High-adhesion vehicle-mounted anti-blast film special glue

Abstract

The application discloses a kind of high adhesion vehicle-mounted explosion-proof film special glue, by mass fraction, including the following components: acrylate soft monomer 30~45 parts;Acrylate hard monomer 8~15 parts;Functional monomer 3~6 parts;Ion liquid functionalized core-shell nanoparticle 2~6 parts;Hyperbranched polyether-siloxane block copolymer 1.5~4 parts;Tackifying resin 5~10 parts;Photoinitiator 0.5~1.5 parts;Thermal initiator 0.3~0.8 parts;Curing accelerator 0.2~0.6 parts;Solvent 40~60 parts;The application introduces ion liquid functionalized core-shell nanoparticle into vehicle-mounted explosion-proof film special glue, imidazole cation in ion liquid can form hydrogen bond and electrostatic interaction with the silicon hydroxyl group on the surface of glass, significantly improve the adhesion of glue layer to inorganic glass substrate;At the same time, rubber core layer in core-shell structure can absorb impact energy, improve the impact resistance of explosion-proof film.

Description

Technical Field

[0001] This invention belongs to the field of pressure-sensitive adhesive technology, specifically a high-adhesion automotive explosion-proof film-specific adhesive. Background Technology

[0002] Automotive safety film is a functional film applied to the surface of automotive glass, primarily serving functions such as heat insulation, explosion protection, UV protection, and privacy protection. The performance of the safety film largely depends on the adhesion strength between its adhesive layer and the glass substrate. Currently, automotive safety films mostly use traditional acrylic pressure-sensitive adhesives, which suffer from insufficient adhesion to the glass substrate, poor weather resistance, easy delamination under high temperature and humidity conditions, and poor impact resistance.

[0003] In recent years, researchers have tried various modification methods to improve the performance of pressure-sensitive adhesives. For example, Chinese patent CN119144257A discloses a high weather-resistant pressure-sensitive adhesive that uses olefin-based cage-type silsesquioxane as a modifying component; Chinese patent CN111133074B discloses a pressure-sensitive adhesive with a hyperbranched silsesquioxane core; and Chinese patent CN119019962A discloses an acrylic pressure-sensitive adhesive for TPU car wrap film, which introduces reactive polycaprolactone to improve adhesion.

[0004] However, the above technical solutions still have the following shortcomings in the application scenarios of automotive explosion-proof films: 1) Its chemical bonding ability to inorganic glass surfaces is limited, and its long-term adhesion needs to be improved; 2) The interfacial compatibility and dispersion stability of core-shell structured particles are insufficient; 3) The compatibility between the organosilicon-modified components and the acrylate matrix is ​​poor, and phase separation is likely to occur.

[0005] Therefore, developing a special adhesive for vehicle-mounted explosion-proof films that combines high adhesion, excellent weather resistance, good optical transparency, and good construction performance is of great practical significance and market value.

[0006] Based on this, a special adhesive for high-adhesion vehicle explosion-proof film was designed. Summary of the Invention

[0007] In view of the above situation and to overcome the defects of the prior art, the present invention provides a special adhesive for high adhesion vehicle explosion-proof film, which effectively solves the problems mentioned in the background.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a high-adhesion automotive explosion-proof film adhesive, comprising the following components by weight: 30-45 parts of acrylate soft monomer; 8-15 parts of acrylate hard monomer; 3 to 6 parts of functional monomer; 2-6 parts of ionic liquid-functionalized core-shell nanoparticles; 1.5 to 4 parts of hyperbranched polyether-siloxane block copolymer; 5-10 parts of tackifying resin; Photoinitiator 0.5–1.5 parts; 0.3–0.8 parts of thermal initiator; Curing accelerator: 0.2–0.6 parts; Solvent 40-60 parts; The ionic liquid functionalized core-shell nanoparticles are core-shell structured nanoparticles with a silica-acrylate composite as the shell and polybutadiene rubber as the core, and which are functionalized by imidazole ionic liquid. The hyperbranched polyether-siloxane block copolymer is an amphiphilic block copolymer with hyperbranched polyether as the branching core and polydimethylsiloxane as the linear block.

[0009] Preferably, the acrylate soft monomer is selected from one or more of isooctyl acrylate, butyl acrylate, isodecanyl acrylate, and lauryl acrylate; The acrylate hard monomer is selected from one or more of methyl methacrylate, ethyl methacrylate, isobornyl methacrylate, and acrylonitrile; The functional monomer is selected from one or more of acrylic acid, methacrylic acid, hydroxyethyl acrylate, glycidyl methacrylate, acrylamide, and N-hydroxymethylacrylamide; The tackifying resin is selected from one or more of the following: pentaerythritol rosin, hydrogenated rosin glycerol ester, terpene phenolic resin, C5 petroleum resin, and C9 petroleum resin. The photoinitiator is selected from one or more of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 1-hydroxycyclohexylphenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, and benzophenone; The thermal initiator is selected from one or more of azobisisobutyronitrile, azobisisoheptanenitrile, benzoyl peroxide, and di-tert-butyl peroxide; The curing accelerator is selected from one or more of triethylenediamine, N,N-dimethylbenzylamine, and 2,4,6-tris(dimethylaminomethyl)phenol; The solvent is selected from one or more of ethyl acetate, butyl acetate, toluene, xylene, acetone, butanone, and cyclohexanone.

[0010] Preferably, the method for preparing the ionic liquid functionalized core-shell nanoparticles includes the following steps: S1. Preparation of core layer emulsion: Add polybutadiene rubber emulsion to the reaction vessel, add deionized water to dilute to a solid content of 15% to 25%, heat to 60℃ to 75℃, add emulsifier sodium dodecyl sulfate, set the stirring speed to 300 to 500 r / min, and pre-emulsify for 20 to 40 min. S2. Shell Monomer Pre-emulsification: Soft acrylate monomers, hard acrylate monomers, and functional monomers are mixed in a mass ratio of (6-8):(2-3):(0.5-1.5). Tetraethyl orthosilicate and γ-methacryloyloxypropyltrimethoxysilane are added, wherein the amount of tetraethyl orthosilicate is 8%-15% of the total monomer mass, and the amount of γ-methacryloyloxypropyltrimethoxysilane is 3%-6% of the total monomer mass. Then, emulsifier and deionized water are added, and the mixture is emulsified at high speed at 800-1200 r / min for 30-50 min at room temperature to obtain a shell pre-emulsion. S3, Seed Polymerization: Add 20% to 30% of the total mass of the shell layer pre-emulsion to the core layer emulsion of step S1, add 0.3% to 0.6% of the total mass of the shell layer monomers as a thermal initiator, potassium persulfate, heat to 75℃ to 85℃, and react for 1 to 2 hours. S4. Shell growth polymerization: The remaining shell pre-emulsion is added dropwise to the reaction system at a uniform rate over 2-4 hours, with the temperature controlled at 80℃-90℃ during the addition. After the addition is complete, the reaction continues for 1-2 hours. Then, the temperature is raised to 85℃-95℃, and potassium persulfate of 0.1%-0.3% of the total mass of the shell monomers is added. The reaction is kept at this temperature for 1-2 hours. S5. Ionic liquid functionalization: 1-vinyl-3-butylimidazolium bromide ionic liquid was dissolved in an ethanol-water mixed solvent to prepare a solution with a mass concentration of 3% to 8%; the core-shell nanoparticle emulsion obtained in step S4 was cooled to 50℃ to 65℃, and the ionic liquid solution was slowly added dropwise under stirring at 200 to 400 r / min for 30 to 60 min; after the addition was complete, 1% to 3% of azobisisobutyronitrile (AIBN) was added as a grafting initiator, and the temperature was raised to 65℃ to 75℃ for 2 to 4 h; after the reaction was completed, the mixture was cooled to room temperature, demulsified, washed, and vacuum dried to obtain ionic liquid functionalized core-shell nanoparticles.

