Antistatic adhesive film composition and adhesive film

Abstract

The invention relates to the technical field of protective films, and provides an antistatic adhesive film composition and an adhesive film. The antistatic adhesive film composition comprises 100 parts of acrylic resin, 1.5-3 parts of a curing agent, 0.5-2 parts of an antistatic agent and 2-4 parts of a plasticizer, wherein the acrylic resin comprises 5-15 wt% of a functional monomer based on 100 wt% of the total weight of the comonomer, and the functional monomer comprises at least one of ethoxylated trimethylolpropane triacrylate and ethyoxyl ethyoxyl ethyl acrylate. The antistatic adhesive film composition provided by the invention can effectively reduce the film tearing voltage, has higher stability under high-temperature and high-humidity conditions, and does not easily separate out adhesive layer components to pollute the surface of a pasted object.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of antistatic adhesive film, and particularly relates to an antistatic adhesive film composition and an adhesive film. BACKGROUND

[0002] With the rapid development of electronic products such as mobile phones, computers and tablets, the auxiliary materials related to such electronic products have also developed rapidly. In order to prevent the screen surface of such electronic products from being scratched, worn or contaminated during transportation, handling or use, a protective film is generally attached to the screen surface to play a protective role. The protective film generally adopts the structure of adhesive film and substrate combination, the adhesive film is pasted to the screen surface to play a protective role on the surface, and the protective film can be torn off when it is not needed.

[0003] The existing protective film has the following problems in actual application: on the one hand, after the protective film is subjected to high temperature and high humidity environment, the peeling force rises due to reasons such as climbing, which causes the tearing film voltage to be too large when the protective film is torn off, and the electronic product inductor is easily broken, thereby affecting the normal use of the touch screen of the electronic product; on the other hand, the adhesive film of the protective film generally uses inorganic antistatic agent to reduce the tearing film voltage, but the inorganic antistatic agent has poor compatibility with the organic high molecular adhesive component, especially under high temperature and high humidity conditions, the antistatic agent is easy to precipitate from the adhesive layer, which pollutes the touch screen surface and causes peeling residue.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] The present application aims to overcome the above-mentioned problems in the prior art, and provides an antistatic adhesive film composition. The adhesive film composed of the antistatic adhesive film composition provided by the present application can effectively reduce the tearing film voltage, and the adhesive film still has high stability under high temperature and high humidity conditions, the antistatic agent is not easy to precipitate, the adhesive film is easy to peel off, and there is no residue after peeling.

[0006] In order to achieve the above-mentioned purpose, the present application provides an antistatic adhesive film composition, which comprises the following components in parts by weight: 100 parts of an acrylic resin, 1.5-3 parts of a curing agent, 0.5-2 parts of an antistatic agent and 2-4 parts of a plasticizer; the acrylic resin, with a total weight of comonomers being 100 wt%, comprises 5-15 wt% of a functional monomer, and the functional monomer comprises at least one of ethoxylated trimethylolpropane triacrylate (ETPTA) and ethoxyethoxyethyl acrylate (EOEOEA).

[0007] The present application has the following beneficial effects by adopting the above technical solution: (1) The antistatic adhesive film composition provided by the present application can effectively reduce the tearing film voltage, and avoid electrostatically breaking the touch screen inductor when peeling off; (2) The antistatic adhesive film composition provided by the application has high stability in a high-temperature and high-humidity environment, low peel force rise, and easy peeling; (3) The antistatic agent in the antistatic adhesive film composition provided by the application does not precipitate, and there is no residual adhesive after peeling.

[0008] The endpoints of the ranges and any values disclosed herein are not limited to the precise values recited as the exact dimensions are not critical to the application. Any numerical value, however, can be expressed as a range to include any value between the upper and lower limits of that range, as well as fractions within the range. The endpoints of the ranges of values (as well as the values within the range) can be combined with values outside the ranges or with other ranges or endpoints to form new ranges or endpoints, unless the context clearly dictates otherwise. In the present disclosure, the use of "about" or "approximately" in connection with a value means that the value is within a reasonable range of the exact value, such as within 10% of the exact value, within 5% of the exact value, within 1% of the exact value, or within 0.1% of the exact value. DETAILED DESCRIPTION

[0009] The specific embodiments of the application will be described in detail below. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the application.

[0010] Unless otherwise defined, all scientific and technical terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0011] In the present application, "(meth)acrylic acid" refers to at least one of "methacrylic acid" and "acrylic acid".

