CN112280294A - Fiber-reinforced bionic composite material based on centrifugal molding method and preparation method thereof - Google Patents
Fiber-reinforced bionic composite material based on centrifugal molding method and preparation method thereof Download PDFInfo
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- CN112280294A CN112280294A CN202011252679.5A CN202011252679A CN112280294A CN 112280294 A CN112280294 A CN 112280294A CN 202011252679 A CN202011252679 A CN 202011252679A CN 112280294 A CN112280294 A CN 112280294A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/046—Reinforcing macromolecular compounds with loose or coherent fibrous material with synthetic macromolecular fibrous material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino carboxylic acids or of polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
Abstract
The invention discloses a fiber-reinforced bionic composite material based on a centrifugal die pressing method and a preparation method thereof. According to the fiber-reinforced bionic composite material based on the centrifugal die pressing method and the preparation method thereof, the physical and mechanical properties of the composite material can be effectively improved by utilizing the advantages of Kevlar fibers, particularly, the strength of the composite material is further improved by adopting the arrangement layout mode of simulated roots and a special pressing and forming method of centrifugal die pressing, so that the composite material has the characteristics of high strength, corrosion resistance, high and low temperature resistance and the like.
Description
Technical Field
The invention relates to the technical field of bionic composite materials, in particular to a fiber reinforced bionic composite material based on a centrifugal die pressing method and a preparation method thereof.
Background
In nature, various organisms have developed biological structures with their own characteristics and excellent properties after undergoing long-term evolution in order to adapt to their living environments. In recent years, scientists inspire from biocomposites in nature, and introduce concepts of "biomimetic design" and "fiber morphology design" in material design. The root system structure is a universal and special bionic structure, is an optimized structure evolved by most animals and plants according to the requirements of material transmission efficiency and nutrition supply, and is characterized in that the trunk is connected with a plurality of branches which are mutually staggered, so that the interaction of force between the root system and between the root system and soil is tighter, and the impact of external force can be borne better.
At present, the research direction of domestic composite materials is mostly developed towards the direction of reinforcing the characteristics of the fiber and the coupling agent, and certain mechanical characteristics of the fiber still have larger development space. Compared with a common straight fiber structure, the root system structure has better interface binding force and bearing capacity, and the root system imitating structure is applied to weaving of fiber bundles, so that the mechanical property of the bionic fiber composite material can be effectively improved.
Kevlar fiber is a brand name of an aramid fiber material produced by DuPont company in the last 60 th century, is a high-performance synthetic fiber, and is widely applied to the fields of aerospace, military and the like due to the characteristics of permanent heat resistance, flame retardance, permanent antistatic property, high strength, high wear resistance, high tear resistance, acid and alkali resistance and the like; the research work about Kevlar fiber shows high academic frontier and simultaneously shows good practical value and application potential in application fields of high-strength structural materials, energy, environmental protection, special protection and the like.
Centrifugal force is a virtual force, an inertial force, which moves a rotating object away from its center of rotation, and has been widely used in various fields. The Kevlar fiber reinforced bionic composite material is pressed by a centrifugal die pressing method, compared with a common pressing method, the Kevlar fiber reinforced bionic composite material is more uniform in stress, the compression strength and the shear strength of the material are improved by 3% -5% compared with those of the material which is pressed by the common die pressing method, and the service life of the material is prolonged.
Disclosure of Invention
The invention aims to: the fiber-reinforced bionic composite material based on the centrifugal die pressing method and the preparation method thereof are provided, and the bionic composite material has higher strength compared with a common pressing method and longer service life through the special pressing forming method of the centrifugal die pressing and the special simulated root system structure design, and can exert more excellent mechanical bearing effect compared with the traditional composite material.
