A dynamic balancing UV adhesive and its preparation method and application

Abstract

The present invention belongs to the technical field of adhesives, and specifically relates to a dynamic balancing UV adhesive, a preparation method thereof, and an application thereof. The adhesive comprises the following components by weight: 10-30 parts of polyurethane-containing carbon-carbon double bond acrylic resin, 10-30 parts of carbon-carbon double bond-containing acrylate monomer, 0.2-3 parts of photoinitiator, 40-60 parts of inorganic salt, and 0.1-1 parts of leveling agent. The dynamic balancing UV adhesive prepared by the present invention utilizes the carbon-carbon double bonds of the acrylic resin body to undergo polymerization and cross-linking after UV irradiation. Through rapid cross-linking with the acrylic resin, the density range is 1.5-3.1 g / cm 3 , forming an interpenetrating structure with inorganic salts, which can reduce the amount of glue used when balancing electronic fans and increase the surface drying time (1-3 seconds), thereby achieving automatic dynamic balancing of electronic fan products.

Description

Technical Field

[0001] The present invention belongs to the technical field of adhesives, and in particular relates to a dynamic balancing UV adhesive and a preparation method and application thereof. Background Art

[0002] Dynamic balancing UV adhesive is extruded through dispensing equipment. After a short period of UV irradiation of 1-3 seconds, it has high adhesion, good adhesion, complete curing (depth), and good weather resistance. It can be applied by an automated dispensing machine, so it is used in the dynamic balancing process manufacturing process of electronic fans and other products.

[0003] However, the main dynamic balancing adhesive material currently on the market is balancing mud, which is difficult to control in dosage and cannot be used to automatically complete the dynamic balancing of electronic fans on a large scale. Most dynamic balancing UV adhesives on the market are based on ordinary acrylic polymer adhesives. Due to limited compatibility in the system and problems such as the addition of inorganic salts, the adhesive density, bonding strength, cure depth, weather resistance, and surface drying time have more or less defects. The dispensing equipment is prone to clogging during the dispensing process and has a long curing surface drying time, making it impossible to meet the requirements of large-scale automated dynamic balancing operations for electronic fans. Currently, the initial tack and cohesion of the adhesive tape are improved by controlling the appropriate weight-average molecular weight of the prepared resin; and the preparation of UV adhesives that are easy to automatically apply is achieved by selecting inorganic salts with appropriate particle sizes. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a dynamic balance UV adhesive and its preparation method. The present invention synthesizes a functional acrylic resin with a specific molecular weight distribution, and mixes it with acrylic monomer, photoinitiator, curing cross-linking agent and inorganic salt in a certain proportion to obtain a UV adhesive with a density of 1.5-3.1 g / cm 3 , high adhesion after UV irradiation, fast surface drying, complete curing, good weather resistance, and no clogging of the dispensing machine needle.

[0005] In order to solve the above-mentioned technical problems, this application provides the following technical solutions:

[0006] The present invention provides a dynamic balancing UV adhesive, which comprises the following components in parts by weight: 10-30 parts of polyurethane-containing carbon-carbon double bond acrylic resin, 10-30 parts of carbon-carbon double bond-containing acrylate monomer, 0.2-3 parts of photoinitiator, 40-60 parts of inorganic salt and 0.1-1 part of leveling agent;

[0007] The reaction raw materials of the polyurethane carbon-carbon double bond acrylic resin include the following components by weight: 30-85 parts of monomer, 5-15 parts of functional monomer, 6-25 parts of functional monomer containing active hydroxyl group, 0.02-0.5 parts of initiator, 0.01-0.5 parts of catalyst and 5-30 parts of isocyanate; the isocyanate is selected from ethyl isocyanate acrylate;

[0008] The monomer is selected from one or more of methyl acrylate, butyl acrylate, isooctyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate and morpholine acrylate; the functional monomer is selected from one or more of acrylic acid, methacrylic acid, N-hydroxymethyl acrylamide, glycidyl acrylate and N,N-dimethyl acrylamide; the functional monomer containing active hydroxyl group is selected from one or more of hydroxyethyl acrylate, hydroxypropyl acrylate and hydroxybutyl acrylate.

