CN115301112A - Preparation process and processing equipment of ultrahigh-viscosity water-soluble pressure-sensitive adhesive - Google Patents
Preparation process and processing equipment of ultrahigh-viscosity water-soluble pressure-sensitive adhesive Download PDFInfo
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- CN115301112A CN115301112A CN202210872709.5A CN202210872709A CN115301112A CN 115301112 A CN115301112 A CN 115301112A CN 202210872709 A CN202210872709 A CN 202210872709A CN 115301112 A CN115301112 A CN 115301112A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
- B01F25/51—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is circulated through a set of tubes, e.g. with gradual introduction of a component into the circulating flow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/36—Mixing of ingredients for adhesives or glues; Mixing adhesives and gas
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Abstract
The invention relates to the field of pressure-sensitive adhesive production, in particular to a preparation process and processing equipment of an ultrahigh-viscosity water-soluble pressure-sensitive adhesive. The technical problems that the production efficiency of the acrylate pressure-sensitive adhesive is influenced because long-time stirring work is needed in the dissolving process of the acrylate monomer, and other reagents added later are difficult to be completely mixed with the whole colloid in the stirring process are solved. The invention provides a processing device of an ultrahigh-viscosity water-soluble pressure-sensitive adhesive, which comprises a power assembly, a side valve assembly and the like; the power assembly is connected with the side valve assembly. According to the invention, when the circulating fluid is formed, the acrylate monomer which is softened by the bubble in the reaction tank is continuously torn by the tearing component and the stirring component, and then the colloid in the reaction tank starts to work in an internal circulation manner, so that the circulation of the colloid in the reaction tank is improved, and the mixing effect of the colloid and other reagents added later is improved.
Description
Technical Field
The invention relates to the field of pressure-sensitive adhesive production, in particular to a preparation process and processing equipment of an ultrahigh-viscosity water-soluble pressure-sensitive adhesive.
Background
The pressure-sensitive adhesive comprises three types of pressure-sensitive adhesive tapes, pressure-sensitive adhesive label paper and pressure-sensitive adhesive sheets, in the production process, the acrylate pressure-sensitive adhesive is second to the rubber pressure-sensitive adhesive, is the most used pressure-sensitive adhesive, is a copolymer of an acrylate monomer and other ethylene monomers, and can be roughly divided into a crosslinking type and a non-crosslinking type.
In the process of producing the acrylate pressure-sensitive adhesive, because the acrylate monomer is insoluble in water and most organic solvents, heated ethanol is needed to be used for dissolving the acrylate monomer, the boiling point of the ethanol is low, the ethanol is easily volatilized in a large amount due to overhigh temperature, after the acrylate monomer is added into the heated ethanol, if the temperature is too low, the acrylate monomer can be softened only by long-time stirring, and then the softened acrylate monomer can be dissolved by long-time stirring, so that the production time of the acrylate pressure-sensitive adhesive is overlong, and the acrylate monomer generates high-viscosity colloid after being dissolved, so that other reagents added later are difficult to be completely mixed with the whole colloid in the stirring process, and the difficulty of the whole production process is high.
Disclosure of Invention
In order to overcome the defects that the production efficiency of the acrylate pressure-sensitive adhesive is influenced because long-time stirring work is needed in the dissolving process of the acrylate monomer, and other reagents added later are difficult to be completely mixed with the whole colloid in the stirring process, the invention provides a preparation process and processing equipment of the ultra-high viscosity water-soluble pressure-sensitive adhesive.
The technical scheme is as follows: a preparation process of an ultrahigh-viscosity water-soluble pressure-sensitive adhesive comprises the following working steps:
s1: feeding, namely adding raw materials with ammonium salt, an acrylate monomer and an ethanol solution into reaction equipment, heating the ethanol solution to ensure that the ethanol solution is heated to a boiling point, and slowly soaking the acrylate monomer by the heated ethanol solution;
s2: circularly stirring, continuously feeding, volatilizing and condensing the heated ethanol solution to form reflux liquid, mixing the reflux liquid with the continuously added raw materials, and shredding and dissolving the acrylate monomers which are soaked in the raw materials and are soft;
s3: adding the rest raw materials, finishing the feeding work, dissolving the acrylate monomer to form colloid, and adding the rest raw materials with the plasticizer and the slaked lime;
s4: stirring in an internal circulation mode, continuously adding other raw materials, and simultaneously circulating the formed colloid up and down to fully mix the colloid in the circulation with the other raw materials added later;
s5: and discharging, namely discharging and collecting the acrylic pressure-sensitive adhesive obtained by production.