In order to achieve the above object, the technical solution adopted by the present invention to solve the technical problem is as follows:
a fiber-reinforced bionic composite material based on a centrifugal mould pressing method is characterized in that Kevlar fibers are wound on the surface of a carbon fiber bundle, meanwhile, the carbon fiber bundle is twisted and reinforced, finally, the carbon fiber bundle and the Kevlar fibers are arranged into a fiber bundle in a root-like structure and are mixed with an aqueous epoxy resin emulsion to form jet flow, and the jet flow is formed through centrifugal mould pressing.
The carbon fiber bundle is woven by 5-10 carbon fibers, wherein the weaving lift angle is controlled to be 5-50 degrees, and the error of the spiral lift angle measured every 80-150 mm of the fibers is not more than 5 degrees.
The carbon fiber bundle and the Kevlar fiber are arranged according to the following ratio of 1: (5-10) and winding at a winding angle of 30-60 degrees.
The diameter of the carbon fiber monofilament is controlled to be 6-9 mu m, the diameter of the Kevlar fiber monofilament is controlled to be 10-13 mu m, and finally a fiber bundle with the diameter of 5-10mm is manufactured.
When the Kevlar fiber is wound, the axial distance between the next section of Kevlar fiber and the previous section of Kevlar fiber is 90-150 mu m.
The content ratio of the fiber bundles to the waterborne epoxy resin emulsion is 5 (0.8-1.2).
The water-based epoxy resin emulsion is prepared by heating, stirring and emulsifying epoxy resin and a composite emulsifier with the mass fraction of 3.0-4.5%, wherein the polyoxyethylene octyl phenol ether-10 and sodium dodecyl sulfate in the composite emulsifier are as follows (2.5-4): 1 in proportion.
The aqueous epoxy resin emulsion is prepared by the following method: putting epoxy resin and a composite emulsifier with the mass fraction of 3.0-4.5% into a heating container for stirring, wherein the polyoxyethylene octyl phenol ether-10 and the sodium dodecyl sulfate in the composite emulsifier are as follows (2.5-4): 1, the heating temperature is 70-85 ℃, the stirring speed is 1500-2000 r/min, and the stirring time is 10-15 min; adding 75-170 ml of deionized water in the stirring process, and continuously emulsifying for 50-100 min; adding the ammonium persulfate treated by the deionized water as an initiator into the pre-emulsion for 2.5-5 h, continuously reacting for 50-100 min, and filtering to obtain the waterborne epoxy resin emulsion.
The jet flow is sprayed out by a spray head, the spray speed of the spray head is 0.5-1 m/s, the spray angle is 3-45 degrees, the spray head is sprayed into a die cavity on the heating inner wall of the high-speed centrifugal die pressing device by moving up and down, wherein the moving speed of the spray head is 0.01-0.03 m/s, the rotating radius of the heating inner wall is 0.3-0.5 m, the rotating speed is 25-30 r/s, and the heating temperature is 110-160 ℃.
The invention also provides a preparation method of the fiber reinforced bionic composite material based on the centrifugal mould pressing method, which comprises the following steps:
first step, preparing aqueous epoxy resin emulsion
50 g-100 g of epoxy resin and 3.0% -4.5% of composite emulsifier by mass are put into a heating container for stirring, wherein the polyoxyethylene octyl phenol ether-10 and the sodium dodecyl sulfate in the composite emulsifier are as follows (2.5-4): 1, the heating temperature is 70-85 ℃, the stirring speed is 1500-2000 r/min, and the stirring time is 10-15 min; adding 75-170 ml of deionized water in the stirring process, and continuously emulsifying for 50-100 min; adding ammonium persulfate treated by deionized water as an initiator into the pre-emulsion for 2.5-5 h, continuously reacting for 50-100 min, and filtering to obtain the water-based epoxy resin emulsion;
step two, weaving fiber bundles:
weaving 5-10 carbon fibers by using a fiber bundle weaving machine, wherein the weaving lift angle is controlled to be 5-50 degrees, and the error of the spiral lift angle measured by the fibers every 80-150 mm is ensured not to exceed 5 degrees, namely the integral angle of the fibers is ensured to be uniform;
thirdly, winding fibers:
