CN115821399A - Spinning device for continuously compressing, exhausting and deoxidizing high-performance polyphenylene sulfide powder - Google Patents
Spinning device for continuously compressing, exhausting and deoxidizing high-performance polyphenylene sulfide powder Download PDFInfo
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- CN115821399A CN115821399A CN202211613722.5A CN202211613722A CN115821399A CN 115821399 A CN115821399 A CN 115821399A CN 202211613722 A CN202211613722 A CN 202211613722A CN 115821399 A CN115821399 A CN 115821399A
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- polyphenylene sulfide
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- sulfide powder
- conveying device
- deoxidizing
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- 239000000843 powder Substances 0.000 title claims abstract description 62
- 239000004734 Polyphenylene sulfide Substances 0.000 title claims abstract description 47
- 229920000069 polyphenylene sulfide Polymers 0.000 title claims abstract description 47
- 238000009987 spinning Methods 0.000 title claims abstract description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 64
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 31
- 238000007906 compression Methods 0.000 claims abstract description 25
- 230000006835 compression Effects 0.000 claims abstract description 25
- 238000007599 discharging Methods 0.000 claims abstract description 22
- 239000000155 melt Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 19
- 239000000428 dust Substances 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 abstract description 13
- 239000011347 resin Substances 0.000 abstract description 8
- 229920005989 resin Polymers 0.000 abstract description 8
- 238000003860 storage Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000010525 oxidative degradation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses a spinning device for continuously compressing, exhausting and deoxidizing high-performance polyphenylene sulfide powder, which comprises a rack, a storage bin, a weight metering device, a compression screw conveying device, a first discharging barrel, a second discharging barrel, a double screw conveying device, a nitrogen conveying pipeline, a melt metering device and a spinning assembly, wherein the storage bin is arranged at the top of the rack, the weight metering device is arranged at the lower side of the storage bin, one side of a discharging port of the weight metering device is communicated with the first discharging barrel, the top of the first discharging barrel is communicated with a first ventilating pipeline, the bottom of the first discharging barrel is connected with a feeding port of the compression screw conveying device, and one side of the discharging port of a compression screw is communicated with the second discharging barrel. The spinning device adopting the structure for continuously compressing, exhausting and deoxidizing the high-performance polyphenylene sulfide powder solves the problem that resin is oxidized and degraded to influence the quality of fibers due to the fact that air enters when the polyphenylene sulfide powder is melted in the spinning process.
Description
Technical Field
The invention relates to the technical field of polyphenylene sulfide spinning, in particular to a spinning device for continuously compressing, exhausting and deoxidizing high-performance polyphenylene sulfide powder.
Background
The polyphenylene sulfide (PPS) fiber grade powder material can be made into filament, short fiber and the like, and is widely applied to the fields of environmental protection, flue dust removal, high-temperature filtration of chemical industry, aerospace and the like, such as high-temperature flue filter bags of coal-fired boilers of thermal power plants, garbage incineration and the like, corrosion-resistant filter cloth in paper making and chemical industry, drying belts in electrical industry and needled felts, because the PPS fiber grade powder material has better textile processing performance and excellent chemical resistance, thermal stability, high-temperature resistance and flame retardance; a new energy battery diaphragm and a special cable coating layer; flame retardant fabrics in the aerospace industry, and the like.
In the prior art, the production of polyphenylene sulfide fiber spinning adopts a known two-step method, namely, PPS resin powder materials are granulated to form PPS resin granules, and the PPS resin granules are dried, dewatered, melt-extruded by a screw extruder and then enter a spinning manifold for melt spinning. According to the process flow of the two-step method, as the PPS powder needs to be granulated and dried at high temperature for a long time for water removal, oxidation and crosslinking are easily generated in the conventional granulation and long-time high-temperature drying processes, so that the fiber is deep in color, low in breaking strength and poor in quality, the fiber spinning production is influenced, the process links are multiple, the energy consumption is high, the efficiency is low, the raw material consumption is high, the stability of the fiber is poor, the preparation cost is high, and the requirements of current low-carbon economy are not met.