As a preferred technical scheme of the invention, the processing equipment of the pressure-sensitive adhesive with the ultrahigh viscosity and the water solubility comprises a power component, a side valve component, a stirring component, a tearing component, a supporting frame, a reaction tank, a pressure release plate, a feed hopper, a condensing tube, a drainage tube and a screw rod; the support frame is fixedly connected with a reaction tank through a flange; the bottom of the reaction tank is provided with a discharge valve; the middle part of the pressure relief plate is rotatably connected with a rotary pipeline; the high-temperature gas in the reaction tank rises to the vicinity of a condensing pipe on the upper part of the reaction tank through a pressure relief plate on the upper side, is condensed into liquid, then drops into a liquid storage tank on the inner part of the upper side of the rotary pipeline, flows downwards into a drainage cylinder between the pressure relief plate and the reaction tank along a through groove between the liquid storage tank and a pipeline hole of the rotary pipeline, and returns to the bottom of the reaction tank to form circulating fluid; the top of the reaction tank is fixedly connected with a feed hopper; the lower end of the feed hopper is sleeved on the upper side of the rotary pipeline; the interior of the drainage cylinder is rotationally connected with a screw rod; the upper end of the screw rod is rotatably connected with the feed hopper; a first motor is fixedly connected to the upper side of the reaction tank; a plurality of reflux grooves are arranged around the middle part of the drainage cylinder; the middle part of the drainage cylinder is connected with a side valve component; the side valve assembly is tightly attached to each backflow groove; a stirring component is connected between the lower end of the screw rod and the mounting ring on the discharge valve; an output shaft of the first motor drives a screw rod to rotate, and the screw rod drives a stirring assembly to be matched with a tearing assembly at the lower end of the drainage cylinder to tear the added soft rubber; after the materials are added, the power component in the reaction tank drives the rotary pipeline, the side valve component and the tearing component to work, the side valve component leaves the reflux groove, the tearing component is far away from the stirring component, and the internal circulation work is started.
As a preferred technical scheme of the invention, a liquid collecting hopper is fixedly connected to the lower side of the feed hopper, and a middle pipeline of the condensing pipe is positioned inside the liquid collecting hopper.
As a preferred technical scheme of the invention, the screw blade on the screw rod is formed by alternately splicing a plurality of extrusion blades and mixing blades.
As a preferred technical scheme of the invention, the power assembly comprises a second motor, a rotating shaft, a first bevel gear, a second bevel gear and a push rod; a second motor is fixedly connected to the left side of the reaction tank; a rotating shaft is rotatably connected between the reaction tank and the pressure relief plate; the right end of the rotating shaft is fixedly connected with a first bevel gear; a second bevel gear is fixedly connected to the lower side of the rotary pipeline; the first bevel gear is meshed with the second bevel gear; a push rod is fixedly connected to the right side of the rotary pipeline; the push rod is connected with the side valve component; the push rod is connected with the tearing component.
As a preferred technical scheme of the invention, the side valve component comprises a first rotating ring, a fixed rod and a plug plate; the middle part of the drainage cylinder is rotatably connected with two first rotating rings which are respectively positioned at the upper side of the reflux groove and the lower side of the reflux groove; a plurality of fixed rods are fixedly connected between the two first rotating rings; a plug plate is fixedly connected inside each fixed rod; the plug plates are respectively tightly attached to one reflux groove; and a fixed rod on the right side is fixedly connected with a push rod.
