KR102191092B1 - Thermoplastic resin matrix fiber and carbon fiber-reinforced thermoplastic plastic composite having excellent impregnation property produced therefrom and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a method of manufacturing a thermoplastic resin matrix fiber, a highly impregnable carbon fiber reinforced thermoplastic plastic composite material including the same, and more particularly, by providing a thermoplastic resin matrix fiber in the form of a fiber, impregnation in carbon fiber and interfacial binding force are improved. It is to provide an improved highly impregnable carbon fiber reinforced thermoplastic plastic composite material and a method of manufacturing the same.

Description

A thermoplastic resin matrix fiber, a highly impregnated carbon fiber reinforced thermoplastic plastic composite material containing the same, and a manufacturing method thereof {THERMOPLASTIC RESIN MATRIX FIBER AND CARBON FIBER-REINFORCED THERMOPLASTIC PLASTIC COMPOSITE HAVING EXCELLENT IMPREGNATION PROPERTY PRODUCED THEREFROM AND MANUFACTURING METHODREOF}

The present invention relates to a method of manufacturing a thermoplastic resin matrix fiber, a highly impregnable carbon fiber reinforced thermoplastic plastic composite material including the same, and more particularly, by providing a thermoplastic resin matrix fiber in the form of a fiber, impregnation in carbon fiber and interfacial binding force are improved. It is to provide an improved highly impregnable carbon fiber reinforced thermoplastic plastic composite material and a method of manufacturing the same.

Globally, regulations on carbon dioxide emission regulations due to environmental pollution and global warming have been strengthened, and while energy saving and carbon dioxide emission reduction are required, a wide range of fields such as automobiles, aerospace, railroads, ships, and transport machinery are used to reduce weight. Technology development of alternative materials is actively progressing.

For such an alternative material, the development of a fiber-reinforced polymer composite material using a light-weight polymer as a matrix and using glass fiber, carbon fiber, and aramid fiber as a reinforcing material is becoming important.

Among them, carbon fiber reinforced polymer composites have excellent weight reduction effects of about 30% compared to aluminum and 50% compared to steel, and strength and stiffness, light weight, impact resistance, and chemical resistance compared to the weight of the metal materials that were used before. , Corrosion resistance, and ease of manufacture due to the integration of parts are in the spotlight as a material for application in the high-tech industry, and the usage is increasing rapidly.

The fiber-reinforced polymer composite material using a thermosetting resin had the advantage of having high strength and high stiffness characteristics, but it took a long time to form the composite material due to the curing reaction, and there was a need to improve impact resistance.

In order to solve the above problems, research on fiber-reinforced polymer composite materials using thermoplastic resins has been intensively conducted. In the case of a thermoplastic resin, it is recyclable, has high toughness, and does not require a curing reaction, so the cycle time for forming a composite material is very short, and thus the time can be shortened, and thus productivity is very excellent.

However, in the case of thermoplastic resin, it has low interfacial bonding strength with carbon fibers and has a high melt viscosity, so that impregnation between carbon fiber bundles is very low, so that it can form internal voids when manufacturing composite materials. Due to the deterioration of physical properties, practical use was very limited, and there was a disadvantage of insufficient heat resistance. These shortcomings have a great influence on the low interfacial shear strength between the carbon fiber and the thermoplastic resin, and become a factor that greatly deteriorates the mechanical properties of the carbon fiber reinforced thermoplastic composite (CFRTP). .

In order to solve these problems and expand the field of application, research to improve the impregnation of thermoplastic resins is being widely conducted, and by laminating a thermoplastic resin in a film form with carbon fibers and impregnating the carbon fibers with carbon fibers under high temperature and high pressure conditions Although a method of manufacturing a reinforced thermoplastic resin composite material has been attempted, this method has a disadvantage in that the melt viscosity of the thermoplastic resin is very high, so that the impregnation property is low, and deterioration of the thermoplastic resin may occur, thereby reducing the physical properties.

In addition, chemical and physical surface treatment methods were applied to increase the surface free energy of carbon fibers to increase interfacial bonding with thermoplastic resins, but among them, acid treatment and plasma treatment as chemical treatment methods are disadvantages of etching the carbon fiber surface. There was a problem of deteriorating its own physical properties, and the physical surface treatment method had a limitation because the effect was relatively very low.

