KR20190111885A - Method and apparatus for producing high strength component - Google Patents

Abstract

Disclosed by an embodiment of the present invention is a high strength component manufacturing apparatus. The high strength component manufacturing apparatus includes: a reinforcement material accommodating unit which accommodates a reinforcement material including a nanomaterial; a base material accommodating unit which accommodates a base material including at least one of thermosetting resin and ultraviolet curable resin; a reinforcement material functionalizing unit which is connectable to at least one part of the reinforcement accommodating unit and functionalizes the reinforcement material to facilitate a mixing between the base material and the reinforcement material; a mixture generating unit which can be connected to the reinforcement material accommodating unit and the base material accommodating unit, receives the functionalized reinforcement material from the reinforcement material accommodating unit, receives the base material from the base material accommodating unit, and generates a mixture by mixing the functionalized reinforcement material with the base material; an injection unit which is connected to the mixture generating unit, has a nozzle, and injects the generated mixture into a mold through the nozzle; an electromagnetic field emitter which applies at least one of an electric field and a magnetic field to at least one end part of the mold so that the injected mixture is oriented; a mold which contains the injected mixture and cures the oriented mixture to produce a high strength component; and a control unit which controls the operation of the high strength component manufacturing apparatus. The present invention improves dispersibility and orientation.

Description

METHOD AND APPARATUS FOR PRODUCING HIGH STRENGTH COMPONENT}

TECHNICAL FIELD The present disclosure relates to composite materials, and more particularly, to a method and apparatus for manufacturing high strength components using nano carbon materials.

Recently, as various regulations related to carbon dioxide reduction have increased worldwide and the demand for fuel efficiency has increased, the need for lightening existing plastic parts and the lightening of replacing metal parts with plastic composite materials (e.g. ), The demand for

Composite materials have been studied in earnest since glass fiber was made in the early 1930s, and recently entered the era of advanced composite materials as the use of carbon fiber, boron fiber, etc. has been in full swing. Composite materials can improve strength, stiffness, corrosion resistance, fatigue life, abrasion resistance, impact characteristics, high temperature characteristics, electrical insulation, insulation, light weight, and appearance compared to single metal or plastic materials. Composite materials are applied to various fields such as structures in ships, marine and marine fields, automobiles, sports and construction fields. In particular, in the automotive field, there is an urgent need for a lightweight composite material having excellent mechanical properties such as durability, wear resistance, and lubricity for improving fuel economy.

Metals, metal alloys, and ceramics, which are conventionally used as reinforcement materials, generally possess mechanical properties over carbon materials or glass-reinforced fibers, but have high density and have high weight and are difficult to process.

 Reinforced glass fiber has lower mechanical properties than the reinforcing material, but has a very low cost and light advantage. However, in order to compensate for the low mechanical properties, it has a disadvantage of dispersing at least 20 to 30% by weight of the base material.

Recently, polymer nanocomposites that use nanomaterials as reinforcement materials have been highlighted. Nanocomposites are compounded by dispersing dissimilar materials at molecular level or nanometer scale. Usually, the size of dispersed phase (dispersed state) is 1 ~ 100nm and it can further improve the excellent processability, mechanical and optical properties of existing polymers. It is the next generation material that is likely to be applied in a wide range of parts, electrical and electronics, and construction.

Recently, research on carbon nanotubes has been actively conducted as one of the nanomaterials that are widely used in such nanocomposites. Carbon nanotubes are long-long nano-diameter materials made of carbon atoms, which have 1000 times higher electrical conductivity than copper and have strong covalent bonds in the fiber direction, resulting in high strength and elastic modulus of 100 times that of steel. The polymer composite material, which has carbon nanotubes dispersed in a polymer matrix due to its large aspect ratio with respect to diameter and length, is a material having high stiffness to the same weight or a functional material such as a conductive material and an electromagnetic shielding material. It is attracting attention because it can be used.

There is a prior patent document KR10-1294204 relating to the preparation of carbon nanotube-polymer nanocomposites.

The present disclosure is a technique devised in response to the background art, in a composite material consisting of a plastic (base material) and a carbon nanotube (reinforcement material), by dispersing in the plastic by functionalizing the surface of the carbon nanotube An object of the present invention is to provide a method for producing a composite material having improved orientation.

In addition, one of various objects according to embodiments of the present disclosure is to develop a high-performance gear parts for automobiles using the manufactured composite materials.

In order to achieve the above object, the present invention discloses a high-strength component manufacturing method for a vehicle. The method comprises the steps of: providing a reinforcement material comprising a nanomaterial; Providing a matrix material comprising at least one of a thermosetting resin and an ultraviolet curable resin; Functionalizing the reinforcement to facilitate mixing between the matrix material and the reinforcement; Creating a mixture by mixing a functionalized stiffener with the matrix material; Injecting the resulting mixture into a mold; Applying at least one of an electric field and a magnetic field to at least one end of the mold such that the injected mixture is oriented; And hardening the oriented mixture to produce a high strength component.

