Glass fiber reinforced plastic wiredrawing plate and processing method thereof

Abstract

The invention relates to the technical field of glass fiber reinforced composite materials, and discloses a glass fiber reinforced plastic wiredrawing plate and a processing method thereof.The glass fiber reinforced plastic wiredrawing plate comprises an outer gel coat layer and an inner fiber reinforced matrix layer, benzotriazole type nano silicon dioxide is prepared and added into the outer gel coat layer of the glass fiber reinforced plastic wiredrawing plate, and the glass fiber reinforced plastic wiredrawing plate is obtained. The gel coat layer takes unsaturated polyester resin as a base material, on one hand, nano silicon dioxide has good compatibility with the unsaturated polyester resin after being modified, the wear resistance of the unsaturated polyester resin can be improved, and on the other hand, the unsaturated polyester resin easily initiates degradation of molecular chains under the action of ultraviolet light, so that the wear resistance of the gel coat layer is improved. By introducing the benzotriazole type ultraviolet absorber, the influence of ultraviolet light on the unsaturated polyester resin can be remarkably reduced, and the weather resistance of the unsaturated polyester resin is improved, so that the glass fiber reinforced plastic wire-drawing plate can maintain stable performance and complete structure in an outdoor environment.

Description

Technical Field

[0001] This invention relates to the field of glass fiber reinforced composite materials technology, and in particular to a fiberglass wire drawing plate and its processing method. Background Technology

[0002] Fiberglass reinforced plastic (FRP) sheets generally consist of an outer gel coat layer and an inner fiber-reinforced matrix layer. The outer gel coat layer provides a protective layer for the fiber-reinforced matrix layer, while the inner fiber-reinforced matrix layer provides the strength of the sheet. FRP sheets are lighter than steel but have similar strength; they have good insulation properties, are non-conductive and thermally conductive, making them suitable for insulating applications; and they can be molded into complex shapes, offering excellent molding flexibility. Therefore, they are widely used in the construction, transportation, and consumer goods industries.

[0003] The outer gel coat layer of fiberglass sheets enhances their weather resistance and abrasion resistance, and adds patterns and colors, improving their aesthetics. Resins that can be used as the outer gel coat layer for fiberglass sheets include unsaturated polyester resin, epoxy resin, phenolic resin, polyurethane resin, and acrylic resin. Among these, unsaturated polyester resin has low raw material cost, is suitable for large-scale production, and has strong molding adaptability; however, it performs poorly in terms of abrasion resistance and weather resistance. Therefore, it is necessary to modify unsaturated polyester resin to enable the gel coat layer to function effectively and provide better protection for the fiber-reinforced matrix layer.

[0004] In practical applications, fiberglass reinforced plastic (FRP) sheets are mostly bonded to other materials to form composite sheet structures. Generally, there are two methods for bonding FRP sheets to other materials: one is using adhesive, and the other is using an internal foaming bonding process (e.g., if the material being bonded to the FRP sheet is polyurethane, pre-foamed polyurethane foam boards can be used to bond the FRP sheet with adhesive, or the foam can be directly in contact with the FRP sheet during the foaming process and then bonded directly to the FRP sheet after cooling and solidification without adhesive). FRP sheets can be bonded to a gel coat layer, a fiber-reinforced matrix layer, or both, along with other materials; however, the roughness and cleanliness of the contact layer directly affect the final bonding effect. Therefore, research has found that by pre-drawing the film that will come into contact with the gel coat layer or fiber-reinforced matrix layer during the production of fiberglass sheets, and then curing the product, fiberglass brushed sheets can be obtained. These fiberglass brushed sheets have a mechanically polished roughness, and the surface is free of contamination, fine powder, dust, oil stains, and other impurities. This significantly improves the adhesion between fiberglass brushed sheets and other materials, and products bonded with fiberglass brushed sheets are less prone to bulging and detachment. Summary of the Invention

[0005] This invention provides a fiberglass brushed sheet and its processing method. The fiberglass brushed sheet includes an outer gel coat layer and an inner fiber-reinforced matrix layer. By preparing benzotriazole-type nano-silica and adding it to the gel coat layer, the prepared gel coat layer has excellent wear resistance and weather resistance, thereby enabling the fiberglass brushed sheet to maintain stable performance and structural integrity in outdoor environments.

