Low-surface-energy polyacrylate pressure-sensitive adhesive for pasting and preparation device of low-surface-energy polyacrylate pressure-sensitive adhesive

Abstract

The invention relates to the technical field of high polymer materials, in particular to an adhesive low-surface-energy polyacrylate pressure-sensitive adhesive and a preparation device thereof.The adhesive low-surface-energy polyacrylate pressure-sensitive adhesive comprises a stirring reaction cylinder and is characterized in that a heating ring is arranged on the outer surface of the stirring reaction cylinder, and an electric heating rod is arranged in the heating ring; a mounting ring is mounted on the inner side wall of the stirring reaction cylinder, a groove is formed in the surface of the mounting ring, an adaptive plug is arranged in the groove, and the top surface of the adaptive plug is trapezoidal. According to the invention, the polyacrylate prepolymer is self-made, so that the cost is saved, and the performance of the pressure-sensitive adhesive can be randomly adjusted; uV photocuring solvent-free polymerization is adopted, so that the acrylate pressure-sensitive adhesive has excellent stripping force, initial adhesion, persistent adhesion, excellent water resistance, excellent weather resistance and excellent high and low temperature resistance, and has excellent adhesion capacity to a low-surface-energy adhered object.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of high polymer materials, in particular to a polyacrylate pressure-sensitive adhesive with low surface energy and a preparation device thereof. BACKGROUND

[0002] The pressure-sensitive adhesive is a kind of adhesive that can bond the adherend by applying pressure, and is also a kind of adhesive commonly used in daily life. At present, the polyacrylate pressure-sensitive adhesive is mainly divided into solvent type pressure-sensitive adhesive and water-based pressure-sensitive adhesive, and its application range covers civil, national defense, aerospace and other fields. The solvent type polyacrylate pressure-sensitive adhesive has the advantages of high peeling, high initial adhesion, high holding adhesion, water resistance, weather resistance and the like, but it uses organic solvent as the solvent, and coating will produce a large amount of volatile organic solvent to pollute the environment, so that the application is limited to a certain extent.

[0003] In view of this, the Chinese application patent No. CN116617920A discloses a preparation device and a preparation method of an organic silicon pressure-sensitive adhesive, which comprises a machine body and a machine cover, further comprises a vibration mechanism, two lifting and swinging mechanisms, a lifting stirring mechanism and a scraping stirring mechanism; the vibration mechanism is connected with the machine cover, and the two lifting and swinging mechanisms are arranged on the front and back surfaces of the machine body.

[0004] The water-based polyacrylate pressure-sensitive adhesive uses water as the solvent and is green and environmentally friendly, but its performance is poorer than that of the solvent type polyacrylate pressure-sensitive adhesive, and its application range is also limited to a certain extent; the UV light curing hot melt pressure-sensitive adhesive well solves the shortcomings of the two, has excellent performance of the solvent type pressure-sensitive adhesive, adopts bulk polymerization and does not produce volatile organic solvent, but when the pressure-sensitive agent is stirred and heated, it cannot be quickly stirred and heated at the same time, and too much material is accumulated on the inner wall of the processing cylinder during the stirring process, so that the material is difficult to be scraped off subsequently, and when the pressure-sensitive agent is discharged, the overall discharging rate is slow, and the feeding speed cannot be controlled, so that the preparation of the pressure-sensitive agent has certain limitations, and therefore it is urgent to improve and perfect the above problems. SUMMARY

[0005] The present application aims to provide a kind of pasting low surface energy polyacrylate pressure sensitive adhesive and its preparation device, to solve the water-based acrylic pressure sensitive adhesive described in the background art with water as solvent, green and environmentally friendly, but its performance is poorer than solvent-based acrylic pressure sensitive adhesive, its use range is also limited to a certain extent;UV light curing hot melt pressure sensitive adhesive is a good solution to the shortcomings of both, both solvent-based pressure sensitive adhesive has excellent performance, using bulk polymerization, no volatile organic solvent is generated, but when the pressure sensitive agent is heated and stirred, it cannot be quickly and simultaneously visually stirred and heated, and during the stirring process, too much material is accumulated on the inner wall of the processing cylinder, making it difficult to remove the material subsequently, and when the pressure sensitive agent is discharged, the overall discharge rate is slow, and the feeding speed cannot be controlled, which has certain limitations in the preparation of pressure sensitive agent.

[0006] To achieve the above object, the present application provides the following technical scheme: a kind of pasting low surface energy polyacrylate pressure sensitive adhesive, by mass percentage, comprising:

[0007] Soft monomer 75-90%

[0008] Functional monomer 5-20%

[0009] Crosslinking monomer 3-8%

[0010] Chain transfer agent 0.1-0.5%

[0011] Photoinitiator 0.3-1.0%

[0012] The soft monomer is one or more of butyl acrylate, isooctyl acrylate, octadecyl acrylate, tetradecyl acrylate, heptadecyl acrylate, hexadecyl acrylate, isodecyl acrylate, ethyl acrylate and isobutyl acrylate;

[0013] The functional monomer is one or more of vinyl carbazole, N-vinylimidazole, N-vinyl oxazolidone, dodecyl vinyl ether, octadecyl vinyl ether, vinyl phenyl acetate, N-vinyl pyrrolidone, isopropyl vinyl ether;

[0014] The crosslinking monomer is one or more of glycidyl methacrylate, divinylbenzene, acrylamide, N, N-methylene bisacrylamide, triallyl cyanurate, pentaerythritol triallyl ether, cyclohexane dimethanol divinyl ether, trimethylolpropane triacrylate, trimethylolpropane diacryl ether, triallyl cyanurate, ethylene glycol monoallyl ether and N-methoxy methyl acrylamide;

[0015] The chain transfer agent is one or more of n-dodecanethiol, tertiary dodecanethiol, tetrabromomethane;

[0016] The photosensitizer is one or more of 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide (TPO), 2-hydroxy-2-methyl-1-phenyl-1-propanone (1173), benzoin dimethyl ether (BDK), 4-chlorobenzophenone (CBP);

[0017] The preparation of the polyacrylate pressure-sensitive adhesive comprises the following steps:

[0018] (1) Preparation of mixed monomer solution: mix all soft monomers, crosslinking monomers, functional monomers, and chain transfer agents at a stirring speed of 300-800 rpm for 15-45 minutes to obtain a mixed monomer solution;

[0019] (2) Preparation of photoinitiator solution: take out 10-20% of the mixed monomer solution from step (1) and add 50-70% of the photoinitiator to it. Stir until the photoinitiator is dissolved to obtain the photoinitiator solution;

[0020] (3) Preparation of prepolymer: add the remaining mixed monomer solution from step (1) to the reaction bottle, charge N2 for 10 minutes, then add 5-10% of the photoinitiator solution from step (2), and irradiate with ultraviolet light for 10-30 minutes. The solution at the bottom of the kettle becomes significantly more viscous, and a seed solution is obtained;

[0021] (4) Add the remaining photoinitiator solution from step (2) to the seed solution from step (3) dropwise while irradiating with ultraviolet light. The dropwise addition takes 0.5-1 hour. After the dropwise addition is complete, increase the temperature to 130-150°C and stir for 1-2 hours. Turn off the ultraviolet light and add the remaining photoinitiator. Stir for 30-45 minutes, filter the material at 130-150°C, and cool to obtain the low-surface-energy polyacrylate pressure-sensitive adhesive.

