CN114292619B - Adhesive, adhesive film and bonding method - Google Patents
Adhesive, adhesive film and bonding method Download PDFInfo
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- CN114292619B CN114292619B CN202111483886.6A CN202111483886A CN114292619B CN 114292619 B CN114292619 B CN 114292619B CN 202111483886 A CN202111483886 A CN 202111483886A CN 114292619 B CN114292619 B CN 114292619B
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Abstract
The invention relates to the technical field of adhesive films, in particular to an adhesive, an adhesive film and an adhesive method. The embodiment of the invention provides an adhesive, an adhesive film and an adhesive method, wherein the adhesive comprises 10-21.9 parts of acrylic ester polymer, 10-21.9 parts of carbamate polymer, 0.1-10.0 parts of active functional group resin, 67.7-79.6 parts of carbamate polymer with acrylate group, 0.1-5.0 parts of crosslinking curing agent, 0.1-3.6 parts of photoinitiator and 0-12 parts of solvent; the urethane polymer with the acrylate groups introduces active groups on molecular chain links, and can be subjected to secondary curing to further improve the crosslinking density, enhance the cohesive force of the adhesive and enhance the hardness of the adhesive film; the active functional group resin can react with active groups in the acrylic ester polymer under the action of the crosslinking curing agent, and the active groups are introduced to the acrylic ester polymer chain to play a role in chain extension and crosslinking, and meanwhile, the reactive functional group resin has secondary curing performance, so that the adhesiveness of the adhesive is improved, and the strength of the adhesive film is increased.
Description
Technical Field
The invention relates to the technical field of adhesive films, in particular to an adhesive, an adhesive film and an adhesive method.
Background
The pressure-sensitive adhesive is also called as self-adhesive, and can be adhered to an object to be adhered under light pressure of external force, and has the characteristics of easy adhesion, easy uncovering and no damage. The pressure-sensitive adhesive has become the product with the largest dosage and the widest application range in the adhesive by the unique performance and characteristics, and the products are almost spread in the fields of packaging, automobiles, electronics, electric appliances, building materials, aviation and the like.
The polyacrylate pressure-sensitive adhesive has the advantages of simple formula, wide bonding range, good weather resistance, light resistance, oil resistance, water resistance, no phase separation, migration and the like, is convenient to operate, has low price and the like, and becomes the fastest-growing main product in the pressure-sensitive adhesive, and the product comprises pressure-sensitive adhesive tape, pressure-sensitive adhesive label paper, pressure-sensitive adhesive sheet and the like.
In the process of realizing the invention, the inventor finds that in the prior art, in the occasion that the pressure-sensitive adhesive is required to have higher adhesive capability, the prior polyacrylate adhesive can not meet the requirement.
For example, automotive interior parts are required to withstand long-term test at 105 ℃ without falling off the surface and meet strict requirements for wear resistance, chemical resistance, and the like. In the manufacture of automotive interior parts, IMD, INS, TOM and other processes are generally used. The decorative surface is stretched, has larger residual stress after bending, and is easy to peel off when the existing pressure-sensitive adhesive is adhered to the decorative surface at the temperature exceeding 90 ℃. The adhesive film can be used for attaching a facing or directly used as a facing protection layer. By thermoplastic deformation, the secondary radiation curing effectively reduces stress, improves film strength, film stability, and temperature resistance, wear resistance and chemical resistance.
The adhesive film can be used for the surface protection of various plane and curved surface screens of electronics, electrical appliances, home furnishings and the like, and the manufacture of plane and curved surface shells.
Disclosure of Invention
In order to improve the bonding capability of polyacrylate adhesives, the embodiment of the invention provides an adhesive, an adhesive film and a bonding method, which can increase the bonding capability of the adhesives through the mutual synergistic effect of components such as acrylate polymers, carbamate polymers, active functional group resins and the like.