As a preferred technical scheme of the invention, the stirring component comprises a second rotating ring, a rotating arm and a stirring blade; a plurality of spiral arms are fixedly connected around the lower end of the spiral rod; the upper side of the mounting ring is rotatably connected with a second rotating ring; the lower ends of the swing arms are fixedly connected with second rotating rings; the middle part of the rotary arm is fixedly connected with a stirring blade respectively.
As a preferable technical scheme of the invention, the middle parts of the radial arms are all arranged into S-shaped structures.
As a preferred technical scheme of the invention, the tearing assembly comprises a third rotating ring, a pushing block, an annular sliding frame, a wedge-shaped block, a spring piece and a hook piece; the lower side of the drainage cylinder is rotatably connected with a third rotating ring; two pushing blocks are fixedly connected to the lower side of the third rotating ring; the lower end of the drainage cylinder is connected with an annular sliding frame in a sliding manner; a spring part is fixedly connected between the annular sliding frame and the drainage cylinder; a wedge-shaped block is fixedly connected to the left side and the right side of the annular sliding frame respectively; the two push blocks are respectively tightly attached to a wedge-shaped block; a plurality of hook pieces are fixedly connected around the lower side of the annular sliding frame; the push rod is fixedly connected with the third rotating ring.
As a preferred technical scheme of the invention, the lower ends of the hook pieces are matched with the left grooves of the S-shaped structures in the middle of the radial arms, and the hook pieces are positioned in the left grooves of the S-shaped structures in the middle of one radial arm.
The invention has the beneficial effects that: during the production of the acrylate pressure-sensitive adhesive, high-temperature gas in a reaction tank rises to the vicinity of a condenser pipe on the upper part of the reaction tank through a pressure relief plate on the upper side, is condensed into liquid and then drops into a liquid storage tank on the inner part of the upper side of a rotary pipeline, and flows downwards into a drainage cylinder between the pressure relief plate and the reaction tank along a through groove between the liquid storage tank and a pipeline hole of the rotary pipeline, and returns to the bottom of the reaction tank to form circulating fluid;
after having added the material, power component in the retort drives the rotary pipeline, the side valve module with tear subassembly work, let the side valve module leave the backwash tank, let and tear the subassembly and keep away from the stirring subassembly, make the colloid in the retort continuous get into in the drainage section of thick bamboo from the backwash tank, and from the inside downward outflow retort bottom of drainage section of thick bamboo, start the inner loop work, improve the circulation of colloid in the retort, improve the mixed effect of colloid and the all the other reagents of back joining, thereby the all the other reagents of back joining have been solved and have been difficult to at the stirring in-process with the technical problem of whole colloid complete mixing.
Drawings
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a cross-sectional view of a reaction tank of the present application;
FIG. 3 is a perspective view of a power assembly of the present application;
FIG. 4 is an enlarged view of region F of the present application;
FIG. 5 is a schematic perspective view of the feed hopper and condenser tube of the present application;
FIG. 6 is a perspective view of a rotary conduit according to the present application;
FIG. 7 is a perspective view of a side valve assembly of the present application;
FIG. 8 is a perspective view of the middle of the drainage cartridge of the present application;
FIG. 9 is a perspective view of a screw according to the present application;
FIG. 10 is a schematic perspective view of a stirring assembly and a tear assembly of the present application;
FIG. 11 is a perspective view of the stirring assembly of the present application;
FIG. 12 is a perspective view of the radial arm of the present application;
fig. 13 is a perspective view of a rip assembly according to the present application.
Part names and serial numbers in the figure: 1-support frame, 2-reaction tank, 21-discharge valve, 22-mounting ring, 3-pressure relief plate, 31-rotary pipeline, 311-liquid storage tank, 312-through groove, 4-feed hopper, 41-liquid collecting hopper, 5-condenser pipe, 6-drainage cylinder, 61-return groove, 7-screw rod, 71-first motor, 72-extrusion blade, 73-mixing blade, 101-second motor, 102-rotary shaft, 103-first bevel gear, 104-second bevel gear, 105-push rod, 201-first rotating ring, 202-fixed rod, 203-plug plate, 301-second rotating ring, 302-rotary arm, 303-stirring blade, 401-third rotating ring, 402-push block, 403-annular sliding frame, 404-wedge block, 405-spring part and 406-hook piece.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings.