In one embodiment of the invention, applying at least one of the electric and magnetic fields comprises: determining the polarity of the electric or magnetic field to be applied to one end of the mold to correspond to the polarity of the functional group used to functionalize the reinforcement Doing; And orienting the mixture by applying an electric or magnetic field of the determined polarity to at least one end of the mold.

In one embodiment of the invention, applying at least one of the electric field and the magnetic field comprises: based on at least one of the local stiffness, heat transfer force, conductivity and radiation shielding force required for the high strength component for the vehicle, Determining a voltage of; And orienting the mixture by applying an electric field according to the determined voltage to at least one end of the mold.

In one embodiment of the present invention, generating the mixture may include: generating the mixture by further mixing the nanofiller to induce a depletion force in the functionalized stiffener; Can be.

In one embodiment of the present invention, the step of producing the mixture may include: generating the mixture while maintaining the mixing temperature in the range of 60 ° C to 180 ° C.

In one embodiment of the present invention, the step of functionalizing the reinforcing material may include: introducing a functional group at a defect position in which the lattice structure of the nanomaterial is an unfinished portion. Here, the step of functionalizing the reinforcing material may be performed by an oxidation method for introducing the functional group to the defect position of the nanomaterial using an acid or a radical addition method for proceeding the photocuring reaction of the nanomaterial. In addition, the functionalizing of the reinforcing material may be performed by the radical addition method, and the radical addition method may be performed by reaction with diazonium.

Disclosed is a high strength parts manufacturing apparatus for a vehicle according to an embodiment of the present invention. The manufacturing apparatus includes: a reinforcing member accommodating portion containing a reinforcing material including a nanomaterial; A base material accommodating unit accommodating a base material including at least one of a thermosetting resin and an ultraviolet curable resin; A reinforcement functionalization unit connectable with at least a portion of the reinforcement receiving portion and functionalizing the reinforcement to facilitate mixing between the base material and the reinforcement; Connectable with the reinforcing member accommodating part and the base material accommodating part, the functionalized reinforcing material is supplied from the reinforcing material accommodating part, the base material is supplied from the base material accommodating part, and the functionalized reinforcing material is applied to the base. A mixture generator for generating a mixture by mixing with a material; An injection unit connected to the mixture generation unit and having a nozzle, injecting the generated mixture into a mold through the nozzle; An electromagnetic field emitter for applying at least one of an electric field and a magnetic field to at least one end of the mold such that the injected mixture is oriented; A mold containing the injected mixture and curing the oriented mixture to produce a high strength component for a vehicle; And a control unit controlling an operation of the high strength component manufacturing apparatus for a vehicle.

In one embodiment of the invention, the control unit additionally determines the polarity of the functional group used to functionalize the reinforcement, and determines the polarity of the electric or magnetic field to be applied to one end of the mold to correspond to the determined polarity. The electromagnetic field emitter may further apply at least one of the electric field and the magnetic field to one end of the mold based on the polarity determined by the controller. Further, the control unit additionally determines the voltage of the electric field to be applied based on at least one of local stiffness, heat transfer force, conductivity and radiation shielding force required for the high strength component for the vehicle; The electromagnetic field emitter may further orient the mixture by applying an electric field according to the determined voltage to at least one end of the mold.

In one embodiment of the present invention, the mixture generating unit may generate a mixture by further mixing the nanofiller, in order to induce a depletion force on the functionalized reinforcing material.

In one embodiment of the present invention, the control unit may further control the mixture generating unit to generate the mixture while maintaining the mixing temperature in the range of 60 ° C to 180 ° C.

In one embodiment of the present invention, the control unit additionally: determines a defect position in which the lattice structure of the nanomaterial is an unfinished portion, and controls the stiffener functionalization unit to introduce a functional group at the determined defect position. can do. In addition, the reinforcing material functionalizing unit, based on the oxidation method of introducing the functional group to the defect position of the nano material using an acid or a radical addition method for proceeding the photocuring reaction of the nano material, Can be functionalized. In addition, the reinforcing material functionalizing unit may additionally functionalize the reinforcing material based on a radical addition method performed through reaction with diazonium.

In addition, in one embodiment of the present invention, the injection unit may additionally inject the mixture into the mold based on the ultrasonic dispersion method.

Further, in one embodiment of the present invention, the control unit additionally: determines a voltage of an electric field to be applied based on at least one of local stiffness, heat transfer force, conductivity and radiation shielding force required for the high strength component for the vehicle; And determine a radiation position from the mold of the electromagnetic field emitter such that an electric field according to the determined voltage is applied to at least one end of the mold, and the electromagnetic field emitter may be movable according to a control signal from the controller. .

Carbon nanotube composite material prepared by the present invention having the above configuration is very excellent in properties such as durability, wear resistance, lubricity, strength, corrosion resistance, conductivity, heat resistance and the like.

