CN217863168U - Carbon fiber composite material structure, aerospace vehicle part and automobile part - Google Patents

Abstract

The utility model provides a carbon-fibre composite structure, aerospace vehicle spare part and automobile parts, include: the substrate layer, the transmission layer, the protective layer and the enhancement layer; a transmission layer and a protective layer are arranged between the substrate layer and the enhancement layer, the transmission layer is connected with the substrate layer, and the protective layer is connected with the enhancement layer; the protective layer is made of a water-based epoxy emulsion sizing agent, and the reinforcing layer is made of carbon fibers. The application constructs a rigid-flexible structure on the surface of the carbon fiber, and realizes the carbon fiber composite material structure with high toughness and high strength.

Description

Carbon fiber composite material structure, aerospace vehicle part and automobile part

Technical Field

The utility model relates to a combined material structure field specifically relates to carbon-fibre composite structure, aerospace vehicle spare part and automobile parts.

Background

The carbon fiber reinforced resin matrix composite material is an excellent material for manufacturing aerospace, automobile parts, integral products and other high and new equipment due to excellent specific strength and specific modulus. In all matrices of carbon fiber reinforced composite materials, epoxy resin is widely applied to composite materials such as adhesives, chemical corrosion resistant coatings, electrical insulating materials, glass fiber reinforced plastics, carbon fibers and the like by virtue of good molding manufacturability, performance stability of cured products, and good corrosion resistance and chemical property. However, the epoxy resin has a highly crosslinked structure, so that the defects of brittleness, poor heat resistance, poor impact toughness and the like exist, so that the carbon fiber reinforced resin composite material is easy to generate interlayer defects in the using process, and the application of the carbon fiber reinforced resin composite material is limited to a certain extent.

The polydicyclopentadiene is a novel green high-molecular engineering plastic, is light in weight and excellent in comprehensive performance, particularly has the characteristics of high modulus, high impact strength, high creep resistance and the like, and has a more obvious high-toughness effect compared with epoxy resin. However, the carbon fiber composite material has poor adaptability with the carbon fibers sold on the market, and the load transmission efficiency between the matrix resin and the reinforcing fibers is low, so that the performance advantage of the carbon fiber composite material with the matrix cannot be exerted. Therefore, the problem of adaptability of polydicyclopentadiene and carbon fibers needs to be solved, and a carbon fiber composite material structure with high toughness and high strength is realized. The current prior art references are as follows:

patent document CN102107535a relates to a method for preparing a carbon fiber reinforced resin matrix composite structural member, which comprises the following steps: (1) Preparing a micro-diameter carbon fiber rod with the diameter of 0.3mm to 0.5mm by using a pultrusion process; (2) Implanting carbon fibers into the foam carrier by using a numerical control implanter according to the designed direction and distribution density; (3) Guiding the micro-diameter carbon fiber rod from the foam carrier into a resin matrix composite prepreg blank by using ultrasonic auxiliary implantation equipment, wherein the volume ratio of the carbon fiber rod to the resin matrix composite is 0.44-3.14%; (4) And (3) removing foams, and co-curing the micro-diameter carbon fiber rods and the prepreg blank to obtain the multidirectional reinforced resin matrix composite co-cured member.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a carbon-fibre composite structure, aerospace vehicle spare part and automobile parts.

According to the utility model provides a pair of carbon-fibre composite structure, include: the substrate layer, the transmission layer, the protective layer and the enhancement layer;

a transmission layer and a protective layer are arranged between the substrate layer and the enhancement layer, the transmission layer is connected with the substrate layer, and the protective layer is connected with the enhancement layer;

the protective layer is made of a water-based epoxy emulsion sizing agent, and the reinforcing layer is made of carbon fibers;

in the process of damaging the composite material, the base material layer is subjected to plastic deformation firstly, the structure is in a ductile fracture mode, and the load is further transmitted to the reinforcing layer through the transmission layer and the protective layer in sequence until the reinforcing layer is subjected to fracture failure. The protective layer and the base material layer cannot realize good interface combination, so that the transmission layer acts as a bridge and can well realize final transmission of force between the base material layer and the reinforcing layer.

Preferably, the protective layer is 1.0% -1.5% of the mass of the reinforcing layer.

Preferably, the transfer layer is 3% -5% of the mass of the reinforcing layer.

