CN117106298B - Fire-fighting protective mask body material and preparation method thereof - Google Patents
Fire-fighting protective mask body material and preparation method thereof Download PDFInfo
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- CN117106298B CN117106298B CN202311374639.1A CN202311374639A CN117106298B CN 117106298 B CN117106298 B CN 117106298B CN 202311374639 A CN202311374639 A CN 202311374639A CN 117106298 B CN117106298 B CN 117106298B
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- polycarbonate
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- 239000000463 material Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 230000001681 protective effect Effects 0.000 title claims description 4
- 239000007921 spray Substances 0.000 claims abstract description 25
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 21
- 238000001125 extrusion Methods 0.000 claims description 19
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 abstract description 63
- 229920000515 polycarbonate Polymers 0.000 abstract description 63
- 229920002635 polyurethane Polymers 0.000 abstract description 39
- 239000004814 polyurethane Substances 0.000 abstract description 39
- 239000012295 chemical reaction liquid Substances 0.000 abstract description 33
- 239000002131 composite material Substances 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 5
- 239000004970 Chain extender Substances 0.000 abstract description 3
- 150000001412 amines Chemical group 0.000 abstract description 3
- 150000001718 carbodiimides Chemical class 0.000 abstract description 3
- 239000012948 isocyanate Substances 0.000 abstract description 3
- 150000002513 isocyanates Chemical class 0.000 abstract description 3
- 229920005862 polyol Polymers 0.000 abstract description 3
- 150000003077 polyols Chemical class 0.000 abstract description 3
- 238000007790 scraping Methods 0.000 description 22
- 239000012535 impurity Substances 0.000 description 16
- 238000002156 mixing Methods 0.000 description 12
- 239000002994 raw material Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 230000009471 action Effects 0.000 description 8
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000012696 Interfacial polycondensation Methods 0.000 description 2
- 150000001447 alkali salts Chemical class 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/27—Cleaning; Purging; Avoiding contamination
- B29C48/2725—Cleaning; Purging; Avoiding contamination of filters
- B29C48/2735—Cleaning; Purging; Avoiding contamination of filters using scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/287—Raw material pre-treatment while feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/29—Feeding the extrusion material to the extruder in liquid form
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention belongs to the technical field of preparation of polycarbonate, and particularly relates to a fire protection mask body material and a preparation method thereof; the preparation method comprises the following steps: s1: reacting the carbodiimide modified isocyanate mixture with polycarbonate polyol under the use of an amine chain extender to obtain modified polyurethane reaction liquid; according to the invention, the stirring rod is rotated to stir and mix the powdery polycarbonate and the modified polyurethane reaction liquid, and the spray head is driven to rotate to be matched with the shunt to uniformly spray the modified polyurethane reaction liquid into the powdery polycarbonate, so that the powdery polycarbonate and the modified polyurethane reaction liquid are uniformly mixed, and the problem of reduced quality of a finished product of the polycarbonate composite material caused by uneven material conveying because the powdery polycarbonate and the modified polyurethane reaction liquid are not fully mixed is effectively avoided.
Description
Technical Field
The invention belongs to the technical field of preparation of polycarbonate, and particularly relates to a fire protection mask body material and a preparation method thereof.
Background
Because of the special requirements of fire-fighting and rescue, the fire-fighting helmet has very high requirements on high temperature resistance and impact resistance, so that few materials can be selected, and most of the materials used for the fire-fighting helmet in China are polyetherimide materials, polysulfone materials, modified nylon materials and modified polycarbonate materials at present. The preparation method of the modified polycarbonate material also comprises an ester exchange method and a phosgene direct method, and after the polycarbonate raw material is prepared by the phosgene direct method, the polycarbonate raw material is generally subjected to melt extrusion by extrusion equipment to obtain the shape required by product processing.
In the prior art, because the body characteristic of polycarbonate leads to the ageing resistance of polycarbonate relatively poor, and in the in-process of carrying out melt extrusion to the polycarbonate raw materials through extrusion equipment, because polycarbonate raw materials and other raw materials often do not obtain intensive mixing in putting into the feeding hopper, lead to the material to carry unevenly in the extruder easily, and then lead to the reduction of polycarbonate combined material finished product quality, and the raw materials misce bene also can lead to the working pressure of engine too big, and the refluence promotes, leads to the problem of production efficiency decline.
Therefore, the invention provides a fire-fighting protective mask body material and a preparation method thereof.
Disclosure of Invention
In order to make up the deficiency of the prior art, solve in the prior art, because the body characteristic of polycarbonate causes the ageing resistance of polycarbonate to be poor, and in the process of carrying on the melt extrusion to the polycarbonate raw materials through the extrusion equipment, because polycarbonate raw materials and other raw materials often do not get the intensive mixing in putting into the feeding hopper, lead to the material to carry unevenly in the extruder easily, and then cause the degradation of polycarbonate combined material finished product quality, and raw materials mixing unevenly can cause too big of working pressure of the engine too, backflow promotes, lead to the problem that the production efficiency declines, the invention provides a fire protection mask body material and its preparation method.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a preparation method of a fire protection mask body material, which comprises the following steps:
s1: reacting the carbodiimide modified isocyanate mixture with polycarbonate polyol under the use of an amine chain extender to obtain modified polyurethane reaction liquid;
s2: according to a specified proportion, bisphenol A, sodium hydroxide aqueous solution, catalyst, molecular weight regulator, antioxidant, solvent and phosgene are subjected to interfacial polycondensation reaction at the temperature of 20-40 ℃ and normal pressure, an upper alkali salt solution is removed after the reaction reaches the end point, so as to prepare polycarbonate glue solution, the glue solution is efficiently washed to remove residual bisphenol A, catalyst, inorganic salt and mechanical impurities, and then polycarbonate is separated out in a powdery form by a spray steam-separation method;
s3: and mixing the powdery polycarbonate with the modified polyurethane reaction liquid, and performing melt extrusion through extrusion equipment to obtain the polycarbonate composite material.