[0009] Preferably, the preparation method of the polyurethane-containing carbon-carbon double bond acrylic resin comprises the following steps:

[0010] S21: In a nitrogen atmosphere, 30-85 parts by weight of a monomer, 5-15 parts of a functional monomer, and 6-25 parts of a functional monomer containing an active hydroxyl group are mixed and heated to 60-70° C. to obtain a mixture;

[0011] S22: adding 0.02-0.5 parts of an initiator to the reaction mixture, reacting at 76-90° C. for 2-8 hours, and then cooling to 40-60° C. to obtain an intermediate product;

[0012] S23: adding 0.01-0.5 parts of a catalyst and 5-30 parts of isocyanate to the intermediate product, and reacting for 2-6 hours to obtain the polyurethane-containing carbon-carbon double bond acrylic resin.

[0013] Furthermore, the structural formula of the polyurethane-containing carbon-carbon double bond acrylic resin is selected from the following:

[0014] 、 、 、 、 .

[0015] Preferably, in the reaction raw materials of the polyurethane-containing carbon-carbon double bond acrylic resin, the initiator is selected from azobisisobutyronitrile or benzoyl peroxide.

[0016] Preferably, the carbon-carbon double bond-containing acrylate monomer is selected from one or both of acryloylmorpholine and methyl acrylate.

[0017] Furthermore, the mass ratio of acryloylmorpholine to methyl acrylate is 5:7-10.

[0018] Preferably, the polyurethane-containing carbon-carbon double bond acrylic resin has a weight average molecular weight of 10,000 to 80,000, a glass transition temperature of -50 to -20°C, and a carbon-carbon double bond content of 0.1 to 3 mmol / g.

[0019] Preferably, the catalyst is selected from one or more of dioctyltin laurate, dibutyltin dilaurate, bismuth chloride and bismuth oxide;

[0020] The photoinitiator is selected from one or more of benzil dimethyl ether, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide; the inorganic salt is selected from one or more of barium nitrate, barium titanate, barium sulfate, bismuth nitrate and bismuth sulfate.

[0021] Preferably, the leveling agent is one of BYK-302, BYK-306 and BYK-333, or a mixture thereof.

[0022] The present invention also provides a method for preparing the above-mentioned dynamic balancing UV adhesive, comprising the following steps:

[0023] S31: In a nitrogen atmosphere, 10-30 parts by weight of a polyurethane-containing carbon-carbon double bond acrylic resin, 10-30 parts of a carbon-carbon double bond acrylic ester monomer, and 0.2-3 parts of a photoinitiator are heated to 75-85° C. and mixed for 1-3 hours to obtain a mixed resin solution;

[0024] S32: cooling the mixed resin liquid to 45-55° C., adding 40-60 parts of an inorganic salt and 0.1-1 part of a leveling agent, and stirring for 2-3 hours to obtain the dynamic balancing UV adhesive;

[0025] The present invention also provides an application of the dynamic balancing UV adhesive, wherein the dynamic balancing UV adhesive is irradiated with ultraviolet light (UV) and has a surface drying time of 1-3 seconds.

[0026] The technical solution of the present invention has the following advantages over the prior art:

[0027] The dynamic balancing UV adhesive prepared by the present invention utilizes the carbon-carbon double bonds of the acrylic resin to undergo polymerization and cross-linking after UV irradiation. Through rapid cross-linking with the acrylic resin, the density range is 1.5-3.1 g / cm 3 , forming an interpenetrating structure with inorganic salts, which can reduce the amount of glue used in the dynamic balancing of electronic fans and at the same time increase the surface drying time (1-3 seconds), thereby realizing the automatic dynamic balancing of electronic fan products. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1The density after curing in Example 2 is 2.07 g / cm 3 Application diagram of UV adhesive for dynamic balancing of electronic fans. DETAILED DESCRIPTION

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0031] Standard sample example

[0032] 1. The synthesis of polyurethane-containing carbon-carbon double bond acrylic resin 1 comprises the following steps:

[0033] (1) 40 parts of isooctyl acrylate, 30 parts of butyl acrylate, 15 parts of methyl methacrylate, 10 parts of hydroxyethyl acrylate, 5 parts of N,N-dimethylacrylamide and 100 parts of ethyl acetate were mixed evenly, stirred and heated to 66°C under nitrogen atmosphere, 0.02 parts of azobisisobutyronitrile as initiator were added, and the temperature was kept for 2 hours. Then 0.01 parts of azobisisobutyronitrile as initiator were added, the temperature was raised to 80°C, the temperature was kept for 2 hours, and the temperature was lowered to 40°C.