winding and weaving Kevlar fibers on the surface of a carbon fiber bundle according to a winding angle of 30-60 degrees, wherein the carbon fiber bundle and the Kevlar fibers are wound and woven according to the following weight ratio of 1: (5-10), controlling the diameter of the carbon fiber monofilament to be 6-9 μm, and controlling the diameter of the Kevlar fiber monofilament to be 10-13 μm, and finally preparing a fiber bundle with the diameter of 5-10 mm;
fourthly, obtaining an imitated root system structure:
when the next section of Kevlar fiber is wound, the axial distance between the next section of Kevlar fiber and the previous section of Kevlar fiber is 90-150 mu m, and the fiber bundle is twisted and reinforced while being wound, so that the final carbon fiber bundle and the Kevlar fiber are arranged in a root-like structure;
fifthly, forming jet flow:
the carbon fiber bundle and Kevlar fiber are mixed with aqueous epoxy resin emulsion while being wound to form jet flow, wherein the content ratio of the carbon fiber bundle to the resin is 5 (0.8-1.2);
sixthly, performing centrifugal die pressing:
the jet flow is sprayed out by a spray head, the spray speed of the spray head is 0.5-1 m/s, the spray angle is 3-45 degrees, the spray head is sprayed into a die cavity on the heating inner wall of the high-speed centrifugal die pressing device by moving up and down, wherein the moving speed of the spray head is 0.01-0.03 m/s, the rotating radius of the heating inner wall is 0.3-0.5 m, the rotating speed is 25-30 r/s, and the heating temperature is 110-160 ℃;
seventh step, demoulding and shearing:
and cooling the composite material in the mold cavity after the composite material is molded, demolding and shearing, wherein the whole fiber weaving and material molding and cooling process is finished in a vacuum environment.
Compared with the prior art, the invention has the beneficial effects that:
according to the fiber-reinforced bionic composite material based on the centrifugal die pressing method and the preparation method thereof, the physical and mechanical properties of the composite material can be effectively improved by utilizing the advantages of Kevlar fibers, particularly, the strength of the composite material is further improved by adopting the arrangement layout mode of simulated roots and a special pressing and forming method of centrifugal die pressing, so that the composite material has the characteristics of high strength, corrosion resistance, high and low temperature resistance and the like.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of a fiber-reinforced biomimetic composite material based on a centrifugal molding method according to an embodiment of the present invention.
Description of reference numerals:
1. carbon fiber bundles; 2. kevlar fibers.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
The invention provides a fiber reinforced bionic composite material based on a centrifugal mould pressing method and a preparation method thereof, wherein the specific implementation method comprises the following steps:
firstly, the method comprises the following steps: 50g of epoxy resin and 3.0 percent of composite emulsifier are put into a heating container to be stirred, wherein the weight percentage of polyoxyethylene octyl phenol ether-10 and sodium dodecyl sulfate in the composite emulsifier is 2.5: 1, heating at 70 ℃, stirring at 1500r/min for 10 min; adding 75ml of deionized water during stirring, and continuously emulsifying for 50 min; adding the ammonium persulfate treated by the deionized water into the pre-emulsion as an initiator for 2.5h, continuing to react for 50min, and filtering to obtain the waterborne epoxy resin emulsion.
II, secondly: weaving 8 carbon fibers by using a fiber bundle weaving machine, wherein the weaving lift angle is controlled at 30 degrees, and the error of the spiral lift angle measured every 100mm of the fibers is ensured not to exceed 3 degrees, namely the integral angle of the fibers is ensured to be uniform;
thirdly, the method comprises the following steps: winding and weaving Kevlar fibers on the surface of a carbon fiber bundle according to a winding angle of 45 degrees, wherein the carbon fiber bundle and the Kevlar fibers are wound and woven according to the following weight ratio of 1: 7, controlling the diameter of the carbon fiber monofilament to be 8 mu m, controlling the diameter of the Kevlar fiber monofilament to be 11 mu m, and finally preparing a plurality of fiber bundles with the diameter of 8 mm.
