CN112736213B - Solvent composition for disassembling flexible optical device and application - Google Patents
Solvent composition for disassembling flexible optical device and application Download PDFInfo
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
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Abstract
The application relates to the technical field of optical part processing, and provides a solvent composition for disassembling a flexible optical device, which comprises the following components in percentage by weight based on 100% of the total mass of the solvent composition: 35-45% of C1-C7 chain alkane; 20-30% of ketone solvent; 35-45% of ester solvent; the solvent composition can effectively remove the optical adhesive layer of the ultrathin flexible optical device, ensures no corrosivity, cannot cause scratches on the attaching surface of the optical device, ensures that the obtained flexible optical device cannot deform and warp after being disassembled, and is favorable for disassembling and reusing the optical device containing the ultrathin OCA optical adhesive layer.
Description
Technical Field
The application belongs to the technical field of optical part processing, and particularly relates to a solvent composition for disassembling a flexible optical device and application thereof.
Background
The flexible photonic device is not limited by the rigid physical state of the traditional optoelectronic device, can be bent, folded and stretched, so that the unique optoelectronic property of the device can be realized and regulated, and the development mode and the application space of the traditional optoelectronic device are greatly expanded.
In the processing industry of the existing flexible optical devices, optical display devices such as OLED (organic light emitting diode) and the like are generally used as an adhesive to be attached to TP (touch panel), CG (CG), a bracket and the like, and the thickness of OCA glue is required to be controlled to be thinner along with higher and higher attaching requirements, so that the firmness of the OCA glue is inevitably improved. The OCA optical adhesive is one of the important raw materials of the touch screen, is prepared by manufacturing the optical acrylic adhesive into a non-base material, then laminating a layer of release film on the upper bottom layer and a layer of release film on the lower bottom layer respectively, is a double-sided laminating adhesive tape without a base material, is the best adhesive of the touch screen, has higher clarity, high light transmittance (total light transmittance is more than 99 percent), high adhesive force, high weather resistance, water resistance, high temperature resistance and ultraviolet resistance, has controlled thickness, provides uniform spacing, cannot generate yellowing after long-term use, and is firmly laminated. Then, for the assembly that attaches defective products needs to be disassembled and recovered, corresponding processing methods need to be provided to decompose OCA glue and optical materials.
In general, for flexible optical devices, methods such as linear cutting, low-temperature freezing, laser cutting and corrosive reagents are adopted to strip the OCA glue from the optical devices, but the OCA glue is thinner and thinner, the physical method is adopted to disassemble products, scratches cannot be avoided on the OLED and the support binding surface, and the problems of OLED warping, folding and the like are difficult to solve by the physical disassembling method; and adopt corrosive reagent to disassemble, because OCA glues thinly, can hang down optical device and cause the corruption in the use, cause the loss easily.
Disclosure of Invention
The application aims to provide a solvent composition for disassembling a flexible optical device and application thereof, and aims to solve the problem that the optical device is easily damaged by a disassembling method of the flexible optical device in the prior art.
In order to achieve the purpose of the application, the technical scheme adopted by the application is as follows:
in a first aspect, the present application provides a solvent composition for disassembling a flexible optical device, comprising the following components in percentage by weight, based on 100% of the total mass of the solvent composition:
35 to 45 percent of C1 to C7 chain alkane;
20 to 30 percent of ketone solvent;
35 to 45 percent of ester solvent.
In a second aspect, the present application provides a method of disassembling a flexible optical device, comprising the steps of:
providing a flexible optical device, bending the flexible optical device to separate a substrate support of the flexible optical device to form a crack and expose the OCA optical adhesive layer;
and dropwise adding a solvent composition for disassembling the flexible optical device into the crack to dissolve the OCA optical adhesive layer, thereby completing the disassembly of the flexible optical device.
According to the first aspect of the application, the solvent composition for disassembling the flexible optical device comprises C1-C7 chain alkanes, ketone solvents and ester solvents, and can be used for dissolving ultrathin optical cement to complete device separation. The solvent composition can effectively remove an optical adhesive layer of an ultrathin flexible optical device, ensures that the surface roughness of the surface is not changed, cannot cause scratches on the joint surface of the optical device, ensures that the obtained flexible optical device cannot deform and warp after being disassembled, and is favorable for disassembling and reusing the optical device containing the ultrathin OCA optical adhesive layer.