[0006] A fiberglass brushed sheet includes an outer gel coat layer and an inner fiber-reinforced matrix layer;

[0007] The gel coat layer comprises the following raw materials in parts by weight:

[0008] 80-100 parts unsaturated polyester resin;

[0009] 3-4 parts cyclohexanone peroxide;

[0010] 0.8-1.2 parts cobalt naphthenate;

[0011] 4-6 parts of benzotriazole-type nano-silica;

[0012] Among them, benzotriazole-type nano-silica is prepared by surface modification of nano-silica using benzotriazole-type silane coupling agents.

[0013] Furthermore, the preparation method of the benzotriazole-type silane coupling agent is as follows:

[0014] Through the click chemiluminescence reaction of mercaptoolefins, oleic acid first reacts with dithiol compounds, and then reacts with 2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl 2-methacrylate to obtain an intermediate;

[0015] The intermediate reacts with 3-aminopropyltrimethoxysilane via amidation to yield a benzotriazole-type silane coupling agent.

[0016] Further, the dithiol compound is any one of 1,2-ethanedithiol, 1,3-propanedithiol, 1,4-butanedithiol, 1,5-pentanedithiol, or 1,6-hexanedithiol.

[0017] Furthermore, the raw materials for preparing the fiber-reinforced matrix layer include at least synthetic resin and fiber cloth.

[0018] Furthermore, the synthetic resin is an unsaturated polyester resin, which is cured and molded under the action of cyclohexanone peroxide and cobalt naphthenate.

[0019] Furthermore, the synthetic resin is a polyester resin, which is cured and molded under the action of triglycidyl isocyanate or β-hydroxyalkylamide.

[0020] Furthermore, the synthetic resin is a phenolic resin, which is cured and molded under the action of hexamethylenetetramine or p-toluenesulfonic acid.

[0021] Furthermore, the synthetic resin is a fluorocarbon resin, which is cured and molded under the action of HDI trimer or HDI biuret.

[0022] Furthermore, the raw material of the fiber cloth is any one or more of glass fiber, basalt fiber, polyester fiber, and carbon fiber.

[0023] A processing method for a fiberglass brushed sheet is as follows:

[0024] Step 1: Perform surface drawing treatment on the PET film;

[0025] The second step involves uniformly mixing unsaturated polyester, cyclohexanone peroxide, cobalt naphthenate, and benzotriazole-type nano-silica, then uniformly coating the mixture onto a PET film and curing it to form a gel coat layer. Next, the synthetic resin and curing components for promoting the synthetic resin are mixed uniformly to form a resin matrix. After uniformly coating the resin matrix with the gel coat layer, the fiber cloth is fully impregnated into the resin matrix, removing any visible air bubbles. A PET film that has undergone a fiber-reinforced process is then placed on its surface, cured, and the PET film is removed to obtain a fiberglass fiber-reinforced sheet.

[0026] Beneficial effects:

[0027] This invention prepares benzotriazole-type nano-silica and adds it to the gel coat layer of a fiberglass brushed sheet. The gel coat layer uses unsaturated polyester resin as the matrix material. On the one hand, the modified nano-silica has good compatibility with the unsaturated polyester resin and can be uniformly dispersed in the unsaturated polyester resin, giving full play to the advantages of nano-silica itself, improving the wear resistance of the unsaturated polyester resin, and facilitating the protective function of the gel coat layer on the fiber-reinforced matrix layer. On the other hand, unsaturated polyester resin is prone to molecular chain degradation under ultraviolet light, leading to a decline in the performance of the unsaturated polyester resin. The introduction of benzotriazole-type ultraviolet light absorber can significantly reduce the impact of ultraviolet light on the unsaturated polyester resin, improve the weather resistance of the unsaturated polyester resin, and prevent the gel coat layer from cracking or even delaminating. This helps the gel coat layer maintain stable performance under long-term outdoor conditions, thus enabling the fiberglass brushed sheet to maintain stable performance and structural integrity in outdoor environments. Experimental results show that the gel coat layer has excellent wear resistance and weather resistance. Detailed Implementation