Due to the above effects, the carbon nanotube composite material prepared by the present invention may be usefully used in the field of structures such as aerospace, marine and marine fields, automobiles, sports and construction fields, and particularly useful in the automobile field. have.

The present invention is expected to have a great economic ripple effect due to the preoccupation of technology in the continuously growing global automobile composites market, and can contribute greatly to the national economy.

Various aspects are now described with reference to the drawings, wherein like reference numerals are used to refer to like components throughout. In the following examples, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it will be apparent that such aspect (s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more aspects.
1 shows an exemplary flow chart of a method for manufacturing a high strength component in accordance with one embodiment of the present disclosure.
2 shows an exemplary block diagram of a high strength component manufacturing apparatus according to one embodiment of the present disclosure.

Various embodiments and / or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it will also be appreciated by one of ordinary skill in the art that this aspect (s) may be practiced without these specific details. The following description and the annexed drawings set forth in detail certain illustrative aspects of the one or more aspects. However, these aspects are exemplary and some of the various methods in the principles of the various aspects may be used and the descriptions described are intended to include all such aspects and their equivalents.

In addition, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or”. In other words, unless specified otherwise or unambiguously in context, "X uses A or B" is intended to mean one of the natural implicit substitutions. That is, X uses A; X uses B; Or where X uses both A and B, "X uses A or B" may apply in either of these cases. Also, it is to be understood that the term "and / or" as used herein refers to and includes all possible combinations of one or more of the related items listed.

In addition, the terms "comprises" and / or "comprising" mean that such features and / or components are present, but exclude the presence or addition of one or more other features, components, and / or groups thereof. It should be understood that it does not. Also, unless otherwise specified or in the context of indicating a singular form, the singular in the specification and claims should generally be interpreted as meaning "one or more."

The objects and effects of the present disclosure and the technical configurations for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. In describing the present disclosure, when it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present disclosure, the detailed description will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present disclosure, which may be partially changed according to a user's or operator's intention or custom.

The present disclosure is not limited to the embodiments described below, but may be implemented in various different forms through combinations of the embodiments within the scope of the claims. The present embodiments are merely provided to make the present disclosure complete, and to fully convey the scope of the disclosure to those skilled in the art, and the present disclosure is defined by the scope of the claims. It is only. Therefore, the definition should be made based on the contents throughout the specification.

Hereinafter, the present disclosure will be described in detail.

1 illustrates a method of manufacturing a high strength component in accordance with one embodiment of the present invention. The steps described in FIG. 1 are exemplary and additional steps may be included in the method or some of the steps may be omitted, without departing from the spirit of the invention described herein. Each step of the method shown in FIG. 1 may be performed, for example, by a high strength component manufacturing apparatus.

The composite material in the present specification is a composite made by dispersing a nano carbon material such as carbon nanotubes into a base material such as a resin as nanocomposites, and is generally an original material (for example, a polymer or a monomer (single molecule)). Or a functional material having the properties of the filler while maintaining the properties of the oligomer). In the present specification, as a preferred embodiment for the convenience of description, a polymer is described as an example. However, embodiments for monomers or oligomers as well as polymers may also be included in the scope of the present specification.

As shown in FIG. 1, a reinforcement comprising a nano carbon material may be provided (101).

In accordance with one embodiment of the present disclosure, a high strength composite material is disclosed in which a matrix material (eg, engineering plastic) and a reinforcement (eg, nano carbon material) are mixed.

Reinforcing material (nano carbon material) according to an embodiment of the present disclosure, for example, single-walled carbon nanotubes (Single-Walled CNT), double-walled carbon nanotubes (Double-Walled CNT), multi-walled carbon nanotubes ( Multi-Walled CNT), or thin multi-walled carbon nanotubes (Thin Multi-Walled CNT) may be included, but is not limited thereto. For example, the single-walled carbon nanotubes may be single-walled carbon nanotubes manufactured by a high pressure carbon monoxide disproportionation process, an arc-discharge process, or other methods. For example, the multi-walled carbon nanotubes may be multi-walled carbon nanotubes manufactured by a CVD process or other methods.

According to embodiments of the present disclosure, when an oligomer or monomer is polymerized by a polymerization reaction, when the composite material is prepared using the functionalized nanomaterial, the binding of the polymer is because the functionalized nanomaterial is polymerized together. Carbon-based nanomaterials can be used as a skeleton in the structure, and thus have high strength characteristics when compared to general simple polymers. As described above, the nanomaterials herein may refer to carbon-based nanomaterials (ie, nano carbon-based materials). The nano carbon-based material may include, for example, hexagonal honeycomb-shaped materials through sp-type bonds between one carbon atom. Carbon nanotubes, one of the nano carbon-based materials, have a graphite sheet having a cylinder shape with a nano size diameter.