In order to solve the technical problems, the embodiment of the invention provides the following technical scheme:
in a first aspect, an embodiment of the present invention provides an adhesive, including the following components in parts by weight:
10-21.9 parts of acrylic ester polymer;
10-21.9 parts of carbamate polymer;
0.1-10.0 parts of active functional group resin;
67.7-79.6 parts of a urethane polymer with acrylate groups;
0.1-5.0 parts of cross-linking curing agent;
0.1-3.6 parts of photoinitiator;
0-12 parts of solvent.
Optionally, the adhesive further comprises, in parts by weight:
0.1-3.6 parts of light accelerator.
Optionally, the photo-accelerator comprises a 2-functional tertiary amine co-initiator or a reactive tertiary amine cure accelerating resin.
Optionally, the reactive functional group resin includes: at least one of a hydrogenated rosin resin, an alkyd resin, a rosin alcohol resin, or a hydrogenated rosin alcohol resin.
Optionally, the acrylate-based urethane polymer has a structural formula:
wherein m is more than or equal to 2 and less than or equal to 100, n is more than or equal to 1 and less than or equal to 100;
R 1 is an acrylate group, or R 1 Blocked with monoalcohols, monoamines, hydroxy, amino, carboxyl, epoxy, amido, ureido or siloxanes, R 2 Is a diisocyanate group, R 3 Is dihydric alcohol, R 4 Is a diol with pendant acrylate groups.
Optionally, the photoinitiator includes: at least one of benzoin dimethyl ether, 2-hydroxy-2-methyl-1 phenyl-propanone, 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide, phenyl bis (2, 4,6 trimethylbenzoyl) phosphine oxide, isopropylthia-anthraquinone and benzoyl formate.
In a second aspect, an embodiment of the present invention further provides a film, where the film includes the adhesive according to the first aspect.
In a third aspect, an embodiment of the present invention further provides a bonding method, including:
taking the adhesive film of the second aspect;
attaching a first adherend and a second adherend through the adhesive film;
the first adherend and the second adherend which are adhered to each other are made into a preset shape by a preset molding process;
curing the adhesive film by radiation induction.
Optionally, the preset forming process includes: one of an in-mold molding process, a hot press molding process, a vacuum plastic sucking molding process, an in-mold injection molding process or an out-mold decoration molding process.
Optionally, the first adherend and the second adherend are made of at least one of polycarbonate, polypropylene, polyethylene terephthalate, polymethyl methacrylate, polyimide, acrylonitrile-butadiene-styrene, polycarbonate/polymethyl methacrylate composite material, glass, polyethylene naphthalate, polyacrylonitrile and polyetheretherketone.
The beneficial effects of the embodiment of the invention are as follows: compared with the prior art, the adhesive film and the bonding method provided by the embodiment of the invention can enhance the bonding performance of the adhesive through the mutual synergistic effect of the components. The adhesive comprises 10-21.9 parts of acrylic ester polymer, 10-21.9 parts of carbamate polymer, 0.1-10.0 parts of active functional group resin, 67.7-79.6 parts of carbamate polymer with acrylate groups, 0.1-5.0 parts of crosslinking curing agent, 0.1-3.6 parts of photoinitiator and 0-12 parts of solvent; the urethane polymer with the acrylate groups introduces active groups on molecular chain links, and can be subjected to secondary curing to further improve the crosslinking density, enhance the cohesive force of the adhesive and enhance the hardness of the adhesive film; the active functional group resin can react with active groups in the acrylic ester polymer under the action of the crosslinking curing agent, and the active groups are introduced to the acrylic ester polymer chain to play a role in chain extension and crosslinking, and meanwhile, the reactive functional group resin has secondary curing performance, so that the adhesiveness of the adhesive is improved, and the strength of the adhesive film is increased. And after the adhesive film is removed from the solvent, the adhesive film is solidified into the adhesive film for the first time by using a cross-linking agent, and according to the requirement of a subsequent process, the adhesive film is initiated to be solidified for the second time by using radiation in a proper process section, so that the adhesive film with high strength, stability after molding, wear resistance, chemical resistance and other excellent performances is obtained.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below. It is evident that the drawings described below are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic cross-sectional view of an adhesive tape provided by one embodiment of the present invention;
fig. 2 is a flow chart of a bonding method according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that, if not in conflict, the features of the embodiments of the present invention may be combined with each other, which are all within the protection scope of the present invention. In addition, while the division of functional blocks is performed in a device diagram and the logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in a device diagram or the sequence in a flowchart.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.
