Processing method of glass fiber reinforced plastic battery skin plate
The fiberglass sheet production method using integrated continuous equipment and zoned drying ovens has solved the problems of low production efficiency and poor product performance, achieving efficient and stable bonding of fiberglass and resin, and improving the protective and physical properties of fiberglass sheets.
Patent Information
- Application Number
- CN202610066441.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-19
- Publication Date
- 2026-03-20
AI Technical Summary
Existing fiberglass sheet production suffers from low efficiency, poor product strength and protective performance, fixed molds leading to inflexible production, rapid reaction between resin and fiberglass with incomplete defoaming, monotonous surface texture, and insufficient overall physical properties.
The process is carried out continuously using integrated equipment, including steps such as film flattening, resin coating, fiberglass cloth laying, impregnation, debubbling, and high-temperature curing. Partitioned ovens and segmented pressure rollers are used to ensure uniform impregnation and fusion of fiberglass and resin.
It enables continuous production of products, improves the stability of glass fiber content and resin bonding, enhances the protective and physical properties of products, and increases tensile strength, Barcol hardness and impact toughness by more than 40%.
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Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of glass steel products, and particularly relates to a processing method of a glass steel battery skin plate. BACKGROUND
[0002] The glass steel plate is a composite plate material taking glass fiber as a reinforcing material and synthetic resin as a base material. The existing glass steel plate is arranged in a separate mold through layer-by-layer laying during production and processing. The processing mold has a fixed size, and the length and width thereof cannot be adjusted during production. The glass steel plate is produced through resin introduction, bubble removal, pressing and the like. The whole processing process is a piece-by-piece separate production, and each processing step is separately performed. The processing of other steps is performed at the same position after the previous step is processed. The overall production efficiency is relatively low. During the resin guiding and bubble removal in the mold, the reaction speed of the resin and the glass fiber cloth or glass fiber felt is relatively fast. When the bubble removal assembly is arranged in the mold for bubble removal treatment, the bubble removal is not complete, the glass fiber material is immersed in the resin for a short time during the production process, the strength of the whole formed product is relatively low, the efficiency of the whole production process is relatively low, the cost of the whole processing is relatively low, and the production convenience is relatively poor when different molds are matched for production and processing of products of different sizes.
[0003] The surface texture of the glass steel plate processed by the existing production method is relatively single. Even if the glass fiber cloth or glass fiber felt is stacked in multiple layers, the surface of the produced product only has a single specification of glass fiber texture, so that the overall protection performance of the external surface position is relatively poor, the overall physical performance of the product, such as tensile strength, barcol hardness and impact toughness, is relatively poor, and the durability during later use is also relatively poor. SUMMARY
[0004] The present application relates to the technical field of glass steel products, and particularly relates to a processing method of a glass steel battery skin plate.
[0005] The technical scheme of the present application is as follows: The application discloses a processing method of a glass fiber reinforced plastic battery skin plate, and has the characteristics that the processing process is continuously processed by an integrated continuous device without interruption, and the method comprises the following steps: 1) a step of arranging a film base layer, wherein the film is unwound by a flattening roller, flattened by a conveying roller, and linearly conveyed under the action of the conveying roller; 2) a step of arranging a gel coat, wherein the resin-based gel coat is uniformly arranged on the flattened film by a conveying frame and a transverse scraper; 3) a step of resin coating forming, wherein the resin is arranged in cooperation with a width-direction limiting component, and the resin is formed into a plate resin base layer by coating; 4) a step of arranging glass fiber cloth or glass fiber felt, wherein the glass fiber cloth or glass fiber felt to be arranged is arranged by multiple layers of flattening on the conveying line after the base layer is formed; 5) a step of resin impregnation processing, wherein the arranged product is conveyed to a resin impregnation station for overall resin impregnation, the resin impregnation is processed by multiple continuous resin impregnation processes, and the resin impregnation is performed by arranging a matching compression roller; 6) a step of overall bubble removal, wherein the product is subjected to thickness-direction pressure removal by upper and lower extrusion rollers, the extrusion rollers are arranged at the matching positions of the extrusion rollers, and the glass fiber product is fully contacted and impregnated with the glue during the bubble removal; 7) a step of product high-temperature curing by an oven, wherein a partition type channel oven is used for heating operation, the temperature of the partition type channel oven is arranged from low to high, and the partition temperature range of the oven is 60 DEG C to 120 DEG C; and 8) a step of cutting the cured product, wherein the product is cut into different sizes according to needs, the cut product is packed and stored to obtain the glass fiber reinforced plastic battery skin plate.
[0006] Further, in the step of arranging the gel coat, the resin glue is conveyed by a glue storage box, the bottom of the glue storage box is provided with linearly and uniformly distributed glue output holes, the glue is arranged on the film through the glue output holes, and the product width direction is limited and matched in the width direction of the film by arranging the limiting component.