[0034] (2) 0.02 parts of dibutyltin dilaurate were added to the reaction solution after treatment in step (1), the nitrogen flow was stopped, and a mixture of 12.15 parts of ethyl isocyanate acrylate and 12.15 parts of ethyl acetate was added dropwise to the reaction solution over half an hour under stirring. The mixture was kept warm for 6 hours, cooled and discharged to obtain polyurethane carbon-carbon double bond-containing acrylic resin 1. The following is a schematic diagram of the synthesis route of polyurethane carbon-carbon double bond-containing acrylic resin 1.

[0035]

[0036] 2. The synthesis of polyurethane-containing carbon-carbon double bond acrylic resin 2 comprises the following steps:

[0037] (1) 30 parts of isooctyl acrylate, 35 parts of butyl acrylate, 10 parts of methyl methacrylate, 5 parts of acrylic acid, 15 parts of hydroxyethyl acrylate, 5 parts of N,N-dimethylacrylamide and 100 parts of ethyl acetate were mixed evenly, stirred and heated to 66°C under nitrogen atmosphere, 0.02 parts of azobisisobutyronitrile as initiator were added, and the temperature was kept for 2 hours. Then 0.01 parts of azobisisobutyronitrile as initiator were added, the temperature was raised to 80°C, the temperature was kept for 2 hours, and the temperature was lowered to 40°C.

[0038] (2) 0.03 parts of dibutyltin dilaurate was added to the reaction solution after treatment in step (1), and the nitrogen flow was stopped. Under stirring conditions, 18.23 parts of a mixture of ethyl isocyanate acrylate and 18.23 parts of ethyl acetate was added dropwise to the reaction solution over half an hour. The mixture was kept warm for 5 hours, cooled and discharged to obtain polyurethane-containing carbon-carbon double bond acrylic resin 2. The schematic diagram of the synthetic route of polyurethane-containing carbon-carbon double bond acrylic resin 2 is as follows.

[0039]

[0040] 3. The synthesis of polyurethane-containing carbon-carbon double bond acrylic resin 3 comprises the following steps:

[0041] (1) 40 parts of isooctyl acrylate, 40 parts of butyl acrylate, 10 parts of 4-hydroxybutyl acrylate, 10 parts of N,N-dimethylacrylamide and 100 parts of ethyl acetate were mixed evenly, stirred and heated to 66°C under nitrogen atmosphere, 0.02 parts of azobisisobutyronitrile as initiator were added, and the mixture was kept warm for 2 hours. Then 0.01 parts of azobisisobutyronitrile as initiator was added, the mixture was heated to 76°C, kept warm for 3 hours, and then cooled to 50°C.

[0042] (2) 0.02 parts of dibutyltin dilaurate were added to the reaction solution after treatment in step (1), and the nitrogen flow was stopped. Under stirring conditions, 9.79 parts of a mixture of ethyl isocyanate acrylate and 9.79 parts of ethyl acetate were added dropwise to the reaction solution over half an hour. The mixture was kept warm for 4 hours, cooled and discharged to obtain polyurethane-containing carbon-carbon double bond acrylic resin 3. The schematic diagram of the synthetic route of polyurethane-containing carbon-carbon double bond acrylic resin 3 is as follows.

[0043]

[0044] 4. The synthesis of polyurethane-containing carbon-carbon double bond acrylic resin 4 comprises the following steps:

[0045] (1) 40 parts of isooctyl acrylate, 15 parts of butyl acrylate, 5 parts of methyl methacrylate, 10 parts of hydroxyethyl acrylate, 10 parts of N,N-dimethylacrylamide and 100 parts of toluene were mixed evenly, stirred and heated to 70°C under nitrogen atmosphere, 0.04 parts of initiator benzoyl peroxide were added, and the temperature was kept for 2 hours. Then 0.01 parts of initiator benzoyl peroxide were added, the temperature was raised to 80°C, the temperature was kept for 3 hours, and the temperature was lowered to 50°C.

[0046] (2) 0.02 parts of dibutyltin dilaurate were added to the reaction solution after treatment in step (1), and the nitrogen flow was stopped. Under stirring conditions, 12.15 parts of a mixture of ethyl isocyanate acrylate and 12.15 parts of ethyl acetate were added dropwise to the reaction solution over half an hour. The mixture was kept warm for 5 hours, cooled and discharged to obtain polyurethane-containing carbon-carbon double bond acrylic resin 4. The schematic diagram of the synthetic route of polyurethane-containing carbon-carbon double bond acrylic resin 4 is as follows.

