A POSS modified acrylic adhesive, a preparation method thereof and application thereof on a blue film of an electric cell

Abstract

The application discloses a POSS modified acrylic adhesive, a preparation method thereof and application of the POSS modified acrylic adhesive to a blue film of an electric core, and the POSS modified acrylic adhesive comprises the following components in percentage by mass: 65-85 parts of soft monomers, 5-15 parts of hard monomers, 3-8 parts of crosslinking monomers, 0.5-1.5 parts of functionalized POSS, 0.1-0.3 parts of a chain transfer agent, 0.2-0.4 parts of an initiator and 55-80 parts of an organic solvent; the functionalized POSS is copolymerized with the monomers to form the POSS modified acrylic adhesive. The functionalized POSS is chemically crosslinked with the monomers to form the POSS grafted and / or blocked acrylic adhesive, the performance of the adhesive layer formed by the adhesive is improved without affecting the performance of the adhesive, the performance of the adhesive layer formed by the adhesive is improved, the adhesive can be used for preparing a blue film adhesive tape of an electric core, the adhesive tape is attached to a square aluminum shell electric core, the electric core does not warp for a long time, the adhesive tape changes little in peeling force after 1000h of aging treatment in a high-temperature and high-humidity environment, no adhesive residue is generated after peeling, and the performance requirement of a new energy electric core blue film is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of adhesives and cell blue film, and particularly relates to a POSS modified acrylic adhesive, a preparation method thereof and application of the POSS modified acrylic adhesive to a cell blue film. BACKGROUND

[0002] Currently, with the rapid popularization of new energy vehicles and the continuous expansion of the power battery industry, the production standards and quality, safety control of lithium batteries are becoming increasingly strict and mature. As an important process in the production process of lithium battery cells, the blue film plays a protective and insulating role for the cells, and the performance requirements for the blue film are becoming increasingly demanding. Currently, in addition to meeting the basic requirements of anti-reverse lifting performance, peel strength, initial adhesion, and holding adhesion, the performance of aging resistance in a high-temperature and high-humidity environment is also proposed, and the adhesion (mainly referring to peel strength) after aging is still within the initial required specifications.

[0003] Under high-temperature and high-humidity conditions, the post-curing enhancement of the adhesive and the weakening of the adhesive interface due to high humidity exist at the same time, and the enhancement is usually much greater than the weakening. To simulate the working environment of the cell, the current aging test under high temperature and high humidity is used to detect the change of the peel strength of the cell blue film. After the existing cell blue film is subjected to the aging test under high temperature and high humidity, the peel strength is usually greatly improved, even by more than 100%, and is accompanied by problems such as residual glue. A small part of the blue film products will have a peel strength decay after aging, which does not meet the requirement that the peel strength after aging is still within the initial required specifications. Therefore, it is necessary to develop an acrylic adhesive for cell blue film that is resistant to wet heat aging. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a POSS modified acrylic adhesive and a preparation method thereof and application of the POSS modified acrylic adhesive to a cell blue film. The functionalized POSS and monomers are chemically cross-linked and copolymerized to form a POSS grafted and / or block acrylic adhesive, which effectively improves the wet heat aging resistance and corrosion resistance of the adhesive layer formed by the adhesive without affecting the performance of the adhesive. The adhesive can be used for a long time without lifting, the peel strength changes little in a high-temperature and high-humidity environment, and no residual glue is generated, which meets the performance requirements of the new energy cell blue film.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] The first aspect of the present application provides a POSS modified acrylic adhesive, comprising the following components by mass percentage: 65-85 parts of soft monomer, 5-15 parts of hard monomer, 3-8 parts of crosslinking monomer, 0.5-1.5 parts of functionalized POSS, 0.1-0.3 parts of chain transfer agent, 0.2-0.4 parts of initiator, 55-80 parts of organic solvent; the functionalized POSS and the monomer are copolymerized by chemical crosslinking to form the POSS modified acrylic adhesive; the functionalized POSS is a cage-shaped octahedral oligomeric silsesquioxane.

[0007] Further, the functionalized POSS is a cage-shaped octahedral oligomeric silsesquioxane containing one or more groups of epoxy, vinyl, and amino.

