on less than 300 °, avoid the non-composite face of PTFE due to temperature rise too high and reduce its decay resistance and anti-permeability performance; Be communicated with exhaust vent on exhaust-gas treatment room, the waste gas that in temperature rise, PTFE plate and composite membrane produce can be made rationally to be disposed, improve production environment, and can environmental pollution be reduced.
As preferably, described second drying tunnel comprises the second horizontal pipe body and parallel the second far-infrared heating tube interted in the second horizontal pipe body, several the second drying tunnel guide rollers horizontal vertically in the below of the second far-infrared heating tube, in the first drying tunnel near the port of export composite membrane above be provided with glass-fiber-fabric guide-in roller, glass fabric by the first drying tunnel guide roller horizontal through above the backward lower composite membrane being flattened on the first drying tunnel port of export place through glass-fiber-fabric guide-in roller of the second horizontal pipe body.Glass fabric can be heated in the first drying tunnel, for the ease of simplifying the heating effect of structure and guarantee PTFE plate, composite membrane and glass fabric, glass fabric is independently provided with the second drying tunnel and carries out heat temperature raising, and glass fabric is beneficial to the fusion of itself and PTFE plate after heating up; Glass fabric is imported in the first drying tunnel by glass-fiber-fabric guide-in roller, avoids producing temperature drop in recombination process, guarantees composite quality.
Also can by the temperature regulating the rotating speed of glass-fiber-fabric unreeling machine to control glass fabric, as preferably, the parallel top being positioned at the first drying tunnel of described second drying tunnel, the second drying tunnel is mutually concordant with the port of export of the first drying tunnel, and the length of the second drying tunnel is 2/3 to 1/2 of the first drying tunnel length.Glass fabric temperature rise is too high or too low to be all unfavorable for can ensureing the fusion of itself and PTFE plate that glass fabric temperature rise is in setting range by the length reducing the second drying tunnel, save drying tunnel deployment cost.
As preferably, described calender comprises middle drive roll and tangent and can the lower drive roll of vertical lift and upper drive roll with middle drive roll, clamp by lower drive roll and middle drive roll after glass fabric, composite membrane and PTFE plate overlap that the first drying tunnel is derived, more upwards clamp by forming PTFE composite plate after middle drive roll and upper drive roll.Three-roller calendar form is vertical type, and transmission is gear-box Worm Wheel System, and structure is simple, can ensure that PTFE composite plate is fully extruded after compound, namely fuse fully, ensure composite quality further; Three rollers tractions also can individually regulate, also can adjusted in concert, make roller drive coordination consistent, and upper, middle and lower three roller spacing adopts oil cylinder to control to rise and decline, and is convenient to the installation of PTFE composite plate and regulates clamping force.
As more preferably, described middle drive roll and lower drive roll are connected to heater.Centre wherein and lower drive roll adopt outside heat-conducting oil heating mode to heat, configuring external conduction oil die heater is connected swivel joint with conduction oil, by centrifugal oil pump to cylinder heat cycles, upper cylinder is water cold drum, configuration water-cooling swivel joint, middle drive roll and lower drive roll are hot-rolling, upper drive roll is cold roller, make by high crystallization, the PTFE composite plate of high impermeabilisation process can not due to compound heat after quick cooling and destroy original high anti-permeability performance, thus composite plate has been possessed simultaneously be able to bear strong corrosion, high anti-permeability performance again can high-quality composite plate together with other materials good bonding.
Adopt a manufacture method for PTFE composite plate, comprise following sequential steps:
1) the PTFE plate of drum, composite membrane and glass fabric are separately fixed on PTFE plate unreeling machine, composite membrane unreeling machine and glass-fiber-fabric unreeling machine, and will are fixed on wind-up roll after the end overlap of three;
2) the first drying tunnel, the second drying tunnel power supply and the air blast be communicated with at the first drying tunnel port of export is started;
3) transfer roller clamping force corresponding on constant speed connecting gear and calender is adjusted to setting value;
4) regulate in the first drying tunnel and correspond to temperature above and below PTFE plate to setting value.
5) synchronous averaging PTFE plate unreeling machine, composite membrane unreeling machine, glass-fiber-fabric unreeling machine, constant speed connecting gear, calender and wind-up roll, guarantees PTFE plate, composite membrane and the synchronous operation of glass fabric constant speed.