[0007] Further, the oven adopts six temperature zones, and the temperature zones are arranged from low to high.
[0008] Further, the matching compression roller adopts a segmented tooth-shaped compression roller for pressing processing during the resin impregnation process.
[0009] The application has the following beneficial effects: 1. The production process realizes the integrated continuous and uninterrupted processing effect, ensures the continuity of the product process in the forming process, guarantees the quality stability of the product, and enables the texture effect on the surface of the product to form a composite fabric grain effect when the fabric product is produced.
[0010] 2. The product produced can have a higher content of glass fiber under the same conditions, ensuring better product performance and more reliable protection effect.
[0011] 3. The sealing of the product is more uniform during the bubble removal process, ensuring that the space inside the product can be supplemented with glue in time during the bubble removal process, and the bubble removal effect is more thorough.
[0012] 4. Gradual curing during the curing process ensures uniformity of internal structure fusion, longer soaking reaction time between internal glass fiber and resin structure, and more reliable structural stability.
[0013] 5. The overall protection effect is better during the later use process, the physical properties of the main structure of the product are more stable, and the mechanical properties can be improved by more than 40%. DETAILED DESCRIPTION
[0014] A method for processing fiberglass battery skin panels, employing integrated continuous equipment for uninterrupted processing, includes the following steps: 1) Setting the film base layer: The rolled film is unrolled using a flattening roller and flattened by a conveyor roller, undergoing linear conveying under the action of the conveyor roller; (enabling continuous and uninterrupted production processing) 2) Setting the gel coat: The resin-based gel coat of the ordered color is evenly laid on the flattened film using a conveyor frame and a transverse scraper; different colors of gel coat can be set according to different customer needs 3) Resin coating molding: The set resin, in conjunction with a width-direction limiting component, is coated using a scraper... The process involves: 1) forming a resin base layer for the substrate; 2) laying fiberglass cloth or fiberglass mat, where the fiberglass cloth or fiberglass mat to be laid is laid in multiple layers on the conveyor line after the resin base layer is formed; 3) impregnation, where the laid product is transported to the impregnation station for full impregnation, and multiple consecutive impregnation processes are used during the impregnation process. (This effectively extends the impregnation time and efficiency between the fiberglass product and the resin, reduces air bubbles in the main body, effectively improves the efficiency of bubble removal during the subsequent thickness extrusion roller, and effectively improves the interface between the resin and fiberglass, thereby increasing the overall strength of the product.) During the impregnation process, pressure rollers are used to ensure uniform impregnation of the product. 6) A bubble removal step is performed by applying pressure along the thickness of the product using two sets of precision extrusion rollers. (This step controls the product thickness and allows for a fusion effect between multiple layers of fiberglass cloth or felt, ensuring a composite surface texture after molding and effectively improving the product's physical properties and surface protection.) Impregnation rollers are located at the positions where the extrusion rollers are positioned. (This ensures that, under the same conditions, the fiberglass content of the produced product is uniform.) The fiber content is higher. In products produced by traditional methods, the fiberglass content of felt-based products is 22%-28% and the resin content is 72%-78%, while the fiberglass content of cloth-based products is 54%-56% and the resin content is 44%-46%. However, the fiberglass content of felt-based products produced using the method described in this application is 40%-44% and the resin content is 56%-60%, while the fiberglass content of cloth-based products is 63%-65% and the resin content is 35%-37%, thus ensuring better product performance and more reliable protective effect. This allows the product to have full contact with the colloid during the defoaming process.7) The step of heating and curing the product by the oven adopts a zoned channel type oven for heating operation, the temperature of the zoned channel type oven is set from low to high, (can gradually cure and form during the curing process, ensures the uniformity of the fusion between the internal structures, makes the penetration reaction time between the internal glass fiber and the resin structure longer, and the structural stability more reliable) the temperature range of the oven is 60-120°C; 8) The step of cutting the product after curing and forming, cutting the product into different sizes according to the needs, and packaging and storing the cut product to obtain the glass steel battery skin plate. (The whole production process realizes the effect of integrated continuous uninterrupted processing, ensures the continuity of the product process during the forming process, and ensures that the quality stability of the product is better; when producing cloth-based products, the texture effect on the surface of the product can form a composite cloth effect, for example, when 600 gram glass fiber cloth and 200 gram glass fiber cloth are set, the fusion effect of 600 gram glass fiber cloth and 200 gram glass fiber cloth can be formed, the surface can form a composite pattern of different cloth patterns, the overall protection effect is better during the later use process, the physical properties of the product main structure are more stable, and the mechanical properties can be improved by more than 40%. ); In the same resin and glass fiber structure, the tensile strength of the felt-based product processed by the traditional production method is 90-100 MPa, while the tensile strength of the product manufactured by the processing method of the application can reach 140-160 MPa. Under the same conditions, the tensile strength of the cloth-based product processed by the traditional production method is 230-260 MPa, while the tensile strength of the product manufactured by the processing method of the application can reach 300-360 MPa.
