Reinforced gel coat fiberboard

Abstract

The utility model discloses a reinforced gel coat fiberboard, and relates to the technical field of fiber reinforced composite materials. The reinforced gel coat fiberboard comprises an inner base body layer and an outer gel coat layer, a reinforcing layer is arranged on the side, away from the base body layer, of the gel coat layer, the reinforcing layer is soaked in the gel coat layer, and the main body material of the reinforcing layer is reinforced fibers. According to the reinforced gel coat fiberboard, the probability that the gel coat layer of the fiberboard cracks especially under the bending stress condition can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of fiber-reinforced composite materials technology, and in particular to a reinforced gel coat fiberboard. Background Technology

[0002] Reinforced gelcoat fiberboard is a type of engineered wood panel made from various fibers and resins. Fiberglass reinforced plastic (FRP) sheets are a common type of reinforced gelcoat fiberboard. FRP sheets are manufactured using new types of fiber products such as glass fiber yarn, glass fiber mat, and mesh fabric, along with various resins, through processes like extrusion, molding, and hand lay-up. As a new type of panel, FRP sheets are mainly used in industrial production as walkways, railings, and filter gratings, and in urban landscaping as manhole covers, sewer covers, and cable trench covers.

[0003] Fiberglass panels generally consist of an inner substrate layer and an outer gel coat layer. The substrate layer is the core of the panel, and its main component is resin impregnated with reinforcing fibers such as glass fiber. The gel coat layer serves two purposes: first, it acts as a protective layer for the substrate layer, improving the product's weather resistance, corrosion resistance, and wear resistance; second, it imparts patterns and colors to the product, enhancing its aesthetic appeal.

[0004] The gel coat layer of existing fiberglass panels is usually made of thermosetting resin. After the gel coat layer is formed, it is relatively brittle, which makes the outer gel coat layer prone to cracking during processing and use. In particular, the probability of cracking is even greater when fiberglass panels are subjected to bending stress, which affects their use. Utility Model Content

[0005] In order to reduce the probability of cracking in the gel coat layer of fiberboard, especially under bending stress, this application provides a reinforced gel coat fiberboard.

[0006] The technical solution for a reinforced gel coat fiberboard provided in this application is as follows:

[0007] A reinforced gelcoat fiberboard includes an inner matrix layer and an outer gelcoat layer. A reinforcing layer is disposed on the side of the gelcoat layer away from the matrix layer. The reinforcing layer is impregnated in the gelcoat layer, and the main material of the reinforcing layer is reinforcing fiber.

[0008] By employing the above technical solution, and by impregnating the gel coat layer with reinforcing fibers, the toughness of the gel coat resin increases, thereby enhancing the strength and crack resistance of the gel coat layer. This makes the resulting fiberglass panel less prone to cracking. Under bending stress, the probability of cracks appearing in the gel coat layer is reduced.

[0009] In a preferred embodiment, the reinforcing layer is a fiber felt.

[0010] By adopting the above technical solution, when fiber felt is impregnated in the gel coat layer, the surface of the fiber felt is delicate and has less impact on the aesthetics of the fiberglass panel.

[0011] In a preferred embodiment, the reinforcing layer is one or any combination of fiber yarn, fiber felt, and fiber cloth.

[0012] By adopting the above technical solutions, when using fiber yarn, fiber felt, or fiber cloth, the goal of enhancing the crack resistance of the gel coat layer can be achieved.

[0013] In a preferred embodiment, the reinforcing fiber is at least one of glass fiber, basalt fiber, carbon fiber, and plastic fiber.

[0014] By adopting the above technical solutions, the selected fibers can all enhance the gel coat layer.

[0015] In a preferred embodiment, the thickness of the substrate layer is 0.3-10 mm.

[0016] By adopting the above technical solution, the limited thickness allows for lighter weight and easier transportation without affecting the strength performance of the fiberglass panel.

[0017] In a preferred embodiment, the thickness of the gel coat layer is 0.05-0.8 mm.

[0018] By adopting the above technical solution, the limited thickness allows for lighter weight and easier transportation without affecting the strength performance of the fiberglass panel.

[0019] In a preferred embodiment, the matrix layer includes at least one fiber reinforcement layer and a resin layer impregnated and coated on the fiber reinforcement layer.

[0020] By adopting the above technical solution, the resin layer is impregnated in the fiber reinforcement layer, making the fiberglass more aesthetically pleasing.

[0021] In summary, this application has at least one of the following beneficial effects:

[0022] By impregnating reinforcing fibers into the gel coat layer, the resin in the gel coat layer becomes more tough, thereby enhancing the strength and crack resistance of the gel coat layer and making the resulting fiberglass panel less prone to cracking. Under bending stress, the probability of cracks appearing in the gel coat layer is reduced. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the reinforced gelcoat fiberboard according to an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Substrate layer; 2. Gel coat layer; 3. Reinforcing layer. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 This application will be described in further detail. It should also be noted that, to make the embodiments more comprehensive, the following embodiments are listed as best and preferred embodiments, and other alternative methods may be used by those skilled in the art; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the invention.

[0027] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0028] This application discloses a reinforced gelcoat fiberboard. (Refer to...) Figure 1 A reinforced gelcoat fiberboard includes a matrix layer 1 and a gelcoat layer 2, wherein the matrix layer 1 is located in the inner layer and the gelcoat layer 2 is located in the outer layer, and a reinforcing layer 3 is provided on the side of the gelcoat layer 2 away from the matrix layer 1.