Republic of Korea Patent Publication No. 10-1992-0009892 (1992.06.25)

An object of the present invention is to provide a matrix fiber with improved impregnation in carbon fiber and a method for producing the same.

In addition, another object of the present invention is to provide a matrix fiber with improved mechanical properties by adding carbon-based nanoparticles and a method for manufacturing the same.

In addition, another object of the present invention is to provide a fibrous matrix fiber having excellent impregnation properties, a highly impregnable carbon fiber-reinforced thermoplastic plastic composite material to which the same, and a method of manufacturing the same.

In addition, another object of the present invention is to provide a highly impregnated carbon fiber reinforced thermoplastic plastic composite material with remarkably improved mechanical properties, and a method for manufacturing the same.

The method of manufacturing a highly impregnated carbon fiber-reinforced thermoplastic plastic composite material according to the present invention comprises the steps of preparing a matrix fiber including a thermoplastic resin and carbon-based nanoparticles; And forming a laminate by laminating the matrix fibers on one or both sides of the carbon fiber layer, and impregnating the matrix fibers between the carbon fibers by heating and pressing the laminate to form a laminate.

In the method of manufacturing a highly impregnated carbon fiber reinforced thermoplastic plastic composite material according to an embodiment of the present invention, the thermoplastic resin is a polyethylene resin, a polypropylene resin, a polyvinyl chloride resin, a polyvinylidene chloride resin, an acrylonitrile butadiene styrene copolymer. Polymer, polystyrene resin, acrylonitrile styrene copolymer resin, methacrylic resin, polyvinyl alcohol resin, ethylene vinyl acetate copolymer resin, cellulose resin, polyamide resin, polyacetal resin, polycarbonate resin, modified polyphenylene ether Resin, thermoplastic polyester resin, polytetrafluoroethylene resin, fluorine resin, polyphenylene sulfide resin, polysulfone resin, polyetherimide resin, polyethersulfone resin, polyether ketone resin, liquid crystal polyester resin, polyamideimide Resins, polyimide resins, and polybenzimidazole may include any one or a mixture of two or more selected from the group consisting of.

In the method of manufacturing a highly impregnated carbon fiber reinforced thermoplastic plastic composite material according to an embodiment of the present invention, the carbon-based nanoparticles are graphene nanoribbons, carbon nanotubes, graphene, graphite, graphene flakes, graphene oxide flakes , Graphite flakes, expanded graphite flakes, oxidized graphite flakes, fullerene, carbon black, and the like. It may include any one or a mixture of two or more selected from the group consisting of.

In the method for manufacturing a highly impregnated carbon fiber-reinforced thermoplastic plastic composite material according to an embodiment of the present invention, the carbon-based nanoparticles may be included in an amount of 0.1 to 10 wt% based on the total weight of the matrix fiber.

In the method of manufacturing a highly impregnated carbon fiber-reinforced thermoplastic plastic composite material according to an embodiment of the present invention, the thickness of the matrix fiber may include 1 to 100 μm.

In the method of manufacturing a highly impregnated carbon fiber reinforced thermoplastic plastic composite material according to an embodiment of the present invention, the heating and pressing temperature may include 100 to 300°C.

The highly impregnable carbon fiber-reinforced thermoplastic plastic composite material according to the present invention is manufactured by the method of manufacturing the highly impregnable carbon fiber-reinforced thermoplastic plastic composite material, and based on 100 parts by weight of the highly impregnable carbon fiber-reinforced thermoplastic plastic composite material, the matrix fiber Is 20 to 60 parts by weight, and the carbon fiber may include 40 to 80 parts by weight.

The matrix fiber and its manufacturing method according to an embodiment of the present invention have an advantage in that impregnation in carbon fiber is very excellent.

The matrix fiber and its manufacturing method according to an embodiment of the present invention have the advantage of excellent mechanical properties by adding carbon-based nanoparticles.

The highly impregnable carbon fiber-reinforced thermoplastic plastic composite material and its manufacturing method according to an embodiment of the present invention have the advantage of having excellent impregnation in carbon fibers by using a fiber matrix fiber having excellent impregnation properties as a matrix.

