Nanocellulose-based high-strength carbon fiber-reinforced polymer composite and method for manufacturing same

Abstract

The present invention relates to a nanocellulose-based high-strength carbon fiber-reinforced polymer composite and a method for manufacturing same and, specifically, to a nanocellulose-based high-strength carbon fiber-reinforced polymer composite, infused with a thermosetting resin containing dispersed nanocellulose to simultaneously enhance strength and lightweight characteristics, and to a method for manufacturing same. The present invention provides the effects of significantly improving tensile strength and impact resistance of a composite by effectively inhibiting crack formation and uniformly distributing stress within the composite. Furthermore, by achieving a weight reduction compared to conventional metallic materials, the present invention can improve the fuel economy and energy efficiency of transportation means, such as automobiles and aerospace vehicles.

Description

Nanocellulose-based high-strength carbon fiber reinforced polymer composite and method for manufacturing the same

[0001] The present invention relates to a nanocellulose-based high-strength carbon fiber reinforced polymer composite and a method for manufacturing the same. Specifically, it relates to a nanocellulose-based high-strength carbon fiber reinforced polymer composite in which a thermosetting resin in which nanocellulose is dispersed is injected to simultaneously improve high strength and lightweight properties, and a method for manufacturing the same.

[0002] As regulations to reduce carbon emissions tighten globally, batteries are establishing themselves as a key power source replacing internal combustion engines in next-generation transportation. In particular, the importance of lightweighting technology is being highlighted as the weight of batteries accounts for a significant portion of the total vehicle weight in battery-powered vehicles. To achieve lightweighting in transportation, a transition to new materials capable of weight reduction while maintaining the mechanical properties of existing metals is essential. Specifically, there is a need for alternative materials that satisfy the mechanical properties of steel products, which are currently primarily used for the interior and exterior components of vehicles.

[0003] Recently, with the advancement of composite materials, Carbon Fiber Reinforced Polymers (CFRP), which possess high strength and lightweight properties, are emerging as a promising material to meet these demands. CFRP is lighter than iron or aluminum and does not rust or corrode like metal. Additionally, it has the advantage of not oxidizing even when exposed to seawater or air. Due to these characteristics, CFRP is widely applied not only in the aerospace sector but also in automobiles, where steel products are heavily utilized, and the CFRP market size is continuously growing.

[0004] Carbon fibers in CFRP are typically classified into three types based on their raw materials (precursors). These include PAN-based carbon fibers, rayon-based carbon fibers, and pitch-based carbon fibers, among which PAN-based carbon fibers are the most widely used. PAN-based carbon fibers are produced by heating polyacrylonitrile (PAN, C3H3N) compounds. PAN-based carbon fibers are made from propylene (C3H3N), a petrochemical product. ６ Polyacrylonitrile fibers obtained by polymerizing and spinning polyacrylonitrile extracted from ) are subjected to flame resistance at a temperature of 200 to 300°C, then carbonized again at a temperature of 1000 to 1500°C in an inert gas (argon) atmosphere, and finally graphitized at 2500 to 3000°C to produce carbon fibers.

[0005] Meanwhile, nanocellulose has recently been attracting attention for its high strength and lightweight properties. Nanocellulose possesses high tensile strength (up to 250 GPa) and tensile modulus (130 to 250 GPa), providing more than eight times the strength of stainless steel at the same weight. Additionally, with a density of 1.6 g / cm³, it is significantly lighter than the density of steel (approximately 7.8 g / cm³), giving it great potential as a lightweight material. In particular, cellulose nanofiber (CNF), a type of nanocellulose, is primarily extracted from natural resources such as wood pulp or seaweed and has a nano-sized fiber structure composed of D-glucose units linked by β-1,4 bonds. CNF is generally manufactured by mechanical processing. However, since wood or non-wood biomass, which serves as the raw material for CNF, forms a rigid structure by combining substances such as hemicellulose and lignin in addition to cellulose, various pretreatment methods have been proposed to efficiently crush these structures. The most commercially available method is the use of a high-pressure homogenizer. When cellulose fibers are mixed with distilled water to create a suspension at a content of 1 to 2 wt% and then homogenized using a high-pressure homogenizer, the fibers rapidly pass through thin slits due to the high pressure, receiving large shear and impact forces, and are separated into nano-sized fibers.

[0006] The inventors completed the present invention by confirming that a CFRP composite material injected with CNF-dispersed epoxy resin can improve tensile strength and simultaneously further enhance lightweight performance.

