A composite column of fiber-reinforced plastic and its processing method

Abstract

The present invention relates to a composite column of fiber - reinforced plastics and a processing method thereof, including a core material, a rigid foamed plastic body, resin, a reinforcing fiber member and a structural layer. A plurality of rigid foamed plastic bodies surround the core material and are arranged at intervals, and there is a gap part between adjacent rigid foamed plastic bodies. The reinforcing fiber member is arranged in the gap part, the reinforcing fiber member extends separately along the surface of the rigid foamed plastic body and is integrally combined with the structural layer, the reinforcing fiber member is connected to the core material, the structural layer is arranged around the outside of the rigid foamed plastic body, and the resin is filled in the gap part. The present invention can reduce the thickness of the structural layer and the reinforcing fiber member, save materials; has strong bending resistance and strong corrosion resistance; can expand the application range and can be applied to ocean engineering equipment such as deep - sea cages; has a lower manufacturing cost; can provide additional buoyancy, has a smaller specific gravity, and for the same bending strength, the thickness of the traditional metal column is larger; the overall weight is light and the specific gravity is small, and it can be used as a floating body.

Description

Technical Field

[0001] The present invention relates to the technical field of composite columns, and particularly relates to a composite column made of fiber-reinforced plastics and a processing method thereof. Background Art

[0002] A composite column is a columnar member made of composite materials and can be used for structural support, such as an offshore platform or a deep-sea cage. Currently, conventional profile columns are usually solid or hollow. A solid column has good structural strength and strong bending resistance, but it consumes a large amount of materials, has a large weight, and a high cost; a hollow column has a low cost and a small weight, but its structural strength is poor, and usually, reinforcing ribs need to be added inside to improve the bending resistance. If the bending resistance needs to be enhanced, the reinforcing ribs need to be thickened, and the improvement of its bending resistance is limited. In addition, the existing fiberglass pipes or fiberglass columns have poor radial bending resistance, which limits their scope of use. Summary of the Invention

[0003] In order to solve the problems of the prior art, the present invention provides a composite column made of fiber-reinforced plastics and a processing method thereof, which can reduce the thickness of the structural layer and the fiber-reinforcing member, save materials, have strong bending resistance, a small specific gravity, and a light weight.

[0004] The specific technical solution is as follows: A composite column made of fiber-reinforced plastics includes a core material, a rigid foam plastic body, resin, a fiber-reinforcing member, and a structural layer. Multiple rigid foam plastic bodies surround the core material and are arranged at intervals, and there is a gap between adjacent rigid foam plastic bodies. The fiber-reinforcing member is arranged in the gap, and the fiber-reinforcing member extends separately along the surface of the rigid foam plastic body and is integrally combined with the structural layer. The fiber-reinforcing member is connected to the core material. The structural layer is arranged around the outside of the rigid foam plastic body, and the resin is filled in the gap.

[0005] The following are the subsidiary technical solutions of the present invention.

[0006] As a preferred solution, one fiber-reinforcing member is provided on adjacent two rigid foam plastic bodies. The rigid foam plastic body includes a first side surface and a second side surface. The fiber-reinforcing member is attached to the first side surface or the second side surface, and the fiber-reinforcing member is combined with the structural layer on the outer side surface.

[0007] As a preferred solution, the rigid foam plastic body includes a curved surface, and extension segments are provided at both ends of the fiber-reinforcing member, and the extension segments are attached to the curved surface.

[0008] As a preferred solution, adjacent fiber-reinforcing members are sewn to form a socket hole, and the core material is inserted into the socket hole.

[0009] As a preferred solution, a surface layer is provided on the outer surface of the structural layer.

[0010] As a preferred solution, the core material is made of a flexible material.

[0011] Preferably, the reinforcing fiber member is a fiber cloth or a fiber felt, and the structural layer is made of a glass fiber reinforced plastic material.

[0012] A processing method for a composite column of fiber reinforced plastic, comprising the following steps:

[0013] a) Cutting the reinforcing fiber member;

[0014] b) Sewing the connecting sections of adjacent reinforcing fiber members to form a socket hole;

[0015] c) Inserting the core material into the socket hole;

[0016] d) Fixing both ends of the core material on the frame and tightening to form a straight line;

[0017] e) Processing the rigid foam plastic and the structural layer by a hand lay-up process or a filament winding process;

[0018] f) Curing the composite column;

[0019] g) Cutting the heads at both ends of the composite column.

