CN117363309A - Plastic laminating UV composition applied to lens molding and preparation method thereof - Google Patents
Plastic laminating UV composition applied to lens molding and preparation method thereof Download PDFInfo
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- CN117363309A CN117363309A CN202311459892.7A CN202311459892A CN117363309A CN 117363309 A CN117363309 A CN 117363309A CN 202311459892 A CN202311459892 A CN 202311459892A CN 117363309 A CN117363309 A CN 117363309A
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- 238000002360 preparation method Methods 0.000 title abstract description 28
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- GUCYFKSBFREPBC-UHFFFAOYSA-N [phenyl-(2,4,6-trimethylbenzoyl)phosphoryl]-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=C(C)C=C(C)C=C1C GUCYFKSBFREPBC-UHFFFAOYSA-N 0.000 claims description 2
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 claims description 2
- VFHVQBAGLAREND-UHFFFAOYSA-N diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 VFHVQBAGLAREND-UHFFFAOYSA-N 0.000 claims description 2
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- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 10
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- QNODIIQQMGDSEF-UHFFFAOYSA-N (1-hydroxycyclohexyl)-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)C1(O)CCCCC1 QNODIIQQMGDSEF-UHFFFAOYSA-N 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
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Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
A plastic laminating UV composition applied to lens molding and a preparation method thereof. The composition comprises the following components in parts by weight: 20-50 parts of polyurethane acrylate oligomer; 5-20 parts of adhesive resin; 5-20 parts of special functional acrylate resin; 30-70 parts of monofunctional acrylic acid; 1-5 parts of photoinitiator. The preparation method comprises the steps of sequentially adding the components in the formula into a dispersing cylinder according to a certain proportion, and uniformly stirring to form a mixture.
Description
Technical Field
The invention relates to the technical field of UV adhesives, in particular to a plastic laminating UV composition applied to lens molding, and a preparation method and application thereof.
Background
The basic structure of the polarizer includes: the most middle PVA (polyvinyl alcohol), two layers of TAC (cellulose triacetate). The PVA layer has a polarizing effect, however, PVA is easy to hydrolyze, so that in order to protect the physical properties of the polarizing film, a layer of TAC film with high light transmittance, good water resistance and certain mechanical strength is compounded on two sides of the PVA for protection, and a polarizer original plate is formed. The light characteristics are changed by adjusting the vibration direction of the light, the polaroid can filter out the light rays from the parallel direction, the reflection and the flash are reduced, and the visual field definition is improved. In strong sunlight, the polarizer can reduce the sensitivity of eyes to dazzling rays, so that the vision is more comfortable, and the eye fatigue is relieved. The polaroid can also eliminate or reduce light rays from specific directions, enhance contrast and enable the outline of an object to be clearer. Therefore, the polaroid is widely applied to the electronic industry, the optical field, the communication industry and the like.
For subsequent hot-bending injection molding of lenses, the original plate of the polarizer is typically compounded with PC material using an adhesive. Most of traditional adhesives are thermosetting adhesives containing solvents, are not friendly to the environment, and have the problems of high energy consumption and low efficiency. The UV adhesive can be converted from a liquid state to a solid state within a few seconds under the irradiation of ultraviolet rays, has the advantages of high bonding strength, high transparency, no yellowing, no whitening, good weather resistance, moderate viscosity, higher bonding strength for plastics and metals, and good application effects for bonding, reinforcing and reinforcing various plastics such as metal and PMMA, PC and PET, PVC and PC, and the like, and is widely applied to industries such as microelectronics, optical communication, photoelectricity, medical treatment, home furnishings, aerospace, and the like. However, the general UV adhesive is easy to have the problems of reduced adhesion, stress lines and the like during high-temperature hot bending injection molding, is easy to deform after being cracked and put on a frame to cause spherical astigmatism, and has the problem of brittle caused by insufficient impact resistance.
Disclosure of Invention
The invention aims to provide a plastic fitting UV composition applied to lens molding, so as to at least partially solve the technical problems.