[0007] The problem to be solved by the present invention is to provide a nanocellulose-based carbon fiber reinforced polymer injected with a thermosetting resin in which nanocellulose is dispersed, and a method for manufacturing the same.

[0008] To solve the above problem, the present invention provides a nanocellulose-based carbon fiber reinforced polymer composite material injected with a thermosetting resin in which nanocellulose is dispersed.

[0009] The above nanocellulose may be cellulose nanofibers.

[0010] The above nanocellulose can be mixed and dispersed in an amount of 0.4 to 1.0 wt% based on the above thermosetting resin.

[0011] The carbon fiber may be one or more weave forms selected from the group consisting of plain weave, twill weave, knit weave, braid weave, non-weave, satin weave, and warp sating weave.

[0012] The above thermosetting resin may be one or more selected from the group consisting of epoxy resin, polyester resin, vinyl ester resin, phenolic resin, polyurethane resin, and silicone resin.

[0013] The above composite material may have improved high strength and lightweight performance simultaneously.

[0014] In addition, the present invention provides a method for manufacturing a nanocellulose-based carbon fiber reinforced polymer composite, comprising the steps of: manufacturing a carbon fiber laminate; mixing and dispersing nanocellulose in a thermosetting resin to prepare a mixture; injecting the mixture into the carbon fiber laminate; and curing.

[0015] The above carbon fiber laminate may be laminated in the order of a release film, carbon fiber, peel ply, and mesh flow.

[0016] After the step of manufacturing the carbon fiber laminate, the method may further include the step of vacuum sealing after forming the mixture inlet / outlet.

[0017] The present invention produces a carbon fiber reinforced polymer by adding cellulose nanofibers, which effectively suppresses cracking within the composite and uniformly distributes stress, thereby significantly improving the tensile strength and impact resistance of the composite. These characteristics help maintain structural stability when the composite is subjected to external loads or impacts. Furthermore, the present invention achieves weight reduction compared to conventional metal materials, thereby improving fuel efficiency and energy efficiency in vehicles such as automobiles and aerospace. In particular, it can be importantly utilized to reduce the weight of structural components in battery-based electric vehicles and next-generation modes of transportation.

[0018] Figure 1 shows a photograph of CNF powder and CFRP raw material according to one embodiment.

[0019] Figure 2 shows a schematic diagram of the process for manufacturing a CNF-based CFRP plate according to one embodiment.

[0020] FIG. 3 shows the lamination components and lamination sequence used in the CFRP plate manufacturing process according to one embodiment.

[0021] Figure 4 shows an overall flowchart of the CNF-based CFRP plate manufacturing process according to one embodiment.

[0022] FIG. 5 shows photographs of CNF-based CFRP specimens fabricated according to one embodiment. a) is a plain weave, and b) is a twill weave.

[0023] Figure 6 shows comparative data of tensile strength (plain weave and twill weave) according to CNF content in one embodiment.

[0024] Figure 7 shows comparative data of stroke (plain weave and twill weave) by CNF constant weight according to one embodiment.

[0025] The terminology used in this specification is used to appropriately describe preferred embodiments of the present invention and may vary according to conventions in the field to which the present invention belongs. Accordingly, the definitions of these terms should be based on the content throughout this specification.

[0026] The present invention experimentally confirmed that a carbon fiber reinforced polymer (CFRP) composite material injected with epoxy resin dispersed with cellulose nanofibers can simultaneously improve tensile strength and lightweight performance.

[0027] Accordingly, in one aspect, the present invention relates to a nanocellulose-based CFRP composite material injected with a thermosetting resin in which nanocellulose is dispersed.

[0028] In this invention, the term "nanocellulose" refers to a material in which the microstructure of cellulose molecules is broken down to the nanometer scale. Nanocellulose possesses a high surface area and strength, making it suitable for use as a reinforcing material in composites, and it is particularly gaining attention as an environmentally friendly material.

[0029] The nanocellulose of the present invention may be cellulose nanofiber (CNF), cellulose microfiber, bacterial cellulose, cellulose microwhisker, cellulose nanowhisker, cellulose microfiber, pulp, rice husk, etc. Additionally, the CNF may include forms extracted from various raw materials. Specifically, it may be one or more selected from the group consisting of seaweed-based CNF, wood-based CNF, CNF surface-modified with carboxyl groups, cellulose nanocrystals, and acetylated CNF. Such nanofibers provide excellent mechanical performance when manufacturing composites and can realize durability and lightweighting.

