Photocuring adhesive reaction kettle

Abstract

The utility model discloses a photocuring adhesive reaction kettle which is characterized in that materials in the kettle are quickly and efficiently mixed in the radial direction and the longitudinal direction by combining a paddle type stirrer and a multi-layer frame type stirrer which are arranged in the kettle body, and the frame type stirrer can scrape and clean residual materials on the inner wall of the kettle in time; a plurality of light source panels are arranged at the top, the side face and the bottom of the kettle body, one or more light source panels can be flexibly selected, light sources can make contact with reaction materials in a closer distance, polymerization of monomers in the kettle is initiated, and the initiation efficiency is improved; the temperature in the kettle can be accurately controlled by introducing a medium through the stirring shaft; compared with the prior art, the problems that a conventional light source is only arranged at the top of the kettle body, the irradiation distance of the light source is long, the initiation effect is not obvious and the reaction time is long are solved, and a medium is introduced through the stirring shaft to take away polymerization reaction heat in time; the frame-type stirring is combined with a liquid guide device at the upper part of the kettle body to realize online cleaning of the kettle wall.

Description

Technical Field

[0001] This utility model relates to the field of adhesive and coating production technology, and in particular to a photocurable adhesive reaction vessel. Background Technology

[0002] The ultraviolet (UV) curing process involves the polymerization of unsaturated functional groups initiated by photosensitizers using UV light energy. No solvent evaporation or toxic gas generation occurs during curing, making it an environmentally friendly and typical green technology. UV curing only requires UV or visible light irradiation to initiate polymerization and complete curing, eliminating the need for additional treatments such as heating, thus saving significant energy. UV curing equipment is small in scale, saves space, and offers fast processing speeds, making it suitable for continuous production. Currently, UV curing technology is widely used in coatings, inks, adhesives, information technology, and biotechnology.

[0003] With the continuous expansion of industrial applications and the rapid development of adhesive materials, the requirements for the photocurability, adhesion, adhesion durability, and cured product properties of adhesives are also changing. This has led to evolving requirements for photocurable adhesive reactors, encompassing economy, efficiency, ecology, energy efficiency, and versatility. Photocurable adhesives are composed of photosensitive resins, crosslinking agents, diluents, photosensitizers, and modifiers. They achieve bonding by undergoing a curing reaction under ultraviolet or visible light irradiation.

[0004] The main component of UV-curable adhesives is photosensitive resin, which is produced by polymerizing monomers containing unsaturated functional groups into corresponding oligomers—photosensitive resins—in a reactor under ultraviolet / visible light irradiation. The stability of photosensitive resins often restricts the final performance of adhesives.

[0005] Currently, the structure of commonly used photocurable adhesive reaction vessels is relatively simple. The polymerization vessel and the mixing vessel are often set up separately, resulting in a long process flow and complex equipment. Since the polymerization reaction is exothermic, jackets or coils are often set on the outside of the vessel to remove heat, resulting in a relatively single light source point on the polymerization vessel. At the same time, the use of coils inside the vessel to remove heat can easily leave adhesive residue between the vessel wall and the coils, resulting in poor batch stability of the product and difficulty in cleaning.

[0006] Therefore, we propose a photocurable adhesive reactor to solve the above problems. Summary of the Invention

[0007] This invention overcomes the shortcomings of the prior art and provides a photocurable adhesive reaction vessel.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a photocurable adhesive reaction vessel, comprising: a vessel body, a stirring device disposed inside the vessel body, a light source device disposed outside the vessel body, and a liquid guiding device disposed on the upper end of the inner side wall of the vessel body; a nitrogen inlet is provided at the top of the vessel body, and a vent is provided at the top of the vessel body; a first feed inlet, a second feed inlet, and a third feed inlet are provided at the top of the vessel body; a first discharge outlet and a second discharge outlet are provided at the bottom of the vessel body.

[0009] The stirring device includes a stirring shaft rotatably connected to the vessel body, a paddle stirrer mounted on the stirring shaft, and a multi-layer frame stirrer; the stirring shaft has a medium inlet at the bottom and a medium outlet at the top.

[0010] The light source device includes a first light source panel and a second light source panel disposed on the top of the vessel body; a third light source panel and a fourth light source panel disposed on the bottom of the vessel body; and a fifth light source panel and a sixth light source panel disposed on the side of the vessel body.

[0011] In a preferred embodiment of this utility model, a speed reducer is provided at the top of the stirring shaft, and a motor is provided above the speed reducer.

[0012] In a preferred embodiment of this invention, the multi-layer frame stirrer is provided with a hollow cavity, which is used for the flow of media.