A preparation process of an ultrahigh-viscosity water-soluble pressure-sensitive adhesive comprises the following working steps:
s1: feeding, namely adding raw materials with ammonium salt, an acrylate monomer and an ethanol solution into reaction equipment, heating the ethanol solution to ensure that the ethanol solution is heated to a boiling point, and slowly soaking the acrylate monomer by the heated ethanol solution;
s2: circularly stirring, continuously feeding, volatilizing and condensing the heated ethanol solution to form reflux liquid, mixing the reflux liquid with the continuously added raw materials, and shredding and dissolving the acrylate monomers which are soaked in the raw materials and are soft;
s3: adding the rest raw materials, finishing the feeding work, dissolving the acrylate monomer to form colloid, and adding the rest raw materials with the plasticizer and the slaked lime;
s4: stirring in an internal circulation mode, continuously adding other raw materials, and simultaneously circulating the formed colloid up and down to fully mix the colloid in the circulation with the other raw materials added later;
s5: and discharging, namely discharging and collecting the produced acrylate pressure-sensitive adhesive.
Examples
An ultra-high viscosity water-soluble pressure-sensitive adhesive processing device is shown in figures 1-13 and comprises a power assembly, a side valve assembly, a stirring assembly, a tearing assembly, a support frame 1, a reaction tank 2, a pressure relief plate 3, a feed hopper 4, a condensing tube 5, a drainage tube 6 and a screw rod 7; the support frame 1 is connected with a reaction tank 2 through a flange bolt; the bottom of the reaction tank 2 is provided with a discharge valve 21; the upper part of the discharge valve 21 is fixedly connected with a mounting ring 22; the inner upper side of the reaction tank 2 is connected with a pressure relief plate 3 through bolts; the middle part of the pressure relief plate 3 is rotatably connected with a rotary pipeline 31; a liquid storage tank 311 is arranged inside the upper side of the rotary pipeline 31; a plurality of through grooves 312 are arranged between the liquid storage tank 311 and the pipeline holes of the rotary pipeline 31; the top of the reaction tank 2 is connected with a feed hopper 4 through a bolt; the lower end of the feed hopper 4 is sleeved on the upper side of the rotating pipeline 31; the upper part of the reaction tank 2 is provided with a condensing pipe 5; a liquid collecting hopper 41 is fixedly connected to the lower side of the feed hopper 4, and a middle pipeline of the condensing pipe 5 is positioned inside the liquid collecting hopper 41; the lower side of the pressure relief plate 3 is connected with a drainage cylinder 6 through a bolt; the lower end of the drainage tube 6 is fixedly connected with the reaction tank 2; the lower side of the rotary pipeline 31 is communicated with the drainage cylinder 6; a screw rod 7 is rotatably connected inside the drainage cylinder 6; the screw propeller blades on the screw rod 7 are formed by alternately splicing a plurality of extrusion propeller blades 72 and mixing propeller blades 73; the upper end of the screw rod 7 is rotatably connected with the feed hopper 4; the upper side of the reaction tank 2 is connected with a first motor 71 through bolts; an output shaft of the first motor 71 is fixedly connected with the screw rod 7; a plurality of reflux grooves 61 are arranged around the middle part of the drainage cylinder 6; the middle part of the drainage cylinder 6 is connected with a side valve component; the side valve assembly is closely attached to each return groove 61; the reaction tank 2 is connected with a power assembly; the power assembly is connected with the pressure relief plate 3; the power assembly is connected with the rotary pipeline 31; the power assembly is connected with the side valve assembly; the lower end of the screw rod 7 is connected with a stirring component; the stirring assembly is connected with the mounting ring 22; the lower end of the drainage tube 6 is connected with a tearing component; the power assembly is connected with the tearing assembly.
