Glass fiber reinforced plastic surface chemical galling treatment device and method based on peelable reaction film

Abstract

The invention belongs to the technical field of composite material surface treatment, and relates to a glass fiber reinforced plastic surface chemical galling treatment device and method based on a peelable reaction film, and the treatment device comprises a base material layer, a reagent storage layer loaded with an etching agent and a coupling agent, a water-soluble control layer and a pressure-sensitive adhesive bonding layer containing a microchannel. The control layer is triggered to dissolve through environmental moisture, directional release and synergistic effect of an etching agent and a coupling agent are realized, selective etching of a resin matrix and chemical activation of glass fibers are synchronously completed on the surface of the glass fiber reinforced plastic, a microporous structure with the depth of 10-50 microns and a firm chemical anchoring point are formed, a film body is integrally stripped after the reaction is completed, and the surface of the glass fiber reinforced plastic is protected. The coating is free of waste liquid, dust and fiber damage and suitable for planes and complex curved surfaces, the surface roughness Ra reaches 6.3-12.5 micrometers, and the adhesive force of the coating is improved by 42%-45%.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite material surface treatment, in particular to a glass fiber reinforced plastic surface chemical roughening treatment device and method based on a peelable reaction film. BACKGROUND

[0002] Glass fiber reinforced plastic (FRP) is widely used in wind turbine blades, shipbuilding, chemical storage tanks, rail transportation and building structures due to its light weight, high strength, corrosion resistance and strong designability. In practical engineering, glass fiber reinforced plastic components often need to be surface treated to improve the adhesion of subsequent coatings, adhesives or composite layers. Currently, the main surface roughening treatment technologies mainly include the following three types:

[0003] First, traditional mechanical roughening technology. This method uses sandpaper, grinding wheels or sanding machines to physically polish the surface of glass fiber reinforced plastic to form a rough surface. However, mechanical action can easily cause the surface glass fibers to break, causing fiber structure damage (damage rate usually ≤5%), weakening the mechanical properties of the substrate; at the same time, it produces a large amount of dust, which not only pollutes the environment, but also endangers the health of the operators. In addition, for components with complex curved surfaces or thin-walled structures such as wind turbine blades, mechanical polishing is difficult to cover uniformly, has poor adaptability, and is highly dependent on manual operation, with high labor intensity and low efficiency.

[0004] Second, liquid chemical roughening technology. This method uses acid (such as oxalic acid) or base (such as sodium hydroxide) solution to etch the surface of glass fiber reinforced plastic, dissolving part of the resin matrix to expose the fibers, and then washing with water, drying, and coating with silane coupling agent to achieve surface activation. Although this process can avoid mechanical damage, it has obvious drawbacks: first, the process steps are complicated and must be completed in multiple steps such as etching, washing, and activation; second, a large amount of acid / alkali-containing waste liquid is generated, which must be neutralized and treated before being discharged, resulting in high environmental protection costs; third, liquid reagents tend to flow, accumulate or volatilize unevenly on vertical surfaces, inverted surfaces or complex curved surfaces, resulting in inconsistent surface treatment results and affecting the reliability of subsequent bonding.

[0005] Third, dry chemical reagent film technology. In recent years, some studies have attempted to preposition chemical reagents on a carrier film to form a "dry" reaction film that is attached to the surface of the material. Although this technology reduces waste liquid discharge to some extent, existing solutions do not specifically optimize the multi-phase composite structure (resin + glass fiber) of glass fiber reinforced plastic, and generally have problems such as single film structure, uncontrollable reagent release, separation of etching and coupling processes. In particular, it cannot achieve selective dissolution of etchants on resins and simultaneous chemical bonding of coupling agents on fibers, resulting in limited surface activation and insignificant adhesion improvement, making it difficult to meet the engineering needs of high-performance composite material connections.

