Mechanical self-adaptive reinforced adhesive material as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of adhesives, and particularly relates to a mechanical self-adaptive enhanced adhesive material as well as a preparation method and application thereof. The mechanical self-adaptive enhanced adhesive material provided by the invention is prepared from the following preparation raw materials: a polymeric monomer, an initiator and an organic solvent, the polymeric monomers comprise an N-[2-(3, 4-dihydroxyphenyl) ethyl]-2-alkyl acrylamide monomer, an acrylic acid alkoxy alkyl ester monomer, an acrylic acid alkyl ester monomer and a 2-(3-(6-methyl-4-oxo-1, 4-dihydropyrimidine-2-yl) ureido) alkyl methacrylate monomer. According to the invention, four functional monomers are used for copolymerization, the adhesion performance of the obtained adhesive material is not weakened under the service conditions of vibration and mechanical shock, but is self-adaptively enhanced, the adhesive strength is high, the adhesion performance is lasting, and the adhesive material is suitable for various base materials. The adhesive material provided by the invention can be used under a mechanical vibration condition, and is high in adhesion strength, resistant to external damage, simple in application method and wide in application range.

Description

Technical Field

[0001] This invention belongs to the field of adhesive technology, specifically relating to a mechanically adaptive adhesive material, its preparation method, and its application. Background Technology

[0002] Adhesive materials have a wide range of applications in industry, such as aerospace, shipbuilding, electronics, and construction. However, most operating environments involve continuous mechanical fretting, which is extremely detrimental to interfacial adhesion and can easily lead to fatigue aging and failure of the adhesive material. In vibration environments, adhesive materials are continuously subjected to mechanical impacts, causing the molecular chains to break due to fatigue. This reduces the mechanical strength of the adhesive and ultimately leads to bond failure. Therefore, most adhesive materials cannot operate under prolonged mechanical stress conditions.

[0003] Currently, common adhesives include epoxy resin, polyurethane, and silicone. In order to enhance the mechanical resistance of adhesives, a common method is to continuously improve the adhesive strength of the material so that it can still maintain a considerable adhesive strength after mechanical damage. However, it will still break after long-term mechanical micro-movement. Summary of the Invention

[0004] In view of this, the present invention provides a mechanically adaptively reinforced adhesive material, its preparation method and application. The mechanically adaptively reinforced adhesive material provided by the present invention has high adhesive strength, stable and durable adhesive performance, can resist external force damage, and can adaptively improve adhesive strength in response to the impact of external mechanical force.

[0005] To address the aforementioned technical problems, this invention provides a mechanically adaptive reinforced adhesive material, comprising the following raw materials: polymeric monomers, initiators, and organic solvents;

[0006] The polymerization monomers include N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer, alkoxyalkyl acrylate monomer, alkyl acrylate monomer, and 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer;

[0007] The molar ratio of the N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer to the alkoxyalkyl acrylate monomer is 1-2:3-9;

[0008] The molar ratio of the N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer to the alkyl acrylate monomer is 1-2:1-4;

[0009] The molar ratio of the N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer to the 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer is 1-2:2-5.

[0010] Preferably, the N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer includes one or more of N-[2-(3,4-dihydroxyphenyl)ethyl]-2-acrylamide, N-[2-(3,4-dihydroxyphenyl)ethyl]-2-methylacrylamide, and N-[2-(3,4-dihydroxyphenyl)ethyl]-2-ethylacrylamide.

[0011] Preferably, the alkoxyalkyl acrylate monomer includes one or more of methoxyethyl acrylate, methoxypropyl acrylate, methoxybutyl acrylate, ethoxyethyl acrylate, ethoxypropyl acrylate, and ethoxybutyl acrylate.

[0012] Preferably, the alkyl acrylate monomer includes one or more of methyl methacrylate, methyl acrylate, ethyl methacrylate, ethyl acrylate, butyl methacrylate, and butyl acrylate.

[0013] Preferably, the 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkyl methacrylate monomer includes one or more of 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate, 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)propyl methacrylate and 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)butyl methacrylate.

[0014] Preferably, the initiator is a free radical initiator;

[0015] The free radical initiators include organic peroxides and / or azo initiators;

[0016] The organic solvent includes one or more of N,N-dimethylformamide, ethyl acetate, butyl acetate, acetone, butanone, cyclohexanone, tetrahydrofuran, ethylene glycol ethyl ether acetate, propylene glycol ethyl ether acetate, and dimethyl sulfoxide.

[0017] Preferably, the molar ratio of the initiator to the 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer is 1:10 to 60.