[0015] The glass steel battery skin plate prepared by the processing method is taken as an example, five sample strip structures are used for flame retardant detection, the test method is GB / T 2048-2021 method B, the test conditions are that the sample is 125mmx13.5mmx2.37mm, and the test structure is as follows , The detection equipment adopts a horizontal and vertical combustion instrument, the model is HVUL2, and the equipment number is GZMR-PL-E297. The electric heating air oven has a model of UF750 and an equipment number of GZMR-AG-E181. According to the detection results, the flame retardant performance effect is relatively reliable, and can meet the flame retardant safety demand during the use of the battery.
[0016] The experiment on physical properties is as follows, Load deflection temperature: test method adopts GB / T 1634.2-2019, load: 244g, test condition, the detection sample is 50mmx10.02mmx2.82mm, the heat transfer medium is silicone oil, the heating rate is 120℃ / h, the span is 64mm, 3 samples are detected, the detection structure is, sample one, the load deflection temperature is 272.6℃; sample two, the load deflection temperature is 270.6℃; sample three, the load deflection temperature is 271.1℃, the detection equipment adopts a thermal deformation vickers tester, the model is IC6, and the equipment number is GZMR-PL-E348.
[0017] Bending strength: test method adopts GB / T 1449-2005, test condition: normal condition: (23±2)℃, (50±5)%RH, 48h Heat aging condition: 100℃, 360h→(23±2)℃, (50±5)%RH, 24h Sample: 50mmx14.94mmx2.33mm Test speed: 10mm / min Span: 37mm Laboratory environmental condition: (23±2)℃, (50±5)%RH. 5 samples are detected, Test result: bending strength, MPa, the normal detection structure of 5 samples is 415.7, 463.7, 378.0, 388.6, 473.0, and after heat aging, it is 476.8, 441.9, 430.0, 390.8, 471.4, so the bending strength of the product can reach 424 MPa in normal condition, and can reach 442 MPa after heat aging. In the experiment, the equipment adopts an electric heating air oven, the model is UF260plus, the equipment number is GZMR-PL-E138; an electronic universal material testing machine, the model is Z2.5, and the equipment number is GZMR-PL-E370.
[0018] Impact toughness: Sample description: A-sheet Test method: GB / T 1451-2005 and customer requirements Test condition: Sample: 120mmx10mmx2.56mm Sample notch bottom remaining width: 7.08mm (notch preparation: machining) Hammer energy: 7.5J Impact speed: 3.8m / s Span: 70mm Lab environment condition: (23 ± 2) ℃, (50 ± 5) %RH. 10 samples were used for testing, and the test results were 96.07, 127.0, 113.3, 93.54, 96.80, 112.8, 139.9, 107.1, 94.74, 92.30, respectively. The average impact toughness was 107 kJ / m2. The pendulum impact tester was used for testing, the model was HIT50P, and the equipment number was GZMR-PL-E283.
[0019] Barcol hardness: Sample description: A - sheet Test method: GB / T 3854-2017 Test conditions: Sample thickness: 2.10 mm Lab environment condition: (23 ± 2) ℃, (50 ± 5) %RH. 10 samples were used for testing, and the test results were 96.07, 127.0, 113.3, 93.54, 96.80, 112.8, 139.9, 107.1, 94.74, 92.30, respectively. The average impact toughness was 107 kJ / m2. The pendulum impact tester was used for testing, the model was HIT50P, and the equipment number was GZMR-PL-E283.
[0020] Tensile test Sample description: A - sheet Test method: GB / T 1447-2005 Test conditions: Normal condition: (23 ± 2) ℃, (50 ± 5) %RH, 48h Heat aging condition: 100℃, 360h→(23±2)℃, (50±5)%RH, 24h Sample type: Type I Sample thickness: 2.24 mm Test speed: 10 mm / min Gauge length: 50 mm Chucking distance: 115 mm Laboratory environment conditions: (23 ± 2) ℃, (50 ± 5) %RH. Through the detection of 5 samples, the normal tensile strength (MPa) is 297.4, 310.2, 319.3, 290.1, 318.7, respectively, and the tensile strength (MPa) after heat aging is 312.5, 290.5, 266.9, 308.5, 301.6, respectively, and the average value can be obtained. The normal tensile strength of the product is 307 MPa, and the tensile strength after heat aging is 296 MPa. The detection equipment adopts electric hot air oven, model UF260plus, equipment number GZMR-PL-E138; automatic electronic universal material testing machine, model Z020, equipment number GZMR-PL-E399.