Preferably, the carbon nanotubes according to one embodiment of the present disclosure are multi-walled carbon nanotubes having a diameter of 20-200 nm and a length of 0.1 μm-200 μm or less. If the diameter of the carbon nanotubes is too small (ie, less than 20 nm) and the length is long (ie, more than 20 μm), the carbon nanotubes are dispersed in a bent form, making it difficult to adjust the orientation. In addition, when the diameter of the carbon nanotubes is large (i.e., greater than 200 nm) and short (i.e., less than 0.1 mu m), the aspect ratio becomes small and the characteristics as actual reinforcing materials are lowered.

According to one embodiment of the present disclosure, when selecting a low-cost mass-produced multi-walled carbon nanotubes when selecting the multi-walled carbon nanotubes, price competitiveness for high-strength components can be secured.

According to one embodiment of the present disclosure, a known material may be provided (102) comprising at least one of a thermosetting resin and an ultraviolet curable resin. Regarding the matrix material in the present disclosure, thermoplastic resins such as epoxy resins and unsaturated polyester resins may also be used, but in the case of plastic resins, since they themselves take the form of polymers, Therefore, it is preferable to use any form of curable resin (eg, thermosetting resin and / or ultraviolet curable resin, etc.) having a monomer or oligomer form as a base material.

In addition, the matrix material according to an embodiment of the present disclosure may be any material for minimizing the repulsive force between the interface of the carbon nanotubes and the matrix material to suppress aggregation by van der Waals bonds in the matrix material of the carbon nanotubes. It is preferable that it is curable resin of the form of.

The carbon nanotubes are agglomerated due to the strong van der Waals interaction between the tubes. These agglomeration phenomena interfere with the uniform network formation of carbon nanotubes in the composite when the composite material is manufactured. If the tube is not properly dispersed, the role of the nanotube as a filler for improving mechanical, electrical, and thermal properties cannot be expected. Therefore, evenly dispersing the aggregated tube is an important step in manufacturing the carbon nanotube composite material.

According to one embodiment of the present disclosure, there may be various ways to disperse the carbon nanotubes. For example, in order to disperse carbon nanotubes, mechanical surface modification using sonication, milling and high shear force, covalent surface modification and dispersion using chemical covalent bonding of carbon atoms and working periods by acid treatment, etc. Non-covalent surface modification by carbon nanotube surface modification can be used. Among the non-covalent surface modification methods, a method of modifying the surface of the carbon nanotubes, preferably using an amphiphilic material such as a surfactant, is the simplest and most effective. Here, the hydrophobic portion of the surfactant is adsorbed on the surface of the carbon nanotubes and the hydrophilic portion is bonded to the polar solvent so that the carbon nanotubes are dispersed in the polar solvent.

Returning to FIG. 1, a method according to one embodiment of the present disclosure may include functionalizing the reinforcement 103 to facilitate mixing between the matrix material and the reinforcement.

For example, functionalizing the reinforcement 103 may include introducing a functional group at a defect location that is a lattice unfinished portion of the nano carbon material. More specifically, the step 103 of functionalizing the reinforcement comprises: an oxidation scheme that introduces a functional group to the defect position of the nano carbon material using an acid and / or a radical for proceeding the photocuring reaction of the nano carbon material. It can be carried out in an additive manner.

In a further embodiment of the present disclosure, the step of functionalizing the reinforcement 103 is carried out in a radical addition manner, which may be carried out via reaction with diazonium.

Carbon nanotubes are very hydrophobic and have very low solubility, so that they tend to cause aggregation between carbon nanotubes. Accordingly, the present disclosure proposes a method of introducing functional groups on the surface of carbon nanotubes in order to obtain carbon nanotubes uniformly dispersed and oriented in the matrix material. The functionally introduced carbon nanotubes not only have the advantage of being uniformly dispersed and oriented, but also have the characteristic that they can be used as a polymerization skeleton by participating in the polymerization reaction when the oligomer or monomer of the matrix material is polymerized by the polymerization reaction.

Through surface functionalization of the carbon nanotubes, one or more functional groups among -OH, -COOH, -NH2, -H, -F, -O, carboxyl group, phenol group, and lactone group can be introduced to the surface of the carbon nanotubes. have. This surface functionalization can be both covalent and non-covalent bonds, and covalent bonds are more effective in terms of dispersion efficiency.

Thus, according to one embodiment of the present disclosure, the step of functionalizing the carbon nanotubes 103 as the reinforcing material is -OH, -COOH, -NH2, -H, -F, -O, carboxyl group, phenol group, and It may include the step of introducing at least one functional group selected from the group consisting of lactone groups in the defect position of the carbon nanotubes. As described above, the defect location in the present disclosure may mean a portion in which the lattice structure is not completed. In another example, the defect location may refer to a lattice structure having a free bond group.

Covalent bonding methods may be oxidation, esterification, cycloaddition, radical addition, nucleophilic addition, electrophilic addition, or the like. have.

In the oxidation method, an acid (mainly nitric acid or sulfuric acid) can be used to introduce the functional groups listed above to the surface of the carbon nanotubes, and the density of the surface functional groups can be controlled according to the treatment method.