Fourthly, the method comprises the following steps: the axial distance between the Kevlar fibers in the next section of Kevlar fiber winding process and the previous section of Kevlar fiber winding process is controlled to be 110 mu m, the fiber bundle is twisted and reinforced while winding, and the length of the Kevlar fibers is short, so that the carbon fiber bundle 1 and the Kevlar fibers 2 are finally arranged in a root-like structure. As shown in fig. 1.
Fifthly: the carbon fiber bundles and the Kevlar fibers are mixed with the aqueous epoxy resin emulsion while being wound to form jet flow, wherein the content ratio of the carbon fiber bundles to the resin is 5:1.
Sixthly, the method comprises the following steps: the jet flow is sprayed out by a spray head, the spray speed of the spray head is 0.7m/s, the spray angle is 30 degrees, the spray head is sprayed into a die cavity on the heating inner wall of the high-speed centrifugal die pressing device by moving up and down, wherein the moving speed of the spray head is 0.01m/s, the rotating radius of the heating inner wall is 0.5m, the rotating speed is 25r/s, and the heating temperature is 130 ℃.
Seventhly, the method comprises the following steps: and cooling the composite material in the mold cavity after the composite material is molded, demolding and shearing, wherein the whole fiber weaving and material molding and cooling process is finished in a vacuum environment.
Eighthly: the tensile test was performed on the composite sample, and the results showed that: the tensile strength of the composite material is 2970Mpa, and the fluctuation range of data obtained by performing tensile tests on the composite material at different angles is less than 5%; the tensile strength of the common carbon fiber composite material is 2000-2400Mpa, but when the common carbon fiber composite material is subjected to tensile tests at different angles, the fluctuation range of the obtained data is large, the minimum value is in the tangential direction of the composite material, the obtained tensile strength value is only 500MP, and the obtained test result shows that the fiber reinforced bionic composite material based on the centrifugal die pressing method is superior to the common carbon fiber composite material in multi-direction stress.
Example 2
The invention provides a fiber reinforced bionic composite material based on a centrifugal mould pressing method and a preparation method thereof, wherein the specific implementation method comprises the following steps:
firstly, the method comprises the following steps: 60g of epoxy resin and 3.5% of composite emulsifier by mass are put into a heating container to be stirred, wherein the weight ratio of polyoxyethylene octyl phenol ether-10 to sodium dodecyl sulfate in the composite emulsifier is 3: 1, heating at 80 ℃, stirring at 1500r/min for 10 min; adding 80ml of deionized water during stirring, and continuously emulsifying for 65 min; adding the ammonium persulfate treated by the deionized water into the pre-emulsion as an initiator for 2.5h, continuing to react for 55min, and filtering to obtain the waterborne epoxy resin emulsion.
II, secondly: weaving 10 carbon fibers by using a fiber bundle weaving machine, wherein the weaving lift angle is controlled at 50 degrees, and the error of the spiral lift angle measured every 80mm of the fibers is ensured not to exceed 3 degrees, namely the integral angle of the fibers is ensured to be uniform;
thirdly, the method comprises the following steps: winding and weaving Kevlar fibers on the surface of a carbon fiber bundle according to a winding angle of 30 degrees, wherein the carbon fiber bundle and the Kevlar fibers are wound and woven according to the following weight ratio of 1: 5, controlling the diameter of the carbon fiber monofilament to be 6 mu m, controlling the diameter of the Kevlar fiber monofilament to be 10 mu m, and finally preparing a plurality of 5mm fiber bundles.
Fourthly, the method comprises the following steps: the axial distance between the Kevlar fibers in the next section of Kevlar fiber winding process and the previous section of Kevlar fiber is controlled to be 90 mu m, the fiber bundle is twisted and reinforced while winding, and the length of the Kevlar fibers is short, so that the carbon fiber bundle and the Kevlar fibers are finally arranged in a root-like structure.