[0028] Experimental Example 1:

[0029] The method for preparing benzotriazole-type nano-silica is as follows:

[0030] Through the click chemiluminescence reaction of mercaptoolefins, oleic acid first reacts with 1,2-ethylenedithiol, and then reacts with 2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl 2-methacrylate to obtain an intermediate;

[0031] The intermediate reacts with 3-aminopropyltrimethoxysilane via amidation to yield a benzotriazole silane coupling agent.

[0032] Benztriazole-type silane coupling agents were used to modify the surface of nano-silica to obtain benzotriazole-type nano-silica.

[0033] The specific preparation steps for benzotriazole-type nano-silica are as follows:

[0034] Step 1: Add 2.8g of oleic acid to 20mL of tetrahydrofuran and stir thoroughly to dissolve. Add 0.9g of 1,2-ethanedithiol and 0.2g of UV1173 photoinitiator and stir thoroughly to mix. After reacting at room temperature for 6h under UV lamp (365nm, 1kW) irradiation, add 2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl 2-methacrylate and react at room temperature for 6h under UV lamp (365nm, 1kW) irradiation. Remove tetrahydrofuran by rotary evaporation to obtain the intermediate.

[0035] Step 2: Add 7.2g of the intermediate to 30mL of toluene, add 0.2g of N-hydroxysuccinimide and 0.4g of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide, stir and mix evenly, then add 1.8g of 3-aminopropyltrimethoxysilane, react for 6h, remove toluene by vacuum distillation, wash with deionized water to obtain benzotriazole type silane coupling agent;

[0036] Step 3: Mix 5 mL of deionized water with 15 mL of anhydrous ethanol until homogeneous, add 2 g of nano-silica (particle size 200 nm), and ultrasonically disperse for 15 min to form a uniform dispersion. Add 0.2 g of benzotriazole-type silane coupling agent to 25 mL of anhydrous ethanol, adjust the pH to 4 with glacial acetic acid, stir for 1 h, mix with the uniform dispersion, react in a constant temperature water bath at 75 °C for 3 h, wash, centrifuge, and dry to obtain benzotriazole-type nano-silica.

[0037] Example 1:

[0038] A fiberglass brushed sheet, comprising an outer gel coat layer and an inner fiber-reinforced matrix layer;

[0039] The gel coat layer comprises the following raw materials in parts by weight:

[0040] 80 parts unsaturated polyester (model 189);

[0041] 3.2 parts of cyclohexanone peroxide;

[0042] 0.8 parts cobalt naphthenate;

[0043] Four portions of benzotriazole-type nano-silica (prepared in Experimental Example 1);

[0044] The fiber-reinforced matrix layer comprises the following raw materials in parts by weight:

[0045] 100 parts unsaturated polyester (model 189);

[0046] 4 parts of cyclohexanone peroxide;

[0047] 1 part cobalt naphthenate;

[0048] 30 parts medium-alkali glass fiber cloth (model CWR400D).

