Adjustable light curing equipment and method for continuous preparation of precise particles

Abstract

The invention belongs to the technical field of photocuring, and particularly relates to adjustable photocuring equipment and method for continuous preparation of precise particles, and the adjustable photocuring equipment comprises a reactor shell, a cuboid inner insertion drawing box, a pipeline clamping ring plate, a conveying pipe, an ultraviolet lamp and an ultraviolet lamp light source control and display. The preparation method specifically comprises the following steps: S1, loading a photocuring reactor: fixing a conveying pipe, and outwards drawing out a cuboid inner insertion drawing box, so that the conveying pipe passes through a pipeline clamping ring plate and passes through an ultraviolet lamp; s2, adjusting a light curing reaction space; and S3, adjusting light curing reaction conditions. According to the scheme, the microparticles can be conveniently, efficiently and uniformly photocured in a controllable spatial range through simple, convenient and accurate operation, and the overall crosslinking reaction degree of the microparticles is uniform; the advantages of the microfluidic technology are combined, the flow speed of liquid drops in the downstream collecting pipe is constant, monodispersity is good, microparticles obtained through uniform light curing are uniform in structure and morphology, and continuous preparation of the microparticles is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of photocuring, and in particular to an adjustable photocuring device and method for continuous preparation of precision particles. Background Art

[0002] Photocuring refers to the free radical polymerization reaction of monomers or oligomers under light irradiation, which is initiated by photoinitiators to generate polymer solids. UV curing is a polymerization method that uses ultraviolet radiation to induce the synthesis of high molecular polymers. It has the advantages of fast reaction speed, high efficiency, and mild reaction conditions. It is widely used in the production of polymer material products in many industries such as photosensitive adhesives, electronic device encapsulants, film materials, coating materials, and dental filling materials.

[0003] Existing industrial applications of synthesizing polymers using UV curing reactions are mainly aimed at material surface treatment or batch synthesis of large-volume polymers. UV lamp tubes, desktop UV lamps or UV light boxes are usually used for photocuring, which is difficult to meet the UV curing synthesis needs of fine chemicals. For example, existing UV light boxes are large and cannot be adjusted, that is, the irradiation space range of the internal UV light source cannot be changed; the position of the UV lamp is fixed and cannot be rotated, that is, the irradiation angle of the UV light source cannot be adjusted. Especially for scientific research experimental scenarios based on microfluidic technology to synthesize polymer microspheres and industrial applications of photochemical reactions such as composite polymer microparticle synthesis, the existing UV irradiation method is difficult to accurately control the irradiation range, has few adjustable parameters, poor applicability, and the photocuring reaction results are not ideal.

[0004] Limited by the existing technical methods and equipment, the application of ultraviolet light curing reaction generally has the problem of uneven ultraviolet light radiation, that is, uneven curing reaction intensity. For example, when the polymer microparticles are photocured, there is a risk of local overreaction due to overexposure and explosion on the near-light side of the polymer droplets, while the cross-linking reaction on the far-light side is not sufficient. In this way, the overall reaction of the polymer microparticles is uneven, and the curing is uneven, resulting in poor mechanical properties of the polymer material and safety risks in the production process. Therefore, there is a need for a new preparation method and equipment that can achieve uniform curing synthesis of polymer microparticles. Summary of the invention

[0005] The purpose of the present invention is to provide an adjustable light curing device and method for continuous preparation of precision particles, so as to solve the problems that the ultraviolet light irradiation method of the prior art proposed in the above background technology is difficult to accurately control the irradiation range, has few adjustable parameters, poor applicability, and uneven ultraviolet light radiation, i.e., uneven curing reaction intensity.