[0022] A device for preparing a low-surface-energy polyacrylate pressure-sensitive adhesive comprises a stirring reaction cylinder. The outer surface of the stirring reaction cylinder is provided with a heating ring, and the inside of the heating ring is provided with an electric heating rod. The inner side wall of the stirring reaction cylinder is installed with a mounting ring, and the surface of the mounting ring is provided with a groove. The inside of the groove is provided with an adaptive plug. The top surface of the adaptive plug is trapezoidal. The upper surface of the stirring reaction cylinder is installed with a top ring, and the inside of the top ring is inserted and installed with a piston rod. The outer surface of the piston rod is provided with a limiting telescopic bracket. The lower end of the top ring is provided with a first telescopic cylinder. The outer surface of the first telescopic cylinder is installed with a scraping assembly. The back of the stirring reaction cylinder is installed with a supporting assembly. The inner side wall of the supporting assembly is installed with a driving assembly. The lower end of the driving assembly is installed with a conveying assembly.

[0023] The scraping assembly comprises a scraping ring mounted on the outer surface of the first telescopic cylinder, the inner wall of the scraping ring is provided with an arc-shaped ring, and the lower surface of the scraping ring is provided with a heating cylinder;

[0024] The support assembly comprises a side frame mounted on the back of the stirring reaction cylinder, and the inner wall of the side frame is provided with a support plate;

[0025] The driving assembly comprises a bidirectional motor mounted on the upper surface of the support plate.

[0026] Preferably, the inner wall of the scraping ring is provided with a support block, the upper surface of the support block is provided with a mounting box, the inner top surface of the mounting box is provided with a first motor, the output end of the first motor is provided with a first gear, the outer surface of the first gear is engaged with a second gear, the lower surfaces of the second gear and the first gear are provided with a stirring shaft, the lower end of the stirring shaft is provided with a mounting column, the bottom end of the mounting column is internally provided with a mounting bearing, the inner wall of the mounting bearing is provided with a contact rod, the back of the stirring reaction cylinder is provided with a side frame, the inner wall of the side frame is provided with a support plate, the front surface of the bidirectional motor penetrates through the front end surface of the side frame and is provided with a rotating disc, the outer surface of the rotating disc is provided with a convex column, the outer surface of the convex column is provided with a reciprocating frame, and the lower surface of the reciprocating frame is in contact with the upper surface of the piston rod.

[0027] Preferably, the back of the bidirectional motor is provided with a ratchet column, the back of the ratchet column is provided with a first bevel gear column, the right side surface of the first bevel gear column is engaged with a second bevel gear column, the right side surface of the second bevel gear column is engaged with a bevel gear column screw, the outer surface of the bevel gear column screw is movably provided with a movable frame, the outer surface of the movable frame is provided with a guide rod, the lower surface of the movable frame is in contact with the surface of the top ring, and the movable frame and the top ring are connected through bolts.

[0028] Preferably, the conveying assembly comprises a connecting plate mounted on the lower surface of the adapter plug, a first rack plate and a second telescopic cylinder are sequentially mounted on the lower end of the connecting plate from front to back, the lower end of the second telescopic cylinder is provided with a mounting plate, and the mounting plate is mounted on the inner wall of the stirring reaction cylinder.

[0029] Preferably, the front surface of the first rack plate is engaged with a gear rod, the upper surface of the gear rod is engaged with a second rack plate, the outer surface of the second rack plate is provided with a limiting frame, the limiting frame is mounted on the inner wall of the stirring reaction cylinder, the gear rod is inserted into the interior of the stirring reaction cylinder, and the connecting plate, the first rack plate and the gear rod are all mounted below the mounting ring.

[0030] Preferably, the front surface of the second rack plate is provided with a guide-out rack, the back surface of the guide-out rack is provided with an adaptive hole, the adaptive hole and the resisting rod are adapted to each other, and the inside of the guide-out rack is provided with a pressure sensor.

[0031] Preferably, the front end of the guide-out rack is provided with an out-feed cylinder, and the out-feed cylinder and the guide-out rack are adapted to each other.

[0032] Preferably, the back surface of the out-feed cylinder is provided with an in-feed groove, the in-feed groove and the guide-out rack are adapted to each other, the inside top surface of the out-feed cylinder is provided with an electric push rod, and the lower end of the electric push rod is provided with a piston cylinder.

[0033] Preferably, the inside of the out-feed cylinder is provided with an arc-shaped sheet, the upper end of the arc-shaped sheet is provided with an iron ring, and the iron ring and the back surface of the piston cylinder are magnetically attracted to each other.

[0034] Compared with the prior art, the present application has the following beneficial effects:

[0035] 1. The adhesive for sticking low surface energy polyacrylate and its preparation device, by using self-made polyacrylate prepolymer, the cost is saved, and the performance of the pressure-sensitive adhesive can be adjusted at will; by using UV light curing and solvent-free polymerization, the acrylic pressure-sensitive adhesive has excellent peeling force, initial adhesion, holding adhesion, excellent water resistance, excellent weather resistance, high and low temperature resistance, and excellent sticking ability for low surface energy objects; by using UV light curing, the process is green and environmentally friendly, energy consumption is reduced, operation is simple, coating speed is fast, and production efficiency is improved; the surface tension of the low surface energy object to be stuck, such as EVA, PP, PE, ABS, and polytetrafluoroethylene, is less than or equal to 32 mN / m, and the object has excellent sticking effect.

[0036] 2. The adhesive for sticking low surface energy polyacrylate and its preparation device, by cooperation of the scraping assembly and the supporting assembly, the material on the inner wall of the stirring reaction cylinder can be repeatedly scraped by up-down movement of the scraping ring, the scraping ring can also perform heat transfer with the heating ring, the heat emitted by the heating ring enters the inside of the stirring reaction cylinder through the scraping ring, the material in the stirring reaction cylinder is repeatedly stirred up and down by the stirring shaft, and the operations of heating, stirring, and scraping can be performed at the same time.

