CN112920551B - Bionic resin-based carbon fiber composite material and preparation method thereof - Google Patents
Bionic resin-based carbon fiber composite material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a bionic resin-based carbon fiber composite material and a preparation method thereof, wherein the bionic resin-based carbon fiber composite material comprises the following components: a matrix resin; crimped carbon fibers located within the matrix resin; the crimped carbon fiber includes: carbon fibers; the corrugated layer is coated outside the carbon fibers and protrudes or is concave to the radial direction of the corrugated carbon fibers; wherein the gathered layer is formed by a pre-polymer comprising: a polyborosiloxane. The wrinkle layer is formed between the matrix resin and the carbon fiber, so that the friction force between the matrix resin and the wrinkle layer is increased, the toughness of the resin-based carbon fiber composite material is effectively improved, and the invasion of moisture or other harmful substances is prevented, thereby improving the humidity resistance, the heat resistance and the weather resistance of the resin-based carbon fiber composite material.
Description
Technical Field
The invention relates to the field of resin-based carbon fiber composite materials, in particular to a bionic resin-based carbon fiber composite material and a preparation method thereof.
Background
The resin-based carbon fiber composite material has the characteristics of light weight, high specific strength and specific modulus, good ductility, corrosion resistance, high temperature resistance, flexible preparation method and the like, and is widely applied to the fields of aerospace, military, automobiles, energy sources, medicine, sports and the like. It is worth noting that the interface of the resin-based carbon fiber composite material has important significance to the overall performance of the resin-based carbon fiber composite material, which is shown in the following aspects: 1. the full connection of the resin-based carbon fiber composite material interface can effectively transfer load, quickly transfer the load borne by the matrix with relatively weak comprehensive performance to the fiber reinforcement, and improve the overall strength of the material. 2. The resin-based carbon fiber composite material interface can influence the crack propagation direction and path to a certain extent, increase energy absorption and dissipation, and improve the overall toughness of the material. 3. The integral weather resistance of the composite material is directly influenced by the resin-based carbon fiber composite material interface layer. Therefore, how to improve the overall performance of the composite material by optimizing the structure and properties of the connecting interface between the carbon fiber and the resin (such as epoxy resin) is the focus of the research on the resin-based carbon fiber composite material.
At present, according to the difference of design main parts, the interface design of resin-based carbon fiber composite materials mainly comprises two directions: the design for the resin matrix and the design for the carbon fiber surface. The design aiming at the resin matrix is mainly to introduce rubber elastomers, inorganic rigid particles, hybrid particles, thermoplastic resin and the like into the resin for modification treatment; the design aiming at the surface of the carbon fiber is mainly to introduce oxygen-containing active groups into the surface of the carbon fiber and increase the surface roughness by oxidation treatment and plasma surface treatment, so that the connection performance of an interface between the carbon fiber and resin is improved.
The above methodThe method can improve the interface performance of the resin-based carbon fiber composite material to a certain extent, but has certain limitations: 1. in the design method aiming at the resin matrix, the introduced rubber elastomer, the inorganic rigid particles and the hybrid particles are easy to agglomerate, so that the system is not uniformly mixed, the viscosity of the matrix is greatly increased, the subsequent processing is difficult, and the toughening effect of the matrix is further influenced. Furthermore, the incorporated particles may cause the glass transition temperature (T) of the resin systemg) Decrease, affecting the thermal stability of the composite. 2. In the design method for the resin matrix, the introduction of the thermoplastic resin requires strict control of the resin content, the toughening effect is slightly insufficient, and the mechanical strength and heat resistance of the matrix are reduced. 3. The design method aiming at the surface of the carbon fiber inevitably causes mechanical damage and chemical corrosion to the performance of the carbon fiber, so that the strength of the whole composite material along the fiber direction is reduced. 4. The problem of moisture absorption and degradation of the resin-based carbon fiber composite material is also a key point which needs to be paid attention, and the methods do not mention improvement of the weather resistance of the resin-based carbon fiber composite material from the viewpoint of an interface. 5. In the prior art, thermoplastic resin can be introduced into a matrix material, and energy is absorbed through plastic deformation of thermoplastic resin particles, so that the overall toughness of the composite material is improved.