[0011] Preferably, the method for preparing the hyperbranched polyether-siloxane block copolymer includes the following steps: S1. Preparation of hyperbranched polyether polyols: Trimethylolpropane is used as the core molecule and is melt-polymerized with 2,2-dimethylolpropionic acid at a hydroxyl to carboxyl molar ratio of 1:(1.05-1.2). The reaction temperature is 140℃-160℃, and the mixture is stirred at 100-200 r / min under nitrogen protection. 2,2-dimethylolpropionic acid is added in batches with an interval of 30-60 min between each batch, and the total reaction time is 4-6 h. After the reaction is completed, the mixture is cooled to room temperature to obtain hyperbranched polyether polyols of generation 3-5. S2. Preparation of hydroxyl-terminated polydimethylsiloxane: Octamethylcyclotetrasiloxane and 1,3-bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane were mixed at a mass ratio of (8-12):1. Tetramethylammonium hydroxide was added as a catalyst, with the amount of catalyst being 0.05%-0.15% of the total mass of the reactants. The ring-opening polymerization reaction was carried out at 80℃-100℃ and a vacuum degree of -0.08--0.095MPa for 4-6 hours to obtain hydroxyl-terminated polydimethylsiloxane with a molecular weight of 2000-5000. S3. Block copolymerization reaction: The hyperbranched polyether polyol obtained in step S1 and the hydroxyl-terminated polydimethylsiloxane obtained in step S2 are mixed at a mass ratio of 1:(2-4), and toluene is added as a solvent to prepare a solution with a solid content of 30%-50%; isophorone diisocyanate is added as a coupling agent, and the amount of isophorone diisocyanate is 5%-10% of the total mass of the hyperbranched polyether polyol and the hydroxyl-terminated polydimethylsiloxane; dibutyltin dilaurate is added as a catalyst, and the amount of catalyst is 0.02%-0.05% of the total mass of the reactants; the temperature is raised to 70℃-85℃, and the reaction is carried out at a speed of 200-400 r / min for 3-5 h; after the reaction is completed, the solvent is removed by vacuum distillation to obtain the hyperbranched polyether-siloxane block copolymer.

[0012] A method for preparing a high-adhesion automotive explosion-proof film adhesive includes the following steps: S1. Preparation of prepolymer: Mix the soft acrylate monomer, hard acrylate monomer, and functional monomer according to the formula ratio, add 40% to 60% of the total mass of monomers to the reactor, add 50% to 70% of the total mass of solvent, heat to 70℃ to 80℃, and stir at 150 to 300 r / min for 10 to 20 min under nitrogen protection. S2. Initiating polymerization: Add 60% to 80% of the total mass of thermal initiator, raise the temperature to 75℃ to 85℃, react for 1 to 2 hours, and obtain the prepolymer; S3. Droplet polymerization: Prepare a mixed solution with the remaining monomer and solvent, and add it dropwise to the prepolymer of step S2 at a uniform rate over 2-3 hours. During the droplet addition, the temperature is controlled at 78℃-88℃. After the droplet addition is complete, add the remaining thermal initiator, raise the temperature to 80℃-90℃, and continue the reaction for 1.5-2.5 hours. S4. Introduction of functional components: Cool the reaction system to 50℃~65℃, add ionic liquid functionalized core-shell nanoparticles, and disperse them at high speed of 300~600r / min for 30~60min; then add hyperbranched polyether-siloxane block copolymer and stir at 200~400r / min for 20~40min. S5. Post-treatment: Add tackifying resin, heat to 60℃~75℃, stir and dissolve for 30~60min; cool to 40℃~55℃, add photoinitiator and curing accelerator, stir at 100~200r / min for 15~30min; finally add solvent to adjust viscosity, filter and discharge to obtain high adhesion vehicle explosion-proof film special adhesive.

[0013] Preferably, after the dropwise polymerization is completed in step S3, the solid content of the reaction system is controlled at 45% to 60%, and the viscosity is controlled at 2000 to 5000 mPa·s.

[0014] Preferably, in step S4, the ionic liquid functionalized core-shell nanoparticles are added in the form of a dispersion of 10% to 20%, and the solvent of the dispersion is the same as the solvent of the glue system.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention introduces ionic liquid functionalized core-shell nanoparticles into the special adhesive for automotive explosion-proof films. The imidazole cations in the ionic liquid can form hydrogen bonds and electrostatic interactions with the silanol groups on the glass surface, significantly improving the adhesion of the adhesive layer to the inorganic glass substrate. At the same time, the rubber core layer in the core-shell structure can absorb impact energy and improve the impact resistance of the explosion-proof film. 2. This invention uses hyperbranched polyether-siloxane block copolymers as structural reinforcement and interfacial compatibility components. The high functionality of the hyperbranched structure can form a three-dimensional physical cross-linking network in the adhesive layer, improving cohesive strength. The polydimethylsiloxane blocks endow the adhesive with excellent weather resistance and low surface energy properties. The amphiphilic structure effectively solves the compatibility problem between traditional organosilicon modifiers and acrylate matrices. 3. This invention utilizes the synergistic effect of ionic liquid-functionalized core-shell nanoparticles and hyperbranched polyether-siloxane block copolymers. The ionic liquid-functionalized core-shell nanoparticles provide interfacial adhesion and energy absorption functions, while the hyperbranched polyether-siloxane block copolymers provide structural reinforcement and compatibility stabilization functions. The combined effect of these two components enables the adhesive to possess high adhesion, high cohesive strength, excellent weather resistance, and impact resistance. 4. This invention adopts a dual curing system of light and heat, which can achieve rapid initial adhesion through heat curing and deep cross-linking through light curing, meeting the needs of different construction processes; moreover, the adhesive prepared by this invention has good optical transparency, low haze, and does not affect the visual clarity of the explosion-proof film. Detailed Implementation