[0037] 3. The adhesive for sticking low surface energy polyacrylate and its preparation device, by cooperation of the driving assembly and the conveying assembly, the speed of the material entering the inside of the out-feed cylinder is slowed down during pressure discharge, the in-feed groove is in the maximum state during normal discharge, the speed of the material entering the inside of the out-feed cylinder is increased, the overall discharge effect is good, and the design is ingenious. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1The three-dimensional schematic diagram of the installation ring and the top ring structure of the present application;

[0039] Figure 2 The exploded schematic diagram of the installation ring and the top ring structure of the present application;

[0040] Figure 3 The three-dimensional schematic diagram of the movable frame and the bidirectional motor structure of the present application;

[0041] Figure 4 The three-dimensional schematic diagram of the discharge cylinder and the guide discharge frame structure of the present application;

[0042] Figure 5 The three-dimensional schematic diagram of the connecting plate and the first rack plate structure of the present application;

[0043] Figure 6 The three-dimensional schematic diagram of the first gear and the installation column structure of the present application;

[0044] Figure 7 The exploded schematic diagram of the stirring shaft and the contact rod structure of the present application;

[0045] Figure 8 The exploded schematic diagram of the discharge cylinder and the guide discharge frame structure of the present application;

[0046] Figure 9 The exploded sectional view schematic diagram of the discharge cylinder and the piston cylinder structure of the present application;

[0047] Figure 10 The exploded schematic diagram of the installation ring and the adapter plug structure of the present application;

[0048] Figure 11 The test result table of the embodiment of the present application.

[0049] In the figure: 1, stirring reaction cylinder; 2, heating ring; 3, installation ring; 4, adapter plug; 5, top ring; 6, piston rod; 7, first telescopic cylinder; 8, scraping ring; 9, arc-shaped ring; 10, heating cylinder; 11, support block; 12, installation box; 13, first motor; 14, first gear; 15, second gear; 16, stirring shaft; 17, installation column; 18, installation bearing; 19, contact rod; 20, side frame; 21, support plate; 22, bidirectional motor; 23, rotating disc; 24, convex column; 25, reciprocating frame; 26, first bevel gear column; 27, second bevel gear column; 28, bevel gear column screw; 29, movable frame; 30, connecting plate; 31, first rack plate; 32, second telescopic cylinder; 33, gear rod; 34, second rack plate; 35, limiting frame; 36, installation plate; 37, guide discharge frame; 38, adapter hole; 39, pressure sensor; 40, discharge cylinder; 41, electric push rod; 42, piston cylinder; 43, feeding groove; 44, arc-shaped piece; 45, limiting telescopic frame; 46, ratchet column. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0051] Please refer to Figures 1-11 The present application provides an embodiment:

[0052] A kind of low surface energy polyacrylate pressure sensitive adhesive and its preparation device are pasted, the stirring reaction cylinder 1, heating ring 2, heating cylinder 10, first motor 13, bidirectional motor 22, pressure sensor 39 and electric push rod 41 used in the application are all products that can be directly purchased in market, its principle and connection mode are all prior art that is familiar to those skilled in the art, therefore, it is not described here, by mass percentage, including:

[0053] Soft monomer 75-90%

[0054] Functional monomer 5-20%

[0055] Crosslinking monomer 3-8%

[0056] Chain transfer agent 0.1-0.5%

[0057] Photoinitiator 0.3-1.0%

[0058] The soft monomer is one or several of butyl acrylate, isooctyl acrylate, octadecyl acrylate, tetradecyl acrylate, heptadecyl acrylate, hexadecyl acrylate, isodecyl acrylate, ethyl acrylate and isobutyl acrylate;

[0059] The functional monomer is one or several of vinyl carbazole, N-vinyl imidazole, N-vinyl oxazolidone, dodecyl vinyl ether, octadecyl vinyl ether, vinyl phenyl acetate, N-vinyl pyrrolidone, isopropyl vinyl ether;

[0060] The crosslinking monomer is one or several of glycidyl methacrylate, divinyl benzene, acrylamide, N, N-methylene bisacrylamide, triallyl cyanurate, pentaerythritol triallyl ether, cyclohexane dimethanol divinyl ether, trimethylolpropane triacrylate, trimethylolpropane diacryl ether, triallyl cyanurate, ethylene glycol monoallyl ether and N-methoxy methyl acrylamide;

[0061] The chain transfer agent is one or several of n-dodecanethiol, tertiary dodecanethiol, tetrabromomethane;

[0062] The photosensitizer is one or several of 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide (TPO), 2-hydroxy-2-methyl-1-phenyl-1-propanone (1173), benzoin dimethyl ether (BDK), 4-chlorobenzophenone (CBP);

[0063] The preparation of the polyacrylate pressure-sensitive adhesive comprises the following steps:

[0064] (1) Preparation of mixed monomer solution: mix all soft monomers, crosslinking monomers, functional monomers, chain transfer reagents, stir at a speed of 300-800 rpm for 15-45 minutes to obtain a mixed monomer solution;

[0065] (2) Preparation of photoinitiator solution: take out 10-20% of the mixed monomer solution from step (1) for standby, add 50-70% of the photoinitiator to it, stir to dissolve, and obtain the photoinitiator solution;

[0066] (3) Preparation of prepolymer: add the remaining mixed monomer solution in step (1) to the reaction bottle, charge N2 for 10 minutes, then add 5-10% of the photoinitiator solution in step (2), and irradiate with ultraviolet light for 10-30 minutes. The solution viscosity at the bottom of the kettle increases significantly, and a seed solution is obtained;

[0067] (4) Add the remaining photoinitiator solution in step (2) to the seed solution in step (3) dropwise, and add dropwise while irradiating with ultraviolet light. The dropwise addition time is 0.5-1 hour. After the dropwise addition is completed, the temperature is raised to 130-150°C, and the stirring reaction is carried out for 1-2 hours. After the ultraviolet light irradiation is completed, the remaining photoinitiator is added and stirred for 30-45 minutes. The material is filtered out at 130-150°C, and the low surface energy polyacrylate pressure-sensitive adhesive for sticking is obtained after cooling.

[0068] The utility model provides a kind of preparation device of sticking low surface energy polyacrylate pressure sensitive adhesive, the outer surface of stirring reaction cylinder 1 is provided with heating ring 2, the inside of heating ring 2 is provided with electric heating rod, the inner side wall of stirring reaction cylinder 1 is equipped with mounting ring 3, recess is opened in the surface of mounting ring 3, the inside of recess is provided with adapter plug 4, the top surface of adapter plug 4 is trapezoidal, the upper surface of stirring reaction cylinder 1 is equipped with top ring 5, piston rod 6 is inserted in the inside of top ring 5, the outer surface of piston rod 6 is provided with limit telescopic frame 45, the lower end of top ring 5 is provided with first telescopic cylinder 7, the outer surface of first telescopic cylinder 7 is equipped with scraping assembly, the back of stirring reaction cylinder 1 is equipped with support assembly, the inner side wall of support assembly is equipped with drive assembly, the lower end of drive assembly is equipped with conveying assembly;Through the trapezoidal setting of the top surface of adapter plug 4, subsequent when adapter plug 4 moves downward, material is automatically flowed downward by the trapezoidal setting at this time, and it has automatic guiding effect, and when adapter plug 4 continues to drop in the recess inside mounting ring, material is guided and transported on the outer surface of adapter plug 4 at this time;

[0069] Scraping assembly includes scraping ring 8, and the scraping ring 8 is installed on the outer surface of the first telescopic cylinder 7, and the inner side wall of the scraping ring 8 is provided with an arc-shaped ring 9, and the lower surface of the scraping ring 8 is provided with a heating cylinder 10;

[0070] The support assembly includes a side frame 20, and the side frame 20 is installed on the back of the stirring reaction cylinder 1, and the inner side wall of the side frame 20 is provided with a support plate 21.