The existing polyphenylene sulfide resin synthetic products are basically powder, but the powder bulk density is about 0.7-0.35g/cm 3 Medium, low is only 0.35g/cm 3 The specific weight of the prepared fiber is about 1.35-1.38g/cm 3 In the process, the air in powder accumulation occupies more than 70 percent, the air exists among the powder small particles and is stored in the small particles, and the air directly enters the double screws along with the powder material during granulation to cause the oxidative degradation of the resin, so that the key of polyphenylene sulfide granulation, drying and spinning is how to reduce the air entrainment and prevent the oxidation.
Disclosure of Invention
The invention aims to provide a spinning device for continuously compressing, exhausting and deoxidizing polyphenylene sulfide powder with high performance, which solves the problem that the quality of fibers is affected by the oxidative degradation of resin caused by the air entering during the melting in the spinning process of the polyphenylene sulfide powder.
In order to achieve the purpose, the invention provides a spinning device for continuously compressing, exhausting and deoxidizing high-performance polyphenylene sulfide powder, which comprises a rack, a storage bin, a weight metering device, a compression screw conveying device, a first discharging barrel, a second discharging barrel, a double-screw conveying device, a nitrogen conveying pipeline, a melt meter and a spinning assembly, wherein the storage bin is arranged at the top of the rack;
the top of the second feeding barrel is communicated with the second vent pipe, the bottom of the second feeding barrel is connected with a feed inlet of a double-screw conveying device, a double-screw output device is arranged at the bottom of the rack, a first area of the double-screw conveying device is provided with an inflation inlet communicated with a nitrogen conveying pipeline, a nitrogen flow controller is arranged on the nitrogen conveying pipeline, a discharge outlet of the double-screw conveying device is connected with a discharge melt pipeline, a melt meter is arranged on the discharge melt pipeline, and a discharge outlet of the melt meter is connected with the spinning assembly.
Preferably, the weight measuring device is a screw conveyor with a weight meter.
Preferably, the first ventilation pipeline is sequentially provided with a first dust remover and a first filter, and one side of a discharge hole of the first filter is connected with the first air outlet pipe.
Preferably, a crusher is arranged at the joint of the compression screw conveying device and the second discharging barrel.
Preferably, a vibrator is arranged on the outer side wall of the second feeding barrel, and a plurality of sliding material plates which are arranged in a staggered mode are connected inside the second feeding barrel.
Preferably, the second ventilation pipeline is sequentially provided with a second dust remover and a second filter, one side of a discharge hole of the second filter is connected with the second air outlet pipe, and the second air outlet pipe is provided with an oxygen concentration detector.
The invention has the beneficial effects that:
(1) The invention feeds the powder into the compression screw by weight, thereby ensuring the continuous and effective compression and exhaust of the powder with different bulk densities. In production, the material amount required by production is detected through melt metering, and is fed back to the double screws, the compression screws, the powder metering and the coordinated speed regulation, so that the stable and continuous operation of production is ensured, meanwhile, the powder bulk density at the outlet of the compression screws is ensured to be basically consistent, and the purpose of stable compression and exhaust is achieved.
(2) The nitrogen and the materials flow in the reverse direction, and the compressed materials are crushed in the nitrogen, so that the contact specific surface area of the materials and the nitrogen is increased, and the exchange efficiency is improved. The powder slowly glides from the sliding plate, is fully contacted and exchanged with nitrogen, then falls to the sliding plate, the exchange time of the powder and the nitrogen is prolonged through the sliding plate, and the homogenization is realized through the falling of the last sliding plate to the next sliding plate, so that the air in the powder can be fully discharged, the powder is prevented from being oxidized when being extruded and melted for devolatilization, and the quality of fibers is improved.