In conclusion, the composite material in the prior art cannot have good overall toughness and weather resistance.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The invention aims to solve the technical problem that the bionic resin-based carbon fiber composite material and the preparation method thereof are provided aiming at overcoming the defects in the prior art, and the problem that the composite material in the prior art cannot have good overall toughness and weather resistance is solved.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a bionic resin-based carbon fiber composite material, which comprises:
a matrix resin;
crimped carbon fibers located within the matrix resin; the crimped carbon fiber includes:
carbon fibers;
the corrugated layer is coated outside the carbon fibers and protrudes or is concave to the radial direction of the corrugated carbon fibers;
wherein the gathered layer is formed by a pre-polymer comprising: a polyborosiloxane.
The bionic resin-based carbon fiber composite material, wherein the prepolymer further comprises: a solubilizer obtained by reacting polyborosiloxane with a matrix resin.
The bionic resin-based carbon fiber composite material is characterized in that the corrugated layer is a corrugated layer with a hardness gradient.
The bionic resin-based carbon fiber composite material is characterized in that the height difference between the wave crests and the wave troughs of the corrugated layer is 1-2 μm; the distance between two adjacent wave crests in the corrugated layer is 1-2 μm.
A preparation method of a bionic resin-based carbon fiber composite material comprises the following steps:
providing carbon fibers, a prepolymer solution and a matrix resin; the prepolymer solution comprises: a polyborosiloxane and a solvent;
coating the prepolymer solution on the carbon fiber and drying to obtain impregnated carbon fiber;
pressing the prepolymer on the impregnated carbon fiber under stretching to obtain folded carbon fiber; the corrugated layer in the corrugated carbon fiber is protruded or recessed in the radial direction of the corrugated carbon fiber;
and preparing the bionic resin-based carbon fiber composite material by adopting the folded carbon fibers and the matrix resin.
The preparation method of the bionic resin-based carbon fiber composite material comprises the following steps of: and the solubilizer is obtained by heating and reacting polyborosiloxane and matrix resin.
The preparation method of the bionic resin-based carbon fiber composite material comprises the following steps: at least one of soaking, padding, spraying and brushing.
The preparation method of the bionic resin-based carbon fiber composite material comprises the following step of heating a compression roller, wherein the compression roller is a heating compression roller, and the heating compression roller enables the pre-polymer to form a heat gradient.
The preparation method of the bionic resin-based carbon fiber composite material is characterized in that the solvent is xylene; and/or the presence of a gas in the gas,
the providing of the carbon fiber, the prepolymer solution, and the matrix resin includes:
and obtaining original carbon fibers, and performing desizing treatment on the original carbon fibers to obtain the carbon fibers.
The preparation method of the bionic resin-based carbon fiber composite material comprises the following steps of:
weaving or presoaking the folded carbon fibers, and then putting the folded carbon fibers into a mold; the weaving includes: two-dimensional weaving and/or three-dimensional weaving;
and injecting the matrix resin into the mold, and curing to obtain the bionic resin-based carbon fiber composite material.
Has the advantages that: the wrinkle layer is formed between the matrix resin and the carbon fiber, so that the friction force between the matrix resin and the wrinkle layer is increased, the toughness of the resin-based carbon fiber composite material is effectively improved, and the invasion of moisture or other harmful substances is prevented, thereby improving the humidity resistance, the heat resistance and the weather resistance of the resin-based carbon fiber composite material.
Drawings
FIG. 1 is a schematic flow chart of the preparation of the biomimetic resin-based carbon fiber composite material in the invention.
FIG. 2 is a schematic view of a vacuum assisted molding process for preparing a composite material according to an embodiment of the present invention.
FIG. 3 is a schematic view of a resin transfer molding process for preparing a composite material according to an embodiment of the present invention.
FIG. 4 is a schematic view of a prepreg compression molding preparation process of the composite material in the embodiment of the invention.
FIG. 5 is a schematic view of the interface of the composite material of the present invention.