[0029] The matrix layer 1, as the core component of the reinforced gelcoat fiberboard, includes at least one fiber reinforcement layer and a resin layer. The resin layer impregnates and coats the fiber reinforcement layer. The fiber reinforcement layer is formed by weaving fibers, and the resin layer is made of unsaturated polyester resin, epoxy resin, or phenolic resin. In this embodiment, the reinforced gelcoat fiberboard is specifically a fiberglass sheet. In the fiberglass sheet, the fiber reinforcement layer is made of glass fiber, and the resin layer is made of unsaturated polyester resin. By using glass fiber as the reinforcing material, it possesses good strength and mechanical properties. By impregnating the glass fiber with the resin layer, the texture of the glass fiber can be concealed, improving the aesthetic performance of the fiberglass panel.

[0030] Gelcoat layer 2 is formed by coating the substrate surface with gelcoat resin, specifically unsaturated polyester resin. This resin possesses excellent abrasion and impact resistance, along with good mechanical strength and resilience, providing effective protection for the substrate. Additionally, gelcoat layer 2 exhibits good appearance properties.

[0031] The main material of the reinforcing layer 3 is reinforcing fiber, which is impregnated in the gel coat layer 2 to form the reinforcing layer. Regarding the morphology of the reinforcing layer, the optimal choice is a thin fiber mat. However, in other embodiments, fiber yarn, fiber mat, or fiber cloth can also be used. Specifically, fiber yarn includes chopped fiber yarn and continuous fiber yarn; fiber mat includes chopped fiber mat, continuous fiber mat, stitch-woven mat, and composite mat; and fiber cloth includes multi-axial woven fabric.

[0032] The study found that the fiberglass panel product, under bending stress, is less prone to cracking in the substrate layer 1 due to the fiber impregnation, while the gel coat layer 2, lacking fiber impregnation, is more susceptible to cracking. Therefore, by using reinforcing fibers or other materials to impregnate the gel coat layer 2 to form a reinforcing layer, the toughness and crack resistance of the gel coat layer 2 are improved, reducing the probability of cracking under bending stress. Regarding the specific form of the reinforcing layer, compared to fiber yarn, fiber mat, and fiber cloth, using thin fiber mat has the least impact on the aesthetics of the fiberglass panel, essentially matching the surface effect of the gel coat layer 2 without fibers.

[0033] Regarding the type of reinforcing fiber, at least one or more combinations of glass fiber, basalt fiber, carbon fiber, and plastic fiber can be selected, all of which can achieve the purpose of enhancing toughness and crack resistance, thereby reinforcing the gel coat layer 2. Among them, plastic fibers include, but are not limited to, polyester fiber, nylon fiber, polyethylene fiber, polypropylene fiber, polyvinyl chloride fiber, aramid fiber, acrylic fiber, etc., and all fibers belonging to plastic materials are included within the scope of this application.

[0034] In fiberglass panels, the thickness of the substrate layer 1 is 0.3-10mm, and the thickness of the gel coat layer 2 is 0.05-0.8mm. By limiting the thickness of the substrate layer 1 and the gel coat layer 2, the fiberglass panels can achieve good strength while reducing their weight, making them lightweight and convenient for transportation and use.

[0035] The implementation principle of a reinforced gelcoat fiberboard according to an embodiment of this application is as follows: a reinforcing layer 3 is provided on the side of the gelcoat layer 2 away from the base layer 1, and reinforcing fibers are impregnated in the gelcoat layer 2. The reinforcing fibers improve the toughness of the gelcoat layer 2 and enhance its crack resistance, thereby reducing the probability of cracks appearing in the gelcoat layer 2 under bending stress.

[0036] This specific embodiment is merely an explanation of the present application and is not intended to limit the present application. After reading this specification, those skilled in the art can make modifications to this specific embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A reinforced gelcoat fiberboard, comprising an inner matrix layer (1) and an outer gelcoat layer (2), characterized in that: A reinforcing layer (3) is provided on the side of the gel coat layer (2) away from the base layer (1). The reinforcing layer (3) is impregnated in the gel coat layer (2). The main material of the reinforcing layer (3) is reinforcing fiber. By selecting reinforcing fiber material and impregnating it in the gel coat layer, the reinforcing layer is formed. The toughness of the gel coat layer is improved and the crack resistance is enhanced through the reinforcing layer. The matrix layer includes at least one fiber reinforcement layer and a resin layer impregnated and coated on the fiber reinforcement layer. The fiber reinforcement layer is made of glass fiber, and the resin layer is made of unsaturated polyester resin.

2. The reinforced laminated wood fiberboard according to claim 1, wherein: The reinforcing layer (3) is a fiber felt.

3. The reinforced laminated wood fiberboard according to claim 1, wherein: The reinforcing layer (3) is one or any combination of fiber yarn, fiber felt, and fiber cloth.

4. The reinforced laminated wood fiberboard according to claim 1, wherein: The reinforcing fiber is one of glass fiber, basalt fiber, carbon fiber, or plastic fiber.

5. The reinforced laminated wood fiberboard according to claim 1, wherein: The thickness of the substrate layer (1) is 0.3-10 mm.

6. The reinforced laminated wood fiberboard according to claim 1, wherein: The thickness of the gel coat layer (2) is 0.05-0.8 mm.

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