High-stripping composite adhesive film for photovoltaic module frame fixing adhesive tape and preparation method of high-stripping composite adhesive film

Abstract

The invention belongs to the technical field of composite adhesive films for photovoltaic modules, and particularly relates to a high-stripping composite adhesive film for a photovoltaic module frame fixing adhesive tape and a preparation method of the high-stripping composite adhesive film, and the high-stripping composite adhesive film comprises an edge layer, a middle layer and an edge layer which are sequentially laminated and co-extruded; the middle layer is prepared from the following raw materials in parts by mass: 100 parts of a polyolefin elastomer, 0.1 to 3 parts of an initiator, 0.1 to 3 parts of an assistant crosslinking agent, 0.1 to 3 parts of a coupling agent, 0.01 to 0.5 part of an antioxidant, 0.01 to 0.5 part of a light stabilizer and 5 to 15 parts of toner; the edge layer is prepared from the following raw materials in parts by mass: 100 parts of a polyolefin elastomer, 0.1 to 3 parts of an initiator, 0.1 to 3 parts of an assistant crosslinking agent, 0.1 to 3 parts of a coupling agent, 0.01 to 0.5 part of an antioxidant, 0.01 to 0.5 part of a light stabilizer and 0.3 to 1 part of a microetching aid; wherein the micro-etching auxiliary agent comprises any one or a combination of more of a urethane acrylate copolymer and trifunctional acid ester.

Description

Technical Field

[0001] The present invention belongs to the technical field of composite adhesive films for photovoltaic modules, and in particular relates to a high-peeling composite adhesive film for photovoltaic module frame fixing tape and a preparation method thereof. Background Art

[0002] The main functions of photovoltaic module frame fixing tape include fixing, sealing and protecting the frame of photovoltaic modules to ensure the stability and safety of the modules. For the sake of overall aesthetics, especially in BIPV photovoltaic building integration scenarios, the use of colored tape has become a new market demand.

[0003] However, colored tapes require the addition of color additives to the tape film base material formula, which will reduce the material's bonding strength to metal and glass.

[0004] Therefore, how to overcome the defect of insufficient bonding strength of the adhesive film used for fixing the colored photovoltaic module frame is a technical problem that urgently needs to be solved in this field.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the Invention

[0006] The embodiments of the present disclosure at least provide a high-peeling composite adhesive film for photovoltaic module frame fixing tape and a preparation method thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a high-peel composite film for a photovoltaic module frame fixing tape, comprising: an edge layer, an intermediate layer and an edge layer stacked and co-extruded in sequence; the intermediate layer is prepared by comprising the following raw materials in parts by mass: 100 parts of a polyolefin elastomer, 0.1 to 3 parts of an initiator, 0.1 to 3 parts of a co-crosslinking agent, 0.1 to 3 parts of a coupling agent, 0.01 to 0.5 parts of an antioxidant, 0.01 to 0.5 parts of a light stabilizer, and 5 to 15 parts of a color powder; the edge layer is prepared by comprising the following raw materials in parts by mass: 100 parts of a polyolefin elastomer, 0.1 to 3 parts of an initiator, 0.1 to 3 parts of a co-crosslinking agent, 0.1 to 3 parts of a coupling agent, 0.01 to 0.5 parts of a antioxidant, 0.01 to 0.5 parts of a light stabilizer, and 0.3 to 1 parts of a micro-etching aid; wherein the micro-etching aid comprises a combination of any one or more of a polyurethane acrylate copolymer and a trifunctional acid ester.

[0008] In an optional embodiment, the polyolefin elastomer is a photovoltaic-grade polyolefin elastomer with a melt flow rate of 3 to 25 g / 10 min and a melting temperature of 50 to 90°C.

[0009] In an optional embodiment, the initiator includes any one or more combinations of dicumyl peroxide, azobisisobutyronitrile, di-tert-butyl diisopropyl peroxide, and tert-butyl peroxyisopropyl carbonate.

