CN111440586B - Environment-friendly high-strength ultraviolet-curing acrylate pressure-sensitive adhesive and preparation method thereof - Google Patents
Environment-friendly high-strength ultraviolet-curing acrylate pressure-sensitive adhesive and preparation method thereof Download PDFInfo
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- CN111440586B CN111440586B CN202010158344.0A CN202010158344A CN111440586B CN 111440586 B CN111440586 B CN 111440586B CN 202010158344 A CN202010158344 A CN 202010158344A CN 111440586 B CN111440586 B CN 111440586B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
An environment-friendly high-intensity ultraviolet curing acrylate pressure-sensitive adhesive and a preparation method thereof relate to an acrylate pressure-sensitive adhesive and a preparation method thereof. The invention aims to solve the problems that a large amount of solvent is used in the preparation process of the existing solvent-based pressure-sensitive adhesive to pollute the environment and the prepared pressure-sensitive adhesive has low strength. The pressure-sensitive adhesive is prepared from a nano-modified polyurethane acrylate oligomer, a reactive diluent, an adhesion promoter and a photoinitiator. The preparation method comprises the following steps: firstly, weighing; and secondly, mixing the reactive diluent, the nano-modified polyurethane acrylate oligomer, the photoinitiator and the adhesion promoter in sequence. According to the invention, hydroxyl-containing nanoparticles are introduced to participate in the reaction during the synthesis of the nano-modified polyurethane acrylate oligomer, and the adhesion promoter is introduced, so that the peel strength is obviously improved. The invention can obtain the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive.
Description
Technical Field
The invention relates to acrylate pressure-sensitive adhesive and a preparation method thereof.
Background
Pressure-sensitive adhesive is a kind of pressure-sensitive adhesive, and can be stuck on other surfaces by applying proper pressure when in use. With the continuous improvement of environmental awareness and technical requirements of people, research and development of environment-friendly and high-performance pressure-sensitive adhesives become a research hotspot. The ultraviolet curing pressure-sensitive adhesive is a novel energy-saving environment-friendly pressure-sensitive adhesive and has the characteristics of high curing speed, low energy consumption, no pollution, good water resistance, good heat resistance and the like. The ultraviolet curing pressure-sensitive adhesive not only overcomes the defects of serious pollution of solvent pressure-sensitive adhesives, poor water resistance and large energy consumption of water-based pressure-sensitive adhesives, but also overcomes the defects of easy aging and non-high temperature resistance of hot-melt pressure-sensitive adhesives.
In order to improve the bonding strength of the pressure-sensitive adhesive, the acrylate pressure-sensitive adhesive needs to be modified. In Chinese patent CN101979454B, hard acrylate monomer and soft acrylate monomer are used together with MQ silicone resin to prepare the high-strength heat-resistant silicone resin modified acrylate pressure-sensitive adhesive, and the peel strength at 180 ℃ at room temperature reaches 15N/25 mm-18N/25 mm. However, the pressure-sensitive adhesive contains a large amount of solvent, so that the environment is polluted in the coating process, and the crosslinking of the pressure-sensitive adhesive consumes time and energy and needs to be dried for 2 to 4 hours at the temperature of between 70 and 100 ℃. Many reports of ultraviolet light curing acrylate pressure-sensitive adhesives exist, and the Tangmingfeng in Chinese patent CN101824280B utilizes a flexible polymer to be mixed with an acrylate monomer, inorganic nano particles and a photoinitiator to prepare the ultraviolet light curing pressure-sensitive adhesive. Because the nano particles are only physically mixed and no proper auxiliary agent is used for improving the performance, the 180 DEG peel strength of the prepared adhesive tape is only about 6.5N/25 mm.
Disclosure of Invention
The invention aims to solve the problems that a large amount of solvent is used to pollute the environment in the preparation process of the existing solvent-based pressure-sensitive adhesive and the prepared pressure-sensitive adhesive has low strength, and provides an environment-friendly high-strength ultraviolet-curing acrylate pressure-sensitive adhesive and a preparation method thereof.
The environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive is prepared from 30-70 parts by weight of nano modified urethane acrylate oligomer, 30-70 parts by weight of reactive diluent, 1-3 parts by weight of adhesion promoter and 0.2-5 parts by weight of photoinitiator.
