CN114292619A - Adhesive, adhesive film and bonding method - Google Patents
Adhesive, adhesive film and bonding method Download PDFInfo
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- CN114292619A CN114292619A CN202111483886.6A CN202111483886A CN114292619A CN 114292619 A CN114292619 A CN 114292619A CN 202111483886 A CN202111483886 A CN 202111483886A CN 114292619 A CN114292619 A CN 114292619A
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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 acrylate 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 group introduces active groups on molecular chain links, and can be cured for the second time to further improve the crosslinking density, enhance the cohesive force of the adhesive and enhance the hardness of an adhesive film; the active functional group resin can react with active groups in the acrylate polymer under the action of a crosslinking curing agent, the active groups are introduced to an acrylate polymer chain, the effect of chain extension and crosslinking is achieved, and meanwhile, the secondary curing performance is achieved, so that the adhesive bonding property of the adhesive is improved, and the strength of an 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 adhesive sticker, is an adhesive which can be adhered to an adherend under the action of external force and light pressure, and has the properties of easy adhesion, easy uncovering and no damage by peeling. The pressure-sensitive adhesive has unique performance and characteristics, becomes a product with the largest dosage and the widest application range in the adhesive, and products of the pressure-sensitive adhesive 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 and water resistance, no phenomena of phase separation, migration and the like, convenient operation, low price and the like, and becomes the main product with the fastest development in the pressure-sensitive adhesive, and products of the pressure-sensitive adhesive comprise a pressure-sensitive adhesive tape, pressure-sensitive adhesive label paper, a pressure-sensitive adhesive sheet and the like.
In the process of implementing the invention, the inventor finds that in the prior art, the existing polyacrylate adhesive can not meet the requirement in the occasions where the pressure-sensitive adhesive is required to have higher adhesive capacity.
For example, automotive interior parts need to withstand long-term surface tests at 105 degrees celsius without falling off and meet strict requirements for abrasion resistance, chemical resistance, and the like. In manufacturing automotive upholstery, IMD, INS, TOM, etc. processes are generally used. The decorative surface is stretched and has larger residual stress after being bent, and the decorative surface is easy to peel off and fall off when the existing pressure-sensitive adhesive is used for bonding at the temperature of over 90 ℃. The adhesive film can be used for attaching a facing or directly used as a facing protective layer. Through thermoplastic deformation and secondary radiation curing, the stress is effectively reduced, and the film strength, the film stability, the temperature resistance, the wear resistance and the chemical resistance are improved.
The adhesive film of the invention can be used for surface protection of various plane and curved screens of electronics, electrical appliances, home furnishing and the like, and manufacturing of plane and curved surface shells.
Disclosure of Invention
In order to improve the bonding capability of the polyacrylate adhesive, the embodiment of the invention provides the adhesive, the adhesive film and the bonding method, which can improve the bonding capability of the adhesive through the mutual synergistic effect of the acrylate polymer, the urethane polymer, the active functional group resin and other components.
In order to solve the above technical problem, an embodiment of the present invention provides the following technical solutions:
in a first aspect, an embodiment of the present invention provides an adhesive, which includes the following components in parts by weight:
10-21.9 parts of an acrylate polymer;
10-21.9 parts of a urethane polymer;
0.1-10.0 parts of active functional group resin;
67.7-79.6 parts of urethane polymer with acrylate group;
0.1-5.0 parts of crosslinking curing agent;
0.1-3.6 parts of photoinitiator;
0-12 parts of a solvent.
Optionally, the adhesive further comprises the following components in parts by weight:
0.1-3.6 parts of a light accelerator.
Optionally, the photo-accelerator comprises a 2-functional tertiary amine co-initiator or a reactive tertiary amine cure-promoting resin.
Optionally, 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.
Optionally, the structural formula of the urethane polymer with acrylate group is as follows:
wherein m is more than or equal to 2 and less than or equal to 100, and n is more than or equal to 1 and less than or equal to 100;
R1is an acrylate group, or R1Blocked with monoalcohols, hydroxyl, amino, carboxyl, epoxy, amido, ureido or siloxane groups, R2Is a diisocyanate group, R3Is a dihydric alcohol, R4Is a diol with pendant acrylate groups.