[0071] The driving assembly comprises a bidirectional motor 22 installed on the upper surface of the support plate 21, and the conveying assembly comprises a connecting plate 30 installed on the lower surface of the adapter plug 4, the lower end of the connecting plate 30 is sequentially provided with a first rack plate 31 and a second telescopic cylinder 32 from front to back, the lower end of the second telescopic cylinder 32 is provided with a mounting plate 36 installed on the inner wall of the stirring reaction cylinder 1, the front surface of the first rack plate 31 is engagedly connected with a gear rod 33, the upper surface of the gear rod 33 is engagedly connected with a second rack plate 34, the outer surface of the second rack plate 34 is provided with a limiting frame 35 installed on the inner wall of the stirring reaction cylinder 1, the gear rod 33 is inserted into the inside of the stirring reaction cylinder 1, the connecting plate 30, the first rack plate 31 and the gear rod 33 are all installed below the mounting ring 3, the front surface of the second rack plate 34 is provided with a guide discharging frame 37, the back surface of the guide discharging frame 37 is provided with an adapter hole 38 matched with the abutting rod 19, the inside of the guide discharging frame 37 is provided with a pressure sensor 39, the front end of the guide discharging frame 37 is provided with a discharging cylinder 40 matched with the guide discharging frame 37, the back surface of the discharging cylinder 40 is provided with a feeding groove 43 matched with the guide discharging frame 37, the inside of the discharging cylinder 40 is provided with an electric push rod 41, the lower end of the electric push rod 41 is provided with a piston cylinder 42, the inside of the discharging cylinder 40 is provided with an arc-shaped piece 44, the upper end of the arc-shaped piece 44 is provided with an iron ring magnetically attracted to the back surface of the piston cylinder 42, when the temperature inside the stirring reaction cylinder 1 is 130-150 degrees, the stirring reaction is carried out for 1-2 hours, the ultraviolet light irradiation is ended, the remaining photoinitiator is added and stirred for 30-45 minutes, then the discharging is carried out, at this time, the bidirectional motor 22 is reversely rotated, then the bidirectional motor 22 drives the ratchet column 46 and the first bevel gear column 26 to rotate, then the first bevel gear column 26, the second bevel gear column 27 and the bevel gear column screw rod 28 are engaged with each other, then the bevel gear column screw rod 28 rotates, then the movable frame 29 moves downward on the outer surface of the bevel gear column screw rod 28, when the movable frame 29 moves downward, the movable frame 29 drives the top ring 5 to move downward as a whole, then the top ring 5 also drives the scraping ring 8 to descend, and the materials are accumulated on the surface of the mounting ring 3, when the top ring 5 and the scraping ring 8 continuously descend, the pressure generated by the descending top ring 5 extrudes the materials, at the same time, the abutting rod 19 presses the adapter plug 4 in the mounting ring 3, then the materials start to be discharged through the groove in the mounting ring 3, when the adapter plug 4 descends, the adapter plug 4 drives the connecting plate 30 to descend, at this time, the connecting plate 30 drives the first rack plate 31 and the second telescopic cylinder 32 to descend at the same time, the design of the second telescopic cylinder 32 and the mounting plate 36 can ensure the stability of the connecting plate 30 when it descends, the first rack plate 31 contacts the second telescopic cylinder 32 when it descends, at this time, the second telescopic cylinder 32 starts to rotate clockwise, when the gear rod 33 rotates, it drives the second rack plate 34 to move towards the back surface,The displacement of the second rack plate 34 is limited by the limiting frame 35, and then the second rack plate 34 moves backward to drive the guide discharge frame 37 to move backward. At this time, the adaptive plug 4 and the abutting rod 19 are just descending, and then the adaptive hole 38 is matched with the abutting rod 19. At this time, the guide discharge frame 37 moves to the lower side of the groove in the mounting ring 3. At this time, the material directly falls on the surface of the guide discharge frame 37, and then the material is guided by the guide discharge frame 37. Subsequently, the material enters the inside of the discharge cylinder 40. When the abutting rod 19 is installed in the adaptive hole 38, the pressure sensor 39 senses the pressure at this time. Then, when the pressure sensor 39 senses the pressure, the electric push rod 41 drives the piston cylinder 42 to descend. The downward movement of the piston cylinder 42 makes the gas in the discharge cylinder 40 move downward, so that the material in the discharge cylinder 40 is discharged at a faster speed. At the same time, the piston cylinder 42 can cyclically reciprocate upward and downward. The piston cylinder 42 and the arc-shaped piece 44 in the discharge cylinder 40 are magnetically attracted, so as to drive the arc-shaped piece 44 to descend at the same time. When the arc-shaped piece 44 descends, the feeding groove 43 is reduced at this time. The purpose is to quickly transport the material in the discharge cylinder 40. Similarly, when the arc-shaped piece 44 rises, the material on the surface of the guide discharge frame 37 enters the inside of the discharge cylinder 40 at a faster speed. Then, the piston cylinder 42 and the arc-shaped piece 44 cyclically move upward and downward, so that the speed of the material entering the inside of the discharge cylinder 40 is slow when the material is discharged under pressure. When the material is normally discharged, the feeding groove 43 is in the largest state, so that the speed of the material entering the inside of the discharge cylinder 40 is fast. The overall discharging effect is good.

