CN118146739A - High-light-guide UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive tape and preparation method thereof - Google Patents
High-light-guide UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive tape and preparation method thereof Download PDFInfo
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- CN118146739A CN118146739A CN202410231825.8A CN202410231825A CN118146739A CN 118146739 A CN118146739 A CN 118146739A CN 202410231825 A CN202410231825 A CN 202410231825A CN 118146739 A CN118146739 A CN 118146739A
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 47
- 239000011248 coating agent Substances 0.000 claims abstract description 45
- 239000010410 layer Substances 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims description 45
- 239000000853 adhesive Substances 0.000 claims description 16
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 239000003431 cross linking reagent Substances 0.000 claims description 13
- 239000011265 semifinished product Substances 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 229920006289 polycarbonate film Polymers 0.000 claims description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical group CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 125000004494 ethyl ester group Chemical group 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 3
- 239000004645 polyester resin Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 2
- 150000002513 isocyanates Chemical class 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- 238000002834 transmittance Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 6
- 230000007704 transition Effects 0.000 abstract description 3
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 17
- 239000002390 adhesive tape Substances 0.000 description 12
- 239000012790 adhesive layer Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 230000000181 anti-adherent effect Effects 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
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- 239000010935 stainless steel Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000002346 layers by function Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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Landscapes
- Adhesive Tapes (AREA)
Abstract
The invention relates to the technical field of pressure-sensitive adhesives, in particular to a high-light-guide UV (ultraviolet) visbreaking pressure-sensitive adhesive tape and a preparation method thereof. The high-light-guiding UV anti-adhesion pressure-sensitive adhesive tape prepared by the invention comprises a substrate, wherein both sides of the substrate are coated with a light-guiding coating, and the outside of the light-guiding coating is coated with a UV anti-adhesion pressure-sensitive adhesive layer; wherein the substrate is a light-transmitting film substrate; monodisperse silica microspheres are uniformly dispersed in the light guide coating; the invention designs the light guide coating with the micro-lattice point structure, realizes the purpose of reducing viscosity by injecting the UV light source from the side, has wider application scene, uses less raw material types, has simple overall structure, does not need to arrange a transition layer, reduces the thickness, obviously reduces the production difficulty and the production cost, reduces the application limitation, and is more suitable for large-scale production and use requirements.
Description
Technical Field
The invention relates to the technical field of pressure-sensitive adhesives, in particular to a high-light-guide UV (ultraviolet) visbreaking pressure-sensitive adhesive tape and a preparation method thereof.
Background
The UV subtracts viscose area is mainly applied to various electronic components such as wafer piece, glass, LED chip, semiconductor and cuts the protection, and winding displacement location in the process is fixed, and fixed the repair etc. of accessory, and the fixed use between cell-phone lithium cell and the cell-phone medium plate is easy-to-pull glue generally at present, realizes repairing through the mode that the tensile is reduced the viscosity, and easy-to-pull glue has following shortcoming:
1. The risk of fracture exists during the dismantling process, repeated operation is needed, and the efficiency is affected;
2. The easy-to-pull adhesive is a substrate-free adhesive, and the raw material cost is high;
3. yi Lajiao has thick adhesive layer, lower production efficiency and high manufacturing cost;
the same function of the easy-to-pull adhesive can be realized by using the UV anti-sticking double-sided adhesive.
For example, in chinese patent publication No. CN117210162a, a UV anti-adhesion protective film and a method for preparing the same are disclosed, which comprises the following steps of firstly coating a layer of magnetically controlled color-changing functional layer on a substrate, then respectively coating a layer of protective layer and a layer of UV anti-adhesion adhesive layer on the functional layer, and finally forming a separation film on the anti-adhesion adhesive layer, wherein the working principle of the separation film is as follows: under the condition that the UV capacity is 200mJ, the viscosity of the UV-reduced adhesive before irradiation is more than 3000gf, and the viscosity after irradiation is less than 20gf, so that the UV-reduced adhesive is easy to fall off.