Fifthly: the carbon fiber bundles and the Kevlar fibers are mixed with the aqueous epoxy resin emulsion while being wound to form jet flow, wherein the content ratio of the carbon fiber bundles to the resin is 5: 0.8.
Sixthly, the method comprises the following steps: the jet flow is sprayed out by a spray head, the spray speed of the spray head is 0.5m/s, the spray angle is 3 degrees, the spray head is sprayed into a die cavity on the heating inner wall of the high-speed centrifugal die pressing device by moving up and down, wherein the moving speed of the spray head is 0.01m/s, the rotating radius of the heating inner wall is 0.5m, the rotating speed is 30r/s, and the heating temperature is 110 ℃.
Seventhly, the method comprises the following steps: and cooling the composite material in the mold cavity after the composite material is molded, demolding and shearing, wherein the whole fiber weaving and material molding and cooling process is finished in a vacuum environment.
Eighthly, tensile tests were carried out on the composite samples, and the results were similar to those of example 1.
Example 3
The invention provides a fiber reinforced bionic composite material based on a centrifugal mould pressing method and a preparation method thereof, wherein the specific implementation method comprises the following steps:
firstly, the method comprises the following steps: putting 90g of epoxy resin and a composite emulsifier with the mass fraction of 4.5% into a heating container for stirring, wherein the weight ratio of polyoxyethylene octyl phenol ether-10 and sodium dodecyl sulfate in the composite emulsifier is 4: 1, heating at 85 ℃, stirring at 2000r/min for 15 min; adding 170ml of deionized water during stirring, and continuously emulsifying for 100 min; adding the ammonium persulfate treated by the deionized water into the pre-emulsion as an initiator for 5h, continuing to react for 100min, and filtering to obtain the waterborne epoxy resin emulsion.
II, secondly: weaving 5 carbon fibers by using a fiber bundle weaving machine, wherein the weaving lift angle is controlled at 5 degrees, and the error of the spiral lift angle measured every 150mm of the fibers is ensured not to exceed 5 degrees, namely the integral angle of the fibers is ensured to be uniform;
thirdly, the method comprises the following steps: winding and weaving Kevlar fibers on the surface of a carbon fiber bundle according to a winding angle of 60 degrees, wherein the carbon fiber bundle and the Kevlar fibers are wound and woven according to the following weight ratio of 1: 10, controlling the diameter of the carbon fiber monofilament to be 9 mu m and the diameter of the Kevlar fiber monofilament to be 13 mu m, and finally preparing a plurality of 10mm fiber bundles.
Fourthly, the method comprises the following steps: the axial distance between the Kevlar fibers in the next section of Kevlar fiber winding process and the previous section of Kevlar fiber is controlled to be 150 mu m, the fiber bundle is twisted and reinforced while winding, and the length of the Kevlar fiber is short, so that the carbon fiber bundle and the Kevlar fiber are finally arranged in a root-like structure.
Fifthly: the carbon fiber bundles and the Kevlar fibers are mixed with the aqueous epoxy resin emulsion while being wound to form jet flow, wherein the content ratio of the carbon fiber bundles to the resin is 5: 1.2.
Sixthly, the method comprises the following steps: the jet flow is sprayed out by a spray head, the spray speed of the spray head is 1m/s, the spray angle is 45 degrees, the spray head is sprayed into a die cavity on the heating inner wall of the high-speed centrifugal die pressing device by moving up and down, wherein the moving speed of the spray head is 0.03m/s, the rotating radius of the heating inner wall is 0.3m, the rotating speed is 25r/s, and the heating temperature is 160 ℃.
Seventhly, the method comprises the following steps: and cooling the composite material in the mold cavity after the composite material is molded, demolding and shearing, wherein the whole fiber weaving and material molding and cooling process is finished in a vacuum environment.