[0008] The cage-shaped POSS has an organic-inorganic hybrid core-shell structure, the internal inorganic framework as the core is a hexahedral cage structure composed of Si-O-Si or Si-O bonds, each corner contains one Si atom, and each face is composed of a Si-O-Si eight-membered ring, having strong structural symmetry, and the outside can have various organic groups extending to space on each Si atom, so the typical molecular formula can be depicted as (RSiO 1.5 )n, n is usually 8, 10, 12, etc., R is a group connected to the eight corner Si atoms, and R can be H and active or inactive groups such as epoxy, amino, carboxyl, alkenyl, and alkyl, hydroxyl, aryl, etc.

[0009] The present application uses functionalized POSS, such as vinyl POSS, epoxy POSS, amino POSS, etc. to form block or graft copolymers by chemical crosslinking through the reactive carbon-carbon double bond, epoxy group, or amino group with acrylic monomers, and introduces POSS through chemical bonds, which can improve the bonding force of POSS with polymers and achieve uniform dispersion on the molecular layer; after introducing the POSS group into the polymer, the core is an inorganic cage structure composed of Si-O-Si structure, has large bond energy, large steric hindrance between molecules, high symmetry, and thermal stability, and can improve the high-temperature aging resistance of the acrylic adhesive. In addition, the shell is composed of reactive or non-reactive organic functional groups, which endows it with high organic solubility, decomposability, and reactivity. In addition, POSS is uniformly dispersed in the acrylic adhesive system. The Si-O-Si bond in POSS has a hydrophobic effect, which greatly reduces the weakening effect of water vapor on the bonding interface.

[0010] Further, when the functionalized POSS is vinyl POSS, it can react with acrylic monomers to form the following structure:

[0011] R and R' are alkyl groups.

[0012] Further, when the functionalized POSS is epoxy POSS, the reaction with acrylic monomers can form the following structure:

[0013] R and R' are alkyl groups.

[0014] Further, when the functionalized POSS is amino POSS, the reaction with acrylic monomers can form the following structure:

[0015]

[0016] R and R' are alkyl groups.

[0017] Further, the functionalized POSS is selected from one or more of epoxy cyclohexyl POSS, vinyl POSS, tetramethylammonium POSS.

[0018] Further, the soft monomer is selected from one or more of isooctyl acrylate, ethyl acrylate, n-butyl acrylate, isobutyl acrylate, vinyl neodecanoate, lauryl acrylate.

[0019] Further, the soft monomer is selected from one or more of isooctyl acrylate, ethyl acrylate, n-butyl acrylate, isobutyl acrylate, vinyl neodecanoate, lauryl acrylate.

[0020] Further, the crosslinking monomer is selected from one or more of hydroxyethyl acrylate, hydroxypropyl acrylate, acrylic acid, methacrylic acid.

[0021] Further, the initiator can be azobisisobutyronitrile or benzoyl peroxide.

[0022] Further, the chain transfer agent includes thioglycerol.

[0023] Further, the solvent is preferably ethyl acetate and / or toluene, but is not limited to the listed solvents.

[0024] Further, the solid content of the POSS-modified acrylic adhesive is preferably 50% to 60%, more preferably 53% to 57%.

[0025] Further, the rotational viscosity of the POSS-modified acrylic adhesive is 15000 to 25000 cps, more preferably 18000 to 23000 cps.

[0026] Further, the glass transition temperature of the POSS-modified acrylic adhesive is preferably -40 to -25℃, more preferably -35 to -30℃.

[0027] The second aspect of the present application provides a preparation method of the POSS-modified acrylic adhesive of the first aspect, comprising the following steps:

[0028] (1) Under inert atmosphere, the solvent is preheated at 70-75℃ for 30-40 min according to the formula amount; the soft monomer, the hard monomer, the crosslinking monomer, the chain transfer agent and 1 / 4 of the total initiator amount of initiator are mixed to obtain a first mixed solution;

[0029] (2) A part of the first mixed solution in step (1) is added to the preheated solvent in step (1), and reacted at 78-85℃ for 0.5-1h, then the remaining first mixed solution is added dropwise into the solvent, and reacted for 0.5-2h;

[0030] (3) 1 / 4 of the total initiator amount of initiator is added to the reaction solution after step (2), and reacted at 80-85℃ for 0.5-2h; then the formula amount of functional POSS and the remaining initiator are added, and reacted at 80-85℃ for 1.5-2h; after the reaction is completed, the temperature is lowered, and the product is discharged.