[0006] The application discloses a method for manufacturing a printed circuit board with through holes, an electronic device unit and application of a flexible circuit film in the device unit, wherein a polyimide film is used as a carrier medium, roughening is simultaneously performed on positions on one side of the carrier medium involved by heavy ion irradiation or fine laser irradiation when the carrier medium is subjected to the heavy ion irradiation or the fine laser irradiation, wherein the intensity of the heavy ion irradiation or the fine laser irradiation is changed at the relevant positions respectively, so that the heavy ion or the fine laser erodes the carrier medium only on the surface of the carrier medium at least substantially, and the surface is roughened.

[0007] Therefore, it is urgent to design a new glass fiber reinforced plastic surface chemical roughening treatment device and method based on a peelable reaction film to solve the problems of easy damage to the fiber structure layer, high environmental protection cost and poor curved surface adaptability in the prior art. SUMMARY

[0008] Therefore, it is urgent to design a new glass fiber reinforced plastic surface chemical roughening treatment device and method based on a peelable reaction film to solve the problems of easy damage to the fiber structure layer, high environmental protection cost and poor curved surface adaptability in the prior art.

[0009] In view of the technical defects of the existing mechanical roughening that is easy to damage fibers and generate dust, the liquid chemical roughening process that is complex and the waste liquid that is seriously polluted, and the dry chemical reagent film that cannot realize etching and activation simultaneously, the application provides a peelable reaction film with a multilayer structure, which comprises a substrate layer, a reagent storage layer loaded with etchants and coupling agents, a water-soluble control layer and a pressure-sensitive adhesive bonding layer containing microchannels. For the first time, the three mechanisms of'moisture trigger + microchannel flow guide + in-situ coupling' are integrated into a flexible peelable film, realizing the spatiotemporal controllability and green closed loop of the glass fiber reinforced plastic surface chemical roughening. The film is dissolved by environmental moisture to trigger the control layer, realizing the directional release and synergistic effect of the etchants and the coupling agents, and simultaneously completing the selective etching of the resin matrix and the chemical activation of the glass fibers on the glass fiber reinforced plastic surface, forming a micro-porous structure with a depth of 10-50 microns and a firm chemical anchoring point. After the reaction is completed, the whole peelable film body is removed, there is no waste liquid, no dust and no fiber damage, and the peelable reaction film is suitable for flat surfaces and complex curved surfaces (such as wind power blades and ship parts), the surface roughness Ra reaches 6.3-12.5 microns, and the coating adhesion is improved by 42%-45%. The application has the advantages of simple process, high environmental protection efficiency and strong adaptability, and is significantly superior to the traditional treatment method.

[0010] To achieve the above object, the technical scheme of the application is as follows:

[0011] The application discloses a glass fiber reinforced plastic surface chemical roughening treatment device based on a peelable reaction film, which comprises a substrate layer, a reagent storage layer, a water-solubility control layer and a pressure-sensitive adhesive bonding layer which are sequentially compounded from top to bottom.

[0012] The reagent storage layer is loaded with etchants and coupling agents.

[0013] The water-solubility control layer is made of polyvinyl alcohol or hydroxypropyl methyl cellulose and is used for responding to environmental humidity and controlling the release rate of reagents.

[0014] The pressure-sensitive adhesive bonding layer is provided with microchannels penetrating through the thickness direction, and the pore size is 10-20 mu m, which is used for guiding the directional penetration of etchants and coupling agents to the surface of the glass fiber reinforced plastic.

[0015] Further, the substrate layer is a PET film with a thickness of 0.1-0.3 mm, and the surface is coated with a release agent.

[0016] Further, the reagent storage layer is made of non-woven fabric or foam material, wherein the etchants are oxalic acid or sodium hydroxide, and the coupling agents are gamma-aminopropyl triethoxysilane or epoxy silane.

[0017] Further, the thickness of the water-solubility control layer is 20-180 mu m, the dissolution time is 10-30 minutes, and the dissolution rate is controlled by adjusting the polymer concentration or crosslinking degree.