[0006] To achieve the above object, the present invention provides the following technical solution: an adjustable light curing device for continuous preparation of precision particles, comprising:

[0007] Reactor shell, rectangular plug-in box, pipeline clamping ring plate, delivery pipe, UV lamp and UV light source control and display;

[0008] The reactor shell is a square structure that is hollow and open at both ends, the rectangular plug-in box is movably plugged into the openings at both ends of the reactor shell, the rectangular plug-in box is a hollow structure with one end open, and the open end of the rectangular plug-in box is plugged into the opening of the reactor shell, the pipeline clamping ring plate is arranged at one end of the rectangular plug-in box away from the reactor shell, and the pipeline clamping ring plate is connected to the inside of the rectangular plug-in box, the delivery pipe passes through and is plugged between the pipeline clamping ring plates on both sides and extends outward, the ultraviolet lamp is arranged inside the reactor shell, and the delivery pipe transports polymer droplets to be cured that are arranged at equal intervals;

[0009] The emission angle of the ultraviolet lamp inside the reactor shell is adjustable, the ultraviolet light source control and display are arranged outside the reactor shell, and the ultraviolet light source control and display are electrically connected to the ultraviolet lamp.

[0010] Preferably, a limiting end plate is provided at one end of the rectangular internal plug-in box away from the reactor shell, and the pipeline clamping ring plate passes through the limiting end plate and extends outward.

[0011] Preferably, a fastening mechanism is provided on the outer wall of at least one pipeline clamping ring plate, and the fastening mechanism includes an internal threaded barrel fixed on the outer wall of the pipeline clamping ring plate, a screw is threaded on the internal threaded barrel, a disc is provided on the outer end of the screw, and a fastening rope is provided inside the pipeline clamping ring plate, both ends of the fastening rope pass through the pipeline clamping ring plate and extend to the outside, both ends of the fastening rope are connected to the disc, and the conveying pipe passes through the fastening rope.

[0012] Preferably, a scale is provided on the outer wall of the rectangular inner plug-in drawer box.

[0013] Preferably, the reactor shell includes two corner frame plates, one end of the two corner frame plates that is close to each other is rotatably connected by a hinge, and the other end of the two corner frame plates that is close to each other is connected by a locking assembly.

[0014] Preferably, limiting frames are provided at both end openings of the reactor shell, and an anti-detachment frame is provided on the outer wall of one end of the rectangular plug-in box close to the reactor shell. The anti-detachment frame is located on the inner side of the reactor shell, and the outer dimension of the anti-detachment frame is larger than the inner dimension of the limiting frame.

[0015] Preferably, a carrying plate is rotatably connected to the inner wall of the reactor shell, the carrying plate is arranged on four surfaces of the inner wall of the reactor shell, and the ultraviolet lamp is installed on a side wall of the carrying plate facing the inside of the reactor shell.

[0016] Preferably, adjusting disks are provided on the four surfaces of the outer wall of the reactor shell, and a connecting screw is connected to the side wall of the adjusting disk facing the reactor shell. The connecting screw passes through the reactor shell and extends to the interior of the reactor shell, and a threaded hole matching the connecting screw is provided on the outer wall of the supporting plate.

[0017] Preferably, a damping friction ring is sleeved on the outer wall of the connecting screw, and the damping friction ring is movably embedded in the side wall of the reactor shell, and the damping friction ring is made of rubber.

[0018] A method for continuous preparation of precision microparticles, the preparation method is as follows:

[0019] S1: Loading the light-curing reactor: Fix the delivery tube, pull out the rectangular plug-in box, pass the delivery tube through the pipeline clamping ring plate, and make the delivery tube pass through the ultraviolet lamp;

[0020] S2: Adjusting the photocuring reaction space: adjusting the extension distance of the rectangular plug-in drawer boxes at both ends to determine the length of the pipeline receiving ultraviolet light, that is, the ultraviolet light radiation space in the reactor shell and the rectangular plug-in drawer boxes;

[0021] S3: Adjusting the photocuring reaction conditions: By adjusting the irradiation angle of the UV lamp, adjusting the time and intensity of the UV light emitted by the UV lamp based on the UV lamp light source control and display, and turning on the power switches of the corresponding number of UV lamps as needed, a free radical polymerization reaction initiated by UV light is carried out, and uniformly cured microparticles are collected downstream of the conveying pipe.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This scheme achieves uniform photocuring of microparticles, and the overall cross-linking reaction degree of the microparticles is uniform;

[0024] This scheme realizes an efficient photocuring reaction, so that the microdroplets are solidified into microparticles in time after being generated, the size and morphology of the droplets are maintained, and microparticles with uniform structure and morphology are obtained. Combined with the characteristics of constant flow rate of synthetic droplets and good monodispersity of droplets by microfluidics technology, the continuous preparation of microparticles with narrow particle size distribution is realized;