[0012] The first aspect of the present application provides an antistatic adhesive film composition, comprising the following components by weight: 100 parts of an acrylic resin, 1.5-3 parts of a curing agent, 0.5-2 parts of an antistatic agent, and 2-4 parts of a plasticizer; the acrylic resin comprises 5-15 wt% of a functional monomer based on 100 wt% of the total weight of the comonomer, wherein the functional monomer comprises at least one of ethoxylated trimethylolpropane triacrylate (ETPTA) and ethoxyethoxyethyl acrylate (EOEOEA).

[0013] The antistatic adhesive film composition provided by the application uses a certain amount of a functional monomer containing two or more ether bonds as a comonomer of the acrylic resin. The ether bond in the functional monomer is easy to form a hydrogen bond with water molecules in the environment, can effectively absorb water in the environment to form a conductive water film, thereby playing an antistatic role, significantly reducing the film tearing voltage, and avoiding the influence of the voltage generated by static electricity on the touch screen sensor of the electronic product when the film is removed. In addition, due to the relatively stable chemical properties of the ether bond, the peel force rise of the adhesive film composition after high-temperature and high-humidity treatment is low.

[0014] In an embodiment, the acrylic resin comprises 80-90 wt% of soft monomers, specifically 80 wt%, 81 wt%, 83 wt%, 85 wt%, 90 wt% or any value between the two.

[0015] In some embodiments, the soft monomers comprise at least one of alkyl (meth)acrylate with alkyl carbon number of 8-12, such as at least one of isooctyl acrylate, isononyl acrylate, isodecyl acrylate, dodecyl acrylate, etc. The use of alkyl (meth)acrylate with higher alkyl carbon number as the main monomer in the present application can ensure the acrylic resin has a longer carbon chain, which can improve the flexibility of the adhesive film and enhance the adhesion of the adhesive film. Meanwhile, the longer chain segment can avoid the precipitation of small molecules and avoid peeling residue.

[0016] In an embodiment, the acrylic resin comprises 5-15 wt% of functional monomers, specifically 5 wt%, 7 wt%, 9 wt%, 11 wt%, 13 wt%, 15 wt% or any value between the two. If the amount of functional monomers is too small, the number of ether bonds contained is insufficient, which can weaken the ability to form hydrogen bonds with water molecules and reduce the antistatic effect. If the amount of functional monomers is too large, the adhesive film can absorb too much water, which can affect the bonding stability of the adhesive film.

[0017] In an embodiment, the acrylic resin comprises 1-10 wt% of polar monomers, specifically 1 wt%, 2 wt%, 3 wt%, 4 wt%, 5 wt%, 6 wt%, 7 wt%, 8 wt%, 9 wt%, 10 wt% or any value between the two.

[0018] In some embodiments, the polar monomers comprise (meth)acrylate with hydroxyl group, such as at least one of hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate and hydroxypropyl methacrylate.

[0019] The polar monomers with hydroxyl group can improve the cohesion of the acrylic resin, avoid residue when the adhesive film is peeled off, and balance the adhesion of the adhesive film. Meanwhile, the hydroxyl group has strong polarity, which is convenient for the adhesion of the adhesive film.

[0020] In some embodiments, the acrylic resin further comprises an initiator, and the amount of the initiator is 0.001-0.01 parts, specifically 0.001 parts, 0.003 parts, 0.004 parts, 0.005 parts, 0.006 parts, 0.007 parts, 0.01 parts or any value between the above two values, based on 100 parts of the total weight of the comonomer.

[0021] In some embodiments, the initiator can be a conventional thermal initiator, such as an azo initiator, including at least one of azobisisobutyronitrile, azobisisoheptyl nitrile and azobisisoamyl nitrile.

[0022] The acrylic resin in the present application can be prepared by conventional thermal initiation copolymerization. For example, a mass ratio of soft monomer, functional monomer and polar monomer is taken, a certain amount of solvent is added, and stirring is performed to mix them uniformly. The temperature is raised to 40-60°C under nitrogen protection, and half of the amount of initiator is added for 3-6 h of heat preservation reaction. Then the temperature is raised to 65-80°C, the other half of the amount of initiator is added for 3-6 h of heat preservation reaction, the temperature is lowered to room temperature, and the solvent is added to adjust the solid content of the acrylic resin.

[0023] In a specific embodiment, the solvent can be a conventional organic solvent, such as ethyl acetate, methanol, ethanol, isopropanol, toluene, n-hexane, etc.

[0024] In a specific embodiment, the solid content of the acrylic resin can be 20-60%, which can be adjusted according to different requirements.