Description of reference numerals:
11. a prepolymer solution; 12. a gathered layer; 121. a hard layer; 122. a soft layer; 21. raw carbon fibers; 22. carbon fibers; 23. folding the carbon fiber; 24. folding the carbon fiber cloth; 25. pleating the fibrous body; 26. folding the prepreg; 31. a first biomimetic resin-based carbon fiber composite material; 32. a second bionic resin-based carbon fiber composite material; 33. a third bionic resin-based carbon fiber composite material; 41. a heating press roll device; 411. a floor structure; 412. an upper roll structure; 42. a fiber pre-stretcher; 43. vacuum bag film; 44. a vacuum draft tube; 45. a vacuum pump; 46. a traction roller; 47. a compression roller; 48. an oven; 49. release paper; 51. a matrix resin; 61. a resin transfer molding die; 62. performing compression molding on the prepreg to form a mold; 63. a resin solution tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-4, the present invention provides embodiments of a biomimetic resin-based carbon fiber composite.
The biological interface with natural law, fine structure and high performance generally exists in the nature, and provides an inexhaustible inspiration source for the development of new materials. In terms of interface morphology, inspired by the 'brick-mud' interface morphology formed by a nacre-layer brittle calcium carbonate mineral and a small amount of flexible polymer, researchers successfully prepare a macroscopic bulk nacre-like layer nanocomposite material (Matter 2019,1,412-427) with excellent comprehensive performance by using clay nano sheets. In terms of interface structure, inspired by the interface structure of a hard external impact area and an internal periodic stripe area of mantis shrimp pincers, a bionic composite material with strength, durability and impact resistance is developed (adv. Mater.2018,9,1705295). However, at present, researches on bionic collaborative design of a composite material from two aspects of an interface form and an interface structure aiming at a resin-based carbon fiber composite material are not common.
As shown in fig. 1 and 4, the bionic resin-based carbon fiber composite material of the invention comprises:
a matrix resin 51;
the corrugated layer 12 is coated outside the carbon fibers 22, and the corrugated layer 12 protrudes or is concave to the radial direction of the corrugated carbon fibers 23;
wherein the corrugated layer 12 is formed by a pre-polymer comprising: a polyborosiloxane.
It is worth to say that the invention develops a novel bionic collaborative design interface. The bionic cooperative design refers to that the design of the interface integrates two methods of form bionic and structure bionic, wherein the form bionic refers to that certain specific functions are realized by imitating the external form of a living being on the macroscopic form of the material, and the structure bionic refers to that certain specific functions are realized by performing bionic design on the surface structure of the material. Specifically, in the aspect of form bionics, the earthworm skin has a periodic fold form and can be used for increasing the friction force with soil in the movement process, and in addition, the soft body trunk is similar to the carbon fiber with a high length-diameter ratio in form, so the fold form of the earthworm skin is selected as a form bionics model. In the aspect of structural bionics, the resin-based carbon fiber composite material interface needs to bear complex and variable loads and also needs to play a role in load transfer, so that the strength of a part where the carbon fiber 22 is connected with resin is required to be high enough to achieve the purpose of load transfer, and enough toughness needs to be maintained to absorb energy, so that the function of protecting the interface is achieved.
In particular, slip-type fractures are one of the main fracture modes in composite delamination damage. Aiming at the slip fracture, the invention has good toughening effect. The specific principle is as follows: the corrugated layer 12 has good compatibility with the matrix resin 51, and the matrix resin forms mechanical occlusion after flowing into the corrugated groove and curing, thereby presenting an anchoring effect. Compared with the traditional mode that the resin matrix is directly contacted and cured with the surface of the carbon fiber, the wrinkled carbon fiber has an uneven rough surface, when the interface of the matrix resin 51 and the wrinkled layer 12 is subjected to slip-type fracture in the composite material, due to the existence of the wrinkled structure, the friction force between the matrix resin 51 and the wrinkled layer 12 is large, and the two phases can slide relatively by consuming more energy, so that the slip-type interlaminar fracture toughness is improved.
When the crack is expanded at the interface, the crack path can deflect due to the existence of the fold structure and finally expands in a wave manner, and the deflection of the crack path can increase energy dissipation so as to improve the toughening effect.