Optionally, the photoinitiator comprises: at least one of benzoin bis methyl ether, 2-hydroxy-2-methyl-1 phenyl-propanone, 2, 4, 6 (trimethylbenzoyl) diphenylphosphine oxide, phenylbis (2, 4, 6 trimethylbenzoyl) phosphine oxide, isopropyl thioxanthone and benzoylformate.
In a second aspect, an embodiment of the present invention further provides an adhesive film, where the adhesive film includes the adhesive according to the first aspect.
In a third aspect, an embodiment of the present invention further provides a bonding method, where the method includes:
taking the adhesive film of the second aspect;
bonding a first adherend and a second adherend via the adhesive film;
forming the first adherend and the second adherend bonded to each other into a predetermined shape by a predetermined molding process;
curing the adhesive film by radiation induction.
Optionally, the preset forming process includes: one of an in-mold forming process, a hot press forming process, a vacuum forming process, an in-mold injection molding process or an out-mold decoration forming process.
Optionally, the material of the first adherend and the second adherend is at least one of the polycarbonate, polypropylene, polyethylene terephthalate, polymethyl methacrylate, polyimide, acrylonitrile-butadiene-styrene plastic, polycarbonate/polymethyl methacrylate composite material, glass, polyethylene naphthalate, polyacrylonitrile, and polyether ether ketone.
The beneficial effects of the embodiment of the invention are as follows: in contrast to the prior art, embodiments of the present invention provide an adhesive, an adhesive film and an adhesion method, which can enhance the adhesion performance of the adhesive through the mutual synergistic effect of the components. The adhesive comprises 10-21.9 parts of acrylate 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 group introduces active groups on molecular chain links, and can be cured for the second time to further improve the crosslinking density, enhance the cohesive force of the adhesive and enhance the hardness of an adhesive film; the active functional group resin can react with active groups in the acrylate polymer under the action of a crosslinking curing agent, the active groups are introduced to an acrylate polymer chain, the effect of chain extension and crosslinking is achieved, and meanwhile, the secondary curing performance is achieved, so that the adhesive bonding property of the adhesive is improved, and the strength of an adhesive film is increased. The adhesive film is solidified into the adhesive film for the first time by a cross-linking agent after the solvent is removed, and the adhesive film is initiated to be solidified for the second time by radiation in a proper process section according to the requirements of the subsequent process, 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 solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic cross-sectional view of an adhesive tape provided in accordance with an embodiment of the present invention;
fig. 2 is a schematic flow chart of a bonding method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that, if not conflicted, the various features of the embodiments of the invention may be combined with each other within the scope of protection of the invention. Additionally, while functional block divisions are performed in the device diagrams, with logical sequences shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than the block divisions in the device diagrams, or the flowcharts.
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. As used herein, the term "and/or" 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 an acrylate polymer;
10-21.9 parts of a urethane polymer;
0.1-10.0 parts of active functional group resin;
67.7-79.6 parts of urethane polymer with acrylate group;
0.1-5.0 parts of crosslinking curing agent;
0.1-3.6 parts of photoinitiator;
0-12 parts of a solvent.
In some embodiments, the acrylate polymer comprises at least one of an acid-free acrylate polymer, a carboxyl acrylate polymer, an amino acrylate polymer, a hydroxyl acrylate polymer, an acid-free acrylic polymer, a carboxyl acrylic emulsion, an amino acrylic emulsion, a hydroxyl acrylic emulsion. The acrylate polymer may specifically 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 allophanate and the like crosslinking bonds.
In some embodiments, the reactive functional group resin comprises at least one of a hydrogenated rosin-based resin or hydrogenated rosin resin emulsion, an alkyd resin or alkyd resin emulsion, a rosin alcohol resin or 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, polymethylpolyphenyl isocyanate, phenyl isocyanate, isophorone isocyanate, 3-isocyanatomethylene-3, 5, 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 called a photosensitizer or a photocuring agent, and is a compound capable of absorbing energy with a certain wavelength in an ultraviolet 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 thioxanthone 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 better adhesion of the adhesive provided by the present invention, the structure of the acrylate-based urethane polymer is as follows:
the structural formula of the urethane polymer with acrylate group is as follows:
wherein m is more than or equal to 2 and less than or equal to 100, and n is more than or equal to 1 and less than or equal to 100;
R1preferably an acrylate group, or R1Blocked with monoalcohols, hydroxyl, amino, carboxyl, epoxy, amido, ureido or siloxane groups, R2Is a diisocyanate group, R3Is a dihydric alcohol, R4Is a diol with pendant acrylate groups.