[0025] In some embodiments, the weight average molecular weight of the acrylic resin is 500-900 thousand g / mol, such as 500 thousand g / mol, 550 thousand g / mol, 600 thousand g / mol, 650 thousand g / mol, 700 thousand g / mol, 750 thousand g / mol, 800 thousand g / mol, 850 thousand g / mol, 900 thousand g / mol or any value between the above two values.

[0026] By controlling the weight average molecular weight of the acrylic resin in the above range, on the one hand, the acrylic resin has appropriate cohesion and flexibility, balancing the adhesion and peelability of the adhesive film; on the other hand, the acrylic resin has good compatibility with the antistatic agent and the plasticizer, which can ensure that the components are uniformly dispersed in the adhesive film system, avoiding the migration and precipitation of the components due to poor compatibility.

[0027] In the present application, the weight average molecular weight can be measured by gel permeation chromatography (GPC).

[0028] In an embodiment, the amount of the curing agent in the antistatic adhesive film composition is 1.5-3 parts, specifically 1.5 parts, 1.7 parts, 1.9 parts, 2 parts, 2.2 parts, 2.4 parts, 2.6 parts, 2.8 parts, 3 parts, or any value between any two of the above values, relative to 100 parts by weight of the acrylic resin.

[0029] In some embodiments, the curing agent comprises an isocyanate-based curing agent, preferably aliphatic isocyanate and alicyclic isocyanate; for example, one or both of hexamethylene diisocyanate (HDI) and isophorone diisocyanate (IPDI).

[0030] The isocyanate of the curing agent can cross-link with the hydroxyl of the cross-linking monomer, which can improve the cohesion of the adhesive film and the bonding stability and high-temperature resistance of the adhesive film.

[0031] In an embodiment, the amount of the antistatic agent in the antistatic adhesive film composition is 0.5-2 parts, specifically 0.5 parts, 1 part, 1.5 parts, 2 parts, or any value between any two of the above values, relative to 100 parts by weight of the acrylic resin.

[0032] In some embodiments, the antistatic agent is an ionic liquid. The ionic liquid is in a liquid state at room temperature and is uniformly mixed with the acrylic resin in a small amount, which can ensure the antistatic effect of the adhesive film and is not easy to precipitate.

[0033] In some embodiments, the ionic liquid comprises at least one of imidazole-based ionic liquids, such as 1-ethyl-3-methylimidazolium acetate ([EMIM][OAc]), 1-butyl-3-methylimidazolium acetate ([BMIM][OAc]), 1-ethyl-3-methylimidazolium diethyl phosphate ([EMIM][DEP]), and 1-ethyl-3-methylimidazolium dimethyl phosphate ([EMIM][DMP]). The above imidazole-based ionic liquids are selected as the antistatic agent, which has strong water absorption and can avoid affecting the surface of the adherend in a small amount.

[0034] In an embodiment, the amount of the plasticizer in the antistatic adhesive film composition is 2-4 parts, specifically 2 parts, 3 parts, 4 parts, or any value between any two of the above values, relative to 100 parts of the acrylic resin.

[0035] In some embodiments, the plasticizer comprises polypropylene glycol (PPG).

[0036] In some embodiments, the polypropylene glycol has a weight average molecular weight of 1,000-2,000 g / mol, which can be specifically 1,000 g / mol, 1,200 g / mol, 1,500 g / mol, 1,700 g / mol, 2,000 g / mol, or any value between any two of the above values.

[0037] In the present application, polypropylene glycol (PPG) is selected as the plasticizer, which has more hydrophilic hydroxyl groups and ether bonds, both of which can form hydrogen bonds with water molecules to improve the antistatic effect. On the other hand, the plasticizer can increase the flexibility of the adhesive film, reduce the friction between the adhesive film and the surface to be pasted, and inhibit the generation of static electricity. By limiting the weight average molecular weight range of PPG, the molecular weight is large, which is not easy to precipitate, and the polarity is low, which ensures uniform mixing with the acrylic resin while avoiding excessive water absorption affecting the bonding stability of the adhesive film.

[0038] The second aspect of the present application provides an adhesive film comprising the antistatic adhesive film composition of the first aspect of the present application.

[0039] In a specific embodiment, the adhesive film can be provided with a substrate layer and a release film layer on both sides to form a protective film. The substrate plays a role of scratch protection, and the release film can prevent the adhesive film surface from being contaminated.

