Device and method for degrading retired epoxy resin

Abstract

The invention belongs to the technical field of epoxy resin degradation, and discloses a method for degrading decommissioned epoxy resin, which comprises the following steps: S1, destroying a surface film layer of the decommissioned epoxy resin by using laser to form a loose porous structure on the surface of the decommissioned epoxy resin; and S2, putting the pre-treated retired epoxy resin into a reaction container, and then adding a degradation reagent to carry out degradation reaction so as to realize the degradation of the epoxy resin. The invention further discloses a device for degrading the retired epoxy resin. The device comprises the laser cleaning platform and the reaction container. The method has the advantages of high degradation and recovery efficiency, realization of complete degradation of the material under mild conditions, recovery to obtain an environment-friendly liquid, solving of the difficult problem of difficult and slow recovery of the resin in the decommissioned epoxy resin, effective resource saving, and practical application value.

Description

Technical Field

[0001] The present invention belongs to the technical field of epoxy resin degradation, and particularly relates to a device and method for degrading retired epoxy resin. Background Art

[0002] Epoxy resin has excellent insulation performance, good physical and chemical properties, and good stability after curing, so it is widely used in fields such as insulating materials for power equipment and encapsulation materials for electronic components. With the continuous increase of emerging application scenarios, the proportion of epoxy resin dry-type transformers is constantly rising. Epoxy resin dry-type transformers use epoxy resin as the insulating material. The high- and low-voltage windings are wound with copper strips (foils), and epoxy resin is cast and cured in a vacuum to form a high-strength fiberglass body structure.

[0003] The number of epoxy resin dry-type transformers scrapped due to faults is increasing. On the one hand, the situation of overall scrapping caused by local faults causes great waste; on the other hand, the traditional recycling and treatment methods damage the winding structure, which is not conducive to understanding the damage situation of the windings and fault analysis. Vigorously promoting the recycling and utilization of transformer products, improving the technical level of recycling and utilization, thereby improving the material utilization rate and reducing the impact on the environment at the same time, is an inevitable development trend for the recycling and utilization of transformer products. At present, retired epoxy resin can only be incinerated or landfilled after being abandoned, resulting in problems such as resource waste and environmental pollution. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a device and method for degrading retired epoxy resin. The present invention aims to solve the problems of large environmental pollution and serious resource waste when traditional methods such as incineration or landfilling are used to treat waste epoxy resin.

[0005] The present invention uses a lithography-assisted method. Based on the relationship between laser and resin interaction, by analyzing the influence law of laser and resin interaction, laser parameters such as galvanometer frequency, vibration mode, laser power, pulse frequency, wavelength, and working distance are determined, and the interaction between laser and resin is controlled in the thermogravimetric region to achieve the optimal cleaning efficiency. In this way, the rate and cleanliness of degrading epoxy resin are effectively improved, and the technical level of recycling and utilization is improved.

[0006] To achieve the above purpose, the present invention provides a method for degrading retired epoxy resin, including the following steps: S1. Degradation pretreatment; Using a laser to damage the surface film layer of retired epoxy resin, so that a loose and porous structure is formed on the surface of the retired epoxy resin; S2. Degradation; Put the retired epoxy resin pretreated in step S1 into a reaction vessel, and then add a degradation reagent to carry out a degradation reaction, so as to achieve the degradation of epoxy resin.

[0007] Furthermore, the retired epoxy resin in step S1 includes acid anhydride-cured epoxy resin.

[0008] Furthermore, the degradation reagent in step S2 includes ethylene glycol.

[0009] Furthermore, the conditions for the degradation reaction in step S2 are as follows: The mass ratio of the acid anhydride-cured epoxy resin to ethylene glycol is 1:5 - 7, the temperature of the degradation reaction is 180 - 190 °C, and the reaction time of the degradation reaction is 12 - 14 h.

[0010] Furthermore, the conditions for the degradation reaction in step S2 are as follows: The mass ratio of the acid anhydride-cured epoxy resin to ethylene glycol is 1:6, the temperature of the degradation reaction is 180 °C, and the reaction time of the degradation reaction is 12 h.

[0011] Furthermore, the time for the complete degradation of the retired epoxy resin is not more than 13 h.