According to the method for disassembling the flexible optical device, the support is firstly separated to form the crack with an angle, the solvent composition for disassembling the flexible optical device is dripped into the crack, the solvent composition is fully contacted with the optical adhesive layer, the solvent composition is used for effectively dissolving the optical adhesive, the adhesiveness of the optical adhesive is weakened to disappear, the device is separated, and the disassembly of the flexible optical device is completed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a structural diagram of a flexible optical device provided in an embodiment of the present application.
Fig. 2 is a block diagram of a flexible optical device for forming cracks according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly apparent, the present application is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In this application, the term "and/or" describes an association relationship of associated objects, which means that there may be three relationships, for example, a and/or B, which may mean: a alone, A and B together, and B alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In this application, "at least one" means one or more, "a plurality" means two or more. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, "at least one (a), b, or c", or "at least one (a), b, and c", may each represent: a, b, c, a-b (i.e., a and b), a-c, b-c, or a-b-c, wherein a, b, and c may be single or plural, respectively.
It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, some or all of the steps may be executed in parallel or executed sequentially, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The weight of the related components mentioned in the description of the embodiments of the present application may not only refer to the specific content of each component, but also represent the proportional relationship of the weight among the components, and therefore, the content of the related components is scaled up or down within the scope disclosed in the description of the embodiments of the present application as long as it is scaled up or down according to the description of the embodiments of the present application. Specifically, the mass described in the specification of the embodiments of the present application may be a mass unit known in the chemical industry field such as μ g, mg, g, kg, etc.
The terms "first" and "second" are used for descriptive purposes only and are used for distinguishing purposes such as substances from one another and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. For example, a first XX may also be referred to as a second XX, and similarly, a second XX may also be referred to as a first XX, without departing from the scope of embodiments of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In a first aspect, the embodiments of the present application provide a solvent composition for disassembling a flexible optical device, which includes the following components in percentage by weight, based on 100% of the total mass of the solvent composition:
35 to 45 percent of C1 to C7 chain alkane;
20 to 30 percent of ketone solvent;
35 to 45 percent of ester solvent.
According to the solvent composition for disassembling the flexible optical device, the composition comprises C1-C7 chain alkane, ketone solvents and ester solvents, and the solvent composition can be used for dissolving ultrathin optical cement to complete separation of the device. The ketone substance and the ester substance can act synergistically, the degreasing capability is high, the optical cement can be dissolved, the dissolving capability of the solvent composition is enhanced, the stability of the chain alkane of C1-C7 is high, the optical device material can be protected, the solvent composition can effectively dissolve the optical cement, the adhesiveness of the optical cement is weakened to disappear, the device is separated, no corrosivity exists, scratches can not be generated on the attaching surface of the optical device, the obtained flexible optical device can not deform and warp after being disassembled, and the optical device comprising the ultrathin OCA optical cement layer can be disassembled and reused.
Specifically, the solvent composition comprises 35 to 45 weight percent of C1 to C7 chain alkane based on 100 percent of the total mass of the solvent composition. Alkanes are the most chemically stable hydrocarbons, providing alkanes as the major component of the solvent composition and providing a stable reaction environment that protects the optics materials during use. If the addition amount of the C1-C7 chain alkane is too large, the addition amount of the ketone solvent and the ester solvent is too small, and the disassembly effect of the device is further influenced; if the addition amount of the C1-C7 chain alkane is too small, the addition amount of other components is too large, so that the chemical stability of the reaction environment is poor, the risk that the optical device material is corroded is caused, and the complete disassembly of the device is not facilitated.
In some embodiments, the C1-C7 linear alkane is selected from at least one of methane, ethane, propane, butane, pentane, hexane, n-heptane. The chain alkane selected from C1-C7 is added to ensure that the properties of the alkane material are relatively stable, and if the number of C atoms of the alkane is more, the number of connected branched chains is more, the stability of the alkane can be influenced, and the stability of the environment in the reaction process is further influenced.
In some embodiments, the linear alkane is selected from linear alkanes containing halogen substituents. Further, the alkane is selected from at least one of chloroalkane, bromoalkane and iodoalkane. The alkane containing the halogen substituent can perform substitution reaction with the optical cement due to the halogen substituent contained in the halogenated alkane, can promote the dissolution of the optical cement, can provide a stable reaction environment for the reaction, and can further improve the disassembly efficiency. Further, the alkane is selected from C1-C7 chain alkanes containing halogen substituent.