Preferably, the extrusion equipment in S3 includes extruder body and industrial control platform, one side of extruder body is equipped with the industrial control platform, the rigid coupling has the feeding hopper on the extruder body, the bottom rigid coupling of feeding hopper has the inlet pipe, the bottom of inlet pipe extends to the extruder originally internally, the top rigid coupling of feeding hopper has feed inlet and motor, the output shaft and the gear one rigid coupling of motor, gear one is connected with gear two meshing, gear two cup joints in the pivot, the top of pivot is equipped with the cavity, the inner wall top of cavity is connected with feed liquor pipe a rotation through sealed bearing, the bottom of pivot extends to the inner chamber bottom of inlet pipe, be equipped with the multiunit puddler in the inner chamber of feeding hopper, the puddler cup joints in the pivot, and the inner chamber and the cavity intercommunication of puddler, the even rigid coupling of bottom of puddler has multiunit shower nozzle, the below of shower nozzle is equipped with the shunt.
Preferably, the diverter comprises a diverter plate, a third gear and an inner gear ring, the bottom end of the spray head is rotationally connected with the diverter plate, the diverter plate is conical, the third gear is sleeved on the outer side of the bottom end of the diverter plate, a plurality of groups of inner gear rings are arranged in the inner cavity of the feeding hopper, the inner gear rings are fixedly connected with the inner wall of the feeding hopper through a bracket, the third gear is meshed with the inner gear rings, a plurality of groups of diversion grooves are uniformly arranged on the conical surface of the diverter plate, and the bottom ends of the diversion grooves are inclined upwards.
Preferably, a liquid storage ring is sleeved on the outer wall of the feeding hopper, a plurality of groups of spray holes are uniformly arranged between the liquid storage ring and the feeding hopper, and a liquid inlet pipe II is fixedly connected to the top end of the liquid storage ring.
Preferably, the inner cavity of the feeding pipe is fixedly connected with a filter plate, the filter plate is rotationally connected with a rotating shaft, a first support plate and a second support plate are fixedly connected on the rotating shaft, a scraping plate is slidably connected between the first support plate and the second support plate, fixing rods are fixedly connected on the first support plate and the second support plate, a supporting rod is slidably connected in the inner cavity of the fixing rods, one end of the supporting rod is fixedly connected with the scraping plate, and an electromagnetic assembly is arranged between the supporting rod and the inner wall of the fixing rod.
Preferably, the electromagnetic assembly comprises an electromagnet and a permanent magnet, the electromagnet is fixedly connected to the inner wall of the fixing rod, the permanent magnet is fixedly connected to the inner side end of the supporting rod, and a first spring is fixedly connected between the inner side end of the supporting rod and the inner wall of the fixing rod.
Preferably, the drain pipe is fixedly connected on the outer wall of the feeding pipe, the guide rail is fixedly connected on the inner wall of the feeding pipe, the arc slide bar and the limiting ring are connected in a sliding manner in the inner cavity of the guide rail, the limiting ring is sleeved on the arc slide bar, the arc connecting block is connected on the side wall of the guide rail in a sliding manner, the arc connecting block is fixedly connected with the limiting ring, a spring II is fixedly connected between the limiting ring and the inner wall of the guide rail, a baffle is attached on the inner wall of the feeding pipe, the baffle is matched with the drain pipe, the arc connecting block is fixedly connected with the baffle, a limiting component is fixedly connected on one side of the baffle, a switch component is arranged between the arc connecting block and the guide rail, the bottom end of the first support plate is fixedly connected with an L-shaped pushing block, the bottom end of the second support plate is not contacted with the top of the filter plate, a triangular block is arranged below one end of the guide rail, which is far away from the limiting component, the triangular block is fixed on the filter plate, and the L-shaped pushing block is matched with the triangular block and the limiting component.
Preferably, the switch assembly comprises a first contact switch and a second contact switch, the first contact switch is embedded on the arc-shaped connecting block, the second contact switch is embedded at one end, far away from the limit assembly, of the guide rail, and the electromagnet is electrified after the first contact switch and the second contact switch touch.
Preferably, the limiting component comprises a fixed sleeve, a third spring and a limiting block, wherein the fixed sleeve is fixedly connected with the side wall of the baffle, a sliding block is slidably connected in an inner cavity of the fixed sleeve, the limiting block is fixedly connected with the bottom end of the sliding block, the bottom end of the limiting block extends to be straight below the fixed sleeve, two sides of the bottom end of the limiting block are respectively provided with a first inclined surface and a second inclined surface, and the first inclined surface is higher than the second inclined surface.
The material of the fire protection mask body is prepared by adopting the preparation method of the material of the fire protection mask body.