As shown in fig. 1, 3 and 4, the power assembly comprises a second motor 101, a rotating shaft 102, a first bevel gear 103, a second bevel gear 104 and a push rod 105; a second motor 101 is connected to the left side of the reaction tank 2 through a bolt; a rotating shaft 102 is rotatably connected between the reaction tank 2 and the pressure relief plate 3; a first bevel gear 103 is fixedly connected to the right end of the rotating shaft 102; a second bevel gear 104 is fixedly connected to the lower side of the rotary pipeline 31; the first bevel gear 103 is meshed with the second bevel gear 104; a push rod 105 is connected to the right side of the rotary pipe 31 through a bolt; the push rod 105 is connected with the side valve assembly; a push rod 105 is connected to the tear assembly.
As shown in fig. 7, the side valve assembly includes a first rotary ring 201, a fixed rod 202 and a plug plate 203; the middle part of the drainage tube 6 is rotatably connected with two first rotating rings 201, and the two first rotating rings 201 are respectively positioned on the upper side of the reflux groove 61 and the lower side of the reflux groove 61; a plurality of fixing rods 202 are connected between the two first rotating rings 201 through bolts; a plug plate 203 is fixedly connected inside each fixed rod 202; the plug plates 203 are respectively tightly attached to one reflux groove 61; the right one of the fixing rods 202 is bolted to the push rod 105.
As shown in fig. 10 and 11, the stirring assembly includes a second rotating ring 301, a rotating arm 302 and a stirring blade 303; a plurality of radial arms 302 are connected with the lower end of the surrounding screw rod 7 through bolts; the upper side of the mounting ring 22 is rotatably connected with a second rotating ring 301; the lower ends of the swing arms 302 are fixedly connected with second rotating rings 301; the middle parts of the radial arms 302 are respectively welded with a stirring blade 303.
As shown in fig. 12, the radial arms 302 are each provided with an S-shaped configuration at their middle portions.
As shown in fig. 10 and 13, the tearing assembly comprises a third rotating ring 401, a pushing block 402, a ring-shaped sliding frame 403, a wedge-shaped block 404, a spring element 405 and a hook piece 406; the lower side of the drainage tube 6 is rotatably connected with a third rotating ring 401; two push blocks 402 are welded on the lower side of the third rotating ring 401; the lower end of the drainage tube 6 is connected with an annular sliding frame 403 in a sliding way; a spring part 405 is fixedly connected between the annular sliding frame 403 and the drainage cylinder 6; a wedge block 404 is connected to each bolt on the left side and the right side of the annular sliding frame 403; two push blocks 402 are respectively tightly attached to a wedge block 404; a plurality of hook pieces 406 are fixedly connected around the lower side of the annular sliding frame 403; the push rod 105 is fixedly connected with a third rotating ring 401.
The lower ends of the hook pieces 406 are all adapted to the left side grooves of the middle S-shaped structure of the radial arm 302, and each of the hook pieces 406 is located in the left side groove of the middle S-shaped structure of one radial arm 302.
Before the reaction, external coolant conveying equipment is used, coolant is conveyed to the interior of the condenser pipe 5 through a liquid inlet pipe on the left side of the condenser pipe 5, a liquid outlet pipe on the right side of the condenser pipe 5 is externally connected with coolant recovery equipment, the coolant continuously enters the condenser pipe 5 and is discharged to the coolant recovery equipment from the liquid outlet pipe, then an external electromagnetic heater heats the reaction tank 2, meanwhile, the external raw material conveying equipment slowly conveys raw materials with ammonium salt, acrylate monomers and ethanol solution into the feed hopper 4, the first motor 71 drives the spiral rod 7 to rotate, the raw materials pass through the rotary pipeline 31 along the feed hopper 4 and enter the drainage cylinder 6, the rotary spiral rod 7 continuously conveys the raw materials downwards to the bottom of the reaction tank 2 through the extrusion blades 72, and a slow feeding process is started.
Have the ammonium salt, acrylate monomer and ethanol solution's raw materials get into retort 2 after the bottom, ethanol solution constantly heaies up to the boiling point, make the ethanol solution after the heating slowly soften acrylate monomer bubble, hob 7 drives spiral arm 302 simultaneously, stirring leaf 303 and second change 301 rotate, stirring in the ethanol solution of stirring leaf 303 in retort 2 bottom forms the swirl, the acrylate monomer of deposit in retort 2 bottom colludes piece 406 along with the continuous striking of swirl, simultaneously by rotatory spiral arm 302 with the static piece 406 that colludes the acrylate monomer of rapid movement shreds, accelerate acrylate monomer's solution rate.