[0030] The term "impregnation" in the present invention generally refers to the process in which a material permeates or penetrates another material, and is primarily used to describe the process of combining two or more materials. For example, in CFRP, "impregnation" refers to the process in which carbon fibers are combined with a polymer resin or other material to form a composite material.

[0031] In the present invention, a thermosetting resin may be used as the impregnation resin. Specifically, the thermosetting resin may be one or more selected from the group consisting of epoxy resin, polyester resin, vinyl ester resin, phenolic resin, polyurethane resin, and silicone resin, and each resin may be selected according to the application purpose of its characteristics. For example, epoxy resin is suitable for manufacturing composites due to its high adhesion and durability, polyester resin has excellent moldability, and vinyl ester resin can be effectively used in environments requiring chemical resistance and heat resistance. In addition, phenolic resin is a resin that provides high heat resistance and chemical resistance, and is particularly suitable for composites requiring stability in high-temperature environments; polyurethane resin has excellent high strength and wear resistance and also possesses flexibility, so it can be used in some special application fields; and silicone resin has very high heat resistance, so it can be used in composites that exhibit excellent performance in high-temperature environments. In one embodiment of the present invention, epoxy resin was used as the thermosetting resin.

[0032] In addition, in the present invention, the nanocellulose may be included in an amount of 0.4 to 1.0 wt% based on the thermosetting resin, and preferably in an amount of 0.4 to 0.8 wt%. If the nanocellulose is included in an amount less than 0.4 wt%, the amount of nanocellulose is insufficient, so the crack inhibition effect and stress dispersion effect within the composite material become negligible, appearing at a level similar to that of the case where it is not added. Furthermore, if the nanocellulose is included in an amount exceeding 1.0 wt%, the performance of the manufactured composite material is degraded.

[0033] In addition, the weaving form of the carbon fiber of the present invention may be one or more selected from the group consisting of plain weave, twill weave, knit weave, braid weave, non-weave, satin weave, and warp sating weave, and preferably may be plain weave or twill weave. Plain weave carbon fibers are suitable for providing mechanical uniformity, while twill weave carbon fibers are advantageous for flexibility and curved surface forming. If necessary, specific performance of the composite material may be optimized by using plain weave and twill weave alternately. In one embodiment of the present invention, experiments were conducted using plain weave and twill weave carbon fibers.

[0034] The molding method of the above CFRP mainly involves laminating multiple layers of CFRP and then applying a polymer composite material such as epoxy to improve bonding strength. Specific examples include vacuum infusion molding, autoclave molding, compression molding, resin transfer molding, and pultrusion. Vacuum infusion molding is a molding method that maximizes bonding strength by removing internal air and applying pressure while injecting epoxy under a vacuum instead of applying it to the CFRP laminate, while autoclave molding is a molding method that uses high temperature and high pressure by laminating carbon fibers, applying resin over them, and then placing them in an autoclave chamber. In addition, compression molding is a method of forming a desired shape by placing raw materials containing thermosetting resin and carbon fibers into a mold and compressing them at high temperature and high pressure; resin transfer molding is a method of injecting resin using two molds, in which the resin is injected into the fiber-reinforced material through the mold and subsequently cured to form a product; and full-trusion molding is a continuous molding process in which carbon fibers are impregnated with a thermoplastic resin or a thermosetting resin and then continuously extruded through a high-temperature mold. In one embodiment of the present invention, vacuum injection molding was used, but it is also possible to produce CNF-containing CFRP composites using other molding methods.

[0035] In addition, the composite material of the present invention can exhibit characteristics of simultaneously improved high strength and lightweight performance. Specifically, by including a thermosetting resin in which nanocellulose is dispersed, the microstructure of the composite material is strengthened and crack formation is suppressed, thereby improving overall mechanical properties. Specifically, the composite material provides higher strength than conventional CFRP materials and can maintain the same mechanical performance even at a thin thickness, enabling lightweighting. This can significantly reduce the weight of the vehicle and contribute to improved fuel efficiency and increased battery efficiency.

[0036] In one embodiment of the present invention, to analyze the tensile strength improvement effect and stroke of a CFRP composite containing CNF, CFRP specimens with applied CNF were fabricated and experiments were conducted. Specifically, the changes in tensile strength and stroke of the CFRP specimens according to changes in CNF content were analyzed quantitatively and qualitatively.