A preparation method of an environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive comprises the following steps:
weighing 30-70 parts of nano modified polyurethane acrylate oligomer, 30-70 parts of reactive diluent, 1-3 parts of adhesion promoter and 0.2-5 parts of photoinitiator according to parts by weight;
secondly, adding 30-70 parts of reactive diluent weighed in the step one into a container under normal temperature and normal pressure, uniformly mixing, adding 30-70 parts of nano-modified polyurethane acrylate oligomer under stirring, stirring until the nano-modified polyurethane acrylate oligomer is completely dissolved, adding 0.2-5 parts of photoinitiator into the container, heating to 35-45 ℃, stirring at 35-45 ℃ until the photoinitiator is completely dissolved, adding 1-3 parts of adhesion promoter into the container, and continuously stirring at 35-45 ℃ for 0.5-1 h to obtain the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive.
In the process of preparing the acrylate pressure-sensitive adhesive by the conventional solvent method, a large amount of organic solvent can be volatilized to pollute the environment, and the environment-friendly acrylate pressure-sensitive adhesive capable of being cured by ultraviolet light is prepared by synthesizing the nano modified polyurethane acrylate oligomer and mixing the nano modified polyurethane acrylate oligomer with components such as an active diluent, a photoinitiator, an adhesion promoter and the like; in the process of coating the pressure-sensitive adhesive, the crosslinking reaction of the pressure-sensitive adhesive can be initiated by applying ultraviolet irradiation, and the pressure-sensitive adhesive product with certain strength is prepared. In the process of synthesizing the polyurethane acrylate oligomer, the inorganic nano particles containing hydroxyl are introduced to participate in the reaction, so that the crosslinking degree of a pressure-sensitive adhesive product is improved, and meanwhile, some rigid stress bearing points are provided, and the bonding performance and the mechanical property of the pressure-sensitive adhesive are improved; the adhesion promoter is added into the system, so that the peel strength of the pressure-sensitive adhesive is further obviously improved.
Compared with the prior art, the invention has the advantages that:
1. the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive prepared by the invention can be crosslinked and cured by ultraviolet light, overcomes the defects of serious pollution of solvent type pressure-sensitive adhesives, poor water resistance and large energy consumption of water-based pressure-sensitive adhesives, and also overcomes the defects of easy aging and non-high temperature resistance of hot-melt pressure-sensitive adhesives;
2. according to the invention, the inorganic nanoparticles containing hydroxyl are added in the process of synthesizing the polyurethane acrylate oligomer, the hydroxyl on the surfaces of the inorganic nanoparticles is utilized to react with isocyanate groups in a system, so that the crosslinking degree of a pressure-sensitive adhesive product is improved, and meanwhile, rigid stress bearing points are introduced, so that the purpose of improving the peeling strength of the pressure-sensitive adhesive is achieved;
3. the adhesion promoter is added into the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive prepared by the invention, so that the peel strength of the pressure-sensitive adhesive can be further improved, and the peel strength of the prepared environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive at 180 ℃ can reach 20N/25 mm-28N/25 mm.
The invention can obtain the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive.
Detailed Description
The first embodiment is as follows: the embodiment is that the environment-friendly high-intensity ultraviolet light curing acrylate pressure-sensitive adhesive is prepared by 30 to 70 parts of nano modified polyurethane acrylate oligomer, 30 to 70 parts of reactive diluent, 1 to 3 parts of adhesion promoter and 0.2 to 5 parts of photoinitiator according to the parts by weight.
The second embodiment is as follows: the present embodiment differs from the present embodiment in that: the nano-modified polyurethane acrylate oligomer is prepared by the following steps:
adding 0.1mol of glycol subjected to vacuum dehydration into a four-mouth bottle provided with a stirrer, a thermometer and a dropping funnel, heating to 60-80 ℃, adding an organic tin catalyst accounting for 0.05-0.3% of the total mass of the glycol under stirring, then dropwise adding 0.12-0.2 mol of diisocyanate monomer, reacting for 3-6 h at 60-80 ℃, then adding an ethyl acetate solution of inorganic nanoparticles containing hydroxyl accounting for 1-10% of the total mass of the glycol, reacting for 0.5-2 h at 60-80 ℃, then adding 0.1-0.2 mol of acrylate monomer containing hydroxyl, reacting for 1-1.5 h at 60-80 ℃, and then distilling under reduced pressure at 40-50 ℃ to remove the ethyl acetate in the system, thus obtaining the nano-modified polyurethane acrylate oligomer. Other steps are the same as in the first embodiment.