[0018] Further, the peel strength of the pressure-sensitive adhesive bonding layer to the glass fiber reinforced plastic is less than or equal to 0.5 N / cm2 in the environment with a relative humidity of 60%-80%, so that the reaction is completed and the reaction film can be peeled off as a whole without residue.

[0019] Another object of the application discloses a glass fiber reinforced plastic surface chemical roughening treatment method based on a peelable reaction film, which is based on any of the above-mentioned glass fiber reinforced plastic surface chemical roughening treatment devices based on a peelable reaction film and comprises the following specific steps.

[0020] S1: cleaning the surface of the glass fiber reinforced plastic to be treated and drying;

[0021] S2: cutting and attaching the peelable reaction film to the surface of the glass fiber reinforced plastic, and pressing to make it closely adhere;

[0022] S3: under the condition of environmental humidity of 60%-80%, standing for 10-30 minutes, so that the water-solubility control layer absorbs moisture and dissolves, the etchants and coupling agents are released and penetrate to the surface of the glass fiber reinforced plastic through the microchannels, and the resin matrix etching and the glass fiber surface coupling bonding are simultaneously completed;

[0023] S4: after the reaction is completed, the whole reaction film is peeled off along an angle of 10-20 degrees, and a roughened surface with a microporous structure and chemical activation is obtained.

[0024] Further, in step S2, the reaction film is attached by rolling, and the rolling pressure is 0.1-0.3 MPa.

[0025] Further, in step S3, the etched micro-holes have a depth of 10-50 μm, and the surface roughness Ra is 6.3-12.5 μm.

[0026] Further, in step S3, the reaction temperature is 25-35 °C, and the reaction time is 30-90 min.

[0027] Further, in step S1, the glass fiber reinforced plastic surface is one of a plane, a curved surface, or a glass fiber reinforced plastic structure in a wet environment.

[0028] Compared with the prior art, the glass fiber reinforced plastic surface chemical roughening treatment device and method based on the peelable reaction film have the following advantages:

[0029] 1. The present application realizes the directional release and synchronous reaction of the reagent on the glass fiber reinforced plastic surface by constructing a multi-layer peelable reaction film structure, integrating the etching agent and the coupling agent in the same film system, and utilizing the synergistic effect of the water-soluble control layer and the micro-channel pressure-sensitive adhesive bonding layer, solves the technical problems of step-by-step etching and activation, uneven treatment, and easy over-etching in traditional liquid chemical roughening, thereby obtaining high roughness (Ra 6.3-12.5 μm) and strong chemical anchoring dual activation effect without fiber damage, and significantly improving the coating adhesion by 42-45%.

[0030] 2. The present application adopts a fully enclosed dry treatment mode, all chemical reagents are pre-packaged in a flexible film, the reaction process does not require water washing and waste liquid discharge, and the whole film can be recycled after the reaction is completed, completely avoiding the dust pollution caused by traditional mechanical roughening and the acid-base waste liquid treatment problem caused by liquid chemical roughening; at the same time, the reagent utilization rate is more than 95%, which has environmental protection and economy, and meets the industrial requirements of green manufacturing and sustainable development.

[0031] 3. The present application provides a surface treatment solution highly adapted to complex curved surfaces, the flexible film body can closely adhere to irregular curved surfaces such as wind power blades, ship hulls, and tank heads, the pressure-sensitive adhesive still maintains controllable adhesion (peeling strength ≤0.5 N / cm²) in a wet environment, ensuring uniform penetration of the reagent; the method is simple to operate, the single treatment time is shortened by 50%, and is suitable for high-altitude, outdoor, and batch operation scenes, which not only simplifies the process flow, but also greatly improves the manufacturing efficiency and connection reliability of large glass fiber reinforced plastic structures, and reduces the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate the preferred embodiment of the application and assist in

[0033] Figure 1 Structure diagram of the invention;

[0034] Figure 2 Structure diagram of the invention;

[0035] Explanation of reference signs:

[0036] 1, base material layer; 2, reagent storage layer; 3, water-soluble control layer; 4, pressure-sensitive adhesive bonding layer. DETAILED DESCRIPTION

[0037] In order to make the technical means and purposes and effects of the present application easy to understand, the embodiments of the present application will be described in detail below in combination with specific drawings.