[0025] This solution can effectively prevent ultraviolet light leakage, prevent the blockage of upstream and downstream pipelines or channels of the microparticle preparation equipment caused by ultraviolet light leakage, effectively avoid the scrapping of the microparticle preparation device, and at the same time avoid ultraviolet light radiation causing harm to the human body;

[0026] This solution can control the amount of light radiation and the luminous intensity, effectively preventing problems such as implosion caused by overexposure;

[0027] This solution can control multiple operating variables to achieve more convenient and accurate regulation of reaction conditions such as the illumination angle, intensity, radiation spatial range and time of ultraviolet light, and optimize the ultraviolet light curing process;

[0028] This solution is simple and easy to operate, which is conducive to mass production;

[0029] The device of the present invention is a miniaturized portable device, which can enrich the control methods, improve product quality and increase production efficiency through combined use methods such as multi-stage series connection of multiple devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure in which the reactor housing and the rectangular plug-in box are separated according to the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the reactor housing, the carrying plate and the ultraviolet lamp of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the corner frame plate of the present invention when it is unfolded;

[0034] Figure 5 It is a schematic diagram of the structure of the connection between the adjusting disk, the connecting screw and the bearing plate of the present invention;

[0035] Figure 6 For the present invention Figure 1 A schematic diagram of the enlarged structure of part A;

[0036] Figure 7 This is an optical microscopic picture of the polyethylene glycol diacrylate polymer microparticles prepared in Example 6 of the present invention, magnified 10 times;

[0037] Figure 8 This is an optical microscopic picture of the polyethylene glycol diacrylate polymer microparticles prepared in Example 6 of the present invention, magnified 20 times;

[0038] Fig. 9 This is a statistical diagram of the particle size distribution of polyethylene glycol diacrylate polymer microparticles prepared in Example 6 of the present invention.

[0039] Fig.10 This is a bar graph showing the particle size distribution of polyethylene glycol diacrylate polymer microparticles prepared in Example 6 of the present invention.

[0040] In the figure: 1. Reactor shell; 2. Rectangular plug-in box; 3. Delivery pipe; 4. Load-bearing plate; 5. Hinge; 6. Limit frame; 7. Lock assembly; 8. Adjustment disk; 9. Connecting screw; 10. Damping friction ring; 11. Threaded hole; 12. UV lamp; 13. UV light source control and display; 14. Limit end plate; 15. Pipeline clamping ring plate; 16. Internal threaded barrel; 17. Screw; 18. Disk; 19. Fastening rope; 20. Anti-detachment frame. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] Embodiment 1:

[0044] See also Figure 1-10 The present invention provides a technical solution: an adjustable light curing device for continuous preparation of precision particles, comprising: a reactor shell 1, a rectangular plug-in box 2, a pipeline clamping ring plate 15, a delivery pipe 3, an ultraviolet lamp 12 and an ultraviolet light source control and display 13;

[0045] Among them, the reactor shell 1 is a square structure that is hollow and open at both ends, the rectangular plug-in box 2 can be movably inserted into the openings at both ends of the reactor shell 1, the rectangular plug-in box 2 is hollow and open at one end, and the open end of the rectangular plug-in box 2 is inserted into the opening of the reactor shell 1, the pipeline clamping ring plate 15 is arranged at one end of the rectangular plug-in box 2 away from the reactor shell 1, and the pipeline clamping ring plate 15 is connected to the rectangular plug-in box 2, the delivery pipe 3 passes through the pipeline clamping ring plates 15 inserted on both sides and extends outward, the ultraviolet lamp 12 is arranged on the four walls inside the reactor shell 1, and the delivery pipe 3 transports the polymer droplets to be cured arranged at equal intervals; the irradiation angle of the ultraviolet lamp 12 inside the reactor shell 1 is adjustable, the ultraviolet light source control and display 13 is arranged outside the reactor shell 1, and the ultraviolet light source control and display 13 are electrically connected to the ultraviolet lamp 12.