The embodiment of the invention provides an adhesive, which comprises the following components in parts by weight:
10-21.9 parts of acrylic ester polymer;
10-21.9 parts of carbamate polymer;
0.1-10.0 parts of active functional group resin;
67.7-79.6 parts of a urethane polymer with acrylate groups;
0.1-5.0 parts of cross-linking curing agent;
0.1-3.6 parts of photoinitiator;
0-12 parts of solvent.
In some embodiments, the acrylate polymer comprises at least one of an acid-free acrylate polymer, a carboxy acrylate polymer, an amino acrylate polymer, a hydroxy acrylate polymer, an acid-free acrylic polymer, a carboxy acrylic emulsion, an amino acrylic emulsion, a hydroxy acrylic emulsion. The acrylate polymer may in particular be an oligomer.
In some embodiments, the urethane polymer includes at least one of a polyester urethane polymer, a polyether urethane polymer, a butadiene urethane polymer, a urethane polymer, a urethane urea urethane polymer, a linear structure urethane polymer, a urethane containing a small amount of cross-linkages such as allophanate, and the like.
In some embodiments, the reactive functional group resin comprises at least one of a hydrogenated rosin-based resin or a hydrogenated rosin resin emulsion, an alkyd resin or an alkyd resin emulsion, a rosin alcohol resin or a rosin alcohol emulsion, a hydrogenated rosin alcohol resin, or a hydrogenated rosin alcohol emulsion.
In some embodiments, the crosslinking curing agent includes at least one of toluene diisocyanate, aliphatic isocyanate, diphenylmethane-4, 4-diisocyanate, diphenylmethane-2, 4-diisocyanate, polymethylene polyphenyl isocyanate, phenylisocyanate, isophorone isocyanate, 3-isocyanatomethylene-3, 5-trimethylcyclohexyl isocyanate, octadecyl isocyanate, 1, 6-hexamethylene diisocyanate, hexamethylene diisocyanate biuret (HDI biuret), hexamethylene diisocyanate trimer (HDI trimer), hexamethylene diisocyanate-trimethylolpropane (HDI-TMP), aziridine, and the like.
In some embodiments, the photoinitiator is also known as a photosensitizer or a photo-curing agent, and is a compound capable of absorbing energy with a certain wavelength in an ultraviolet light region (250-420 nm) or a visible light region (400-800 nm) to generate free radicals or cations and the like, so as to initiate polymerization, crosslinking and curing of reactants. The photoinitiator comprises at least one of benzoin dimethyl ether, 2-hydroxy-2-methyl-1-phenyl-acetone, 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide, phenyl bis (2, 4,6 trimethylbenzoyl) phosphine oxide, isopropyl thia-anthraquinone and benzoyl formate.
In some embodiments, the solvent may be at least one of an alcohol, an ether, a ketone, an ester, an aromatic hydrocarbon, and chloroform.
Specifically, in some embodiments, in order to provide the adhesive of the present invention with better adhesion, the structure of the acrylate-based urethane polymer is as follows:
the structural formula of the acrylic ester-containing carbamate polymer is as follows:
wherein m is more than or equal to 2 and less than or equal to 100, n is more than or equal to 1 and less than or equal to 100;
R 1 preferably an acrylate group, or R 1 Blocked with monoalcohols, monoamines, hydroxy, amino, carboxyl, epoxy, amido, ureido or siloxanes, R 2 Is a diisocyanate group, R 3 Is dihydric alcohol, R 4 Is a diol with pendant acrylate groups.
