High-adhesion thermosetting acrylic UV viscosity-reducing adhesive tape and preparation method thereof

Abstract

The invention relates to a high-adhesion thermosetting acrylic UV (ultraviolet) viscosity-reducing adhesive tape and a preparation method thereof. The high-adhesion thermosetting acrylic UV viscosity-reducing adhesive tape comprises a pressure-sensitive adhesive layer and a base material layer, the pressure-sensitive adhesive layer is prepared from the following components: 50 to 60 parts of 2-ethylhexyl acrylate, 20 to 30 parts of butyl acrylate, 10 to 20 parts of methyl methacrylate, 5 to 10 parts of acrylic acid, 0.5 to 2 parts of dibenzoyl peroxide, 10 to 20 parts of epoxy acrylate copolymer, 2 to 5 parts of tackifying resin, 1 to 2 parts of curing agent, 1 to 3 parts of photoinitiator, 0.1 to 0.5 part of antistatic agent, 70 to 90 parts of ethyl acetate and 40 to 60 parts of methylbenzene. The UV viscosity-reducing adhesive tape has the effect of improving the initial peel strength of the UV viscosity-reducing adhesive tape.

Description

Technical Field

[0001] The present application relates to the field of UV anti-viscosity tape preparation technology, and in particular to a high-adhesion thermosetting acrylic UV anti-viscosity tape and a preparation method thereof. Background Art

[0002] In the electronics industry, pressure-sensitive adhesives (PSAs) are mostly used in ultra-thin electronic device processing, wafer cutting and other processes. During use, high adhesion must be maintained to facilitate processing while avoiding damage to ultra-thin electronic devices during operation. After processing, PSA can be easily peeled off from electronic devices through viscosity reduction. The current viscosity reduction methods mainly include thermal responsive viscosity reduction, degradation-type viscosity reduction, water-responsive viscosity reduction and UV viscosity reduction.

[0003] Thermal responsive viscosity reduction is achieved by introducing heat-expandable microspheres into the pressure-sensitive adhesive polymer to reduce the bonding area and peel force at high temperatures. The synthesis steps of this type of pressure-sensitive adhesive are simple, but there is a risk of damaging electronic devices when the temperature is too high. Degradation-type viscosity reduction is achieved by exposing the pressure-sensitive adhesive to light or heat, degrading it into small molecules and reducing the peel force. It has the characteristics of good degradation effect, but slow speed, low efficiency, and easy generation of volatile gases. Water-responsive viscosity reduction is achieved by mixing amphiphilic oligomers with acrylic copolymers. When applied, amphiphilic oligomers form hydrogen bonds with water, weakening the hydrogen bonding force between the pressure-sensitive adhesive and the adhered object, destroying the cohesion and adhesion of the adhesive layer, and reducing the peel force. This type of pressure-sensitive adhesive has the advantage of being reusable, but is limited by application conditions. UV viscosity reduction introduces light-responsive monomers. Under light of a certain wavelength, the photoinitiator attacks the C=C and epoxy groups in the system, triggering rapid cross-linking of oligomers or monomers, and forming a dense network structure with the linear polymer molecular chains after heat curing. After cross-linking, the adhesive layer shrinks in volume, the contact area with the adhered object is reduced, and the adhesion between the pressure-sensitive adhesive and the adhered object is reduced. At the same time, the modulus increases and the wetting performance decreases, effectively achieving the effect of reducing viscosity. UV viscosity reduction has the advantages of fast curing speed, high efficiency, clean and environmentally friendly, easy operation, and low energy consumption.

[0004] At present, the initial peel force of UV anti-adhesion tape is generally low and cannot meet the application requirements of high adhesion. Summary of the invention

[0005] In order to improve the initial peel strength of the UV anti-tack tape, the present application provides a high-adhesion thermosetting acrylic UV anti-tack tape and a preparation method thereof.