[0031] Further, the initiator is preferably azobisisobutyronitrile or benzoyl peroxide.

[0032] Further, in step (2), the remaining first mixed solution accounts for 50%-75% of the total volume of the first mixed solution, and more preferably 75%.

[0033] Further, in step (3), after the reaction is completed, the temperature is lowered to below 50℃, and then the product is discharged.

[0034] The third aspect of the present application provides an electric core blue film adhesive tape, comprising a release film layer, a first acrylic adhesive layer, a first substrate layer, a second acrylic adhesive layer and a second substrate layer which are sequentially stacked, and the preparation raw materials of the first acrylic adhesive layer and the second acrylic adhesive layer comprise the POSS modified acrylic adhesive of any one of claims 1-5.

[0035] Further, the preparation raw materials of the first acrylic adhesive layer and the second acrylic adhesive layer further comprise a curing agent, a blue film color paste and an organic solvent; the mass ratio of the POSS modified acrylic adhesive, the curing agent, the blue film color paste and the organic solvent is 100:0.5-0.8:4-8:50-80.

[0036] Further, the mass ratio of the POSS modified acrylic adhesive, the curing agent, the blue film color paste and the organic solvent is more preferably 100:0.6-0.7:5-6:60-70.

[0037] Further, the curing agent is preferably an isocyanate curing agent.

[0038] Further, the first substrate layer and the second substrate layer can be PET substrates.

[0039] Compared with the prior art, the present application has the following beneficial effects:

[0040] 1. The present application adopts functionalized POSS containing reactive groups such as epoxy, vinyl, amino, etc., to form block and / or graft copolymers by chemical crosslinking of the reactive groups with acrylic monomers, so that POSS can be closely combined with polymers through chemical bonds, and at the same time, uniform dispersion of POSS at the molecular level of the adhesive is achieved. The introduction of POSS groups with high symmetry and thermal stability improves the high-temperature aging resistance of the acrylic adhesive, and the introduction of hydrophobic groups Si-O-Si greatly reduces the weakening effect of water vapor on the bonding interface, thereby effectively improving the moisture and heat aging resistance of the copolymer. The adhesive layer formed by the POSS modified acrylic adhesive of the present application is stable in peel strength before and after high temperature and high humidity aging, and no residue is left after peeling.

[0041] 2. The present application adopts the above-mentioned POSS modified acrylic adhesive as raw materials for preparing the adhesive layer of the blue film adhesive tape for battery cells, mixed with curing agent, color paste and solvent, to prepare the blue film adhesive tape for battery cells, which can be attached to the square aluminum shell battery cell to maintain the edge corner for at least 72 hours without warping. After aging at 85℃, 85%RH for 1000 hours, the peel strength changes by less than 30%, and no residue is left, showing excellent moisture and heat aging resistance, and can be applied in the field of blue film for new energy battery cells. Embodiment

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing specific embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] The present application will be further described in conjunction with specific examples to enable those skilled in the art to better understand and implement the present application, but the examples are not intended to limit the present application.

[0044] The raw materials used in the following examples and comparative examples are as follows:

[0045] Isooctyl acrylate, n-butyl acrylate, vinyl neodecanoate, methyl acrylate, methyl methacrylate, vinyl neononanoate, vinyl acetate, hydroxyethyl acrylate, hydroxypropyl acrylate, acrylic acid, and methacrylic acid are purchased from BDF Industry Co., Ltd. and are of analytical purity.

[0046] Epoxy cyclohexyl POSS, vinyl POSS (OV-POSS), tetramethyl aminated POSS, and isooctyl ester POSS are purchased from Forsman.

[0047] The initiator is azobisisobutyronitrile, and the chain transfer agent is thio-glycerol, which is purchased from Aladdin Reagent (Shanghai) Co., Ltd. and is of analytical purity.

[0048] The organic solvent is ethyl acetate or toluene, which is purchased from Sigma-Aldrich (Shanghai) Trading Co., Ltd. and is of analytical purity.

[0049] The curing agent is purchased from Covestro (China) Co., Ltd. and is of Desmodur L-75 type.

[0050] The color paste is purchased from Shanghai Baiyan Industry Co., Ltd. and is of 631 phthalo blue type.