(3) The method has the advantages of less process links, low energy consumption, high efficiency, low raw material consumption, good fiber stability, high quality of the prepared fiber, reduction of preparation cost and capability of meeting the current requirements of low-carbon economy.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a spinning device for continuously compressing, exhausting and deoxidizing polyphenylene sulfide powder with high performance.
Reference numerals are as follows:
1. a frame; 2. a storage bin; 3. a weight metering device; 4. a compression screw conveyor; 5. a first feeding barrel; 6. a feeding barrel II; 7. a twin-screw conveying device; 8. a nitrogen gas delivery line; 9. a melt meter; 10. a spinning assembly; 11. a first ventilation pipeline; 12. a first dust remover; 13. a first filter; 14. a first air outlet pipe; 15. a crusher; 16. a vibrator; 17. a material sliding plate; 18. a nitrogen flow controller; 19. a discharge melt duct; 20. a second air duct; 21. a second dust remover; 22. a second filter; 23. an oxygen concentration detector; 24. and an air outlet pipe.
Detailed Description
The present invention will be further described with reference to examples, in which various chemicals and reagents are commercially available unless otherwise specified.
Examples
Fig. 1 is a schematic diagram of an embodiment of a spinning device for continuously compressing, exhausting and deoxidizing high-performance polyphenylene sulfide powder, and as shown in the figure, the spinning device for continuously compressing, exhausting and deoxidizing high-performance polyphenylene sulfide powder provided by the invention comprises a rack 1, a bin 2, a weight metering device 3, a compression screw conveying device 4, a first discharging barrel 5, a second discharging barrel 6, a double-screw conveying device 7, a nitrogen conveying pipeline 8, a melt meter 9 and a spinning assembly 10, wherein the bin 2 is arranged at the top of the rack 1, and polyphenylene sulfide powders with different bulk densities are stored in the bin 2. The weight metering device 3 is arranged on the lower side of the stock bin 2, one side of a discharge hole of the weight metering device 3 is communicated with the first feeding barrel 5, the weight metering device 3 is a spiral conveying device with a weight meter, and polyphenylene sulfide powder in the stock bin 2 enters the weight metering device 3 and is conveyed into the first feeding barrel 5 after being weighed according to weight.
The feeding barrel I5 is vertically arranged on one side of a discharge port of the weight metering device 3, and the polyphenylene sulfide powder is conveyed downwards after entering the feeding barrel I5. The bottom of the first feeding barrel 5 is connected with a feeding hole of the compression screw conveying device 4, and the polyphenylene sulfide powder enters the compression screw conveying device 4 to be compressed and exhausted, so that more than 90% of air in the powder is removed. The top of the lower charging barrel 5 is communicated with a first ventilation pipeline 11, a first dust remover 12 and a first filter 13 are sequentially arranged on the first ventilation pipeline 11, and one side of a discharge hole of the first filter 13 is connected with a first air outlet pipe 14. The compressed and exhausted air of the compression screw conveying device 4 enters the first dust remover 12 through the first air pipeline 11 for dust removal, then enters the first filter 13 for filtration, and is exhausted from the first air outlet pipe 14.
One side of a discharge port of the compression screw is communicated with the second feeding cylinder 6, a crusher 15 is arranged at the joint of the compression screw conveying device 4 and the second feeding cylinder 6, polyphenylene sulfide powder coming out of a head of the compression screw can be accumulated, the polyphenylene sulfide powder is fully crushed by the crusher 15, and the crushed polyphenylene sulfide powder enters the second feeding cylinder 6 to be contacted with nitrogen, so that the specific surface area of the powder in contact with the nitrogen is increased, the exchange efficiency of the nitrogen and air in the powder is improved, and the efficiency of discharging the air from the polyphenylene sulfide powder is improved.