[0016] The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] This invention provides a special adhesive for high-adhesion automotive explosion-proof film, comprising the following components by weight: 30-45 parts of acrylate soft monomer; 8-15 parts of acrylate hard monomer; 3 to 6 parts of functional monomer; 2-6 parts of ionic liquid-functionalized core-shell nanoparticles; 1.5 to 4 parts of hyperbranched polyether-siloxane block copolymer; 5-10 parts of tackifying resin; Photoinitiator 0.5–1.5 parts; 0.3–0.8 parts of thermal initiator; Curing accelerator: 0.2–0.6 parts; Solvent 40-60 parts; The ionic liquid functionalized core-shell nanoparticles are core-shell structured nanoparticles with a silica-acrylate composite as the shell and polybutadiene rubber as the core, and which are functionalized by imidazole ionic liquid. The hyperbranched polyether-siloxane block copolymer is an amphiphilic block copolymer with hyperbranched polyether as the branching core and polydimethylsiloxane as the linear block.

[0018] In this embodiment, the acrylate soft monomer is selected from one or more of isooctyl acrylate, butyl acrylate, isodecanyl acrylate, and lauryl acrylate. The acrylate hard monomer is selected from one or more of methyl methacrylate, ethyl methacrylate, isobornyl methacrylate, and acrylonitrile; The functional monomer is selected from one or more of acrylic acid, methacrylic acid, hydroxyethyl acrylate, glycidyl methacrylate, acrylamide, and N-hydroxymethylacrylamide; The tackifying resin is selected from one or more of the following: pentaerythritol rosin, hydrogenated rosin glycerol ester, terpene phenolic resin, C5 petroleum resin, and C9 petroleum resin. The photoinitiator is selected from one or more of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 1-hydroxycyclohexylphenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, and benzophenone; The thermal initiator is selected from one or more of azobisisobutyronitrile, azobisisoheptanenitrile, benzoyl peroxide, and di-tert-butyl peroxide; The curing accelerator is selected from one or more of triethylenediamine, N,N-dimethylbenzylamine, and 2,4,6-tris(dimethylaminomethyl)phenol; The solvent is selected from one or more of ethyl acetate, butyl acetate, toluene, xylene, acetone, butanone, and cyclohexanone.

[0019] The preparation method of ionic liquid functionalized core-shell nanoparticles in this embodiment includes the following steps: S1. Preparation of core layer emulsion: Add polybutadiene rubber emulsion to the reaction vessel, add deionized water to dilute to a solid content of 15% to 25%, heat to 60℃ to 75℃, add emulsifier sodium dodecyl sulfate, set the stirring speed to 300 to 500 r / min, and pre-emulsify for 20 to 40 min. S2. Shell Monomer Pre-emulsification: Soft acrylate monomers, hard acrylate monomers, and functional monomers are mixed in a mass ratio of (6-8):(2-3):(0.5-1.5). Tetraethyl orthosilicate and γ-methacryloyloxypropyltrimethoxysilane are added, wherein the amount of tetraethyl orthosilicate is 8%-15% of the total monomer mass, and the amount of γ-methacryloyloxypropyltrimethoxysilane is 3%-6% of the total monomer mass. Then, emulsifier and deionized water are added, and the mixture is emulsified at high speed at 800-1200 r / min for 30-50 min at room temperature to obtain a shell pre-emulsion. S3, Seed Polymerization: Add 20% to 30% of the total mass of the shell layer pre-emulsion to the core layer emulsion of step S1, add 0.3% to 0.6% of the total mass of the shell layer monomers as a thermal initiator, potassium persulfate, heat to 75℃ to 85℃, and react for 1 to 2 hours. S4. Shell growth polymerization: The remaining shell pre-emulsion is added dropwise to the reaction system at a uniform rate over 2-4 hours, with the temperature controlled at 80℃-90℃ during the addition. After the addition is complete, the reaction continues for 1-2 hours. Then, the temperature is raised to 85℃-95℃, and potassium persulfate of 0.1%-0.3% of the total mass of the shell monomers is added. The reaction is kept at this temperature for 1-2 hours. S5. Ionic liquid functionalization: 1-vinyl-3-butylimidazolium bromide ionic liquid was dissolved in an ethanol-water mixed solvent to prepare a solution with a mass concentration of 3% to 8%; the core-shell nanoparticle emulsion obtained in step S4 was cooled to 50℃ to 65℃, and the ionic liquid solution was slowly added dropwise under stirring at 200 to 400 r / min for 30 to 60 min; after the addition was complete, 1% to 3% of azobisisobutyronitrile (AIBN) was added as a grafting initiator, and the temperature was raised to 65℃ to 75℃ for 2 to 4 h; after the reaction was completed, the mixture was cooled to room temperature, demulsified, washed, and vacuum dried to obtain ionic liquid functionalized core-shell nanoparticles.

[0020] The method for preparing hyperbranched polyether-siloxane block copolymers in this embodiment is characterized by comprising the following steps: S1. Preparation of hyperbranched polyether polyols: Trimethylolpropane is used as the core molecule and is melt-polymerized with 2,2-dimethylolpropionic acid at a hydroxyl to carboxyl molar ratio of 1:(1.05-1.2). The reaction temperature is 140℃-160℃, and the mixture is stirred at 100-200 r / min under nitrogen protection. 2,2-dimethylolpropionic acid is added in batches with an interval of 30-60 min between each batch, and the total reaction time is 4-6 h. After the reaction is completed, the mixture is cooled to room temperature to obtain hyperbranched polyether polyols of generation 3-5. S2. Preparation of hydroxyl-terminated polydimethylsiloxane: Octamethylcyclotetrasiloxane and 1,3-bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane were mixed at a mass ratio of (8-12):1. Tetramethylammonium hydroxide was added as a catalyst, with the amount of catalyst being 0.05%-0.15% of the total mass of the reactants. The ring-opening polymerization reaction was carried out at 80℃-100℃ and a vacuum degree of -0.08--0.095MPa for 4-6 hours to obtain hydroxyl-terminated polydimethylsiloxane with a molecular weight of 2000-5000. S3. Block copolymerization reaction: The hyperbranched polyether polyol obtained in step S1 and the hydroxyl-terminated polydimethylsiloxane obtained in step S2 are mixed at a mass ratio of 1:(2-4), and toluene is added as a solvent to prepare a solution with a solid content of 30%-50%; isophorone diisocyanate is added as a coupling agent, and the amount of isophorone diisocyanate is 5%-10% of the total mass of the hyperbranched polyether polyol and the hydroxyl-terminated polydimethylsiloxane; dibutyltin dilaurate is added as a catalyst, and the amount of catalyst is 0.02%-0.05% of the total mass of the reactants; the temperature is raised to 70℃-85℃, and the reaction is carried out at a speed of 200-400 r / min for 3-5 h; after the reaction is completed, the solvent is removed by vacuum distillation to obtain the hyperbranched polyether-siloxane block copolymer.