The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: the dihydric alcohol is one or more of polypropylene glycol PPG-600, polypropylene glycol PPG-1000, polypropylene glycol PPG-1500, polypropylene glycol PPG-2000, polypropylene glycol PPG-3000 and polypropylene glycol PPG-4000; the organic tin catalyst is dibutyltin dilaurate, stannous octoate, dibutyltin dilaurate or dibutyltin diacetate; the diisocyanate monomer is one or a mixture of more of toluene diisocyanate, 1, 6-hexamethylene diisocyanate, isophorone diisocyanate, 4-diisocyanate dicyclohexylmethane and diphenylmethane diisocyanate. The other steps are the same as in the first or second embodiment.
The fourth concrete implementation mode: the difference between this embodiment and one of the first to third embodiments is as follows: the mass fraction of the ethyl acetate solution of the inorganic nanoparticles containing hydroxyl is 0.2-2%, and the inorganic nanoparticles containing hydroxyl are one or a mixture of several of nano silicon dioxide particles, nano graphene oxide, nano aluminum oxide and nano titanium dioxide. The other steps are the same as those in the first to third embodiments.
The fifth concrete implementation mode: the difference between this embodiment and one of the first to fourth embodiments is: the hydroxyl-containing acrylate monomer is one or a mixture of more of acrylic acid-2-hydroxyethyl, acrylic acid-2-hydroxypropyl, hydroxypropyl methacrylate and hydroxyethyl methacrylate. The other steps are the same as those in the first to fourth embodiments.
The sixth specific implementation mode: the difference between this embodiment and one of the first to fifth embodiments is as follows: the active diluent is one or a mixture of more of hydroxyethyl acrylate, hydroxyethyl methacrylate, isobornyl acrylate, isobornyl methacrylate, butyl acrylate, vinyl acetate, tripropylene glycol diacrylate, diethylene glycol diacrylate, 1, 6-hexanediol diacrylate, diethylene glycol diacrylate phthalate, tripropylene glycol diacrylate, polyethylene glycol diacrylate, neopentyl glycol diacrylate, propoxylated neopentyl glycol diacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate and pentaerythritol triacrylate. The other steps are the same as those in the first to fifth embodiments.
The seventh embodiment: the difference between this embodiment and one of the first to sixth embodiments is: the adhesion promoter is 2-methyl-2-acrylic acid-2-hydroxyethyl phosphate or 2-methacryloyloxyethyl phosphate. The other steps are the same as those in the first to sixth embodiments.
The specific implementation mode is eight: the difference between this embodiment and one of the first to seventh embodiments is: the photoinitiator is alpha, alpha' -dimethoxy-alpha-phenylacetophenone, alpha-diethoxyacetophenone, 2-hydroxy-2-methyl-1- [4- (2-hydroxyethoxy) phenyl ] -1-acetone, 2-hydroxy-2-methyl-1-phenyl-1-propyl ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholinyl-1-acetone or 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide. The other steps are the same as those in the first to seventh embodiments.
The specific implementation method nine: the difference between this embodiment and the first to eighth embodiments is: the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive is prepared from 50-60 parts by weight of nano modified urethane acrylate oligomer, 40-50 parts by weight of reactive diluent, 2-3 parts by weight of adhesion promoter and 1-2 parts by weight of photoinitiator. The other steps are the same as those in the first to eighth embodiments.
The detailed implementation mode is ten: the embodiment is a preparation method of an environment-friendly high-intensity ultraviolet curing acrylate pressure-sensitive adhesive, which is completed according to the following steps:
weighing 30-70 parts of nano modified polyurethane acrylate oligomer, 30-70 parts of reactive diluent, 1-3 parts of adhesion promoter and 0.2-5 parts of photoinitiator according to parts by weight;
secondly, adding 30-70 parts of reactive diluent weighed in the step one into a container under normal temperature and normal pressure, uniformly mixing, adding 30-70 parts of nano-modified polyurethane acrylate oligomer under stirring, stirring until the nano-modified polyurethane acrylate oligomer is completely dissolved, adding 0.2-5 parts of photoinitiator into the container, heating to 35-45 ℃, stirring at 35-45 ℃ until the photoinitiator is completely dissolved, adding 1-3 parts of adhesion promoter into the container, and continuously stirring at 35-45 ℃ for 0.5-1 h to obtain the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive.