The outer side wall of the second discharging barrel 6 is provided with a vibrator 16, and the inside of the second discharging barrel 6 is connected with a plurality of sliding material plates 17 which are arranged in a staggered mode. The polyphenylene sulfide powder enters the second discharging barrel 6 and firstly falls on the upper side material sliding plate 17, slowly slides down along the material sliding plate 17, is fully contacted and exchanged with nitrogen, and then falls on the next material sliding plate 17, the exchange time of the powder and the nitrogen is prolonged through the material sliding plate 17, and the homogenization is realized through the falling of the powder between the previous material sliding plate 17 and the next material sliding plate 17. The vibrator 16 is arranged to shake the polyphenylene sulfide powder on the sliding plate 17 to increase the contact area between the polyphenylene sulfide powder and nitrogen, and to prevent the powder from accumulating on the sliding plate 17 and blocking.
The bottom of the feeding barrel II 6 is connected with a feeding hole of a double-screw conveying device 7, the double-screw conveying device 7 is a double screw with a deliming device, polyphenylene sulfide powder enters the double-screw conveying device 7 after passing through the feeding barrel II 6, a double-screw output device is arranged at the bottom of the rack 1, a first area of the double-screw conveying device 7 is provided with an inflation inlet communicated with a nitrogen conveying pipeline 8, the nitrogen conveying pipeline 8 is provided with a nitrogen flow controller 18, and nitrogen enters the double-screw conveying device 7 through the inflation inlet and is opposite to the conveying direction of the polyphenylene sulfide powder.
The discharge port of the double-screw conveying device 7 is connected with a discharge melt pipeline 19, a melt meter 9 is arranged on the discharge melt pipeline 19, and the discharge port of the melt meter 9 is connected with the spinning assembly 10. The polyphenylene sulfide powder is extruded again in the double-screw conveying device 7 and melted for devolatilization, the melt is conveyed to a discharge melt pipeline 19 by the pressure of the double screws, and the melt enters the spinning component 10 for spinning after being metered by a melt meter 9. The material amount required by production is detected by a melt meter 9 and fed back to a double-screw conveying device 7, a compression screw conveying device 4 and a weight metering device 3, and speed regulation is performed in a coordinated manner, so that stable and continuous operation of production is ensured, and meanwhile, the powder bulk density from an outlet of a compression screw is ensured to be basically consistent.
The top of the feeding barrel II 6 is communicated with the ventilation pipeline II 20, the ventilation pipeline II 20 is sequentially provided with a second dust remover 21 and a second filter 22, one side of a discharge hole of the second filter 22 is connected with a second air outlet pipe 24, and the second air outlet pipe 24 is provided with an oxygen concentration detector 23. The nitrogen gas filled from the inflation inlet of the first area of the double-screw conveying device 7 firstly controls the flow through the flow controller, flows reversely with the powder, flows to the blanking barrel II 6 from the first area of the double-screw conveying device 7, and enters the second ventilating pipeline 20 all the way upwards, is discharged from the second ventilating pipeline 20 to the second dust remover 21 for dust removal and is filtered by the second filter 22, and is discharged through the second air outlet pipe 24, the oxygen concentration monitor is arranged on the second air outlet pipe 24, and the nitrogen flow controller 18 is controlled according to the oxygen concentration detected by the oxygen concentration monitor, so that the nitrogen flow can be adjusted according to the oxygen concentration of the discharged gas.