The beneficial effects of the invention are as follows:
1. according to the fire protection mask body material and the preparation method thereof, the ageing resistance of the fire protection mask body is greatly improved through the mixed use of polyurethane and polycarbonate, the powdery polycarbonate and the modified polyurethane reaction liquid can be stirred and mixed through the rotating stirring rod, the spray head can be driven to rotate to be matched with the shunt to uniformly spray the modified polyurethane reaction liquid into the powdery polycarbonate, the powdery polycarbonate and the modified polyurethane reaction liquid are uniformly mixed, the problems of poor quality of a polycarbonate composite material finished product caused by uneven material conveying due to insufficient mixing of the powdery polycarbonate and the modified polyurethane reaction liquid are effectively avoided, and the problems of overlarge working pressure, backflow promotion and production efficiency reduction of an engine caused by the fact that the powdery polycarbonate and the modified polyurethane reaction liquid are not uniformly mixed are also solved.
2. According to the fire protection mask body material and the preparation method thereof, the industrial control console can control the electromagnetic assembly to be electrified and powered off regularly, so that the electromagnetic assembly can drive the supporting rods to slide reciprocally, the scraping plates can slide on the filter plates, and the scraping plates rotate along with the rotating shafts to drive the first supporting plates and the second supporting plates to rotate, so that the scraping plates can stir mixed materials on the filter plates, the problem that the filter plates are blocked is avoided, the mixed materials can be filtered through the filter plates, and the quality reduction of polycarbonate composite material finished products caused by the mixing of impurities is avoided.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of an extruder body of the present invention;
FIG. 2 is a schematic view of a feed hopper according to the present invention;
FIG. 3 is a schematic view of the interior of the feed hopper of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a schematic view of a feed tube of the present invention;
FIG. 6 is a partial schematic view of the present invention;
FIG. 7 is a partial cross-sectional view of a feed tube of the present invention;
FIG. 8 is a first schematic view of the invention at a filter plate;
FIG. 9 is a cross-sectional view of a securing lever of the present invention;
FIG. 10 is a second schematic view of the invention at a filter plate;
FIG. 11 is an enlarged view of a portion of FIG. 10 at B;
FIG. 12 is a cross-sectional view of a retaining sleeve of the present invention;
FIG. 13 is a cross-sectional view of a guide rail of the present invention;
FIG. 14 is a flow chart of a method of the present invention;
in the figure: 1. an extruder body; 2. an industrial control desk; 3. a feeding hopper; 4. a feed pipe; 5. a feed inlet; 6. a motor; 7. a first gear; 8. a second gear; 9. a rotating shaft; 10. a liquid inlet pipe I; 11. a stirring rod; 12. a spray head; 13. a diverter plate; 14. a third gear; 15. a bracket; 16. an inner gear ring; 17. a liquid storage ring; 18. a liquid inlet pipe II; 19. a spray hole; 20. a blow-down pipe; 21. a first support plate; 22. a second support plate; 23. a fixed rod; 24. a first spring; 25. an electromagnet; 26. a permanent magnet; 27. a support rod; 28. a scraper; 30. a filter plate; 31. a guide rail; 32. an arc slide bar; 33. a limiting ring; 34. a second spring; 35. a baffle; 36. a contact switch I; 37. a second contact switch; 38. a fixed sleeve; 39. a third spring; 40. a slide block; 41. a limiting block; 42. triangular blocks; 43. an L-shaped pushing block; 44. arc connecting block.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 14, the preparation method of the mask body material of the fire protection mask according to the embodiment of the invention includes the following steps:
s1: reacting the carbodiimide modified isocyanate mixture with polycarbonate polyol under the use of an amine chain extender to obtain modified polyurethane reaction liquid;
s2: according to a specified proportion, bisphenol A, sodium hydroxide aqueous solution, catalyst, molecular weight regulator, antioxidant, solvent and phosgene are subjected to interfacial polycondensation reaction at the temperature of 20-40 ℃ and normal pressure, an upper alkali salt solution is removed after the reaction reaches the end point, so as to prepare polycarbonate glue solution, the glue solution is efficiently washed to remove residual bisphenol A, catalyst, inorganic salt and mechanical impurities, and then polycarbonate is separated out in a powdery form by a spray steam separation method;
s3: and mixing the powdery polycarbonate with the modified polyurethane reaction liquid, and performing melt extrusion through extrusion equipment to obtain the polycarbonate composite material.