The full-automatic continuous production processes flow process of Combined Mining: PTFE plate and PFA (or fep film) and glass fabric put on corresponding automatic unreeling machine respectively → by the sheet material hauling machine on front side of wind-up roll draw enter corresponding drying tunnel → drying tunnel PTFE plate is heated respectively with PFA (or fep film) and glass fabric → glass fabric from drying tunnel out after superpose with PFA (or FEP) with drying tunnel PTFE plate out, then by calender, hot pressing compression formation PTFE composite plate → PTFE composite plate is carried out under hot by trimming and cooling and shaping → carry out rolling to finished product finally by automatic coiling machine to product; PTFE and glass fabric adopt PFA or FEP as intermediate layer, make the PTFE sheet material after compound thoroughly improve not viscosity, are greater than 5N/mm with peel strength after the compound of steel.
As preferably, in described first drying tunnel, the temperature corresponded to above PTFE plate is greater than the melting point values of PTFE plate, and the temperature below PTFE plate is less than 300 DEG C.Two drying tunnels adopt infrared heating, temperature fluctuation≤± 1 DEG C, make the temperature on PTFE plate top reach more than fusing point (365 DEG C to 385 DEG C), temperature of lower ensures to be less than 300 °, avoid the non-composite face of PTFE plate due to temperature rise too high and reduce its decay resistance and anti-permeability performance.
Therefore, PTFE composite plate set composite of the present invention and method have following advantage:
1) excellent composite performance, PTFE composite plate will cause combined strength bination to decline because of the passing of time; (activation process plate store under the condition of storage of lucifuge also must not more than 1 year), combined strength bination is high, and after lining, the peel strength of lining and equipment inner wall is greater than 5N/mm;
2) excellent anti-permeability performance, composite base material selects modified ptfe, and its density is greater than 2.19, and crystallization degree is high, and anti-permeability performance is excellent, is 1.5 times of common PTFE plate;
3) good welding performance, weld seam hot strength is high, is 1.5 times of common PTFE weld strength.
accompanying drawing illustrates:
Fig. 1 is the structural representation of PTFE composite plate set composite of the present invention;
Fig. 2 is the structural representation of calender in the present invention.
detailed description of the invention:
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
As shown in Figure 1, a kind of PTFE composite plate set composite of the present invention, comprise the first drying tunnel 3 and the second drying tunnel 4 be set up in parallel, the parallel top being positioned at the first drying tunnel 3 of second drying tunnel 4, its length is 60% of the first drying tunnel 3 length, and both ports of export are mutually concordant, at the arrival end of the first drying tunnel 3, the composite membrane unreeling machine 6 that a PTFE plate unreeling machine 2 being wrapped PTFE plate 1 and are wrapped composite membrane 5 is installed side by side, composite membrane 5 is wherein PFA film, composite membrane unreeling machine 6 is upper, PTFE plate unreeling machine 2 is at lower vertical runs, at the arrival end of the first drying tunnel 3 and be provided with constant speed connecting gear between PTFE plate unreeling machine 2 and composite membrane unreeling machine 6, constant speed connecting gear comprises again drive roll 71 and with tangent and can the driven voller 72 of vertical lift, driven voller 72 is positioned at the top of drive roll 71, drive roll 71 is driven by belt gear, clamp by drive roll 71 and driven voller 72 after composite membrane 5 and PTFE plate about 1 overlap simultaneously and extend horizontally in the first drying tunnel 3, the glass-fiber-fabric unreeling machine 11 that one is wrapped glass fabric 9 is provided with at the arrival end of the second drying tunnel 4, calender 10 is provided with between the port of export of the first drying tunnel 3 and the second drying tunnel 4, the first drying tunnel 3 wherein comprises the first horizontal pipe body 31 of straight tube-like and parallelly interts the first far-infrared heating tube 32 in the first horizontal pipe body 31, several the first drying tunnel guide rollers 33 horizontal vertically in the below of the first far-infrared heating tube 32, in the first drying tunnel 3, above the first drying tunnel guide roller 33 of the port of export, a glass-fiber-fabric guide-in roller 37 is housed, air inlet 34 is had below the first drying tunnel guide roller 33 that first horizontal pipe body 31 port of export is corresponding, air inlet 34 by pipeline communication on air blast 35, exhaust vent 36 is had above the first far-infrared heating tube 32 that the first horizontal pipe body 31 arrival end is corresponding, exhaust vent 36 again by pipeline communication on exhaust-gas treatment room.The second drying tunnel 4 wherein comprises the second horizontal pipe body 41 and parallelly interts the second far-infrared heating tube 42 in the second horizontal pipe body 41, several the second drying tunnel guide rollers 43 horizontal vertically in the below of the second far-infrared heating tube 42, PTFE plate 1 horizontal support is on the first drying tunnel guide roller 33, composite membrane 5 is adjacent with the first far-infrared heating tube 32 and be coaxially laid on PTFE plate 1, glass fabric 9 extends to the interior also horizontal support of the second drying tunnel 4 on the second drying tunnel guide roller 43, and extend in the first drying tunnel 3 vertically downward when near second drying tunnel 4 port of export, the glass fabric 9 entering the first drying tunnel 3 is walked around again glass-fiber-fabric guide-in roller 37 and is extended to the port of export of the first drying tunnel 3, and glass fabric 9 is flattened on the top of composite membrane 5, as shown in Figure 2, calender 10 comprises the upper drive roll 103 of vertically arrangement, middle drive roll 101 and lower drive roll 102, upper drive roll 103 and lower drive roll 102 are tangent with middle drive roll 101 respectively and can vertical lift, middle drive roll 101 wherein and lower drive roll 102 are the hot-rolling of heat-conducting oil heating, upper drive roll 103 is water cooled rolls, glass fabric 9, after composite membrane 5 and PTFE plate 1 synchronously derive the first drying tunnel 3, clamping is by lower drive roll 102 and middle drive roll 101, upwards clamp again to be merged by extruding after middle drive roll 101 and upper drive roll 103 and form PTFE composite plate 12 and export to trimmer and carry out trimming shaping, enter cooling body 8 again to lower the temperature further, finally be wrapped on wind-up roll 13.