Another object of the present invention is to provide a method for preparing a plastic conformable UV composition for lens molding as described above.
It is a further object of the present invention to provide the use of a plastic conformable UV composition as described above for lens molding.
In order to achieve the above purpose, the technical scheme adopted by the invention comprises the following steps:
the plastic laminating UV composition for lens molding comprises the following components in parts by weight:
preferably, the adhesive resin is one or more of polyester acrylate, pure acrylate and polyurethane acrylate;
preferably, the special functional acrylate resin is a photo-thermal dual cure resin.
The inventors have further found that combining an aliphatic urethane acrylate with a specific adhesive resin is effective in improving the adhesion of the UV composition because, after UV curing, the aliphatic urethane acrylate resin has chemical bonding and adsorption to the substrate to be bonded, while the adhesive resin has a mechanical anchoring effect to the substrate to be bonded, and the combination of the two is effective in improving the initial adhesion. The addition of the photo-thermal dual-curing resin can ensure that unreacted thermosetting components can continuously react in the high-temperature forming process during photo-curing, and further improve the adhesive force, so that the adhesive force loss reduction caused by high temperature and high humidity can be compensated.
Preferably, the urethane acrylate oligomer is a difunctional macromolecular aliphatic urethane acrylate resin.
The urethane acrylate oligomer functions to provide chemical bonding and adsorption with the substrate to be bonded, and is a main component providing a strong primary adhesion.
Further, the inventors found that the urethane acrylate oligomer should be contained in an amount of 20 to 50 parts because the content of more than 50 parts makes the viscosity of the UV composition high, which is disadvantageous for construction; if the ratio is less than 20 parts, the adhesion is insufficient.
Preferably, the adhesive resin is one or more of polyester acrylate, pure acrylate and polyurethane acrylate.
The adhesive resin has the function of providing mechanical anchoring effect between the adhesive resin and the adhered substrate, and further enhancing initial adhesion.
Preferably, the special functional acrylate resin is a photo-thermal dual cure acrylate.
The special functional group acrylic resin has the function of ensuring that the adhesive layer can keep better adhesive force under the high-temperature and high-humidity state.
Preferably, the monofunctional acrylic compound is one or more selected from tetrahydrofurfuryl acrylate, isobornyl acrylate, hydroxypropyl acrylate, acryloylmorpholine and N-dimethylacrylamide.
The mono-functional acrylic compound mainly has the functions of diluting, reducing the viscosity of the system and improving the flexibility of the system.
Preferably, the photoinitiator is one or more of 1-hydroxy-cyclohexyl-phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide or phenylbis (2, 4, 6-trimethylbenzoyl) phosphine oxide.
The photoinitiator functions to promote surface and deep curing of the coating.
A method for preparing the plastic laminating UV composition for lens molding, which comprises the following steps:
(1) Uniformly stirring and mixing polyurethane acrylate oligomer, adhesive resin, special functional group acrylate resin, monofunctional group acrylic acid and photoinitiator in a set proportion;
(2) Filtering the mixed product obtained in the step (1) by adopting a filter screen to obtain the plastic laminating UV composition applied to lens molding.
An adhesive coating prepared from a plastic conformable UV composition comprising a polymer as described above for use in lens molding.
The preparation method of the adhesive coating comprises the following steps:
(1) The plastic laminating UV composition applied to lens molding is dripped between two substrates to be laminated in a glue dripping mode, the UV composition is uniformly coated in a rolling mode, the roller coating thickness is 10-30 mu m, and the roller coating speed is 6-10 m/min;
(2) Ultraviolet irradiation, ultraviolet wave band selection between 260-400 nm, ultraviolet energy selection between 300-1200 mJ/cm 2 After solidification formAnd (5) an adhesive coating.