Specifically, the solvent composition comprises, by taking the total mass of the solvent composition as 100%, 20-30% of a ketone solvent and 35-45% of an ester solvent by weight on the basis of 35-45% of C1-C7 chain alkane by weight, wherein the ketone solvent and the ester solvent can act synergistically to dissolve the optical cement with strong degreasing capability and enhance the dissolving capability of the solvent composition, and the ultrathin optical cement can be effectively dissolved under the reaction environment with strong stability provided by the C1-C7 chain alkane, so that the optical cement adhesiveness is weakened to disappear, the device is separated, the optical device is not corroded, and the surface roughness is not changed, the solvent composition can effectively remove the optical cement layer of the ultrathin flexible optical device, and the disassembly without corrosiveness can not cause the generation of the joint surface of the optical device, and the obtained flexible optical device is ensured not to deform after passing through, thereby facilitating the optical device containing the ultrathin OCA optical cement layer to be subjected to repeated use and disassembly.
In some embodiments, the solvent composition has a mass ratio of the ketone solvent to the ester solvent of 1: (1.5-2), the mass ratio of the ketone solvent to the ester solvent is controlled, the effective dissolving treatment of the ultrathin optical cement can be ensured, the dissolving capacity is improved, the device can be completely and cleanly disassembled, the optical device is guaranteed not to be corroded, the roughness of the surface is enabled to be unchanged, the optical cement layer of the ultrathin flexible optical device can be effectively removed through the solvent composition, the corrosivity is guaranteed not to exist, the optical device cannot be damaged, and the reuse of the optical device is facilitated.
In some embodiments, the ketone solvent is selected from at least one of acetone, butanone, cyclohexanone. In the specific embodiment of the invention, the ketone solvent is selected from cyclohexanone, which is saturated cyclic ketone with carbonyl carbon atoms included in a six-membered ring, has high solubility and high stability, and can better separate an optical device.
In some embodiments, the ester solvent is selected from at least one of ethyl acetate, butyl acetate, amyl acetate. In a particular embodiment of the invention, the ester solvent is selected from ethyl acetate.
In the specific embodiment of the invention, the solvent composition comprises the following components in percentage by weight based on 100% of the total mass of the solvent composition:
45% of n-heptane;
20% of cyclohexanone;
and 35% of ethyl acetate.
Selecting a solvent composition obtained from 45 wt% of n-heptane, 20 wt% of cyclohexanone and 35 wt% of ethyl acetate to act, wherein the n-heptane can provide a reaction environment with stable chemical properties to ensure that an optical device is not corroded; secondly, cyclohexanone and ethyl acetate synergistic effect dissolve ultra-thin optical cement fast effectively, make optical cement adhesiveness weaken to disappearing, make OLED and support part fast, can not produce the corruption to OLED simultaneously, guarantee that OLED surface roughness does not change, the optics glue film of ultra-thin flexible optical device can effectively be got rid of to this solvent composition, and guarantee not have the corrosivity, can not lead to optical device's laminating surface to produce the mar, and guarantee that the flexible optical device who obtains can not warp the warpage after disassembling, be favorable to dismantling and reuse the optical device that contains ultra-thin OCA optics glue film.
Correspondingly, the preparation method of the solvent composition provided by the application adopts a conventional method, and the alkane, the ketone solvent and the ester solvent can be uniformly mixed.
A second aspect of the present application provides a method of disassembling a flexible optical device, comprising the steps of:
s01, providing a flexible optical device, bending the flexible optical device to enable a substrate support of the flexible optical device to be separated to form cracks and expose an OCA optical adhesive layer;
s02, dropwise adding the solvent composition for disassembling the flexible optical device into the crack to dissolve the OCA optical adhesive layer, and completing disassembling the flexible optical device.
According to the method for disassembling the flexible optical device, the support is firstly separated to form the crack with an angle, the solvent composition for disassembling the flexible optical device is dripped into the crack, the solvent composition is fully contacted with the optical adhesive layer, the solvent composition is used for effectively dissolving the optical adhesive, the adhesiveness of the optical adhesive is weakened to disappear, the device is separated, and the disassembly of the flexible optical device is completed.