In some embodiments, to increase the reaction rate, the adhesive further includes 0.1 to 3.6 parts by weight of a photo accelerator. The photo accelerator specifically comprises one of 2-functional tertiary amine co-initiator and reactive tertiary amine curing accelerating resin.
The adhesive provided by the embodiment of the invention can enhance the adhesive property of the adhesive through the mutual synergistic effect of the components. The urethane polymer can introduce active groups into the molecular chain of the polyacrylate polymer, so that the crosslinking density is improved, and the cohesive force of the adhesive is enhanced; the active functional group resin can react with active groups in the acrylic ester polymer under the action of the crosslinking curing agent to play a role in chain extension and crosslinking, so that the adhesive property of the adhesive is improved.
The embodiment of the invention also provides an adhesive tape, fig. 1 schematically shows a cross-sectional view of the adhesive tape, and as shown in fig. 1, the adhesive tape 10 sequentially comprises a first release film 11, an adhesive film 12 and a second release film 13; the adhesive film 12 includes the adhesive provided in the adhesive embodiment. In some embodiments, the tape is prepared as follows: the adhesive provided in the above embodiment is applied to the first release film 11, and then the adhesive is used to bond the first release film 11 and the second release film 12 to form an adhesive tape. In other embodiments, the film may also be manufactured using an extrusion film forming process. When the film is manufactured by using an extrusion film forming process, a solvent is not used, and the required adhesive film is obtained by hot extrusion. When the coating process is used for manufacturing, a proper amount of solvent is used for dilution, and the required adhesive film is obtained after the solvent is removed by coating on a release film
The embodiment of the invention also provides a bonding method, fig. 2 schematically shows the flow of the bonding method, and as shown in fig. 2, the method comprises the following steps:
s21, taking the adhesive film provided by the embodiment;
s22, bonding the first adherend and the second adherend through the adhesive film;
s23, manufacturing the first adherend and the second adherend which are adhered to each other into a preset shape through a preset molding process;
s24, curing the adhesive film through radiation induction.
In some embodiments, the bonding method is as follows: taking the adhesive tape provided in the above embodiment, removing the first release film on one side of the adhesive tape, for example: a first release film or a second release film; then the adhesive tape is attached to the first adherend through the initial adhesion of the adhesive layer, the release film on the other side of the adhesive tape is removed, and the second adherend is attached to the first adherend through the initial adhesion of the adhesive layer; the first adherend and the second adherend which are adhered to each other are formed into a predetermined shape by a predetermined molding process, and then the adhesive film is cured under radiation induction (e.g., induction of ultraviolet light or visible light). The predetermined shape may match the shape of the first adherend and the second adherend, for example: the preset shape may be square or circular, etc.
In some embodiments, the pre-set molding process specifically includes: an in-mold molding process, a hot-press molding process, a vacuum plastic-sucking molding process, an in-mold injection molding process or an out-mold decoration molding process. When the preset molding process is a hot press molding process, the hot press molding temperature may specifically be 75-85 ℃, for example: 80 ℃.
In some embodiments, the adhesive tape may be further cut according to the shape and size of the first adherend and the second adherend before step S22, so that the shape of the cut adhesive tape matches the shape of the first adherend and/or the second adherend.
In some embodiments, the first adherend and the second adherend are at least one of Polycarbonate (PC), polypropylene (PP), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polyimide (PI), acrylonitrile-butadiene-styrene (ABS), polycarbonate/polymethyl methacrylate composite (PC/PMMA), glass, polyethylene naphthalate (PEN), polyacrylonitrile (PAN), and Polyetheretherketone (PEEK).