[0006] The present application provides a high-adhesion thermosetting acrylic UV anti-viscosity tape and a preparation method thereof using the following technical solutions: In the first aspect, the present application provides a high-adhesion thermosetting acrylic UV anti-tack tape, which adopts the following technical scheme: a high-adhesion thermosetting acrylic UV anti-tack tape, comprising a pressure-sensitive adhesive layer and a substrate layer, wherein the pressure-sensitive adhesive layer comprises the following components by weight: 50-60 parts of isooctyl acrylate, 20-30 parts of butyl acrylate, 10-20 parts of methyl methacrylate, 5-10 parts of acrylic acid, 0.5-2 parts of dibenzoyl peroxide, 10-20 parts of epoxy acrylate copolymer, 2-5 parts of tackifying resin, 1-2 parts of curing agent, 1-3 parts of photoinitiator, 0.1-0.5 parts of antistatic agent, 70-90 parts of ethyl acetate, and 40-60 parts of toluene.

[0007] Preferably, the pressure-sensitive adhesive layer includes 53 parts of isooctyl acrylate, 25 parts of butyl acrylate, 13 parts of methyl methacrylate, 9 parts of acrylic acid, 0.8 parts of dibenzoyl peroxide, 15 parts of epoxy acrylate copolymer, 3-5 parts of tackifying resin, 1 part of curing agent, 1.7 parts of photoinitiator, 0.3 parts of antistatic agent, 86 parts of ethyl acetate and 54 parts of toluene.

[0008] Preferably, the substrate layer comprises 50PET, and the thickness of the pressure-sensitive adhesive layer is 25 μm.

[0009] In a second aspect, the present application provides a method for preparing a high-adhesion thermosetting acrylic UV adhesive tape, using the following technical solution: A method for preparing a high-adhesion thermosetting acrylic UV anti-viscosity tape comprises the following steps: S1. Preparation of acrylic adhesive APMG: The solution polymerization was adopted, and toluene, ethyl acetate solution and a part of dibenzoyl peroxide were added to a reactor filled with nitrogen. When the system was heated to 80°C, methyl methacrylate and butyl acrylate were added, and the reaction was carried out by heat preservation. Then, isooctyl acrylate, acrylic acid, toluene, ethyl acetate and the remaining dibenzoyl peroxide were added, and the reaction was continued by heat preservation after heating. Then, the material was cooled and discharged to obtain a light yellow viscous acrylic adhesive APMG. S2. Preparation of high-adhesion thermosetting acrylic UV viscosity-reducing adhesive: Add epoxy acrylic copolymer, tackifying resin, isocyanate curing agent, ethyl acetate and the acrylic adhesive APMG prepared above into a stirring tank and stir, then add curing agent, photoinitiator, antistatic agent and toluene, continue stirring, and store in the dark to obtain a high-adhesion thermosetting acrylic UV viscosity-reducing adhesive; S3. Preparation of high-adhesion thermosetting acrylic UV adhesive tape: The highly adhesive thermosetting acrylic UV anti-viscosity adhesive prepared above was evenly coated on PET using an applicator, cured at 85° C. for 2-5 min, and stored away from light after aging to obtain a highly adhesive thermosetting acrylic UV anti-viscosity adhesive tape.

[0010] Preferably, the polymerization reaction formula of the acrylic adhesive APMG is:

[0011] Preferably, the tackifying resin includes any one of rosin glycerol ester, rosin pentaerythritol ester, polymerized rosin, hydrogenated rosin, and disproportionated rosin.

[0012] Preferably, the curing agent includes any one of isophorone diisocyanate and hexamethylene diisocyanate.

[0013] Preferably, the photoinitiator comprises any one of trimethylbenzoyldiphenylphosphine oxide and diaryliodonium hexafluoroantimonate or a mixture of the two.