[0021] A method for preparing a high-adhesion automotive explosion-proof film adhesive includes the following steps: S1. Preparation of prepolymer: Mix the soft acrylate monomer, hard acrylate monomer, and functional monomer according to the formula ratio, add 40% to 60% of the total mass of monomers to the reactor, add 50% to 70% of the total mass of solvent, heat to 70℃ to 80℃, and stir at 150 to 300 r / min for 10 to 20 min under nitrogen protection. S2. Initiating polymerization: Add 60% to 80% of the total mass of thermal initiator, raise the temperature to 75℃ to 85℃, react for 1 to 2 hours, and obtain the prepolymer; S3. Droplet polymerization: Prepare a mixed solution with the remaining monomer and solvent, and add it dropwise to the prepolymer of step S2 at a uniform rate over 2-3 hours. During the droplet addition, the temperature is controlled at 78℃-88℃. After the droplet addition is complete, add the remaining thermal initiator, raise the temperature to 80℃-90℃, and continue the reaction for 1.5-2.5 hours. S4. Introduction of functional components: Cool the reaction system to 50℃~65℃, add ionic liquid functionalized core-shell nanoparticles, and disperse them at high speed of 300~600r / min for 30~60min; then add hyperbranched polyether-siloxane block copolymer and stir at 200~400r / min for 20~40min. S5. Post-treatment: Add tackifying resin, heat to 60℃~75℃, stir and dissolve for 30~60min; cool to 40℃~55℃, add photoinitiator and curing accelerator, stir at 100~200r / min for 15~30min; finally add solvent to adjust viscosity, filter and discharge to obtain high adhesion vehicle explosion-proof film special adhesive.

[0022] In step S3 of this embodiment, after the dropwise polymerization is completed, the solid content of the reaction system is controlled at 45% to 60%, and the viscosity is controlled at 2000 to 5000 mPa·s.

[0023] In step S4 of this embodiment, the ionic liquid functionalized core-shell nanoparticles are added in the form of a dispersion of 10% to 20%, and the solvent of the dispersion is the same as that of the glue system.

[0024] Example 1:

[0025] A high-adhesion automotive explosion-proof film adhesive, comprising the following components by weight: 35 parts of acrylate soft monomer (isooctyl acrylate); 10 parts of acrylate hard monomer (methyl methacrylate); 4 parts of functional monomer (acrylic acid); Four portions of ionic liquid-functionalized core-shell nanoparticles; 2.5 parts of hyperbranched polyether-siloxane block copolymer; 7 parts of tackifying resin (pentaerythritol rosin); 1 part of photoinitiator (2,4,6-trimethylbenzoyl-diphenylphosphine oxide); 0.5 parts of thermal initiator (azobisisobutyronitrile); Curing accelerator (triethylenediamine) 0.4 parts; Solvent (ethyl acetate) 50 parts.

[0026] A method for preparing ionic liquid-functionalized core-shell nanoparticles includes the following steps: S1. Preparation of core layer emulsion: Add polybutadiene rubber emulsion to the reaction vessel, add deionized water to dilute to a solid content of 20%, heat to 65℃, add emulsifier sodium dodecyl sulfate, set the stirring speed to 400r / min, and pre-emulsify for 30min. S2. Shell Monomer Pre-emulsification: Soft acrylate monomers (isooctyl acrylate), hard acrylate monomers (methyl methacrylate), and functional monomers (acrylic acid) are mixed in a mass ratio of 7:2.5:1. Ethyl orthosilicate and γ-methacryloyloxypropyltrimethoxysilane are added, wherein the amount of ethyl orthosilicate is 10% of the total monomer mass and the amount of γ-methacryloyloxypropyltrimethoxysilane is 4% of the total monomer mass. Then, emulsifier and deionized water are added, and the mixture is emulsified at 1000 r / min for 40 min at room temperature to obtain a shell pre-emulsion. S3, Seed Polymerization: Add 25% of the shell pre-emulsion by mass of the shell monomers to the core emulsion of step S1, add 0.4% of the thermal initiator potassium persulfate by mass of the shell monomers, heat to 80°C, and react for 1.5 h. S4, Shell Growth Polymerization: The remaining shell pre-emulsion is added dropwise to the reaction system at a uniform rate over 3 hours, with the temperature controlled at 85°C during the addition. After the addition is complete, the reaction continues for 1.5 hours. Then, the temperature is raised to 90°C, and potassium persulfate accounting for 0.2% of the total mass of the shell monomers is added. The reaction is maintained at this temperature for 1.5 hours. S5. Ionic liquid functionalization: 1-vinyl-3-butylimidazolium bromide ionic liquid was dissolved in an ethanol-water mixed solvent to prepare a 5% (w / w) solution; the core-shell nanoparticle emulsion obtained in step S4 was cooled to 55°C, and the ionic liquid solution was slowly added dropwise under stirring at 300 r / min for 45 min; after the addition was complete, 2% (w / w) of azobisisobutyronitrile (AIBN) was added as a grafting initiator, the temperature was raised to 70°C, and the reaction was carried out for 3 h; after the reaction was completed, the mixture was cooled to room temperature, demulsified, washed, and vacuum dried to obtain ionic liquid functionalized core-shell nanoparticles.

[0027] A method for preparing hyperbranched polyether-siloxane block copolymers includes the following steps: S1. Preparation of hyperbranched polyether polyol: Trimethylolpropane was used as the core molecule and melt polycondensed with 2,2-dimethylolpropionic acid at a hydroxyl to carboxyl molar ratio of 1:1.1. The reaction temperature was 150℃, and the mixture was stirred at 150 r / min under nitrogen protection. 2,2-dimethylolpropionic acid was added in batches with an interval of 45 min between each batch, and the total reaction time was 5 h. After the reaction was completed, the mixture was cooled to room temperature to obtain a hyperbranched polyether polyol of generation 4. S2. Preparation of hydroxyl-terminated polydimethylsiloxane: Octamethylcyclotetrasiloxane and 1,3-bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane were mixed at a mass ratio of 10:1. Tetramethylammonium hydroxide was added as a catalyst at a mass of 0.1% of the total mass of the reactants. The ring-opening polymerization reaction was carried out at 90°C and a vacuum of -0.09 MPa for 5 h to obtain hydroxyl-terminated polydimethylsiloxane with a molecular weight of 3500. S3. Block copolymerization reaction: The hyperbranched polyether polyol obtained in step S1 and the hydroxyl-terminated polydimethylsiloxane obtained in step S2 are mixed at a mass ratio of 1:3. Toluene is added as a solvent to prepare a solution with a solid content of 40%. Isophorone diisocyanate is added as a coupling agent, with the amount of isophorone diisocyanate being 7% of the total mass of the hyperbranched polyether polyol and the hydroxyl-terminated polydimethylsiloxane. Dibutyltin dilaurate is added as a catalyst, with the amount of catalyst being 0.03% of the total mass of the reactants. The temperature is raised to 78°C, and the reaction is carried out at a speed of 300 r / min for 4 h. After the reaction is completed, the solvent is removed by vacuum distillation to obtain the hyperbranched polyether-siloxane block copolymer.