After the ethanol solution is heated to the boiling point, volatile gas is continuously generated in the ethanol solution and upwards passes through the pressure relief plate 3, the volatile gas is gathered around the condensation pipe 5 along the inner top of the reaction tank 2 and is gathered into liquid when contacting the condensation pipe 5, the liquid drops downwards into the liquid collecting hopper 41 and falls downwards into the liquid storage tank 311 of the rotary pipeline 31 along the liquid collecting hopper 41, the liquid in the liquid storage tank 311 continuously accumulates and rises along with the liquid in the liquid storage tank 311, the liquid in the liquid storage tank 311 enters the drainage cylinder 6 through the through groove 312 and returns downwards to the bottom of the reaction tank 2 to form circulating fluid, and the circulating fluid continuously sprays out from the lower end of the drainage cylinder 6 and continuously impacts the acrylate monomer, so that the acrylate monomer is turned over and downwards at the bottom of the reaction tank 2, the foamed and soft acrylate monomer in the reaction tank 2 is continuously torn by the rotary arm 302 and the hook piece, and the dissolving speed of the acrylate monomer is further accelerated.
After the feeding operation is finished, the acrylate monomers are continuously shredded by the rotating arm 302 and the hook piece 406, the acrylate monomers are quickly dissolved in the ethanol solution and form high-viscosity colloid under the combination with ammonium salt, then the heating power of the reaction tank 2 is reduced by an external electromagnetic heater, the temperature in the reaction tank 2 is reduced to be below the boiling point of the ethanol solution, the volatilization of the ethanol solution is reduced, and then the external raw material conveying equipment slowly conveys the rest raw materials with the plasticizer and the slaked lime into the feed hopper 4, so that the rest raw materials enter the bottom of the reaction tank 2 along the drainage tube 6.
During the period of conveying the rest raw materials, the output shaft of the second motor 101 drives the rotating shaft 102 and the first bevel gear 103 to rotate, the first bevel gear 103 is meshed with the second bevel gear 104 to drive the rotating pipeline 31 to rotate, the rotating pipeline 31 drives the push rod 105 to stir the fixed rod 202, and drives the rest first rotating ring 201, the fixed rod 202 and the plug plate 203 to rotate around the axis of the drainage cylinder 6, so that the plug plate 203 leaves the backflow groove 61, then the colloid in the reaction tank 2 is continuously extruded into the drainage cylinder 6 from the backflow groove 61 under the influence of gravity, the colloid is fully mixed with the rest raw materials added into the drainage cylinder 6 during the period of entering the drainage cylinder 6 and is sprayed out to the bottom of the reaction tank 2 from the lower end of the drainage cylinder 6, and meanwhile, the rotating stirring blades 303 continuously stir in the colloid, and on the basis of improving the fluidity of the colloid, the mixing effect of the colloid and the rest raw materials is enhanced.
When the push rod 105 pulls the fixed rod 202 to drive the plug plate 203 to leave the return channel 61, the push rod 105 pulls the third rotary ring 401 to drive the push block 402 to leave the wedge block 404, and the wedge block 404 loses the blocking of the push block 402, the spring element 405 in the initially compressed state drives the annular sliding frame 403, the wedge block 404 and the hook piece 406 to rise upwards, and when the hook piece 406 passes through the rotary arm 302, the hook piece 406 pushes the middle S-shaped structure of the rotary arm 302 to bend upwards and deform, so that the hook piece 406 smoothly passes through the rotary arm 302, and after the hook piece 406 leaves the rotary arm 302, the rotary arm 302 is restored to realize that the hook piece 406 is far away from the rotary arm 302, thereby reducing the resistance of vortex formed by stirring of the stirring blades 303 in alternation in the bottom of the reaction tank 2.