The adhesive, the adhesive film and the bonding method provided by the invention can be adhered between two adhered objects through the pressure-sensitive initial adhesion, at the moment, the adhered objects can be molded by using a preset molding process, and then the adhesive film is subjected to post-curing through radiation induction, so that firm bonding force is formed, and meanwhile, the bonded objects are well shaped. The method can be widely applied to the fields of front and rear covers of electronic products, ornaments, medical adhesive tapes, automotive upholsteries and the like.
Several embodiments of the invention are provided below:
example 1
The adhesive tape sequentially comprises a first release film, an adhesive film and a second release film, wherein the thickness of the adhesive film is 20 mu m;
the adhesive for preparing the adhesive film comprises the following components in parts by weight:
10 parts of acid-free acrylic ester polymer;
12 parts of polyether type carbamate polymer;
rosin resin (reactive functional group resin) 0.1 part;
69.9 parts of an acrylate-based urethane polymer;
5 parts of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
2 parts of benzoin dimethyl ether (photoinitiator);
1 part of a 2-functional tertiary amine co-initiator (photo accelerator);
the bonding method comprises the following steps:
s21, taking the adhesive film provided by the embodiment;
s22, bonding the first adherend and the second adherend through the adhesive film;
s23, manufacturing the first adherend and the second adherend which are mutually bonded into preset shapes through a hot press molding process;
s24, curing the adhesive film through radiation induction.
Wherein the first and second adherends are PC, the hot press molding temperature is 80 ℃, the pressure is 1MPa, and the pressure maintaining time is 10 seconds; and (5) curing and shaping the adhesive film by irradiation of an ultraviolet mercury lamp of 344mJ to obtain the adhesive product.
Example 2
This embodiment differs from embodiment 1 in that:
the adhesive for preparing the adhesive film comprises the following components in parts by weight:
9 parts of carboxyl acrylic ester polymer;
10 parts of polyester type carbamate polymer;
rosin resin (reactive functional group resin) 0.1 part;
71.6 parts of an acrylate-based urethane polymer;
0.1 part of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
benzoin dimethyl ether (photoinitiator) 0.1 part;
0.1 part of a 2-functional tertiary amine co-initiator (photo accelerator);
example 3
This embodiment differs from embodiment 1 in that:
10 parts of amino acrylic ester polymer;
10 parts of butadiene-type carbamate polymer;
rosin resin (reactive functional group resin) 0.1 part;
67.7 parts of an acrylate-based urethane polymer;
5 parts of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
3.6 parts of benzoin dimethyl ether (photoinitiator);
3.6 parts of a 2-functional tertiary amine co-initiator (photo accelerator);
example 4
This embodiment differs from embodiment 1 in that:
15 parts of hydroxy acrylic ester polymer;
12 parts of urethane urea type carbamate polymer; rosin resin (reactive functional group resin) 0.1 part;
69.8 parts of an acrylate-based urethane polymer;
0.1 part of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
3 parts of benzoin dimethyl ether (photoinitiator);
the temperature of the hot press molding was 60 ℃.
Example 5
This embodiment differs from embodiment 1 in that:
the adhesive comprises the following components in parts by weight:
20 parts of an acid-free acrylic polymer;
10 parts of linear structural carbamate polymer;
rosin resin (reactive functional group resin) 0.1 part;
69.7 parts of an acrylate-based urethane polymer;
0.1 part of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
benzoin dimethyl ether (photoinitiator) 0.1 part;
the temperature of the hot press molding was 60 ℃.
Example 6
This embodiment differs from embodiment 1 in that:
the adhesive comprises the following components in parts by weight:
10 parts of carboxyl acrylic emulsion;
20 parts of polyether type carbamate polymer;
rosin resin (reactive functional group resin) 0.1 part;
69.2 parts of an acrylate-based urethane polymer;
0.5 part of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
benzoin dimethyl ether (photoinitiator) 0.2 parts;
the temperature of the hot press molding was 60 ℃.