[0028] A method for preparing a high-adhesion automotive explosion-proof film adhesive includes the following steps: S1. Preparation of prepolymer: Mix the soft acrylate monomer (isooctyl acrylate), hard acrylate monomer (methyl methacrylate), and functional monomer (acrylic acid) according to the formula ratio. Add 50% of the total mass of monomers to the reaction vessel, then add 60% of the total mass of solvent (ethyl acetate), heat to 75°C, and stir at 200 r / min for 15 min under nitrogen protection. S2. Initiating polymerization: Add 70% of the total mass of thermal initiator (azobisisobutyronitrile), heat to 80℃, and react for 1.5h to obtain the prepolymer; S3, Droplet polymerization: Prepare a mixed solution with the remaining monomer and solvent, and add it dropwise to the prepolymer from step S2 at a uniform rate over 2.5 hours. The temperature is controlled at 82°C during the droplet addition. After the droplet addition is complete, add the remaining thermal initiator (azobisisobutyronitrile), raise the temperature to 85°C, and continue the reaction for 2 hours. S4. Introduction of functional components: Cool the reaction system to 55°C, add ionic liquid functionalized core-shell nanoparticles, and disperse at high speed of 450 r / min for 45 min; then add hyperbranched polyether-siloxane block copolymer and stir at 300 r / min for 30 min. S5. Post-treatment: Add tackifying resin (rosin pentaerythritol ester), heat to 65℃, and stir to dissolve for 45 min; cool to 45℃, add photoinitiator (2,4,6-trimethylbenzoyl-diphenylphosphine oxide) and curing accelerator (triethylenediamine), and stir at 150 r / min for 20 min; finally, add solvent (ethyl acetate) to adjust the viscosity, filter and discharge to obtain high adhesion automotive explosion-proof film special adhesive.

[0029] Example 2:

[0030] A high-adhesion automotive explosion-proof film adhesive, comprising the following components by weight: 30 parts of acrylate soft monomer (butyl acrylate); 8 parts of acrylate hard monomer (isobornyl methacrylate); 3 parts of functional monomer (glycidyl methacrylate); Two portions of ionic liquid-functionalized core-shell nanoparticles; 1.5 parts of hyperbranched polyether-siloxane block copolymer; 5 parts of tackifying resin (hydrogenated rosin glycerol ester); 0.5 parts of photoinitiator (1-hydroxycyclohexylphenyl ketone); 0.3 parts of thermal initiator (azobisisobutyronitrile); Curing accelerator (N,N-dimethylbenzylamine) 0.2 parts; Solvent (butyl acetate) 40 parts.

[0031] A method for preparing ionic liquid-functionalized core-shell nanoparticles includes the following steps: S1. Preparation of core layer emulsion: Add polybutadiene rubber emulsion to the reaction vessel, add deionized water to dilute to a solid content of 15%, heat to 60℃, add emulsifier sodium dodecyl sulfate, set the stirring speed to 300r / min, and pre-emulsify for 20min. S2. Shell Monomer Pre-emulsification: Soft acrylate monomers (butyl acrylate), hard acrylate monomers (isobornyl methacrylate), and functional monomers (glycidyl methacrylate) are mixed in a mass ratio of 6:3:1.5. Ethyl orthosilicate and γ-methacryloyloxypropyltrimethoxysilane are added, wherein the amount of ethyl orthosilicate is 8% of the total monomer mass and the amount of γ-methacryloyloxypropyltrimethoxysilane is 3% of the total monomer mass. Then, emulsifier and deionized water are added, and the mixture is emulsified at high speed of 800 r / min for 30 min at room temperature to obtain the shell pre-emulsion. S3, Seed Polymerization: Add 20% of the total mass of the shell layer pre-emulsion to the core layer emulsion of step S1, add 0.3% of the total mass of the shell layer monomers as thermal initiator potassium persulfate, heat to 75°C, and react for 1 hour. S4. Shell growth polymerization: The remaining shell pre-emulsion is added dropwise to the reaction system at a uniform rate over 2 hours, with the temperature controlled at 80°C during the dropwise addition. After the dropwise addition is completed, the reaction continues for 1 hour. Then, the temperature is raised to 85°C, and potassium persulfate accounting for 0.1% of the total mass of the shell monomers is added. The reaction is kept at this temperature for 1 hour. S5. Ionic liquid functionalization: 1-vinyl-3-butylimidazolium bromide ionic liquid was dissolved in an ethanol-water mixed solvent to prepare a 3% (w / w) solution; the core-shell nanoparticle emulsion obtained in step S4 was cooled to 50°C, and the ionic liquid solution was slowly added dropwise under stirring at 200 r / min for 30 min; after the addition was complete, 1% (w / w) of azobisisobutyronitrile (AIBN) was added as a grafting initiator, and the temperature was raised to 65°C for 2 h; after the reaction was completed, the mixture was cooled to room temperature, demulsified, washed, and vacuum dried to obtain ionic liquid functionalized core-shell nanoparticles.