[0040] In some embodiments, the thickness of the adhesive film layer is 10-15 μm, which can be specifically 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, or any value between any two of the above values. The thickness of the adhesive film should not be too thick, otherwise the adhesion will be too large, which is not conducive to peeling; and if it is too thin, the adhesion will be affected.

[0041] In some embodiments, the substrate layer can use conventional polyester films, such as at least one of polyethylene terephthalate (PET), polypropylene (PP), and polyimide (PI).

[0042] In some embodiments, the thickness of the substrate layer is 38-50 μm, which can be specifically 38 μm, 40 μm, 42 μm, 44 μm, 46 μm, 48 μm, 50 μm, or any value between any two of the above values.

[0043] In some embodiments, the release film layer can use conventional PET release film. The thickness of the release film is not specifically limited and can be freely selected according to actual needs, and is generally selected to be 38-50 μm.

[0044] The present application also provides a preparation method of a protective film, which comprises the following steps: (1) stirring and mixing the acrylic resin, the antistatic agent, the plasticizer, and the curing agent uniformly to obtain an adhesive; (2) coating the adhesive on the surface of the substrate, baking at 90-120°C for 3-5 min to obtain an adhesive film; (3) laminating a release film on the surface of the adhesive film, curing at 40-60°C for 2-4 d to obtain a protective film.

[0045] In a specific embodiment, a certain amount of solvent can be added to the adhesive, which can be those listed above, and the amount of solvent can be adjusted according to the coating to adjust the solid content of the adhesive, and the solid content of the adhesive can be 15%-30%.

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0047] The materials and reagents used in the following examples are commercially available unless otherwise specified.

[0048] The present application will be described in detail below with reference to specific examples, which are used for understanding rather than limiting the present application. 1 g in the following examples represents 1 part by weight.

[0049] Example 1 I. Preparation of acrylic resin 85 g of isooctyl acrylate, 10 g of ETPTA, 5 g of hydroxyethyl acrylate, and 100 g of ethyl acetate were mixed uniformly, heated to 50°C under nitrogen protection, then 0.0025 g of AIBN was added and reacted for 4 h, then the temperature was continuously increased to 70°C, 0.0025 g of AIBN was added and reacted for 4 h, after the reaction was completed, the temperature was decreased to room temperature, and a certain amount of ethyl acetate was added to obtain an acrylic resin with a solid content of 30% and a weight average molecular weight of 600,000-700,000 g / mol.

[0050] II. Preparation of protective film 100 g of the acrylic resin prepared above was mixed uniformly with 78 g of ethyl acetate, 2 g of antistatic agent 1-ethyl-3-methylimidazolium acetate [EMIM][OAc], 3 g of plasticizer (manufacturer: Haian Petroleum Chemical Plant in Jiangsu Province, model: PPG-1500, weight average molecular weight: 1,500 g / mol), and 2 g of HDI curing agent were added, and the mixture was stirred uniformly to obtain an adhesive with a solid content of 20%; the adhesive was coated on the surface of a 50 μm thick PET substrate, baked at 100°C for 3 min to obtain an adhesive film with a thickness of 10 μm; a PET release film was laminated on the surface of the adhesive film, and cured at 50°C for 3 d to obtain a protective film.

[0051] Example 2 group This example group is carried out with reference to Example 1, only the amount of plasticizer is different, other components and compositions and its preparation method are the same as Example 1, the specific difference is shown as follows: Example 2a: 2g of PPG-1500; Example 2b: 4g of PPG-1500; Example 2c: 1g of PPG-1500; Example 2d: 5g of PPG-1500; Example 2e: without PPG-1500.

[0052] Example 3 group This example group is carried out with reference to Example 1, only the type and amount of antistatic agent is different, other components and compositions and its preparation method are the same as Example 1, the specific difference is shown as follows: Example 3a: 0.5g of 1-butyl-3-methylimidazole acetate [BMIM] [OAc]; Example 3b: 1.5g of 1-ethyl-3-methylimidazole diethyl phosphate [EMIM] [DEP]; Example 3c: 0.3g of 1-ethyl-3-methylimidazole acetate [EMIM] [OAc]; Example 3d: 2.2g of 1-ethyl-3-methylimidazole acetate [EMIM] [OAc].

[0053] Example 4 group This example group is carried out with reference to Example 1, only the type and amount of curing agent is different, other components and compositions and its preparation method are the same as Example 1, the specific difference is shown as follows: Example 4a: 1.5g of IPDI; Example 4b: 3g of HDI.