The extrusion equipment in the step S3 comprises an extruder body 1 and an industrial control table 2, wherein one side of the extruder body 1 is provided with the industrial control table 2, a feeding hopper 3 is fixedly connected to the extruder body 1, a feeding pipe 4 is fixedly connected to the bottom end of the feeding hopper 3, the bottom end of the feeding pipe 4 extends into the extruder body 1, a feeding port 5 and a motor 6 are fixedly connected to the top of the feeding hopper 3, an output shaft of the motor 6 is fixedly connected with a first gear 7, the first gear 7 is meshed with a second gear 8, the second gear 8 is sleeved on a rotating shaft 9, a cavity is formed in the top of the rotating shaft 9, the top of the inner wall of the cavity is in rotary connection with a first liquid inlet pipe 10 through a sealing bearing, the bottom end of the rotating shaft 9 extends to the bottom of an inner cavity of the feeding pipe 4, a plurality of groups of stirring rods 11 are arranged in the inner cavity of the feeding hopper 3, the stirring rods 11 are sleeved on the rotating shaft 9, the inner cavity of the stirring rods 11 are communicated with the cavity, a plurality of groups of spray heads 12 are uniformly fixedly connected to the bottom ends of the stirring rods 11, and a flow divider is arranged below the spray heads 12; during operation, staff drops into the feeding hopper 3 with powdered polycarbonate from feed inlet 5, send into the cavity of pivot 9 with modified polyurethane reaction solution through feed liquor pipe one 10, the shower nozzle 12 blowout of rethread puddler 11 below, spray on the shunt, scatter in powdered polycarbonate, drive pivot 9 and puddler 11 rotation through motor 6 cooperation gear one 7 and gear two 8, can stir the mixture to powdered polycarbonate and modified polyurethane reaction solution through rotatory puddler 11, can drive shower nozzle 12 rotation cooperation shunt again and evenly spray modified polyurethane reaction solution in powdered polycarbonate, make powdered polycarbonate and modified polyurethane reaction solution obtain even mixing, effectually avoid because powdered polycarbonate and modified polyurethane reaction solution do not obtain intensive mixing, lead to the uneven material transportation, the problem of polycarbonate combined material finished product quality decline that causes, simultaneously also improved the engine operating pressure that does not obtain even mixing and is too big, the problem of backflow, production efficiency decline.
The diverter comprises a diverter plate 13, a gear III 14 and an inner gear ring 16, the bottom end of the spray head 12 is rotationally connected with the diverter plate 13, the diverter plate 13 is conical, the gear III 14 is sleeved outside the bottom end of the diverter plate 13, a plurality of groups of inner gear rings 16 are arranged in the inner cavity of the feeding hopper 3, the inner gear rings 16 are fixedly connected with the inner wall of the feeding hopper 3 through a bracket 15, the gear III 14 is meshed with the inner gear rings 16, a plurality of groups of diversion grooves are uniformly arranged on the conical surface of the diverter plate 13, and the bottom ends of the diversion grooves are inclined upwards; during operation, when the modified polyurethane reaction liquid is scattered on the flow distribution plate 13 when being sprayed out through the spray head 12, the flow distribution plate 13 is influenced by the gear III 14 and the inner gear ring 16 and the rotation of the stirring rod 11 driving the spray head 12, so that the flow distribution plate 13 revolves around the rotating shaft 9 and rotates, the modified polyurethane reaction liquid sprayed on the surface of the flow distribution plate 13 can be rotationally dispersed in powdery polycarbonate, the modified polyurethane reaction liquid and the polycarbonate can be fully and uniformly mixed, the spraying of the modified polyurethane reaction liquid can be guided through the flow guide grooves arranged on the flow distribution plate 13, and the modified polyurethane reaction liquid is parabolic after being sprayed out from the bottom ends of the flow guide grooves because the bottom ends of the flow guide grooves are inclined upwards, so that the modified polyurethane reaction liquid can be better mixed with the polycarbonate.
A liquid storage ring 17 is sleeved on the outer wall of the feeding hopper 3, a plurality of groups of spray holes 19 are uniformly arranged between the liquid storage ring 17 and the feeding hopper 3, and a liquid inlet pipe II 18 is fixedly connected to the top end of the liquid storage ring 17; during operation, the modified polyurethane reaction liquid is conveyed into the liquid storage ring 17 through the liquid inlet pipe II 18 and then sprayed out through the spray hole 19 between the liquid storage ring 17 and the feeding hopper 3, so that the modified polyurethane reaction liquid can be dispersed at the edge of the feeding hopper 3, the polycarbonate at the edge of the inner wall of the feeding hopper 3 can be mixed with the modified polyurethane reaction liquid, and part of the modified polyurethane reaction liquid can slide down along the inner wall of the feeding hopper 3, so that the polycarbonate is prevented from being attached to the inner wall of the feeding hopper 3.
The inner cavity of the feeding pipe 4 is fixedly connected with a filter plate 30, the filter plate 30 is rotationally connected with a rotating shaft 9, a first support plate 21 and a second support plate 22 are fixedly connected on the rotating shaft 9, a scraping plate 28 is slidably connected between the first support plate 21 and the second support plate 22, fixing rods 23 are fixedly connected on the first support plate 21 and the second support plate 22, a supporting rod 27 is slidably connected in the inner cavity of the fixing rod 23, one end of the supporting rod 27 is fixedly connected with the scraping plate 28, and an electromagnetic assembly is arranged between the supporting rod 27 and the inner wall of the fixing rod 23; during operation, when feeding, can control the regular circular telegram and the outage of electromagnetism subassembly through industrial computer 2 for electromagnetism subassembly can drive branch 27 reciprocal slip, and then makes scraper blade 28 can slide on filter 30, again because pivot 9 drives extension board one 21 and extension board two 22 rotation, make scraper blade 28 rotate thereupon, and then make scraper blade 28 stir the mixed material on the filter 30, avoid filter 30 to be blocked up the problem, can filter the mixed material through filter 30, avoid the mixing of impurity to cause polycarbonate combined material finished product quality to drop.