In some embodiments, the adhesive further comprises 0.1 to 3.6 parts by weight of a photo-promoter in order to increase the reaction rate. The light accelerator specifically comprises one of a 2-functional tertiary amine co-initiator and a 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 acrylate polymer under the action of a crosslinking curing agent, so that the effect of chain extension and crosslinking is achieved, and the bonding performance 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 above adhesive embodiments. In some embodiments, the adhesive tape is prepared as follows: the adhesive provided in the above embodiment is applied to the first release film 11, and then the first release film 11 and the second release film 12 are bonded together by the adhesive to form the adhesive tape. In other embodiments, the adhesive 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 adhesive film is manufactured by using a coating process, the adhesive film is diluted by using a proper amount of solvent, is coated on a release film, and is extracted by the solvent to obtain the required adhesive film
An embodiment of the present invention further provides a bonding method, fig. 2 schematically shows a flow of the bonding method, and as shown in fig. 2, the method includes the following steps:
s21, taking the adhesive film provided by the above embodiment;
s22, bonding the first adherend and the second adherend through the adhesive film;
s23, forming the first adherend and the second adherend bonded to each other into a predetermined shape by a predetermined molding process;
s24, curing the adhesive film through radiation induction.
In some embodiments, the bonding method is as follows: taking the adhesive tape provided by 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 force 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 property of the adhesive layer; the first adherend and the second adherend bonded 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 by ultraviolet light or visible light). The predetermined shape may be matched with the shapes of the first adherend and the second adherend, for example: the preset shape may be a square or a circle, etc.
In some embodiments, the pre-forming process specifically includes: an in-mold forming process, a hot-press forming process, a vacuum forming process, an in-mold injection molding process or an out-mold decoration forming process. When the preset molding process is a hot press molding process, the temperature of the hot press molding may be specifically 75 to 85 ℃, for example: 80 ℃.
In some embodiments, before step S22, the adhesive tape may also be cut according to the shape and size of the first adherend and the second adherend 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 material of the first adherend and the second adherend is at least one of Polycarbonate (PC), polypropylene (PP), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), Polyimide (PI), acrylonitrile-butadiene-styrene plastic (ABS), polycarbonate/polymethyl methacrylate composite (PC/PMMA), glass, polyethylene naphthalate (PEN), Polyacrylonitrile (PAN), and polyether ether ketone (PEEK).
The adhesive, the adhesive film and the bonding method provided by the invention can be adhered between two stuck objects through pressure-sensitive initial adhesion, at the moment, the stuck objects can be formed by using a preset forming process, and then the adhesive film is subjected to post-curing through radiation induction, so that firm bonding force is formed and the stuck objects are well shaped. The method can be widely applied to the fields of front and rear covers of electronic products, ornaments, medical tapes, automotive upholstery 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 micrometers;
the adhesive for preparing the adhesive film comprises the following components in parts by weight:
10 parts of an acid-free acrylate polymer;
12 parts of polyether type carbamate polymer;
0.1 part of rosin resin (active functional group resin);
69.9 parts of urethane polymer with acrylate group;
5 parts of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
benzoin dimethyl ether (photoinitiator) 2 parts;
1 part of 2-functional tertiary amine co-initiator (light accelerator);
the bonding method comprises the following steps:
s21, taking the adhesive film provided by the above embodiment;
s22, bonding the first adherend and the second adherend through the adhesive film;
s23, forming the first adherend and the second adherend bonded to each other into a predetermined shape by a hot press molding process;
s24, curing the adhesive film through radiation induction.
Wherein the first adherend and the second adherend are made of PC, the hot press molding temperature is 80 ℃, the pressure is 1MPa, and the pressure maintaining time is 10 seconds; the adhesive film was cured and set by irradiation with a 344mJ UV mercury lamp to obtain a bonded product.