[0013] In a preferred embodiment of this utility model, the distance between the edge of the multi-layer frame stirrer and the inner wall of the vessel is 0.5cm-1cm.

[0014] In a preferred embodiment of the present invention, the liquid guiding device is connected to the third feed inlet, and the surface of the liquid guiding device 22 is uniformly provided with 10-50 liquid guiding holes.

[0015] In a preferred embodiment of this invention, the liquid guiding device is a circular tube.

[0016] In a preferred embodiment of this utility model, the liquid guiding hole is disposed facing the inner wall of the vessel, and the liquid guiding hole is 1cm-2cm away from the inner wall of the vessel.

[0017] In a preferred embodiment of this utility model, a baffle is provided below the liquid guiding hole, the baffle is at an angle of 30°-60° with the inner wall of the vessel, and the outer edge of the baffle is 0.1cm-0.5cm away from the inner wall of the vessel.

[0018] In a preferred embodiment of this utility model, the first light source panel, the second light source panel, the third light source panel, the fourth light source panel, the fifth light source panel, and the sixth light source panel are made of transparent glass, and the light transmittance of the transparent glass is ≥95%; the thickness of the first light source panel, the second light source panel, the third light source panel, the fourth light source panel, the fifth light source panel, and the sixth light source panel is ≤ the thickness of the vessel wall.

[0019] In a preferred embodiment of this utility model, the vessel body 1 is made of one of stainless steel 304, stainless steel 316, stainless steel 316L, or titanium alloy.

[0020] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0021] (1) By setting multiple light source panels on the top, side and bottom of the reactor, it is possible to flexibly select one or more light source panels, which makes it easy to adjust the total light energy required during the polymerization process. Moreover, the light source can come into contact with the reactants at a closer distance, which improves the initiation efficiency of the monomer in the reactor. Compared with the existing technology, it avoids the problems of conventional light sources being set only on the top of the reactor, long light source irradiation distance, insignificant initiation effect and long reaction time.

[0022] (2) By combining the paddle agitator and the multi-layer frame agitator set in the reactor, the frame agitator can scrape and clean the residual material on the inner wall of the reactor in time, so as to achieve rapid and efficient mixing of the material in the reactor in the radial and longitudinal directions; by setting the liquid guiding device in the upper part of the reactor, the reactor wall can be cleaned online in the form of adding monomers or solvents in conjunction with the frame agitator during the polymerization reaction, thereby improving the transmittance of the light irradiation panel. After the polymerization reaction is completed, the reactor does not need to be opened for cleaning, which meets the requirements of continuous production process.

[0023] (3) By introducing the cooling medium through the stirring shaft and frame stirring, the heat of polymerization reaction can be removed in time, which is conducive to precise control of the reaction temperature in the reactor. In the blending stage after polymerization, the heating medium can be introduced through the stirring shaft and frame stirring to provide heating and heat preservation for the reactor. Using this method, the heat transfer distance is shorter and the heat transfer effect is better than setting a jacket on the outer wall of the reactor. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0025] Figure 1 This is a cross-sectional structural diagram of a preferred embodiment of the present invention;

[0026] Figure 2 This is a partial cross-sectional view of a preferred embodiment of the present invention;

[0027] Figure 3 This is a perspective structural diagram of a preferred embodiment of the present invention;

[0028] Figure 4 This is a partial three-dimensional structural diagram of the liquid guiding device of this utility model;

[0029] In the diagram: 1. Kettle body; 2. Stirring device; 3. Paddle agitator; 4. Frame agitator; 6. Nitrogen inlet; 7. First feed inlet; 8. Second feed inlet; 9. Third feed inlet; 10. First discharge outlet; 11. Second discharge outlet; 12. Medium inlet; 13. Medium outlet; 14. First light source panel; 15. Second light source panel; 16. Third light source panel; 17. Fourth light source panel; 18. Fifth light source panel; 19. Sixth light source panel; 20. Motor; 21. Reducer; 22. Liquid guiding device; 23. Liquid guiding hole; 24. Stirring shaft; 25. Vent. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0031] like Figure 1 As shown, a photocurable adhesive reaction vessel includes:

[0032] The vessel body 1 includes a stirring device 2 located inside the vessel body, a light source device located outside the vessel body, and a liquid guiding device 22 located on the upper end of the inner wall of the vessel body 1. A nitrogen inlet 6 and a vent 25 are located at the top of the vessel body 1. A first feed inlet 7, a second feed inlet 8, and a third feed inlet 9 are located at the top of the vessel body 1. A first discharge outlet 10 and a second discharge outlet 11 are located at the bottom of the vessel body 1.