The highly impregnated carbon fiber-reinforced thermoplastic plastic composite material and its manufacturing method according to an embodiment of the present invention have an advantage in that the bonding strength between the matrix fiber and the carbon fiber is remarkably improved, and thus mechanical properties are excellent.

FIG. 1 a) shows a matrix fiber according to an embodiment of the present invention, and FIG. 1 b) shows a photograph of a matrix fiber according to an embodiment of the present invention observed with a scanning electron microscope (SEM). .

Hereinafter, the present invention will be described in more detail through specific examples or examples including the accompanying drawings. However, the following specific examples or examples are only one reference for describing the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

In addition, unless otherwise defined, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. The terms used in the description in the present invention are merely intended to effectively describe specific embodiments and are not intended to limit the present invention.

In addition, the singular form used in the specification and the appended claims may be intended to include the plural form unless otherwise indicated in the context.

In order to solve the problem of very low impregnation in carbon fiber due to the high viscosity of the thermoplastic resin when manufacturing a carbon fiber-reinforced thermoplastic plastic composite material, the inventors of the present invention prepared a matrix fiber in the form of a fiber using a thermoplastic resin, and applied this. In this case, the present invention was completed by finding that it is possible to provide a composite material with significantly improved impregnation in carbon fibers compared to conventional film-type thermoplastic resins due to a short flow distance of the matrix fibers.

Hereinafter, the present invention will be described in detail.

The present invention provides a method for producing a highly impregnated carbon fiber-reinforced thermoplastic plastic composite material, comprising the steps of: preparing a matrix fiber including a thermoplastic resin and carbon-based nanoparticles; Forming a laminate by laminating the matrix fibers on one or both sides of the carbon fiber layer; Heating and pressing the laminate to impregnate and bind the matrix fibers between the carbon fibers.

The method of manufacturing the highly impregnated carbon fiber reinforced thermoplastic plastic composite material may further include cooling after the binding step.

First, a step of preparing a matrix fiber including a thermoplastic resin and carbon-based nanoparticles will be described.

The thermoplastic resin and the carbon-based nanoparticles may be mixed and used as a raw material for preparing the matrix fiber, and although not particularly limited, the carbon-based nanoparticles are 0.1 to 10 wt% based on the total weight of the raw material, specifically It may be included in 1 to 7 wt%, more specifically 1 to 5 wt%.

The thermoplastic resin is not particularly limited, but may be present in the form of powder and pellets, and the like, polyethylene resin, polypropylene resin, polyvinyl chloride resin, polyvinylidene chloride resin, acrylonitrile butadiene styrene copolymer resin, polystyrene resin, Acrylonitrile styrene resin, methacrylic resin, polyvinyl alcohol resin, ethylene vinyl acetate copolymer resin, cellulose resin, polyamide resin, polyacetal resin, polycarbonate resin, modified polyphenylene ether resin, thermoplastic polyester resin, Polytetrafluoroethylene resin, fluorine resin, polyphenylene sulfide resin, polysulfone resin, polyetherimide resin, polyethersulfone resin, polyether ketone resin, liquid crystal polyester resin, polyamideimide resin, polyimide resin and poly It may include any one or a mixture of two or more selected from the group consisting of benzimidazole resins, but is not limited thereto.

The carbon-based nanoparticles are not particularly limited, but specific examples are graphene nanoribbons, carbon nanotubes, graphene, graphite, graphene flakes, graphene oxide flakes, graphite flakes, expanded graphite flakes, oxide graphite flakes, fullerene. And it may include any one or a mixture of two or more selected from the group consisting of carbon black.

The carbon nanotubes have excellent mechanical and electrical properties and are dispersed in the thermoplastic resin to improve physical properties of the thermoplastic resin, and specifically, the mechanical and electrical properties of the matrix fiber may be improved.

The carbon nanotubes include single-walled carbon nanotubes, multi-walled carbon nanotubes, and several carbon nanotubes depending on the number of graphene sheets forming the wall of the tube. It may exist in the form of a bundle or the like, and all of them may be used without particular limitation in order to improve the mechanical and electrical properties of the thermoplastic resin and the matrix fiber. For example, the multi-walled carbon nanotube may have a thickness of 5 nm to 100 nm, but is not particularly limited thereto.