In step S01, a flexible optical device is provided. In some embodiments, as shown in fig. 1, the flexible optical device comprises a separable substrate holder 300, and the OCA optical cement layer 200 and the flexible OLED layer 100 are sequentially stacked on the surface of the substrate holder 300. Further, the solvent composition provided by the application can act on an ultrathin flexible optical device, wherein when the thickness of the OCA optical cement is 1-30 micrometers, the treatment effect of the solvent composition is optimal, the OCA optical cement can be completely dissolved, and the device is guaranteed to be disassembled.
Further, as shown in fig. 2, the flexible optical device is bent, so that the substrate holder 300 of the flexible optical device is separated to form the crack 400 and expose the OCA optical adhesive layer 200, and the formation of the crack 400 facilitates the solvent composition to directly act on the OCA optical adhesive layer 200, thereby facilitating the dissolution treatment of the optical adhesive.
In some embodiments, the crack 400 forms an acute angle, and the acute angle is 15-30 degrees, so that the crack with the acute angle is controlled to be formed, and on one hand, the bracket cannot be directly broken and can be recycled; meanwhile, the OLED layer is protected and is bent within a reasonable bending range, and the device cannot be damaged; on the other hand, the method provides convenience for reaction, enables the solvent composition to directly act with the OCA optical adhesive layer, and improves the efficiency.
In the embodiment of the present invention, both ends of the substrate holder 300 of the flexible optical device are fixed by the fastening means, respectively, and the substrate holder is bent by an external force to form a crack having an acute angle.
In step S02, the solvent composition for disassembling the flexible optical device is dropped into the crack to dissolve the OCA optical adhesive layer, thereby completing the disassembling of the flexible optical device.
In some embodiments, the solvent composition is added dropwise in an amount of 0.5 to 1.5 mL/. Mu.m 3 . Because the solvent composition has a better disassembling effect on the ultrathin flexible optical device, the dripping amount of the solvent composition is controlled according to the volume of the OCA optical adhesive layer, the excellent dissolving effect can be ensured, the optical adhesive can be rapidly dissolved and treated, the optical adhesive property is weakened to disappear, the OLED and the support are rapidly separated, meanwhile, the corrosion to the OLED is avoided, the surface roughness of the OLED is ensured to be unchanged, the optical adhesive layer of the ultrathin flexible optical device can be effectively removed by the solvent composition, the corrosion is avoided, the optical device is not damaged, and the reuse of the optical device is facilitated. If the dropping amount is too small, the disassembly effect is poor and residues exist; if the amount of the compound to be added is too large, the compound will cause micro-corrosion of the device, and the reuse of the material will be adversely affected.
In some implementations, in the step of dropping the solvent composition for disassembling the flexible optical device into the crack to dissolve the OCA optical cement layer, the dropping is performed using any one of a dropper, a syringe, and an automatic spray device.
In some embodiments, the solvent composition for disassembling the flexible optical device is dropped into the crack to perform the dissolution treatment on the OCA optical glue layer, and the dissolution treatment time is 0.5 to 2 hours. The specific dissolving time is further determined according to the volume size of the optical cement.
The following description will be given with reference to specific examples.
Example 1
Solvent composition for disassembling flexible optical device and application
Solvent composition for disassembling flexible optical device
The solvent composition comprises the following components in percentage by weight based on 100 percent of the total mass of the solvent composition:
45% of n-heptane;
20% of cyclohexanone;
and 35% of ethyl acetate.
Method for disassembling flexible optical device
The method comprises the following steps:
providing a flexible optical device, wherein the flexible optical device is shown in fig. 1, the flexible optical device comprises a separable substrate support 300, an OCA optical adhesive layer 200 and a flexible OLED layer 100 which are sequentially stacked on the surface of the substrate support 300, and the thickness of the OCA optical adhesive layer is 30 micrometers;
bending the flexible optical device to enable the substrate support of the flexible optical device to be separated to form cracks and expose the OCA optical adhesive layer, wherein the cracks form an acute angle which is 15 degrees;
dropwise adding the solvent composition for disassembling the flexible optical device prepared in the example 1 into the crack to dissolve the OCA optical adhesive layer, wherein the dropwise adding amount is 1.5 mL/mum 3 And the time of the dissolution treatment is 2 hours, and the flexible optical device is disassembled.
Example 2
Solvent composition for disassembling flexible optical device and application
Solvent composition for disassembling flexible optical device
The solvent composition comprises the following components in percentage by weight based on 100 percent of the total mass of the solvent composition:
43% of hexane;
25% of butanone;
32% of butyl acetate.