[0049] A processing method for a fiberglass brushed sheet is as follows:

[0050] Step 1: Use a drawing roller to perform surface drawing treatment on the PET film;

[0051] Step 2: After uniformly mixing unsaturated polyester, cyclohexanone peroxide, cobalt naphthenate, and benzotriazole-type nano-silica, coat the mixture evenly onto a smooth PET film. Cur at room temperature, then bake in an oven at 60°C for 3 hours and then at 110°C for 3 hours to form a gel coat layer. Next, uniformly mix the unsaturated polyester, cyclohexanone peroxide, and cobalt naphthenate to form a resin matrix. After uniformly coating the resin matrix onto the gel coat layer, place a layer of medium-alkali fiberglass cloth, ensuring the cloth is fully impregnated within the resin matrix and eliminating any visible air bubbles. Continue this process, alternating between layers of resin matrix and medium-alkali fiberglass cloth. Finally, cover the surface with a PET film that has undergone a fiber-reinforced curing process. Cur at room temperature, then bake in an oven at 60°C for 3 hours and then at 110°C for 3 hours. Remove the PET film to obtain the fiberglass fiber-reinforced sheet.

[0052] Example 2:

[0053] A fiberglass brushed sheet, comprising an outer gel coat layer and an inner fiber-reinforced matrix layer;

[0054] The gel coat layer comprises the following raw materials in parts by weight:

[0055] 85 parts unsaturated polyester (model 189);

[0056] 3.4 parts of cyclohexanone peroxide;

[0057] 0.85 parts cobalt naphthenate;

[0058] 4.5 parts of benzotriazole-type nano-silica (prepared in Experimental Example 1);

[0059] The fiber-reinforced matrix layer comprises the following raw materials in parts by weight:

[0060] 100 parts unsaturated polyester (model 189);

[0061] 4 parts of cyclohexanone peroxide;

[0062] 1 part cobalt naphthenate;

[0063] 30 parts medium-alkali glass fiber cloth (model CWR400D).

[0064] A processing method for a fiberglass brushed sheet is as follows:

[0065] Step 1: Use a drawing roller to perform surface drawing treatment on the PET film;

[0066] Step 2: After uniformly mixing unsaturated polyester, cyclohexanone peroxide, cobalt naphthenate, and benzotriazole-type nano-silica, coat the mixture evenly onto a smooth PET film. Cur at room temperature, then bake in an oven at 60°C for 3 hours and then at 110°C for 3 hours to form a gel coat layer. Next, uniformly mix the unsaturated polyester, cyclohexanone peroxide, and cobalt naphthenate to form a resin matrix. After uniformly coating the resin matrix onto the gel coat layer, place a layer of medium-alkali fiberglass cloth, ensuring the cloth is fully impregnated within the resin matrix and eliminating any visible air bubbles. Continue this process, alternating between layers of resin matrix and medium-alkali fiberglass cloth. Finally, cover the surface with a PET film that has undergone a fiber-reinforced curing process. Cur at room temperature, then bake in an oven at 60°C for 3 hours and then at 110°C for 3 hours. Remove the PET film to obtain the fiberglass fiber-reinforced sheet.

[0067] Example 3:

[0068] A fiberglass brushed sheet, comprising an outer gel coat layer and an inner fiber-reinforced matrix layer;

[0069] The gel coat layer comprises the following raw materials in parts by weight:

[0070] 90 parts unsaturated polyester (model 189);

[0071] 3.6 parts of cyclohexanone peroxide;

[0072] 0.9 parts cobalt naphthenate;

[0073] Five portions of benzotriazole-type nano-silica (prepared in Experimental Example 1);

[0074] The fiber-reinforced matrix layer comprises the following raw materials in parts by weight:

[0075] 100 parts unsaturated polyester (model 189);

[0076] 4 parts of cyclohexanone peroxide;

[0077] 1 part cobalt naphthenate;

[0078] 30 parts medium-alkali glass fiber cloth (model CWR400D).