Example 7
This embodiment differs from embodiment 1 in that:
the adhesive comprises the following components in parts by weight:
15 parts of amino acrylic emulsion;
10 parts of butadiene-type carbamate polymer;
rosin resin (reactive functional group resin) 0.2 parts;
70.7 parts of an acrylate-based urethane polymer;
1 part of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
benzoin dimethyl ether (photoinitiator) 0.1 part;
3 parts of a 2-functional tertiary amine co-initiator (photo accelerator);
the first adherend and the second adherend are made of PET.
Example 8
This embodiment differs from embodiment 1 in that:
the adhesive comprises the following components in parts by weight:
10 parts of hydroxy acrylic emulsion;
10 parts of polyether type carbamate polymer;
rosin resin (reactive functional group resin) 0.1 part;
67.7 parts of an acrylate-based urethane polymer;
5 parts of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
3.6 parts of benzoin dimethyl ether (photoinitiator);
3.6 parts of a 2-functional tertiary amine co-initiator (photo accelerator);
the first adherend and the second adherend are made of PET.
Example 9
This embodiment differs from embodiment 1 in that:
the adhesive comprises the following components in parts by weight:
10 parts of acid-free acrylic ester polymer;
10 parts of linear structural carbamate polymer;
rosin resin (reactive functional group resin) 0.1 part;
67.7 parts of an acrylate-based urethane polymer;
0.1 part of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
benzoin dimethyl ether (photoinitiator) 0.1 part;
12 parts of chloroform;
the first adherend and the second adherend are made of PET.
The performance test method of each embodiment is as follows:
(1) Primary adhesion testing;
the primary adhesion in the examples of the present invention is also called quick adhesion, and refers to the separation resistance exhibited by the pressure-sensitive adhesive article and the adherend that are quickly separated after they are brought into contact with each other under a light pressure. The initial adhesion (unit: g/inch) of the adhesive film and the adherend in the adhesive tape at normal temperature after 2min and 5min of contact with each other under a very light pressure was tested in the examples of the present invention.
(2) Testing the stripping force;
the adhesive articles in each example (i.e., the first adherend and the second adherend adhered to each other by the adhesive film) were divided into four groups, and after being placed for 10min, 30min, 1h and 20h, respectively, after hot pressing, the adhesive films were cured under the induction of ultraviolet light, and then the peel force (unit: N) of the adhesive films after photo-curing was tested, respectively.
(3) And (5) water boiling test.
The first adherend and the second adherend are bonded to each other by the adhesive film, and after hot press molding, the adhesive film is cured under the induction of ultraviolet light, and then boiled in water at 80 ℃ for 40 minutes, and then cooled and tested for peel strength (unit: N) of the adhesive film.
The results of the initial adhesion test, the peel force test, and the poaching test of the samples in each example are detailed in table 1.
Table 1: performance test results for each example.
As can be seen from a comparison of the primary adhesion data of examples 1-3 and examples 4-6 in table 1: compared with the adhesive film without the photo-accelerator, the initial adhesion of the adhesive film with the photo-accelerator is obviously improved. From a comparison of the data of examples 1-3 and examples 7-9, it can be seen that: compared with an adherend PC, the adhesive film provided by the embodiment of the invention has stronger initial adhesion to the adherend PET.
As can be seen from comparison of the peel force data of examples 1 to 9 in Table 1, when the adhesive was left for 10min, 30min and 1h after hot pressing, the adhesive film was cured under the induction of ultraviolet light, the peel force of the cured and set adhesive was relatively stable, and when the adhesive was left for 20h after hot pressing, the adhesive force of the adhesive film was greatly enhanced, and thus the adherend was broken by forcibly peeling off the adherend. Meanwhile, as can be seen from the water boiling test data, the bonding product prepared by the bonding method provided by the embodiment of the invention has good water boiling resistance, the peeling strength of the bonding product is above 40N after the bonding product is boiled in water at 80 ℃ for 40min and cooled, and the bonding product has good appearance.