[0072] The inner wall of the scraping ring 8 is provided with a supporting block 11, the upper surface of the supporting block 11 is provided with a mounting box 12, the inner top surface of the mounting box 12 is provided with a first motor 13, the output end of the first motor 13 is provided with a first gear 14, the outer surface of the first gear 14 is engagedly connected with a second gear 15, the lower surfaces of the second gear 15 and the first gear 14 are both provided with a stirring shaft 16, the lower end of the stirring shaft 16 is provided with a mounting column 17, the bottom end of the mounting column 17 is internally provided with a mounting bearing 18, the inner side wall of the mounting bearing 18 is provided with a contact lever 19, the front surface of the bidirectional motor 22 is provided with a rotating disc 23 which penetrates through the front end surface of the side frame 20, the outer surface of the rotating disc 23 is provided with a convex column 24, the outer surface of the convex column 24 is provided with a reciprocating frame 25, the lower surface of the reciprocating frame 25 is in contact with the upper surface of the piston rod 6, the back surface of the bidirectional motor 22 is provided with a ratchet column 46, the back surface of the ratchet column 46 is provided with a first bevel gear column 26, the right side surface of the first bevel gear column 26 is engagedly connected with a second bevel gear column 27, the right side surface of the second bevel gear column 27 is engagedly connected with a bevel gear column lead screw 28, the outer surface of the bevel gear column lead screw 28 is movably provided with a movable frame 29, the outer surface of the movable frame 29 is provided with a guide rod, the lower surface of the movable frame 29 is in contact with the surface of the top ring 5, and the movable frame 29 and the top ring 5 are connected through bolts, the outer surface of the second bevel gear column 27 is provided with a positioning ring, the positioning ring is mounted on the inner wall of the side frame 20, the back surface of the reciprocating frame 25 is provided with a sliding block, and the sliding block is slidingly mounted on the front surface of the supporting plate 21.5~1 hour, after the end of the drop, at this time by bidirectional motor 22 can drive the rotating disc 23 rotation, then when the rotating disc 23 rotates will drive the convex column 24 rotation, at this time the reciprocating frame 25 will reciprocating movement, when the reciprocating frame 25 moves will touch the upper surface of the piston rod 6, when the piston rod 6 downward movement, at this time the piston rod 6 will drive the installation box 12 and the scraping ring 8 downward movement as a whole, and the top ring 5 and the scraping ring 8 between the first telescopic cylinder 7 is connected, so that the scraping ring 8 can be normal downward movement, when the scraping ring 8 downward movement, at this time the scraping ring 8 will move downward in the inner wall of the stirring reaction cylinder 1, so as to scrape some material in the inner wall of the stirring reaction cylinder 1 downward, to avoid the material attached to the inside of the stirring reaction cylinder 1, at the same time through the design of the arc ring 9 can avoid the material flow to the inner wall of the scraping ring 8, and the heating cylinder 10 can also be heated to the material in the stirring reaction cylinder 1, and through the heating ring 2 on the surface of the stirring reaction cylinder 1 can also complete the heating operation, when the scraping ring 8 down, at this time the heating ring 2 by heat transfer to the outer surface of the stirring reaction cylinder 1, at the same time, when the scraping ring 8 down to the same height between the stirring reaction cylinder 1, at this time the scraping ring 8 can be heat transfer to the material in the stirring reaction cylinder 1, so that the material can be quickly heated, at the same time start the first motor 13 in the installation box 12, so as to drive the first gear 14 and the second gear 15 rotation, then through two groups of stirring shaft 16 to the material in the stirring reaction cylinder 1 at the same time complete the heating stirring operation, the whole material stirring heating effect is good, therefore the design can be through the up and down movement of the scraping ring 8 repeatedly scraping the material in the inner wall of the stirring reaction cylinder 1, at the same time the scraping ring 8 can also be heat transfered between the heating ring 2, so that the heat emitted by the heating ring 2 through the scraping ring 8 into the inside of the stirring reaction cylinder 1, and through the stirring of the stirring shaft 16 makes the material in the stirring reaction cylinder 1 repeatedly stirred up and down, and heating, stirring and scraping operation can be carried out at the same time.

[0073] Example 1

[0074] (1) Preparation of mixed monomer solution: 190 parts of butyl acrylate, 37.5 parts of N-vinylimidazole, 8 parts of diethylbenzene, and 0.4 parts of n-dodecanethiol were weighed into a stirring bottle as mixed monomers, and stirred at a speed of 300 rpm for 30 minutes to obtain a mixed monomer solution.

[0075] (2) Preparation of initiator solution: 15% of the mixed monomer in step (1) was taken out for standby, 0.3 parts of 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide (TPO) was weighed and added, and stirred to dissolve, to obtain an initiator solution.

[0076] (3), Preparation of the prepolymer: the remaining mixed monomers in step (1) were added to the reaction bottle, filled with N2 for 10 minutes, then 5% of the photoinitiator solution in step (2) was added, and the solution was irradiated with a UV lamp for 15 minutes. The viscosity of the solution at the bottom of the kettle increased significantly, and the seed solution was obtained;

[0077] (4), the remaining photoinitiator solution in step (2) was added to the seed solution in step (3) respectively, and the UV irradiation was carried out while the solution was added. The addition time was 1 hour. After the addition was completed, the temperature was raised to 140℃, and the stirring reaction was carried out for 2 hours. After the UV irradiation was completed, 0.3 parts of 2, 4, 6 (trimethyl benzoyl) diphenyl phosphine oxide (TPO) was added and stirred for 45 minutes. The material was filtered out at 140℃, and the low surface energy polyacrylate pressure sensitive adhesive was obtained after cooling;

[0078] Example 2

[0079] 1), Preparation of mixed monomer solution: 200 parts of ethyl acrylate, 37.5 parts of dodecyl vinyl ether, 5 parts of pentaerythritol triallyl ether, 10 parts of glycidyl methacrylate, and 0.5 parts of tetrabromomethane were weighed as mixed monomers and put into a stirring bottle. The stirring speed was 300 revolutions per minute, and the stirring was carried out for 30 minutes to make the mixed monomers fully mixed to obtain the mixed monomer solution;

[0080] (2), Preparation of initiator solution: 15% of the mixed monomers in step (1) were taken out for standby, 1.2 parts of benzoin dimethyl ether (BDK) was weighed and added, and the stirring was carried out to make it dissolve to obtain the initiator solution;

[0081] (3), Preparation of the prepolymer: the remaining mixed monomers in step (1) were added to the reaction bottle, filled with N2 for 10 minutes, then 5% of the photoinitiator solution in step (2) was added, and the solution was irradiated with a UV lamp for 15 minutes. The viscosity of the solution at the bottom of the kettle increased significantly, and the seed solution was obtained;

[0082] (4), the remaining photoinitiator solution in step (2) was added to the seed solution in step (3) respectively, and the UV irradiation was carried out while the solution was added. The addition time was 1 hour. After the addition was completed, the temperature was raised to 140℃, and the stirring reaction was carried out for 2 hours. After the UV irradiation was completed, 0.3 parts of 2, 4, 6 (trimethyl benzoyl) diphenyl phosphine oxide (TPO) was added and stirred for 45 minutes. The material was filtered out at 140℃, and the low surface energy polyacrylate pressure sensitive adhesive was obtained after cooling;

[0083] Example 3

[0084] (1) Preparation of mixed monomer solution: 225 parts of heptadecyl acrylate, 12.5 parts of N-vinyl pyrrolidone, 10 parts of cyclohexane dimethanol divinyl ether, and 1 part of tert-dodecanethiol were weighed into a stirring bottle as mixed monomers, stirred at a speed of 600 rpm for 40 minutes to obtain a mixed monomer solution;