[0014] Preferably, the antistatic agent comprises lithium bis(trifluoromethylsulfonyl)imide.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. This application adopts a solution method to prepare an acrylic adhesive, and the synthesis steps are simple. By introducing a tackifying resin and an epoxy acrylic copolymer as a pre-UV plasticizer, the peeling force can be synergistically improved, which is suitable for high-adhesion application scenarios; 2. The combination of free radical and cationic photoinitiators greatly improves the viscosity reduction efficiency. After rapid irradiation with ultraviolet light, the adhesive layer quickly cross-links to form a semi-interpenetrating network structure. The adhesive layer system shrinks, the contact area is reduced, and the peeling force is significantly reduced, which improves the lossless peeling effect of ultra-thin electronic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the infrared spectrum of the acrylic adhesive APMG in Example 1.

[0017] Figure 2 This is the infrared spectrum of the high-adhesion tape Com-1 in Example 1 before and after UV.

[0018] Figure 3 This is the infrared spectrum of the high-adhesion tape Com-2 in Example 2 before and after UV.

[0019] Figure 4 This is the infrared spectrum of the high-adhesion tape Com-3 in Example 3 before and after UV.

[0020] Figure 5 This is the infrared spectrum of the high-adhesion tape Com-4 in Example 4 before and after UV.

[0021] Figure 6 This is the infrared spectrum of the high-adhesion tape Com-8 before and after UV in Example 5. DETAILED DESCRIPTION

[0022] The present application is further described in detail below with reference to the embodiments: Raw materials description: All raw materials in the examples can be obtained commercially; Example 1 Preparation of high-adhesion thermosetting acrylic UV adhesive tape: S1. Preparation of acrylic adhesive APMG: The solution polymerization was adopted, 0.4 parts of dibenzoyl peroxide, 25 parts of toluene and 50 parts of ethyl acetate solution were added to a reactor which was ventilated with nitrogen and equipped with a thermometer and a reflux device, and when the system was heated to 80°C, 13 parts of methyl methacrylate and 23 parts of butyl acrylate were added, and the reaction was kept warm for 1 hour, 53 parts of isooctyl acrylate, 9 parts of acrylic acid, 9 parts of toluene, 18 parts of ethyl acetate and the remaining 0.8 parts of dibenzoyl peroxide were added to the system through a constant pressure dropping funnel, and the temperature was raised to 85°C and the reaction was kept warm for 4 hours, and then the material was cooled and discharged to obtain a light yellow viscous acrylic adhesive APMG; S2. Preparation of high-adhesion thermosetting acrylic UV viscosity-reducing adhesive: 15 parts of epoxy acrylate copolymer, 3 parts of tackifying resin, 18 parts of ethyl acetate and 85 parts of the acrylic adhesive APMG prepared above were added into a stirring tank, stirred at a speed of 500 r / min for 30 minutes, and then 1 part of curing agent, 1.2 parts of photoinitiator, 0.3 parts of antistatic agent and 20 parts of toluene were slowly added, and the mixture was stirred for 15 minutes and stored away from light to obtain a high-adhesion thermosetting acrylic UV viscosity-reducing adhesive; S3. Preparation of high-adhesion thermosetting acrylic UV adhesive tape: The high-adhesion thermosetting acrylic UV anti-viscosity adhesive prepared above was evenly coated on 50PET using a coater with a thickness of 25 μm. It was cured at 85°C for 3 minutes and then aged at 60°C for 12 hours. It was stored away from light to obtain a high-adhesion thermosetting acrylic UV anti-viscosity tape.

[0023] Wherein, in step S2, the tackifying resin is disproportionated rosin, the curing agent is isophorone diisocyanate, the photoinitiator is trimethylbenzoyl diphenylphosphine oxide, and the antistatic agent is lithium bis(trifluoromethylsulfonyl)imide.