Compared with the prior art, the invention has the beneficial effects that one of the following is included:
the invention is solidified by pure ultraviolet light, has no solvent, can be converted from liquid state to solid state within a few seconds, has low energy consumption and high efficiency, has better toughness, is resistant to high temperature and high humidity, and can not generate stress lines during high temperature hot bending injection molding;
the invention controls the use of the aliphatic polyurethane acrylic resin to provide better initial adhesion, the adhesive force of the adhesive layer is further improved, and a small amount of photo-thermal dual-curing resin is added to improve the high-temperature and high-humidity resistance of the adhesive layer, so that the prepared plastic laminating UV composition applied to lens molding has higher adhesion and better high-temperature and high-humidity resistance, and stress lines and cracks do not appear after high-temperature hot bending injection molding during lens molding;
the invention overcomes the problems that the traditional solvent-containing thermosetting adhesive is not friendly to the environment, has high energy consumption and low efficiency, and the common UV adhesive is not resistant to high temperature and high humidity, has insufficient impact resistance and the like, and creatively provides the plastic laminating UV composition which has no solvent, high temperature and high humidity resistance and excellent toughness and is applied to lens molding.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent.
It should be understood that the methods described in the examples of the present invention are only for illustrating the present invention, and not for limiting the present invention, and that simple modifications to the preparation methods of the present invention under the concept of the present invention are within the scope of the present invention as claimed. The starting materials in both examples and comparative examples are commercially available.
Aliphatic urethane acrylic resin a: DR-U384, available from Changxing materials industries, inc.
Aliphatic urethane acrylic resin B: DR-U388, available from Changxing materials industries, inc.
Aliphatic urethane acrylic resin C: SD860, available from Songda New Material technologies Inc. in Guangzhou.
Adhesive resin a: pure acrylate resin 6533B-40, available from Changxing materials industries, inc.
Adhesive resin B: pure acrylate resin, 353H, available from double bond chemical Co., ltd.
Special functional acrylate resin a: photo-thermal dual-curing resin, B-6009, boxing New Material technologies Co., ltd.
Epoxy acrylic resin a: functionality of 2, B-151H, available from Boxing New Material technologies Co., ltd.
Monofunctional acrylic acid a: EM214C, available from chang materials industries, inc.
Monofunctional acrylic acid B: HPA, available from Songda New Material technologies Co., ltd.
Difunctional acrylic acid a: EM221, available from changxing materials industries, inc.
And (3) a photoinitiator: 184, available from Tianjin Sunday New Material stock Co., ltd.
The invention is further illustrated below with reference to specific examples.
Example 1
The plastic laminating UV composition for lens molding comprises the following components in parts by weight:
the preparation method of the plastic laminating UV composition for lens molding provided by the embodiment comprises the following steps:
(1) Mixing aliphatic polyurethane acrylic resin A (Changxing, DR-U384), adhesive resin A (Changxing, 6533B-40), special functional group acrylic resin A (Boxing, B-6009), mono-functional acrylic acid A (Changxing, EM 214C) and photoinitiator 184 for 1.5h under the condition of normal temperature and light shielding, and filtering by a 200-mesh filter screen to obtain a plastic laminating UV composition applied to lens molding;
(2) The steps are as follows(1) The obtained UV composition is dripped between two substrates to be bonded in a manner of dripping, the UV composition is uniformly coated in a manner of rolling, the roller coating thickness is 25 mu m, the roller coating speed is 8m/min, and then the power is 800mW/cm 2 Energy of 1200mJ/cm 2 And (3) ultraviolet light irradiation and curing for 6s to obtain the adhesive coating.
Example 2
The plastic laminating UV composition for lens molding comprises the following components in parts by weight:
the specific preparation method is the same as in example 1, and the only difference from example 1 is that the aliphatic urethane acrylic resin A is replaced by the aliphatic urethane acrylic resin B, and other components, amounts and preparation methods are the same as in example 1.
Example 3
The plastic laminating UV composition for lens molding comprises the following components in parts by weight:
the specific preparation method is the same as that of example 1, and the only difference from example 1 is that the ratio of the aliphatic urethane acrylic resin A is reduced from 40% to 25%, and other components, amounts and preparation methods are the same as those of example 1.