During production, comprise following sequential steps:
1) respectively the PTFE plate 1 of drum, composite membrane 5 and glass fabric 9 are fixed on PTFE plate unreeling machine 2, composite membrane unreeling machine 6 and glass-fiber-fabric unreeling machine 11, PTFE plate 1, composite membrane 5 is pulled to enter the first drying tunnel 3 through constant speed connecting gear again, glass fabric 9 is pulled to enter the second drying tunnel 4, three derives after collecting in again the port of export of the first drying tunnel 3 simultaneously, then is wrapped on wind-up roll 13 through calender 1 and cooling body 80;
2) the first drying tunnel 3, second drying tunnel 4, air blast 35 is started;
3) adjust constant speed connecting gear, and make transfer roller clamping force corresponding on calender be 800 kilograms;
4) above corresponding to PTFE plate 1 in the first drying tunnel 3, temperature reaches 365 DEG C to 385 DEG C, below temperature starts PTFE plate unreeling machine 2, composite membrane unreeling machine 6, glass-fiber-fabric unreeling machine 11, constant speed connecting gear, calender 10 and wind-up roll 13 when being less than 300 ° simultaneously, guarantees PTFE plate 1, composite membrane 5 and the synchronous operation of glass fabric 9 constant speed.
Specific embodiment described herein is only to design of the present invention explanation for example.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (8)
1. a PTFE composite plate set composite, it is characterized in that: comprise the first drying tunnel (3) and the second drying tunnel (4) that are set up in parallel, the PTFE plate unreeling machine (2) being wrapped PTFE plate (1) and the composite membrane unreeling machine (6) being wrapped composite membrane (5) is provided with side by side at the arrival end of the first drying tunnel (3), the first drying tunnel (3) is synchronously imported through base material constant speed connecting gear after PTFE plate (1) and composite membrane (5) overlap, the glass-fiber-fabric unreeling machine (11) being wrapped glass fabric (9) is provided with at the arrival end of the second drying tunnel (4), calender (10) is provided with between the port of export of the first drying tunnel (3) and the second drying tunnel (4), the PTFE plate (1) of deriving from the first drying tunnel (3) and composite membrane (5) overlapping with the glass fabric (9) of deriving from the second drying tunnel (4) after through calender (10) extrude merge after form PTFE composite plate (12), PTFE composite plate (12) is wrapped on wind-up roll (13) again after cooling body (8) cooling, described first drying tunnel (3) comprises the first horizontal pipe body (31) and parallel the first far-infrared heating tube (32) interted in the first horizontal pipe body (31), several the first drying tunnel guide rollers (33) horizontal vertically in the below of the first far-infrared heating tube (32), PTFE plate (1) horizontal support is on the first drying tunnel guide roller (33), and composite membrane (5) is adjacent with the first far-infrared heating tube (32) and be coaxially laid in the top of PTFE plate (1), described second drying tunnel (4) comprises the second horizontal pipe body (41) and parallel the second far-infrared heating tube (42) interted in the second horizontal pipe body (41), several the second drying tunnel guide rollers (43) horizontal vertically in the below of the second far-infrared heating tube (42), composite membrane (5) top near the port of export in the first drying tunnel (3) is provided with glass-fiber-fabric guide-in roller (37), glass fabric (9) by the second drying tunnel guide roller (43) horizontal through second horizontal pipe body (41) backward lower through glass-fiber-fabric guide-in roller (37) be flattened on the first drying tunnel (3) port of export place composite membrane (5) top.