[0018] This invention also provides a method for preparing the mechanically adaptive reinforced adhesive material described in the above technical solution, comprising the following steps:

[0019] The mechanically adaptive reinforced adhesive material is obtained by mixing N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer, alkoxyalkyl acrylate monomer, alkyl acrylate monomer, 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer, initiator and organic solvent and then carrying out a polymerization reaction.

[0020] Preferably, the polymerization reaction is carried out at a temperature of 65–95°C for 12–30 hours, and the polymerization reaction is carried out under a protective atmosphere.

[0021] The present invention also provides the application of the mechanically adaptive reinforcing adhesive material described in the above technical solution or the mechanically adaptive reinforcing adhesive material prepared by the preparation method described in the above technical solution in the bonding of plastics, metals and wood.

[0022] This invention provides a mechanically adaptive reinforced adhesive material, comprising the following raw materials: a polymeric monomer, an initiator, and an organic solvent; the polymeric monomer includes N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer, alkoxyalkyl acrylate monomer, alkyl acrylate monomer, and 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer; the N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkyl The molar ratio of acrylamide monomer to alkoxyalkyl acrylate monomer is 1-2:3-9; the molar ratio of N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer to alkyl acrylate monomer is 1-2:1-4; the molar ratio of N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer to 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureo)alkylmethacrylate monomer is 1-2:2-5. This invention uses four functional monomers for copolymerization. Among them, the 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkyl methacrylate monomer, as a key mechanical adapting group, plays the following roles: This monomer contains multiple hydrogen bonds, which rapidly reconstruct upon impact, increasing its cohesive energy and thus enhancing polymer stiffness. The N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer acts as an interfacial adhesive. The alkoxyalkyl acrylate monomer and the alkyl acrylate monomer regulate the softness and hardness of the molecular chain segments in the adhesive material. The adhesive material provided by this invention can be used under mechanical vibration conditions, exhibits high adhesive strength, resistance to external force damage, and adaptively increases adhesive strength in response to external mechanical impact. It also demonstrates stable and durable adhesive performance, simple application methods, and a wide range of applications. The results of the embodiments of the present invention show that the mechanically adaptive reinforced adhesive material provided by the present invention is suitable for bonding plastics, metals and wood, with an adhesion strength of up to 582 kPa, and the adhesion strength can be increased to 2500 kPa (10,000 mechanical force impact cycles) after long-term external force impact. Detailed Implementation

[0023] This invention provides a mechanically adaptive reinforced adhesive material, comprising the following raw materials: polymeric monomers, initiators, and organic solvents.

[0024] In this invention, the polymer monomers include N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer, alkoxyalkyl acrylate monomer, alkyl acrylate monomer, and 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer. In one specific embodiment of the present invention, the N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer may include one or more of N-[2-(3,4-dihydroxyphenyl)ethyl]-2-acrylamide, N-[2-(3,4-dihydroxyphenyl)ethyl]-2-methylacrylamide, and N-[2-(3,4-dihydroxyphenyl)ethyl]-2-ethylacrylamide, specifically N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer including N-[2-(3,4-dihydroxyphenyl)ethyl]-2-acrylamide, N-[2-(3,4-dihydroxyphenyl)ethyl]-2-methylacrylamide, or N-[2-(3,4-dihydroxyphenyl)ethyl]-2-ethylacrylamide.

[0025] In this invention, the N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer can impart mechanically adaptively enhanced interfacial adhesion properties to adhesive materials.

[0026] As a specific embodiment of the present invention, the alkoxyalkyl acrylate monomer may include one or more of methoxyethyl acrylate, methoxypropyl acrylate, methoxybutyl acrylate, ethoxyethyl acrylate, ethoxypropyl acrylate, and ethoxybutyl acrylate, specifically methoxyethyl acrylate, methoxypropyl acrylate, methoxybutyl acrylate, ethoxyethyl acrylate, ethoxypropyl acrylate, or ethoxybutyl acrylate.

[0027] As a specific embodiment of the present invention, the alkyl acrylate monomer may include one or more of methyl methacrylate, methyl acrylate, ethyl methacrylate, ethyl acrylate, butyl methacrylate and butyl acrylate, specifically methyl methacrylate, methyl acrylate, ethyl methacrylate, ethyl acrylate, butyl methacrylate or butyl acrylate.

[0028] In this invention, alkyl acrylate monomers are hard monomers and alkoxyalkyl acrylate monomers are soft monomers; this invention achieves good control over the hardness and softness of mechanically adaptive reinforced adhesive materials by adjusting the amount of alkyl acrylate monomers and alkoxyalkyl acrylate monomers.