[0085] (2) Preparation of initiator solution: 20% of the mixed monomers in step (1) were taken out for standby, 0.9 parts of 4-chlorobenzophenone (CBP) was weighed and added, and stirred to dissolve, to obtain an initiator solution;

[0086] (3) Preparation of prepolymer: the remaining mixed monomers in step (1) were added to a reaction bottle, N2 was filled for 10 minutes, 7% of the photoinitiator solution in step (2) was added, and the solution was irradiated with a UV lamp for 15 minutes, and the viscosity of the solution at the bottom of the kettle was obviously increased, to obtain a seed solution;

[0087] (4) The remaining photoinitiator solution in step (2) was added dropwise into the seed solution in step (3), and the UV irradiation was carried out while the dropwise addition was carried out, the dropwise addition time was 0.5 hours, after the dropwise addition was completed, the temperature was increased to 135°C, and the stirring reaction was carried out for 1.5 hours, the UV irradiation was completed, 0.6 parts of 4-chlorobenzophenone (CBP) was added and stirred for 40 minutes, the material was filtered out at 135°C, and cooled to obtain a low surface energy polyacrylate pressure-sensitive adhesive;

[0088] Example 4

[0089] (1) Preparation of mixed monomer solution: 212.5 parts of isodecyl acrylate, 25 parts of vinyl benzoate, 9.5 parts of triallyl cyanurate, and 0.5 parts of n-dodecanethiol were weighed into a stirring bottle as mixed monomers, stirred at a speed of 600 rpm for 40 minutes to obtain a mixed monomer solution;

[0090] (2) Preparation of initiator solution: 10% of the mixed monomers in step (1) were taken out for standby, 1.75 parts of hydroxy-2-methyl-1-phenyl-1-propanone (1173) was weighed and added, and stirred to dissolve, to obtain an initiator solution;

[0091] (3) Preparation of prepolymer: the remaining mixed monomers in step (1) were added to a reaction bottle, N2 was filled for 10 minutes, 5% of the photoinitiator solution in step (2) was added, and the solution was irradiated with a UV lamp for 20 minutes, and the viscosity of the solution at the bottom of the kettle was obviously increased, to obtain a seed solution;

[0092] (4), the remaining photoinitiator solution in step (2) is added dropwise into the seed solution in step (3), and the dropping is carried out while ultraviolet light is irradiated, the dropping time is 1 hour, after the dropping is completed, the temperature is raised to 145 DEG C, and stirring reaction is carried out for 2 hours, after the ultraviolet light irradiation is completed, 0.75 parts of 4-chlorobenzophenone (CBP) is added, and stirring is carried out for 40 minutes, the material is filtered out at 145 DEG C, and low surface energy polyacrylate pressure-sensitive adhesive is obtained after cooling;

[0093] Example 5

[0094] (1), the preparation of the mixed monomer solution: 20 parts of octadecyl acrylate, 187.5 parts of isooctyl acrylate, 20 parts of isopropyl vinyl ether, 20 parts of pentaerythritol triallyl ether, 1.25 parts of tert-dodecanethiol are put into a stirring bottle as mixed monomers, the stirring speed is 400 revolutions per minute, and stirring is carried out for 30 minutes, so that the mixed monomers are fully mixed to obtain a mixed monomer solution;

[0095] (2), the preparation of the initiator solution: 10% of the mixed monomers in step (1) are taken out for standby, 0.75 parts of hydroxy-2-methyl-1-phenyl-1-propanone (1173) is added, stirring is carried out until it is dissolved, and an initiator solution is obtained;

[0096] (3), the preparation of the prepolymer: the remaining mixed monomers in step (1) are added to a reaction bottle, N2 is filled for 10 minutes, 7% of the photoinitiator solution in step (2) is added, ultraviolet light irradiation is carried out for 20 minutes, and the solution viscosity at the bottom of the kettle is obviously increased, so that a seed solution is obtained;

[0097] (4), the remaining photoinitiator solution in step (2) is added dropwise into the seed solution in step (3), and the dropping is carried out while ultraviolet light is irradiated, the dropping time is 1 hour, after the dropping is completed, the temperature is raised to 140 DEG C, and stirring reaction is carried out for 2 hours, after the ultraviolet light irradiation is completed, 0.5 parts of diphenyl phosphine oxide (TPO) is added, and stirring is carried out for 40 minutes, the material is filtered out at 140 DEG C, and low surface energy polyacrylate pressure-sensitive adhesive is obtained after cooling;

[0098] Example 6

[0099] (1), the preparation of the mixed monomer solution: 215 parts of octadecyl acrylate, 10 parts of butyl acrylate, 15 parts of N-vinyl oxazolidone, 7.5 parts of ethylene glycol monoallyl ether, and 0.5 parts of tetrabromomethane are put into a stirring bottle as mixed monomers, the stirring speed is 400 revolutions per minute, and stirring is carried out for 30 minutes, so that the mixed monomers are fully mixed to obtain a mixed monomer solution;

[0100] (2) Preparation of initiator solution: 15% of the mixed monomers in step (1) is taken out for standby, 1.4 parts of diphenyl phosphine oxide (TPO) is weighed and added, and stirring is performed to dissolve it, thereby obtaining an initiator solution;

[0101] (3) Preparation of prepolymer: the remaining mixed monomers in step (1) are added to a reaction bottle, N2 is filled for 10 minutes, 10% of the photoinitiator solution in step (2) is added, and ultraviolet light is irradiated for 15 minutes, and the solution viscosity at the bottom of the kettle is obviously increased, thereby obtaining a seed solution;

[0102] (4) The remaining photoinitiator solution in step (2) is added dropwise into the seed solution in step (3), and ultraviolet light is irradiated while dropwise adding, the dropwise adding time is 1 hour, after the dropwise adding is completed, the temperature is increased to 140 DEG C, and stirring is performed for 2 hours, the ultraviolet light irradiation is completed, 0.6 parts of diphenyl phosphine oxide (TPO) is added and stirred for 40 minutes, the material is filtered out at 140 DEG C, and cooling is performed, thereby obtaining a low-surface-energy polyacrylate pressure-sensitive adhesive for sticking;

[0103] Viscosity of glue solution: the glue solution is heated to 150 DEG C, and the viscosity of the glue solution is tested;

[0104] Peeling force: the hot melt adhesive is dissolved with ethyl acetate to adjust the solid content to 50%, coated on 25 mu m PET, the glue thickness is 25 mu m, pasted on a PE plate, and a tensile testing machine is used for testing;

[0105] Loop tack: the hot melt adhesive is dissolved with ethyl acetate to adjust the solid content to 50%, coated on 25 mu m PET, the glue thickness is 25 mu m, and a tensile testing machine is used for testing;

[0106] Hold tack: the hot melt adhesive is dissolved with ethyl acetate to adjust the solid content to 50%, coated on 25 mu m PET, the glue thickness is 25 mu m, and a 1Kg weight is hung at room temperature for testing.