[0024] Example 2 Preparation of high-adhesion thermosetting acrylic UV adhesive tape: S1. Preparation of acrylic adhesive APMG: The solution polymerization was adopted, 0.4 parts of dibenzoyl peroxide, 25 parts of toluene and 50 parts of ethyl acetate solution were added to a reactor which was ventilated with nitrogen and equipped with a thermometer and a reflux device, and when the system was heated to 80°C, 13 parts of methyl methacrylate and 23 parts of butyl acrylate were added, and the reaction was kept warm for 1 hour, 53 parts of isooctyl acrylate, 9 parts of acrylic acid, 9 parts of toluene, 18 parts of ethyl acetate and the remaining 0.8 parts of dibenzoyl peroxide were added to the system through a constant pressure dropping funnel, and the temperature was raised to 85°C and the reaction was kept warm for 4 hours, and then the material was cooled and discharged to obtain a light yellow viscous acrylic adhesive APMG; S2. Preparation of high-adhesion thermosetting acrylic UV viscosity-reducing adhesive: 15 parts of epoxy acrylate copolymer, 2 parts of tackifying resin, 18 parts of ethyl acetate and 85 parts of the acrylic adhesive APMG prepared above were added into a stirring tank, stirred at a speed of 500 r / min for 30 minutes, and then 1 part of isophorone diisocyanate, 0.5 parts of photoinitiator, 0.3 parts of lithium bis(trifluoromethylsulfonyl)imide and 20 parts of toluene were slowly added, and the mixture was stirred for 15 minutes and stored away from light to obtain a high-adhesion thermosetting acrylic UV viscosity-reducing adhesive; S3. Preparation of high-adhesion thermosetting acrylic UV adhesive tape: The high-adhesion thermosetting acrylic UV anti-viscosity adhesive prepared above was evenly coated on 50PET using a coater with a thickness of 25 μm. It was cured at 85°C for 3 minutes and then aged at 60°C for 12 hours. It was stored away from light to obtain a high-adhesion thermosetting acrylic UV anti-viscosity tape.

[0025] Wherein, in step S2, the tackifying resin is rosin pentaerythritol ester, the curing agent is isophorone diisocyanate, the photoinitiator is diaryliodonium hexafluoroantimonate, and the antistatic agent is lithium bis(trifluoromethylsulfonyl)imide.

[0026] Example 3 Preparation of high-adhesion thermosetting acrylic UV adhesive tape: S1. Preparation of acrylic adhesive APMG: The solution polymerization was adopted, 0.4 parts of dibenzoyl peroxide, 25 parts of toluene and 50 parts of ethyl acetate solution were added to a reactor which was ventilated with nitrogen and equipped with a thermometer and a reflux device, and when the system was heated to 80°C, 13 parts of methyl methacrylate and 23 parts of butyl acrylate were added, and the reaction was kept warm for 1 hour, 53 parts of isooctyl acrylate, 9 parts of acrylic acid, 9 parts of toluene, 18 parts of ethyl acetate and the remaining 0.8 parts of dibenzoyl peroxide were added to the system through a constant pressure dropping funnel, and the temperature was raised to 85°C and the reaction was kept warm for 4 hours, and then the material was cooled and discharged to obtain a light yellow viscous acrylic adhesive APMG; S2. Preparation of high-adhesion thermosetting acrylic UV viscosity-reducing adhesive: 15 parts of epoxy acrylate copolymer, 3 parts of tackifying resin, 18 parts of ethyl acetate and 85 parts of the acrylic adhesive APMG prepared above were added into a stirring tank, stirred at a speed of 500 r / min for 30 minutes, and then 1 part of curing agent, 1.7 parts of photoinitiator, 0.3 parts of antistatic agent and 20 parts of toluene were slowly added, and the mixture was stirred for 15 minutes and stored away from light to obtain a high-adhesion thermosetting acrylic UV viscosity-reducing adhesive; S3. Preparation of high-adhesion thermosetting acrylic UV adhesive tape: The high-adhesion thermosetting acrylic UV anti-viscosity adhesive prepared above was evenly coated on 50PET using a coater with a thickness of 25 μm. It was cured at 85°C for 3 minutes and then aged at 60°C for 12 hours. It was stored away from light to obtain a high-adhesion thermosetting acrylic UV anti-viscosity tape.