[0010] In an optional embodiment, the auxiliary cross-linking agent includes any one or more combinations of triallyl isocyanurate, trimethylolpropane trimethacrylate, propoxylated glycerol triacrylate, ethoxylated trimethylolpropane trimethacrylate, glycerol trihydroxypropyl ether triacrylate, trimethylolpropane diallyl ether, triallyl cyanurate, propoxylated (2) neopentyl glycol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, ethoxylated pentaerythritol tetraacrylate, propoxylated pentaerythritol tetraacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, and ethoxylated glycerol triacrylate.

[0011] In an optional embodiment, the coupling agent includes any one or more combinations of n-propyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, vinyltrimethoxysilane, vinyl tert-butyltriperoxide silane, and vinyltriacetoxysilane.

[0012] In an optional embodiment, the antioxidant includes any one or more combinations of bis(4-octylphenol) diphosphate, pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxy)phenylpropionate, 2,6-di-tert-butyl-p-cresol, 4,4'-thiobis(3-methyl-6-tert-butylphenol), dilaurylthiodipropionate, and tris(2,4-di-tert-butylphenyl)phosphite.

[0013] In an optional embodiment, the light stabilizer includes any one or more combinations of bis-2,2,6,6-tetramethylpiperidinol ester, 3,5-di-tert-butyl-4-hydroxy-benzoic acid hexadecyl ester, bis(2,2,6,6-tetramethylpiperidinyl)sebacate, tris(1,2,2,6,6-pentamethyl-4-piperidinyl)phosphite, bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl)sebacate, and bis(1,2,2,6,6-pentamethyl-4-piperidinyl)sebacate.

[0014] In an optional embodiment, the color powder includes any one or more combinations of titanium dioxide, carbon black, phthalocyanine blue powder, iron oxide powder, titanium yellow powder, and phthalocyanine green powder.

[0015] In a second aspect, the embodiment of the present disclosure also provides a method for preparing a high-peel composite adhesive film for photovoltaic module frame fixing tape as described above, comprising: (1) uniformly mixing an initiator, a cross-linking agent, a coupling agent, an antioxidant, a light stabilizer, a colorant and a polyolefin elastomer in a proportion in the middle layer, and pouring the mixture into a twin-screw extruder; (2) uniformly mixing an initiator, a cross-linking agent, a coupling agent, an antioxidant, a light stabilizer, a micro-etching aid and a polyolefin elastomer in a proportion in the edge layer. Evenly pour it into a twin-screw extruder; (3) put the middle layer ingredients in barrel A, put the edge layer ingredients in barrel B, and extrude 3 layers at the same time, the thickness of the middle layer is 0.2-1.0 mm, the thickness of the edge layers on both sides is 0.1-0.3 mm, the extrusion temperature is 75-95 ° C, the extrusion speed is 5-15 m / min, and the high-peel composite film for photovoltaic module frame fixing tape can be obtained through melt extrusion, film casting, embossing, cooling, pulling, and winding processes.

[0016] In a third aspect, the embodiments of the present disclosure further provide a photovoltaic module, which uses the high-peeling composite adhesive film for the photovoltaic module frame fixing tape as described above.

[0017] The beneficial effect of the present invention is that the high-peeling composite adhesive film for photovoltaic module frame fixing tape and the preparation method thereof are achieved by setting the traditional photovoltaic module frame fixing tape from a single layer to an ABA three-layer composite co-extrusion, so that the middle layer with slightly lower bonding strength is used as an opaque adhesive film to provide color requirements, and at the same time, an acidic additive is added to the edge layer, and the high temperature during lamination is used to slightly corrode the metal and glass, thereby increasing the roughness of the metal and glass surfaces, and effectively improving the bonding strength of the adhesive film for colored photovoltaic module frame fixing tape without damaging the photovoltaic module frame.

[0018] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1This is a schematic structural diagram of a high-peeling composite adhesive film for photovoltaic module frame fixing tape provided in an embodiment of the present disclosure.