The radical addition method may introduce the functional groups listed above to the surface of the carbon nanotubes by using a reaction with an aryl diazonium salt, a reaction with sodium nitrate, sulfuric acid, and ammonium persulfate, among which diamond It is preferable to use the reaction with zonium to functionalize the photocuring reaction.

According to one embodiment of the present disclosure, upon surface functionalization of carbon nanotubes, two or more kinds of functional groups may be introduced on one carbon nanotube surface to facilitate control of interaction with a matrix material.

Returning to FIG. 1, the method of making high strength components can include generating 104 a mixture by mixing the functionalized reinforcement with a known material.

In one embodiment of the present disclosure, generating 104 the mixture comprises: generating the mixture by further mixing nanofillers to induce a depletion force in the functionalized stiffener It may include.

According to one embodiment of the present disclosure, a small amount of one or more nanofillers may be added in addition to the carbon nanotubes to improve physical properties of the mixture.

For example, various fillers (3-50 um) of SiO 2, AIN, ceramic fillers such as MgO, h-BN fillers, and the like may be used. In the case of using such a nanofiller, it is possible to improve the cohesiveness of carbon nanotubes by the depletion force, and to have high lubricity and inert properties of salts, thereby improving moldability in manufacturing composite materials and It is possible to improve the lubricating properties, to achieve the same or more mechanical properties, such as thermal conductivity, heat resistance while reducing the content of carbon nanofillers, and to improve the dispersibility when dispersed in the mold.

In particular, in the case of h-BN filler dry lubrication characteristics can help in the separation of the mold can be improved in the molding step of the composite material manufacturing step. For example, the lubrication characteristics may be improved when applied to automobile parts, thereby contributing to improved wear resistance.

In addition, the composite material according to one embodiment of the present disclosure may further contain various additives such as antioxidants, colorants, mold release agents, lubricants and light stabilizers, and the amount of these additives used may be the end use and characteristics of the desired composite material. It can be adjusted and applied according to various factors, including.

In one embodiment of the present invention, the step of producing the mixture may include: generating the mixture while maintaining the mixing temperature in the range of 60 ° C to 180 ° C. When mixing carbon nanotubes and matrix materials (and optionally nanofillers), the melting temperature varies depending on the type of matrix material used, and the melting temperature is adjusted within the range of 60-180 ° C. If the mixing temperature of the carbon nanotube is less than 60 ℃, the matrix polymer is not sufficiently melted and may not be uniformly mixed with the carbon nanotube, and if it exceeds 180 ℃, the polymer chain is accelerated to decrease the mechanical properties of the manufactured composite material Can cause problems.

Solvents used in producing the mixture may include, but are not limited to, an aqueous solvent, an organic solvent, or an aqueous-organic mixed solvent. For example, in the auxiliary solvent, the aqueous solvent may include water or water and alcohol, and the organic solvent may include one or more organic solvents, but is not limited thereto. For example, the alcohol may be a lower alcohol having 1 to 6 carbon atoms, preferably methanol, ethanol, propanol, butanol, and the like, but is not limited thereto. For example, the organic solvent may include an aromatic solvent such as dimethylformamide (DMF), tetrahydrofuran (THF), toluene, methyl ethyl ketone (MEK), and combinations thereof, but is not limited thereto.

The method of making a high strength component may include injecting 105 the mixture produced through the above manner into a mold through a nozzle.

The method can then include applying 106 at least one of an electric field and a magnetic field to at least one end of the mold such that the injected mixture is oriented. Applying at least one of the electric and magnetic fields comprises: determining a voltage of the electric field to be applied based on at least one of local stiffness, heat transfer force, conductivity and radiation shielding force required for the high strength component for the vehicle; And orienting the mixture by applying an electric field according to the determined voltage to at least one end of the mold.

According to one embodiment of the present disclosure, the dispersion and orientation method is not particularly limited, and ultrasonic dispersion, high shear dispersion (ultrahigh pressure disperser, nanodisperser, nanodisperser, nanodisperser, homogenizer), electric field emitter orientation , And / or magnetic field emitter orientation, and the like.

As an example, the mixture may be dispersed and oriented with a predetermined electrode pattern such that the functionalized carbon nanotubes are rearranged by an electric field. After injecting the mixture into the mold, a voltage is applied in one or both directions between the spinning nozzle and the collector to obtain the carbon nanotubes in the collector in a dispersed and oriented form in the matrix. The voltage applied between the spinneret and the collector is controlled by a voltage regulator and the distance between the collector and the spinneret can be adjusted by artificially moving the collector in the horizontal direction with the spinneret. At this time, the local physical properties such as local stiffness, heat transfer, conductivity, non-conductivity, and radiation shielding can be easily changed according to the electrode pattern structure. By forming an electric field in a direct downward, oblique or arch shape, the direction in which the fine particles are rearranged, a distribution form, and the like may be varied according to the direction of the electric field.

