CN211165633U

CN211165633U - Carbon fiber prepreg

Info

Publication number: CN211165633U
Application number: CN201922066221.XU
Authority: CN
Inventors: 金芃; 滕家荣
Original assignee: Yangzhou Weirong New Material Co ltd
Current assignee: Yangzhou Weirong New Material Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-08-04
Anticipated expiration: 2029-11-26

Abstract

The utility model relates to a carbon fiber prepreg, which comprises a carbon fiber mixing layer and two epoxy resin layers; the carbon fiber mixed layer comprises the carbon fiber layer that two-layer symmetry set up, and the carbon fiber layer is weavingd by warp and weft and forms, and warp and weft set up according to following mode: when weaving, firstly lifting warp threads, then weaving weft threads, then lifting another adjacent warp thread, then weaving weft threads, repeating the cycle in sequence, finally forming a continuous carbon fiber layer warp thread to form continuous concave parts and convex parts in the weaving process, wherein metal fiber yarns are arranged on two sides of the concave parts on the two symmetrically arranged carbon fiber layers, and the same sides of the symmetrical concave parts on the two symmetrically arranged carbon fiber layers are connected in series by the same metal fiber yarn; the two epoxy resin layers are formed on the upper surface and the lower surface of the carbon fiber mixing layer by infiltrating the carbon fiber mixing layer. The utility model provides a carbon fiber mixes layer and is formed by two-layer carbon fiber layer combination, and combines firmly.

Description

Carbon fiber prepreg

Technical Field

The utility model relates to a preimpregnation material technical field, especially carbon fiber preimpregnation material.

Background

With the continuous development of the scientific and technical level and the strong demand of the social and economic development, carbon fibers are highly concerned by various countries in the world with a series of comprehensive excellent properties such as high specific strength, high specific modulus, corrosion resistance, fatigue resistance, light weight, electric conduction, heat insulation, high temperature resistance and the like, and the carbon fibers are widely applied to the military and civil fields such as aviation, aerospace, vehicle manufacturing, ship industry, wind power generation, electronic communication, medical appliances, cultural and sports leisure equipment and the like. At present, the application mode of carbon fiber prepreg is realized through carbon fiber prepreg to the quantity more than 70%, no matter be space flight equipment, sports and leisure equipment etc. still large-scale wind power generation blade, fields such as medical equipment, sports and leisure equipment, in order to make full use of the superhigh intensity nature of carbon fiber, all make the carbon fiber into the prepreg of unidirectional fibre and make various products.

The utility model discloses a chinese utility model patent that publication number is CN209274085U discloses a fire-retardant carbon fiber sheet, include the carbon fiber prepreg layer of the epoxy sheet layer and both sides as middle sandwich layer, be provided with the strengthening rib on the both sides face of epoxy sheet layer, epoxy sheet layer surface covering has nanometer montmorillonite flame retardant layer, and epoxy sheet layer still has the carbon fiber woven cloth preimpregnation material of coiling outward. The flame-retardant carbon fiber sheet has good impact resistance and good flame retardance. However, in some special occasions, the prepreg is required to have strong tensile strength, the strength of a single layer of carbon fiber cannot meet the requirement, and if two layers of carbon fibers are arranged on the prepreg, how to effectively combine the carbon fibers is not disclosed in the prior art.

In view of the above problems, it is desirable to provide a carbon fiber prepreg.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a carbon fiber prepreg, carbon fiber mixed layer are formed by two-layer carbon fiber layer combination, and combine firmly, have effectively improved carbon fiber prepreg's performance.

In order to achieve the purpose of the utility model, the carbon fiber prepreg comprises a carbon fiber mixing layer and two epoxy resin layers;

the carbon fiber mixed layer is composed of two layers of carbon fiber layers which are symmetrically arranged, the carbon fiber layers are formed by weaving warps and wefts, the warps and the wefts are carbon fiber yarns, and the warps and the wefts are arranged according to the following mode: during weaving, the warp threads are lifted, then the weft threads are woven, then the other adjacent warp thread is lifted, then the weft threads are woven, and repeated circulation is carried out in sequence, and finally a continuous carbon fiber layer is formed; the warp forms continuous concave parts and convex parts in the weaving process, metal fiber yarns are arranged on two sides of the concave parts on the two symmetrically arranged carbon fiber layers, and the same sides of the symmetrical concave parts on the two symmetrically arranged carbon fiber layers are connected in series by the same metal fiber yarn;

the two epoxy resin layers are formed on the upper surface and the lower surface of the carbon fiber mixing layer by infiltrating the carbon fiber mixing layer.

Preferably, the tandem positions of the two metal fiber yarns in the same recess are located at different ends of the weft yarn in the same recess, respectively.

Preferably, the surfaces of the two epoxy resin layers are both provided with a silica wear-resistant layer.

Preferably, the distance between adjacent warp threads on the carbon fiber layer is equal, the distance between adjacent weft threads is equal, and the distance between adjacent warp threads is equal to the distance between adjacent weft threads.