After finishing the processing of the acrylate pressure-sensitive adhesive, the first motor 71 is turned off, and the acrylate pressure-sensitive adhesive obtained in the reaction tank 2 is collected into an external collection tank through the discharge valve 21.
The technical principle of the embodiment of the present invention is described above in conjunction with the specific embodiments. The description is made for the purpose of illustrating the principles of embodiments of the present invention and should not be construed in any way as limiting the scope of embodiments of the present invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, and these embodiments will fall within the scope of the present invention.
Claims (10)
1. A preparation process of an ultrahigh-viscosity water-soluble pressure-sensitive adhesive is characterized by comprising the following working steps:
s1: feeding, namely adding raw materials with ammonium salt, an acrylate monomer and an ethanol solution into reaction equipment, heating the ethanol solution to ensure that the ethanol solution is heated to a boiling point, and slowly soaking the acrylate monomer in the heated ethanol solution;
s2: circularly stirring, continuously feeding, volatilizing the heated ethanol solution, condensing to obtain reflux liquid, mixing with the continuously added raw materials, and shredding and dissolving the soft acrylate monomer in the raw materials;
s3: adding the rest raw materials, finishing the feeding work, dissolving the acrylate monomer to form colloid, and adding the rest raw materials with the plasticizer and the slaked lime;
s4: stirring in an internal circulation manner, continuously adding other raw materials, and simultaneously circulating the formed colloid up and down to fully mix the colloid in the circulation with the other raw materials added later;
s5: and discharging, namely discharging and collecting the acrylic pressure-sensitive adhesive obtained by production.
2. A processing equipment of pressure sensitive adhesive with ultra-high viscosity and water solubility is applicable to the preparation process of pressure sensitive adhesive with ultra-high viscosity and water solubility as claimed in claim 1, and comprises a support frame (1) and a reaction tank (2); the support frame (1) is fixedly connected with a reaction pot (2) through a flange; the bottom of the reaction tank (2) is provided with a discharge valve (21); the method is characterized in that: the device also comprises a power component, a side valve component, a stirring component, a tearing component, a pressure relief plate (3), a feed hopper (4), a condensing tube (5), a drainage tube (6) and a screw rod (7); the middle part of the pressure relief plate (3) is rotatably connected with a rotary pipeline (31); high-temperature gas in the reaction tank (2) rises to the vicinity of a condensing pipe (5) at the upper part of the reaction tank (2) through a pressure relief plate (3) at the upper side, is condensed into liquid, then drops into a liquid storage tank (311) at the inner part at the upper side of a rotary pipeline (31), flows downwards into a drainage cylinder (6) between the pressure relief plate (3) and the reaction tank (2) along a through groove (312) between the liquid storage tank (311) and a pipeline hole of the rotary pipeline (31), and returns to the bottom of the reaction tank (2) to form circulating fluid; the top of the reaction tank (2) is fixedly connected with a feed hopper (4); the lower end of the feed hopper (4) is sleeved on the upper side of the rotary pipeline (31); a screw rod (7) is rotatably connected inside the drainage cylinder (6); the upper end of the screw rod (7) is rotationally connected with the feed hopper (4); a first motor (71) is fixedly connected with the upper side of the reaction tank (2); a plurality of reflux grooves (61) are arranged around the middle part of the drainage cylinder (6); the middle part of the drainage cylinder (6) is connected with a side valve component; the side valve assembly is closely attached to each backflow groove (61); a stirring component is connected between the lower end of the screw rod (7) and a mounting ring (22) on the discharge valve (21); an output shaft of the first motor (71) drives the screw rod (7) to rotate, and the screw rod (7) drives the stirring component to be matched with the tearing component at the lower end of the drainage cylinder (6) to tear the added soft rubber; after the materials are added, a power assembly in the reaction tank (2) drives the rotary pipeline (31), the side valve assembly and the tearing assembly to work, the side valve assembly leaves the reflux groove (61), the tearing assembly is far away from the stirring assembly, and the internal circulation work is started.