[0022] In the picture:

[0023] 1. Marginal layer; 2. Middle layer. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0026] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." when following a list of elements modify the entire list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a", "an" and "the" may also be intended to include plural forms, unless otherwise clearly indicated herein. The terms "comprise", "include" and "have" are inclusive and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the particular order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0029] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0030] An embodiment of the present disclosure provides a high-peel composite adhesive film for photovoltaic module frame fixing tape, comprising: an edge layer, an intermediate layer and an edge layer stacked and co-extruded in sequence; the intermediate layer is prepared by comprising the following raw materials in parts by mass: 100 parts of a polyolefin elastomer, 0.1 to 3 parts of an initiator, 0.1 to 3 parts of a cross-linking aid, 0.1 to 3 parts of a coupling agent, 0.01 to 0.5 parts of an antioxidant, 0.01 to 0.5 parts of a light stabilizer, and 5 to 15 parts of a colorant; the edge layer is prepared by comprising the following raw materials in parts by mass: 100 parts of a polyolefin elastomer, 0.1 to 3 parts of an initiator, 0.1 to 3 parts of a cross-linking aid, 0.1 to 3 parts of a coupling agent, 0.01 to 0.5 parts of an antioxidant, 0.01 to 0.5 parts of a light stabilizer, and 0.3 to 1 parts of a micro-etching aid; wherein the micro-etching aid comprises a combination of any one or more of a polyurethane acrylate copolymer and a trifunctional acid ester.

[0031] In some embodiments, specifically, the polyolefin elastomer is a photovoltaic-grade polyolefin elastomer with a melt flow rate of 3 to 25 g / 10 min and a melting temperature of 50 to 90°C.

[0032] In some embodiments, specifically, the initiator includes any one or more combinations of dicumyl peroxide, azobisisobutyronitrile, di-tert-butyl diisopropyl peroxide, and tert-butyl peroxyisopropyl carbonate.

[0033] In some embodiments, specifically, the auxiliary cross-linking agent includes triallyl isocyanurate, trimethylolpropane trimethacrylate, propoxylated glycerol triacrylate, ethoxylated trimethylolpropane trimethacrylate, glycerol trihydroxypropyl ether triacrylate, trimethylolpropane diallyl ether, triallyl cyanurate, propoxylated (2) neopentyl glycol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, ethoxylated pentaerythritol tetraacrylate, propoxylated pentaerythritol tetraacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, and ethoxylated glycerol triacrylate.

[0034] In some embodiments, specifically, the coupling agent includes any one or more combinations of n-propyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, vinyltrimethoxysilane, vinyl tert-butyltriperoxide silane, and vinyltriacetoxysilane.

[0035] In some embodiments, specifically, the antioxidant includes any one or more combinations of bis(4-octylphenol) diphosphate, pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxy)phenylpropionate, 2,6-di-tert-butyl-p-cresol, 4,4'-thiobis(3-methyl-6-tert-butylphenol), dilaurylthiodipropionate, and tris(2,4-di-tert-butylphenyl)phosphite.

[0036] In some embodiments, specifically, the light stabilizer includes bis-2,2,6,6-tetramethylpiperidinol ester, 3,5-di-tert-butyl-4-hydroxy-benzoic acid hexadecyl ester, bis(2,2,6,6-tetramethylpiperidinyl) sebacate, tris(1,2,2,6,6-pentamethyl-4-piperidinyl) phosphite, bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebacate, and any one or more combinations of bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate.

[0037] In some embodiments, specifically, the color powder includes any one or more combinations of titanium dioxide, carbon black, phthalocyanine blue powder, iron oxide powder, titanium yellow powder, and phthalocyanine green powder.