[0021] The glass steel skin plate prepared by the process has a felt-based product, and the mechanical properties are as follows:
[0022] The skin plate has the following characteristics, Physical properties: high-strength, high-toughness continuous plate; Lightweight and high-strength: relative density per millimeter thickness is 1.54-1.65 kg / m2, tensile strength ≥ 140 MPa; Low thermal conductivity: about 0.1 W / M·K, excellent heat preservation and insulation performance; Thermal expansion coefficient: less than or equal to 1.6*10-5 / ℃ (changes within the temperature range of 0 to +60℃, the coefficient is positive) Surface bar hardness: greater than or equal to 50 (tested by gel coat surface) Chemical properties: good corrosion resistance, good corrosion resistance to atmosphere, water and 20% concentration of acid, alkali, salt and various oils and solvents, high surface finish, strong ultraviolet resistance, good gloss retention, not easy to discolor, easy to clean; Weather resistance: temperature resistance range -40℃ to 80℃, surface covered with weather resistance m-benzene type gel coat, plate is not easy to weather cracking.
[0023] Mechanical properties: the plate has extremely strong tensile, bending strength and impact toughness, and has extremely high elasticity and recovery in bending use; Application range: suitable for dangerous and chemical product transport tank truck outer skin, tank container outer skin, etc. The service life of the outer package skin of the tank transport equipment can reach 20-25 years.
[0024] Preferably, during the gel coat application process, the resin adhesive is delivered via a glue collection box. The bottom of the glue collection box has linearly and evenly distributed glue output holes. The adhesive is applied to the film through these holes. The film width is limited by a limiting component, ensuring better uniformity of adhesive output and a better overall flatness during gel coat processing. This effectively improves the efficiency of the flattening operation and reduces processing time during production.
[0025] Preferably, the oven uses six temperature zones, with drying and curing occurring in zones ranging from low to high, which can create a gradually solidified molding effect, ensuring better molding and fusion strength of the internal structure and more stable structural performance during later use.
[0026] Preferably, the pressure rollers used in the impregnation process are segmented toothed rollers for pressing, which can make the structure more thoroughly impregnated during the impregnation process and can also play an auxiliary role in defoaming. This can achieve the initial defoaming effect, making the defoaming process more thorough and efficient in the later defoaming process.
[0027] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements or substitutions without departing from the principles of the present invention, and these improvements or substitutions should also be considered within the scope of protection of the present invention.
Claims
1. A method for processing a fiberglass battery skin panel, characterized in that, The processing adopts an integrated continuous equipment for uninterrupted processing, including the following steps: 1) The step of setting the film base layer, the roll film is unfolded by the flattening roller and flattened by the conveying roller, and then linearly conveyed under the action of the conveying roller; 2) The gel coat setting step involves evenly spreading the resin-based gel coat of the corresponding color onto the flattened film using a conveyor frame and a transverse scraper; 3) The resin coating molding step involves using the set resin with the width-direction limiting components to form the resin base layer of the board through a scraping method; 4) The fiberglass cloth or fiberglass mat laying step involves laying the fiberglass cloth or fiberglass mat to be laid in multiple layers on the conveyor line after the base layer is formed; 5) The impregnation process involves conveying the laid product to the impregnation station for full impregnation. The impregnation process is carried out through multiple continuous impregnation steps, and the impregnation is carried out by setting up pressure rollers; 6) The overall debubbling step involves applying pressure in the thickness direction to the product through two sets of upper and lower extrusion rollers to debubble. Impregnation rollers are set at the matching positions of the extrusion rollers to ensure that the fiberglass product is fully in contact with the colloid during the debubbling process; 7) The product is cured at high temperature in an oven. A partitioned channel oven is used for heating. The temperature of the partitioned channel oven is set from low to high. The temperature range of the oven partitions is 60℃ to 120℃. 8) The cured product is cut into different sizes as needed. The cut products are then packaged and stored to obtain the fiberglass battery skin panel.
2. The processing method of a fiberglass battery skin panel according to claim 1, characterized in that: In the process of setting up the gel coat, when conveying the resin glue, the glue is delivered by dripping through a glue collection box. The bottom of the glue collection box is provided with glue output holes that are linearly and evenly distributed. The glue is placed on the film through the glue output holes, and the width of the film is limited by a limiting component.
3. The processing method of a fiberglass battery skin panel according to claim 1, characterized in that: The oven has six temperature zones, with drying and curing performed in zones ranging from low to high.
4. The processing method of a fiberglass battery skin panel according to claim 1, characterized in that: During the impregnation process, the matching pressure rollers are processed using segmented toothed pressure rollers.