[0107] From the test results, the low-surface-energy polyacrylate pressure-sensitive adhesive for sticking prepared by the segmented UV light curing bulk polymerization process in the embodiment has lower viscosity, higher peeling force, loop tack, and longer hold tack compared with the sample. The detailed method of the present application is illustrated by the above embodiment, but the present application is not limited to the above detailed method, that is, it does not mean that the present application must rely on the above detailed method to be implemented. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application

[0108] Working principle: when the staff uses the device, first connect the power supply of the device, thus providing power support for the device, first add the remaining light initiator solution in step two to the seed solution in step three, add while irradiating with ultraviolet light, drop for 0.5-1 hours, after the drop is completed, at this time the bidirectional motor 22 can drive the rotating disc 23 to rotate, then when the rotating disc 23 rotates, the convex column 24 will rotate, at this time the reciprocating frame 25 will reciprocate up and down, when the reciprocating frame 25 moves, it will touch the upper surface of the piston rod 6, when the piston rod 6 moves downward, the piston rod 6 will drive the installation box 12 and the scraping ring 8 to move downward as a whole, and the top ring 5 and the scraping ring 8 are connected by the first telescopic cylinder 7, so that the scraping ring 8 can move downward normally, when the scraping ring 8 moves downward, the scraping ring 8 will move downward on the inner wall of the stirring reaction cylinder 1, so as to scrape some materials on the inner wall of the stirring reaction cylinder 1 downward, at the same time, the design of the arc-shaped ring 9 can avoid the flow of materials to the inner wall of the scraping ring 8, and the heating cylinder 10 can also heat the materials in the stirring reaction cylinder 1, and the heating ring 2 on the outer surface of the stirring reaction cylinder 1 can also complete the heating operation, when the scraping ring 8 descends, at this time the heating ring 2 transmits heat to the outer surface of the stirring reaction cylinder 1, at the same time, when the scraping ring 8 descends to the same height as the stirring reaction cylinder 1, the scraping ring 8 can transmit heat to the materials in the stirring reaction cylinder 1, at the same time, start the first motor 13 in the installation box 12, so as to drive the first gear 14 and the second gear 15 to rotate, then complete the temperature rising and stirring operation of the materials in the stirring reaction cylinder 1 by the two groups of stirring shafts 16;

[0109] When the internal temperature of the stirring reaction cylinder 1 is 130-150 DEG C, the reaction is stirred for 1-2 hours, the remaining photoinitiator is added and stirred for 30-45 minutes, and then the material is discharged. At this time, the bidirectional motor 22 is rotated in the reverse direction, and then the ratchet column 46 and the first bevel gear column 26 are rotated. Then the first bevel gear column 26, the second bevel gear column 27 and the bevel gear column screw rod 28 are meshed with each other, and then the bevel gear column screw rod 28 is rotated. Then the movable frame 29 moves downward on the outer surface of the bevel gear column screw rod 28. When the movable frame 29 moves downward, the movable frame 29 drives the top ring 5 to move downward as a whole, and then the top ring 5 also drives the scraping ring 8 to descend. The material is accumulated on the surface of the mounting ring 3. When the top ring 5 and the scraping ring 8 continue to descend, the pressure generated by the descent of the top ring 5 can extrude the material, and at the same time the abutting rod 19 can press the adapter plug 4 in the mounting ring 3. Then the material can be discharged through the groove in the mounting ring 3. When the adapter plug 4 descends, the adapter plug 4 drives the connecting plate 30 to descend, and at this time the connecting plate 30 drives the first rack plate 31 and the second telescopic cylinder 32 to descend at the same time. The design of the second telescopic cylinder 32 and the mounting plate 36 can ensure the stability of the connecting plate 30 when it descends. The first rack plate 31 descends and contacts the second telescopic cylinder 32. At this time, the second telescopic cylinder 32 starts to rotate clockwise. When the gear rod 33 rotates, it drives the second rack plate 34 to move backward. The second rack plate 34 is limited in displacement by the limiting frame 35, and then moves backward and drives the guide discharge frame 37 to move backward. At this time, the adapter plug 4 and the abutting rod 19 are descending. Then the adapter hole 38 is adapted with the abutting rod 19. At this time, the guide discharge frame 37 moves to the lower side of the groove in the mounting ring 3. At this time, the material directly falls on the surface of the guide discharge frame 37. Then the guide discharge frame 37 guides the material, and then the material enters the inside of the discharge cylinder 40. When the abutting rod 19 is installed in the adapter hole 38, the pressure sensor 39 can sense the pressure. Then, when the pressure sensor 39 senses the pressure, the electric push rod 41 drives the piston cylinder 42 to descend. The descent of the piston cylinder 42 makes the gas in the discharge cylinder 40 move downward, so that the material in the discharge cylinder 40 is discharged quickly. The piston cylinder 42 and the arc-shaped piece 44 in the discharge cylinder 40 are magnetically attracted, so that the arc-shaped piece 44 is also driven to descend. When the arc-shaped piece 44 descends, the feeding groove 43 is reduced, which is used to quickly transport the material in the discharge cylinder 40. The above is all the working principles of the present application.

[0110] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form; any person skilled in the art can easily implement the present application according to the drawings and the above description; however, any person skilled in the art can make some changes, modifications and equivalent changes of the above disclosed technical contents without departing from the technical solution of the present application, and the equivalent embodiments of the present application are still within the protection scope of the present application.