Preferably, meshes formed by the carbon fiber layers formed by weaving the warp and the weft are approximately square, and the unilateral size of the meshes is 50-200 μm.

Preferably, a layer of binder is disposed between the two carbon fiber layers.

The utility model discloses a carbon fiber preimpregnation material compares with prior art and has following advantage:

(1) the carbon fiber mixing layer is formed by connecting two symmetrically arranged carbon fiber layers in series through metal fiber yarns, and the serial parts of the two metal fiber yarns on the same concave part are respectively positioned at different ends of the weft in the same concave part, so that the connection firmness is effectively ensured, and the performance of the carbon fiber prepreg is effectively enhanced;

(2) the surfaces of the two epoxy resin layers are respectively provided with the silicon dioxide wear-resistant layer, so that the wear resistance of the surface of the carbon fiber prepreg is improved, and the service life of the carbon fiber prepreg is prolonged;

(3) simple structure and good performance.

Drawings

FIG. 1 is a schematic structural view of a carbon fiber layer;

FIG. 2 is an enlarged view of a portion of the warp and weft knitting of FIG. 1;

FIG. 3 is a schematic structural view of a carbon fiber hybrid layer;

FIG. 4 is a partial enlarged view of the metal fiber yarn of FIG. 3 connecting two carbon fiber layers in series;

FIG. 5 is a side view of a carbon fiber hybrid layer;

fig. 6 is a left side view of the carbon fiber mixed layer;

FIG. 7 is an enlarged partial view of the metal fiber yarn tandem of FIG. 6;

FIG. 8 is a top view of a carbon fiber hybrid layer;

fig. 9 is a schematic view of the layered structure of the carbon fiber prepreg.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 9, the carbon fiber prepreg includes a carbon fiber mixed layer 4 and two epoxy resin layers 8;

the carbon fiber mixed layer 4 comprises carbon fiber layer 1 that two-layer symmetry set up, carbon fiber layer 1 is weavingd by warp 3 and weft 2 and forms, warp 3 and weft 2 are the carbon fiber yarn, warp 3 and weft 2 set up according to following mode: during weaving, the warp 3 is firstly lifted, then the weft 2 is penetrated for weaving, then the other adjacent warp 3 is lifted, then the weft 3 is penetrated for weaving, and the repeated circulation is carried out in sequence, and finally a continuous carbon fiber layer 1 is formed; the warp 3 forms continuous concave parts 7 and convex parts 6 in the weaving process, metal fiber yarns 5 are arranged on two sides of the concave parts 7 on the two layers of the carbon fiber layers 1 which are symmetrically arranged, the same sides of the symmetrical concave parts 7 on the two layers of the carbon fiber layers 1 which are symmetrically arranged are connected in series through the same metal fiber yarn 5, and the serial parts of the two metal fiber yarns 5 on the same concave part 7 are respectively positioned at different end parts of the weft 2 in the same concave part 7; by the arrangement, the equal connection performance of the two ends of the inner weft 2 of the carbon fiber mixing layer 4 is ensured, and the two carbon fiber layers 1 are firmly connected;

the two epoxy resin layers 8 are formed on the upper and lower surfaces of the carbon fiber mixed layer by impregnating the carbon fiber mixed layer 4.

In order to improve the wear resistance of the surface of the carbon fiber prepreg, a silica wear-resistant layer 9 is arranged on each of the surfaces of the two epoxy resin layers 8.

In order to ensure the surface smoothness of the carbon fiber mixed layer 4, the distances between the adjacent warp yarns 3 on the carbon fiber layer 1 are equal, the distances between the adjacent weft yarns 2 are equal, and the distances between the adjacent warp yarns 3 are equal to the distances between the adjacent weft yarns 2.

In order to further ensure the surface smoothness of the carbon fiber mixed layer 4, meshes formed by the carbon fiber layer formed by weaving the warp 3 and the weft 2 are approximately square, and the unilateral size of the meshes is 50-200 μm.

In order to further improve the bonding strength of the two carbon fiber layers 1, a layer of adhesive is arranged between the two carbon fiber layers 1.

In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.

In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The carbon fiber prepreg is characterized by comprising a carbon fiber mixing layer and two epoxy resin layers;

2. The carbon fiber prepreg according to claim 1, wherein the two metal fiber yarns in series in the same depression are located at different ends of the weft in the same depression.

3. The carbon fiber prepreg according to claim 1, wherein the surfaces of the two epoxy resin layers are provided with a silica abrasion resistant layer.

4. The carbon fiber prepreg according to claim 1, wherein a pitch between adjacent warp threads on the carbon fiber layer is equal, a pitch between adjacent weft threads is equal, and a pitch between adjacent warp threads is equal to a pitch between adjacent weft threads.

5. The carbon fiber prepreg according to claim 4, wherein a mesh formed by the carbon fiber layer in which the warp and the weft are woven is approximately square, and a single side size of the mesh is 50 μm to 200 μm.

6. The carbon fiber prepreg according to claim 1, wherein a layer of binder is provided between two carbon fiber layers.