[0038] The embodiment of the present disclosure also provides a method for preparing a high-peel composite adhesive film for photovoltaic module frame fixing tape as described above, comprising: (1) uniformly mixing an initiator, a cross-linking agent, a coupling agent, an antioxidant, a light stabilizer, a colorant and a polyolefin elastomer in a proportion for the middle layer, and pouring the mixture into a twin-screw extruder casting machine; (2) uniformly mixing an initiator, a cross-linking agent, a coupling agent, an antioxidant, a light stabilizer, a micro-etching agent and a polyolefin elastomer in a proportion for the edge layer, and pouring the mixture into a twin-screw extruder casting machine; (3) placing the ingredients for the middle layer in barrel A and the ingredients for the edge layer in barrel B, and extruding three layers at the same time, wherein the thickness of the middle layer is 0.2 to 1.0 mm, the thickness of the edge layers on both sides is 0.1 to 0.3 mm, the film extrusion temperature is 75 to 95° C., the film extrusion speed is 5 to 15 m / min, and the high-peel composite adhesive film for photovoltaic module frame fixing tape is obtained through the steps of melt extrusion, film casting, embossing, cooling, pulling and winding.

[0039] The disclosed embodiment further provides a photovoltaic module, which uses the aforementioned high-peeling composite adhesive film for the photovoltaic module frame fixing tape.

[0040] Example 1

[0041] In this embodiment, the middle layer is composed, by mass, of 100 parts of photovoltaic-grade polyolefin elastomer, 0.5 parts of diisopropylbenzene peroxide, 0.5 parts of di-tert-butyl peroxide diisopropylbenzene, 0.5 parts of trimethylolpropane trimethacrylate, 0.6 parts of vinyl triperoxide tert-butylsilane, 0.05 parts of 4,4'-thiobis(3-methyl-6-tert-butylphenol), 0.2 parts of bis(2,2,6,6-tetramethylpiperidinyl)sebacate, and 12 parts of titanium dioxide.

[0042] The edge layer is calculated by mass: 100 parts of photovoltaic grade polyolefin elastomer, 0.5 parts of diisopropyl benzene peroxide, 0.5 parts of di-tert-butyl peroxide diisopropyl benzene, 0.5 parts of trimethylolpropane trimethacrylate, 0.6 parts of vinyl triperoxide tert-butylsilane, 0.05 parts of 4,4'-thiobis(3-methyl-6-tert-butylphenol), 0.2 parts of bis(2,2,6,6-tetramethylpiperidinyl)sebacate, and 0.4 parts of trifunctional acid ester (triallyl isocyanate).

[0043] After the two layers of materials are mixed evenly, they are pre-mixed, melt-extruded, cast into films (three thicknesses are produced, the middle layer thickness is 0.3mm; the first edge layer thickness is 0.1mm, the second edge layer thickness is 0.15mm, and the third edge layer thickness is 0.2mm), cooled, slitting and winding to obtain composite film samples.

[0044] Example 2

[0045] In this embodiment, the middle layer is composed, by mass, of 100 parts of photovoltaic-grade polyolefin elastomer, 0.5 parts of diisopropylbenzene peroxide, 0.5 parts of di-tert-butyl peroxide diisopropylbenzene, 0.5 parts of trimethylolpropane trimethacrylate, 0.6 parts of vinyl triperoxide tert-butylsilane, 0.05 parts of 4,4'-thiobis(3-methyl-6-tert-butylphenol), 0.2 parts of bis(2,2,6,6-tetramethylpiperidinyl)sebacate, and 12 parts of titanium dioxide.

[0046] The edge layer is calculated by mass: 100 parts of photovoltaic grade polyolefin elastomer, 0.5 parts of diisopropyl benzene peroxide, 0.5 parts of di-tert-butyl peroxide diisopropyl benzene, 0.5 parts of trimethylolpropane trimethacrylate, 0.6 parts of vinyl triperoxide tert-butylsilane, 0.05 parts of 4,4'-thiobis(3-methyl-6-tert-butylphenol), 0.2 parts of bis(2,2,6,6-tetramethylpiperidinyl)sebacate, and 0.6 parts of trifunctional acid ester (triallyl isocyanate).