In a specific embodiment, the carbon nanotubes may be more effective to manufacture the matrix fiber of the present invention to use the multi-walled carbon nanotubes, but this is only an example and is not limited thereto.

In a specific aspect, the carbon-based nanoparticles may be included in an amount of 0.1 to 10 wt% based on the total weight of the matrix fiber, specifically 1 to 7 wt%, more specifically 1 to 5 wt% However, as it is included in the above range, the dispersion in the matrix fiber may be excellent, but is not particularly limited thereto.

The step of preparing the matrix fiber is a group consisting of melt spinning, wet spinning, dry spinning, electrospinning, composite spinning, gel spinning, phase separation spinning, and release spinning, using a mixture containing the thermoplastic resin and carbon nanoparticles. It may be prepared by one or two or more methods selected from, but is not particularly limited thereto, and may be prepared by various known methods.

The melt spinning is not particularly limited, but may be performed using an extruder, which is only an example for exemplifying and is not limited thereto.

In a specific aspect, the matrix fiber may be produced through the melt spinning, and the step of introducing a raw material obtained by mixing the thermoplastic resin and the carbon-based nanoparticles into an extruder; Melting and kneading the raw material to uniformly disperse the carbon-based nanoparticles in the thermoplastic resin; It may be manufactured by including the step of cooling the matrix fiber obtained from the die of the extruder.

In order to prepare the raw material, the carbon-based nanoparticles may be contained in an amount of 0.1 to 10 wt% based on the total weight of the raw material, specifically 1 to 7 wt%, more specifically 1 to 5 wt% It may be included, and as it is included in the above range, it may be uniformly mixed with the thermoplastic resin, and it is preferable to have excellent dispersibility in the thermoplastic resin, but is not particularly limited thereto.

The melting and kneading may be performed at a temperature in the range of 50 to 300 °C, specifically 70 to 300 °C, more specifically 100 to 300 °C, but the thermoplastic resin can be melted. The temperature is not particularly limited, and may be melted while variously changing the melting temperature within the temperature range.

The raw material may be melted and kneaded to uniformly disperse the carbon-based nanoparticles in the thermoplastic resin, and as a specific example, the melting and kneading are four temperatures classified from the inner cylinder of the extruder to the die after the raw material is injected. It may be performed while passing through the section, and the four temperature sections may be set to different temperature ranges.

The four temperature sections are not particularly limited as long as they are temperatures capable of melting the thermoplastic resin, but specifically, for example, the four temperature sections may each independently be a temperature of 50 to 300 °C, and specifically 70 To 300° C., more specifically 100 to 300° C., the raw material may be melted while varying the temperature of each section in order to manufacture the matrix resin, but is not particularly limited thereto.

In a specific aspect, the four temperature sections may be 100 to 150° C., 150 to 200° C., 230 to 270° C., 250 to 300° C., respectively, in order, and melt and melt while passing the raw material through the four temperature sections. It may be kneaded, but this is only an example and is not limited thereto.

The kneading speed may be 50 to 500 rpm, specifically 100 to 500 rpm, but if it is a speed that allows the raw materials to be uniformly mixed and the carbon-based nanoparticles to be uniformly dispersed in the thermoplastic resin, It is not limited thereto.

After melting and kneading the raw material, the matrix fiber may be obtained by cooling the matrix fiber obtained from the die of the extruder.

The cooling may be performed by cooling the matrix fiber extruded from the die in air or immersing it in a water-filled bath, and is not particularly limited, and any other known method may be used.

The matrix fiber obtained through the cooling step may be collected on a winder, and as a specific example, the thickness of the matrix fiber obtained through the cooling step may be 1 to 100 μm, specifically 20 to 90 μm, more specifically 30 to 80 μm, and by having a thickness in the above range, it is preferable to have better impregnation properties when manufacturing the highly impregnable carbon fiber reinforced thermoplastic plastic composite material of the present invention, but is particularly limited thereto It does not become.

The extruder is not particularly limited, for example, a single-screw extruder and a multi-screw extruder having two to five shafts can be used, but in addition to the conventionally used elastic melt extruder, hydro-dynamic extruder, ram type continuous extruder, roll type extruder, etc. If it is an extruder, it may be used without particular limitation.