As an example, if the mixture contains magnetic metal nanoparticles (for example, but not limited to Ni, Co, Fe, Y, Pd, Pt, Au, etc.), the magnetic field exhibiting a certain size of magnetic field in the carbon nanoparticles It can be added to disperse and orient the mixture. At this time, by controlling factors such as the strength of the magnetic field, the position of the magnetic field, and the distance from the mold to the magnet, it is possible to control the properties of the composite material. Application is possible.

In one embodiment of the present disclosure, orienting the injected and dispersed mixture uses the polarity of the electric or magnetic field to apply to one end of the mold to correspond to the polarity of the functional groups used to functionalize the carbon nanotubes. Thereby orienting the mixture.

When the dispersant is used, the type of dispersant is not particularly limited, and cations, anions, neutral surfactants, and the like may be used. When selecting a dispersant, it is preferable to select an optimal dispersant in consideration of electrostaticity with a known material.

In accordance with one embodiment of the present disclosure, as shown in FIG. 1, the method of manufacturing a high strength component may include the step 107 of curing the oriented mixture in a mold to produce a high strength component.

The method for curing the dispersed and oriented mixture is not particularly limited and includes a thermosetting method and / or a photocuring method (including an ultraviolet curing method). When selecting a curing method, it is desirable to select an optimal curing method in consideration of the type of known material.

According to the present invention, the carbon nanotubes can be uniformly dispersed and oriented in the matrix material, and thus have strength, durability, abrasion resistance, lubricity, corrosion resistance, fatigue life, impact characteristics, high temperature characteristics, electrical insulation, heat insulation, and weight reduction. It is possible to manufacture carbon nanotube composites having improved properties.

According to the production method of the present invention, a carbon nanotube composite material in which dispersion and orientation of carbon nanotubes are adjusted can be prepared, and a composite containing carbon nanotubes having excellent mechanical strength and electrical conductivity even with a small carbon nanotube content The material may be manufactured, and the manufactured composite material may be variously applied to plastic parts such as automobile interior and exterior materials and building materials.

2 shows an exemplary block diagram of a high strength component manufacturing apparatus according to one embodiment of the present disclosure.

As shown in FIG. 2, the high-strength component manufacturing apparatus 200 includes a reinforcing member accommodating part 201, a base material accommodating part 202, a reinforcing material functionalizing part 203, a mixture generating part 204, and an injecting part 205. , Mold 206, electromagnetic field emitter 207, and controller 208. The components shown in FIG. 2 are exemplary and additional components may be included in the high strength component manufacturing apparatus 200 or some of the components may be omitted.

The reinforcement receiver 201 may receive a reinforcement material including a nano carbon material. The reinforcement receiving portion 201 may have any shape and material that can accommodate the reinforcement. The reinforcing member receiving portion 201 may be in communication with the reinforcing material functionalizing portion 203, for example, through a separate channel. The reinforcement housed in the reinforcement receiver 201 may be transferred to the reinforcement functionalization unit 203 to be functionalized. Further, in a further embodiment, the functionalized stiffener may be transferred back to the stiffener receiver 201, and the functionalized stiffener transferred and stored in the stiffener receiver 201 may be delivered to the mixture generator 204. It may be. In this case, the reinforcing member receiving portion 201 and the mixture generating portion 204 may be in communication with each other through a separate channel or the like.

The reinforcement functionalization unit 203 may functionalize the reinforcement to facilitate mixing between the matrix material and the reinforcement. For example, the reinforcing material functionalizing unit 203 may functionalize the reinforcing material by introducing a functional group at a defect position where the lattice structure of the nano carbon material is incomplete. In this example, the reinforcement functionalizer 203 may further include a separate functional group receiver (not shown) and / or functional nozzle (not shown). In addition, the reinforcing material functionalizing unit 203 may additionally be based on an oxidation method for introducing the functional group to the defect position of the nano carbon material using an acid or a radical addition method for advancing the photocuring reaction of the nano carbon material. , The reinforcing material can be functionalized. In addition, the reinforcing material functionalizing unit 203 may additionally functionalize the reinforcing material based on a radical addition method performed through reaction with diazonium.

The base material receiving portion 202 may have any shape and material capable of receiving a base material such as an ultraviolet curable resin and / or a thermosetting resin. The matrix material receiver 202 may be in communication with the mixture generator 204, for example, via a separate channel. Thus, the matrix materials contained in the matrix material receiver 202 may be transferred to the mixture generator 204 for mixing with the functionalized reinforcement.

The mixture generating unit 204 is connected to the reinforcing member accommodating part 201 or the reinforcing material functionalizing part 23 and the base material accommodating part 201 to receive the functionalized reinforcing material from the reinforcing material accommodating part 201, The mixture is produced by receiving the matrix material from the matrix material receiving unit and mixing the functionalized reinforcement with the matrix material. In addition, the mixture generator 204 may generate the mixture by further mixing the nanofiller to induce a depletion force in the functionalized reinforcement. In this case, the mixture generating unit 204 may include a separate nano filler injecting unit and / or a nano filler receiving unit.