[0027] Wherein, in step S2, the tackifying resin is polymerized rosin, the curing agent is isophorone diisocyanate, the photoinitiator is a mixture of 1.2 parts of trimethylbenzoyldiphenylphosphine oxide and 0.5 parts of diaryliodonium hexafluoroantimonate, and the antistatic agent is lithium bis(trifluoromethylsulfonyl)imide.

[0028] Example 4 Preparation of high-adhesion thermosetting acrylic UV adhesive tape: S1. Preparation of acrylic adhesive APMG: The solution polymerization was adopted, 0.4 parts of dibenzoyl peroxide, 25 parts of toluene and 50 parts of ethyl acetate solution were added to a reactor which was ventilated with nitrogen and equipped with a thermometer and a reflux device, and when the system was heated to 80°C, 13 parts of methyl methacrylate and 23 parts of butyl acrylate were added, and the reaction was kept warm for 1 hour, 53 parts of isooctyl acrylate, 9 parts of acrylic acid, 9 parts of toluene, 18 parts of ethyl acetate and the remaining 0.8 parts of dibenzoyl peroxide were added to the system through a constant pressure dropping funnel, and the temperature was raised to 85°C and the reaction was kept warm for 4 hours, and then the material was cooled and discharged to obtain a light yellow viscous acrylic adhesive APMG; S2. Preparation of high-adhesion thermosetting acrylic UV viscosity-reducing adhesive: 15 parts of epoxy acrylate copolymer, 5 parts of tackifying resin, 18 parts of ethyl acetate and 85 parts of the acrylic adhesive APMG prepared above were added into a stirring tank, stirred at a speed of 500 r / min for 30 minutes, and then 1 part of curing agent, 1.7 parts of photoinitiator, 0.3 parts of antistatic agent and 20 parts of toluene were slowly added, and the mixture was stirred for 15 minutes and stored away from light to obtain a high-adhesion thermosetting acrylic UV viscosity-reducing adhesive; S3. Preparation of high-adhesion thermosetting acrylic UV adhesive tape: The high-adhesion thermosetting acrylic UV anti-viscosity adhesive prepared above was evenly coated on 50PET using a coater with a thickness of 25 μm. It was cured at 85°C for 3 minutes and then aged at 60°C for 12 hours. It was stored away from light to obtain a high-adhesion thermosetting acrylic UV anti-viscosity tape.

[0029] Wherein, in step S2, the tackifying resin is hydrogenated rosin, the curing agent is isophorone diisocyanate, the photoinitiator is a mixture of 1.2 parts of trimethylbenzoyldiphenylphosphine oxide and 0.5 parts of diaryliodonium hexafluoroantimonate, and the antistatic agent is lithium bis(trifluoromethylsulfonyl)imide.

[0030] Example 5 Preparation of high-adhesion thermosetting acrylic UV adhesive tape: S1. Preparation of acrylic adhesive APMG: The solution polymerization was adopted, 0.4 parts of dibenzoyl peroxide, 25 parts of toluene and 50 parts of ethyl acetate solution were added to a reactor which was ventilated with nitrogen and equipped with a thermometer and a reflux device, and when the system was heated to 80°C, 13 parts of methyl methacrylate and 23 parts of butyl acrylate were added, and the reaction was kept warm for 1 hour, 53 parts of isooctyl acrylate, 9 parts of acrylic acid, 9 parts of toluene, 18 parts of ethyl acetate and the remaining 0.8 parts of dibenzoyl peroxide were added to the system through a constant pressure dropping funnel, and the temperature was raised to 85°C and the reaction was kept warm for 4 hours, and then the material was cooled and discharged to obtain a light yellow viscous acrylic adhesive APMG; S2. Preparation of high-adhesion thermosetting acrylic UV viscosity-reducing adhesive: 15 parts of epoxy acrylate copolymer, 4 parts of tackifying resin, 18 parts of ethyl acetate and 85 parts of the acrylic adhesive APMG prepared above were added into a stirring tank, stirred at a speed of 500 r / min for 30 minutes, and then 1 part of curing agent, 1.7 parts of photoinitiator, 0.3 parts of antistatic agent and 20 parts of toluene were slowly added, and the mixture was stirred for 15 minutes and stored away from light to obtain a high-adhesion thermosetting acrylic UV viscosity-reducing adhesive; S3. Preparation of high-adhesion thermosetting acrylic UV adhesive tape: The high-adhesion thermosetting acrylic UV anti-viscosity adhesive prepared above was evenly coated on 50PET using a coater with a thickness of 25 μm. It was cured at 85°C for 3 minutes and then aged at 60°C for 12 hours. It was stored away from light to obtain a high-adhesion thermosetting acrylic UV anti-viscosity tape.