The electromagnetic assembly comprises an electromagnet 25 and a permanent magnet 26, wherein the electromagnet 25 is fixedly connected to the inner wall of the fixed rod 23, the permanent magnet 26 is fixedly connected to the inner side end of the supporting rod 27, and a first spring 24 is fixedly connected between the inner side end of the supporting rod 27 and the inner wall of the fixed rod 23; when the power-on type filter plate 30 is powered on, the industrial control console 2 controls the electromagnet 25 to be electrified, magnetic attraction force is generated between the electromagnet 25 and the permanent magnet 26, the first spring 24 is compressed by the supporting rod 27 to be contracted into the fixed rod 23, and when the electromagnet 25 is powered off, the supporting rod 27 is ejected under the elastic force of the first spring 24, and the supporting rod is reciprocated in such a way, so that the scraper 28 can slide on the filter plate 30 in a reciprocating manner while rotating to stir the mixed materials on the filter plate 30.
The utility model discloses a sewage treatment device, including inlet pipe 4, guide rail 31, arc slide bar 32 and spacing ring 33 are connected to fixedly on the outer wall of inlet pipe 4, fixedly connected with on the inner wall of inlet pipe 4, sliding connection has arc slide bar 32 and spacing ring 33 in the inner chamber of guide rail 31, spacing ring 33 cup joints at arc slide bar 32, sliding connection has arc connecting block 44 on the lateral wall of guide rail 31, arc connecting block 44 and spacing ring 33 fixedly connected, fixedly connected with spring two 34 between the inner wall of spacing ring 33 and guide rail 31, laminating on the inner wall of inlet pipe 4 has baffle 35, baffle 35 and sewage treatment pipe 20 looks adaptation, arc connecting block 44 and baffle 35 fixedly connected, one side fixedly connected with of baffle 35 has spacing subassembly, be equipped with switch assembly between arc connecting block 44 and the guide rail 31, the bottom rigid coupling of extension board one 21 has L ejector pad 43, and the bottom of extension board one 21 does not contact with the top of filter 30, the bottom of extension board two 22 is laminated with the top of filter 30, the one end below of spacing subassembly is equipped with triangle-shaped piece 42, triangle-shaped piece 42 is fixed on filter 30, L-shaped ejector pad 43 and spacing subassembly looks triangle-shaped piece 42; during operation, when feeding is performed, the baffle 35 is used for blocking the drain pipe 20 through the action of the second spring 34, meanwhile, the motor 6 drives the rotating shaft 9 to rotate positively, in the process, because of the action of the limiting component, the L-shaped push block 43 on the first support plate 21 cannot drive the baffle 35 to slide, further, the first support plate 21 and the second support plate 22 normally drive the scraping plate 28 to rotate, after feeding is finished, the motor 6 drives the rotating shaft 9 to rotate reversely, the second support plate 22 is matched with the scraping plate 28 to conduct rotary scraping and concentration on residual impurities on the filter plate 30 until the L-shaped push block 43 on the first support plate 21 drives the limiting component and the baffle 35 to slide along the guide rail 31, the second spring 34 is compressed, at the moment, the switch component can control the electromagnet 25 to enable the scraping plate 28 to slide along the second support plate 22 to scrape the residual impurities into the drain pipe 20 after the baffle 35 is opened, when the limiting component slides to the triangular block 42, the L-shaped push block 43 is separated from the limiting component, the baffle 35 resets under the elastic action of the second spring 34, and the switch component is controlled until the first support plate 21 rotates along the L-shaped push block 43 and repeatedly contacts with the limiting component again.
The switch assembly comprises a first contact switch 36 and a second contact switch 37, the first contact switch 36 is embedded on the arc-shaped connecting block 44, the second contact switch 37 is embedded at one end, far away from the limiting assembly, of the guide rail 31, and the electromagnet 25 is electrified after the first contact switch 36 and the second contact switch 37 are touched; when the L-shaped push block 43 drives the baffle 35 to slide, the arc-shaped connecting block 44 slides along the guide rail 31 until the first contact switch 36 is contacted with the second contact switch 37, at the moment, the electromagnet 25 is electrified, the supporting rod 27 drives the scraping plate 28 to pop up to push concentrated impurities into the opened sewage drain pipe 20, automatic concentration and cleaning of the impurities are completed, after the L-shaped push block 43 is separated from the limiting component, the arc-shaped connecting block 44 is reset under the action of the elastic force of the second spring 34, the first contact switch 36 is separated from the second contact switch 37, the electromagnet 25 is powered off, the scraping plate 28 is reset, and the second supporting plate 22 is matched to concentrate residual impurities on the filter plate 30 again.