[0012] The present invention also provides a device for degrading retired epoxy resin, including a laser cleaning platform and a reaction vessel; A laser is provided on the laser cleaning platform, and the laser can move freely on the laser cleaning platform. The laser is used to emit laser to damage the surface film layer of the retired epoxy resin, so that a loose and porous structure is formed on the surface of the retired epoxy resin, thereby improving the degradation reaction rate of the retired epoxy resin; The laser cleaning platform is also equipped with a scanning electron microscope, and the scanning electron microscope is used to observe the microscopic structure of the surface of the retired epoxy resin in the cold state mode; The reaction vessel is used for the degradation reaction of the retired epoxy resin.

[0013] Furthermore, the laser cleaning platform includes a bottom plate, leveling feet are arranged on the lower side of the bottom plate, a group of support rods are respectively arranged at both ends on the upper side of the bottom plate, lifting sliders are slidably connected to each group of support rods, the upper ends of the two groups of support rods are jointly connected with an upper cross beam, one end of the upper cross beam is rotatably connected with a lifting screw rod parallel to the support rod, the lifting screw rod is threadedly connected with the corresponding lifting slider, the lower end of the lifting screw rod is rotatably connected with the bottom plate, the upper end of the lifting screw rod penetrates through the upper cross beam and is fixedly connected with a hand wheel, a back plate is fixedly connected between the two lifting sliders, a left-right moving module and a servo motor are installed on the back plate, the servo motor is used to drive the free end of the left-right moving module to move left and right, the free end of the left-right moving module is fixedly connected with a mounting seat, and the laser is arranged on the mounting seat.

[0014] Furthermore, the scanning electron microscope is also arranged on the mounting seat.

[0015] Furthermore, the reaction vessel is equipped with a temperature control system. Beneficial effects

[0016] The present invention solves the problems that due to the large thickness of the resin layer of the winding coil, impurities, low-molecular organic matter, etc. generated during the degradation process adhere to the material surface, hindering the further contact of the degradation liquid with the epoxy resin and affecting the degradation rate, and solves the problems of difficult and slow recycling of retired epoxy resin, effectively saving resources and having practical application value. It has the advantages of low recycling cost, mild reaction conditions, and fast reaction rate.

[0017] Specifically, the surface film layer of the epoxy resin is damaged by laser to form a loose and porous structure, increasing the surface area and improving the contact area and reaction rate of the subsequent chemical degradation reaction. Optimize the laser parameters: By optimizing parameters such as laser wavelength, pulse frequency, and power, ensure the best effect of the interaction between the laser and the epoxy resin and achieve the optimal cleaning efficiency. Laser pretreatment changes the surface morphology of the epoxy resin, increases its contact area with the degradation reagent, and thus significantly improves the rate of the degradation reaction. The optimized laser parameters ensure the efficiency and consistency of the treatment process, reducing unnecessary energy consumption and material damage.

[0018] Ethylene glycol is used as the degradation reagent. Because of its high selectivity for the cleavage of ester bonds, it can decompose the epoxy resin into oligomers with active hydroxyl groups. By adjusting the mass ratio of epoxy resin to ethylene glycol (1:5 - 7), reaction temperature (180 - 190 °C), and reaction time (12 - 14 h), ensure the full progress of the degradation reaction. The selective cleavage ability of ethylene glycol enables the epoxy resin to be effectively degraded under mild conditions, generating environmentally friendly liquid products. The precisely controlled reaction conditions ensure the efficiency and repeatability of the degradation process and reduce the generation of by-products.

[0019] Laser pretreatment forms a loose and porous structure by damaging the surface film layer of the epoxy resin, significantly increasing its contact area with the degradation reagent, and thus improving the rate of the degradation reaction. The combined action of the optimized laser parameters and the precisely controlled chemical degradation conditions ensures the efficiency and consistency of the entire degradation process. Using ethylene glycol as the degradation reagent, the generated products are environmentally friendly liquids, reducing the environmental pollution problems brought by traditional incineration or landfill methods. The non-contact laser cleaning technology avoids mechanical damage and the introduction of new pollutants, further enhancing the environmental protection performance of the recycling process. The high flexibility and adjustability of the laser cleaning platform enable this method to adapt to different thicknesses and types of epoxy resins, expanding its application range. The combination of the reaction vessel and the temperature control system ensures that the degradation reaction can proceed smoothly under various conditions, improving the adaptability of the process.