[0038] It should be noted that all directional and positional terms used in the present application, such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", "top", "bottom", "lateral", "longitudinal", "center", etc., are used only for the purpose of explaining the relative positional relationship, connection condition, etc. between components in a certain specific state, and are only for the convenience of describing the present application, and therefore cannot be understood as a requirement for the present application to be constructed and operated in a particular orientation. In addition, the description of "first", "second", etc. in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features.

[0039] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] PVA, chemical name is polyvinyl alcohol, is made from polyvinyl acetate by alcoholysis or hydrolysis. PVA is non-toxic, odorless, friendly to human body and environment. It cannot be directly degraded by microorganisms, but can be gradually decomposed by bacteria in the environment after dissolving in water, and belongs to biodegradable materials. HPMC, chemical name is hydroxypropyl methyl cellulose, also known as hydroxypropyl methyl cellulose, is a semi-synthetic polymer extracted from natural plant fibers (such as cotton, wood pulp) and treated by etherification reaction (treated with propylene oxide and chloromethane).

[0042] As shown in Figures 1-2 The glass fiber reinforced plastic surface chemical roughening treatment device based on peelable reaction film according to the present application has a flexible sheet structure as a whole, and sequentially comprises a substrate layer 1, a reagent storage layer 2, a water-soluble control layer 3 and a pressure-sensitive adhesive bonding layer 4 from top to bottom. The multi-layer composite film can be cut into any size according to the shape of the component to be treated, and is especially suitable for glass fiber reinforced plastic structural components with complex curvature, such as the root of a wind power blade, the side of a ship, the inner wall of a chemical storage tank, etc.

[0043] The substrate layer 1 is made of a PET film with a thickness of 0.1-0.3 mm, and the upper surface thereof is coated with a release agent to facilitate subsequent whole film peeling. This layer mainly plays a supporting and protecting role, maintains the structural integrity during the reaction process, and ensures that there is no residue when peeling.

[0044] The reagent storage layer 2 is composed of non-woven fabric or open-cell foam material with high liquid absorption, and the porosity is 60%. Etching agent and coupling agent are uniformly loaded inside. In the preferred embodiment, the etching agent is 8% oxalic acid aqueous solution, and the coupling agent is silane KH-550 (2% ethanol solution), and the volume ratio of the two is 4:1. This ratio has been verified by experiments to effectively dissolve the epoxy / polyester resin matrix while fully activating the exposed glass fiber surface hydroxyl groups. The design of the reagent storage layer 2 provides "on-demand" chemical reaction, avoiding excessive corrosion caused by excessive reagents.

[0045] Preferably, the thickness of the reagent storage layer 2 is 20-800 μm.

[0046] The water-soluble control layer 3 is located between the reagent storage layer 2 and the adhesive layer, and is formed by casting and drying a polyvinyl alcohol (PVA) solution, with a thickness of 20-180 μm. The key role of this layer is to achieve controlled release in response to ambient humidity: after the film is applied to the glass fiber reinforced plastic surface, moisture in the air slowly penetrates from the edges, with a relative humidity of 60%-80%, causing the PVA layer to gradually dissolve within 10-30 minutes, thereby triggering the simultaneous release of the etchant and coupling agent. By adjusting the PVA concentration or crosslinking degree, the dissolution rate can be accurately controlled, thereby regulating the reaction depth. The actual etching depth is stably within the range of 10-50 μm, with an error of not more than ± 5 μm, effectively avoiding the over-etching problem caused by flowing or local accumulation in traditional liquid methods.