The injector 205 may be connected to the mixture generator 204 and may include a nozzle, and inject the resulting mixture into the mold through the nozzle. The injection portion 205 can have any shape with the function of injecting the mixture into the mold. The injection unit 205 may additionally inject the mixture into the mold 206 based on the ultrasonic dispersion method.

The electromagnetic field emitter 207 may apply at least one of an electric field and a magnetic field to at least one end of the mold 206 such that the injected mixture is oriented.

The mold 206 can receive the injected mixture and cure the oriented mixture to produce a high strength component for a vehicle. The mold 206 may have any shape capable of receiving and curing the mixture, for example, may have an internal shape corresponding to the shape of the high strength component to be manufactured. In addition, both ends of the mold 206 may be provided with one or more electrodes to which a voltage may be applied.

The controller 208 may control overall operations of the high strength component manufacturing apparatus 200. The controller 208 may additionally determine the polarity of the functional group used to functionalize the reinforcement, and determine the polarity of the electric or magnetic field to apply to one end of the mold 206 to correspond to the determined polarity. In this case, the electromagnetic field emitter 207 may additionally apply at least one of the electric and magnetic fields to one end of the mold 206 based on the polarity determined by the controller 208. For example, electric and magnetic fields may be applied to both ends of the mold 206.

In addition, the controller 208 may additionally determine the voltage of the electric field to be applied based on at least one of local stiffness, heat transfer force, conductivity, and radiation shielding force required for the high strength component. The electromagnetic field emitter 207 may additionally orient the mixture by applying an electric field according to the determined voltage to at least one end of the mold 206.

In one embodiment of the present disclosure, the controller 208 may additionally control the mixture generator 204 to generate the mixture while maintaining the mixing temperature within the range of 60 ° C to 180 ° C. .

In one embodiment of the present invention, the control unit is further configured to: determine a defect position in which the lattice structure of the nano carbon material is an unfinished portion, and introduce the functional group into the determined defect position. 203 can be controlled. In this case, the reinforcing material functionalizing unit 203 may further include an oxidation method for introducing the functional group to a defect position of the nano carbon material using an acid or a radical addition method for advancing the photocuring reaction of the nano carbon material. On the basis of this, the reinforcing material can be functionalized. In addition, the reinforcing material functionalizing unit 203 may additionally functionalize the reinforcing material based on a radical addition method performed through reaction with diazonium.

In addition, in one embodiment of the present invention, the injection unit 205 may have a nozzle shape, and additionally, the mixture may be injected into the mold 206 based on the ultrasonic dispersion method.

Further, in one embodiment of the present invention, the control unit 208 may additionally determine the voltage of the electric field to be applied, based on at least one of the local stiffness, heat transfer force, conductivity and radiation shielding force required for the high strength component. . In addition, the controller 208 may determine the radiation position of the electromagnetic field emitter 207 from the mold 206 such that an electric field according to the determined voltage is applied to at least one end of the mold 206, and the electromagnetic field emitter 207 may be movable according to a control signal from the controller 208. The movement of the electromagnetic field emitter 207 described above may include any type of movement, such as, for example, tilting movement, vertical movement, parallel movement, pivot movement, and the like. Movement of the field emitter 207 may include relative movement with the mold.

Embodiments described in the present disclosure or specifically described with respect to control unit 208 may be, for example, computer readable storage media or any similar storage medium through software, hardware or a combination thereof. It may be implemented by one or more processors within.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. Embodiments described in may be implemented by the controller 208 itself.

According to the software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein. Software code may be implemented in software applications written in a suitable programming language. The software code may be stored in a storage unit (not shown) and executed by the controller 208.

It is to be understood that the specific order or hierarchy of steps in the processes and methods presented is an example of exemplary approaches. Based upon design priorities, it is understood that the specific order or hierarchy of steps in the processes may be rearranged within the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, but are not meant to be limited to the specific order or hierarchy presented.

Expressions such as "steps" or "parts" described in embodiments of the present disclosure are in the form of "means", "components", "modules", "circuits" and "logics" for implementing the same functions. It may be expressed.

The description of the presented embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the generic principles defined herein may be embodied in other fields, various uses, and in various forms without departing from the scope of the invention. Can be used. Thus, the present invention should not be limited to the embodiments set forth herein but should be construed in the broadest scope consistent with the principles and novel features set forth herein.