[0046] Analysis of the above content: The reactor shell 1 and the rectangular internal plug-in drawer box 2 are both made of light-shielding materials, and the rectangular internal plug-in drawer box 2 is movably inserted into the openings at both ends of the reactor shell 1, so that the rectangular internal plug-in drawer box 2 can move relative to the reactor shell 1. The adjustable design between the reactor shell 1 and the rectangular internal plug-in drawer box 2 can accurately control the length of the pipeline exposed to ultraviolet light.

[0047] The ultraviolet lamp 12 can perform 360° ultraviolet light irradiation inside the reactor shell 1 , so as to uniformly photo-cure the polymer droplets to be cured transported in the transport pipe 3 .

[0048] Embodiment 2:

[0049] See also Figure 1-10 The present invention provides a technical solution based on the first embodiment: a limiting end plate 14 is provided at one end of the rectangular plug-in box 2 away from the reactor shell 1, and the pipeline clamping ring plate 15 penetrates the limiting end plate 14 and extends outward. A fastening mechanism is provided on the outer wall of at least one pipeline clamping ring plate 15, and the fastening mechanism includes an internal threaded tube 16 fixed on the outer wall of the pipeline clamping ring plate 15, and a screw 17 is screwed on the internal threaded tube 16, and a disc 18 is provided at the outer end of the screw 17. A fastening rope 19 is provided inside the pipeline clamping ring plate 15, and both ends of the fastening rope 19 penetrate the pipeline clamping ring plate 15 and extend to the outside, and both ends of the fastening rope 19 are connected to the disc 18, and the delivery pipe 3 passes through the fastening rope 19.

[0050] Analysis of the above content: The fastening between the delivery pipe 3 and one of the pipeline clamping ring plates 15 does not affect the telescopic movement of the rectangular plug-in drawer boxes 2 on both sides relative to the reactor shell 1.

[0051] When tightening the conveying pipe 3 and the pipeline clamping ring plate 15, the conveying pipe 3 is pre-passed through the tightening rope 19, and then the screw 17 is twisted and rotated. The screw 17 rises relative to the internal threaded tube 16, and the screw 17 lifts the tightening rope 19 through the disc 18, so that the tightening rope 19 is tensioned, thereby clamping the conveying pipe 3. The disc 18 here can be set to rotate relative to the screw 17, so as to avoid the tightening rope 19 from being entangled on the screw 17 when the screw 17 is twisted and rotated.

[0052] Embodiment three:

[0053] See also Figure 1-10 The present invention provides a technical solution based on the first embodiment: a scale is arranged on the outer wall of the rectangular inner plug-in drawer box 2.

[0054] Analysis of the above content: Based on the setting of the scale, it is convenient to observe the distance that the rectangular inner plug-in drawer box 2 is pulled out, so as to facilitate the adjustment of the total length of the reactor shell 1 and the rectangular inner plug-in drawer box 2.

[0055] Embodiment 4:

[0056] See also Figure 1-10 The present invention provides a technical solution based on Example 1: the reactor shell 1 includes two corner frames, one end of the two corner frames close to each other is rotatably connected by a hinge 5, and the other end of the two corner frames close to each other is connected by a locking assembly 7.

[0057] Analysis of the above content: The corner frame panels can be flipped and folded, and can also be flipped open, which is convenient for the installation and maintenance of the internal structure.

[0058] Embodiment five:

[0059] See also Figure 1-10 The present invention provides a technical solution based on Example 1: limit frames 6 are provided at the openings at both ends of the reactor shell 1, and an anti-detachment frame 20 is provided on the outer wall of one end of the rectangular plug-in box 2 close to the reactor shell 1. The anti-detachment frame 20 is located on the inner side of the reactor shell 1, and the outer dimension of the anti-detachment frame 20 is larger than the inner dimension of the limit frame 6.

[0060] Analyzing the above contents: through the cooperation between the limiting frame 6 and the anti-detachment frame 20 , the rectangular internal plug-in drawer box 2 will not detach from the reactor shell 1 .