[0031] Wherein, in step S2, the tackifying resin is disproportionated rosin, the curing agent is isophorone diisocyanate, the photoinitiator is a mixture of 1.2 parts of trimethylbenzoyldiphenylphosphine oxide and 0.5 parts of diaryliodonium hexafluoroantimonate, and the antistatic agent is lithium bis(trifluoromethylsulfonyl)imide.

[0032] Performance testing The high-adhesion thermosetting acrylic UV adhesive tapes prepared in Examples 1-5 were subjected to the following performance tests: Front and rear peel force test: The samples in the examples were tested according to GB / T 2792-2014 Test method for peel strength of adhesive tapes, wherein a timed air-cooled LED UV lamp was used to provide UV.

[0033] Table 1 Test results of the anti-viscosity tape of samples of Examples 1-5 Combined with Table 1, it can be seen that the rosin-based tackifying resin has good compatibility with the acrylic adhesive prepared in this application and exhibits high peel strength. An appropriate amount of tackifying resin can serve as the dispersed phase of the system, enrich on the surface of the pressure-sensitive adhesive layer, reduce the surface energy of the adhesive layer, improve the wettability of the pressure-sensitive adhesive layer to the surface energy of the low adhesive layer, and improve the adhesion. On the other hand, the tackifying resin can assist in improving the polarity of the pressure-sensitive adhesive layer system and improve the adhesion to the object being adhered.

[0034] It can be seen from Table 1 that with the increase of UV energy, the peel strength decreases significantly and drops below 10 gf / in, indicating that the combined use of free radical and cationic initiators in the system greatly improves the viscosity reduction effect.

[0035] Depend on Figure 2 It can be seen that 2969cm -1 and 2942cm -1 The symmetrical stretching vibration peak of -CH3 and -CH2 is 2878cm -1 and 2850cm -1 The peaks at 1734cm are the asymmetric stretching vibration peaks of -CH3 and -CH2. -1 The stretching vibration absorption peak of C=O in the ester group is 1448 cm -1 It is the bending vibration peak of -CH2, 1375cm -1 It is the symmetrical deformation vibration peak of -CH3, 1233cm -1 and 1159cm -1 The peak at 1045 cm is the asymmetric stretching vibration peak of -COC-. -1 The peak is the symmetrical stretching vibration peak of -COC-.

[0036] Depend on Figures 3 to 6 It can be seen that after UV, the absorption peaks of -OH, -CH3, -CH2, and -COC- are enhanced, indicating that the composite photoinitiator attacks C=C and epoxy groups, inducing crosslinking.