The limiting assembly comprises a fixed sleeve 38, a third spring 39 and a limiting block 41, wherein the fixed sleeve 38 is fixedly connected with the side wall of the baffle 35, a sliding block 40 is slidably connected in an inner cavity of the fixed sleeve 38, the limiting block 41 is fixedly connected to the bottom end of the sliding block 40, the bottom end of the limiting block 41 extends to the lower side of the fixed sleeve 38, the two sides of the bottom end of the limiting block 41 are respectively provided with a first inclined surface and a second inclined surface, and the first inclined surface is higher than the second inclined surface; when the motor 6 drives the rotating shaft 9 to rotate positively for feeding, the L-shaped push block 43 below the support plate I21 is contacted with the inclined surface I on the limiting block 41 firstly, so that the limiting block 41 slides upwards to shrink into the fixed sleeve 38 to drive the sliding block 40 to extrude the third spring 39 until the L-shaped push block 43 is separated from the limiting block 41, the limiting block 41 is ejected and reset again under the action of the elastic force of the third spring 39, when the motor 6 drives the rotating shaft 9 to rotate reversely for impurity cleaning, the rotating support plate I21 drives the L-shaped push block 43 to contact with one side of the inclined surface II on the limiting block 41, the L-shaped push block 43 is not attached to the inclined surface II, at the moment, the L-shaped push block 43 drives the limiting block 41 to rotate, the fixed sleeve 38 drives the baffle 35 and the arc-shaped connecting block 44 to slide along the guide rail 31 until the limiting block 41 contacts with the triangular block 42, the limiting block 41 is extruded and shrunk into the fixed sleeve 38 until the bottom end of the limiting block 41 is attached to the top of the triangular block 42, at the moment, the L-shaped push block 43 contacts with the inclined surface II on the limiting block 41 again, and then the L-shaped push block 43 slides upwards into the fixed sleeve 38 again until the L-shaped push block 41 is separated from the triangular block 42, and is separated from the elastic force of the triangular block 42, and the L-shaped block 41 contacts with the inclined surface II again, and the baffle 41 is reciprocally contacted with the limiting block 41.
The material of the fire protection mask body is prepared by adopting the preparation method of the material of the fire protection mask body.
According to the working principle, workers throw powdered polycarbonate into a feeding hopper 3 from a feed inlet 5, modified polyurethane reaction liquid is fed into a cavity of a rotating shaft 9 through a liquid inlet pipe I10, then the polycarbonate reaction liquid is sprayed out through a spray head 12 below a stirring rod 11 and sprayed on a flow divider, scattered in the powdered polycarbonate, the rotating shaft 9 and the stirring rod 11 are driven to rotate through a motor 6 matched with a gear I7 and a gear II 8, the powdered polycarbonate and the modified polyurethane reaction liquid can be stirred and mixed through the rotating stirring rod 11, the spray head 12 is driven to be matched with a flow divider to uniformly spray the modified polyurethane reaction liquid into the powdered polycarbonate, the problem that the quality of a polycarbonate composite material finished product is reduced because the powdered polycarbonate and the modified polyurethane reaction liquid are not fully mixed is solved, meanwhile, the problem that the working pressure of an engine is overlarge and the backflow caused by the uniform mixing of the two materials is solved, the production efficiency is reduced is solved, when the modified polyurethane reaction liquid is sprayed out through the spray head 12, the rotating guide plate 13 is driven by a rotating guide plate 13, the three-way of the rotating wheels are driven by the rotating guide plate 13, the rotating plate 13 is enabled to be influenced by the rotating guide plate 13, and the rotating plate 13 is further, the surface of the modified polyurethane can be fully sprayed on the surface of the rotating plate 13 is enabled to be influenced by the rotating guide plate 13, the modified polyurethane reaction liquid is sprayed out from the bottom end of the diversion trench and then is parabolic, the modified polyurethane reaction liquid can be better mixed with polycarbonate, the electromagnetic assembly can be controlled to be electrified and cut off regularly through the work control platform 2 when the polycarbonate is fed, the electromagnetic assembly can drive the supporting rod 27 to slide reciprocally, the scraping plate 28 can slide on the filter plate 30, and the rotating shaft 9 drives the supporting plate one 21 and the supporting plate two 22 to rotate, so that the scraping plate 28 can stir mixed materials on the filter plate 30, the filter plate 30 is prevented from being blocked, a part of the modified polyurethane reaction liquid can slide down along the inner wall of the feeder hopper 3, the polycarbonate is prevented from being attached to the inner wall of the feeder hopper 3, the electromagnetic assembly can be controlled to be electrified and cut off regularly when the electromagnetic assembly is fed, the electromagnetic assembly can drive the supporting rod 27 to slide reciprocally, the scraping plate 28 can slide on the filter plate 30, the electromagnetic assembly can further rotate along with the rotating shaft 9, the supporting plate one 21 and the supporting plate two 22 can rotate along with the rotating shaft, the scraping plate 28 can stir mixed materials on the filter plate 30, the filter plate 30 can be prevented from being blocked, the filter plate 30 is prevented from being mixed with the filter plate, the electromagnetic assembly can be prevented from being mixed with the filter plate, the electromagnetic assembly is prevented from being mixed with the electromagnetic assembly, the electromagnetic assembly 27 to be compressed and mixed materials can be compressed and mixed with the finished product 27 when the electromagnetic assembly is compressed, and the electromagnetic assembly is prevented from being compressed, and the electromagnetic assembly is compressed, the electromagnetic assembly 27 is compressed and the electromagnetic assembly is 20 are compressed and is 20 are in the material 30 when the material 30 are in the rotation 30. The baffle 35 is used for plugging the drain pipe 20 under the action of the second spring 34, the motor 6 drives the