However, since the lithium battery of the mobile phone and the middle plate of the mobile phone are not transparent, the similar application is limited in that the UV light cannot directly irradiate the UV glue surface, the viscosity reduction effect cannot be realized, and meanwhile, the production difficulty is high and the cost is high.
Therefore, in the chinese patent with publication No. CN217149046U, a transparent UV double-sided adhesive tape for fixing a lithium battery of a mobile phone is disclosed, which comprises a first UV adhesive layer, a light guiding film and a second UV adhesive layer that are sequentially bonded; the first UV adhesive layer is adhered to the mobile phone lithium battery, and the second UV adhesive layer is adhered to the mobile phone shell; wherein at least a portion of the light guiding film protrudes from the lithium battery of the mobile phone to form an outer side portion configured to transmit UV light to the first UV glue layer and the second UV glue layer when the outer side portion is irradiated by an external UV light source; plays the bonding effect through first UV glue film and second UV glue film, and the light guide effect has just been played to the light guide membrane part that exposes, shines the UV light source from the side when dismantling, utilizes the light guide effect of light guide membrane to conduct the illumination of UV light for first UV glue film and second UV glue film realize reducing the viscidity, thereby reaches the purpose of dismantling the battery.
Although the problem can be solved through side irradiation, the UV double-sided adhesive tape is complex in structure and needs to be provided with a transition layer, so that the production cost is greatly improved, the overall thickness is greatly increased, the UV light irradiation amount received by two UV adhesive layers in unit time is small, and the application limitation is increased.
In order to solve the problems, the invention provides a high light guide UV (ultraviolet) visbreaking pressure-sensitive adhesive tape.
Disclosure of Invention
The invention aims to provide a high-light-guide UV (ultraviolet) visbreaking pressure-sensitive adhesive tape so as to solve the problems in the background art.
In order to solve the technical problems, the invention provides the following technical scheme:
The high light-guiding UV anti-adhesion pressure-sensitive adhesive tape comprises a substrate, wherein both sides of the substrate are coated with a light-guiding coating, and the outside of the light-guiding coating is coated with a UV anti-adhesion pressure-sensitive adhesive layer;
Wherein the substrate is a light-transmitting film substrate;
monodisperse silica microspheres are uniformly dispersed in the light guide coating to form a micro-lattice point structure.
More optimally, the light guide coating comprises the following components in parts by weight:
more optimally, the UV visbreaking pressure-sensitive adhesive layer comprises the following components in parts by weight:
More preferably, the first solvent is butanone and the first crosslinking agent is blocked isocyanate.
More preferably, the second solvent is ethyl ester and the second crosslinking agent is an isocyanate crosslinking agent.
More optimally, the light-transmitting film substrate is a polycarbonate film, when the high-light-guiding UV (ultraviolet) visbreaking pressure-sensitive adhesive tape is prepared, a comma scraper process, a dimple process or an extrusion process is used for coating the light-guiding coating on two sides of the polycarbonate film, and the UV visbreaking pressure-sensitive adhesive layer is coated on the light-guiding coating on two sides.
More preferably, the thickness of the light guiding coating is less than or equal to the particle size of the monodisperse silica microspheres.