[0032] A method for preparing hyperbranched polyether-siloxane block copolymers includes the following steps: S1. Preparation of hyperbranched polyether polyol: Trimethylolpropane was used as the core molecule and melt polycondensed with 2,2-dimethylolpropionic acid at a hydroxyl to carboxyl molar ratio of 1:1.05. The reaction temperature was 140℃, and the mixture was stirred at 100 r / min under nitrogen protection. 2,2-dimethylolpropionic acid was added in batches with an interval of 30 min between each batch, and the total reaction time was 4 h. After the reaction was completed, the mixture was cooled to room temperature to obtain a third-generation hyperbranched polyether polyol. S2. Preparation of hydroxyl-terminated polydimethylsiloxane: Octamethylcyclotetrasiloxane and 1,3-bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane were mixed at a mass ratio of 8:1. Tetramethylammonium hydroxide was added as a catalyst, with the amount of catalyst being 0.05% of the total mass of the reactants. The ring-opening polymerization reaction was carried out at 80°C and a vacuum degree of -0.08MPa for 4 hours to obtain hydroxyl-terminated polydimethylsiloxane with a molecular weight of 2000. S3. Block copolymerization reaction: The hyperbranched polyether polyol obtained in step S1 and the hydroxyl-terminated polydimethylsiloxane obtained in step S2 are mixed at a mass ratio of 1:2. Toluene is added as a solvent to prepare a solution with a solid content of 30%. Isophorone diisocyanate is added as a coupling agent, with the amount of isophorone diisocyanate being 5% of the total mass of the hyperbranched polyether polyol and the hydroxyl-terminated polydimethylsiloxane. Dibutyltin dilaurate is added as a catalyst, with the amount of catalyst being 0.02% of the total mass of the reactants. The temperature is raised to 70°C, and the reaction is carried out at a speed of 200 r / min for 3 h. After the reaction is completed, the solvent is removed by vacuum distillation to obtain the hyperbranched polyether-siloxane block copolymer.

[0033] A method for preparing a high-adhesion automotive explosion-proof film adhesive includes the following steps: S1. Preparation of prepolymer: Mix the soft acrylate monomer (butyl acrylate), hard acrylate monomer (isobornyl methacrylate), and functional monomer (glycidyl methacrylate) according to the formula ratio. Add 40% of the total mass of monomers to the reaction vessel, then add 50% of the total mass of solvent (butyl acetate), heat to 70°C, and stir at 150 r / min for 10 min under nitrogen protection. S2. Initiating polymerization: Add 60% of the total mass of thermal initiator (azobisisobutyronitrile), heat to 75℃, react for 1 hour, and obtain the prepolymer; S3, Droplet polymerization: Prepare a mixed solution with the remaining monomer and solvent, and add it dropwise to the prepolymer of step S2 at a uniform rate over 2 hours. The temperature is controlled at 78°C during the droplet addition. After the droplet addition is complete, add the remaining thermal initiator (azobisisoheptanenitrile), raise the temperature to 80°C, and continue the reaction for 1.5 hours. S4. Introduction of functional components: Cool the reaction system to 50°C, add ionic liquid functionalized core-shell nanoparticles, and disperse at high speed of 300 r / min for 30 min; then add hyperbranched polyether-siloxane block copolymer and stir at 200 r / min for 20 min. S5. Post-treatment: Add tackifying resin (hydrogenated rosin glycerol ester), heat to 60℃, and stir to dissolve for 30 min; cool to 40℃, add photoinitiator (1-hydroxycyclohexylphenyl ketone) and curing accelerator (N,N-dimethylbenzylamine), and stir at 100 r / min for 15 min; finally, add solvent (butyl acetate) to adjust the viscosity, filter and discharge to obtain high adhesion automotive explosion-proof film special adhesive.

[0034] Example 3:

[0035] A high-adhesion automotive explosion-proof film adhesive, comprising the following components by weight: 45 parts of acrylate soft monomer (isodecyl acrylate and lauryl acrylate mixed in a mass ratio of 1:1); 15 parts of acrylate hard monomer (ethyl methacrylate and acrylonitrile mixed in a mass ratio of 2:1); 6 parts of functional monomer (N-hydroxymethylacrylamide and hydroxyethyl acrylate mixed in a 1:1 mass ratio); Six parts of ionic liquid-functionalized core-shell nanoparticles; four parts of hyperbranched polyether-siloxane block copolymer. 10 parts of tackifying resin (a mixture of terpene phenolic resin and C5 petroleum resin in a mass ratio of 1:1); 1.5 parts of photoinitiator (a mixture of 2-hydroxy-2-methyl-1-phenyl-1-propanone and benzophenone in a 1:1 mass ratio); 0.8 parts of thermal initiator (benzoyl peroxide); 0.6 parts of curing accelerator (2,4,6-tris(dimethylaminomethyl)phenol); 60 parts of solvent (toluene and methyl ethyl ketone mixed at a mass ratio of 1:1).

[0036] A method for preparing ionic liquid-functionalized core-shell nanoparticles includes the following steps: S1. Preparation of core layer emulsion: Add polybutadiene rubber emulsion to the reaction vessel, add deionized water to dilute to a solid content of 25%, heat to 75°C, add emulsifier sodium dodecyl sulfate, set the stirring speed to 500 r / min, and pre-emulsify for 40 min. S2. Shell Monomer Pre-emulsification: Soft acrylate monomers (isodecyl acrylate and lauryl acrylate mixed at a mass ratio of 1:1), hard acrylate monomers (ethyl methacrylate and acrylonitrile mixed at a mass ratio of 2:1), and functional monomers (N-hydroxymethylacrylamide and hydroxyethyl acrylate mixed at a mass ratio of 1:1) are mixed at a mass ratio of 8:2:0.5. Tetraethyl orthosilicate and γ-methacryloyloxypropyltrimethoxysilane are added, wherein the amount of tetraethyl orthosilicate is 15% of the total monomer mass and the amount of γ-methacryloyloxypropyltrimethoxysilane is 6% of the total monomer mass. Then, emulsifier and deionized water are added, and the mixture is emulsified at a high speed of 1200 r / min for 50 min at room temperature to obtain the shell pre-emulsion. S3, Seed Polymerization: Add 30% of the total mass of the shell layer pre-emulsion to the core layer emulsion of step S1, add 0.6% of the total mass of the shell layer monomers as a thermal initiator potassium persulfate, heat to 85°C, and react for 2 hours. S4, Shell Growth Polymerization: The remaining shell pre-emulsion is added dropwise to the reaction system at a uniform rate over 4 hours, with the temperature controlled at 90°C during the addition. After the addition is complete, the reaction continues for 2 hours. Then, the temperature is raised to 95°C, and potassium persulfate accounting for 0.3% of the total mass of the shell monomers is added. The reaction is kept at this temperature for 2 hours. S5. Ionic liquid functionalization: 1-vinyl-3-butylimidazolium bromide ionic liquid was dissolved in an ethanol-water mixed solvent to prepare a solution with a mass concentration of 8%; the core-shell nanoparticle emulsion obtained in step S4 was cooled to 65°C, and the ionic liquid solution was slowly added dropwise under stirring at 400 r / min for 60 min; after the addition was complete, 3% azobisisobutyronitrile (AIBN) was added as a grafting initiator, the temperature was raised to 75°C, and the reaction was carried out for 4 h; after the reaction was completed, the mixture was cooled to room temperature, demulsified, washed, and vacuum dried to obtain ionic liquid functionalized core-shell nanoparticles.