3. The processing equipment of the ultra-high viscosity water-soluble pressure-sensitive adhesive as claimed in claim 2, wherein: a liquid collecting hopper (41) is fixedly connected to the lower side of the feed hopper (4), and a middle pipeline of the condensing pipe (5) is positioned inside the liquid collecting hopper (41).
4. The processing equipment of the ultra-high viscosity water-soluble pressure-sensitive adhesive as claimed in claim 2, wherein: the screw blades on the screw rod (7) are formed by alternately splicing a plurality of extrusion blades (72) and mixing blades (73).
5. The processing equipment of the ultra-high viscosity water-soluble pressure-sensitive adhesive as claimed in claim 2, wherein: the power assembly comprises a second motor (101), a rotating shaft (102), a first bevel gear (103), a second bevel gear (104) and a push rod (105); a second motor (101) is fixedly connected to the left side of the reaction tank (2); a rotating shaft (102) is rotatably connected between the reaction tank (2) and the pressure relief plate (3); a first bevel gear (103) is fixedly connected to the right end of the rotating shaft (102); a second bevel gear (104) is fixedly connected to the lower side of the rotary pipeline (31); the first bevel gear (103) is meshed with the second bevel gear (104); a push rod (105) is fixedly connected to the right side of the rotary pipeline (31); a push rod (105) is connected with the side valve component; a push rod (105) is connected to the tear assembly.
6. The processing equipment of the ultra-high viscosity water-soluble pressure-sensitive adhesive as claimed in claim 5, wherein: the side valve assembly comprises a first rotating ring (201), a fixed rod (202) and a plug plate (203); the middle part of the drainage tube (6) is rotatably connected with two first rotating rings (201), and the two first rotating rings (201) are respectively positioned on the upper side of the reflux groove (61) and the lower side of the reflux groove (61); a plurality of fixed rods (202) are fixedly connected between the two first rotating rings (201); a plug plate (203) is fixedly connected inside each fixed rod (202); the plug plates (203) are respectively tightly attached to one backflow groove (61); the right fixed rod (202) is fixedly connected with the push rod (105).
7. The processing equipment of the ultra-high viscosity water-soluble pressure-sensitive adhesive as claimed in claim 2, wherein: the stirring component comprises a second rotating ring (301), a rotating arm (302) and a stirring blade (303); a plurality of spiral arms (302) are fixedly connected around the lower end of the spiral rod (7); the upper side of the mounting ring (22) is rotationally connected with a second rotating ring (301); the lower ends of the radial arms (302) are fixedly connected with second rotating rings (301); the middle parts of the rotating arms (302) are respectively fixedly connected with a stirring blade (303).
8. The processing equipment for the ultra-high viscosity water-soluble pressure-sensitive adhesive as claimed in claim 6, wherein: the middle parts of the radial arms (302) are all set to be S-shaped structures.
9. The processing equipment of the ultra-high viscosity water-soluble pressure-sensitive adhesive as claimed in claim 5, wherein: the tearing assembly comprises a third rotating ring (401), a pushing block (402), an annular sliding frame (403), a wedge block (404), a spring piece (405) and a hook piece (406); the lower side of the drainage tube (6) is rotatably connected with a third rotating ring (401); two pushing blocks (402) are fixedly connected to the lower side of the third rotating ring (401); the lower end of the drainage cylinder (6) is connected with an annular sliding frame (403) in a sliding manner; a spring piece (405) is fixedly connected between the annular sliding frame (403) and the drainage cylinder (6); a wedge block (404) is fixedly connected to the left side and the right side of the annular sliding frame (403) respectively; the two push blocks (402) are respectively tightly attached to a wedge block (404); a plurality of hook sheets (406) are fixedly connected around the lower side of the annular sliding frame (403); the push rod (105) is fixedly connected with a third rotating ring (401).
10. The processing equipment for the ultra-high viscosity water-soluble pressure-sensitive adhesive as claimed in claim 9, wherein: the lower ends of the hook pieces (406) are all adapted to the left grooves of the S-shaped structure in the middle of the radial arm (302), and the hook pieces (406) are located in the left grooves of the S-shaped structure in the middle of one radial arm (302).
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