[0020] Preferably, the hand lay-up process comprises the following steps:

[0021] S1) Cutting the rigid foam plastic body and preparing the resin;

[0022] S2) Smearing the resin on the rigid foam plastic body and attaching the reinforcing fiber member to the rigid foam plastic body;

[0023] S3) Attaching the structural layer to the surface of the rigid foam plastic body through the resin.

[0024] Preferably, the filament winding process comprises the following steps:

[0025] S100) Cutting the rigid foam plastic body and preparing the resin;

[0026] S101) Smearing the resin on the rigid foam plastic body and attaching the reinforcing fiber member to the rigid foam plastic body;

[0027] S102) After soaking the structural layer in the resin, winding it around the rigid foam plastic body.

[0028] Technical effects of the present invention: A composite column of fiber-reinforced plastic according to the present invention has the following advantages: 1. It can reduce the thickness of the structural layer and the fiber reinforcement, saving materials; 2. It has strong bending resistance and strong corrosion resistance; 3. It can expand the application range and can be applied to marine engineering equipment such as deep-sea cages; 4. The manufacturing cost is relatively low; 5. It can provide additional buoyancy, has a relatively small specific gravity, and for the same bending strength, the thickness of traditional metal columns is larger; 6. The overall weight is light and the specific gravity is small, and it can be used as a floating body; 7. It has strong corrosion resistance. The extrusion force and fitting generated by the rigid foam effectively improve the bending resistance of the fiber reinforcement under the influence of lateral compressive stress, and reducing the thickness of the fiber reinforcement improves the overall rigidity; 8. The improvement of the material connection strength formed by sewing, thereby improving the overall structural strength and stiffness. Brief Description of the Drawings

[0029] Figure 1 is a cross-sectional view of a composite column of fiber-reinforced plastic according to an embodiment of the present invention.

[0030] Figure 2 is a schematic diagram of a rigid foamed plastic body according to an embodiment of the present invention.

[0031] Figure 3 is another cross-sectional view of a composite column of fiber-reinforced plastic according to an embodiment of the present invention.

[0032] Figure 4 is a processing schematic diagram of a composite column of fiber-reinforced plastic according to an embodiment of the present invention. Detailed Embodiments

[0033] Next, the substantial features and advantages of the present invention will be further described in conjunction with examples, but the present invention is not limited to the listed examples.

[0034] Such as Figures 1 to 4As shown in the figure, a composite column of fiber-reinforced plastic in this embodiment includes a core material 1, a rigid foamed plastic body 2, a resin 3, a reinforcing fiber member 4, and a structural layer 5. Multiple rigid foamed plastic bodies 2 surround the core material 1 and are arranged at intervals. There is a gap portion 6 between adjacent rigid foamed plastic bodies 2. The reinforcing fiber member 4 is disposed in the gap portion 6 and is connected to the core material 1. The structural layer 5 is disposed around the outside of the rigid foamed plastic body 2, and the resin 3 is filled in the gap portion 6. In the above technical solution, when the composite column receives a radial force, the rigid foamed plastic body can resist the lateral bending of the reinforcing fiber member; by providing the reinforcing fiber member, it has good tensile properties. By providing the core material, the lateral force of the composite column can be continuous, the bonding area with the reinforcing fiber member can be increased, and the stress area is large; in addition, it can be used as a processing reference to facilitate the processing of the composite column. By providing the resin, the connection firmness between the structural layer and the rigid foamed plastic body can be enhanced, and the connection firmness between the rigid foamed plastic body and the reinforcing fiber member can be enhanced. Through the above technical solution, by using the reinforcing fiber member as a "rib", the tensile deformation and extrusion deformation of the composite column can be reduced.

[0035] In this embodiment, each rigid foamed plastic body 2 is provided with a reinforcing fiber member 4. The rigid foamed plastic body 2 includes a first side surface 21 and a second side surface 22. The reinforcing fiber member is attached to the first side surface and the second side surface, so that the reinforcing fiber member can be attached to the rigid foamed plastic body.

[0036] In this embodiment, the rigid foamed plastic body 2 includes an arc surface 23. Both ends of the reinforcing fiber member 4 are provided with extension segments 41, and the extension segments 41 are attached to the arc surface 23, so as to enhance the bonding force between the reinforcing fiber member and the rigid foamed plastic body and enable stable attachment. The extension segments 41 can overlap, and the extension segments can surround the rigid foamed plastic body. By winding and overlapping multiple extension segments, a structural layer can be directly formed.