[0047] The pressure-sensitive adhesive bonding layer 4 not only serves to firmly adhere the film to the glass fiber reinforced plastic surface, but also innovatively integrates a micro-channel structure. These micro-holes, with a pore size of 10-20 μm, are distributed in a honeycomb pattern and serve as flow guide channels for the downward penetration of reagents, guiding the etchant and coupling agent to vertically and uniformly reach the material interface, preventing uneven processing caused by lateral diffusion. At the same time, the pressure-sensitive adhesive still maintains moderate adhesion in a humid environment - the actual peel strength on glass fiber reinforced plastic under a relative humidity of 70% is ≤ 0.5 N / cm², ensuring that the film does not shift during the reaction and can be easily peeled off as a whole after the reaction, without leaving any residue.

[0048] Preferably, the thickness of the pressure-sensitive adhesive bonding layer 4 is 20-70 μm.

[0049] Preferably, the micro-channels are formed by introducing soluble microsphere templates (particle size 15 μm) during the pressure-sensitive adhesive coating process, and then removing the through-holes by water washing after drying.

[0050] Based on the above device, the processing method of the present application specifically includes the following steps:

[0051] S1: Surface pretreatment

[0052] The surface of the glass fiber reinforced plastic component to be processed is cleaned to remove oil and release agent, and is baked at 40°C for 30 minutes to reduce the water content to less than 1%, so as to avoid interfering with the subsequent moisture trigger mechanism.

[0053] S2: Film application

[0054] The cuttable reaction film is applied to the target area, and a soft roller is used to roll at a pressure of 0.1-0.3 MPa to remove air bubbles and ensure that the film is tightly adhered to the substrate, with a bonding degree of > 95% on curved surfaces.

[0055] S3: Moisture-triggered reaction

[0056] The component after the film is placed in an environment with a temperature of 25-35℃ and a relative humidity of 60%-80% for 30-90 minutes. During this period, the ambient moisture penetrates from the edge of the film, dissolves the water-soluble control layer 3, releases the reagent; the etchant selectively dissolves the resin matrix to form 10-50μm deep micropores, while the coupling agent reacts with the exposed glass fiber surface to form a firm chemical bonding layer.

[0057] S4: stripping and post-processing

[0058] After the reaction is completed, the whole film is slowly stripped at a small angle of 10°-20°. Due to the reasonable design of the pressure-sensitive adhesive, the stripping process is smooth without tearing or residue. The resulting surface presents a uniform circular arc microporous structure, with a rough feel but no sharp edges, and a surface roughness Ra of 6.3-12.5μm. The preferred angle is 15°. More than 95% of the reagent has participated in the surface reaction or been adsorbed by the substrate, and the remaining trace amount of reagent is wrapped in the non-woven fabric layer. The whole film is disposed as general industrial solid waste, which meets the GB 5085.3-2007 leaching toxicity standard.

[0059] Tests have shown that the glass fiber reinforced plastic sample treated by the present application has a 42%-45% increase in tensile shear strength with a two-component epoxy adhesive, and a 5B grade (ASTM D3359) in crosshatch adhesion test, and no delamination or blistering after high and low temperature cycles, with excellent durability.

[0060] In addition, in the actual application of a wind turbine blade manufacturing plant, the present method successfully replaces the original manual polishing process, and is suitable for unsaturated polyester (UP), epoxy (EP) and vinyl ester (VE) resin-based glass steel. The effect of phenolic type is limited due to the high crosslinking density, and the etchant concentration needs to be adjusted. The treatment time at the root of a single blade is shortened from 90 minutes to 45 minutes, and there is no need for dust collection equipment and waste liquid treatment system, and the comprehensive cost is reduced by about 30%. In the repair of ship glass steel bulkhead, even in a high-humidity deck environment, the film body can still be stably attached and effectively activated, verifying its strong adaptability to complex working conditions.