[0079] A processing method for a fiberglass brushed sheet is as follows:

[0080] Step 1: Use a drawing roller to perform surface drawing treatment on the PET film;

[0081] Step 2: After uniformly mixing unsaturated polyester, cyclohexanone peroxide, cobalt naphthenate, and benzotriazole-type nano-silica, coat the mixture evenly onto a smooth PET film. Cur at room temperature, then bake in an oven at 60°C for 3 hours and then at 110°C for 3 hours to form a gel coat layer. Next, uniformly mix the unsaturated polyester, cyclohexanone peroxide, and cobalt naphthenate to form a resin matrix. After uniformly coating the resin matrix onto the gel coat layer, place a layer of medium-alkali fiberglass cloth, ensuring the cloth is fully impregnated within the resin matrix and eliminating any visible air bubbles. Continue this process, alternating between layers of resin matrix and medium-alkali fiberglass cloth. Finally, cover the surface with a PET film that has undergone a fiber-reinforced curing process. Cur at room temperature, then bake in an oven at 60°C for 3 hours and then at 110°C for 3 hours. Remove the PET film to obtain the fiberglass fiber-reinforced sheet.

[0082] Example 4:

[0083] A fiberglass brushed sheet, comprising an outer gel coat layer and an inner fiber-reinforced matrix layer;

[0084] The gel coat layer comprises the following raw materials in parts by weight:

[0085] 95 parts unsaturated polyester (model 189);

[0086] 3.8 parts of cyclohexanone peroxide;

[0087] 0.95 parts cobalt naphthenate;

[0088] 5.5 parts of benzotriazole-type nano-silica (prepared in Experimental Example 1);

[0089] The fiber-reinforced matrix layer comprises the following raw materials in parts by weight:

[0090] 100 parts unsaturated polyester (model 189);

[0091] 4 parts of cyclohexanone peroxide;

[0092] 1 part cobalt naphthenate;

[0093] 30 parts medium-alkali glass fiber cloth (model CWR400D).

[0094] A processing method for a fiberglass brushed sheet is as follows:

[0095] Step 1: Use a drawing roller to perform surface drawing treatment on the PET film;

[0096] Step 2: After uniformly mixing unsaturated polyester, cyclohexanone peroxide, cobalt naphthenate, and benzotriazole-type nano-silica, the mixture is evenly coated onto a PET film that has undergone fiber-refining treatment. It is then cured at room temperature, followed by curing in an oven at 60°C for 3 hours and then at 110°C for 3 hours to form a gel coat layer. Next, unsaturated polyester, cyclohexanone peroxide, and cobalt naphthenate are mixed evenly to form a resin matrix. After uniformly coating the resin matrix onto the gel coat layer, a layer of medium-alkali fiberglass cloth is placed, ensuring the cloth is fully impregnated within the resin matrix and eliminating any visible air bubbles. This process is repeated layer by layer, alternating between resin matrix and medium-alkali fiberglass cloth. Finally, a layer of PET film that has undergone fiber-refining treatment is placed on top, cured at room temperature, and then cured in an oven at 60°C for 3 hours and then at 110°C for 3 hours. The PET film is then removed to obtain the fiberglass fiber-refined sheet.

[0097] Example 5:

[0098] A fiberglass brushed sheet, comprising an outer gel coat layer and an inner fiber-reinforced matrix layer;

[0099] The gel coat layer comprises the following raw materials in parts by weight:

[0100] 100 parts unsaturated polyester (model 189);

[0101] 4 parts of cyclohexanone peroxide;

[0102] 1 part cobalt naphthenate;

[0103] Six portions of benzotriazole-type nano-silica (prepared in Experimental Example 1);

[0104] The fiber-reinforced matrix layer comprises the following raw materials in parts by weight:

[0105] 100 parts unsaturated polyester (model 189);

[0106] 4 parts of cyclohexanone peroxide;

[0107] 1 part cobalt naphthenate;

[0108] 30 parts medium-alkali glass fiber cloth (model CWR400D).