Example 2
This example differs from example 1 in that:
the adhesive for preparing the adhesive film comprises the following components in parts by weight:
9 parts of carboxyl acrylate polymer;
10 parts of polyester type carbamate polymer;
0.1 part of rosin resin (active functional group resin);
71.6 parts of urethane polymer with acrylate group;
0.1 part of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
0.1 part of benzoin dimethyl ether (photoinitiator);
0.1 part of 2-functional tertiary amine co-initiator (light accelerator);
example 3
This example differs from example 1 in that:
10 parts of amino acrylate polymer;
10 parts of butadiene-type urethane polymer;
0.1 part of rosin resin (active functional group resin);
67.7 parts of urethane polymer with acrylate group;
5 parts of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
3.6 parts of benzoin dimethyl ether (photoinitiator);
3.6 parts of 2-functional tertiary amine co-initiator (light accelerator);
example 4
This example differs from example 1 in that:
15 parts of a hydroxyl acrylate polymer;
12 parts of a urethane urea type urethane polymer; 0.1 part of rosin resin (active functional group resin);
69.8 parts of urethane polymer with acrylate group;
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 example differs from example 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 structure urethane polymer;
0.1 part of rosin resin (active functional group resin);
69.7 parts of urethane polymer with acrylate group;
0.1 part of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
0.1 part of benzoin dimethyl ether (photoinitiator);
the temperature of the hot press molding was 60 ℃.
Example 6
This example differs from example 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;
0.1 part of rosin resin (active functional group resin);
69.2 parts of urethane polymer with acrylate group;
0.5 part of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
0.2 part of benzoin dimethyl ether (photoinitiator);
the temperature of the hot press molding was 60 ℃.
Example 7
This example differs from example 1 in that:
the adhesive comprises the following components in parts by weight:
15 parts of amino acrylic emulsion;
10 parts of butadiene-type urethane polymer;
0.2 part of rosin resin (active functional group resin);
70.7 parts of urethane polymer with acrylate group;
1 part of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
0.1 part of benzoin dimethyl ether (photoinitiator);
3 parts of 2-functional tertiary amine coinitiator (light accelerator);
the material of the first adherend and the second adherend is PET.
Example 8
This example differs from example 1 in that:
the adhesive comprises the following components in parts by weight:
10 parts of a hydroxy acrylic emulsion;
10 parts of polyether type carbamate polymer;
0.1 part of rosin resin (active functional group resin);
67.7 parts of urethane polymer with acrylate group;
5 parts of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
3.6 parts of benzoin dimethyl ether (photoinitiator);
3.6 parts of 2-functional tertiary amine co-initiator (light accelerator);
the material of the first adherend and the second adherend is PET.
Example 9
This example differs from example 1 in that:
the adhesive comprises the following components in parts by weight:
10 parts of an acid-free acrylate polymer;
10 parts of linear structure urethane polymer;
0.1 part of rosin resin (active functional group resin);
67.7 parts of urethane polymer with acrylate group;
0.1 part of diphenylmethane-4, 4-diisocyanate (crosslinking curing agent);
0.1 part of benzoin dimethyl ether (photoinitiator);
12 parts of chloroform;
the material of the first adherend and the second adherend is PET.
The performance test method of each example is as follows:
(1) testing initial adhesion;
the initial adhesion in the embodiment of the present invention is also referred to as a quick adhesion, and means a separation resistance exhibited when a pressure-sensitive adhesive article and an adherend are brought into contact with each other under a very light pressure and then rapidly separated. In the examples of the present invention, the initial adhesive force (unit: g/inch) of the adhesive film and the adherend in the adhesive tape at room temperature after contacting them with a very light pressure for 2min and 5min was measured, respectively.
(2) Testing the peeling force;
the bonded articles in each example (i.e., the first adherend and the second adherend bonded to each other via the adhesive film) were divided into four groups, and after leaving 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 photo-cured adhesive films was measured, respectively.
(3) And (5) boiling and testing.
The first adherend and the second adherend bonded to each other through the adhesive film were cured under the induction of ultraviolet light after hot press molding, then boiled in water at 80 ℃ for 40min, cooled and tested for the peel strength (unit: N) of the adhesive film.