[0054] Example 5 group This example group is carried out with reference to Example 1, only the components and compositions of acrylic resin are different, other components and compositions and its preparation method are the same as Example 1, the specific difference is shown as follows: Example 5a: the soft monomer is 90g of isononyl acrylate, 5g of ETPTA, the polar monomer is equal amount of hydroxypropyl acrylate, 0.007g of AIBN, to obtain acrylic resin with Mw of 500,000~6,000,000g / mol; Example 5b: soft monomer is 80 g of isodecyl acrylate, 15 g of ETPTA, 0.003 g of AIBN, to obtain an acrylic resin with Mw of 800-900 kg / mol; Example 5c: soft monomer is 80 g of isooctyl acrylate, 20 g of ETPTA, 3 g of hydroxyethyl acrylate, 0.0045 g of AIBN, to obtain an acrylic resin with Mw of 700-800 kg / mol; Example 5d: soft monomer is 87 g of isooctyl acrylate, 3 g of ETPTA, 10 g of hydroxyethyl acrylate, 0.006 g of AIBN, to obtain an acrylic resin with Mw of 600-700 kg / mol.

[0055] Example 6 group This example group is carried out according to Example 1, only the type of plasticizer is different, other components and compositions and their preparation methods are the same as Example 1, the specific differences are as follows: Example 6a: the plasticizer uses PPG-1000, manufacturer: Jiangsu Hai'an Petroleum Chemical Plant, weight average molecular weight is 1,000 g / mol; Example 6b: the plasticizer uses PPG-2000, manufacturer: Jiangsu Hai'an Petroleum Chemical Plant, weight average molecular weight is 2,000 g / mol; Example 6c: the plasticizer uses PPG-600, manufacturer: Jiangsu Hai'an Petroleum Chemical Plant, weight average molecular weight is 600 g / mol; Example 6d: the plasticizer uses PPG-3000, manufacturer: Jiangsu Hai'an Petroleum Chemical Plant, weight average molecular weight is 3,000 g / mol.

[0056] Comparative Example 1 This comparative example is carried out according to Example 1, only the monomer composition of the acrylic resin is different, other components and compositions and their preparation methods are the same as Example 1, the specific differences are as follows: 85 g of ethyl acrylate is used instead of soft monomer, 10 g of isobornyl acrylate is used instead of functional monomer, 0.1 g of AIBN, the Mw of the obtained acrylic resin is 600-700 kg / mol.

[0057] Comparative Example 2 group This comparative example group is carried out according to Example 1, only the amount of initiator is different, other components and compositions and their preparation methods are the same as Example 1, the specific differences are as follows: Comparative Example 2a: 0.1 g of AIBN, the Mw of the obtained acrylic resin is 400-500 kg / mol; Comparative Example 2b: 0.0015 g of AIBN, the Mw of the obtained acrylic resin is 1,000-1,100 kg / mol.

[0058] Performance test The protective films prepared in the above examples and comparative examples were subjected to relevant performance tests, and the specific test methods were as follows: (1) 180° peeling force: tested according to the national standard GB / T 2792-2014 “Test method for adhesive tape peeling strength”, 24 mm x 300 mm samples were taken, and after the release film was removed, they were attached to the surface of a clean glass plate to obtain test samples, and the test samples were placed in a 23°C / 50%RH environment to test the initial 180° peeling force; The test samples were placed in a 60°C / 90%RH environment for 72 hours, and after being taken out, they were placed in a 23°C / 50%RH environment for 72 hours, and then the 180° peeling force after high temperature and high humidity was tested; The test samples after peeling under high temperature and high humidity were visually observed under a daylight lamp to observe whether white mist was precipitated on the glass surface, and if not, it was recorded as OK, otherwise it was recorded as precipitation.

[0059] (2) Film tearing voltage: tested according to the national standard GB / T 33375-2016 “Test method for electrostatic properties of adhesive tape”, 300 mm x 300 mm samples were taken, and after being placed in a 23°C / 50%RH environment for 2 hours, the release film was removed and attached to the surface of an AF-treated cover glass, an electrostatic tester (model: TREK 520) was used to detect the peeling voltage value at the separation interface when the protective film was peeled off from the glass plate, and the value was recorded; The test sample attached to the AF-treated cover glass was placed at three different points using a surface resistance meter (model: OHM-STAT-RT-100), and the resistance values were tested respectively, and the average of the three values was recorded as the resistance value.