rotating shaft 9 to rotate forwards, in the process, the L-shaped push block 43 on the first support plate 21 can not drive the baffle 35 to slide under the action of the limiting component, the first support plate 21 and the second support plate 22 can normally drive the scraping plate 28 to rotate, after feeding is finished, the motor 6 drives the rotating shaft 9 to rotate reversely, the second support plate 22 is matched with the scraping plate 28 to scrape and concentrate the residual impurities on the filter plate 30 until the L-shaped push block 43 on the first support plate 21 drives the limiting component and the baffle 35 to slide along the guide rail 31, the second spring 34 is compressed, at the moment, the electromagnet 25 can be controlled to be electrified through the switching component, after the baffle 35 is opened, the scraping plate 28 slides along the second support plate 22 to scrape the residual impurities into the drain pipe 20, and when the limiting component slides to the triangular block 42, the L-shaped push block 43 is separated from the limiting component, the baffle 35 is reset under the elastic force of the second spring 34, the switch assembly is released from control until the first support plate 21 rotates for one circle, the L-shaped push block 43 is contacted with the limit assembly again, the operation is repeated, when the L-shaped push block 43 drives the baffle 35 to slide, the arc-shaped connecting block 44 slides along the guide rail 31 until the first contact switch 36 is contacted with the second contact switch 37, at the moment, the electromagnet 25 is electrified, the supporting rod 27 drives the scraping plate 28 to pop up to push concentrated impurities into the opened drain pipe 20, automatic concentration and cleaning of the impurities are completed, when the L-shaped push block 43 is separated from the limit assembly, the arc-shaped connecting block 44 is reset under the elastic force of the second spring 34, the first contact switch 36 is separated from the second contact switch 37, the electromagnet 25 is powered off, the scraping plate 28 is reset, the second support plate 22 is matched to concentrate residual impurities on the filter plate 30 again, when the motor 6 drives the rotating shaft 9 to rotate positively for feeding, the L-shaped push block 43 below the first support plate 21 is contacted with the inclined surface I on the limiting block 41 firstly, so that the limiting block 41 slides upwards to shrink into the fixed sleeve 38 to drive the sliding block 40 to press the third spring 39 until the L-shaped push block 43 is separated from the limiting block 41, the limiting block 41 pops up again to reset under the action of the elastic force of the third spring 39, when the motor 6 drives the rotating shaft 9 to reversely rotate for impurity cleaning, the rotating support plate 21 drives the L-shaped push block 43 to be contacted with one side of the inclined surface II on the limiting block 41, the L-shaped push block 43 is not contacted with the inclined surface II, at the moment, the L-shaped push block 43 drives the limiting block 41 to rotate, the fixed sleeve 38 drives the baffle 35 and the arc-shaped connecting block 44 to slide along the guide rail 31 until the limiting block 41 is contacted with the triangular block 42, the limiting block 41 is extruded to shrink into the fixed sleeve 38 until the bottom end of the limiting block 41 is contacted with the top of the triangular block 42, at the moment, the L-shaped push block 43 is contacted with the inclined surface II on the limiting block 41 again, so that the limiting block 41 slides upwards into the fixed sleeve 38 again, and after the limiting block 41 is separated from the limiting block 41, the elastic force of the third spring 39 is acted on the lower side of the limiting block 35, and the limiting block is simultaneously reset to reciprocate until the limiting block 43 is contacted with the L-shaped block 34 once.
The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. Extrusion equipment used in a preparation method of a fire-fighting protective mask body material is characterized in that: the novel stirring device comprises an extruder body (1) and an industrial control table (2), wherein one side of the extruder body (1) is provided with the industrial control table (2), a feeding hopper (3) is fixedly connected to the extruder body (1), a feeding pipe (4) is fixedly connected to the bottom end of the feeding hopper (3), the bottom end of the feeding pipe (4) extends into the extruder body (1), a feeding hole (5) and a motor (6) are fixedly connected to the top of the feeding hopper (3), an output shaft of the motor (6) is fixedly connected with a first gear (7), the first gear (7) is meshed with a second gear (8), the second gear (8) is sleeved on a rotating shaft (9), a cavity is formed in the top of the rotating shaft (9), the top of the inner wall of the cavity is rotationally connected with a first liquid feeding pipe (10) through a sealing bearing, a plurality of stirring rods (11) are arranged in an inner cavity of the feeding hopper (3), the stirring rods (11) are sleeved on the rotating shaft (9), and the bottom ends of the stirring rods (11) are uniformly connected with a plurality of groups of stirring rods (12) in a stirring rod (12) which are fixedly connected to a nozzle (12);
the diverter comprises a diverter plate (13), a gear III (14) and an inner gear ring (16), wherein the diverter plate (13) is rotationally connected to the bottom end of the spray head (12), the diverter plate (13) is conical, the gear III (14) is sleeved on the outer side of the bottom end of the diverter plate (13), a plurality of groups of inner gear rings (16) are arranged in the inner cavity of the feeding hopper (3), the inner gear ring (16) is fixedly connected with the inner wall of the feeding hopper (3) through a support (15), the gear III (14) is meshed with the inner gear rings (16), a plurality of groups of diversion grooves are uniformly formed in the conical surface of the diverter plate (13), and the bottom ends of the diversion grooves are inclined upwards.
2. The extrusion equipment used in the preparation method of the fire protection mask body material according to claim 1, wherein: the liquid storage ring (17) is sleeved on the outer wall of the feeding hopper (3), a plurality of groups of spray holes (19) are uniformly formed between the liquid storage ring (17) and the feeding hopper (3), and a liquid inlet pipe II (18) is fixedly connected to the top end of the liquid storage ring (17).