[0037] A method for preparing hyperbranched polyether-siloxane block copolymers includes the following steps: S1. Preparation of hyperbranched polyether polyol: Trimethylolpropane was used as the core molecule and melt polycondensed with 2,2-dimethylolpropionic acid at a hydroxyl to carboxyl molar ratio of 1:1.2. The reaction temperature was 160℃, and the mixture was stirred at 200 r / min under nitrogen protection. 2,2-dimethylolpropionic acid was added in batches with an interval of 60 min between each batch, and the total reaction time was 6 h. After the reaction was completed, the mixture was cooled to room temperature to obtain a hyperbranched polyether polyol of generation 5. S2. Preparation of hydroxyl-terminated polydimethylsiloxane: Octamethylcyclotetrasiloxane and 1,3-bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane were mixed at a mass ratio of 12:1. Tetramethylammonium hydroxide was added as a catalyst, with the amount of catalyst being 0.15% of the total mass of the reactants. The ring-opening polymerization reaction was carried out at 100℃ and a vacuum degree of -0.095MPa for 6 hours to obtain hydroxyl-terminated polydimethylsiloxane with a molecular weight of 5000. S3. Block copolymerization reaction: The hyperbranched polyether polyol obtained in step S1 and the hydroxyl-terminated polydimethylsiloxane obtained in step S2 are mixed at a mass ratio of 1:4. Toluene is added as a solvent to prepare a solution with a solid content of 50%. Isophorone diisocyanate is added as a coupling agent, with the amount of isophorone diisocyanate being 10% of the total mass of the hyperbranched polyether polyol and the hydroxyl-terminated polydimethylsiloxane. Dibutyltin dilaurate is added as a catalyst, with the amount of catalyst being 0.05% of the total mass of the reactants. The temperature is raised to 85°C, and the reaction is carried out at a speed of 400 r / min for 5 h. After the reaction is completed, the solvent is removed by vacuum distillation to obtain the hyperbranched polyether-siloxane block copolymer.

[0038] A method for preparing a high-adhesion automotive explosion-proof film adhesive includes the following steps: S1. Preparation of prepolymer: Soft acrylate monomers (isodecyl acrylate and lauryl acrylate mixed in a mass ratio of 1:1), hard acrylate monomers (ethyl methacrylate and acrylonitrile mixed in a mass ratio of 2:1), and functional monomers (N-hydroxymethylacrylamide and hydroxyethyl acrylate mixed in a mass ratio of 1:1) are mixed according to the formula ratio. 60% of the total mass of monomers is added to the reaction vessel, and then 70% of the total mass of solvent (toluene and butanone mixed in a mass ratio of 1:1) is added. The temperature is raised to 80°C, and the mixture is stirred at 300 r / min for 20 min under nitrogen protection. S2. Initiating polymerization: Add 80% of the total mass of thermal initiator (benzoyl peroxide), heat to 85℃, react for 2 hours to obtain the prepolymer; S3, Droplet polymerization: Prepare a mixed solution with the remaining monomer and solvent, and add it dropwise to the prepolymer from step S2 at a uniform rate over 3 hours. During the droplet addition, the temperature is controlled at 88°C. After the droplet addition is complete, add the remaining thermal initiator (benzoyl peroxide), raise the temperature to 90°C, and continue the reaction for 2.5 hours. S4. Introduction of functional components: Cool the reaction system to 65°C, add ionic liquid functionalized core-shell nanoparticles, and disperse at high speed of 600 r / min for 60 min; then add hyperbranched polyether-siloxane block copolymer and stir at 400 r / min for 40 min. S5. Post-treatment: Add tackifying resin (terpene phenolic resin and C5 petroleum resin mixed in a mass ratio of 1:1), heat to 75℃, and stir to dissolve for 60 min; cool to 55℃, add photoinitiator (2-hydroxy-2-methyl-1-phenyl-1-propanone and benzophenone mixed in a mass ratio of 1:1) and curing accelerator (2,4,6-tris(dimethylaminomethyl)phenol), and stir at 200 r / min for 30 min; finally, add solvent (toluene and butanone mixed in a mass ratio of 1:1) to adjust the viscosity, filter and discharge to obtain high adhesion automotive explosion-proof film special adhesive.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special adhesive for high-adhesion vehicle explosion-proof film, characterized in that, By mass, it includes the following components: 30-45 parts of acrylate soft monomer; 8-15 parts of acrylate hard monomer; 3 to 6 parts of functional monomer; 2-6 parts of ionic liquid-functionalized core-shell nanoparticles; 1.5 to 4 parts of hyperbranched polyether-siloxane block copolymer; 5-10 parts of tackifying resin; Photoinitiator 0.5–1.5 parts; 0.3–0.8 parts of thermal initiator; Curing accelerator: 0.2–0.6 parts; Solvent 40-60 parts; The ionic liquid functionalized core-shell nanoparticles are core-shell structured nanoparticles with a silica-acrylate composite as the shell and polybutadiene rubber as the core, and which are functionalized by imidazole ionic liquid. The hyperbranched polyether-siloxane block copolymer is an amphiphilic block copolymer with hyperbranched polyether as the branching core and polydimethylsiloxane as the linear block.

2. The high-adhesion automotive explosion-proof film adhesive according to claim 1, characterized in that, The acrylate soft monomer is selected from one or more of isooctyl acrylate, butyl acrylate, isodecanyl acrylate, and lauryl acrylate; The acrylate hard monomer is selected from one or more of methyl methacrylate, ethyl methacrylate, isobornyl methacrylate, and acrylonitrile; The functional monomer is selected from one or more of acrylic acid, methacrylic acid, hydroxyethyl acrylate, glycidyl methacrylate, acrylamide, and N-hydroxymethylacrylamide; The tackifying resin is selected from one or more of the following: pentaerythritol rosin, hydrogenated rosin glycerol ester, terpene phenolic resin, C5 petroleum resin, and C9 petroleum resin. The photoinitiator is selected from one or more of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 1-hydroxycyclohexylphenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, and benzophenone; The thermal initiator is selected from one or more of azobisisobutyronitrile, azobisisoheptanenitrile, benzoyl peroxide, and di-tert-butyl peroxide; The curing accelerator is selected from one or more of triethylenediamine, N,N-dimethylbenzylamine, and 2,4,6-tris(dimethylaminomethyl)phenol; The solvent is selected from one or more of ethyl acetate, butyl acetate, toluene, xylene, acetone, butanone, and cyclohexanone.