In addition, the moisture absorption of the conventional carbon fiber surface sizing agent can affect the damp and heat resistance of the composite material, so that the improvement of the interface state of the composite material is the key to improve the weather resistance of the composite material. The wrinkle layer 12 is a polymer formed by polyborosiloxane, so that the wrinkle layer 12 is a heat-resistant material and an antioxidant material, and is combined with the surface of a micro-nano structure with a groove shape, so that the wrinkle layer has excellent hydrophobic property, thereby preventing the invasion of moisture and other harmful media and improving the humidity resistance, heat resistance and weather resistance of the composite material.
In a preferred implementation of the embodiment of the present invention, since the degree of calcification of the bone is continuously reduced from outside to inside, and the bone shows an obvious gradient change, which is a typical strong and tough biomaterial, the present invention selects the mechanical property gradient of the bone as the structural bionic template. The wrinkle layer is a wrinkle layer with a hardness gradient.
The wrinkles have a hardness gradient, and are divided into a hard layer 121 on the surface and a soft layer 122 inside according to the hardness difference, compared with the solidified unmodified polyborosiloxane, an area with the hardness higher than that of the solidified unmodified polyborosiloxane is called the hard layer 121, an area with the hardness lower than that of the solidified unmodified polyborosiloxane is called the soft layer 122, the thickness of the hard layer is about 400-800 nm, and the hardness of the wrinkle layer 12 is reduced along with the increase of the depth. The unmodified polyborosiloxane after curing is obtained by heating pure polyborosiloxane, that is, pure polyborosiloxane without adding other reagents such as solubilizer, and is obtained by heating for curing, not by heating for curing by a press roller.
Specifically, the corrugated layer outside the carbon fiber 22 may be formed by processing, for example, by using a pressing roller, and the heating and pressing roller device 41 with a negative corrugated structure includes: the bottom plate structure 411 and the upper roller structure 412, and the bottom plate structure 411 and the upper roller structure 412 are respectively provided with a heating device. In the processing process of the press roll, since the heating part is concentrated on the contact part of the impregnated carbon fiber with the bottom plate structure 411 and the upper roll structure 412, the heat penetration into the prepolymer solution 11 is changed in a gradient manner, so that the prepolymer solution 11 is cross-linked in a gradient manner, that is, the cross-linking degree at different depths is different, and the hardness of the wrinkle layer 12 is also changed in a gradient manner. It can be understood that due to the thermal gradient, the prepolymer near the outer surface of the carbon fiber 22 is more easily activated and forms chemical bonds through chain polymerization, so that the prepolymer has higher hardness and is finally cured into the hard layer 121; in contrast, the interior of the prepolymer farther from the outer surface is finally cured to form the soft layer 122.
The bottom plate structure 411 and the upper roller structure 412 are respectively provided with a heating device and have adjustable intervals, the range of the adjustable interval S is 7-9 mu m, the negative structure is a groove with structural parameters, the range of the groove interval D is 1-2 mu m, and the range of the groove depth H is 0.5-1 mu m.
The soft layer 122 of the wrinkled layer 12 has the characteristics of low hardness and high elastic modulus, has certain energy absorption and energy storage effects on the load transmitted to the interface, further dissipates the energy causing crack propagation and interlayer failure, and has certain energy absorption and toughening effects.
In addition, when the corrugated layer is formed by the press roll, the impregnated carbon fibers need to be stretched first to fix the impregnated carbon fibers so as to press the roll. After the pressing by the pressing roller, since the carbon fibers 22 are released from the pre-stretched state, the pre-polymer solution 11 is gradually solidified to exhibit a wrinkle pattern in the following solidification process, and finally the wrinkled layer 12 having a wrinkle form is formed.
In a preferred implementation of the embodiment of the present invention, as shown in fig. 5, the height difference between the peaks and the valleys of the corrugated layer is 1-2 μm; the distance between two adjacent wave crests in the corrugated layer is 1-2 μm.