[0047]

[0048] 5. The synthesis of polyurethane-containing carbon-carbon double bond acrylic resin 5 comprises the following steps:

[0049] (1) 30 parts of isooctyl acrylate, 35 parts of butyl acrylate, 5 parts of methyl methacrylate, 20 parts of hydroxyethyl acrylate, 10 parts of N,N-dimethylacrylamide and 100 parts of toluene were mixed evenly, stirred and heated to 70°C under nitrogen atmosphere, 0.03 parts of initiator benzoyl peroxide were added, and the temperature was kept for 2 hours. Then 0.01 parts of initiator benzoyl peroxide were added, the temperature was raised to 80°C, the temperature was kept for 3 hours, and the temperature was lowered to 50°C.

[0050] (2) Add 0.04 parts of dibutyltin dilaurate to the reaction solution after treatment in step (1), stop nitrogen flow, and add 24.3 parts of a mixture of ethyl isocyanate acrylate and 24.3 parts of ethyl acetate dropwise to the reaction solution over half an hour under stirring. Keep the mixture warm for 5 hours, cool it down and discharge it to obtain polyurethane carbon-carbon double bond-containing acrylic resin 5.

[0051] The schematic diagram of the synthesis route of the polyurethane-containing carbon-carbon double bond acrylic resin 5 is as follows.

[0052]

[0053] Example 1:

[0054] The density of this embodiment after curing is 1.52 g / cm 3 The synthesis of UV adhesive includes the following steps:

[0055] Under a nitrogen atmosphere, in a double planetary mixer, 25 parts of polyurethane carbon-carbon double bond acrylic resin 1, 10 parts of acryloylmorpholine, 19.7 parts of methyl acrylate, 0.1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone (UV-184), and 0.1 part of photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) were added in sequence. The temperature was raised to 80°C and stirred for 2 hours. The temperature was then lowered to 50°C. 40 parts of barium titanate, 5 parts of bismuth sulfate, and 0.1 part of leveling agent BYK302 were added. The mixture was stirred for 3 hours. Excess solvent was removed by vacuum and the mixture was cooled to room temperature.

[0056] Example 2:

[0057] The density of this embodiment after curing is 2.07 g / cm 3 The synthesis of UV adhesive includes the following steps:

[0058] Under a nitrogen atmosphere, in a double planetary mixer, 20 parts of polyurethane carbon-carbon double bond acrylic resin 1, 10 parts of acryloylmorpholine, 14.7 parts of methyl acrylate, 0.1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone (UV-184), and 0.1 part of photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) were added in sequence. The temperature was raised to 80°C and stirred for 2 hours. The temperature was then lowered to 50°C. 40 parts of barium titanate, 10 parts of bismuth sulfate, and 0.1 part of leveling agent BYK302 were added. The mixture was stirred for 3 hours. Excess solvent was removed by vacuum and the mixture was cooled to room temperature.

[0059] Example 3:

[0060] The density of this embodiment after curing is 3.06 g / cm 3 The synthesis of UV adhesive includes the following steps:

[0061] Under a nitrogen atmosphere, in a double planetary mixer, 15 parts of polyurethane carbon-carbon double bond acrylic resin 1, 10 parts of acryloylmorpholine, 14.7 parts of methyl acrylate, 0.1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone (UV-184), and 0.1 part of photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) were added in sequence. The temperature was raised to 80°C and stirred for 2 hours. The temperature was then lowered to 50°C. 40 parts of barium titanate, 20 parts of bismuth sulfate, and 0.1 part of leveling agent BYK333 were added. The mixture was stirred for 3 hours. Excess solvent was removed by vacuum and the mixture was cooled to room temperature.

[0062] Comparative Example 1:

[0063] The density of this comparative example after curing is 1.52g / cm 3 The synthesis of UV adhesive includes the following steps:

[0064] Under a nitrogen atmosphere, 25 parts of polyurethane carbon-carbon double bond acrylic resin 2, 29.7 parts of methyl acrylate, 0.1 parts of photoinitiator 1-hydroxycyclohexyl phenyl ketone (UV-184) and 0.1 parts of photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) were added in sequence to a double planetary mixer. The temperature was raised to 80°C and stirred for 2 hours. The temperature was then lowered to 50°C. 40 parts of barium titanate, 5 parts of bismuth sulfate and 0.1 parts of leveling agent BYK333 were added and stirred for 3 hours. The excess solvent was removed by vacuum and the temperature was lowered to room temperature.