[0029] In one specific embodiment of the present invention, the 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkyl methacrylate monomer may include 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate, 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)propyl methacrylate and 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate. One or more of 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)butyl methacrylate, specifically 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate, 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)propyl methacrylate or 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)butyl methacrylate.

[0030] In this invention, the 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkyl methacrylate monomer contains four hydrogen bonds. Under external force, these four hydrogen bonds rearrange, making the polymer chain segments more compact. This allows the polymer to absorb the energy of external force damage and adaptively increase the cohesive force of the adhesive material, thereby endowing the adhesive material with super strong mechanical self-reinforcing adhesive properties.

[0031] In this invention, the molar ratio of N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer to alkoxyalkyl acrylate monomer is 1-2:3-9, which can be 1-2:4-8, or 1:6-7; the molar ratio of N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer to alkyl acrylate monomer is 1-2:1-4, which can be 1-2:2-3, or 1:2.25-3; the molar ratio of N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer to 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureo)alkylmethacrylate monomer is 1-2:2-5, which can be 1-2:3-4, or 1:3-4. In one specific embodiment of the present invention, the molar ratio of the N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer, the alkoxyalkyl acrylate monomer, the alkyl acrylate monomer, and the 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer can be 1:6.25:2.34:4.65.

[0032] In one specific embodiment of the present invention, the initiator may be a free radical initiator; the free radical initiator may include organic peroxides and / or azo initiators, specifically organic peroxides or azo initiators; the organic peroxide may include one or more of cyclohexanone peroxide, benzoyl peroxide, and tert-butyl hydroperoxide, specifically cyclohexanone peroxide, benzoyl peroxide, or tert-butyl hydroperoxide; the azo initiator may include azobisisobutyronitrile and / or azobisisoheptanenitrile, specifically azobisisobutyronitrile or azobisisoheptanenitrile. In one specific embodiment of the present invention, the molar ratio of the initiator to the 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer can be 1:10 to 60, or 1:20 to 50, or even 1:30 to 40, specifically 1:10, 1:20, 1:30, 1:31, 1:40, 1:50 or 1:60.

[0033] In one specific embodiment of the present invention, the organic solvent may include one or more of N,N-dimethylformamide, ethyl acetate, butyl acetate, acetone, butanone, cyclohexanone, tetrahydrofuran, ethylene glycol ethyl ether acetate, propylene glycol ethyl ether acetate, and dimethyl sulfoxide, specifically N,N-dimethylformamide, ethyl acetate, butyl acetate, acetone, butanone, cyclohexanone, tetrahydrofuran, ethylene glycol ethyl ether acetate, propylene glycol ethyl ether acetate, or dimethyl sulfoxide. In the present invention, the organic solvent is an anhydrous organic solvent. The present invention specifically limits the amount of the organic solvent used, as long as it is sufficient to completely dissolve the polymerizable monomer.

[0034] This invention also provides a method for preparing the mechanically adaptive reinforced adhesive material described in the above technical solution, comprising the following steps:

[0035] The mechanically adaptive reinforced adhesive material is obtained by mixing N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer, alkoxyalkyl acrylate monomer, alkyl acrylate monomer, 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer, initiator and organic solvent and then carrying out a polymerization reaction.

[0036] The present invention does not impose any particular limitation on the mixing, as long as the mixture can be mixed evenly.

[0037] In one specific embodiment of the present invention, the polymerization temperature can be 65–95°C, or 70–90°C, or even 75–80°C; the polymerization time can be 12–30 h, or 15–25 h. In another specific embodiment of the present invention, the polymerization reaction can be carried out under a protective atmosphere, which may include nitrogen; the polymerization reaction may be accompanied by stirring, and the present invention does not have any particular limitation on the stirring, as long as it allows for a sufficient reaction; the polymerization reaction can be carried out at atmospheric pressure, which can be 101 kPa.

[0038] In the polymerization process of this invention, N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer, alkoxyalkyl acrylate monomer, alkyl acrylate monomer and 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer are copolymerized, and the resulting polymer is the mechanically adaptive reinforced adhesive material of this invention.

[0039] In one specific embodiment of the present invention, the polymerization reaction may further include: adding methyl tert-butyl ether to the post-polymerization system followed by solid-liquid separation to obtain the mechanically adaptively reinforced adhesive material. In another specific embodiment of the present invention, the volume ratio of the post-polymerization system to methyl tert-butyl ether can be 1:4.5–5.5, specifically 1:5; the solid-liquid separation can be filtration or vacuum filtration. The present invention does not have special requirements for filtration or vacuum filtration; conventional methods in the art are acceptable. The solid obtained by solid-liquid separation in the present invention is a mechanically adaptively reinforced adhesive material.