[0037] In addition, the present invention relates to a method for manufacturing a nanocellulose-based carbon fiber reinforced polymer composite, comprising the steps of: manufacturing a carbon fiber laminate; mixing and dispersing nanocellulose in a thermosetting resin to prepare a mixture; injecting the mixture into the carbon fiber laminate; and curing.

[0038] In the present invention, the step of manufacturing a carbon fiber laminate is to create a carbon fiber laminate by laminating a release film, carbon fiber, peel ply, and mesh flow in that order (see FIG. 3).

[0039] After the step of manufacturing the carbon fiber laminate, the method may further include a step of vacuum sealing after forming the mixture inlet and outlet. Specifically, this step involves placing screw tubes dedicated to infusion at both ends of the carbon fiber laminate, connecting polyethylene tubes to each screw tube to form inlet and outlet ports for injecting and exiting a thermosetting resin (e.g., epoxy), and then sealing the entire structure using sealant tape and a vacuum film. Through this step, the process can be treated to prevent air from entering.

[0040] In the present invention, the step of injecting the mixture into the carbon fiber laminate is the step of injecting the mixture into the carbon fiber laminate using the molding method of CFRP described above.

[0041] In the present invention, the curing step may be cured at 24 to 26°C for 20 to 28 hours, and preferably may be cured at 24 to 26°C for 22 to 25 hours. In one embodiment of the present invention, curing was performed at room temperature of 24°C for 24 hours.

[0042]

[0043] Preferred embodiments are presented below to aid in understanding the present invention. However, the following embodiments are provided merely to facilitate a better understanding of the invention, and the scope of the invention is not limited by these embodiments.

[0044]

[0045] [Example] Preparation of Cellulose Nanofiber (CNF)-Based Carbon Fiber Reinforced Polymer (CFRP) Composites

[0046] CFRP was fabricated using a vacuum injection molding technique with CNF-dispersed epoxy. The CNF powder and CFRP raw materials used for fabrication are shown in Fig. 1, and CNF-based CFRP specimens were fabricated according to the schematic diagram in Fig. 2.

[0047] FIG. 4 shows an overall flowchart of the manufacturing process for a CNF-based CFRP board. Specifically, the process comprises the steps of manufacturing a carbon fiber laminate, vacuum sealing after forming a mixture inlet / outlet, mixing and dispersing nanocellulose in a thermosetting resin to produce a mixture, injecting the mixture into the carbon fiber laminate, and curing.

[0048] First, a release film (blue in Fig. 3) was laid on a flat surface to prevent the epoxy from adhering to the floor. Subsequently, to meet the specifications for the tensile strength test, five layers of carbon fiber (black in Fig. 3) were sequentially laminated on the release film, in the order of release film, carbon fiber, peel ply, and mesh flow. A peel ply (orange in Fig. 3) was placed in the middle to prevent the carbon fiber and mesh flow from sticking together due to the epoxy, and a mesh flow (green in Fig. 3) was placed on top of the peel ply to allow the epoxy to spread evenly.

[0049] Subsequently, infusion-specific screw tubes were placed at both ends of the carbon fiber, peel ply, and mesh flow, and polyethylene tubes were connected to each screw tube to form inlet and outlet ports for the injection and discharge of the epoxy. Afterward, the entire system was sealed using sealant tape and vacuum film to prevent air from entering.

[0050] Subsequently, CNF was placed in a prepared beaker in the same ratio as epoxy, mechanically stirred for 10 minutes, and then further mixed using a homogenizer at 10,000 rpm for 10 minutes. After adding a curing agent to the prepared CNF / epoxy mixture, the mixture was injected through the opening of a polyethylene tube. The opposite end of the polyethylene tube was used to allow air and residual mixture to escape through a resin reservoir connected to a vacuum pump.

[0051] After the injection of the mixture was completed, the composite plate was produced by curing at room temperature (24℃) for 24 hours. The produced plate was made as shown in the specimen photograph in Fig. 5, and the final size was 25 x 250 x 2.5 mm.

[0052]

[0053] [Experimental Example 1] Tensile Strength Analysis of CNF-based CFRP Composites

[0054] The tensile strength of CNF-based CFRP composites was analyzed according to the CNF content (wt%). The maximum tensile strength of CFRP specimens fabricated using plain and twill carbon fibers was measured, and the results were compared.