Example 4
The plastic laminating UV composition for lens molding comprises the following components in parts by weight:
the specific preparation method is the same as in example 1, except that the adhesive resin a is replaced with the adhesive resin B, and other components, amounts and preparation methods are the same as in example 1.
Example 5
The plastic laminating UV composition for lens molding comprises the following components in parts by weight:
the specific preparation method is the same as in example 1, except that the monofunctional acrylic A is replaced with the monofunctional acrylic B, and other components, amounts and preparation methods are the same as in example 1.
Comparative example 1
The plastic laminating UV composition for lens molding comprises the following components in parts by weight:
the specific preparation method is the same as in example 1, and the only difference from example 1 is that epoxy acrylic resin A is used to replace aliphatic urethane acrylic resin A, and other components, amounts and preparation methods are the same as in example 1.
Comparative example 2
The plastic laminating UV composition for lens molding comprises the following components in parts by weight:
the specific preparation method is the same as in example 1, except that the adhesive resin A is not added, and other components, amounts and preparation methods are the same as in example 1.
Comparative example 3
The plastic laminating UV composition for lens molding comprises the following components in parts by weight:
the specific preparation method is the same as in example 1, except that the special functional acrylate resin A is not added, and other components, amounts and preparation methods are the same as in example 1.
Comparative example 4
The plastic laminating UV composition for lens molding comprises the following components in parts by weight:
the specific preparation method is the same as in example 1, except that the difunctional acrylic acid A is used instead of the monofunctional acrylic acid A, and other components, amounts and preparation methods are the same as in example 1.
Comparative example 5
The plastic laminating UV composition for lens molding comprises the following components in parts by weight:
DR-U384 parts;
EM214C 43 parts;
184 2 parts.
The specific preparation method is the same as example 1, except that the adhesive resin a and the special functional acrylate resin a are all replaced with the aliphatic urethane acrylic resin a, and other components, amounts and preparation methods are the same as example 1.
Comparative example 6
The plastic laminating UV composition for lens molding comprises the following components in parts by weight:
the specific preparation method is the same as that of example 1, and the only difference from example 1 is that the ratio of the aliphatic urethane acrylic resin A is reduced from 40% to 15%, and other components, amounts and preparation methods are the same as those of example 1.
Adhesive coating performance test
The coating performance testing method comprises the following steps:
(1) Peel force test: testing according to the test method provided in the standard GB/T2792-2014; the qualification standard is that the stripping force is more than or equal to 4000gf/cm 2 。
(2) Toughness: performing high-temperature hot bending injection molding on the adhesive coating, wherein the conditions are 230 ℃/20s, and observing the surface condition of an injection molding piece after injection molding; the qualification standard is no stress lines and cracks.
(3) High temperature and high humidity resistance: placing the adhesive coating in a constant temperature water tank at 80 ℃, taking out the adhesive coating after 2 hours, wiping off water on the surface, naturally standing for 30 minutes, and testing according to a testing method provided in a standard GB/T2792-2014; the qualification standard is that the peeling force is more than or equal to 3000gf/cm 2 。
The adhesive coatings obtained in examples 1 to 5 and comparative examples 1 to 6 were tested according to the above test methods, and the test results are shown in table 1:
table 1 data for examples and comparative examples
As can be seen from the data in table 1, the plastic laminating UV composition for lens molding provided by the invention has higher adhesive force and better high-temperature and high-humidity resistance, and stress lines and cracks can not appear after hot bending injection molding during lens molding.
Specifically, the adhesive coatings obtained in examples 1 to 5 had peel forces of 4000 to 4700gf/cm 2 The stripping force still ranges from 3500 gf/cm to 4200gf/cm after high temperature and high humidity 2 And no stress lines and cracks exist after high-temperature injection molding.