[0033] The stirring device 2 includes a stirring shaft 24 rotatably connected to the vessel body 1, a paddle stirrer 3 and a multi-layer frame stirrer 4 mounted on the stirring shaft 24; the stirring shaft 24 is provided with a medium inlet 12 at the lower part and a medium outlet 13 at the upper part.

[0034] like Figure 2 As shown, the light source device includes a first light source panel 14 and a second light source panel 15 disposed on the top of the vessel body 1; a third light source panel 16 and a fourth light source panel 17 disposed on the bottom of the vessel body 1; and a fifth light source panel 18 and a sixth light source panel 19 disposed on the side of the vessel body 1.

[0035] Specifically, the reactor is equipped with multiple light source panels, including those at the top, sides, and bottom. This ensures that light energy is evenly distributed throughout the reactor, improving photocuring efficiency and helping to guarantee consistent product quality. The combination of paddle agitators and multi-layer frame agitators within the reactor body enables rapid and efficient mixing of materials both radially and longitudinally. The frame agitators also effectively scrape away any residual material from the reactor's inner walls.

[0036] It should be added that the top of the reactor is equipped with a nitrogen inlet 6, which can introduce inert nitrogen gas during the reaction process to reduce the influence of oxygen on the reaction. This is especially important for light-curing reactions that are sensitive to oxygen, and helps to improve the performance and quality of the product.

[0037] It should be noted that the paddle stirrer 3 is solid; the vent port keeps the reactor under normal pressure.

[0038] like Figure 3 As shown, further, a speed reducer 21 is provided on the top of the stirring shaft 24, and a motor 20 is provided above the speed reducer 21.

[0039] Furthermore, the multi-layer frame agitator 4 is provided with a hollow cavity, which is used for the flow of the medium.

[0040] Specifically, the heating or cooling operation is aided by introducing hot or cold fluid into the hollow cavity; the paddle agitator 3 and the multi-layer frame agitator 4 ensure that the reactants are fully and uniformly mixed within the reactor. In particular, the hollow cavity design of the multi-layer frame agitator assists in heating or cooling operations, thereby allowing for more precise control of the reaction temperature.

[0041] Furthermore, the distance between the edge of the multi-layer frame stirrer 4 and the inner wall of the vessel body 1 is 0.5cm-1cm.

[0042] like Figure 4 As shown, the liquid guiding device 22 is further connected to the third feed port 9, and 10-50 liquid guiding holes 23 are uniformly arranged on the surface of the liquid guiding device 22.

[0043] Furthermore, the liquid guiding device 22 is a circular tube.

[0044] Furthermore, the liquid guiding hole 23 is positioned facing the inner wall of the vessel body 1, and the liquid guiding hole 23 is 1cm-2cm away from the inner wall of the vessel body 1.

[0045] Furthermore, a baffle is provided below the liquid guiding hole 23, the baffle has an angle of 30°-60° with the inner wall of the vessel body 1, and the outer edge of the baffle is 0.1cm-0.5cm away from the inner wall of the vessel body 1.

[0046] Furthermore, the first light source panel 14, the second light source panel 15, the third light source panel 16, the fourth light source panel 17, the fifth light source panel 18, and the sixth light source panel 19 are made of transparent glass with a light transmittance of ≥95%; the thickness of the first light source panel 14, the second light source panel 15, the third light source panel 16, the fourth light source panel 17, the fifth light source panel 18, and the sixth light source panel 19 is ≤ the thickness of the vessel wall.

[0047] Specifically, all light source panels are made of transparent glass with a light transmittance of ≥95%, which minimizes light loss and improves energy efficiency.

[0048] More specifically, by installing multiple light source panels on the top, sides, and bottom of the reactor, and cooling the reactor with a medium circulated through the stirring shaft, the problems of conventional light sources only being located at the top of the reactor, resulting in long light source initiation distances, insignificant initiation effects, and long reaction times are avoided. Depending on production needs, one or more light source panels can be flexibly selected, allowing the light sources to contact the reactants more closely, improving the initiation efficiency of monomers within the reactor. Furthermore, the stirring shaft and agitator within the reactor allow for temperature regulation, effectively removing the heat from the polymerization reaction in a timely manner, resulting in better heat transfer than a jacket on the outer wall of the reactor.

[0049] Furthermore, the vessel body 1 is made of one of the following materials: stainless steel 304, stainless steel 316, stainless steel 316L, or titanium alloy.