Specifically, compared with the prior art in which the resin matrix is directly contacted and cured with the surface of the carbon fiber, the height difference between the peaks and valleys of the surface groove structure is about 60-120 nm, which is obviously smaller than the wrinkle structure (about 1-2 μm) in the invention, so the invention has more prominent anchoring effect.
The corrugated carbon fiber 23 comprises an inner carbon fiber 22 and an outer corrugated layer 12, the thickness of the corrugated layer 12 is 1-2 μm, the corrugation is in a groove shape on the cross section along the length of the fiber, the distance between adjacent peaks is about 1-2 μm, and the height difference between the peaks and the valleys is about 1-2 μm.
In the prior art, the moisture absorption of the carbon fiber surface sizing agent can influence the damp and heat resistance of the composite material, so that the key for improving the interface state of the composite material is to improve the weather resistance of the composite material. The corrugated layer 12 is a heat-resistant material, and combines with a micro-nano structure surface with a groove shape (when the distance between adjacent peaks is about 1-2 μm, and the height difference between the peaks and the valleys is about 1-2 μm), so that the corrugated layer has excellent hydrophobic property, thereby preventing the invasion of moisture and other harmful media, and improving the humidity and heat resistance and the weather resistance of the composite material.
In a preferred implementation manner of the embodiment of the present invention, as shown in fig. 5, the prepolymer further includes: a solubilizer obtained by reacting polyborosiloxane with a matrix resin.
Specifically, the presence of the solubilizer in the prepolymer solution 11 makes it well compatible with the matrix resin 51. And the hard layer 121 of the wrinkle layer 12 and the cured matrix resin 51 are hard phases, so that the modulus matching is good, the load can be effectively transferred, and the overall performance of the composite material is improved.
The solubilizer adopts polyborosiloxane Precursor (PBS) to react with the resin matrix 51 at the temperature of 80 ℃ for 4h to prepare the polyborosiloxane modified epoxy resin.
The invention has the advantages that:
1. the bionic collaborative design interface absorbs energy by utilizing plastic deformation and elastic deformation at the interface, so that the toughness of the resin-based carbon fiber composite material is effectively improved.
2. The heat-resistant hydrophobic property of the bionic collaborative design interface can prevent the invasion of moisture or other harmful substances, thereby improving the heat and humidity resistance and the weather resistance of the resin-based carbon fiber composite material.
Based on the bionic resin-based carbon fiber composite material of any one of the embodiments, the invention also provides a preferred embodiment of the preparation method of the bionic resin-based carbon fiber composite material, which comprises the following steps:
as shown in fig. 1, the preparation method of the biomimetic resin-based carbon fiber composite material according to the embodiment of the present invention includes the following steps:
step S100, providing carbon fibers, a prepolymer solution and matrix resin; the prepolymer solution comprises: polyborosiloxane (PBS) and solvent.
Specifically, polyborosiloxane is dissolved in a solvent to obtain a prepolymer solution. The solvent is xylene. Of course, other solvents, such as toluene, etc., may also be employed. The prepolymer solution may also include a solubilizer to increase the solubility of the polyborosiloxane. The polyborosiloxane can also be dissolved by heating and stirring.
For example, the polyborosiloxane precursor is mixed with xylene, and a solubilizer is added, heated to 60 ℃ and stirred for 30min to prepare a prepolymer solution 11.
The prepolymer solution further comprises: and the solubilizer is obtained by heating and reacting polyborosiloxane and matrix resin.
Specifically, a polyborosiloxane Precursor (PBS) is adopted to react with the matrix resin 51 at 80 ℃ for 4h to prepare the polyborosiloxane modified epoxy resin. Due to the presence of the solubilizer in the prepolymer solution 11, it is well compatible with the matrix resin 51. And the hard layer 121 of the wrinkle layer 12 and the cured matrix resin 51 are hard phases, so that the modulus matching is good, the load can be effectively transferred, and the overall performance of the composite material is improved.
Step S100 specifically includes:
and S110, obtaining original carbon fibers, and performing desizing treatment on the original carbon fibers to obtain the carbon fibers.
Specifically, since the raw carbon fibers 21 are sized during the production process, in order to obtain pure carbon fibers 22, the raw carbon fibers 21 are subjected to a desizing treatment to obtain carbon fibers 22.
