CN211194994U

CN211194994U - Carbon fiber prepreg

Info

Publication number: CN211194994U
Application number: CN201922069232.3U
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: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-08-07
Anticipated expiration: 2029-11-27

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 is woven by warps and wefts; every warp uses per two carbon fiber yarn as a set ofly, and every weft includes ceramic fiber yarn and two metal fiber yarns, and two metal fiber yarn twines on the surface of ceramic fiber yarn, and warp and weft set up according to following mode: during weaving, warp threads are firstly lifted, then weft threads are woven, then warp threads are lifted, then weft threads are woven, and repeated circulation is carried out in sequence, and finally a continuous carbon fiber mixed layer is formed; the distance between every two adjacent warps is equal, the distance between every two adjacent wefts is equal, and the distance between every two adjacent warps is equal to the distance between every two adjacent wefts; the two epoxy resin layers are formed by soaking the carbon fiber mixing layer in epoxy resin glue. The utility model discloses both improved the intensity of preimpregnation material, had the requirement of fire behavior again concurrently, the function is various.

Description

Carbon fiber prepreg

Technical Field

The utility model relates to a preimpregnation material technical field, especially a 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 quantity more than 70% of carbon fiber all is realized through the application mode of carbon fiber prepreg, no matter be space 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 give full play to the superhigh strength nature of carbon fiber, all make unidirectional fiber's prepreg with the carbon fiber and make various products, and this kind of prepreg that only radial fiber does not have latitudinal direction fibre has many defects: 1. the warp strength is high, and the weft strength is low; 2. the breadth is easy to crack when in use, and the operation is inconvenient; 3. quality hidden troubles such as wrinkles, gaps and the like are easy to appear after the layers are laid.

The utility model discloses a chinese utility model patent that publication number is CN202115057U discloses CF net piece intensive carbon fiber prepreg, and CF net piece intensive prepreg includes one-way carbon fiber layer, CF net piece, upper rubber film and lower floor's glued membrane, CF net piece pressfitting on one-way carbon fiber layer, CF net piece above be the upper rubber film, lower floor's glued membrane is below one-way carbon fiber layer, produces CF net piece intensive carbon fiber prepreg through processes such as system glued membrane, put silk row yarn, pressfitting net piece, trial run, normal operating production. The method changes the current situation that the unidirectional prepreg has high warp strength and low weft strength, even has no weft strength, and can improve the transverse strength of the prepreg by 20 percent and improve the transverse strength of the composite material by more than 20 percent. However, the prepreg described above increases the density of the carbon fibers to increase the strength in the weft direction, and in some special cases, it is not necessary to have high strength in the weft direction, but some other performance requirements are required.

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 preimpregnation material has both improved the intensity of preimpregnation material, has the requirement of fire behavior again concurrently, and the function is various.

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 woven by warps and wefts; every warp uses per two carbon fiber yarns as a set, and every weft includes ceramic fiber yarn and two metal fiber yarns, two metal fiber yarn twines on the surface of ceramic fiber yarn, warp and weft set up according to following mode: during weaving, warp threads are firstly lifted, then weft threads are woven, then warp threads are lifted, then weft threads are woven, and repeated circulation is carried out in sequence, and finally a continuous carbon fiber mixed layer is formed; the distance between every two adjacent warps is equal, the distance between every two adjacent wefts is equal, and the distance between every two adjacent warps is equal to the distance between every two adjacent wefts;

the two epoxy resin layers are formed by infiltrating the carbon fiber mixing layer into epoxy resin glue, and are arranged on the outer surface of the carbon fiber mixing layer.

Preferably, a plurality of arc-shaped protruding strips are arranged on the outer surfaces of the two epoxy resin layers at equal intervals.

Preferably, after the warp and the weft are woven to form the carbon fiber mixed layer, the formed meshes are approximately square, and the single-side size of the meshes is 50-200 μm.

Preferably, transparent plastic package plastic covers are arranged at the edges of two sides of the carbon fiber prepreg.

Preferably, the filament diameters of the single carbon fiber yarn and the ceramic fiber yarn are both 50-100 μm and are equal.