[0047] After the two layers of materials are mixed evenly, they are pre-mixed, melt-extruded, cast into films (three thicknesses are produced, the middle layer thickness is 0.3mm; the first edge layer thickness is 0.1mm, the second edge layer thickness is 0.15mm, and the third edge layer thickness is 0.2mm), cooled, slitting and winding to obtain composite film samples.

[0048] Example 3

[0049] In this embodiment, the middle layer is composed, by mass, of 100 parts of photovoltaic-grade polyolefin elastomer, 0.5 parts of diisopropylbenzene peroxide, 0.5 parts of di-tert-butyl peroxide diisopropylbenzene, 0.5 parts of trimethylolpropane trimethacrylate, 0.6 parts of vinyl triperoxide tert-butylsilane, 0.05 parts of 4,4'-thiobis(3-methyl-6-tert-butylphenol), 0.2 parts of bis(2,2,6,6-tetramethylpiperidinyl)sebacate, and 12 parts of titanium dioxide.

[0050] The edge layer is calculated by mass: 100 parts of photovoltaic grade polyolefin elastomer, 0.5 parts of diisopropylbenzene peroxide, 0.5 parts of di-tert-butyl peroxide diisopropylbenzene, 0.5 parts of trimethylolpropane trimethacrylate, 0.6 parts of vinyl triperoxy tert-butylsilane, 0.05 parts of 4,4'-thiobis(3-methyl-6-tert-butylphenol), 0.2 parts of bis(2,2,6,6-tetramethylpiperidinyl)sebacate, and 0.9 parts of polyurethane acrylate copolymer (Sartomer).

[0051] After the two layers of materials are mixed evenly, they are pre-mixed, melt-extruded, cast into films (three thicknesses are produced, the middle layer thickness is 0.3mm; the first edge layer thickness is 0.1mm, the second edge layer thickness is 0.15mm, and the third edge layer thickness is 0.2mm), cooled, slitting and winding to obtain composite film samples.

[0052] Specifically, the photovoltaic-grade polyolefin elastomer is.

[0053] The following performance tests were conducted on the composite film samples of Examples 1 to 3: the thickness of the composite films used in the tests was 0.5 mm (with a first edge layer of 0.1 mm thickness on both sides), 0.6 mm (with a second edge layer of 0.15 mm thickness on both sides), and 0.7 mm (with a third edge layer of 0.2 mm thickness on both sides). The specific results are as follows:

[0054]

[0055]

[0056] In summary, the high-peel composite film for photovoltaic module frame fixing tape and its preparation method are achieved by setting the traditional photovoltaic module frame fixing tape from a single layer to an ABA three-layer composite co-extrusion, so that the middle layer with slightly lower bonding strength is used as an opaque film to provide color requirements, and at the same time, an acidic additive is added to the edge layer, and the high temperature during lamination is used to slightly corrode the metal and glass, thereby increasing the roughness of the metal and glass surfaces. Without damaging the photovoltaic module frame, the bonding strength of the film for colored photovoltaic module frame fixing tape is effectively improved.

[0057] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A high-peel composite film for photovoltaic module frame fixing tape, characterized in that: include: The edge layer, the middle layer and the edge layer are sequentially stacked and co-extruded; The intermediate layer is prepared by including the following raw materials in parts by mass: 100 parts of polyolefin elastomer, 0.1-3 parts of initiator, 0.1-3 parts of cross-linking agent, 0.1-3 parts of coupling agent, 0.01-0.5 parts of antioxidant, 0.01-0.5 parts of light stabilizer, 5-15 parts of color powder; The edge layer is prepared by including the following raw materials in parts by mass: 100 parts of polyolefin elastomer, 0.1-3 parts of initiator, 0.1-3 parts of cross-linking agent, 0.1-3 parts of coupling agent, 0.01-0.5 parts of antioxidant, 0.01-0.5 parts of light stabilizer, 0.3-1 parts of micro-etching aid; The micro-etching aid comprises any one or more combinations of polyurethane acrylate copolymer and trifunctional acid ester.