[0109] A processing method for a fiberglass brushed sheet is as follows:

[0110] Step 1: Use a drawing roller to perform surface drawing treatment on the PET film;

[0111] Step 2: After uniformly mixing unsaturated polyester, cyclohexanone peroxide, cobalt naphthenate, and benzotriazole-type nano-silica, the mixture is evenly coated onto a PET film that has undergone fiber-refining treatment. It is then cured at room temperature, followed by curing in an oven at 60°C for 3 hours and then at 110°C for 3 hours to form a gel coat layer. Next, unsaturated polyester, cyclohexanone peroxide, and cobalt naphthenate are mixed evenly to form a resin matrix. After uniformly coating the resin matrix onto the gel coat layer, a layer of medium-alkali fiberglass cloth is placed, ensuring the cloth is fully impregnated within the resin matrix and eliminating any visible air bubbles. This process is repeated layer by layer, alternating between resin matrix and medium-alkali fiberglass cloth. Finally, a layer of PET film that has undergone fiber-refining treatment is placed on top, cured at room temperature, and then cured in an oven at 60°C for 3 hours and then at 110°C for 3 hours. The PET film is then removed to obtain the fiberglass fiber-refined sheet.

[0112] Comparative Example 1:

[0113] A fiberglass brushed sheet, comprising an outer gel coat layer and an inner fiber-reinforced matrix layer;

[0114] The gel coat layer comprises the following raw materials in parts by weight:

[0115] 90 parts unsaturated polyester (model 189);

[0116] 3.6 parts of cyclohexanone peroxide;

[0117] 0.9 parts cobalt naphthenate;

[0118] The fiber-reinforced matrix layer comprises the following raw materials in parts by weight:

[0119] 100 parts unsaturated polyester (model 189);

[0120] 4 parts of cyclohexanone peroxide;

[0121] 1 part cobalt naphthenate;

[0122] 30 parts medium-alkali glass fiber cloth (model CWR400D).

[0123] A processing method for a fiberglass brushed sheet is as follows:

[0124] Step 1: Use a drawing roller to perform surface drawing treatment on the PET film;

[0125] Step 2: After thoroughly mixing unsaturated polyester, cyclohexanone peroxide, and cobalt naphthenate, coat the mixture evenly onto a smooth PET film. Cure at room temperature, then place it in an oven at 60°C for 3 hours and then at 110°C for 3 hours to form a gel coat layer. Mix the unsaturated polyester, cyclohexanone peroxide, and cobalt naphthenate evenly to form a resin matrix. After evenly coating the resin matrix onto the gel coat layer, place a layer of medium-alkali fiberglass cloth, ensuring that the fiberglass cloth is fully impregnated in the resin matrix and that any visible air bubbles are eliminated. Continue this process in the order of one layer of resin matrix and one layer of medium-alkali fiberglass cloth. Finally, cover the surface with a PET film that has undergone a fiber-reinforced treatment. Cure at room temperature, then place it in an oven at 60°C for 3 hours and then at 110°C for 3 hours. Remove the PET film to obtain a fiberglass fiber-reinforced sheet.

[0126] Performance testing:

[0127] I. Test of wear resistance

[0128] Using an abrasion tester, a 100# rubber abrasive wheel was used with a 500g weight loaded, and the abrasion was performed at a speed of 60r / min for 1000 revolutions. The gel coat layers in Examples 1-5 and Comparative Example 1 were tested. The wear mass of the gel coat layer before and after abrasion was measured using an electronic balance. The test results are shown in Table 1.

[0129] Table 1 Test results of wear resistance

[0130] serial number Wear mass (g) Example 1 0.004 Example 2 0.003 Example 3 0.001 Example 4 0.002 Example 5 0.004 Comparative Example 1 0.02

[0131] As shown in Table 1, the gel coat layer prepared in the embodiments of the present invention has excellent wear resistance.