Compared with the prior art, the embodiment has the advantages that:
1. the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive prepared by the embodiment can be crosslinked and cured by ultraviolet light, overcomes the defects of serious pollution of a solvent type pressure-sensitive adhesive, poor water resistance and high energy consumption of a water-based pressure-sensitive adhesive, and also overcomes the defects of easy aging and non-high temperature resistance of a hot-melt pressure-sensitive adhesive;
2. in the embodiment, the inorganic nanoparticles containing hydroxyl are added in the process of synthesizing the polyurethane acrylate oligomer, the hydroxyl on the surfaces of the inorganic nanoparticles is utilized to react with isocyanate groups in a system, so that the crosslinking degree of a pressure-sensitive adhesive product is improved, and meanwhile, rigid stress bearing points are introduced, so that the aim of improving the peeling strength of the pressure-sensitive adhesive is fulfilled;
3. the adhesion promoter is added into the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive prepared by the embodiment, so that the peel strength of the pressure-sensitive adhesive can be further improved, and the peel strength of the prepared environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive at 180 ℃ can reach 20N/25 mm-28N/25 mm.
The embodiment can obtain the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive.
The following examples were used to demonstrate the beneficial effects of the present invention:
the first embodiment is as follows: a preparation method of an environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive comprises the following steps:
weighing 50 parts of nano modified polyurethane acrylate oligomer, 50 parts of reactive diluent, 3 parts of adhesion promoter and 2 parts of photoinitiator according to parts by weight;
the reactive diluent in the first step is a mixture of hydroxyethyl acrylate, tripropylene glycol diacrylate, polyethylene glycol diacrylate and trimethylolpropane triacrylate, wherein the mass ratio of the hydroxyethyl acrylate to the tripropylene glycol diacrylate to the polyethylene glycol diacrylate to the trimethylolpropane triacrylate is 92:3:3: 2;
the adhesion promoter in the first step is 2-methyl-2-acrylic acid-2-hydroxyethyl phosphate;
the photoinitiator in the first step is alpha, alpha-diethoxyacetophenone;
the nanometer modified polyurethane acrylate oligomer in the first step is prepared according to the following steps:
adding 0.1mol of vacuum dehydrated dihydric alcohol into a four-mouth bottle provided with a stirrer, a thermometer and a dropping funnel, heating to 80 ℃, adding an organic tin catalyst accounting for 0.1 percent of the total mass of the dihydric alcohol under the stirring condition, then dropwise adding 0.15mol of diisocyanate monomer, reacting for 4 hours at 80 ℃, then adding an ethyl acetate solution of inorganic nanoparticles containing hydroxyl accounting for 1 percent of the total mass of the dihydric alcohol, reacting for 0.5 hours at 80 ℃, then adding 0.1mol of acrylate monomer containing hydroxyl, reacting for 1 hour at 80 ℃, and then distilling under reduced pressure at 50 ℃ to remove ethyl acetate in the system to obtain a nano modified polyurethane acrylate oligomer;
the dihydric alcohol is a mixture of PPG-1000, polypropylene glycol PPG-1500 and polypropylene glycol PPG-2000, wherein the weight ratio of PPG-1000, polypropylene glycol PPG-1500 and polypropylene glycol PPG-2000 is 3:4: 3;
the organic tin catalyst is dibutyltin diacetate;
the diisocyanate monomer is 1, 6-hexamethylene diisocyanate;
the mass fraction of the ethyl acetate solution of the inorganic nanoparticles containing hydroxyl is 1%, and the inorganic nanoparticles containing hydroxyl are nano silicon dioxide;
the hydroxyl-containing acrylate monomer is 2-hydroxyethyl acrylate;
secondly, adding 50 parts of the reactive diluent weighed in the step one into a container at normal temperature and normal pressure, uniformly mixing, adding 50 parts of the nano-modified polyurethane acrylate oligomer under stirring, stirring until the nano-modified polyurethane acrylate oligomer is completely dissolved, adding 2 parts of a photoinitiator into the container, heating to 40 ℃, stirring at 40 ℃ until the photoinitiator is completely dissolved, adding 3 parts of an adhesion promoter into the container, and continuously stirring at 40 ℃ for 0.5h to obtain the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive.
Example two: the present embodiment is different from the first embodiment in that: the inorganic nano-particles containing hydroxyl are nano-alumina. The rest is the same as the first embodiment.
Example three: the present embodiment is different from the first embodiment in that: the reactive diluent is a mixture of isobornyl acrylate, isobornyl methacrylate, polyethylene glycol diacrylate, neopentyl glycol diacrylate, trimethylolpropane triacrylate and pentaerythritol triacrylate, wherein the mass ratio of isobornyl acrylate, isobornyl methacrylate, polyethylene glycol diacrylate, neopentyl glycol diacrylate, trimethylolpropane triacrylate and pentaerythritol triacrylate is 40:50:4:3:1: 2. The rest is the same as the first embodiment.