In one aspect, the extruder used in the present invention may be a twin-screw extruder, and as the twin-screw extruder is used, the raw materials can be more evenly mixed and kneaded, and the amount of the carbon-based nanoparticles in the thermoplastic resin Acidity may be better, but this is only an example and is not particularly limited thereto.

As a specific example, the matrix fiber of the present invention may be made of a raw material including the polycarbonate resin and the multi-walled carbon nanotube particles, and the multi-walled carbon nanotube particles are 0.1 to the total weight of the raw material. It may be included in 10 wt%, preferably 1 to 7 wt%, more preferably 1 to 5 wt%, and may be uniformly mixed with the polycarbonate resin as included in the above range. It may, and may have excellent dispersibility in the polycarbonate resin, so it is preferable, but this is only an example and is not particularly limited thereto.

The matrix fiber may be melted during the production of the highly impregnated carbon fiber-reinforced thermoplastic plastic composite material of the present invention to have excellent impregnation properties between the carbon fibers, and may form an excellent interfacial bonding strength with the carbon fibers.

Next, the step of forming a laminate by laminating the matrix fibers on one or both sides of the carbon fiber layer will be described.

The matrix fiber may be laminated on one or both sides of the carbon fiber layer to form a laminate, and this may be repeated at least once to form a laminate in which several matrix fiber layers and the carbon fiber layers are alternately repeated. This is not particularly limited and can be freely changed to manufacture the highly impregnated carbon fiber reinforced thermoplastic plastic composite material of the present invention.

Carbon fibers that can be used in the present invention include PAN-based carbon fibers and pitch-based carbon fibers, and are not particularly limited.

In the present invention, the carbon fiber layer refers to a layer made of carbon fibers having various forms, and the short fiber may include any one or two or more types selected from the group consisting of tow, nonwoven fabric, and woven fabric, If it is a form that can be made of carbon fiber other than, there is no special limitation thereto.

According to an aspect of the present invention, the carbon fiber may not be impregnated with the thermoplastic resin or may be impregnated with the thermoplastic resin, but this is only an example and can be freely changed according to the purpose of the present invention.

Next, a step of impregnating and binding the matrix fibers between the carbon fibers by heating and pressing the laminate will be described.

The bonding step may be to melt the matrix fibers and impregnate them between the carbon fibers, through which the carbon fibers are bound to produce a highly impregnable carbon fiber reinforced thermoplastic plastic composite material having excellent impregnation properties and mechanical strength. have.

In an aspect of the present invention, it may further include cooling after the binding step.

The heating and press molding is not particularly limited as long as it is a known method capable of producing a composite material, and various methods may be applied. Specifically, for example, extrusion molding, injection molding, pultrusion molding, compression molding, resin transfer molding (RTM) molding, hand lay-up molding, autoclave ( Various methods such as autoclave) molding and filament winding molding are possible.

In a specific embodiment, the laminate may be subjected to the compression molding method, heated and pressurized to produce the highly impregnated carbon fiber reinforced thermoplastic plastic composite material of the present invention, and a heated specimen compression molding machine (hot press) is used. It may be, but is not particularly limited thereto.

The heating and press molding temperature is not particularly limited as long as it is a temperature at which the matrix fiber can be melted, but may be 100 to 300 °C, specifically 150 to 300 °C, more specifically 200 to 300 °C, and , It is preferable that the matrix fibers are melted in the above range to have excellent impregnation properties between the carbon fibers.

The pressurization is not particularly limited, but may be, for example, applying a pressure of 0.1 to 20 MPa, and may be applied for 1 to 30 minutes under a pressure condition of 1 to 10 MPa.

Through the heating and pressing process, the highly impregnated carbon fiber-reinforced thermoplastic plastic composite material of the present invention having excellent impregnation properties and mechanical properties can be manufactured.

As a specific example, the matrix fiber may be melted through the heating and pressing process. In the case of the matrix fiber, as the matrix fiber has a fiber shape, the contact area with the carbon fiber is wide, and the contact distance is also very large. Since it is close and the flow distance is very short during melting, it can have very good impregnation between the carbon fibers.

More specifically, the laminate may be heated and press-molded to impregnate and bind the matrix fibers between the carbon fibers, whereby the highly impregnated carbon fiber reinforced thermoplastic plastic composite material of the present invention may be manufactured.