[0040] This invention uses four functional monomers for copolymerization, and the resulting adhesive material not only does not have its adhesive properties weakened under vibration and mechanical shock conditions, but is actually enhanced adaptively, exhibiting high adhesive strength, long-lasting adhesive performance, and adaptability to various substrates.

[0041] The preparation method provided by this invention has simple steps, requires no multiple additives, is low in cost, and is easy to carry out industrial production.

[0042] The present invention also provides the application of the mechanically adaptive reinforcing adhesive material described in the above technical solution or the mechanically adaptive reinforcing adhesive material prepared by the preparation method described in the above technical solution in the bonding of plastics, metals and wood.

[0043] As a specific embodiment of the present invention, the bonding step using the mechanically adaptive reinforced adhesive material may include the following steps:

[0044] The mechanically adaptive adhesive material and a diluent are mixed to obtain an adhesive solution;

[0045] The adhesive is applied to the surface of the substrate for bonding.

[0046] In one specific embodiment of the present invention, the diluent can be a low-boiling-point solvent, which may include dichloromethane or methanol; the mass concentration of the mechanically adaptive reinforcing adhesive material in the adhesive solution can be 40-60%, or 45-55%, specifically 50%.

[0047] In one specific embodiment of the present invention, the substrate may include plastic, metal, or wood, and the metal may include steel or iron. The present invention does not impose any particular limitation on the coating, as long as the adhesive can be uniformly adhered to the surface of the substrate.

[0048] In this invention, the adhesive can be directly applied to the substrate and can be used under mechanical vibration conditions, resisting external damage. The adhesive material provided by this invention has a simple application method; it is applied to the material interface for bonding, and the adhesion strength can be adaptively increased in response to external impacts.

[0049] The adhesive material provided by this invention does not require the use of crosslinking agents for curing, has high adhesion strength, is resistant to external damage, and can adaptively improve its adhesion strength in response to external mechanical impacts. It also has stable and long-lasting adhesion performance, simple application methods, and a wide range of applications.

[0050] To further illustrate the present invention, the technical solutions provided by the present invention will be described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0051] Example 1

[0052] 0.768 mmol of N-[2-(3,4-dihydroxyphenyl)ethyl]-2-methylacrylamide, 4.803 mmol of methoxyethyl acrylate, 1.798 mmol of methyl methacrylate, 3.568 mmol of 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate, and 0.304 mmol of azobisisobutyronitrile were dissolved in 10 mL of anhydrous N,N-dimethylformamide. The mixture was added to a reaction tube, and nitrogen gas was introduced for 30 min. The mixture was then magnetically stirred and polymerized at 80 °C and atmospheric pressure (101 kPa) for 12 h. The polymerized mixture was then filtered to obtain a mechanically adaptive reinforced adhesive material.

[0053] The mechanically adaptive adhesive material was dissolved in dichloromethane solvent to obtain a paste-like solution with a mass fraction of 50%.

[0054] Test Example 1

[0055] The adhesive solution prepared in Example 1 was directly applied to the surface of the substrate for adhesion. After drying for 12 hours to remove the solvent, the adhesive strength was tested. A tensile testing machine was used to evaluate the adhesion strength of the adhesive solution to the substrate surface, with a test speed of 25 mm / min and a steel sheet as the test pair.

[0056] Tests showed that the adhesive strength on the steel sheet surface was 582 kPa under conditions without any mechanical impact.

[0057] Test Example 2

[0058] The adhesion performance of the adhesive to different mechanical impact cycles was evaluated using a vibration platform.

[0059] The air adhesion strength of the obtained adhesive solution was evaluated using a vibration platform, with a 10×20mm steel sheet as the test pair. 2 The counterweight is 1kg and the vibration frequency is 5Hz.

[0060] The results showed that the adhesive strength of the obtained adhesive solution was 1142 kPa after 10 vibration cycles; 1697 kPa after 100 vibration cycles; 2509 kPa after 1000 vibration cycles; and 2554 kPa after 10000 vibration cycles. Compared with the sample subjected to 1000 vibration cycles, the adhesive strength did not decrease and could maintain long-term stability.

[0061] When the mechanically adaptive reinforcing adhesive material provided by this invention is used to bond steel, the bonding strength is significantly improved under vibration adjustment, and the adhesive material exhibits significant force-inducing characteristics.