2. PTFE composite plate set composite according to claim 1, it is characterized in that: described constant speed connecting gear comprises drive roll (71) and tangent and can the driven voller (72) of vertical lift with drive roll (71), (71) are connected to belt gear to drive roll, and composite membrane (5) and PTFE plate (1) overlap clamp by drive roll (71) and driven voller (72) afterwards and extend horizontally in the first drying tunnel (3).
3. PTFE composite plate set composite according to claim 1 and 2, it is characterized in that: first drying tunnel guide roller (33) below corresponding at described first horizontal pipe body (31) port of export is provided with air inlet (34), air inlet (34) is communicated with on air blast (35), first far-infrared heating tube (32) top corresponding at the first horizontal pipe body (31) arrival end is provided with exhaust vent (36), and exhaust vent (36) is communicated with on exhaust-gas treatment room.
4. PTFE composite plate set composite according to claim 1 and 2, it is characterized in that: the described parallel top being positioned at the first drying tunnel (3) of second drying tunnel (4), second drying tunnel (4) is mutually concordant with the port of export of the first drying tunnel (3), and the length of the second drying tunnel (4) is 2/3 to 1/2 of the first drying tunnel (3) length.
5. PTFE composite plate set composite according to claim 1 and 2, it is characterized in that: described calender (10) comprises middle drive roll (101) and tangent and can the lower drive roll (102) of vertical lift and upper drive roll (103) with middle drive roll (101), from the glass fabric (9) that the first drying tunnel (3) is derived, composite membrane (5) and the overlapping rear clamping of PTFE plate (1) are by lower drive roll (102) and middle drive roll (101), upwards clamp again and form PTFE composite plate (12) afterwards by middle drive roll (101) and upper drive roll (103).
6. PTFE composite plate set composite according to claim 5, is characterized in that: described middle drive roll (101) and lower drive roll (102) are connected to heater.
7. a manufacture method for PTFE composite plate according to claim 1, is characterized in that: comprise following sequential steps:
1) the PTFE plate (1) of drum, composite membrane (5) and glass fabric (9) are separately fixed on PTFE plate unreeling machine (2), composite membrane unreeling machine (6) and glass-fiber-fabric unreeling machine (11), and will are fixed on wind-up roll (13) after the end overlap of three;
2) air blast (35) starting the first drying tunnel (3), the second drying tunnel (4) power supply and be communicated with at the first drying tunnel (3) port of export;
3) the transfer roller clamping force of constant speed connecting gear and the upper correspondence of calender (10) is adjusted to setting value;
4) regulate in the first drying tunnel (3) and correspond to temperature above and below PTFE plate (1) to setting value;
5) synchronous averaging PTFE plate unreeling machine (2), composite membrane unreeling machine (6), glass-fiber-fabric unreeling machine (11), constant speed connecting gear, calender (10) and wind-up roll (13), guarantees PTFE plate (1), composite membrane (5) and glass fabric (9) constant speed synchronous operation.
8. the manufacture method of PTFE composite plate according to claim 7, is characterized in that: the temperature corresponding to PTFE plate (1) top in described first drying tunnel (3) is greater than the melting point values of PTFE plate (1), and the temperature of PTFE plate (1) below is less than 300 DEG C.
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| CN105017985B (en) * | 2015-07-24 | 2017-06-16 | 南通康尔乐复合材料有限公司 | Set composite |
| CN112516919B (en) * | 2020-11-17 | 2022-06-10 | 潘兆金 | High-temperature-resistant and negative-pressure-resistant polytetrafluoroethylene plate lining technology |
| CN113895124B (en) * | 2021-10-27 | 2023-04-25 | 温州赵氟隆有限公司 | Permeation-resistant fluoroplastic product, preparation method and permeation-resistant and corrosion-resistant container equipment |
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| JPS60115440A (en) * | 1983-11-29 | 1985-06-21 | 旭硝子株式会社 | Coating material |
| CN2110571U (en) * | 1991-08-15 | 1992-07-22 | 陈国龙 | High-strength polytetrafluorethylene welding composite cloth |
| CN2607250Y (en) * | 2003-01-28 | 2004-03-24 | 上品综合工业股份有限公司 | Composite fluororesin board structure |
| CN1520985A (en) * | 2003-01-28 | 2004-08-18 | 上品综合工业股份有限公司 | Method and apparatus for manufacturing fluoric resin composite panel |
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