3. The extrusion apparatus for use in a method of making a fire protection mask body material according to claim 2, wherein: the utility model discloses a filter, including inlet pipe (4), filter, pivot (9), fixed connection in the inner chamber of inlet pipe (4), filter (30) rotate with pivot (9) to be connected, the rigid coupling has extension board one (21) and extension board two (22) on pivot (9), sliding connection has scraper blade (28) between extension board one (21) and the extension board two (22), all the rigid coupling has dead lever (23) on extension board one (21) and the extension board two (22), sliding connection has branch (27) in the inner chamber of dead lever (23), the one end and scraper blade (28) rigid coupling of branch (27), be equipped with electromagnetic assembly between the inner wall of branch (27) and dead lever (23).
4. An extrusion apparatus for use in a method of making a fire protection mask body material according to claim 3, wherein: the electromagnetic assembly comprises an electromagnet (25) and a permanent magnet (26), wherein the electromagnet (25) is fixedly connected to the inner wall of the fixed rod (23), the permanent magnet (26) is fixedly connected to the inner side end of the supporting rod (27), and a first spring (24) is fixedly connected between the inner side end of the supporting rod (27) and the inner wall of the fixed rod (23).
5. The extrusion equipment used in the preparation method of the fire protection mask body material according to claim 4, wherein: the utility model discloses a triangle-shaped filter plate, including baffle (35) and triangle-shaped filter plate, baffle (35) and baffle (20) looks adaptation are laminated on the inner wall of inlet pipe (4), arc slide bar (32) and spacing ring (33) are connected to the rigid coupling on the outer wall of inlet pipe (4), sliding connection has arc connecting block (44) in the inner chamber of guide rail (31), arc connecting block (44) and spacing ring (33) rigid coupling are connected to sliding connection on the lateral wall of guide rail (31), rigid coupling has spring two (34) between the inner wall of spacing ring (33) and guide rail (31), laminating baffle (35) on the inner wall of inlet pipe (4), baffle (35) and baffle (20) looks adaptation, arc connecting block (44) and baffle (35) rigid coupling, one side rigid coupling of baffle (35) has spacing subassembly, be equipped with switch assembly between arc connecting block (44) and guide rail (31), the bottom rigid coupling of support plate one (21) has L type ejector pad (43), and the bottom of support plate one (21) and the top of filter plate (30) does not contact with the filter plate (30), the bottom of support plate one end (30) is equipped with triangle-shaped filter plate (42) and is kept away from on the triangle-shaped filter plate (30), the L-shaped pushing block (43) is matched with the triangular block (42) and the limiting assembly.
6. The extrusion equipment used in the preparation method of the fire protection mask body material according to claim 5, wherein: the switch assembly comprises a first contact switch (36) and a second contact switch (37), the first contact switch (36) is embedded on the arc-shaped connecting block (44), the second contact switch (37) is embedded at one end, far away from the limiting assembly, of the guide rail (31), and the electromagnet (25) is electrified after the first contact switch (36) and the second contact switch (37) are touched.
7. The extrusion equipment used in the preparation method of the fire protection mask body material according to claim 6, wherein: the limiting component comprises a fixing sleeve (38), a third spring (39) and a limiting block (41), wherein the fixing sleeve (38) is fixedly connected with the side wall of the baffle (35), a sliding block (40) is slidably connected to the inner cavity of the fixing sleeve (38), the limiting block (41) is fixedly connected to the bottom end of the sliding block (40), the bottom end of the limiting block (41) extends to be straight below the fixing sleeve (38), an inclined surface I and an inclined surface II are respectively arranged on two sides of the bottom end of the limiting block (41), and the height of the inclined surface I is higher than that of the inclined surface II.
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| CN202311374639.1A CN117106298B (en) | 2023-10-23 | 2023-10-23 | Fire-fighting protective mask body material and preparation method thereof |
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| US5114240A (en) * | 1989-05-12 | 1992-05-19 | Wolff & Kaaber A/S | Method and a device for preparing a mixture of a solid and a liquid component |
| WO2012028291A1 (en) * | 2010-09-01 | 2012-03-08 | Cargill, Incorporated | Apparatus and method for mixing a powder with a liquid |
| CN105820325A (en) * | 2016-05-11 | 2016-08-03 | 李爱冰 | Method for preparing polycarbonate for glass light-guide plate |
| CN206334606U (en) * | 2016-12-16 | 2017-07-18 | 温州新星设备安装有限公司 | A kind of vertical mixing mixing apparatus with Bidirectional agitating apparatus |
| CN114133724A (en) * | 2022-01-17 | 2022-03-04 | 万华化学集团股份有限公司 | Polycarbonate composite material and preparation method thereof |
| CN216941751U (en) * | 2022-03-25 | 2022-07-12 | 河北建华塑胶制品有限公司 | PVC toper double screw extruder |
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|---|---|---|---|---|
| US5114240A (en) * | 1989-05-12 | 1992-05-19 | Wolff & Kaaber A/S | Method and a device for preparing a mixture of a solid and a liquid component |
| WO2012028291A1 (en) * | 2010-09-01 | 2012-03-08 | Cargill, Incorporated | Apparatus and method for mixing a powder with a liquid |
| CN105820325A (en) * | 2016-05-11 | 2016-08-03 | 李爱冰 | Method for preparing polycarbonate for glass light-guide plate |
| CN206334606U (en) * | 2016-12-16 | 2017-07-18 | 温州新星设备安装有限公司 | A kind of vertical mixing mixing apparatus with Bidirectional agitating apparatus |
| CN114133724A (en) * | 2022-01-17 | 2022-03-04 | 万华化学集团股份有限公司 | Polycarbonate composite material and preparation method thereof |
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