[0020] Compared with traditional incineration or landfill methods, this method not only reduces the risk of environmental pollution but also improves the recycling rate of materials, with significant economic benefits. By optimizing laser parameters and reaction conditions, energy consumption and operation complexity are reduced, and the overall treatment cost is lowered.

[0021] The degradation method and device for retired epoxy resin of the present invention achieve an efficient and environmentally friendly epoxy resin degradation process through a combination of laser pretreatment and chemical degradation. Specifically, the laser cleaning platform forms a loose and porous structure conducive to chemical degradation by destroying the surface film layer of the epoxy resin; while the reaction vessel ensures the efficient progress of the degradation reaction by precisely controlling the reaction conditions. These designs work together to significantly improve the degradation rate and cleanliness of the epoxy resin, solving the problems of resource waste and environmental pollution brought about by traditional treatment methods, and having important practical application value.

[0022] Other advantages, objectives, and features of the present invention will be described to some extent in the subsequent specification, and to some extent, based on the study of the following text, will be obvious to those skilled in the art or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of a device for degrading retired epoxy resin of the present invention; Figure 2 It is the experimental product after adding ethylene glycol in Example 1; Figure 3 It is the surface electron microscope image of the retired epoxy resin after pretreatment in Example 1; Figure 4 It is the diagram after the degradation of the retired epoxy resin in Example 1; Figure 5 It is the reaction principle diagram of the degradation reaction in Example 1; The reference numerals in the figure are as follows: left and right moving module 1, handwheel 2, upper crossbeam 3, RTV coating 4, servo motor 5, laser 6, backplane 7, lifting slider 8, lifting lead screw 9, support rod 10, bottom plate 11, leveling foot 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To make the technical solutions, advantages, and objectives of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0025] The present invention provides a method for degrading retired epoxy resin, comprising the following steps: S1. Degradation pretreatment; Using a laser to damage the surface film layer of the retired epoxy resin, so that a loose and porous structure is formed on the surface of the retired epoxy resin, thereby increasing the degradation reaction rate of the retired epoxy resin; The laser cleaning technology increases the contact area between reactants by reconstructing the surface morphology of the sample (retired epoxy resin), thereby increasing the degradation reaction rate of the epoxy resin; the laser cleaning technology has the advantage of non-contact cleaning, which can avoid mechanical damage and the introduction of new pollutants; S2. Degradation; Put the retired epoxy resin pretreated in step S1 into a reaction vessel, and then add a degradation reagent to carry out a degradation reaction, thereby realizing the degradation of the epoxy resin.

[0026] As a preference of this embodiment, the retired epoxy resin in step S1 includes epoxy resin cured by acid anhydride.

[0027] As a preference of this embodiment, the degradation reagent in step S2 includes ethylene glycol, and the retired epoxy resin is added with ethylene glycol for a degradation reaction to decompose into oligomers with active hydroxyl groups.

[0028] As a preference of this embodiment, the conditions for the degradation reaction in step S2 are: The mass ratio of the epoxy resin cured by acid anhydride to ethylene glycol is 1:5-7, the temperature of the degradation reaction is 180-190 °C, and the reaction time of the degradation reaction is 12-14 h.

[0029] As a preference of this embodiment, the conditions for the degradation reaction in step S2 are: The mass ratio of the epoxy resin cured by acid anhydride to ethylene glycol is 1:6, the temperature of the degradation reaction is 180 °C, and the reaction time of the degradation reaction is 12 h.

[0030] As a preference of this embodiment, the time for complete degradation of the retired epoxy resin is not more than 13 h.

[0031] As Figure 1 shown, the present invention also provides a device for degrading retired epoxy resin, comprising a laser cleaning platform and a reaction vessel; A laser 6 is arranged on the laser cleaning platform, and the laser 6 can move freely on the laser cleaning platform. The laser 6 is used to emit a laser to damage the surface film layer of the retired epoxy resin, so that a loose and porous structure is formed on the surface of the retired epoxy resin, thereby increasing the degradation reaction rate of the retired epoxy resin; The laser cleaning platform is also equipped with a scanning electron microscope, which is used to observe the microscopic structure of the surface of retired epoxy resin in the cold state mode; The reaction vessel is used for the degradation reaction of retired epoxy resin.