[0065] Comparative Example 2:

[0066] The density of this comparative example after curing is 2.02 g / cm 3 The synthesis of UV adhesive includes the following steps:

[0067] Under a nitrogen atmosphere, 25 parts of polyurethane carbon-carbon double bond acrylic resin 2, 24.7 parts of methyl acrylate, 0.1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone (UV-184) and 0.1 part of photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) were added in sequence to a double planetary mixer. The temperature was raised to 80°C and stirred for 2 hours. The temperature was then lowered to 50°C. 40 parts of barium titanate, 10 parts of bismuth sulfate, 0.05 parts of leveling agents BYK302 and 0.05 parts of BYK333 were added. The mixture was stirred for 3 hours. The excess solvent was removed by vacuum and the mixture was cooled to room temperature.

[0068] Comparative Example 3:

[0069] The density of this comparative example after curing is 3.00 g / cm 3 The synthesis of UV adhesive includes the following steps:

[0070] Under a nitrogen atmosphere, 15 parts of polyurethane carbon-carbon double bond acrylic resin 2, 24.7 parts of methyl acrylate, 0.1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone (UV-184) and 0.1 part of photoinitiator 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) were added in sequence to a double planetary mixer. The temperature was raised to 80°C and stirred for 2 hours. The temperature was then lowered to 50°C. 40 parts of barium titanate, 20 parts of bismuth sulfate, 0.05 parts of leveling agents BYK302 and 0.05 parts of BYK333 were added and stirred for 3 hours. The excess solvent was removed by vacuum and the temperature was lowered to room temperature.

[0071] Effect evaluation:

[0072] 1. The density after curing of the product synthesized in Example 1 is 1.52 g / cm 3 The UV adhesive was tested and optimized for its adhesive thickness, irradiation time, and LED (light-emitting diode) wavelength. The test standards and data are as follows:

[0073] Table 1 Density after curing 1.52 g / cm 3 UV (ultraviolet light) adhesive product curing conditions

[0074]

[0075] ※The above test data is obtained by testing on a black substrate.

[0076] The density after curing of the synthesized product of Example 1 is 1.52 g / cm 3The hardness, density, tensile shear strength, 24H water absorption, temperature resistance, volume resistivity, surface resistivity and dielectric strength of UV adhesives are tested. The test standards and data are as follows:

[0077] Table 2 Example 1 Density 1.52 g / cm 3 Product characteristics of UV adhesive after curing

[0078]

[0079] ※ Impact test at -40℃~100℃ for 168 hours, tensile shear strength retention rate>90%.

[0080] 2. The density after curing of the product synthesized in Example 2 is 2.07 g / cm 3 The UV adhesive was tested and optimized for adhesive thickness, irradiation time, and LED wavelength. The test standards and data are as follows:

[0081] Table 3 Density after curing 2.07 g / cm 3 Product curing conditions of UV adhesives

[0082]

[0083] ※The above test data is obtained by testing on a black substrate.

[0084] The density after curing of the synthesized product of Example 2 is 2.07 g / cm 3 The performance of UV adhesive is tested.

[0085] The density after curing of Example 2 is 2.07 g / cm 3 The hardness, density, tensile shear strength, 24H water absorption, temperature resistance, volume resistivity, surface resistivity and dielectric strength of UV adhesives are tested. The test standards and data are as follows:

[0086] Table 4 Density after curing 2.07 g / cm 3 Product characteristics of UV adhesive after curing

[0087]

[0088] ※ Impact test at -40℃~100℃ for 168 hours, tensile shear strength retention rate>90%.

[0089] 3. The density after curing of the product synthesized in Example 3 is 3.06 g / cm 3 The UV adhesive was tested and optimized for adhesive thickness, irradiation time, and LED wavelength. The test standards and data are as follows:

[0090] Table 5 Density after curing 3.06 g / cm3 Product curing conditions of UV adhesives

[0091]

[0092] ※The above test data is obtained by testing on a black substrate.