[0060] Table 1 According to the test results above, the antistatic adhesive film composition provided by the application can effectively reduce the film tearing voltage, and has high stability under high temperature and high humidity conditions, and is not easy to precipitate the components of the adhesive layer to pollute the surface of the attached object.

[0061] According to the test results of Example 2 group, if the amount of plasticizer is too low or no plasticizer is added, the film tearing voltage will increase, and the peeling force after high temperature and high humidity will increase; if the amount of plasticizer is too high, the excess plasticizer is easy to precipitate, so that the adhesive film is aged and precipitates when peeled off, polluting the surface of the attached object.

[0062] According to the test results of the example 3 group, if the amount of the antistatic agent is too low, the antistatic property is reduced, resulting in the increase of the film tearing voltage and the film resistance; if the amount of the antistatic agent is too high, the excess antistatic agent is easy to precipitate, resulting in the precipitation after the film tearing aging of the adhesive film.

[0063] According to the test results of the example 5 group, if the amount of the functional monomer is too low, the antistatic property of the adhesive film is not enough, resulting in the increase of the film tearing voltage; if the amount of the functional monomer is too high, the room temperature peeling force of the adhesive film is reduced, affecting the adhesion.

[0064] According to the test results of the example 6 group, if the molecular weight of the antistatic agent PPG is too low, the compatibility of the antistatic agent PPG with the acrylic resin is poor, resulting in the precipitation after aging; if the molecular weight of the antistatic agent PPG is too high, the water absorption group hydroxyl is reduced too much, resulting in the increase of the film tearing voltage.

[0065] According to the test results of the comparative example 1, if the functional monomer containing ether bond is not used in the acrylic resin, the peeling force after high temperature and high humidity is increased, and the film tearing voltage is large.

[0066] According to the test results of the comparative example 2 group, if the weight average molecular weight of the acrylic resin is too large, the hydrophilicity of the functional monomer is reduced due to the increase of the chain segment, and the antistatic property of the adhesive film is reduced; if the weight average molecular weight of the acrylic resin is too small, the antistatic agent and the plasticizer are precipitated due to the reduction of the cohesive force.

[0067] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or devices that include a series of elements are not limited to those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles, or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article, or device that includes the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to the order of performing the functions as shown or discussed, but can also include performing the functions in a substantially simultaneous manner or in a reverse order, for example, the described method can be performed in an order different from the described order, and various steps can be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0068] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An antistatic adhesive film composition, characterized in that, It comprises the following components in parts by weight: 100 parts acrylic resin, 1.5 to 3 parts curing agent, 0.5 to 2 parts antistatic agent, and 2 to 4 parts plasticizer; The acrylic resin, based on a total comonomer weight of 100 wt%, includes 5-15 wt% of functional monomers, wherein the functional monomers include at least one of ethoxylated trimethylolpropane triacrylate and ethoxyethoxyethyl acrylate.

2. The antistatic adhesive film composition according to claim 1, characterized in that, The antistatic agent is an ionic liquid.

3. The antistatic adhesive film composition according to claim 2, characterized in that, The ionic liquid includes imidazole ionic liquids; Preferably, the imidazole ionic liquid includes at least one of 1-ethyl-3-methylimidazolium acetate, 1-butyl-3-methylimidazolium acetate, 1-ethyl-3-methylimidazolium diethyl phosphate, and 1-ethyl-3-methylimidazolium dimethyl phosphate.

4. The antistatic adhesive film composition according to claim 1, characterized in that, The plasticizer includes polypropylene glycol.

5. The antistatic adhesive film composition according to claim 4, characterized in that, The weight-average molecular weight of the polypropylene glycol is 1,000 to 2,000 g / mol.

6. The antistatic adhesive film composition according to claim 1, characterized in that, The acrylic resin, based on a total comonomer weight of 100 wt%, further includes 80-90 wt% soft monomers, wherein the soft monomers include at least one of (meth)acrylate alkyl esters having 8-12 alkyl carbon atoms.

7. The antistatic adhesive film composition according to claim 1 or 6, characterized in that, The acrylic resin, based on a total comonomer weight of 100 wt%, also includes 1 to 10 wt% polar monomers, including alkyl (meth)acrylates containing hydroxyl groups.

8. The antistatic adhesive film composition according to claim 7, characterized in that, The weight-average molecular weight of the acrylic resin is 500,000 to 900,000 g / mol.

9. The antistatic adhesive film composition according to claim 1, characterized in that, The curing agent includes isocyanate-based curing agents.

10. A film, characterized in that, The antistatic adhesive film composition according to any one of claims 1-9 is included.

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