In one aspect, when a composite material is manufactured by the method of manufacturing a highly impregnated carbon fiber-reinforced thermoplastic plastic composite material of the present invention, the matrix fiber has excellent impregnation property in the carbon fiber, and thus, excellent interfacial bonding strength with carbon fiber Thus, mechanical properties can be significantly improved.

The highly impregnable carbon fiber-reinforced thermoplastic plastic composite material according to the present invention is manufactured by the method of manufacturing the highly impregnable carbon fiber-reinforced thermoplastic plastic composite material, and based on 100 parts by weight of the highly impregnable carbon fiber-reinforced thermoplastic plastic composite material, the matrix fiber Is 20 to 60 parts by weight, and the carbon fiber may include 40 to 80 parts by weight.

In a specific aspect, with respect to 100 parts by weight of the highly impregnated carbon fiber reinforced thermoplastic plastic composite material, the matrix fiber may be 20 to 60 parts by weight, specifically 40 to 60 parts by weight, more specifically 40 to 60 parts by weight. May include denials.

In a specific aspect, based on 100 parts by weight of the highly impregnated carbon fiber reinforced thermoplastic plastic composite material, the carbon fiber may include 40 to 80 parts by weight, specifically 40 to 70 parts by weight, more specifically 40 It may contain to 60 parts by weight.

Hereinafter, the present invention will be described in more detail based on Examples and Comparative Examples. However, the following Examples and Comparative Examples are only one example for describing the present invention in more detail, and the present invention is not limited by the following Examples and Comparative Examples.

[Example 1]

1. Preparation of Matrix Fiber

Multi-walled carbon nanotubes (, CM-95 grade, Iljin Nanotech) with an average diameter of 20 nm, an average length of 25 um, and a specific surface area of 250 m ² /g were prepared, and polycarbonate pellets (Iupilon E2000, Mitsubishi Engineering-Plastics Corporation) Was dried in a vacuum oven at 80°C. After dry mixing 5 wt% of multi-walled carbon nanotubes and 95 wt% of polycarbonate pellets based on the total weight of the dried multi-walled carbon nanotubes and polycarbonate pellets, a twin-screw extruder (Ba-11, Bautech) hopper And extruded.

The die has a L/D (length/diameter) of 20 and a circular die nozzle having 60 holes with a diameter of 0.001 mm, the screw speed is 300 rpm, and the extrusion temperature is four temperatures from the cylinder inside the extruder to the die. The sections were set to 130 ˚C, 170 ˚C, 250 ˚C, and 285 ˚C.

After melting and kneading under the above temperature conditions to disperse polycarbonate and multi-walled carbon nanotubes, the fibers obtained by passing through a die were cooled in water. The winding speed was 0.1 m/min, and the fibers were collected on a winder so that the diameter of the fibers was 60 μm, and dried in a vacuum oven at 100° C. for 30 minutes to finally prepare matrix fibers in which multi-walled carbon nanotubes were dispersed.

2. Manufacturing of highly impregnated carbon fiber reinforced thermoplastic plastic composite material

Carbon fiber fabric (12K Carbon Fiber, carbon fiber weight 200 g/㎡, Plain) was prepared by cutting each 10 x 10 mm square size, and the length of the prepared matrix fiber (diameter 60 μm) was cut to 10 mm. Ready. At this time, the weight of the carbon fiber in the cut carbon fiber fabric was 10 mg.

After spreading the cut matrix fibers to cover the entire area on one side of the cut carbon fiber fabric layer, a pressure of 10 MPa is applied at 270°C for 10 minutes using a hot press, and then cooled to room temperature. A 1 cm thick composite material specimen was prepared.

The process of scraping off a portion of the prepared composite material not impregnated with matrix fibers with a knife, and then completely penetrating the carbon fiber fabric and extracting only the integrated portion, putting it in a furnace at 450°C, and burning only the matrix fibers. After passing through, the weight of the remaining carbon fiber was calculated, and the weight of the carbon fiber was 5.9 mg. Through these results, it was confirmed that the weight of the impregnated carbon fiber was 40.4% higher than that of Comparative Example 1 in the case of the composite material prepared in Example 1, which is a large area in contact with the carbon fiber and melting It can be seen that the result was obtained by uniformly impregnating the carbon fibers with the short flow distance.