[0055] As a result, as shown in Figure 6, the maximum tensile strength varied differently in both plain weave and twill weave CFRP depending on the CNF content.

[0056] In the case of plain weave CFRP, the maximum tensile strength started at 657.27 MPa at 0 wt% without CNF addition and increased by approximately 9.7% to 720.73 MPa at 0.6 wt%. Subsequently, a maximum value of 728.04 MPa was recorded at 0.8 wt%, which is an increase of approximately 10.8% compared to the initial value. However, when the CNF content increased to 1 wt%, it decreased to 649.35 MPa, a decrease of approximately 10.8% compared to 0.8 wt%. This indicates that the strength of plain weave CFRP can be optimized within a specific range as the CNF content increases.

[0057] The maximum tensile strength of plain weave CFRP varied depending on the CNF content. It was 657.27 MPa at 0 wt% (no CNF added) and decreased slightly to 651.60 MPa at 0.4 wt%. However, it increased to 720.73 MPa at 0.6 wt% and 728.04 MPa at 0.8 wt%, respectively. These figures represent improvements of approximately 9.7% and 10.8%, respectively, compared to 0 wt%. When the CNF content increased to 1 wt%, the strength decreased to 649.35 MPa, showing a tendency to decrease by approximately 10.8% compared to 0.8 wt%. This indicates that the strength of plain weave CFRP can be optimized within a specific range as the CNF content increases.

[0058]

[0059] On the other hand, for twill CFRP, the maximum tensile strength started at 567.21 MPa at 0 wt% and increased by approximately 44.6% to 819.94 MPa at 0.4 wt%. However, it decreased by approximately 26.9% to 598.73 MPa at 0.6 wt% and increased again by approximately 26.5% to 757.27 MPa at 1 wt%. In particular, the fact that the highest strength was observed at 0.4 wt% indicates that the dispersion of CNF in the twill CFRP contributed to maximizing mechanical performance in the initial stages.

[0060] On the other hand, for twill CFRP, the strength was 567.21 MPa at 0 wt% and increased significantly to 819.94 MPa at 0.4 wt%. It decreased to 598.73 MPa at 0.6 wt%, increased again to 669.14 MPa at 0.8 wt%, and showed a tendency to further increase to 757.27 MPa at 1 wt%. Compared to 0 wt%, it increased by approximately 44.6% at 0.4 wt%, decreased by approximately 26.9% at 0.6 wt%, and increased by approximately 18.0% and 33.5% at 0.8 wt% and 1 wt%, respectively. In particular, the fact that the highest strength was observed at 0.4 wt% indicates that the dispersion of CNF in the twill CFRP contributed to maximizing mechanical performance in the initial stages.

[0061] These results demonstrate that CNF content and carbon fiber weaving method interact with the strength characteristics of the composite material, and that optimal performance can be achieved at an appropriate CNF content. Plain weave CFRP showed a relatively gradual increasing and decreasing trend, whereas twill weave CFRP showed a rapid change at a specific content, reflecting the combined effect of the weaving method and CNF content.

[0062]

[0063] [Experimental Example 2] Stroke Analysis of CNF-Based CFRP Composite

[0064] The maximum stroke of CNF-based CFRP composites was analyzed according to the CNF content (wt%). The maximum stroke values ​​were measured and compared for CFRP specimens fabricated using plain weave and twill weave carbon fibers.

[0065] As a result, as shown in Figure 7, the maximum strokes of plain weave and twill weave CFRPs showed different trends depending on the CNF content.

[0066] In the case of plain weave CFRP, the maximum stroke started at 7.51 mm at 0 wt% without CNF addition and remained almost unchanged at 7.51 mm at 0.4 wt%. However, it increased by approximately 3.9% to 7.80 mm at 0.8 wt% and decreased slightly to 7.77 mm at 1 wt%. This indicates that for plain weave CFRP, the maximum stroke tends to increase gradually as the CNF content increases, while the change is limited at high content levels.

[0067] In the case of plain weave CFRP, the maximum stroke was 7.51 mm at 0 wt% without CNF addition, and there was almost no change at 7.51 mm at 0.4 wt%. It decreased slightly to 7.47 mm at 0.6 wt% and increased to 7.80 mm at 0.8 wt%. Finally, 7.77 mm was recorded at 1 wt%. This indicates that compared to 0 wt%, there was almost no change at 0.4 wt%, a decrease of about 0.5% at 0.6 wt%, and a tendency to increase by about 3.9% and 3.5% at 0.8 wt% and 1 wt%, respectively. Through this, it can be seen that in the case of plain weave CFRP, the maximum stroke tends to gradually increase as the CNF content increases, and the change is limited at high content.