Method for disassembling flexible optical device
The method comprises the following steps:
providing a flexible optical device, wherein the flexible optical device is shown in fig. 1, the flexible optical device comprises a separable substrate support 300, an OCA optical adhesive layer 200 and a flexible OLED layer 100 which are sequentially stacked on the surface of the substrate support 300, and the thickness of the OCA optical adhesive layer is 25 micrometers;
bending the flexible optical device to enable the substrate support of the flexible optical device to be separated to form cracks and expose the OCA optical adhesive layer, wherein the cracks form an acute angle which is 17 degrees;
dropwise adding the solvent composition for disassembling the flexible optical device prepared in the example 2 into the crack to dissolve the OCA optical adhesive layer, wherein the dropwise adding amount is 1.2 mL/mum 3 And the time of the dissolution treatment is 1.8 hours, and the flexible optical device is disassembled.
Example 3
Solvent composition for disassembling flexible optical device and application
Solvent composition for disassembling flexible optical device
The solvent composition comprises the following components in percentage by weight based on 100 percent of the total mass of the solvent composition:
40% of pentane;
30% of acetone;
30% of amyl acetate.
Method for disassembling flexible optical device
The method comprises the following steps:
providing a flexible optical device, wherein the flexible optical device is shown in fig. 1, the flexible optical device comprises a separable substrate support 300, an OCA optical adhesive layer 200 and a flexible OLED layer 100 which are sequentially stacked on the surface of the substrate support 300, and the thickness of the OCA optical adhesive layer is 20 micrometers;
bending the flexible optical device to separate a substrate support of the flexible optical device to form a crack and expose the OCA optical adhesive layer, wherein the crack forms an acute angle which is 15 degrees;
dropwise adding the solvent composition for disassembling the flexible optical device prepared in the example 3 into the crack to dissolve the OCA optical adhesive layer, wherein the dropwise adding amount is 1.0 mL/mum 3 And the time of the dissolution treatment is 1.5 hours, and the flexible optical device is disassembled.
Example 4
Solvent composition for disassembling flexible optical device and application
Solvent composition for disassembling flexible optical device
The solvent composition comprises the following components in percentage by weight based on 100 percent of the total mass of the solvent composition:
35% of chloro-n-heptane;
30% of cyclohexanone;
and 45% of ethyl acetate.
Method for disassembling flexible optical device
The method comprises the following steps:
providing a flexible optical device, wherein the flexible optical device is shown in fig. 1, the flexible optical device comprises a separable substrate support 300, an OCA optical adhesive layer 200 and a flexible OLED layer 100 which are sequentially stacked on the surface of the substrate support 300, and the thickness of the OCA optical adhesive layer is 15 micrometers;
bending the flexible optical device to enable the substrate support of the flexible optical device to be separated to form cracks and expose the OCA optical adhesive layer, wherein the cracks form an acute angle which is 15 degrees;
dropwise adding the solvent composition for disassembling the flexible optical device prepared in the example 4 into the crack to dissolve the OCA optical adhesive layer, wherein the dropwise adding amount is 0.8 mL/mum 3 And the time of the dissolution treatment is 1 hour, and the flexible optical device is disassembled.
Example 5
Solvent composition for disassembling flexible optical device and application
Solvent composition for disassembling flexible optical device
The solvent composition comprises the following components in percentage by weight based on 100 percent of the total mass of the solvent composition:
45% of chloropentane;
20% of cyclohexanone;
and 35% of ethyl acetate.
Method for disassembling flexible optical device
The method comprises the following steps:
providing a flexible optical device, wherein the flexible optical device is shown in fig. 1, the flexible optical device comprises a separable substrate support 300, an OCA optical adhesive layer 200 and a flexible OLED layer 100 which are sequentially stacked on the surface of the substrate support 300, and the thickness of the OCA optical adhesive layer is 10 micrometers;
bending the flexible optical device to enable the substrate support of the flexible optical device to be separated to form cracks and expose the OCA optical adhesive layer, wherein the cracks form an acute angle which is 15 degrees;
dropwise adding the solvent composition for disassembling the flexible optical device prepared in the example 5 into the crack to dissolve the OCA optical adhesive layer, wherein the dropwise adding amount is 0.5 mL/mum 3 And the time of the dissolving treatment is 0.5 hour, and the flexible optical device is disassembled.