[0051] Example 1

[0052] This example relates to the preparation of a POSS-modified acrylic adhesive and a blue film for a battery cell, the POSS-modified acrylic adhesive comprising the following components in parts by mass: 25 parts of isooctyl acrylate, 35 parts of n-butyl acrylate, 10 parts of vinyl neodecanoate, 5 parts of methyl acrylate, 5 parts of vinyl acetate, 5 parts of hydroxyethyl acrylate, 1 part of vinyl POSS (OV-POSS), 0.2 parts of thio-glycerol, 0.35 parts of azobisisobutyronitrile, and 65 parts of ethyl acetate.

[0053] The preparation of the POSS-modified acrylic adhesive comprises the following steps:

[0054] (1) The solvent is added to a four-necked flask in the amount as specified in the formula, preheated at 70-75°C for 30-40 min in a N2 atmosphere, and the soft monomer, hard monomer, crosslinking monomer, chain transfer agent, and initiator are weighed in the amounts as specified in the formula, respectively, and all the monomers, all the chain transfer agent, and 1 / 4 of the amount of initiator are mixed to form a mixed solution 1;

[0055] (2) 1 / 4 of the mixed solution 1 is added to the flask, and the reaction is carried out at 78-85°C for 30 min, then the remaining 3 / 4 of the mixed solution 1 is added dropwise within 1.5-2 h, the reaction temperature is kept at 78-85°C, and after the dropwise addition is completed, the reaction is continued for 1 h;

[0056] (3) 1 / 4 of the total amount of initiator is added to the flask again, the reaction temperature is kept at 80-85°C, and the reaction is carried out for 1 h; the vinyl POSS and the remaining initiator are added in the amounts as specified in the formula, the reaction temperature is kept at 80-85°C, and the reaction is carried out for 1.5-2 h; after the reaction is completed, the temperature is lowered to below 50°C, and the product is discharged for use.

[0057] The preparation of the blue film for a battery cell comprises the following steps:

[0058] The POSS modified acrylic adhesive prepared above, curing agent, blue film color paste, ethyl acetate were prepared according to the mass ratio of 100:0.65:5:60, and after stirring and mixing uniformly, a doctor blade was used to coat on PET, and then baked at 80°C for 5 min, and then cured at 45-55°C for 72 h, to finally prepare a double-layer battery blue film adhesive tape of release film / adhesive / PET / adhesive / PET. The battery blue film adhesive tape comprises a release film layer (thickness of 30 μm), a first adhesive layer (thickness of 30 μm), a first PET substrate layer (thickness of 25 μm), a second adhesive layer (thickness of 19 μm) and a second PET substrate layer (thickness of 36 μm) which are sequentially stacked.

[0059] Examples 2-7

[0060] Examples 2-7 relate to a kind of POSS modified acrylic adhesive and the preparation of battery blue film, and the difference between example 1 is only in the formula of POSS modified acrylic adhesive, the formula of each POSS modified acrylic adhesive in example 1-7 is shown in table 1 as follows:

[0061] Table 1 formula of each POSS modified acrylic adhesive in example 1-7

[0062]

[0063] Comparative examples 1-7

[0064] Comparative examples 1-7 relate to a kind of acrylic adhesive and the preparation of battery blue film, and the difference between example 1 is only in the formula of acrylic adhesive, the formula of each acrylic adhesive in comparative examples 1-7 is shown in table 2 as follows:

[0065] Table 2 formula of each acrylic adhesive in comparative examples 1-7

[0066]

[0067]

[0068] Comparative examples 8, 9

[0069] Comparative examples 8, 9 relate to a kind of acrylic adhesive and the preparation of battery blue film, and the difference between example 1 is only in the formula of battery blue film adhesive layer, the formula of battery blue film adhesive layer in example 1 and comparative examples 8, 9 is shown in table 3 as follows:

[0070] Table 3 formula of battery blue film adhesive layer

[0071] Item Example 1 Comparative Example 8 Comparative Example 9 Acrylic pressure sensitive adhesive 100 100 100 Curing agent 0.65 0.3 1 Color paste 5 5 5 Ethyl acetate 60 60 60

[0072] Performance test

[0073] The performance of the blue film adhesive tape prepared from Examples 1-7 and Comparative Examples 1-9 was tested, and the relevant performance test methods are as follows:

[0074] 180° peeling force test: determined according to GB / T 2792-1998 standard (SUS plate, peeling speed of 300 mm / min);

[0075] Initial tack test: determined according to GB / T 4852-2002 standard, with a requirement that the initial tack rolling ball is >12#;

[0076] Holding tack test: determined according to GB / T 4851-1998 standard (80°C, 24h), with a requirement that the displacement is <0.20 mm;

[0077] Adhesive tape thickness (excluding release film) test: after drying, the adhesive tape thickness is (110±2) μm;

[0078] Anti-reverse curling performance test: the blue film adhesive tape was attached to the four sides of a square aluminum shell battery, with a 4 mm wide edge at the corner, and the tape was checked every 24h to see if the edge at the corner was curled, and the time when the edge at the corner of the tape was curled was recorded;

[0079] Moisture and heat aging resistance test: the blue film adhesive tape was attached to a smooth Al plate, and placed in an environment of 85°C and 85% RH for 1000h, and then the 180° peeling force was tested, with a requirement that the peeling force change rate before and after the test is <30%, and no residue is present, and at least 3 samples were tested for each formula.

[0080] The test results are shown in Table 4 below:

[0081] Table 4 is the performance parameters of the blue film adhesive tape prepared from the battery of each example and comparative example

[0082]

[0083] As can be seen from Table 4, in Examples 1-7, the 180° peeling force is 13-14 N / 25 mm, the peeling force is moderate, and can be applied to most blue film battery bonding processes, the initial tack, holding tack, and anti-reverse curling performance are qualified, after aging at 85°C and 85% RH for 1000h, no residue is present, and the peeling force change rate is <30%, among which, in Examples 1-6, the peeling force change rate is smaller, the moisture and heat aging resistance is excellent, and the comprehensive performance meets the current performance requirements for blue film batteries.

[0084] Compared with the above examples, the comparative example 1 does not add functional POSS, the adhesive composition belongs to pure acrylic resin, and the wet heat resistance is poor. After aging for 1000h under the condition of 85℃, 85%RH, residual glue appears, and the peel strength increases too much, about 68%, which is unqualified. While the amount of functional POSS added in comparative examples 2-4 is too much, after aging under the same conditions, no residual glue appears, and the peel strength change rate is less than 20%, the wet heat aging resistance is excellent, which shows that the introduction of POSS can greatly improve the wet heat aging resistance. At the same time, the anti-curling property is unqualified, and the peel strength decreases at room temperature, because the POSS and acrylic resin can form a network structure, the crosslinking density increases, the adhesion is reduced, and too much POSS may cause self-polymerization, forming local crosslinking, affecting the flexibility of the main acrylic resin, and further leading to the decrease of the anti-curling property.

[0085] In comparative examples 5 and 6, the proportion of crosslinking monomers is changed, by introducing polar groups -OH, -COOH, etc., hydrogen bonds are formed with the -OH on the metal surface, and crosslinking can be formed with the curing agent, which can improve the bonding between the adhesive and the surface of the adherend. In comparative example 5, the proportion of crosslinking monomers is low, resulting in low crosslinking density and poor holding adhesion, and residual glue appears after high humidity and heat aging, which is unqualified. Similarly, in comparative example 6, the proportion of crosslinking monomers is too high, and the hydrogen bonding force between the -OH on the metal surface is too strong, so the holding adhesion and wet heat aging resistance are better. However, at the same time, the crosslinking degree also increases, resulting in poor initial adhesion, reduced flexibility, and poor anti-curling property.

[0086] In comparative example 7, alkylated POSS is used to modify the acrylic adhesive, which is an inert functional group. POSS is physically mixed into the acrylic resin, then crosslinked and combined through the curing agent, and the dispersibility is relatively poor, the utilization rate is low, and the cohesion is slightly reduced. Therefore, the holding adhesion is slightly poor, residual glue appears after aging, the adhesion changes little, and the peel strength change rate before and after aging is 40.15%, which is larger than that of the example, and the performance is unqualified.