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

(1) the carbon fiber mixed layer has the performance of carbon fibers and the fireproof effect of ceramic fibers, so that the performance of the prepreg is obviously improved, and the prepreg has multiple functions;

(2) each warp takes two carbon fiber yarns as a group, the performance of carbon fibers in the carbon fiber prepreg is enhanced, and the ceramic fiber yarns are wound with two metal fiber yarns, so that the strength is enhanced, and the ceramic fiber yarns play a role in fire prevention;

(3) the smoothness is good.

Drawings

FIG. 1 is a schematic structural view of a single warp yarn;

FIG. 2 is a schematic view of the structure of a single weft;

FIG. 3 is an enlarged view of a portion of the two metal fiber yarns of FIG. 2 wound around a ceramic fiber yarn;

fig. 4 is a front view of the carbon fiber mixed layer;

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

FIG. 6 is a schematic structural view of a carbon fiber hybrid layer;

fig. 7 is a schematic structural diagram of a carbon fiber prepreg of the present invention.

Detailed Description

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

As shown in fig. 1 to 7, a carbon fiber prepreg includes a carbon fiber mixed layer and two epoxy resin layers 5;

the carbon fiber mixed layer is woven by warps 1 and wefts; every warp 1 takes per two carbon fiber yarns 2 as a set, every weft includes ceramic fiber yarn 3 and two metal fiber yarns 4, two metal fiber yarns 4 twine on the surface of ceramic fiber yarn 3, warp 1 and weft set up according to following mode: during weaving, warp threads are firstly lifted, then weft threads are woven, then warp threads are lifted, then weft threads are woven, and repeated circulation is carried out in sequence, and finally a continuous carbon fiber mixed layer is formed; each warp 1 takes two carbon fiber yarns 2 as a group, so that the performance of carbon fibers in the carbon fiber prepreg is enhanced; meanwhile, two metal fiber yarns 4 are wound on the ceramic fiber yarns 3, so that the strength is enhanced, and the ceramic fiber yarns 3 play a role in fire prevention; the distances between the adjacent warps 1 are equal, the distances between the adjacent wefts are equal, and the distance between the adjacent warps 1 is equal to the distance between the adjacent wefts; can ensure the flatness of the carbon fiber mixed layer

The two epoxy resin layers 5 are formed by infiltrating the carbon fiber mixing layer in epoxy resin glue, and are arranged on the outer surface of the carbon fiber mixing layer.

In order to further enhance the surface strength of the carbon fiber prepreg, a plurality of arc-shaped protruding strips 6 are arranged on the outer surfaces of the two epoxy resin layers 5 at equal intervals.

After the warp and the weft are woven to form the carbon fiber mixing layer, the formed meshes are approximately square, the single side size of each mesh is 50-200 mu m, the uniform structure of the prepreg is ensured, and the performance difference of each part of the final prepreg is not large.

The edges of the two sides of the carbon fiber prepreg are provided with transparent plastic package plastic covers 7, so that the two sides of the carbon fiber prepreg are protected, and scratching is prevented.

In order to further ensure the flatness of the carbon fiber prepreg, the diameters of the single carbon fiber yarn 2 and the ceramic fiber yarn 3 are both 50-100 μm and are equal to each other.

TABLE 1 does the utility model discloses an under the condition in different silk footpaths, aperture, the tensile force condition of carbon fiber preimpregnation material and the product contrast among the prior art

Therefore, the utility model provides a carbon fiber prepreg is for the prepreg of the same specification, and its tensile property is showing and is improving

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 a plurality of arc-shaped raised strips are arranged on the outer surfaces of the two epoxy resin layers at equal intervals.

3. The carbon fiber prepreg according to claim 1, wherein the warp and the weft are woven to form a carbon fiber mixed layer, and the formed mesh is approximately square, and the size of one side of the mesh is 50 μm to 200 μm.

4. The carbon fiber prepreg according to claim 1, wherein transparent plastic cover is arranged at two side edges of the carbon fiber prepreg.

5. The carbon fiber prepreg according to claim 1, wherein the individual carbon fiber yarns and the ceramic fiber yarns each have a filament diameter of 50 μm to 100 μm and are equal to each other.