[0061] Embodiment six:

[0062] See also Figure 1-10The present invention provides a technical solution based on the first embodiment: the inner wall of the reactor shell 1 is rotatably connected with a bearing plate 4, the bearing plate 4 is arranged on four surfaces of the inner wall of the reactor shell 1, and the ultraviolet lamp 12 is installed on a side wall of the bearing plate 4 facing the inside of the reactor shell 1. Adjustment disks 8 are arranged on the four surfaces of the outer wall of the reactor shell 1, and the adjustment disk 8 is connected with a connecting screw 9 on a side wall facing the reactor shell 1, the connecting screw 9 penetrates the reactor shell 1 and extends to the inside of the reactor shell 1, and a threaded hole 11 matching the connecting screw 9 is arranged on the outer wall of the bearing plate 4. A damping friction ring 10 is sleeved on the outer wall of the connecting screw 9, and the damping friction ring 10 is movably embedded in the side wall of the reactor shell 1, and the damping friction ring 10 is made of rubber.

[0063] Analysis of the above content: When the adjusting disk 8 is rotated, the adjusting disk 8 can drive the supporting plate 4 and the ultraviolet lamp 12 to rotate through the connecting screw 9, so that the ultraviolet lamp 12 can irradiate the droplets in the conveying tube 3 from different angles.

[0064] A method for continuous preparation of precision microparticles, the preparation method is as follows:

[0065] S1: Loading the light-curing reactor: Fix the delivery tube 3, pull out the rectangular plug-in box 2, pass the delivery tube 3 through the pipeline clamping ring plate 15, and make the delivery tube 3 pass through the ultraviolet lamp 12;

[0066] S2: Adjusting the photocuring reaction space: adjusting the extension distance of the rectangular plug-in drawer box 2 at both ends to determine the length of the pipeline receiving ultraviolet light, that is, the ultraviolet light radiation space in the reactor shell 1 and the rectangular plug-in drawer box 2;

[0067] S3 adjusts the photocuring reaction conditions: by adjusting the irradiation angle of the ultraviolet lamp 12, adjusting the time and intensity of the ultraviolet light irradiation emitted by the ultraviolet lamp 12 based on the ultraviolet lamp light source control and display 13, and turning on the power switches of the corresponding number of ultraviolet lamps 12 as needed, 360° ultraviolet light irradiation is performed in the reactor shell 1 to induce a uniform photocuring reaction, and the uniformly cured microparticles are collected downstream of the conveying pipe 3.

[0068] This scheme is applicable to polymer monomers or oligomers that can undergo free radical polymerization reaction by ultraviolet radiation, such as common water-soluble photocurable polymer monomers: polyethylene glycol diacrylate (PEGDA), acrylamide (AAm), polymethacrylate sulfobetaine (SBMA), etc.; oil-soluble photocurable polymer monomers: ethoxylated trimethylolpropane triacrylate (ETPTA), trimethylolpropane triacrylate (TMPTA), etc. Combined with microparticle synthesis technology based on microfluidic droplet template method.

[0069] This solution can flexibly set the UV irradiation time according to the needs of use to adapt to polymer systems with different reaction rates. The light intensity can be 10mW / cm 2 Up to 5000mW / cm 2 The range of curing conditions can be adjusted (by selecting the corresponding UV lamp 12) to meet different application requirements from low-energy slow curing to high-energy fast curing. According to the absorption characteristics of different photoinitiators, the wavelength range of the UV light source required for the photocurable material is generally 200nm to 450nm. This solution preferably uses UV light with a wavelength of 365nm or 395nm. This solution also allows the curing conditions to be optimized by replacing or adjusting the configuration of the UV light source, such as replacing the UV light panel to change the illumination area and uniformity, adjusting the number of UV lamp beads to increase or decrease the illumination intensity, or using different types of UV LED light sources or mercury lamp light sources to optimize the illumination uniformity, spectral distribution and illumination time, so as to further improve the controllability and uniformity of the photocuring process of polymer micro-nanoparticles.

[0070] The power switch, light intensity, i.e., power, and light exposure time of the ultraviolet lamp 12 on each carrier plate 4 can be controlled individually. Light intensity I (watts per square meter, W / m 2 ) can be calculated by the following formula:

[0071]

[0072] Where P (watt, W) is the total light power of the UV light source. θ is the irradiation angle of the UV lamp panel. h (meter, m) is the vertical distance from the center point of the UV light source to the surface of the irradiated object.