[0087] Compared with the blue film of the battery cell prepared in example 1, the amount of curing agent is changed in comparative examples 8 and 9, which changes the crosslinking density of the system and affects the cohesion. In comparative example 8, the amount of curing agent used is small, the crosslinking density is low, and the cohesion is small, resulting in poor holding adhesion, residual glue after aging, and rapid increase of peel strength, which is unqualified. In comparative example 9, the amount of curing agent used is large, the isocyanate reacts completely with -OH and part of -COOH in the system, resulting in a hard adhesive film and a significant decrease in anti-curling property, which is unqualified.

[0088] The above embodiments are only the preferred examples for fully illustrating the present application, and the protection scope of the present application is not limited to this. Any equivalent substitutions or changes made by those skilled in the art based on the present application are within the protection scope of the present application. The protection scope of the present application is subject to the claims.

Claims

1. A POSS-modified acrylic adhesive, characterized by, The POSS modified acrylic adhesive comprises the following components by mass percentage: 65-85 parts of soft monomer, 5-15 parts of hard monomer, 3-8 parts of crosslinking monomer, 0.5-1.5 parts of functionalized POSS, 0.1-0.3 parts of chain transfer agent, 0.2-0.4 parts of initiator, 55-80 parts of organic solvent; the functionalized POSS and the monomer are copolymerized by chemical crosslinking to form the POSS modified acrylic adhesive; the functionalized POSS is cage-shaped octahedral oligomeric silsesquioxane; The functionalized POSS is cage-shaped octahedral oligomeric silsesquioxane containing one or more groups of epoxy group and vinyl group; the functionalized POSS is selected from one or more of epoxy cyclohexyl POSS and vinyl POSS; the epoxy cyclohexyl POSS is epoxy cyclohexyl-cage polysilsesquioxane; the vinyl POSS is octa-vinyl-cage polysilsesquioxane; The soft monomer is selected from one or more of isooctyl acrylate, ethyl acrylate, n-butyl acrylate, isobutyl acrylate, vinyl neodecanoate, and lauryl acrylate; The hard monomer is selected from one or more of methyl acrylate, methyl methacrylate, vinyl neononanoate, and vinyl acetate. The crosslinking monomer is selected from one or more of hydroxyethyl acrylate, hydroxypropyl acrylate, acrylic acid, and methacrylic acid.

2. The POSS-modified acrylic adhesive of claim 1, wherein, The POSS modified acrylic adhesive has a solid content of 50%-60%, a rotational viscosity of 15000-25000 cps, and a glass transition temperature of -40--25 ℃.

3. A method of preparing the POSS-modified acrylic adhesive of claim 1 or 2, characterized in that, The method comprises the following steps: (1) Under an inert atmosphere, the solvent is preheated at 70-75 ℃ for 30-40 min according to the formula amount; the soft monomer, the hard monomer, the crosslinking monomer, the chain transfer agent, and 1 / 4 of the total amount of the initiator are mixed to obtain a first mixed solution; (2) A part of the first mixed solution in step (1) is added to the preheated solvent in step (1), and reacted at 78-85 ℃ for 0.5-1 h; then the remaining first mixed solution is added dropwise to the solvent, and reacted for 0.5-2 h; (3) 1 / 4 of the total amount of the initiator is added to the reaction solution after step (2), and reacted at 80-85 ℃ for 0.5-2 h; then the formula amount of the functionalized POSS and the remaining initiator are added, and reacted at 80-85 ℃ for 1.5-2 h; after the reaction is completed, the temperature is lowered, and the product is discharged.

4. The production method according to claim 3, characterized by, The initiator is azobisisobutyronitrile or benzoyl peroxide.

5. The preparation method according to claim 3, characterized in that In step (2), the remaining first mixed solution accounts for 50%-75% of the total volume of the first mixed solution.

6. A battery cell blue film tape comprising a release film layer, a first acrylic adhesive layer, a first substrate layer, a second acrylic adhesive layer, and a second substrate layer which are sequentially stacked, characterized in that, The first acrylic adhesive layer and the second acrylic adhesive layer are prepared from the raw materials comprising the POSS modified acrylic adhesive of claim 1 or 2.

7. The cell blue film tape of claim 6, wherein, The raw materials for preparing the first acrylic adhesive layer and the second acrylic adhesive layer further comprise a curing agent, a blue film color paste, and an organic solvent; the mass ratio of the POSS modified acrylic adhesive, the curing agent, the blue film color paste, and the organic solvent is 100:0.5-0.8:4-8:50-80.

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