[0061] In summary, the present application realizes the precision, greenness and universality of glass fiber reinforced plastic surface treatment through the system integration of material-structure-process, and provides a reliable and efficient new technical path for high-performance composite material connection.

[0062] The technical advantages of the present application compared with the prior art are shown in Table 1:

[0063] Table 1. Comparison of technical advantages

[0064]

[0065] Therefore, the application has the following three advantages: 1) cost reduction: manual polishing and waste liquid treatment are omitted, and the comprehensive cost is reduced by 30%;

[0066] 2) efficiency improvement: 25%-80% according to actual working conditions, suitable for batch processing of large components;

[0067] 3) application scenario expansion: covering wind power blade repair, ship glass fiber reinforced plastic parts, chemical storage tank and other scenarios, accounting for 20% of the global glass fiber reinforced plastic product market.

[0068] Example 1

[0069] As shown in the figure, the peelable reaction film structure: Figure 1

[0070] 1) The thickness of the substrate layer 1 is 200 μm:

[0071] Material: PET flexible film, tensile strength ≥ 50 MPa;

[0072] Function: Provide mechanical support and peelability, pre-coated with release agent (silicone oil) on the surface for easy peeling later.

[0073] 2) The thickness of the reagent storage layer 2 is 500 μm:

[0074] Material: Non-woven fabric, porosity 60%, loaded with the following reagents:

[0075] Etching agent: 8% oxalic acid solution or 5% sodium hydroxide solution;

[0076] Coupling agent: silane KH-550 (2% ethanol solution) or epoxy silane (3%)

[0077] Function: Store and release chemical reagents in a directional manner through capillary action.

[0078] 3) The thickness of the water-soluble control layer 3 is 100 μm:

[0079] Material: Water-soluble polyvinyl alcohol (PVA) film, dissolution time 20-40 minutes, controlled by environmental humidity;

[0080] Function: Regulate the release rate of reagents to avoid overshooting of the reaction.

[0081] 4) The thickness of the pressure-sensitive adhesive bonding layer 4 is 50 μm:

[0082] Material: Acrylic pressure-sensitive adhesive, peel strength ≤ 0.5 N / cm², containing microchannels with a pore size of 10-20 μm;

[0083] Function: Closely adhere to the glass fiber reinforced plastic curved surface, and the microchannels promote the penetration of reagents to the substrate surface.

[0084] ​Process

[0085] Step 1: Surface pretreatment

[0086] Clean the substrate: wipe the FRP surface with isopropyl alcohol to remove oil, dust and release agent residues;

[0087] Drying treatment: bake at 40°C for 30 minutes to ensure that the substrate contains <1% moisture to prevent water vapor from interfering with the reaction.

[0088] Step 2: Film application

[0089] Cut the reaction film to the target size, which should cover the treatment area with a 2 cm extension;

[0090] Peel off the release film from the substrate layer 1, press the pressure-sensitive adhesive layer 4 onto the FRP surface, roll to remove bubbles, and the rolling pressure is 0.2 MPa.

[0091] Step 3: Reaction activation

[0092] Environmental control:

[0093] Temperature: 25-35°C, as the optimal reaction temperature;

[0094] Humidity: 60-80%, which is used to activate the water-soluble control layer 3 to dissolve;

[0095] Reaction monitoring:

[0096] After the water-soluble control layer 3 dissolves, the etchant contacts the FRP surface through the microchannel, dissolves the resin matrix, and the reaction depth is 30±5 μm;

[0097] The coupling agent penetrates into the micropores at the same time and bonds with the exposed glass fiber hydroxyl group, with a bonding energy ≥40 kJ / mol.

[0098] Step 4: Film stripping and effect verification

[0099] After 60 minutes of reaction, slowly strip the film at an angle of 15° to avoid residual adhesive layer;

[0100] Effect detection:

[0101] Surface roughness: contact profilometer measurement Ra=8.2 μm, with a target value >6.3 μm;

[0102] Adhesion: crosshatch method test (ASTM D3359), with a coating adhesion of 5B grade and no peeling.