The invention also provides a preparation method of the high-light-guide UV visbreaking pressure-sensitive adhesive tape, which comprises the following steps:
s1, preparing light guide coating glue, namely selecting high-transmittance polyester resin, adding a solvent I, and stirring at the speed of 1100r/min for 25min; adding a first cross-linking agent accounting for 10% of the mass of the glue, and stirring at the speed of 1100r/min for 25min to obtain the light-guiding coating glue;
S2, preparing glue of the UV viscosity-reducing pressure-sensitive adhesive layer, selecting the UV viscosity-reducing pressure-sensitive adhesive, adding a solvent II, adjusting the solid content of the glue to 30%, and stirring at the speed of 1100r/min for 25min;
Adding a photoinitiator accounting for 2% of the mass of the glue, and stirring at the speed of 1100r/min for 25min; adding a second cross-linking agent accounting for 1% of the mass of the glue, and stirring at the speed of 1100r/min for 25min to obtain the UV viscosity-reducing glue;
S3, preparing a high-light-guiding UV (ultraviolet) visbreaking pressure-sensitive adhesive tape, firstly, carrying out corona on the two sides of a high-permeability polycarbonate film with the thickness of 0.15mm, wherein the corona power is set to be 2kw;
Secondly, setting 150 ℃ in a high-temperature area of an oven to obtain a semi-finished product I, wherein the thickness of the coating is 2 mu m;
then, coating the UV visbreaking pressure-sensitive adhesive layer glue prepared in the step S2 with the thickness of 25 mu m on a 50 mu m organosilicon release film, setting the temperature high-temperature area of an oven to 100 ℃, and attaching any one surface of the semi-finished product to obtain a semi-finished product II, wherein the step is required to be operated under a yellow light lamp;
Finally, the UV visbreaking pressure-sensitive adhesive layer glue prepared in the step S2 with the thickness of 25 μm is coated on a 30 μm organosilicon release film, the temperature high temperature area of an oven is set to 150 ℃, and the adhesive is attached to the light-guiding coating of the semi-finished product II;
And after the rolling is finished, bagging and packaging by using an aluminum plastic film to obtain a required high-light-guide UV visbreaking double-sided adhesive finished product, and placing the high-light-guide UV visbreaking double-sided adhesive into a constant temperature chamber at 50 ℃, curing and preserving for 72 hours.
More preferably, the UV-visbreaking pressure-sensitive adhesive layer glue in step S2 and step S3 needs to be operated under a yellow light.
Compared with the prior art, the invention has the following beneficial effects:
(1) In the invention, a plurality of monodisperse silica microspheres are uniformly dispersed in the light guide coating glue to form a light guide coating, so that a micro-lattice point structure can be formed in the light guide coating; after the high-light-guiding UV visbreaking double-sided adhesive tape is adhered, UV light propagates in the light-guiding coating and is refracted through the micro-lattice point structure to break the total reflection phenomenon, so that the purpose of turning UV light is achieved, the UV light irradiated on the side can be refracted on the UV visbreaking adhesive water layer, the UV light irradiation amount received by the UV visbreaking adhesive water layer in unit time is greatly improved, and the visbreaking effect is quickly achieved;
(2) According to the invention, the light guide coating with the micro-lattice point structure is designed, the purpose of reducing viscosity by injecting the UV light source from the side surface is realized, and the application scene is wider;
(3) In the invention, the used raw materials are few in variety, the whole structure is simple, a transition layer is not required to be arranged, the thickness is reduced, the production difficulty and the production cost are obviously reduced, the application limitation is reduced, and the invention is more suitable for large-scale production and use requirements.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
Fig. 1 is a schematic diagram of a high light guiding UV viscosity reducing double-sided adhesive tape structure prepared by the present invention.
Wherein, 1, high light transmission substrate; 2. a light guide layer; 3. UV-tack-reducing pressure-sensitive adhesive layer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
When the existing UV anti-adhesive tape is irradiated on the side, on one hand, the irradiation amount of UV light received by the anti-adhesive layer is small, on the other hand, the anti-adhesive layer is an optically sparse medium, the light guide film is an optically dense medium, and all reflection phenomena can occur when the UV light of the light guide film is irradiated on the side, so that the UV light in the middle part cannot be refracted and irradiated on the anti-adhesive layer, and the anti-adhesive effect is greatly reduced.
The present invention thus improves the structure and method of making a UV-tack-reducing pressure-sensitive adhesive tape, and the preparation of a highly light-guiding UV-tack-reducing pressure-sensitive adhesive tape to solve the above-described problems.