[0132] II. Weather Resistance Testing

[0133] The gel coat layers in Examples 1-5 and Comparative Example 1 were tested using an ultraviolet (UV) aging test chamber to simulate the natural aging effect of the gel coat layers in a usage environment exposed to sunlight. The wavelength of the UV aging test chamber was 315-400 nm. During the aging process, the temperature in the test chamber was adjusted to 50°C, the distance between the gel coat layer and the light source was 50 mm, and the UV radiation energy density was 0.8 W / m². 2 The gel coat layer was subjected to ultraviolet radiation for 30 days, and its condition was observed. The test results are shown in Table 2.

[0134] Table 2. Test results of weather resistance

[0135] serial number gel coat layer state Example 1 No significant changes Example 2 No significant changes Example 3 No significant changes Example 4 No significant changes Example 5 No significant changes Comparative Example 1 Cracks and delamination occurred.

[0136] As shown in Table 2, the gel coat layer prepared in the embodiments of the present invention has excellent weather resistance.

Claims

1. A fiberglass brushed sheet, characterized in that, It includes an outer gel coat layer and an inner fiber-reinforced matrix layer; The gel coat layer comprises the following raw materials in parts by weight: 80-100 parts unsaturated polyester resin; 3-4 parts cyclohexanone peroxide; 0.8-1.2 parts cobalt naphthenate; 4-6 parts of benzotriazole-type nano-silica; Among them, benzotriazole-type nano-silica is prepared by surface modification of nano-silica using benzotriazole-type silane coupling agents.

2. The fiberglass brushed sheet according to claim 1, characterized in that, The preparation method of the benzotriazole-type silane coupling agent is as follows: Through the click chemiluminescence reaction of mercaptoolefins, oleic acid first reacts with dithiol compounds, and then reacts with 2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl 2-methacrylate to obtain an intermediate; The intermediate reacts with 3-aminopropyltrimethoxysilane via amidation to yield a benzotriazole-type silane coupling agent.

3. The fiberglass brushed sheet according to claim 2, characterized in that, The dithiol compound is any one of 1,2-ethanedithiol, 1,3-propanedithiol, 1,4-butanedithiol, 1,5-pentanedithiol, or 1,6-hexanedithiol.

4. The fiberglass brushed sheet according to claim 1, characterized in that, The raw materials for preparing the fiber-reinforced matrix layer include at least synthetic resin and fiber cloth.

5. A fiberglass brushed sheet according to claim 4, characterized in that, The synthetic resin is an unsaturated polyester resin, which is cured and molded under the action of cyclohexanone peroxide and cobalt naphthenate.

6. A fiberglass brushed sheet according to claim 4, characterized in that, The synthetic resin is a polyester resin, which is cured and molded under the action of triglycidyl isocyanate or β-hydroxyalkylamide.

7. A fiberglass brushed sheet according to claim 4, characterized in that, The synthetic resin is a phenolic resin, which is cured and molded under the action of hexamethylenetetramine or p-toluenesulfonic acid.

8. A fiberglass brushed sheet according to claim 4, characterized in that, The synthetic resin is a fluorocarbon resin, which is cured and molded under the action of HDI trimer or HDI biuret.

9. A fiberglass brushed sheet according to claim 4, characterized in that, The raw material of the fiber cloth is any one or more of glass fiber, basalt fiber, polyester fiber, and carbon fiber.

10. A method for processing fiberglass brushed sheets according to claims 1-9, characterized in that, The processing method is as follows: Step 1: Perform surface drawing treatment on the PET film; The second step involves uniformly mixing unsaturated polyester, cyclohexanone peroxide, cobalt naphthenate, and benzotriazole-type nano-silica, then uniformly coating the mixture onto a PET film and curing it to form a gel coat layer. Next, the synthetic resin and curing components for promoting the synthetic resin are mixed uniformly to form a resin matrix. After uniformly coating the resin matrix with the gel coat layer, the fiber cloth is fully impregnated into the resin matrix, removing any visible air bubbles. A PET film that has undergone a fiber-reinforced process is then placed on its surface, cured, and the PET film is removed to obtain a fiberglass fiber-reinforced sheet.