Eighthly, tensile tests were carried out on the composite samples, and the results were similar to those of example 1.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (10)
1. A fiber-reinforced bionic composite material based on a centrifugal die pressing method is characterized in that Kevlar fibers are wound on the surface of a carbon fiber bundle, the carbon fiber bundle is twisted and reinforced, finally the carbon fiber bundle and the Kevlar fibers are arranged into a fiber bundle in a root-like structure and mixed with aqueous epoxy resin emulsion to form jet flow, and the jet flow is formed through a centrifugal die pressing method.
2. The fiber-reinforced biomimetic composite material based on the centrifugal die pressing method according to claim 1, characterized in that the carbon fiber bundle is woven by 5-10 carbon fibers, wherein the weaving lift angle is controlled at 5-50 degrees, and the error of the lift angle measured every 80-150 mm of the fibers is not more than 5 degrees.
3. The fiber-reinforced biomimetic composite material based on the centrifugal molding method according to claim 1, wherein the carbon fiber bundles and the Kevlar fibers are arranged in a ratio of 1: (5-10) and winding at a winding angle of 30-60 degrees.
4. The fiber-reinforced biomimetic composite material based on the centrifugal molding method as claimed in claim 2, wherein the diameter of the carbon fiber monofilament is controlled to be 6 μm to 9 μm, the diameter of the Kevlar fiber monofilament is controlled to be 10 μm to 13 μm, and finally 5mm to 10mm fiber bundles are manufactured.
5. The fiber-reinforced biomimetic composite material based on the centrifugal molding method according to claim 1, wherein the axial distance between the next section of Kevlar fiber and the previous section of Kevlar fiber is 90-150 μm when the Kevlar fiber is wound.
6. The fiber-reinforced biomimetic composite material based on the centrifugal molding method according to claim 1, wherein the content ratio of the fiber bundles to the aqueous epoxy resin emulsion is 5 (0.8-1.2).
7. The fiber-reinforced biomimetic composite material based on the centrifugal molding method as claimed in claim 1, wherein the aqueous epoxy resin emulsion is prepared by heating, stirring and emulsifying epoxy resin and 3.0-4.5 wt% of a composite emulsifier, wherein the polyoxyethylene octyl phenol ether-10 and sodium dodecyl sulfate in the composite emulsifier are in a ratio of (2.5-4): 1 in proportion.
8. The fiber reinforced biomimetic composite based on the centrifugal molding method of claim 1, wherein the aqueous epoxy resin emulsion is prepared by the following method: putting epoxy resin and a composite emulsifier with the mass fraction of 3.0-4.5% into a heating container for stirring, wherein the polyoxyethylene octyl phenol ether-10 and the sodium dodecyl sulfate in the composite emulsifier are as follows (2.5-4): 1, the heating temperature is 70-85 ℃, the stirring speed is 1500-2000 r/min, and the stirring time is 10-15 min; adding 75-170 ml of deionized water in the stirring process, and continuously emulsifying for 50-100 min; adding the ammonium persulfate treated by the deionized water as an initiator into the pre-emulsion for 2.5-5 h, continuously reacting for 50-100 min, and filtering to obtain the waterborne epoxy resin emulsion.
9. The fiber reinforced bionic composite material based on the centrifugal molding method according to claim 1, wherein the jet flow is ejected through a nozzle, the nozzle ejection speed is 0.5 m/s-1 m/s, the ejection angle is 3-45 degrees, the nozzle is ejected in a mold cavity on a heating inner wall of a high-speed centrifugal molding device by moving up and down, wherein the nozzle movement speed is 0.01 m/s-0.03 m/s, the heating inner wall rotation radius is 0.3 m-0.5 m, the rotation speed is 25 r/s-30 r/s, and the heating temperature is 110-160 ℃.