The specific working process is as follows: the polyphenylene sulfide powder enters the weight metering device from the storage bin, after being metered according to weight, the polyphenylene sulfide powder is input into the compression screw conveying device from the first feeding barrel to be compressed and exhausted, resin coming out of the head of the compression screw conveying device falls into the second feeding barrel after being crushed by the crusher, an inflation inlet in a first area of the double screw conveying device is filled with nitrogen, the nitrogen and the powder flow in the reverse direction, the nitrogen enters the second feeding barrel upwards to be fully contacted with the polyphenylene sulfide powder conveyed downwards, the polyphenylene sulfide powder enters the double screw conveying device after passing through the sliding plates which are sequentially staggered, is extruded again and melted and devolatilized, and melt is conveyed to a discharging melt pipeline by the pressure of the double screws and then enters the spinning assembly to be spun after passing through a melt meter on the discharging melt pipeline.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a spinning equipment of deoxidization of continuous compression exhaust of high performance polyphenylene sulfide powder which characterized in that: the device comprises a rack, a bin, a weight metering device, a compression screw conveying device, a first discharging barrel, a second discharging barrel, a double-screw conveying device, a nitrogen conveying pipeline, a melt meter and a spinning assembly, wherein the bin is arranged at the top of the rack;
the top of the second feeding barrel is communicated with the second vent pipe, the bottom of the second feeding barrel is connected with a feed inlet of a double-screw conveying device, a double-screw output device is arranged at the bottom of the rack, a first area of the double-screw conveying device is provided with an inflation inlet communicated with a nitrogen conveying pipeline, a nitrogen flow controller is arranged on the nitrogen conveying pipeline, a discharge outlet of the double-screw conveying device is connected with a discharge melt pipeline, a melt meter is arranged on the discharge melt pipeline, and a discharge outlet of the melt meter is connected with the spinning assembly.
2. The spinning device for continuously compressing, exhausting and deoxidizing the high-performance polyphenylene sulfide powder according to claim 1, characterized in that: the weight metering device is a spiral conveying device with a weight meter.
3. The spinning device for continuously compressing, exhausting and deoxidizing the high-performance polyphenylene sulfide powder according to claim 1, characterized in that: the first ventilating pipeline is sequentially provided with a first dust remover and a first filter, and one side of a discharge hole of the first filter is connected with the first air outlet pipe.
4. The spinning device for continuously compressing, exhausting and deoxidizing the high-performance polyphenylene sulfide powder according to claim 1, characterized in that: a crusher is arranged at the joint of the compression screw conveying device and the second discharging barrel.
5. The spinning device for continuously compressing, exhausting and deoxidizing the high-performance polyphenylene sulfide powder according to claim 1, characterized in that: the outer side wall of the second feeding barrel is provided with a vibrator, and the inside of the second feeding barrel is connected with a plurality of sliding material plates which are arranged in a staggered mode.
6. The spinning device for continuously compressing, exhausting and deoxidizing the high-performance polyphenylene sulfide powder according to claim 1, characterized in that: and a second dust remover and a second filter are sequentially arranged on the second ventilation pipeline, one side of a discharge hole of the second filter is connected with a second air outlet pipe, and an oxygen concentration detector is arranged on the second air outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211613722.5A CN115821399A (en) | 2022-12-15 | 2022-12-15 | Spinning device for continuously compressing, exhausting and deoxidizing high-performance polyphenylene sulfide powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211613722.5A CN115821399A (en) | 2022-12-15 | 2022-12-15 | Spinning device for continuously compressing, exhausting and deoxidizing high-performance polyphenylene sulfide powder |
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| CN115821399A true CN115821399A (en) | 2023-03-21 |
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| CN202211613722.5A Pending CN115821399A (en) | 2022-12-15 | 2022-12-15 | Spinning device for continuously compressing, exhausting and deoxidizing high-performance polyphenylene sulfide powder |
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2022
- 2022-12-15 CN CN202211613722.5A patent/CN115821399A/en active Pending
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| CN215286719U (en) * | 2021-07-22 | 2021-12-24 | 江阴苏利化学股份有限公司 | A exhaust conveying equipment for wettable powder of pesticide |
| CN217414571U (en) * | 2022-04-14 | 2022-09-13 | 无锡大诚高新材料科技有限公司 | Double-screw extruder |
| CN115506040A (en) * | 2022-10-11 | 2022-12-23 | 山东明化新材料有限公司 | Spinning method for directly melt-extruding polyphenylene sulfide powder |
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