[0073] The UV curing method proposed in this scheme can be used for the synthesis of polymer microspheres or microparticles based on droplet microfluidics. Take the synthesis of polyethylene glycol diacrylate polymer microparticles as an example. Using droplet microfluidics, polyethylene glycol diacrylate polymer microsphere droplets dispersed in fluorinated oil can be prepared, with a diameter of about 100 μm, specifically composed of low molecular weight polyethylene glycol diacrylate (PEGDA), deionized water, anhydrous ethanol and photoinitiator 2-hydroxy-2-methylpropionylphenone (HMP) in a mass ratio of 40wt%, 39wt%, 20wt% and 1wt%, respectively. The polymer microsphere droplets are dispersed in fluorinated oil, and the droplet microfluidic device is connected through a transparent polytetrafluoroethylene (PTFE) pipeline with an outer diameter of 250μm and an inner diameter of 200μm, ready for UV curing reaction.

[0074] The length of the reactor shell 1 is 10 cm. The extension distances of the rectangular plug-in boxes 2 at both ends are adjusted to 10 cm according to the needs of use. The spatial range for ultraviolet light irradiation, that is, the length range of the pipeline subjected to ultraviolet light radiation, is determined. Combined with the flow rate of the polyethylene glycol diacrylate polymer microsphere droplets in the pipeline, it is set to 905 μL / h, that is, the flow rate is 5 cm / s. It can be seen that the maximum reaction time of the polyethylene glycol diacrylate polymer microsphere droplets for ultraviolet light curing reaction is 6 s.

[0075] Turn the adjustment disk 8 to adjust the angles of the four carrier plates 4 to 0, that is, the four carrier plates 4 are parallel to the wall of the reactor shell 1. Then turn on the power switches of the ultraviolet lamps 12 on the four carrier plates 4 in turn, and 360° ultraviolet light irradiation is carried out in the reactor shell 1 to induce a uniform photocuring reaction. The ultraviolet light source control and display 13 can adjust the ultraviolet light source. At 3500mW / cm 2 The ultraviolet light power density was used to carry out the ultraviolet light-induced polymerization reaction of polyethylene glycol diacrylate (PEGDA). The obtained polyethylene glycol diacrylate polymer microparticles had a uniform particle size ( Figure 7 ), the particle size distribution is narrow, 86.41% of the particles are distributed in the range of 86.4-127μm, and 53.74% of the particles are distributed in the range of 98.1-111μm ( Fig.10 ), where Dv(10)=89.7μm, Dv(50)=113μm, Dv(10)=142μm( Fig. 9 ). The polyethylene glycol diacrylate polymer microparticles have regular morphology and smooth surface ( Figure 8 ), indicating that the overall cross-linking reaction degree of the microparticles is uniform, that is, uniform photocuring of the microparticles is achieved by this method.

[0076] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0077] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable light curing device for continuous preparation of precision particles, characterized in that: include: Reactor shell (1), rectangular plug-in box (2), pipeline clamping ring plate (15), delivery pipe (3), ultraviolet lamp (12) and ultraviolet lamp light source control and display (13); The reactor shell (1) is a square structure that is hollow and open at both ends; the rectangular plug-in box (2) is movably plugged into the openings at both ends of the reactor shell (1); the rectangular plug-in box (2) is a hollow structure that is open at one end; the open end of the rectangular plug-in box (2) is plugged into the opening of the reactor shell (1); the pipeline clamping ring plate (15) is arranged at one end of the rectangular plug-in box (2) away from the reactor shell (1); the pipeline clamping ring plate (15) is connected to the inside of the rectangular plug-in box (2); the delivery pipe (3) passes through and is plugged between the pipeline clamping ring plates (15) on both sides and extends outward; the ultraviolet lamp (12) is arranged inside the reactor shell (1); and the delivery pipe (3) transports polymer droplets to be cured that are arranged at equal intervals; The ultraviolet lamp (12) is inside the reactor shell (1) and has an adjustable irradiation angle. The ultraviolet lamp light source control and display (13) is arranged outside the reactor shell (1), and the ultraviolet lamp light source control and display (13) is electrically connected to the ultraviolet lamp (12).