And step S200, coating the prepolymer solution on the carbon fiber and drying to obtain the impregnated carbon fiber.
Specifically, the above prepolymer solution 11 is applied to the carbon fiber 22 after the desizing treatment, and is dried at 50 ℃ for 1 hour. The coating is selected from: at least one of soaking, padding, spraying and brushing.
Step S300, pressing the prepolymer on the impregnated carbon fiber under stretching to obtain folded carbon fiber; the fold layers in the folded carbon fibers are protruded or recessed towards the radial direction of the folded carbon fibers.
Specifically, the compression roller is a heating compression roller, and the heating compression roller enables the pre-polymer to form a heat gradient. The impregnated carbon fibers of the above-mentioned impregnated prepolymer solution 11 are pre-stretched by a fiber pre-stretcher 42, so that the carbon fibers 22 are kept in a tensed state and placed in a heating and pressing roll device 41 with a negative structure of wrinkles to perform the wrinkle pre-forming. The crimped pre-formed impregnated carbon fibers were released from the pre-stretched state and left in an environment at 60 ℃ for 8h to form crimped carbon fibers 23.
The heating and pressing roller device 41 with the negative corrugation structure is provided with a bottom plate structure 411 and an upper roller structure 412, the bottom plate structure 411 and the upper roller structure 412 are respectively provided with a heating device, the distance between the bottom plate structure 411 and the upper roller structure 412 is adjustable, the range of the adjustable distance S is 7-9 mu m, the negative structure is a groove with structural parameters, the range of the groove distance D is 1-2 mu m, and the range of the groove depth H is 0.5-1 mu m.
And S400, preparing the bionic resin-based carbon fiber composite material by adopting the folded carbon fibers and the matrix resin.
Specifically, the wrinkled carbon fibers 23 are mixed with matrix resin 51, and the corresponding bionic resin-based carbon fiber composite material is obtained by composite material forming methods such as vacuum auxiliary forming, resin transfer molding, prepreg compression molding and the like.
Step S400 specifically includes:
step S410, weaving or presoaking the wrinkled carbon fiber, and then putting the wrinkled carbon fiber into a mold; the weaving includes: two-dimensional weaving and/or three-dimensional weaving.
And S420, injecting the matrix resin into the mold, and curing to obtain the bionic resin-based carbon fiber composite material.
Specifically, the pleated carbon fiber is woven in a two-dimensional weaving mode to obtain fiber cloth, the pleated carbon fiber is woven in a three-dimensional weaving mode to obtain a fiber body, and the pre-impregnated pleated carbon fiber is obtained by pre-impregnating the pleated carbon fiber in a pre-impregnating mode.
In a preferred implementation manner of the embodiment of the present invention, as shown in fig. 2, the pleated carbon fiber 23 obtained as described above is subjected to two-dimensional weaving to obtain a pleated carbon fiber cloth 24, and the weaving manner is not limited to unidirectional, plain, twill, satin; then, the carbon fiber cloth 24 is folded and put into the vacuum bag film 43; vacuumizing by using a vacuum pump 45, introducing the matrix resin 51 into the closed vacuum bag film 43 through a vacuum draft tube 44 under vacuum negative pressure, and fully soaking the reinforcing material to continuously maintain higher vacuum degree; and finally, curing at room temperature to obtain the first bionic resin-based carbon fiber composite material 31.
In a preferred implementation manner of the embodiment of the present invention, the obtained folded carbon fiber 23 is three-dimensionally woven to obtain a folded fiber body 25, and the structure of the folded fiber body 25 is not limited according to actual needs; laying the pleated fibrous body 25 in the resin transfer molding die 61; and in a certain pressure range, matrix resin 51 is injected into the closed mold cavity by adopting injection equipment, and the second bionic resin-based carbon fiber composite material 32 is obtained by infiltrating and curing the matrix resin 51 and the folded fiber body 25.