[0032] As a preference of this embodiment, the laser cleaning platform includes a bottom plate 11. Leveling feet 12 are arranged at the four end corners on the lower side of the bottom plate 11. On the upper surface of the bottom plate 11, a group of support rods 10 are respectively arranged on the left and right sides. Each group of support rods 10 has two support rods 10. A lifting slider 8 is slidably connected to each group of support rods 10. The upper ends of the two groups of support rods 10 are jointly connected with an upper cross beam 3. The left end of the upper cross beam 3 is rotatably connected with a lifting lead screw 9 parallel to the support rod 10. The lifting lead screw 9 is threadedly connected with the corresponding lifting slider 8. The lower end of the lifting lead screw 9 is rotatably connected to the bottom plate 11. The upper end of the lifting lead screw 9 penetrates through the upper cross beam 3 and is fixedly connected with a hand wheel 2. A back plate 7 is fixedly connected between the two lifting sliders 8. A left-right movement module 1 and a servo motor 5 are installed on the back plate 7. The servo motor 5 is used to drive the free end of the left-right movement module 1 to move left and right. The free end of the left-right movement module 1 is fixedly connected with a mounting seat. The laser 6 is arranged on the mounting seat.

[0033] As a preference of this embodiment, the scanning electron microscope is also arranged on the mounting seat.

[0034] As a preference of this embodiment, the reaction vessel is equipped with a temperature control system.

[0035] Among them, the bottom plate 11, as the basic component of the equipment, is used to bear the weights of the various components of the equipment, provide a stable installation plane, and ensure the stable placement of the equipment. The leveling feet 12 are used to adjust the levelness of the equipment, ensure that the equipment is in a horizontal state during operation, and avoid affecting the processing accuracy due to the inclination of the equipment. The support rods 10 are used to provide support for the overall structure of the equipment, enhance the stability of the equipment, and bear part of the weight of the equipment and the forces generated during operation. The upper cross beam 3 is used to ensure the accurate relative positions of the various components, maintain the stable structure of the equipment, and bear a certain weight of the components and working stresses.

[0036] Most of the surfaces of the retired epoxy resin are provided with RTV coatings 4. The RTV coatings 4 usually have functions such as sealing, waterproofing, moisture-proofing, and insulation, preventing the influence of external environmental factors on the cleaning of the epoxy resin and being unfavorable to the degradation of the retired epoxy resin.

[0037] When using the device of the present invention to degrade retired epoxy resin, first place the to-be-treated retired epoxy resin on the bottom plate 11, and then pre-treat the retired epoxy resin, that is, adjust the relative position of the laser 6 through the laser cleaning platform. The laser 6 emits a laser beam to perform laser cleaning on the outer surface of the retired epoxy resin. The surface film layer of the retired epoxy resin is destroyed by the laser, so that a loose and porous structure is formed on the surface of the retired epoxy resin, thereby increasing the degradation reaction rate of the retired epoxy resin. Then put the pre-treated retired epoxy resin into a reaction vessel and add a degradation reagent to carry out a degradation reaction, thereby realizing the degradation of the epoxy resin.

[0038] The process of the laser cleaning platform adjusting the relative position of the laser 6 is as follows: height adjustment, drive the lifting screw rod 9 to rotate through the hand wheel 2. Under the limiting action of the support rod 10, the lifting screw rod converts the rotational motion into a linear motion, driving the integrally connected lifting slider 8 and the back plate 7 to rise or fall along the support rod 10, thereby adjusting the height of the laser 6 to adapt to the processing requirements of epoxy resins at different heights, and at the same time ensuring the smoothness and accuracy of the lifting motion; left and right adjustment, using the servo motor 5 as the driving unit. The servo motor 5 can accurately control the speed, position and torque of the moving parts. The servo motor 5 provides power for the left and right moving module 1. The free end of the left and right moving module 1 is fixedly connected with a mounting seat, and the laser 6 is arranged on the mounting seat, thereby realizing the left and right movement of the laser 6 in the horizontal direction to adjust the position to align with the processing target. Example 1

[0039] Weigh 2.3 g of the retired epoxy resin sample, and use the laser cleaning platform as shown in Figure 1 to carry out degradation pretreatment on the retired epoxy resin sample, that is, clean the surface of the retired epoxy resin.