2. The adjustable light curing device for continuous preparation of precision particles according to claim 1, characterized in that: A limiting end plate (14) is provided at one end of the rectangular plug-in drawer box (2) away from the reactor shell (1), and the pipeline clamping ring plate (15) penetrates the limiting end plate (14) and extends outwards.

3. The adjustable light curing device for continuous preparation of precision particles according to claim 2, characterized in that: A fastening mechanism is arranged on the outer wall of at least one pipeline clamping ring plate (15), and the fastening mechanism comprises an internal threaded tube (16) fixed on the outer wall of the pipeline clamping ring plate (15), a screw (17) is screwed on the internal threaded tube (16), a disc (18) is arranged at the outer end of the screw (17), a fastening rope (19) is arranged inside the pipeline clamping ring plate (15), both ends of the fastening rope (19) pass through the pipeline clamping ring plate (15) and extend to the outside, both ends of the fastening rope (19) are connected to the disc (18), and the conveying pipe (3) passes through the fastening rope (19).

4. The adjustable light curing device for continuous preparation of precision particles according to claim 1, characterized in that: A scale is provided on the outer wall of the rectangular internal plug-in drawer box (2).

5. The adjustable light curing device for continuous preparation of precision particles according to claim 1, characterized in that: The reactor shell (1) comprises two corner frame plates, one end of the two corner frame plates being close to each other is rotatably connected via a hinge (5), and the other end of the two corner frame plates being close to each other is connected via a locking assembly (7).

6. The adjustable light curing device for continuous preparation of precision particles according to claim 1, characterized in that: Limiting frames (6) are provided at both end openings of the reactor shell (1); an anti-detachment frame (20) is provided on the outer wall of one end of the rectangular plug-in drawer box (2) close to the reactor shell (1); the anti-detachment frame (20) is located on the inner side of the reactor shell (1), and the outer dimensions of the anti-detachment frame (20) are greater than the inner dimensions of the limiting frames (6).

7. The adjustable light curing device for continuous preparation of precision particles according to claim 1, characterized in that: The inner wall of the reactor shell (1) is rotatably connected to a bearing plate (4), the bearing plate (4) being arranged on four surfaces of the inner wall of the reactor shell (1), and the ultraviolet lamp (12) being installed on a side wall of the bearing plate (4) facing the inside of the reactor shell (1).

8. The adjustable light curing device for continuous preparation of precision particles according to claim 7, characterized in that: Adjustment disks (8) are arranged on four surfaces of the outer wall of the reactor shell (1); a connecting screw (9) is connected to the adjusting disk (8) on one side wall facing the reactor shell (1); the connecting screw (9) penetrates the reactor shell (1) and extends into the interior of the reactor shell (1); and a threaded hole (11) matching the connecting screw (9) is arranged on the outer wall of the carrier plate (4).

9. The adjustable light curing device for continuous preparation of precision particles according to claim 8, characterized in that: A damping friction ring (10) is sleeved on the outer wall of the connecting screw (9), and the damping friction ring (10) is movably embedded in the side wall of the reactor shell (1), and the damping friction ring (10) is made of rubber.

10. A method for continuous preparation of precision microparticles, characterized in that: The adjustable light curing device for continuous preparation of precision particles according to any one of claims 1 to 9 is used, and the method is as follows: S1: Loading the light-curing reactor: Fix the delivery tube (3), pull out the rectangular plug-in box (2), pass the delivery tube (3) through the pipeline clamping ring plates (15), and make the delivery tube (3) pass through the ultraviolet lamp (12); S2: Adjusting the photocuring reaction space: adjusting the extension distance of the rectangular plug-in drawer box (2) at both ends thereof to determine the length of the pipeline receiving ultraviolet light, i.e. the ultraviolet light radiation space within the reactor shell (1) and the rectangular plug-in drawer box (2); S3 adjusts the photocuring reaction conditions: by adjusting the irradiation angle of the ultraviolet lamp (12), adjusting the time and intensity of the ultraviolet light emitted by the ultraviolet lamp (12) based on the ultraviolet lamp light source control and display (13), and turning on the power switches of a corresponding number of ultraviolet lamps (12) as needed, a free radical polymerization reaction initiated by ultraviolet light is carried out, and uniformly cured microparticles are collected downstream of the conveying pipe (3).

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