Preparation of high-light-conductivity UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive tape
Step one, preparing light guide coating glue: selecting high light-transmitting polyester resin, using butanone as a solvent, adjusting the solid content of the glue to 20%, and stirring at the speed of 1100r/min for 25min; adding monodisperse silica microspheres accounting for 5% of the mass of the glue, and stirring at the speed of 1100r/min for 25min; and adding a cross-linking agent accounting for 10% of the mass of the glue, and stirring at the speed of 1100r/min for 25min to obtain the light-guiding coating glue.
In this step, the raw materials used are shown in table 1.
TABLE 1 supplier of substances and license plate Table for use in step one
Step two, preparing UV viscosity reducing glue: selecting a UV visbreaking pressure sensitive adhesive, using ethyl ester as a solvent, adjusting the solid content of the glue to 30%, and stirring at the speed of 1100r/min for 25min; adding a photoinitiator accounting for 2% of the mass of the glue, and stirring at the speed of 1100r/min for 25min; and adding a second cross-linking agent accounting for 1% of the mass of the glue, and stirring at the speed of 1100r/min for 25min to obtain the UV viscosity-reducing glue, wherein the step is required to be operated under a yellow light.
In this step, the raw materials used are shown in table 2.
Table 2 shows the suppliers and branding of the materials used in step two
| Raw materials | Suppliers (suppliers) | Number plate |
| UV viscosity-reducing pressure-sensitive adhesive | Suzhou Shihua | / |
| Solvent II: ethyl ester | Baogarui chemical industry | Acetic acid ethyl ester |
| Crosslinking agent II | Dong Cao Huagong | L75 |
| Photoinitiator | Ai Jianmeng A | OmniradTPO |
Step three: preparation of high light guiding UV visbreaking pressure sensitive adhesive tape:
1. corona was applied to both sides of a high-permeability polycarbonate film having a thickness of 0.15mm, and the corona power was set to 2kw;
2. the light-guiding coating glue in the first step of double-sided coating of the polycarbonate film is set at 150 ℃ in a high-temperature area of an oven, and the thickness of the coating is 2 mu m, so that a semi-finished product I is obtained;
3. coating a 25 μm organic silicon release film with UV glue reducing water in the second step, setting the temperature of an oven to be 100 ℃ in a high-temperature area, and attaching any one surface of the semi-finished product to obtain a second semi-finished product, wherein the second step is required to be operated under a yellow light lamp;
4. coating a 30 mu m organic silicon release film with UV (ultraviolet) viscosity reducing glue in the second step, setting the temperature of an oven to be 150 ℃ in a high-temperature area, attaching the film to a light guide coating of a semi-finished product II, and packaging by using an aluminum plastic film bagging after winding is completed to obtain the required high-light-guide UV viscosity reducing double-sided adhesive tape, wherein the step is required to be operated under a yellow light lamp;
5. and (3) placing the high-light-conductivity UV visbreaking double-sided adhesive tape into a constant temperature chamber at 50 ℃, and curing and preserving for 72 hours.
In order to more intuitively represent the performance of the high-light-guiding UV (ultraviolet) visbreaking double-sided adhesive tape prepared in the invention, a plurality of examples and comparative examples are provided, and specific project parameters are shown in table 3.
TABLE 3 tables of parameters for each item in different examples and comparative examples
Different examples and comparative examples were prepared and the prepared high light guide UV-visbreaking double sided tape was subjected to performance testing.
Performance test conditions and methods:
the following tests were conducted under conditions of 23-50% RH yellow light at room temperature.
180 ° Peel force test before UV:
The non-test surface release film of the UV visbreaking double-sided adhesive tape with high light guide to be detected is replaced by an opaque aluminum foil, and then cut into adhesive tape sample strips with the length of 150mm multiplied by the width of 25mm, and the four sides of the sample strips are smooth and flat without broken filaments and obvious edge warping.