The results of the initial adhesion test, peel force test and poaching test of the samples in each example are detailed in table 1.
Table 1: results of performance testing of the examples.
As can be seen from a comparison of the initial tack data for examples 1-3 and examples 4-6 in Table 1: compared with the adhesive film without the light promoter, the initial adhesion of the adhesive film containing the light promoter is obviously improved. From a comparison of the data of examples 1-3 and examples 7-9 it can be seen that: compared with the 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 article was left to stand for 10min, 30min and 1h after hot pressing, and the adhesive film was cured under the induction of ultraviolet light, the peel force of the cured and set adhesive article was relatively stable, and when the adhesive article was left to stand for 20h after hot pressing and then light-cured, the adhesive force of the adhesive film was greatly increased, and therefore, the adherend was broken by forcibly peeling the adherend. Meanwhile, as can be seen from the boiling test data, the bonded product prepared by the bonding method provided by the embodiment of the invention has good boiling resistance, the peel strength of the bonded product is over 40N after the bonded product is boiled in water at 80 ℃ for 40min and cooled, and the appearance of the bonded product is good.
What should be noted later is: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, 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 present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The adhesive is characterized by comprising the following components in parts by weight:
10-21.9 parts of an acrylate polymer;
10-21.9 parts of a urethane polymer;
0.1-10 parts of active functional group resin;
67.7-79.6 parts of urethane polymer with acrylate group;
0.1-5.0 parts of crosslinking curing agent;
0.1-3.6 parts of photoinitiator;
0-12 parts of a solvent.
2. The adhesive of claim 1, further comprising, in parts by weight:
0.1-3.6 parts of a light accelerator.
3. The adhesive of claim 2 wherein the photo-promoter comprises a 2-functional tertiary amine co-initiator or a reactive tertiary amine cure-promoting resin.
4. The adhesive according to any one of claims 1 to 3, 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.
5. The adhesive according to any one of claims 1 to 3, wherein 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, and n is more than or equal to 1 and less than or equal to 100;
R1is an acrylate group, or R1Blocked with monoalcohols, hydroxyl, amino, carboxyl, epoxy, amido, ureido or siloxane groups, R2Is a diisocyanate group, R3Is a dihydric alcohol, R4Is a diol with pendant acrylate groups.
6. The adhesive of any one of claims 1-3, wherein the photoinitiator comprises: at least one of benzoin bis methyl ether, 2-hydroxy-2-methyl-1 phenyl-propanone, 2, 4, 6 (trimethylbenzoyl) diphenylphosphine oxide, phenylbis (2, 4, 6 trimethylbenzoyl) phosphine oxide, isopropyl thioxanthone and benzoylformate.
7. An adhesive film comprising the adhesive according to any one of claims 1 to 6.
8. A method of bonding, the method comprising:
taking the adhesive film of claim 7;
bonding a first adherend and a second adherend via the adhesive film;
forming the first adherend and the second adherend bonded to each other into a predetermined shape by a predetermined molding process;
curing the adhesive film by radiation induction.
9. The bonding method according to claim 8, wherein the pre-forming process comprises: one of an in-mold forming process, a hot press forming process, a vacuum forming process, an in-mold injection molding process or an out-mold decoration forming process.
10. The bonding method according to any one of claims 8 or 9, wherein the material of the first adherend and the second adherend is at least one of the polycarbonate, polypropylene, polyethylene terephthalate, polymethyl methacrylate, polyimide, acrylonitrile-butadiene-styrene plastic, polycarbonate/polymethyl methacrylate composite, glass, polyethylene naphthalate, polyacrylonitrile, and polyether ether ketone.
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| CN115975558A (en) * | 2023-01-10 | 2023-04-18 | 浙江锦美材料科技有限公司 | Laminating adhesive for INS film and laminating method thereof |
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| 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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| CN115975558A (en) * | 2023-01-10 | 2023-04-18 | 浙江锦美材料科技有限公司 | Laminating adhesive for INS film and laminating method thereof |
| CN115975558B (en) * | 2023-01-10 | 2023-08-11 | 锦美星灿新材料(安徽)有限公司 | Laminating adhesive for INS film and laminating method thereof |
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|---|---|
| CN114292619B (en) | 2023-09-08 |
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