2. The high-peeling composite film for photovoltaic module frame fixing tape according to claim 1, characterized in that: The polyolefin elastomer is a photovoltaic-grade polyolefin elastomer with a melt flow rate of 3 to 25 g / 10 min and a melting temperature of 50 to 90° C.

3. The high-peeling composite film for photovoltaic module frame fixing tape according to claim 1, characterized in that: The initiator includes any one or more of dicumyl peroxide, azobisisobutyronitrile, di-tert-butyl diisopropyl peroxide, and tert-butyl peroxyisopropyl carbonate.

4. The high-peeling composite adhesive film for photovoltaic module frame fixing tape according to claim 1, characterized in that: The auxiliary cross-linking agent includes any one or more combinations of triallyl isocyanurate, trimethylolpropane trimethacrylate, propoxylated glycerol triacrylate, ethoxylated trimethylolpropane trimethacrylate, glycerol trihydroxypropyl ether triacrylate, trimethylolpropane diallyl ether, triallyl cyanurate, propoxylated (2) neopentyl glycol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, ethoxylated pentaerythritol tetraacrylate, propoxylated pentaerythritol tetraacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, and ethoxylated glycerol triacrylate.

5. The high-peeling composite adhesive film for photovoltaic module frame fixing tape according to claim 1, characterized in that: The coupling agent includes any one or more combinations of n-propyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, vinyltrimethoxysilane, vinyl tert-butyltriperoxide silane, and vinyltriacetoxysilane.

6. The high-peeling composite adhesive film for photovoltaic module frame fixing tape according to claim 1, characterized in that: The antioxidant includes any one or more combinations of bis(4-octylphenol) diphosphate, pentaerythritol tetra(3,5-di-tert-butyl-4-hydroxy)phenylpropionate, 2,6-di-tert-butyl-p-cresol, 4,4'-thiobis(3-methyl-6-tert-butylphenol), dilaurylthiodipropionate, and tris(2,4-di-tert-butylphenyl)phosphite.

7. The high-peeling composite film for photovoltaic module frame fixing tape according to claim 1, characterized in that: The light stabilizer includes any one or more combinations of bis-2,2,6,6-tetramethylpiperidinol ester, 3,5-di-tert-butyl-4-hydroxy-benzoic acid hexadecyl ester, bis(2,2,6,6-tetramethylpiperidinyl)sebacate, tris(1,2,2,6,6-pentamethyl-4-piperidinyl)phosphite, bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl)sebacate, and bis(1,2,2,6,6-pentamethyl-4-piperidinyl)sebacate.

8. The high-peeling composite adhesive film for photovoltaic module frame fixing tape according to claim 1, characterized in that: The color powder includes any one or more combinations of titanium dioxide, carbon black, phthalocyanine blue powder, iron oxide powder, titanium yellow powder, and phthalocyanine green powder.

9. A method for preparing a high-peeling composite adhesive film for photovoltaic module frame fixing tape according to any one of claims 1 to 8, characterized in that: include: (1) The middle layer is prepared by mixing the initiator, cross-linking agent, coupling agent, antioxidant, light stabilizer, color powder and polyolefin elastomer in a uniform ratio and pouring the mixture into a twin-screw extruder casting machine; (2) The edge layer is prepared by mixing the initiator, cross-linking agent, coupling agent, antioxidant, light stabilizer, micro-etching agent and polyolefin elastomer in a uniform ratio and pouring the mixture into a twin-screw extruder casting machine; (3) Place the middle layer ingredients in barrel A and the edge layer ingredients in barrel B, and extrude three layers at the same time. The thickness of the middle layer is 0.2-1.0 mm, and the thickness of the edge layers on both sides is 0.1-0.3 mm. The extrusion temperature is 75-95 ° C, and the extrusion speed is 5-15 m / min. After melt extrusion, cast film, embossing, cooling, pulling, and winding processes, a high-peel composite film for photovoltaic module frame fixing tape can be obtained.

10. A photovoltaic module, characterized in that: A high-peeling composite adhesive film for photovoltaic module frame fixing tape as described in any one of claims 1 to 8 is used.

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