Example four: the present embodiment is different from the first embodiment in that: the adhesion promoter is 2-methacryloyloxyethyl phosphate. The rest is the same as the first embodiment.
Example five: the present embodiment is different from the first embodiment in that: 2-methyl-1- (4-methylthiophenyl) -2-morpholinyl-1-propanone. The rest is the same as the first embodiment.
The environment-friendly high-intensity ultraviolet curing acrylate pressure-sensitive adhesive prepared by the embodiments is coated on a polyester film which is subjected to corona treatment, the ultraviolet-LED light curing is carried out, the wavelength of a light source of a curing lamp tube is 365nm, the light power is 50W, the curing time is 30s, the distance between the environment-friendly high-intensity ultraviolet curing acrylate pressure-sensitive adhesive tape and the lamp tube is 12cm, the environment-friendly high-intensity ultraviolet curing acrylate pressure-sensitive adhesive tape is obtained, and the initial viscosity, the holding viscosity and the 180-degree peel strength of the environment-friendly high-intensity ultraviolet curing acrylate pressure-sensitive adhesive tape are respectively tested according to GB/T4852-shaped 2002, GB/T4851-shaped 2014 and GB/T2792-shaped 2014, wherein the holding viscosity and 180-degree peel strength test sample parking condition is 23 ℃/24 h. The results are shown in table 1, and table 1 shows the performance test results of the environment-friendly high-strength ultraviolet-curable acrylate pressure-sensitive adhesive tapes prepared in embodiments 1 to 5 of the present invention:
table 1 pressure sensitive adhesive tape performance test results
| Numbering | Initial viscosity (ball) | Tackiness (h) | Peel strength (N/25mm) |
| Example one | 10 | ＞24 | 25 |
| Example two | 11 | ＞24 | 20 |
| EXAMPLE III | 9 | ＞24 | 28 |
| Example four | 12 | ＞24 | 23 |
| EXAMPLE five | 12 | ＞24 | 20 |
Claims (7)
1. An environment-friendly high-intensity ultraviolet light curing acrylate pressure-sensitive adhesive is characterized in that the environment-friendly high-intensity ultraviolet light curing acrylate pressure-sensitive adhesive is prepared by 30-70 parts by weight of nano modified polyurethane acrylate oligomer, 30-70 parts by weight of reactive diluent, 1-3 parts by weight of adhesion promoter and 0.2-5 parts by weight of photoinitiator;
the nano-modified polyurethane acrylate oligomer is prepared by the following steps:
adding 0.1mol of vacuum dehydrated dihydric alcohol into a four-mouth bottle provided with a stirrer, a thermometer and a dropping funnel, heating to 60-80 ℃, adding an organic tin catalyst accounting for 0.05-0.3% of the total mass of the dihydric alcohol under the stirring condition, then dropwise adding 0.12-0.2 mol of diisocyanate monomer, reacting for 3-6 h at 60-80 ℃, then adding an ethyl acetate solution of inorganic nanoparticles containing hydroxyl accounting for 1-10% of the total mass of the dihydric alcohol, reacting for 0.5-2 h at 60-80 ℃, then adding 0.1-0.2 mol of acrylate monomer containing hydroxyl, reacting for 1-1.5 h at 60-80 ℃, and then distilling under reduced pressure at 40-50 ℃ to remove the ethyl acetate in the system to obtain a nano modified polyurethane acrylate oligomer; the mass fraction of the ethyl acetate solution of the inorganic nanoparticles containing hydroxyl is 0.2-2%, and the inorganic nanoparticles containing hydroxyl are one or a mixture of more of nano silicon dioxide particles, nano graphene oxide, nano aluminum oxide and nano titanium dioxide;
the adhesion promoter is 2-methyl-2-acrylic acid-2-hydroxyethyl phosphate or 2-methacryloyloxyethyl phosphate.
2. The environment-friendly high-intensity ultraviolet-curable acrylate pressure-sensitive adhesive according to claim 1, wherein the dihydric alcohol is one or a mixture of polypropylene glycol PPG-600, polypropylene glycol PPG-1000, polypropylene glycol PPG-1500, polypropylene glycol PPG-2000, polypropylene glycol PPG-3000 and polypropylene glycol PPG-4000; the organic tin catalyst is dibutyltin dilaurate, stannous octoate, dibutyltin dilaurate or dibutyltin diacetate; the diisocyanate monomer is one or a mixture of more of toluene diisocyanate, 1, 6-hexamethylene diisocyanate, isophorone diisocyanate, 4-diisocyanate dicyclohexylmethane and diphenylmethane diisocyanate.