[0037] In this embodiment, adjacent reinforcing fiber members are sutured to form a socket hole 42, and the core material 1 is inserted into the socket hole 42. The adjacent reinforcing fiber members are sutured through a suture portion 7, thereby increasing the structural connection and facilitating the installation of the core material at the same time.

[0038] In this embodiment, a surface layer 7 is provided on the outer surface of the structural layer 5. The surface layer 7 can be a protective layer or a decorative layer, such as a protective layer formed of an anti-corrosion material and a decorative layer with different colors.

[0039] In this embodiment, the core material is made of flexible material. The core body can be solid or hollow. Specifically, steel wire or glass fiber can be used, and glass fiber is used in this embodiment. The reinforcing fiber member is a fiber cloth or a fiber felt. The structural layer is made of fiberglass material, and fiberglass has the advantages of strong tensile force, light specific gravity, and corrosion resistance. Glass fiber and fiberglass have good adhesion to resin, thus enhancing the adhesive force. The fiber cloth can be glass fiber cloth, carbon fiber cloth, aramid, etc., and the fiber felt can be glass fiber felt. The rigid foamed plastic body of this embodiment is made of closed-cell rigid foamed plastic material. The pores are closed, the water absorption rate is low, there is air in the pores, and the compressive stress is large. The composite column of this embodiment can be circular, or polyhedron, ellipse, cone (in the length direction), multi-stage column (in the length direction).

[0040] A processing method for a fiber-reinforced plastic composite column includes the following steps: a) cutting the reinforcing fiber member; b) sewing the connecting sections of adjacent reinforcing fiber members to form a socket hole; c) threading the core material into the socket hole; d) fixing both ends of the core material on the rack 8 and tightening to form a straight line;

[0041] e) processing the rigid foamed plastic and the structural layer by hand lay-up process or filament winding process to form the composite column 100; f) curing the composite column; g) cutting the heads at both ends of the composite column. In this embodiment, the rack 8 includes a turntable 81. The turntable clamps the core material and can rotate.

[0042] In this embodiment, the hand lay-up process includes the following steps: S1) cutting the rigid foamed plastic body and preparing the resin; S2) applying the resin on the rigid foamed plastic body and attaching the reinforcing fiber member to the rigid foamed plastic body; S3) attaching the structural layer to the surface of the rigid foamed plastic body through the resin.

[0043] In this embodiment, the filament winding process includes the following steps: S100) cutting the rigid foamed plastic body and preparing the resin; S101) applying the resin on the rigid foamed plastic body and attaching the reinforcing fiber member to the rigid foamed plastic body; S102) soaking the structural layer in the resin and then winding it around the rigid foamed plastic body.

[0044] A fiber-reinforced plastic composite column of this embodiment has the following advantages: 1. It can reduce the thickness of the structural layer and the reinforcing fiber member, saving materials; 2. It has strong bending resistance and strong corrosion resistance; 3. It can expand the application range and can be applied to marine engineering equipment such as deep-sea cages; 4. The manufacturing cost is relatively low; 5. It can provide additional buoyancy, has a small specific gravity, and to achieve the same bending strength, the thickness of traditional metal columns is greater; 6. The overall weight is light and the specific gravity is small, and it can be used as a floating body.

[0045] It should be noted that the above-mentioned preferred embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It is not intended to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A composite column of fiber-reinforced plastic, characterized in that, It includes a core material, a rigid foamed plastic body, a resin, a reinforcing fiber member, and a structural layer. Multiple rigid foamed plastic bodies surround the core material and are spaced apart. There is a gap portion between adjacent rigid foamed plastic bodies. The reinforcing fiber member is disposed in the gap portion. The reinforcing fiber member extends separately along the surface of the rigid foamed plastic body and is integrally combined with the structural layer. The reinforcing fiber member is connected to the core material. The structural layer is disposed around the outside of the rigid foamed plastic body. The resin is filled in the gap portion. One reinforcing fiber member is provided on two adjacent rigid foamed plastic bodies. The rigid foamed plastic body includes a first side surface and a second side surface. The reinforcing fiber member is attached to the first side surface or the second side surface. The reinforcing fiber member is combined with the structural layer on the outer side surface. The rigid foamed plastic body includes an arc surface. Extension segments are provided at both ends of the reinforcing fiber member. The extension segments are respectively attached to the arc surfaces of adjacent rigid foamed plastic bodies and are integrated with the structural layer. Adjacent reinforcing fiber members are sewn to form a socket hole. The core material is inserted through the socket hole.

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