[0037] This specific embodiment is only an explanation of the present application, and it is not a limitation of the present application. Through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of ​​the present application. The technical scope of the present application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A high-adhesion thermosetting acrylic UV adhesive tape, comprising a pressure-sensitive adhesive layer and a substrate layer, characterized in that: The pressure-sensitive adhesive layer comprises the following components by weight: 50-60 parts of isooctyl acrylate, 20-30 parts of butyl acrylate, 10-20 parts of methyl methacrylate, 5-10 parts of acrylic acid, 0.5-2 parts of dibenzoyl peroxide, 10-20 parts of epoxy acrylate copolymer, 2-5 parts of tackifying resin, 1-2 parts of curing agent, 1-3 parts of photoinitiator, 0.1-0.5 parts of antistatic agent, 70-90 parts of ethyl acetate and 40-60 parts of toluene.

2. The high-adhesion thermosetting acrylic UV adhesive tape according to claim 1, characterized in that: The pressure-sensitive adhesive layer includes 53 parts of isooctyl acrylate, 25 parts of butyl acrylate, 13 parts of methyl methacrylate, 9 parts of acrylic acid, 0.8 parts of dibenzoyl peroxide, 15 parts of epoxy acrylate copolymer, 3-5 parts of tackifying resin, 1 part of curing agent, 1.7 parts of photoinitiator, 0.3 parts of antistatic agent, 86 parts of ethyl acetate and 54 parts of toluene.

3. The high-adhesion thermosetting acrylic UV adhesive tape according to claim 1, characterized in that: The substrate layer includes 50PET, and the thickness of the pressure-sensitive adhesive layer is 25 μm.

4. A method for preparing the high-adhesion thermosetting acrylic UV anti-viscosity tape according to any one of claims 1 to 3, characterized in that: The steps include: S1. Preparation of acrylic adhesive APMG: The solution polymerization was adopted, and toluene, ethyl acetate solution and a part of dibenzoyl peroxide were added to a reactor filled with nitrogen. When the system was heated to 80°C, methyl methacrylate and butyl acrylate were added, and the reaction was carried out by heat preservation. Then, isooctyl acrylate, acrylic acid, toluene, ethyl acetate and the remaining dibenzoyl peroxide were added, and the reaction was continued by heat preservation after heating. Then, the material was cooled and discharged to obtain a light yellow viscous acrylic adhesive APMG. S2. Preparation of high-adhesion thermosetting acrylic UV viscosity-reducing adhesive: Add epoxy acrylic copolymer, tackifying resin, ethyl acetate and the acrylic adhesive APMG prepared above into a stirring tank and stir, then add curing agent, photoinitiator, antistatic agent and toluene, continue stirring, and store in the dark to obtain a high-adhesion thermosetting acrylic UV viscosity-reducing adhesive; S3. Preparation of high-adhesion thermosetting acrylic UV adhesive tape: The highly adhesive thermosetting acrylic UV anti-viscosity adhesive prepared above was evenly coated on PET using an applicator, cured at 85° C. for 2-5 min, and stored away from light after aging to obtain a highly adhesive thermosetting acrylic UV anti-viscosity adhesive tape.

5. The method for preparing a high-adhesion thermosetting acrylic UV adhesive tape according to claim 4, characterized in that: The polymerization reaction formula of the acrylic adhesive APMG is:

6. The method for preparing a high-adhesion thermosetting acrylic UV adhesive tape according to claim 4, characterized in that: The tackifying resin includes any one of rosin glycerol ester, rosin pentaerythritol ester, polymerized rosin, hydrogenated rosin, and disproportionated rosin.

7. The method for preparing a high-adhesion thermosetting acrylic UV adhesive tape according to claim 4, characterized in that: The curing agent includes any one of isophorone diisocyanate and hexamethylene diisocyanate.

8. The method for preparing a high-adhesion thermosetting acrylic UV adhesive tape according to claim 4, characterized in that: The photoinitiator includes any one of trimethylbenzoyldiphenylphosphine oxide and diaryliodonium hexafluoroantimonate or a mixture of the two.

9. The method for preparing a high-adhesion thermosetting acrylic UV adhesive tape according to claim 4, characterized in that: The antistatic agent includes lithium bis(trifluoromethylsulfonyl)imide.

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