[0040] Subsequently, add 11.5 g of ethylene glycol solution to the reaction vessel (beaker) according to a mass ratio of 1:5 for mixing (see Figure 2 ), and carry out a degradation reaction at 180 °C to realize the degradation of the retired epoxy resin.

[0041] Figure 3 is the surface SEM image of the retired epoxy resin after pretreatment. It can be seen that laser cleaning can change the surface of the epoxy resin into a loose and porous structure, laying the foundation for the subsequent degradation reaction. Figure 4 is the degraded epoxy resin. It can be seen that it has been completely degraded, and the degradation time is 12 h. Figure 5 is the reaction principle diagram of epoxy resin and ethylene glycol. The active hydrogen of ethylene glycol cuts off the ester bond of the epoxy resin to complete the degradation of the epoxy resin. Example 2

[0042] The difference between this example and Example 1 is that, according to the mass of the retired epoxy resin sample used, the mass ratio is adjusted to 1:6 for adding ethylene glycol, and the remaining processes are the same as those in Example 1.

[0043] For the degradation method provided in this example, it takes 14 h to completely degrade the waste epoxy resin. Example 3

[0044] The difference between this example and Example 1 is that, according to the mass of the retired epoxy resin sample used, the mass ratio is adjusted to 1:7 for adding ethylene glycol, and the remaining processes are the same as those in Example 1.

[0045] For the degradation method provided in this example, it takes 13 h to completely degrade the waste epoxy resin. Example 4

[0046] The difference between this example and Example 1 is that the experimental temperature is adjusted to 185 °C, and the remaining processes are the same as those in Example 1.

[0047] For the degradation method provided in this example, it takes 12.5 h to completely degrade the waste epoxy resin. Example 5

[0048] The difference between this example and Example 1 is that the experimental temperature is adjusted to 190 °C, and the remaining processes are the same as those in Example 1.

[0049] For the degradation method provided in this example, it takes 12.7 h to completely degrade the waste epoxy resin.

[0050] Mass ratio Mass of epoxy resin / g Mass of ethylene glycol / g Experimental temperature / °C Degradation time / h Example 1 1：5 2.3 11.5 180 14 Example 2 1：6 2.4 14.4 180 12 Example 3 1：7 2.1 14.7 180 13 Example 4 1：5 2.2 11 185 12.5 Example 5 1：5 2.05 10.25 190 12.7 In summary, it can be seen that when the mass ratio of the anhydride-cured epoxy resin to ethylene glycol is 1:6 and the temperature is set at 180 °C, the required degradation time is the shortest and the degradation efficiency is the highest. Under these conditions, the surface of the epoxy resin after laser cleaning is loose and porous. After mixing it with ethylene glycol, it can make the epoxy resin fully contact with ethylene glycol, improving the reaction efficiency.

[0051] The pretreatment scheme used in the present invention can form a loose and porous structure on the surface of the traditional anhydride-cured epoxy resin, increasing the contact area between reactants, which helps to better solubilize and disperse the epoxy resin, and also promotes the cross-linking reaction between ethylene glycol and the epoxy resin. Comparative Example 1

[0052] According to the existing alcoholysis process, the waste epoxy insulation resin on the retired electrical equipment was weighed as 2.13 g, and then 10.65 g of ethylene glycol was added to the system, and the degradation reaction was carried out at 180 °C, which took 16 h to achieve degradation.

[0053] It can be seen from the degradation times required in Example 1 and Comparative Example 1 that the degradation technology of the retired epoxy resin for electrical engineering based on lithography-assisted cleaning provided by the present invention has a high degradation efficiency.

[0054] In addition, in another embodiment, the method for screening laser parameters of the present invention includes the following steps: a) Research and find suitable polarized light wavelengths, mainly targeting three wavelengths of 10600 nm, 1064 nm, and 532 nm. The search principle is: high absorption degree of the resin matrix; b) Find suitable and controllable pulse width output lengths to precisely control the surface power and thus precisely control the energy density; c) Research suitable focusing and zoom models (spot shapes) to ensure that the cleaning effect and process are not affected by the unevenness of the resin surface (peeling, adhesion, stacking, fouling, etc.); d) Evaluate the rough structure of the epoxy resin surface after laser treatment, and propose the best laser cleaning treatment process to achieve the rough effect of increasing the surface contact area and improve the swelling and penetration efficiency of the chemical degradation solvent.