[Comparative Example 1]

Polycarbonate pellets in which the same multi-walled carbon nanotubes were dispersed as in Example 1 were prepared, and based on the total weight of the multi-walled carbon nanotubes and polycarbonate pellets, 5 wt% of multi-walled carbon nanotubes and 95 wt of polycarbonate pellets Disperse and mix% with a high-speed mixer to prepare mixed powder, place it on a hot press at 270 ℃ to melt it, apply a pressure of 10 MPa for 10 minutes, and cool to room temperature to disperse 60 μm thick multi-walled carbon nanotubes Obtained a thermoplastic resin film. At this time, a 60 μm thickness gauge was used to prepare a uniform film having a thickness of 60 μm.

After laminating the cut thermoplastic resin film on one side of the same 10 x 10 mm carbon fiber fabric layer as in Example 1, applying a pressure of 10 MPa for 10 minutes at 270 °C using a hot press, and then cooling to room temperature To prepare a 1 cm thick composite material specimen.

The thermoplastic resin film is melted from the prepared composite material and the unimpregnated portion is scraped with a knife, and then the thermoplastic resin film completely penetrates the carbon fiber fabric, extracts only the integrated portion, and puts it in a furnace at 450°C. , As a result of calculating the weight of the carbon fiber remaining after the process of burning only the matrix fiber, the weight of the carbon fiber was 4.2 mg. From these results, it can be seen that in the case of Comparative Example 1, a thermoplastic resin film in the form of a film was used as a matrix, which was obtained by having lower impregnation properties than in Example 1.

Claims (7)

Spinning a mixture containing a thermoplastic resin and carbon-based nanoparticles to prepare a matrix fiber,
Forming a laminate by laminating the matrix fibers on one or both sides of a carbon fiber layer, and
A method for producing a highly impregnable carbon fiber-reinforced thermoplastic plastic composite material comprising the step of impregnating and binding the matrix fibers between the carbon fibers by heating and pressing the laminated body. The method of claim 1,
The thermoplastic resin is polyethylene resin, polypropylene resin, polyvinyl chloride resin, polyvinylidene chloride resin, acrylonitrile butadiene styrene copolymer resin, polystyrene resin, acrylonitrile styrene copolymer resin, methacrylic resin, polyvinyl alcohol resin , Ethylene vinyl acetate copolymer resin, cellulose resin, polyamide resin, polyacetal resin, polycarbonate resin, modified polyphenylene ether resin, thermoplastic polyester resin, polytetrafluoroethylene resin, fluorine resin, polyphenylene sulfide Resin, polysulfone resin, polyetherimide resin, polyethersulfone resin, polyether ketone resin, liquid crystal polyester resin, polyamideimide resin, polyimide resin, and any one or two or more selected from the group consisting of polybenzimidazole Method for producing a highly impregnated carbon fiber reinforced thermoplastic plastic composite material consisting of a mixture. The method of claim 1,
The carbon-based nanoparticles are selected from the group consisting of graphene nanoribbons, carbon nanotubes, graphene, graphite, graphene flakes, graphene oxide flakes, graphite flakes, expanded graphite flakes, graphite oxide flakes, fullerene, and carbon black. Method for producing a highly impregnated carbon fiber reinforced thermoplastic plastic composite material consisting of any one or a mixture of two or more. The method of claim 1,
The carbon-based nanoparticles are contained in an amount of 0.1 to 10 wt% based on the total weight of the matrix fiber. The method of claim 1,
The thickness of the matrix fiber is 1 to 100 μm, the method of manufacturing a highly impregnated carbon fiber reinforced thermoplastic plastic composite material. The method of claim 1,
The heating and pressure molding temperature is 100 to 300 ℃ method for producing a highly impregnated carbon fiber reinforced thermoplastic plastic composite material. It is manufactured by the manufacturing method of any one selected from claim 1 to claim 6,
A highly impregnable carbon fiber reinforced thermoplastic plastic composite material, wherein the matrix fiber is 20 to 60 parts by weight and the carbon fiber is 40 to 80 parts by weight based on 100 parts by weight of the highly impregnable carbon fiber reinforced thermoplastic plastic composite material.

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