[0103] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for chemical roughening of the surface of glass fiber reinforced plastics based on peelable reaction films, characterized in that, The substrate layer (1), the reagent storage layer (2), the water-solubility control layer (3) and the pressure-sensitive adhesive layer (4) are sequentially compounded from top to bottom. The reagent storage layer (2) is loaded with etchants and coupling agents. The water-solubility control layer (3) is made of polyvinyl alcohol or hydroxypropyl methyl cellulose, and is used to respond to environmental humidity and control the release rate of reagents. The pressure-sensitive adhesive layer (4) is provided with microchannels penetrating through the thickness direction, with a pore size of 10-20 μm, and is used to guide the directional penetration of etchants and coupling agents to the surface of glass fiber reinforced plastic.

2. The peelable reaction film based glass surface chemical hackling treatment apparatus according to claim 1, characterized by, The substrate layer (1) is a PET film with a thickness of 0.1-0.3 mm, and the surface is coated with a release agent.

3. The peelable reaction film based glass surface chemical hackling treatment apparatus according to claim 2, characterized by, The reagent storage layer (2) is made of non-woven fabric or foam material, wherein the etchant is oxalic acid or sodium hydroxide, and the coupling agent is γ-aminopropyl triethoxysilane (KH-550) or epoxy silane.

4. The peelable reaction film based glass surface chemical hackling treatment apparatus according to claim 2, characterized by, The thickness of the water-solubility control layer (3) is 20-180 μm, the dissolution time is 10-30 minutes, and the dissolution rate is controlled by adjusting the polymer concentration or crosslinking degree.

5. The peelable reactive film based glass surface chemical hackling treatment apparatus according to claim 3, wherein The peel strength of the pressure-sensitive adhesive layer (4) to glass fiber reinforced plastic under the condition of relative humidity 60%-80% is ≤0.5 N / cm², which ensures that the reaction is completed and the whole reaction film can be peeled off without residue.

6. A method for chemical surface roughening of glass fiber reinforced plastics based on peelable reaction films, characterized by The glass fiber reinforced plastic surface chemical roughening treatment device based on the peelable reaction film according to any one of claims 1-5 comprises the following specific steps: S1: cleaning the surface of the glass fiber reinforced plastic to be treated and drying; S2: cutting the peelable reaction film and attaching it to the surface of the glass fiber reinforced plastic, and pressing to make it tightly adhere; S3: placing under the condition of environmental humidity 60%-80% for 10-30 minutes, so that the water-solubility control layer (3) absorbs moisture and dissolves, releases etchants and coupling agents, and penetrates to the surface of the glass fiber reinforced plastic through the microchannels, simultaneously completing the etching of the resin matrix and the coupling bonding of the glass fiber surface; S4: after the reaction is completed, the whole reaction film is peeled off at an angle of 10°-20° to obtain a roughened surface with a microporous structure and chemical activation.

7. The peelable reaction film based surface chemical hackling process for glass fiber reinforced plastics as claimed in claim 6 wherein, In step S2, the reaction film is attached by rolling, and the rolling pressure is 0.1-0.3 MPa.

8. The peelable reaction film based surface chemical hackling process for glass fiber reinforced plastics as claimed in claim 6 wherein, In step S3, the etching-formed micropores have a depth of 10-50 μm and a surface roughness Ra of 6.3-12.5 μm.

9. The peelable reaction film based surface chemical hackling process for glass fiber reinforced plastics as claimed in claim 6 wherein, In step S3, the reaction temperature is 25-35 °C, and the reaction time is 30-90 min.

10. The peelable reaction film based surface chemical hackling process for glass fiber reinforced plastics as claimed in claim 6 wherein, In step S1, the surface of the glass fiber reinforced plastic is one of a plane, a curved surface or a glass fiber reinforced plastic structure in a humid environment.

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