[0062] Test Example 3

[0063] The adhesive was applied to the surface of different substrates and its adhesion strength was tested when the substrate was vibrated on a vibration platform.

[0064] The adhesive prepared in Example 1 was used to evaluate the adhesion performance of the adhesive to different substrates after different vibration times using a vibration platform. The results are listed in Table 1.

[0065] The air adhesion strength of the obtained adhesive material was evaluated using a vibration platform. The test pairs used were steel sheet, wood, and plexiglass (plastic), with dimensions of 10×20mm. 2 The counterweight is 1kg and the vibration frequency is 5Hz.

[0066] Table 1. Adhesion performance of adhesive on different substrates after different vibration times.

[0067]

[0068] As can be seen from Table 1, the mechanically adaptive reinforcing adhesive material provided by the present invention is applicable to steel sheets, wood and plastics, and the adhesive strength increases with the increase of mechanical vibration.

[0069] As can be seen from the above embodiments, the mechanically adaptive reinforced adhesive material prepared by the present invention has high adhesion strength, stable and durable adhesion performance, force-inducing properties, and wide material applicability.

[0070] Although the above embodiments have provided a detailed description of the present invention, they are only some embodiments of the present invention, and not all embodiments. People can obtain other embodiments based on these embodiments without creative effort, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A mechanically adaptive reinforcing adhesive material, characterized in that, The preparation materials include: monomers, initiators, and organic solvents; The polymerization monomers include N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer, alkoxyalkyl acrylate monomer, alkyl acrylate monomer, and 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer; The molar ratio of the N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer to the alkoxyalkyl acrylate monomer is 1-2:3-9; The molar ratio of the N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer to the alkyl acrylate monomer is 1-2:1-4; The molar ratio of the N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer to the 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer is 1-2:2-5.

2. The mechanically adaptive reinforced adhesive material according to claim 1, characterized in that, The N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer includes one or more of N-[2-(3,4-dihydroxyphenyl)ethyl]-2-acrylamide, N-[2-(3,4-dihydroxyphenyl)ethyl]-2-methylacrylamide, and N-[2-(3,4-dihydroxyphenyl)ethyl]-2-ethylacrylamide.

3. The mechanically adaptive reinforced adhesive material according to claim 1, characterized in that, The alkoxyalkyl acrylate monomers include one or more of methoxyethyl acrylate, methoxypropyl acrylate, methoxybutyl acrylate, ethoxyethyl acrylate, ethoxypropyl acrylate, and ethoxybutyl acrylate.

4. The mechanically adaptive reinforced adhesive material according to claim 1, characterized in that, The alkyl acrylate monomers include one or more of methyl methacrylate, methyl acrylate, ethyl methacrylate, ethyl acrylate, butyl methacrylate, and butyl acrylate.

5. The mechanically adaptive reinforced adhesive material according to claim 1, characterized in that, The 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkyl methacrylate monomers include one or more of 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate, 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)propyl methacrylate, and 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)butyl methacrylate.

6. The mechanically adaptive reinforced adhesive material according to claim 1, characterized in that, The initiator is a free radical initiator; The free radical initiators include organic peroxides and / or azo initiators; The organic solvent includes one or more of N,N-dimethylformamide, ethyl acetate, butyl acetate, acetone, butanone, cyclohexanone, tetrahydrofuran, ethylene glycol ethyl ether acetate, propylene glycol ethyl ether acetate, and dimethyl sulfoxide.

7. The mechanically adaptive reinforced adhesive material according to claim 1 or 6, characterized in that, The molar ratio of the initiator to the 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer is 1:10 to 60.

8. A method for preparing the mechanically adaptive reinforced adhesive material according to any one of claims 1 to 7, characterized in that, Includes the following steps: The mechanically adaptive reinforced adhesive material is obtained by mixing N-[2-(3,4-dihydroxyphenyl)ethyl]-2-alkylacrylamide monomer, alkoxyalkyl acrylate monomer, alkyl acrylate monomer, 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)alkylmethacrylate monomer, initiator and organic solvent and then carrying out a polymerization reaction.

9. The preparation method according to claim 8, characterized in that, The polymerization reaction is carried out at a temperature of 65–95°C for 12–30 hours, and under a protective atmosphere.

10. The application of the mechanically adaptive reinforcing adhesive material according to any one of claims 1 to 7 or the mechanically adaptive reinforcing adhesive material prepared by the preparation method according to claim 8 or 9 in the bonding of plastics, metals and wood.

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