Attaching the adhesive surface of the spline to a stainless steel mirror surface steel plate (150 mm long by 50mm wide by 2mm thick and surface roughness: 10nm +/-10 nm) meeting the material requirements of GB/T2792 peeling test steel plates, wherein the lamination is smooth and the phenomena of bubbles, impurities, wrinkles and the like cannot be caused;
Rolling the spline back and forth on the stainless steel mirror surface steel plate attached with the spline for 1 time at a speed of 300mm/min by using a 2kg roller, standing for 20min under a test environment (23-50% RH), performing 180 DEG peel strength test under the test environment (23-50% RH) after the standing is completed by using a stretcher, wherein the peel speed is 300mm/min, the number of test samples is 3, and taking the arithmetic average value of the 3 test results as a peel force result.
180 ° Peel force test after UV:
The non-test surface release film of the UV visbreaking double-sided adhesive tape with high light guide to be detected is replaced by an opaque aluminum foil, and then cut into adhesive tape sample strips with the length of 150mm multiplied by the width of 25mm, and the four sides of the sample strips are smooth and flat without broken filaments and obvious edge warping.
Attaching the adhesive surface of the spline to a stainless steel mirror surface steel plate (150 mm long by 50mm wide by 2mm thick and surface roughness: 10nm +/-10 nm) meeting the material requirements of GB/T2792 peeling test steel plates, wherein the lamination is smooth and the phenomena of bubbles, impurities, wrinkles and the like cannot be caused;
Rolling the spline on the stainless steel mirror surface steel plate attached with the spline back and forth for 1 time at a speed of 300mm/min by using a 2kg roller, standing for 20min under a test environment (23-50% RH), standing, vertically placing in a UV lamp box, irradiating for 30 seconds by ultraviolet light with a wavelength of 365nm in a direction perpendicular to the attaching direction of the spline, and irradiating ultraviolet light energy of more than 600mJ/cm 2;
180 DEG peel strength test is carried out under a testing environment (23-50% RH) after irradiation, the peeling speed is 300mm/min, the number of test samples is 3, and the arithmetic average value of the 3 test results is taken as the peeling force result.
The specific test results are shown in table 4.
Table 4 table of the results of the performance test of the high light guiding UV pressure sensitive adhesive tapes prepared in the different examples and comparative examples
As can be seen in combination with tables 3 and 4:
1. the monodisperse silica microspheres with different particle sizes are selected in the embodiment 01 and the embodiment 02, and the light guide coatings with different thicknesses are coated, so that lateral UV (ultraviolet) viscosity reduction can be realized, and the purpose of the expected invention is achieved.
2. Comparative example 01 was not added with monodisperse silica microspheres, and the UV light was totally reflected, failing to achieve the viscosity reduction effect.
3. The three groups of data of the example 01, the comparative example 04 and the comparative example 05 show that the monodisperse silica microspheres can realize the micro-lattice structure only by contacting the substrate, namely the thickness of the light guide coating adhesive film is less than or equal to the particle size of the monodisperse silica microspheres, and the purpose of turning UV light is achieved by destroying total reflection.
4. The data of three groups of example 01, comparative example 02 and comparative example 03 show that the addition amount of the monodisperse silica microspheres is too low or too high, and the purpose of complete viscosity reduction cannot be achieved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A highly light-conductive UV-tack-reducing pressure-sensitive adhesive tape, characterized in that: the light guide coating comprises a substrate, wherein both sides of the substrate are coated with a light guide coating, and a UV (ultraviolet) visbreaking pressure-sensitive adhesive layer is coated outside the light guide coating;
wherein the substrate is a light-transmitting film substrate;
monodisperse silica microspheres are uniformly dispersed in the light guide coating to form a micro-lattice point structure.
2. The high light guide UV visbreaking pressure sensitive adhesive tape of claim 1, wherein the light guide coating comprises the following components in parts by weight:
3. The high light guide UV-reducing pressure-sensitive adhesive tape of claim 1, wherein the UV-reducing pressure-sensitive adhesive layer comprises the following components in parts by weight:
4. The high light guiding UV reduced tack pressure sensitive adhesive tape of claim 2, wherein: the first solvent is butanone, and the first crosslinking agent is blocked isocyanate.