10. The preparation method of the fiber reinforced biomimetic composite material based on the centrifugal molding method as claimed in claim 1, characterized by comprising the following steps:
first step, preparing aqueous epoxy resin emulsion
50 g-100 g of epoxy resin and 3.0% -4.5% of composite emulsifier by mass are put into a heating container for stirring, wherein the polyoxyethylene octyl phenol ether-10 and the sodium dodecyl sulfate in the composite emulsifier are as follows (2.5-4): 1, the heating temperature is 70-85 ℃, the stirring speed is 1500-2000 r/min, and the stirring time is 10-15 min; adding 75-170 ml of deionized water in the stirring process, and continuously emulsifying for 50-100 min; adding ammonium persulfate treated by deionized water as an initiator into the pre-emulsion for 2.5-5 h, continuously reacting for 50-100 min, and filtering to obtain the water-based epoxy resin emulsion;
step two, weaving fiber bundles:
weaving 5-10 carbon fibers by using a fiber bundle weaving machine, wherein the weaving lift angle is controlled to be 5-50 degrees, and the error of the spiral lift angle measured by the fibers every 80-150 mm is ensured not to exceed 5 degrees, namely the integral angle of the fibers is ensured to be uniform;
thirdly, winding fibers:
winding and weaving Kevlar fibers on the surface of a carbon fiber bundle according to a winding angle of 30-60 degrees, wherein the carbon fiber bundle and the Kevlar fibers are wound and woven according to the following weight ratio of 1: (5-10), controlling the diameter of the carbon fiber monofilament to be 6-9 μm, and controlling the diameter of the Kevlar fiber monofilament to be 10-13 μm, and finally preparing a fiber bundle with the diameter of 5-10 mm;
fourthly, obtaining an imitated root system structure:
when the next section of Kevlar fiber is wound, the axial distance between the next section of Kevlar fiber and the previous section of Kevlar fiber is 90-150 mu m, and the fiber bundle is twisted and reinforced while being wound, so that the final carbon fiber bundle and the Kevlar fiber are arranged in a root-like structure;
fifthly, forming jet flow:
the carbon fiber bundle and Kevlar fiber are mixed with aqueous epoxy resin emulsion while being wound to form jet flow, wherein the content ratio of the carbon fiber bundle to the resin is 5 (0.8-1.2);
sixthly, performing centrifugal die pressing:
the jet flow is sprayed out by a spray head, the spray speed of the spray head is 0.5-1 m/s, the spray angle is 3-45 degrees, the spray head is sprayed into a die cavity on the heating inner wall of the high-speed centrifugal die pressing device by moving up and down, wherein the moving speed of the spray head is 0.01-0.03 m/s, the rotating radius of the heating inner wall is 0.3-0.5 m, the rotating speed is 25-30 r/s, and the heating temperature is 110-160 ℃;
seventh step, demoulding and shearing:
and cooling the composite material in the mold cavity after the composite material is molded, demolding and shearing, wherein the whole fiber weaving and material molding and cooling process is finished in a vacuum environment.
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| CN101718037A (en) * | 2009-12-10 | 2010-06-02 | 哈尔滨工业大学 | Preparation method of root-like carbon nanotube grafting carbon fiber reinforcement |
| CN103194173A (en) * | 2013-04-09 | 2013-07-10 | 吉林大学 | Bionic-braking friction material and preparation method thereof |
| CN203269853U (en) * | 2013-04-09 | 2013-11-06 | 吉林大学 | Bionic braking friction material |
| US20190344496A1 (en) * | 2016-12-20 | 2019-11-14 | 3M Innovative Properties Company | Composition including fluoropolymer and inorganic filler and method of making a three-dimensional article |
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| CN101718037A (en) * | 2009-12-10 | 2010-06-02 | 哈尔滨工业大学 | Preparation method of root-like carbon nanotube grafting carbon fiber reinforcement |
| CN103194173A (en) * | 2013-04-09 | 2013-07-10 | 吉林大学 | Bionic-braking friction material and preparation method thereof |
| CN203269853U (en) * | 2013-04-09 | 2013-11-06 | 吉林大学 | Bionic braking friction material |
| US20190344496A1 (en) * | 2016-12-20 | 2019-11-14 | 3M Innovative Properties Company | Composition including fluoropolymer and inorganic filler and method of making a three-dimensional article |
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