Claims

1. A low surface energy polyacrylate pressure sensitive adhesive for bonding, characterized in that: By mass percentage, comprising: Soft monomer 75-90% Functional monomer 5-20% Crosslinking monomer 3-8% Chain transfer agent 0.1-0.5% Photoinitiator 0.3-1.0% The soft monomer is one or more of butyl acrylate, isooctyl acrylate, octadecyl acrylate, tetradecyl acrylate, heptadecyl acrylate, hexadecyl acrylate, isodecyl acrylate, ethyl acrylate and isobutyl acrylate; The functional monomer is one or more of vinyl carbazole, N-vinylimidazole, N-vinyl oxazolidone, dodecyl vinyl ether, octadecyl vinyl ether, benzoic acid vinyl ether, N-vinyl pyrrolidone, isopropyl vinyl ether; The crosslinking monomer is one or more of glycidyl methacrylate, divinyl benzene, acrylamide, N, N-methylene bisacrylamide, triallyl cyanurate, pentaerythritol triallyl ether, cyclohexane dimethanol divinyl ether, trimethylolpropane triacrylate, trimethylolpropane diacryl ether, triallyl cyanurate, ethylene glycol monoallyl ether and N-methoxy methyl acrylamide; The chain transfer agent is one or more of n-dodecanethiol, tertiary dodecanethiol, tetrabromomethane; The photosensitizer is one or more of 2, 4, 6 (trimethyl benzoyl) diphenyl phosphine oxide (TPO), 2-hydroxy-2-methyl-1-phenyl-1-propanone (1173), benzoin dimethyl ether (BDK), 4-chlorobenzophenone (CBP); The preparation of the polyacrylate pressure sensitive adhesive comprises the following steps: (1) Preparation of mixed monomer solution: mix all the soft monomers, crosslinking monomers, functional monomers and chain transfer agents, stir at a speed of 300-800 revolutions per minute for 15-45 minutes to obtain a mixed monomer solution; (2) Preparation of photoinitiator solution: take out 10-20% of the mixed monomer solution from step (1) and add 50-70% of the photoinitiator to it, stir to dissolve, and obtain a photoinitiator solution; (3) Preparation of prepolymer: add the remaining mixed monomer solution in step (1) to a reaction bottle, charge N2 for 10 minutes, then add 5-10% of the photoinitiator solution in step (2), and irradiate with a UV lamp for 10-30 minutes. The solution at the bottom of the kettle becomes significantly thicker, and a seed solution is obtained; (4) Add the remaining photoinitiator solution in step (2) to the seed solution in step (3) dropwise, and irradiate with a UV lamp while dropping. The dropping time is 0.5-1 hour. After the dropping is completed, the temperature is raised to 130-150°C, and the stirring reaction is carried out for 1-2 hours. After the UV irradiation is completed, the remaining photoinitiator is added and stirred for 30-45 minutes. The material is filtered out at 130-150°C, and cooled to obtain a low surface energy polyacrylate pressure sensitive adhesive.

2. A device for preparing a low surface energy polyacrylate pressure sensitive adhesive, comprising a stirring reaction cylinder, characterized in that: The outer surface of the stirring reaction cylinder is provided with a heating ring, the inside of the heating ring is provided with an electric heating rod, the inner side wall of the stirring reaction cylinder is installed with a mounting ring, the surface of the mounting ring is provided with a groove, the inside of the groove is provided with an adapter plug, the top surface of the adapter plug is trapezoidal, the upper surface of the stirring reaction cylinder is installed with a top ring, the inside of the top ring is inserted and installed with a piston rod, the outer surface of the piston rod is provided with a limiting telescopic frame, the lower end of the top ring is provided with a first telescopic cylinder, the outer surface of the first telescopic cylinder is installed with a scraping assembly, the back surface of the stirring reaction cylinder is installed with a supporting assembly, the inner side wall of the supporting assembly is installed with a driving assembly, the lower end of the driving assembly is installed with a conveying assembly, The scraping assembly comprises a scraping ring, which is installed on the outer surface of the first telescopic cylinder, the inner side wall of the scraping ring is provided with an arc-shaped ring, and the lower surface of the scraping ring is provided with a heating cylinder; The supporting assembly comprises a side frame, which is installed on the back surface of the stirring reaction cylinder, and the inner side wall of the side frame is installed with a supporting plate; The driving assembly comprises a bidirectional motor, which is installed on the upper surface of the supporting plate.

3. The device for preparing a low surface energy polyacrylate pressure-sensitive adhesive according to claim 2, characterized in that: A supporting block is installed on the inner wall of the scraping ring, a mounting box is installed on the upper surface of the supporting block, a first motor is installed on the inside top surface of the mounting box, a first gear is installed on the output end of the first motor, a second gear is meshed and connected with the outer surface of the first gear, a stirring shaft is installed on the lower surfaces of the second gear and the first gear, a mounting column is provided at the lower end of the stirring shaft, a mounting bearing is installed at the bottom end inside of the mounting column, a resisting rod is installed on the inner side wall of the mounting bearing, a rotating disc is installed through the front end surface of the side frame from the front surface of the bidirectional motor, a convex column is installed on the outer surface of the rotating disc, a reciprocating frame is installed on the outer surface of the convex column, and the upper surface of the reciprocating frame abuts against the upper surface of the piston rod.

4. The device for preparing a low surface energy polyacrylate pressure-sensitive adhesive according to claim 2, characterized in that: A ratchet column is installed on the back surface of the bidirectional motor, a first bevel gear column is installed on the back surface of the ratchet column, a second bevel gear column is meshed and connected with the right side surface of the first bevel gear column, a bevel gear column screw rod is meshed and connected with the right side surface of the second bevel gear column, a movable frame is movably installed on the outer surface of the bevel gear column screw rod, a guide rod is arranged on the outer surface of the movable frame, the lower surface of the movable frame abuts against the surface of the top ring, and the movable frame and the top ring are connected through bolts.

5. The device for preparing a low surface energy polyacrylate pressure-sensitive adhesive according to claim 2, characterized in that: The conveying assembly comprises a connecting plate, which is installed on the lower surface of the adapter plug, a first rack plate and a second telescopic cylinder are sequentially installed on the lower end of the connecting plate from front to back, a mounting plate is provided at the lower end of the second telescopic cylinder, and the mounting plate is installed on the inner wall of the stirring reaction cylinder.

6. The apparatus for preparing a low surface energy polyacrylate pressure-sensitive adhesive according to claim 5, characterized in that: A gear rod is meshed and connected with the front surface of the first rack plate, a second rack plate is meshed and connected with the upper surface of the gear rod, a limiting frame is arranged on the outer surface of the second rack plate, the limiting frame is installed on the inner wall of the stirring reaction cylinder, the gear rod is inserted into the inside of the stirring reaction cylinder, and the connecting plate, the first rack plate and the gear rod are all installed below the mounting ring.

7. The apparatus for preparing a low surface energy polyacrylate pressure sensitive adhesive according to claim 6, characterized in that: The front surface of the second rack plate is provided with a guide discharge rack, the back surface of the guide discharge rack is provided with an adaptive hole, the adaptive hole and the resisting rod are mutually adapted, and the inside of the guide discharge rack is provided with a pressure sensor.

8. The device for preparing a low surface energy polyacrylate pressure-sensitive adhesive according to claim 7, characterized in that: The front end of the guide discharge rack is provided with a discharge cylinder, and the discharge cylinder and the guide discharge rack are mutually adapted.

9. The apparatus for preparing a low surface energy polyacrylate pressure sensitive adhesive according to claim 8, characterized in that: The back surface of the discharge cylinder is provided with a feeding groove, the feeding groove and the guide discharge rack are mutually adapted, the inside top surface of the discharge cylinder is provided with an electric push rod, and the lower end of the electric push rod is provided with a piston cylinder.

10. The apparatus for preparing a low surface energy polyacrylate pressure sensitive adhesive according to claim 9, wherein: The inside of the discharge cylinder is provided with an arc-shaped sheet, the upper end of the arc-shaped sheet is provided with an iron ring, and the iron ring and the back surface of the piston cylinder are mutually magnetically attracted.

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