[0050] In operation, monomers, initiators, and other materials are first added to the reactor through the first feed port 7 and the second feed port 8. Nitrogen gas is then introduced into the reactor through the nitrogen inlet 6 to replace the air inside the reactor. Excess gas escapes from the vent port 25. The motors 20 corresponding to the paddle agitator 3 and the frame agitator 4 are turned on, and the materials are efficiently and uniformly mixed in the reactor. The light source panels 14, 15, 16, 17, 18, and 19 are turned on, and the monomers in the reactor begin to polymerize. According to the process temperature requirements, cooling medium is introduced through the medium inlet 12 at the lower end of the stirring shaft. The cooling medium flows through the frame agitator and the stirring shaft at a certain flow rate and flows out from the outlet 13 at the upper end of the stirring shaft, carrying away the heat of polymerization and controlling the temperature inside the reactor to be maintained within a certain range.

[0051] During or after the polymerization reaction, diluent or monomer is added at a certain pressure through the third feed port 9. The material enters the liquid guiding device and, through the liquid guiding hole, flushes down the inner wall of the reactor to remove any residual adhesive. Other additives or auxiliaries are added through the first feed port 7 and the second feed port 8. After uniform mixing for a period of time, nitrogen is introduced through the nitrogen inlet 6, and the valve corresponding to the vent is closed. Then, the material can be filtered and packaged through the first discharge port 10 and the second discharge port 11 at an appropriate pressure.

[0052] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A photocurable adhesive reaction vessel, characterized in that, include: The vessel body (1), the stirring device (2) disposed inside the vessel body, the light source device disposed outside the vessel body, and the liquid guiding device (22) disposed on the upper end of the inner side wall of the vessel body (1); the top of the vessel body (1) is provided with a nitrogen inlet (6), and the top of the vessel body (1) is provided with a vent (25); the top of the vessel body (1) is provided with a first feed inlet (7), a second feed inlet (8), and a third feed inlet (9); the bottom of the vessel body (1) is provided with a first discharge outlet (10) and a second discharge outlet (11); The stirring device (2) includes a stirring shaft (24) rotatably connected to the vessel body (1), a paddle stirrer (3) and a multi-layer frame stirrer (4) mounted on the stirring shaft (24); the stirring shaft (24) is provided with a medium inlet (12) at the lower part and a medium outlet (13) at the upper part. The light source device includes a first light source panel (14) and a second light source panel (15) disposed on the top of the vessel body (1); a third light source panel (16) and a fourth light source panel (17) disposed on the bottom of the vessel body (1); and a fifth light source panel (18) and a sixth light source panel (19) disposed on the side of the vessel body (1).

2. The photocurable adhesive reaction vessel according to claim 1, characterized in that: A speed reducer (21) is provided on the top of the stirring shaft (24), and a motor (20) is provided above the speed reducer (21).

3. The photocurable adhesive reaction vessel according to claim 1, characterized in that: The multi-layer frame agitator (4) is provided with a hollow cavity, which is used for the flow of the medium.

4. The photocurable adhesive reaction vessel according to claim 1, characterized in that: The distance between the edge of the multi-layer frame stirrer (4) and the inner wall of the vessel body (1) is 0.5cm-1cm.

5. The photocurable adhesive reaction vessel according to claim 1, characterized in that: The liquid guiding device (22) is connected to the third feed port (9), and 10-50 liquid guiding holes (23) are uniformly arranged on the surface of the liquid guiding device (22).

6. The photocurable adhesive reaction vessel according to claim 1, characterized in that: The liquid guiding device (22) is a circular tube, and a plurality of liquid guiding holes (23) are opened on the surface of the circular tube.

7. The photocurable adhesive reaction vessel according to claim 6, characterized in that: The liquid guiding hole (23) is set towards the inner wall of the vessel body (1), and the liquid guiding hole (23) is 1cm-2cm away from the inner wall of the vessel body (1).

8. The photocurable adhesive reaction vessel according to claim 7, characterized in that: A baffle is provided below the liquid guiding hole (23). The angle between the baffle and the inner wall of the vessel body (1) is 30°-60°. The distance between the outer edge of the baffle and the inner wall of the vessel body (1) is 0.1cm-0.5cm.

9. The light-cured adhesive reaction kettle according to claim 1, characterized in that: The first light source panel (14), the second light source panel (15), the third light source panel (16), the fourth light source panel (17), the fifth light source panel (18), and the sixth light source panel (19) are made of transparent glass with a light transmittance ≥95%; the thickness of the first light source panel (14), the second light source panel (15), the third light source panel (16), the fourth light source panel (17), the fifth light source panel (18), and the sixth light source panel (19) is ≤ the thickness of the vessel wall.

10. The light-cured adhesive reaction kettle according to claim 1, characterized in that: The vessel body (1) is made of one of the following materials: stainless steel 304, stainless steel 316, stainless steel 316L, and titanium alloy.

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