3. The high-adhesion automotive explosion-proof film adhesive according to claim 1, characterized in that, The method for preparing the ionic liquid functionalized core-shell nanoparticles includes the following steps: S1. Preparation of core layer emulsion: Add polybutadiene rubber emulsion to the reaction vessel, add deionized water to dilute to a solid content of 15% to 25%, heat to 60℃ to 75℃, add emulsifier sodium dodecyl sulfate, set the stirring speed to 300 to 500 r / min, and pre-emulsify for 20 to 40 min. S2. Shell Monomer Pre-emulsification: Soft acrylate monomers, hard acrylate monomers, and functional monomers are mixed in a mass ratio of (6-8):(2-3):(0.5-1.5). Tetraethyl orthosilicate and γ-methacryloyloxypropyltrimethoxysilane are added, wherein the amount of tetraethyl orthosilicate is 8%-15% of the total monomer mass, and the amount of γ-methacryloyloxypropyltrimethoxysilane is 3%-6% of the total monomer mass. Then, emulsifier and deionized water are added, and the mixture is emulsified at high speed at 800-1200 r / min for 30-50 min at room temperature to obtain a shell pre-emulsion. S3, Seed Polymerization: Add 20% to 30% of the total mass of the shell layer pre-emulsion to the core layer emulsion of step S1, add 0.3% to 0.6% of the total mass of the shell layer monomers as a thermal initiator, potassium persulfate, heat to 75℃ to 85℃, and react for 1 to 2 hours. S4. Shell growth polymerization: The remaining shell pre-emulsion is added dropwise to the reaction system at a uniform rate over 2-4 hours, with the temperature controlled at 80℃-90℃ during the addition. After the addition is complete, the reaction continues for 1-2 hours. Then, the temperature is raised to 85℃-95℃, and potassium persulfate of 0.1%-0.3% of the total mass of the shell monomers is added. The reaction is kept at this temperature for 1-2 hours. S5. Ionic liquid functionalization: 1-vinyl-3-butylimidazolium bromide ionic liquid was dissolved in an ethanol-water mixed solvent to prepare a solution with a mass concentration of 3% to 8%; the core-shell nanoparticle emulsion obtained in step S4 was cooled to 50℃ to 65℃, and the ionic liquid solution was slowly added dropwise under stirring at 200 to 400 r / min for 30 to 60 min; after the addition was complete, 1% to 3% of azobisisobutyronitrile (AIBN) was added as a grafting initiator, and the temperature was raised to 65℃ to 75℃ for 2 to 4 h; after the reaction was completed, the mixture was cooled to room temperature, demulsified, washed, and vacuum dried to obtain ionic liquid functionalized core-shell nanoparticles.

4. The high-adhesion automotive explosion-proof film adhesive according to claim 1, characterized in that, The preparation method of the hyperbranched polyether-siloxane block copolymer includes the following steps: S1. Preparation of hyperbranched polyether polyols: Trimethylolpropane is used as the core molecule and is melt-polymerized with 2,2-dimethylolpropionic acid at a hydroxyl to carboxyl molar ratio of 1:(1.05-1.2). The reaction temperature is 140℃-160℃, and the mixture is stirred at 100-200 r / min under nitrogen protection. 2,2-dimethylolpropionic acid is added in batches with an interval of 30-60 min between each batch, and the total reaction time is 4-6 h. After the reaction is completed, the mixture is cooled to room temperature to obtain hyperbranched polyether polyols of generation 3-5. S2. Preparation of hydroxyl-terminated polydimethylsiloxane: Octamethylcyclotetrasiloxane and 1,3-bis(3-hydroxypropyl)-1,1,3,3-tetramethyldisiloxane were mixed at a mass ratio of (8-12):

1. Tetramethylammonium hydroxide was added as a catalyst, with the amount of catalyst being 0.05%-0.15% of the total mass of the reactants. The ring-opening polymerization reaction was carried out at 80℃-100℃ and a vacuum degree of -0.08--0.095MPa for 4-6 hours to obtain hydroxyl-terminated polydimethylsiloxane with a molecular weight of 2000-5000. S3. Block copolymerization reaction: The hyperbranched polyether polyol obtained in step S1 and the hydroxyl-terminated polydimethylsiloxane obtained in step S2 are mixed at a mass ratio of 1:(2-4), and toluene is added as a solvent to prepare a solution with a solid content of 30%-50%; isophorone diisocyanate is added as a coupling agent, and the amount of isophorone diisocyanate is 5%-10% of the total mass of the hyperbranched polyether polyol and the hydroxyl-terminated polydimethylsiloxane; dibutyltin dilaurate is added as a catalyst, and the amount of catalyst is 0.02%-0.05% of the total mass of the reactants; the temperature is raised to 70℃-85℃, and the reaction is carried out at a speed of 200-400 r / min for 3-5 h; after the reaction is completed, the solvent is removed by vacuum distillation to obtain the hyperbranched polyether-siloxane block copolymer.

5. A method for preparing a high-adhesion automotive explosion-proof film adhesive according to any one of claims 1-4, characterized in that, Includes the following steps: S1. Preparation of prepolymer: Mix the soft acrylate monomer, hard acrylate monomer, and functional monomer according to the formula ratio, add 40% to 60% of the total mass of monomers to the reactor, add 50% to 70% of the total mass of solvent, heat to 70℃ to 80℃, and stir at 150 to 300 r / min for 10 to 20 min under nitrogen protection. S2. Initiating polymerization: Add 60% to 80% of the total mass of thermal initiator, raise the temperature to 75℃ to 85℃, react for 1 to 2 hours, and obtain the prepolymer; S3. Droplet polymerization: Prepare a mixed solution with the remaining monomer and solvent, and add it dropwise to the prepolymer of step S2 at a uniform rate over 2-3 hours. During the droplet addition, the temperature is controlled at 78℃-88℃. After the droplet addition is complete, add the remaining thermal initiator, raise the temperature to 80℃-90℃, and continue the reaction for 1.5-2.5 hours. S4. Introduction of functional components: Cool the reaction system to 50℃~65℃, add ionic liquid functionalized core-shell nanoparticles, and disperse them at high speed of 300~600r / min for 30~60min; then add hyperbranched polyether-siloxane block copolymer and stir at 200~400r / min for 20~40min. S5. Post-treatment: Add tackifying resin, heat to 60℃~75℃, stir and dissolve for 30~60min; cool to 40℃~55℃, add photoinitiator and curing accelerator, stir at 100~200r / min for 15~30min; finally add solvent to adjust viscosity, filter and discharge to obtain high adhesion vehicle explosion-proof film special adhesive.

6. The method for preparing a high-adhesion automotive explosion-proof film adhesive according to claim 5, characterized in that, After the dropwise polymerization is completed in step S3, the solid content of the reaction system is controlled at 45% to 60%, and the viscosity is controlled at 2000 to 5000 mPa·s.

7. The method for preparing a high-adhesion automotive explosion-proof film adhesive according to claim 5, characterized in that, In step S4, the ionic liquid functionalized core-shell nanoparticles are added in the form of a dispersion of 10% to 20%, and the solvent of the dispersion is the same as that of the glue system.