5. A highly optically transmissive UV-reduced pressure sensitive adhesive tape as claimed in claim 3, wherein: the second solvent is ethyl ester, and the second crosslinking agent is isocyanate crosslinking agent.
6. The high light guiding UV reduced tack pressure sensitive adhesive tape of claim 1, wherein: when the high-light-guiding UV visbreaking pressure-sensitive adhesive tape is prepared, the light-guiding coating is coated on the two sides of the polycarbonate film by using a comma scraper process, a dimple process or an extrusion process, and the UV visbreaking pressure-sensitive adhesive layer is coated on the light-guiding coatings on the two sides.
7. The high light guiding UV reduced tack pressure sensitive adhesive tape of claim 1, wherein: the thickness of the light guide coating is less than or equal to the particle size of the monodisperse silica microspheres.
8. The preparation method of the high light-guiding UV visbreaking pressure-sensitive adhesive tape is characterized by comprising the following steps:
s1, preparing light guide coating glue, namely selecting high-transmittance polyester resin, adding a solvent I, and stirring at the speed of 1100r/min for 25min; adding a first cross-linking agent accounting for 10% of the mass of the glue, and stirring at the speed of 1100r/min for 25min to obtain the light-guiding coating glue;
S2, preparing glue of the UV viscosity-reducing pressure-sensitive adhesive layer, selecting the UV viscosity-reducing pressure-sensitive adhesive, adding a solvent II, adjusting the solid content of the glue to 30%, and stirring at the speed of 1100r/min for 25min;
Adding a photoinitiator accounting for 2% of the mass of the glue, and stirring at the speed of 1100r/min for 25min; adding a second cross-linking agent accounting for 1% of the mass of the glue, and stirring at the speed of 1100r/min for 25min to obtain the UV viscosity-reducing glue;
S3, preparing a high-light-guiding UV (ultraviolet) visbreaking pressure-sensitive adhesive tape, firstly, carrying out corona on the two sides of a high-permeability polycarbonate film with the thickness of 0.15mm, wherein the corona power is set to be 2kw;
Secondly, setting 150 ℃ in a high-temperature area of an oven to obtain a semi-finished product I, wherein the thickness of the coating is 2 mu m;
then, coating the UV visbreaking pressure-sensitive adhesive layer glue prepared in the step S2 with the thickness of 25 mu m on a 50 mu m organosilicon release film, setting the temperature high-temperature area of an oven to 100 ℃, and attaching any one surface of the semi-finished product to obtain a semi-finished product II, wherein the step is required to be operated under a yellow light lamp;
Finally, the UV visbreaking pressure-sensitive adhesive layer glue prepared in the step S2 with the thickness of 25 μm is coated on a 30 μm organosilicon release film, the temperature high temperature area of an oven is set to 150 ℃, and the adhesive is attached to the light-guiding coating of the semi-finished product II;
And after the rolling is finished, bagging and packaging by using an aluminum plastic film to obtain a required high-light-guide UV visbreaking double-sided adhesive finished product, and placing the high-light-guide UV visbreaking double-sided adhesive into a constant temperature chamber at 50 ℃, curing and preserving for 72 hours.
9. The method for preparing the high light guide UV (ultraviolet) visbreaking pressure-sensitive adhesive tape according to claim 8, wherein the method comprises the following steps: the step S2 and the step S3 are performed under a yellow light when the UV-visbreaking pressure-sensitive adhesive layer glue is coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410231825.8A CN118146739A (en) | 2024-03-01 | 2024-03-01 | High-light-guide UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive tape and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410231825.8A CN118146739A (en) | 2024-03-01 | 2024-03-01 | High-light-guide UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive tape and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118146739A true CN118146739A (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410231825.8A Pending CN118146739A (en) | 2024-03-01 | 2024-03-01 | High-light-guide UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive tape and preparation method thereof |
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| Country | Link |
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| CN (1) | CN118146739A (en) |
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2024
- 2024-03-01 CN CN202410231825.8A patent/CN118146739A/en active Pending
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