[0068]

[0069] On the other hand, for twill CFRP, the maximum stroke started at 7.09 mm at 0 wt% and increased by approximately 19.2% to 8.45 mm at 0.4 wt%. Subsequently, it decreased slightly to 8.05 mm at 0.8 wt%, but increased again to 8.66 mm at 1 wt%. In particular, the maximum stroke at 1 wt% was found to have increased by approximately 22.1% compared to the initial value (0 wt%). This indicates that twill CFRP exhibits more flexible deformation characteristics at high CNF content.

[0070] On the other hand, for twill CFRP, the maximum stroke was recorded as 7.09 mm at 0 wt%, 8.45 mm at 0.4 wt%, 7.40 mm at 0.6 wt%, 8.05 mm at 0.8 wt%, and 8.66 mm at 1 wt%. Compared to 0 wt%, it increased by approximately 19.2% at 0.4 wt%, decreased by approximately 4.9% at 0.6 wt%, and increased by approximately 8.8% at 0.8 wt%. Finally, it increased by approximately 22.1% at 1 wt%. This indicates that the maximum stroke of twill CFRP gradually increases as the CNF content increases, and exhibits more flexible deformation characteristics at high CNF content.

[0071] These results reflect the influence of CNF content and carbon fiber weaving method on the deformation characteristics of the composite and demonstrate that stroke variation can vary significantly depending on the weaving method. Plain weave CFRP showed relatively stable stroke changes, whereas twill weave CFRP exhibited rapid changes depending on the CNF content.

[0072]

[0073] In conclusion, the present invention provides a high-strength CFRP composite containing nanocellulose that simultaneously achieves high strength and lightweighting, thereby confirming that it can contribute to improving structural performance and increasing energy efficiency in various industrial fields such as transportation, aerospace, construction, and sports equipment. Through this, it is possible to present an innovative solution in industrial fields requiring lightweighting and mechanical performance.

[0074]

[0075] The present invention has been described with reference to the embodiments illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the claims below.

Claims

1. A nanocellulose-based carbon fiber reinforced polymer composite material injected with a thermosetting resin in which nanocellulose is dispersed.

2. A nanocellulose-based carbon fiber reinforced polymer composite according to claim 1, characterized in that the nanocellulose is a cellulose nanofiber.

3. A nanocellulose-based carbon fiber reinforced polymer composite according to claim 1, characterized in that the nanocellulose is mixed and dispersed in an amount of 0.4 to 1.0 wt% based on the thermosetting resin.

4. A nanocellulose-based carbon fiber reinforced polymer composite according to claim 1, characterized in that the carbon fiber is one or more weave forms selected from the group consisting of plain weave, twill weave, knit weave, braid weave, non-weave, satin weave, and warp sating weave.

5. A nanocellulose-based carbon fiber reinforced polymer composite according to claim 1, characterized in that the thermosetting resin is one or more selected from the group consisting of epoxy resin, polyester resin, vinyl ester resin, phenolic resin, polyurethane resin, and silicone resin.

6. A nanocellulose-based carbon fiber reinforced polymer composite according to claim 1, characterized in that the composite material simultaneously has improved high strength and lightweight properties.

7. Step of manufacturing a carbon fiber laminate; A step of preparing a mixture by mixing and dispersing nanocellulose in a thermosetting resin; The step of injecting the above mixture into the carbon fiber laminate; and A method for manufacturing a nanocellulose-based carbon fiber reinforced polymer composite, comprising a curing step.

8. A method for manufacturing a nanocellulose-based carbon fiber reinforced polymer composite, wherein, in claim 7, the carbon fiber laminate is laminated in the order of a release film, carbon fiber, peel ply, and mesh flow.

9. A method for manufacturing a nanocellulose-based carbon fiber reinforced polymer composite, characterized in that, in claim 7, after the step of manufacturing the carbon fiber laminate, it further comprises the step of vacuum sealing after forming a mixture inlet / outlet.

10. A method for manufacturing a nanocellulose-based carbon fiber reinforced polymer composite, wherein, in claim 7, the nanocellulose is mixed and dispersed in an amount of 0.4 to 1.0 wt% based on the thermosetting resin.

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