3. The environment-friendly high-intensity ultraviolet-curable acrylate pressure-sensitive adhesive according to claim 1, wherein the hydroxyl-containing acrylate monomer is one or a mixture of 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, hydroxypropyl methacrylate and hydroxyethyl methacrylate.
4. The environment-friendly high-intensity ultraviolet-curable acrylate pressure-sensitive adhesive according to claim 1, wherein the reactive diluent is one or a mixture of hydroxyethyl acrylate, hydroxyethyl methacrylate, isobornyl acrylate, isobornyl methacrylate, butyl acrylate, vinyl acetate, tripropylene glycol diacrylate, diethylene glycol diacrylate, 1, 6-hexanediol diacrylate, diethylene glycol diacrylate phthalate, tripropylene glycol diacrylate phthalate, polyethylene glycol diacrylate, neopentyl glycol diacrylate, propoxylated neopentyl glycol diacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate and pentaerythritol triacrylate.
5. The environment-friendly high-intensity UV-curable acrylate pressure-sensitive adhesive according to claim 1, wherein the photoinitiator is α, α' -dimethoxy- α -phenylacetophenone, α -diethoxyacetophenone, 2-hydroxy-2-methyl-1- [4- (2-hydroxyethoxy) phenyl ] -1-propanone, 2-hydroxy-2-methyl-1-phenyl-1-propyl ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholino-1-propanone or 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide.
6. The environment-friendly high-intensity ultraviolet-curable acrylate pressure-sensitive adhesive according to claim 1, which is prepared from 50 to 60 parts by weight of nano-modified urethane acrylate oligomer, 40 to 50 parts by weight of reactive diluent, 2 to 3 parts by weight of adhesion promoter and 1 to 2 parts by weight of photoinitiator.
7. The method for preparing the environment-friendly high-intensity ultraviolet-curing acrylate pressure-sensitive adhesive as claimed in claim 1, wherein the method for preparing the environment-friendly high-intensity ultraviolet-curing acrylate pressure-sensitive adhesive is completed by the following steps:
weighing 30-70 parts of nano modified polyurethane acrylate oligomer, 30-70 parts of reactive diluent, 1-3 parts of adhesion promoter and 0.2-5 parts of photoinitiator according to parts by weight;
secondly, adding 30-70 parts of reactive diluent weighed in the step one into a container under normal temperature and normal pressure, uniformly mixing, adding 30-70 parts of nano-modified polyurethane acrylate oligomer under stirring, stirring until the nano-modified polyurethane acrylate oligomer is completely dissolved, adding 0.2-5 parts of photoinitiator into the container, heating to 35-45 ℃, stirring at 35-45 ℃ until the photoinitiator is completely dissolved, adding 1-3 parts of adhesion promoter into the container, and continuously stirring at 35-45 ℃ for 0.5-1 h to obtain the environment-friendly high-strength ultraviolet curing acrylate pressure-sensitive adhesive.
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| CN112745798A (en) * | 2020-12-09 | 2021-05-04 | 浙江华正能源材料有限公司 | Photo-curing adhesive for lithium battery aluminum plastic film and preparation method thereof |
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| CN102876224A (en) * | 2012-10-17 | 2013-01-16 | 北京天山新材料技术股份有限公司 | Pressure-sensitive adhesive capable of realizing ultraviolet light polymerization and preparation method and application of pressure-sensitive adhesive |
| CN105482727A (en) * | 2015-12-02 | 2016-04-13 | 江阴通利光电科技有限公司 | Antibiosis protection film making method and antibiosis protection film |
| CN106497499A (en) * | 2016-10-28 | 2017-03-15 | 南京汇鑫光电材料有限公司 | A kind of UV solidifies optical cement |
| CN107129787A (en) * | 2017-05-25 | 2017-09-05 | 四川建筑职业技术学院 | A kind of ultraviolet cured adhesive of high tenacity and preparation method thereof |
| CN107502272A (en) * | 2017-08-04 | 2017-12-22 | 烟台信友新材料股份有限公司 | A kind of ultraviolet cured adhesive of doped nano titanium dioxide sticks agent and preparation method thereof |
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