Comparative example 1
Method for disassembling flexible optical device
The method comprises the following steps:
providing a flexible optical device, wherein the flexible optical device is shown in fig. 1, the flexible optical device comprises a separable substrate support 300, an OCA optical adhesive layer 200 and a flexible OLED layer 100 which are sequentially stacked on the surface of the substrate support 300, and the thickness of the OCA optical adhesive layer is 10 micrometers;
and directly carrying out stripping treatment by adopting a laser cutting method.
Comparative example 2
Method for disassembling flexible optical device
The method comprises the following steps:
providing a flexible optical device, wherein the flexible optical device is shown in fig. 1, the flexible optical device comprises a separable substrate support 300, an OCA optical adhesive layer 200 and a flexible OLED layer 100 which are sequentially stacked on the surface of the substrate support 300, and the thickness of the OCA optical adhesive layer is 30 micrometers;
and directly carrying out stripping treatment by adopting a wire cutting method.
Performance testing and result analysis:
the residual of the optical cement and the roughness of the material surface of the disassembled flexible optical devices of examples 1 to 5 and comparative examples 1 to 2 were analyzed, and the results are shown below.
As shown in table 1 below, it can be seen from table 1 below that the optical cement on the surface of the flexible optical device after the treatment of examples 1 to 5 is substantially residue-free, while the material surface of comparative examples 1 to 2 has partial residue; the roughness Ra of the surface of the flexible optical device is further measured, and the roughness of the surface of the flexible optical device treated in the embodiments 1-5 is less than 0.5nm; while the roughness of the surface of the material obtained in comparative documents 1 to 2 is 1 to 1.5nm.
Therefore, the solvent composition provided by the application can dissolve the ultrathin optical cement, and complete the separation of the device. The solvent composition can effectively remove the optical adhesive layer of the ultrathin flexible optical device, ensures that the surface is not corroded, does not have corrosion, cannot cause scratches on the bonding surface of the optical device, ensures that the obtained flexible optical device cannot deform and warp after being disassembled, and is favorable for repeatedly using the optical device containing the ultrathin OCA optical adhesive layer.
TABLE 1
The present application is intended to cover various modifications, equivalent arrangements, and adaptations of the present application without departing from the spirit and scope of the present application.
Claims (10)
1. A solvent composition for disassembling a flexible optical device is characterized by comprising the following components in percentage by weight based on 100% of the total mass of the solvent composition:
35 to 45 percent of C1 to C7 chain alkane;
20 to 30 percent of ketone solvent;
35 to 45 percent of ester solvent.
2. The solvent composition for disassembling flexible optical devices according to claim 1, wherein said linear alkane is selected from at least one of methane, ethane, propane, butane, pentane, hexane, and n-heptane.
3. The solvent composition for disassembling flexible optical devices according to claim 2, wherein said alkane is selected from alkanes containing halogen substituents.
4. A solvent composition for disassembling flexible optical devices according to any one of claims 1 to 3, wherein said ketone solvent is selected from at least one of acetone, butanone and cyclohexanone.
5. A solvent composition for disassembling a flexible optical device according to any one of claims 1 to 3, wherein said ester solvent is at least one selected from the group consisting of ethyl acetate, butyl acetate and amyl acetate.
6. A solvent composition for disassembling a flexible optical device according to any one of claims 1 to 3, comprising the following components in the following weight percentage, based on 100% of the total mass of the solvent composition:
45% of n-heptane;
20% of cyclohexanone;
and 35% of ethyl acetate.
7. A method of disassembling a flexible optical device, comprising the steps of:
providing a flexible optical device, bending the flexible optical device to separate a substrate support of the flexible optical device to form a crack and expose the OCA optical adhesive layer;
dropping the solvent composition for disassembling the flexible optical device according to any one of claims 1 to 6 into the crack to dissolve the OCA optical adhesive layer, thereby completing the disassembling of the flexible optical device.
8. A method of disassembling a flexible optical device according to claim 7, wherein the thickness of the OCA optical cement is 1-30 μm, and/or,
the dropping amount of the solvent composition is 0.5-1.5 mL/mu m 3 。
9. A method of disassembling a flexible optical device according to claim 7 wherein the slit forms an acute angle and the acute angle is 15 ° to 30 °.
10. A method of disassembling a flexible optical device according to claim 7, wherein the time of the dissolution treatment is 0.5 to 2 hours.
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