[0093] The density after curing of the synthesized product of Example 3 is 3.06 g / cm 3 The hardness, density, tensile shear strength, 24H water absorption, temperature resistance, volume resistivity, surface resistivity and dielectric strength of UV adhesives are tested. The test standards and data are as follows:

[0094] Table 6 Density after curing 3.06 g / cm 3 Product characteristics of UV adhesive after curing

[0095]

[0096] ※ Impact test at -40℃~100℃ for 168 hours, tensile shear strength retention rate>90%.

[0097] In Tables 2, 4, and 6, PC is polycarbonate, SUS is stainless steel, Al is aluminum, PA is polyamide (nylon), PC-SUS refers to polycarbonate bonded to stainless steel, PC-Al refers to polycarbonate bonded to aluminum, and PC-PA refers to polycarbonate bonded to polyamide (nylon).

[0098] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A dynamic balancing UV adhesive, characterized in that: The composition comprises the following components in parts by weight: 10-30 parts of polyurethane-containing carbon-carbon double bond acrylic resin, 10-30 parts of carbon-carbon double bond-containing acrylic ester monomer, 0.2-3 parts of photoinitiator, 40-60 parts of inorganic salt and 0.1-1 part of leveling agent; The preparation method of the polyurethane-containing carbon-carbon double bond acrylic resin comprises the following steps: S21: In a nitrogen atmosphere, 30-85 parts by weight of a monomer, 5-15 parts of a functional monomer, and 6-25 parts of a functional monomer containing an active hydroxyl group are mixed and heated to 60-70° C. to obtain a mixture; S22: adding 0.02-0.5 parts of an initiator to the reaction mixture, reacting at 76-90° C. for 2-8 hours, and then cooling to 40-60° C. to obtain an intermediate product; S23: adding 0.01-0.5 parts of a catalyst and 5-30 parts of an isocyanate to the intermediate product, and reacting for 2-6 hours to obtain the polyurethane-containing carbon-carbon double bond acrylic resin; The isocyanate is selected from ethyl isocyanate acrylate; the monomer is selected from one or more of methyl acrylate, butyl acrylate, isooctyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate and morpholine acrylate; the functional monomer is selected from one or more of acrylic acid, methacrylic acid, N-hydroxymethyl acrylamide, glycidyl acrylate and N,N-dimethylacrylamide; the functional monomer containing active hydroxyl group is selected from one or more of hydroxyethyl acrylate, hydroxypropyl acrylate and hydroxybutyl acrylate; and the inorganic salt is selected from one or more of barium nitrate, barium titanate, barium sulfate, bismuth nitrate and bismuth sulfate.

2. The dynamic balancing UV adhesive according to claim 1, characterized in that: In the reaction raw materials of the polyurethane-containing carbon-carbon double bond acrylic resin, the initiator is selected from azobisisobutyronitrile or benzoyl peroxide.

3. The dynamic balancing UV adhesive according to claim 1, characterized in that: The carbon-carbon double bond-containing acrylic acid ester monomer is selected from one or both of acryloylmorpholine and methyl acrylate.

4. The dynamic balancing UV adhesive according to claim 1, characterized in that: The catalyst is selected from one or more of dioctyltin laurate, dibutyltin dilaurate, bismuth chloride and bismuth oxide.

5. The dynamic balancing UV adhesive according to claim 1, characterized in that: The photoinitiator is selected from one or more of benzil dimethyl ether, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide.

6. The dynamic balancing UV adhesive according to claim 1, characterized in that: The density of the dynamic balancing UV adhesive is in the range of 1.5-3.1 g / cm 3 .

7. A method for preparing the dynamic balancing UV adhesive according to any one of claims 1 to 6, characterized in that: The steps include: S31: In a nitrogen atmosphere, 10-30 parts by weight of a polyurethane-containing carbon-carbon double bond acrylic resin, 10-30 parts of a carbon-carbon double bond acrylic ester monomer, and 0.2-3 parts of a photoinitiator are heated to 75-85° C. and mixed for 1-3 hours to obtain a mixed resin solution; S32: After cooling the mixed resin liquid to 45-55° C., 40-60 parts of inorganic salt and 0.1-1 part of leveling agent are added and stirred for 2-3 hours to obtain the dynamic balancing UV adhesive.

8. The use of the dynamic balancing UV adhesive according to any one of claims 1 to 6, characterized in that: The dynamic balancing UV adhesive is exposed to ultraviolet light and the surface drying time is 1-3 seconds.

Images