Preferably, the base material layer is 40% -60% of the mass of the reinforcing layer.

Preferably, the carbon fiber composite material structure can be used for aerospace vehicle parts and automobile parts.

Compared with the prior art, the utility model discloses following beneficial effect has:

this application solves the problem that carbon fiber reinforced resin combined material produced defect between the layer easily in the use through transfer layer and protective layer, realizes having the carbon fiber composite structure of high tenacity and high strength concurrently.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural diagram of a carbon fiber composite material;

FIG. 2 is a schematic structural diagram of a carbon fiber composite material (II);

shown in the figure:

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. All of which belong to the protection scope of the present invention.

Example 1

As shown in fig. 1 and 2, the present embodiment includes: a substrate layer 1, a transmission layer 2, a protection layer 3 and a reinforcing layer 4; set up transfer layer 2 and protective layer 3 between substrate layer 1 and the enhancement layer 4, transfer layer 2 connects substrate layer 1, and reinforcing layer 4 is connected to protective layer 3, and substrate layer 1 adopts polydicyclopentadiene, and transfer layer 2 adopts anhydride class curing agent solidification bisphenol A type epoxy, and protective layer 3 adopts waterborne epoxy class emulsion sizing agent, and reinforcing layer 4 adopts the carbon fiber. The protective layer 3 accounts for 1.0-1.5% of the mass of the reinforcing layer 4, the transmission layer 2 accounts for 3-5% of the mass of the reinforcing layer 4, and the base material layer 1 accounts for 40-60% of the mass of the reinforcing layer.

The embodiment can be used for preparing plates by pultrusion of wind power blades, plates by RTM (resin transfer molding) technology for protecting new energy automobile battery boxes and box-shaped parts by compression molding of air drop.

Example 2

Example 2 is a preferred example of example 1.

As shown in fig. 1 and fig. 2, the technical problem to be solved by the present embodiment is to construct a rigid-flexible structure on the surface of a carbon fiber that has been commercialized, so as to realize a carbon fiber composite structure having both high toughness and high strength.

The embodiment comprises the following steps: a substrate layer 1, a transmission layer 2, a protection layer 3 and a reinforcing layer 4; the protective layer 3 is 1.5% by mass of the reinforcing layer 4, the transmission layer 2 is 3% by mass of the reinforcing layer 4, and the base layer 1 is 50% by mass of the reinforcing layer 4.

The substrate layer 1 is polydicyclopentadiene and has high impact toughness; the transfer layer 2 is phthalic anhydride cured bisphenol A epoxy resin with an epoxy value of 0.51, and the bonding of the transfer layer 2 and the substrate layer 1 promotes the mutual permeation of the transfer layer and the substrate layer to form a new interface by means of high temperature and high pressure in the composite material forming process. The protective layer 3 is aqueous epoxy resin emulsion, the enhancement layer 4 is carbon fiber, the transfer layer 2 is a new coating formed outside the protective layer 3 by a secondary sizing process, and the base material layer 1 is high-toughness polydicyclopentadiene resin loaded on the surface of the transfer layer 2 by a composite material forming process such as vacuum-assisted infusion forming and wet die pressing. The adhesion of the protective layer 3 and the transfer layer 2 is achieved by co-curing under the action of an anhydride curing agent by virtue of epoxy groups on both the protective layer 3 and the transfer layer 2.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the essential spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (3)

1. A carbon fiber composite structure, comprising: the protective layer comprises a base material layer (1), a transmission layer (2), a protective layer (3) and an enhancement layer (4);

a transmission layer (2) and a protective layer (3) are arranged between the substrate layer (1) and the enhancement layer (4), the transmission layer (2) is connected with the substrate layer (1), and the protective layer (3) is connected with the enhancement layer (4);

the base material layer (1) adopts polydicyclopentadiene, the transfer layer (2) adopts anhydride curing agent to cure bisphenol A type epoxy resin, the protective layer (3) adopts waterborne epoxy emulsion sizing agent, and the enhancement layer (4) adopts carbon fiber.

2. An aerospace vehicle component, comprising: the aerospace vehicle component part is of a carbon fiber composite structure as claimed in claim 1.

3. An automobile part characterized in that: the automobile part adopts the carbon fiber composite material structure of claim 1.

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