[0055] The laser cleaning technology adopted by the present invention can effectively clean the substances attached to the surface of the epoxy resin, and can form a loose and porous structure on the surface of the epoxy resin cured by traditional anhydride, thereby increasing the reaction rate. The degradation method proposed by the present invention not only has a high recovery efficiency, but also realizes the complete degradation of the material under mild conditions, and recovers an environmentally friendly liquid, solving the problems of difficult and slow resin recovery in retired traditional epoxy resins, effectively saving resources, and having practical application value.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the present technical solution, and they should all be covered by the protection scope of the present invention.

Claims

1. A method for degrading retired epoxy resin, characterized in that: The following steps are involved: S1. Degradation pretreatment; The surface film layer of the retired epoxy resin is destroyed by laser, so that a loose porous structure is formed on the surface of the retired epoxy resin; S2. Degradation; The retired epoxy resin pretreated in step S1 is placed in a reaction container, and then a degradation reagent is added to perform a degradation reaction, thereby achieving degradation of the epoxy resin.

2. A method for degrading retired epoxy resin according to claim 1, characterized in that: The retired epoxy resin in step S1 includes anhydride-cured epoxy resin.

3. A method for degrading retired epoxy resin according to claim 2, characterized in that: The degradation agent in step S2 includes ethylene glycol.

4. A method for degrading retired epoxy resin according to claim 3, characterized in that: The conditions for the degradation reaction in step S2 are: The mass ratio of anhydride-cured epoxy resin to ethylene glycol is 1:5-7, the temperature of the degradation reaction is 180-190°C, and the reaction time of the degradation reaction is 12-14h.

5. A method for degrading retired epoxy resin according to claim 4, characterized in that: The conditions for the degradation reaction in step S2 are: The mass ratio of anhydride-cured epoxy resin to ethylene glycol is 1:6, the temperature of the degradation reaction is 180°C, and the reaction time of the degradation reaction is 12h.

6. The method for degrading retired epoxy resin according to claim 1, characterized in that: The time for the retired epoxy resin to be completely degraded is no more than 13 hours.

7. A device for degrading retired epoxy resin, characterized in that: Includes laser cleaning platform and reaction vessel; The laser cleaning platform is provided with a laser, which can move freely on the laser cleaning platform. The laser is used to emit laser to destroy the surface film layer of the retired epoxy resin, so that a loose porous structure is formed on the surface of the retired epoxy resin, thereby increasing the degradation reaction rate of the retired epoxy resin; The laser cleaning platform is also equipped with a scanning electron microscope, which is used to observe the microstructure of the surface of the retired epoxy resin in a cold mode; The reaction container is used for decommissioning epoxy resin to perform degradation reaction.

8. The device for degrading retired epoxy resin according to claim 7, characterized in that: The laser cleaning platform includes a base plate, a leveling foot is arranged on the lower side of the base plate, a group of support rods are respectively arranged at both ends of the upper side of the base plate, each group of support rods is slidably connected with a lifting slider, the upper ends of the two groups of support rods are commonly connected with an upper cross beam, one end of the upper cross beam is rotatably connected with a lifting screw rod which is parallel to the support rod, the lifting screw rod is threadedly connected with the corresponding lifting slider, the lower end of the lifting screw rod is rotatably connected to the base plate, the upper end of the lifting screw rod passes through the upper cross beam and is fixedly connected with a hand wheel, a back plate is fixedly connected between the two lifting sliders, a left and right moving module and a servo motor are installed on the back plate, the servo motor is used to drive the free end of the left and right moving module to move left and right, the free end of the left and right moving module is fixedly connected with a mounting seat, and the laser is arranged on the mounting seat.

9. The device for degrading retired epoxy resin according to claim 8, characterized in that: The scanning electron microscope is also arranged on a mounting base.

10. The device for degrading retired epoxy resin according to claim 9, characterized in that: The reaction container is equipped with a temperature control system.

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