Claims (15)

As a part manufacturing method,
Providing a reinforcement material comprising a nanomaterial;
Providing a matrix material comprising at least one of a thermosetting resin and an ultraviolet curable resin;
Functionalizing the reinforcement to facilitate mixing between the matrix material and the reinforcement;
Producing a mixture by mixing a functionalized reinforcement with said matrix material and maintaining a mixing temperature in the range of 60 ° C. to 180 ° C .;
Injecting the resulting mixture into a mold;
Applying at least one of an electric field and a magnetic field to at least one end of the mold such that the injected mixture is oriented; And
Curing the oriented mixture to produce a part;
Including,
Part manufacturing method. The method of claim 1,
Applying at least one of the electric and magnetic fields is:
Determining the polarity of the electric or magnetic field to be applied to one end of the mold to correspond to the polarity of the functional group used to functionalize the reinforcement; And
Orienting the mixture by applying an electric or magnetic field of the determined polarity to at least one end of the mold;
Including,
Part manufacturing method. The method of claim 2,
Applying at least one of the electric and magnetic fields is:
Determining a voltage of an electric field to apply based on at least one of local stiffness, heat transfer force, conductivity and radiation shielding force required for the component; And
Orienting the mixture by applying an electric field according to the determined voltage to at least one end of the mold;
Further comprising,
Part manufacturing method. The method of claim 1,
The step of producing the mixture is:
Generating a mixture by further mixing the nanofiller to cause depletion force in the functionalized stiffener;
Including,
Part manufacturing method. The method of claim 1,
Functionalizing the reinforcement may include:
At least one selected from the group consisting of -OH, -COOH, -NH2, -H, -F, -O, carboxyl group, phenol group, and lactone group in the defect position of the lattice structure of the nanomaterial Introducing a functional group;
Including,
Part manufacturing method. The method of claim 5,
Functionalizing the reinforcement may include:
It is carried out by the oxidation method of introducing the functional group to the defect position of the nanomaterial using an acid or the radical addition method for proceeding the photocuring reaction of the nanomaterial,
Part manufacturing method. The method of claim 6,
Functionalizing the reinforcement may include:
The radical addition method is performed, and the radical addition method is carried out through reaction with diazonium,
Part manufacturing method. As a part manufacturing apparatus,
A reinforcing member containing a reinforcing material including a nanomaterial;
A base material accommodating unit accommodating a base material including at least one of a thermosetting resin and an ultraviolet curable resin;
A reinforcement functionalization unit connectable with at least a portion of the reinforcement receiving portion and functionalizing the reinforcement to facilitate mixing between the base material and the reinforcement;
Connectable with the reinforcing member accommodating part or reinforcing material functionalizing part and the base material accommodating part, the functionalized reinforcing material is supplied from the reinforcing material accommodating part, the base material is supplied from the base material accommodating part, and the functionalization A mixture generator for generating a mixture by mixing the reinforcing material with the base material;
An injection unit connected to the mixture generation unit and injecting the generated mixture into a mold;
An electromagnetic field emitter for applying at least one of an electric field and a magnetic field to at least one end of the mold such that the injected mixture is oriented;
A mold to receive the injected mixture and to cure the oriented mixture to produce a part; And
A control unit for controlling the operation of the component manufacturing apparatus and controlling the mixture generating unit to generate the mixture while maintaining a mixing temperature within a range of 60 ° C to 180 ° C;
Including,
Parts manufacturing device. The method of claim 8,
The control unit additionally:
Determine the polarity of the functional groups used to functionalize the reinforcement, and
Determine the polarity of the electric or magnetic field to be applied to one end of the mold so as to correspond to the determined polarity, and
The electromagnetic field emitter additionally applies at least one of the electric and magnetic fields to one end of the mold based on the polarity determined by the controller,
Parts manufacturing device. The method of claim 9,
The control unit additionally determines a voltage of an electric field to be applied based on at least one of local stiffness, heat transfer force, conductivity and radiation shielding force required for the component; And
Wherein the electromagnetic field emitter additionally orients the mixture by applying an electric field according to the determined voltage to at least one end of the mold,
Parts manufacturing device. The method of claim 8,
The mixture generating unit generates a mixture by further mixing the nanofiller to induce a depletion force in the functionalized reinforcement,
Parts manufacturing device. The method of claim 8,
The control unit additionally:
Determine a defect position in which the lattice structure of the nanomaterial is an unfinished portion, and
Controlling the reinforcing material functionalization portion to introduce at least one functional group selected from the group consisting of -OH, -COOH, -NH 2, -H, -F, -O, carboxyl group, phenol group, and lactone group at the determined defect position; ,
Parts manufacturing device. The method of claim 12,
The reinforcing material functionalizing unit is additionally
Functionalizing the reinforcing material based on an oxidation method for introducing the functional group to the defect position of the nanomaterial using an acid or a radical addition method for proceeding the photocuring reaction of the nanomaterial,
Parts manufacturing device. The method of claim 13,
The reinforcing material functionalizing unit is additionally
Functionalizing the reinforcement based on the radical addition mode carried out through reaction with diazonium,
Parts manufacturing device. The method of claim 8,
The injection unit additionally injects the mixture into the mold based on ultrasonic dispersion,
The control unit additionally:
Determine a voltage of an electric field to apply based on at least one of local stiffness, heat transfer force, conductivity, and radiation shielding force required for the component; And
Determine a radiation location from the mold of the electromagnetic field emitter such that an electric field according to the determined voltage is applied to at least one end of the mold, and
The electromagnetic field emitter is movable in accordance with a control signal from the controller,
Parts manufacturing device.

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