As can be seen from comparative examples 1, 3, 1 and 6, the ratio of the aliphatic urethane acrylic resin a was reduced and even completely replaced with other types of resins, and the resulting plastic-bonded UV composition for lens molding was reduced in both peel force and peel force after high temperature and high humidity resistance; wherein the toughness of comparative example 1 is reduced, and cracks appear after high temperature injection molding, compared with example 1.
As can be seen from comparative examples 1, 2, 3 and 5, the resulting plastic-applied UV composition for lens molding, which is obtained without adding an adhesive resin and/or a special functional acrylate resin, has reduced peel force and reduced peel force after high temperature and high humidity resistance.
As can be seen from comparative examples 1 and 4, the use of difunctional acrylic acid instead of monofunctional acrylic acid resulted in a plastic laminating UV composition for lens molding which had significantly reduced peel force and peel force after high temperature and high humidity resistance.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (11)
1. The plastic laminating UV composition for lens molding is characterized by comprising the following components in parts by weight:
2. the plastic conformable UV composition for lens molding according to claim 1, wherein:
3. the plastic conformable UV composition for lens molding according to claim 1, wherein the urethane acrylate oligomer is a difunctional macromolecular aliphatic urethane acrylate resin.
4. The plastic conformable UV composition for lens molding according to claim 1, wherein the adhesion resin is one or more of polyester acrylate, pure acrylate, polyurethane acrylate.
5. The plastic conformable UV composition for lens molding according to claim 1, wherein the special functional acrylate resin is a photo-thermal dual cure acrylate.
6. The plastic conformable UV composition for lens molding according to claim 1, wherein the monofunctional acrylic compound is one or more of tetrahydrofurfuryl acrylate, isobornyl acrylate, hydroxypropyl acrylate, acryloylmorpholine, N-dimethylacrylamide.
7. The plastic conformable UV composition for lens molding according to claim 1, wherein the photoinitiator is one or more of 1-hydroxy-cyclohexyl-phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, or phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide.
8. The method for preparing a plastic conformable UV composition for lens molding according to any one of claims 1 to 7, comprising the steps of:
(1) Uniformly stirring and mixing polyurethane acrylate oligomer, adhesive resin, special functional group acrylate resin, monofunctional group acrylic compound and photoinitiator in a set proportion;
(2) Filtering the mixed product obtained in the step (1) by adopting a filter screen to obtain the plastic laminating UV composition applied to lens molding.
9. The method according to claim 8, wherein the mixing step in step (1) is performed under stirring; the mixing step in the step (1) is carried out under the condition of normal temperature and light shielding; the mixing time is 1-2 h; the filtering step in the step (2) is carried out by adopting a 200-mesh filter screen.
10. An adhesive coating comprising the plastic conformable UV composition for lens molding according to any one of claims 1 to 7.
11. The method of preparing an adhesive coating as claimed in claim 10, comprising the steps of:
(1) The plastic laminating UV composition applied to lens molding according to any one of claims 1 to 7 is dripped between two substrates to be laminated in a glue dripping mode, the plastic laminating UV composition is uniformly coated in a rolling mode, the roller coating thickness is 10-30 μm, and the roller coating speed is 6-10 m/min;
(2) Ultraviolet irradiation, ultraviolet wave band selection between 260-400 nm, ultraviolet energy selection between 300-1200 mJ/cm 2 And forming an adhesive coating after curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311459892.7A CN117363309A (en) | 2023-11-03 | 2023-11-03 | Plastic laminating UV composition applied to lens molding and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311459892.7A CN117363309A (en) | 2023-11-03 | 2023-11-03 | Plastic laminating UV composition applied to lens molding and preparation method thereof |
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| CN117363309A true CN117363309A (en) | 2024-01-09 |
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| CN202311459892.7A Pending CN117363309A (en) | 2023-11-03 | 2023-11-03 | Plastic laminating UV composition applied to lens molding and preparation method thereof |
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| CN (1) | CN117363309A (en) |
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