The following shall be described: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The adhesive is characterized by comprising the following components in parts by weight:
10-21.9 parts of acrylic ester polymer;
10-21.9 parts of carbamate polymer;
0.1-10 parts of active functional group resin;
67.7-79.6 parts of a urethane polymer with acrylate groups;
0.1-5.0 parts of cross-linking curing agent;
0.1-3.6 parts of photoinitiator;
0.1-3.6 parts of light accelerator;
0-12 parts of a solvent;
wherein the photo-accelerator comprises a 2-functional tertiary amine co-initiator or a reactive tertiary amine curing accelerating resin, and the structural formula of the acrylate-based carbamate polymer is as follows:
wherein m is more than or equal to 2 and less than or equal to 100, n is more than or equal to 1 and less than or equal to 100;
R 1 is an acrylate group, or R 1 Blocked with monoalcohols, monoamines, hydroxy, amino, carboxyl, epoxy, amido, ureido or siloxanes, R 2 Is a diisocyanate group, R 3 Is dihydric alcohol, R 4 Is a diol with pendant acrylate groups.
2. The adhesive of claim 1, wherein the reactive functional group resin comprises: at least one of a hydrogenated rosin resin, an alkyd resin, a rosin alcohol resin, or a hydrogenated rosin alcohol resin.
3. The adhesive of claim 1, wherein the photoinitiator comprises: at least one of benzoin dimethyl ether, 2-hydroxy-2-methyl-1 phenyl-propanone, 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide, phenyl bis (2, 4,6 trimethylbenzoyl) phosphine oxide, isopropylthia-anthraquinone and benzoyl formate.
4. A film comprising the adhesive of any one of claims 1-3.
5. A method of bonding, the method comprising:
taking the adhesive film of claim 4;
attaching a first adherend and a second adherend through the adhesive film;
the first adherend and the second adherend which are adhered to each other are made into a preset shape by a preset molding process;
curing the adhesive film by radiation induction.
6. The bonding method according to claim 5, wherein the pre-set molding process comprises: one of an in-mold molding process, a hot press molding process, a vacuum plastic sucking molding process, an in-mold injection molding process or an out-mold decoration molding process.
7. The bonding method according to claim 5 or 6, wherein the first adherend and the second adherend are at least one of polycarbonate, polypropylene, polyethylene terephthalate, polymethyl methacrylate, polyimide, acrylonitrile-butadiene-styrene plastic, polycarbonate/polymethyl methacrylate composite material, glass, polyethylene naphthalate, polyacrylonitrile, and polyether ether ketone.
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| CN112920762A (en) * | 2021-02-25 | 2021-06-08 | 杭州宝明新材料科技有限公司 | UV/moisture dual-curing adhesive capable of being rapidly bonded and preparation method thereof |
| CN113045709A (en) * | 2021-04-12 | 2021-06-29 | 泉州师范学院 | Photosensitive resin composition for photocuring 3D printing high-toughness product and preparation method thereof |
| CN114517073A (en) * | 2022-02-24 | 2022-05-20 | 上海本诺电子材料有限公司 | UV moisture curing adhesive for joint filling |
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| CN104845521A (en) * | 2015-06-15 | 2015-08-19 | 张家港康得新光电材料有限公司 | UV curing coating, wear-resistant and antifouling coating layer and mobile phone protection film containing wear-resistant and antifouling coating layer |
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| CN111334242A (en) * | 2020-04-29 | 2020-06-26 | 东莞市贝特利新材料有限公司 | Ultraviolet curing transfer adhesive for 3D molding and preparation method thereof |
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| CN113045709A (en) * | 2021-04-12 | 2021-06-29 | 泉州师范学院 | Photosensitive resin composition for photocuring 3D printing high-toughness product and preparation method thereof |
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| CN114292619A (en) | 2022-04-08 |
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