In a preferred implementation of the embodiment of the present invention, as shown in fig. 3, the wrinkled carbon fibers 23 are sequentially passed through a resin solution tank 63 and an oven 48 by a drawing roll 46; then, under the action of a press roller 47, the folded prepreg 26 is formed by compounding with release paper 49; then, laminating the folded prepreg 26, placing the laminated prepreg between prepreg compression molding dies 62, closing the dies and applying pressure; and (3) completely curing and shaping the resin through high-temperature and high-pressure treatment for a certain time to finally prepare the third bionic resin-based carbon fiber composite material 33.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (6)
1. The bionic resin-based carbon fiber composite material is characterized by comprising the following components in percentage by weight:
a matrix resin;
crimped carbon fibers located within the matrix resin; the crimped carbon fiber includes:
carbon fibers;
the corrugated layer is coated outside the carbon fibers and protrudes or is concave to the radial direction of the corrugated carbon fibers;
wherein the gathered layer is formed by a pre-polymer comprising: a polyborosiloxane; the prepolymer further comprises: the solubilizer is obtained by reacting polyborosiloxane with matrix resin; the fold layer is a fold layer with a hardness gradient; the height difference between the wave crests and the wave troughs of the corrugated layer is 1-2 μm; the distance between two adjacent wave crests in the corrugated layer is 1-2 μm.
2. A method for preparing the biomimetic resin-based carbon fiber composite material as in claim 1, comprising the steps of:
providing carbon fibers, a prepolymer solution and a matrix resin; the prepolymer solution comprises: a polyborosiloxane and a solvent;
coating the prepolymer solution on the carbon fiber and drying to obtain impregnated carbon fiber;
pressing the prepolymer on the impregnated carbon fiber under stretching to obtain folded carbon fiber; the corrugated layer in the corrugated carbon fiber is protruded or recessed in the radial direction of the corrugated carbon fiber;
preparing a bionic resin-based carbon fiber composite material by adopting the folded carbon fibers and the matrix resin;
the prepolymer solution further comprises: the solubilizer is obtained by heating and reacting polyborosiloxane and matrix resin; the fold layer is a fold layer with a hardness gradient; the height difference between the wave crests and the wave troughs of the corrugated layer is 1-2 μm; the distance between two adjacent wave crests in the corrugated layer is 1-2 μm.
3. The method for preparing the biomimetic resin-based carbon fiber composite material according to claim 2, wherein the coating is selected from the group consisting of: at least one of soaking, padding, spraying and brushing.
4. The preparation method of the bionic resin-based carbon fiber composite material as claimed in claim 2, wherein the compression roller is a heating compression roller, and the heating compression roller enables the pre-polymer to form a heat gradient.
5. The method for preparing the biomimetic resin-based carbon fiber composite material as recited in claim 2, wherein the solvent is xylene; and/or the presence of a gas in the gas,
the providing of the carbon fiber, the prepolymer solution, and the matrix resin includes:
and obtaining original carbon fibers, and performing desizing treatment on the original carbon fibers to obtain the carbon fibers.
6. The method for preparing the bionic resin-based carbon fiber composite material according to claim 2, wherein the step of preparing the bionic resin-based carbon fiber composite material by adopting the folded carbon fibers and the matrix resin comprises the following steps:
weaving or presoaking the folded carbon fibers, and then putting the folded carbon fibers into a mold; the weaving includes: two-dimensional weaving and/or three-dimensional weaving;
and injecting the matrix resin into the mold, and curing to obtain the bionic resin-based carbon fiber composite material.
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| JPH03193673A (en) * | 1989-12-21 | 1991-08-23 | Ntn Corp | Carbon fiber-ceramic composite material |
| CN106240126B (en) * | 2016-07-29 | 2018-09-07 | 沈阳理工大学 | Polyborosiloxane-carbon fiber fabric swatch and its dissolving dipping hot pressing the preparation method |
| CN106240041B (en) * | 2016-07-29 | 2018-06-01 | 沈阳理工大学 | Polyborosiloxane-carbon cloth composite plate and its powder hot pressing the preparation method |
| CN106182803B (en) * | 2016-07-29 | 2018-11-02 | 沈阳理工大学 | Polyborosiloxane-carbon cloth composite plate and its melt impregnation hot pressing the preparation method |
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