Electrospinning apparatus for two-component thermosetting resin

Abstract

The present invention provides an electrospinning apparatus for a two-component thermosetting resin, comprising: a supply unit into which a two-component thermosetting resin is introduced from the outside, and which electrospins the introduced two-component thermosetting resin onto a collector base; a temperature maintaining unit which is formed such that at least a part thereof surrounds at least a part of the supply unit, so as to maintain the temperature of the two-component thermosetting resin introduced into the supply unit at a preset temperature; a stretching unit which is formed so as to surround one side of at least a part of the temperature maintaining unit, and discharges first high-temperature air supplied therein to the collector base, thereby stretching fibers electrospun by the supply unit; a plurality of turbulence units which are arranged to face each other while being spaced apart by a predetermined distance from the stretching unit, and discharge second high-temperature air supplied therein to the collector base; a power supply unit electrically connected to the supply unit and the collector base to supply power; and a control unit electrically connected to the temperature maintaining unit, the plurality of turbulence units, and the power supply unit to control operations of the temperature maintaining unit, the plurality of turbulence units, and the power supply unit.

Description

Electrospinning device for two-component thermosetting resins

[0001] The present invention relates to an electrospinning device for a two-component thermosetting resin, and more particularly, to an electrospinning device for a two-component thermosetting resin that controls and monitors the curing conditions and curing state of an electrospun two-component thermosetting resin.

[0002]

[0003] Nanofibers are ultra-fine fibers less than 1㎛ in size and are characterized by high specific surface area and porosity.

[0004] In particular, polymer-based nanofibers have a wide range of applications, not only in the medical field (biomedicine, filtration, drug delivery, tissue engineering) but also in the electronic device field (energy storage, sensors, battery separators).

[0005] Electrospinning, one of the methods for manufacturing the above-mentioned polymer-based nanofibers, involves converting a polymer solution or melt into nanofibers through an electrically charged nozzle.

[0006] Most of these electrospun nanofibers are manufactured by solution electrospinning, but there are problems such as harmful effects on producers and consumers due to residual organic solvents, and low physical properties due to the use of low molecular weight thermoplastic resins. In order to solve the above problems, when high molecular weight resins are applied, the absence of organic solvents is additionally required.

[0007] Additionally, in the case of melt electrospinning, there was a limitation on the addition of functional nanomaterials due to the high viscosity of the resin.

[0008]

[0009] (Patent Document 1) Republic of Korea Patent Publication No. 10-2021-0009915 (January 27, 2021)

[0010]

[0011] The purpose of the present invention to solve the above problem is to provide an electrospinning device for a two-component thermosetting resin, which maintains a viscosity suitable for electrospinning by supplying second high-temperature air to a portion where a fiber stretched by a stretching unit reaches a collector base during the process in which the two-component thermosetting resin electrospun from a supply unit moves toward a collector base.

[0012] In addition, an object of the present invention to solve the above-mentioned problem is to provide an electrospinning device for a two-component thermosetting resin, which controls the degree of curing of a fiber by applying heat to a fiber, excluding a Taylor cone, among the two-component thermosetting resins that are elongated during the process in which the two-component thermosetting resin electrospun from a supply unit moves toward a collector base.

[0013] In addition, an object of the present invention to solve the above problem is to provide an electrospinning device for a two-component thermosetting resin, which irradiates and detects a detection light on a Taylor cone and fiber among the two-component thermosetting resin that are elongated in the process of the two-component thermosetting resin electrospun from a supply unit moving toward a collector base, and then measures and monitors in real time the length and degree of curing of the Taylor cone based on the detected signal.

[0014]

[0015] The technical problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0016]

[0017] In order to achieve the above object, the present invention comprises: a supply unit that receives a two-component thermosetting resin from the outside and electrospun the two-component thermosetting resin into a collector base; a temperature maintaining unit that is formed to surround at least a portion of the supply unit and maintains the temperature of the two-component thermosetting resin introduced into the inside of the supply unit at a preset temperature; an elongation unit that is formed to surround at least a portion of the other side of the temperature maintaining unit and discharges first high-temperature air supplied to the inside to the collector base to elongate fibers electrospun from the supply unit; a plurality of turbulent flow units that are arranged to face each other and are spaced apart from the elongation unit by a predetermined distance and discharge second high-temperature air supplied to the inside to the collector base; a power supply unit that is electrically connected to the supply unit and the collector base to supply power; And a control unit electrically connected to the temperature maintenance unit, the plurality of turbulence units, and the power supply unit to control the operation of the temperature maintenance unit, the plurality of turbulence units, and the power supply unit is provided. An electrospinning device for a two-component thermosetting resin is characterized by including:

[0018] In addition, the configuration of the present invention for achieving the above object comprises: a supply unit that receives a two-component thermosetting resin from the outside and electrospun the introduced two-component thermosetting resin onto a collector base; a temperature maintaining unit that is formed to surround at least a portion of the supply unit and maintains the temperature of the two-component thermosetting resin introduced into the inside of the supply unit at a preset temperature; a stretching unit that is formed to surround the other side of at least a portion of the temperature maintaining unit and discharges first high-temperature air supplied inside to the collector base to stretch fibers electrospun from the supply unit; an intermediate curing unit that is located between the stretching unit and the collector base and irradiates heat to fibers stretched by the stretching unit; a power supply unit that is electrically connected to the supply unit and the collector base to supply power; And the present invention provides an electrospinning device for a two-component thermosetting resin, characterized in that it includes a control unit that is electrically connected to the temperature maintenance unit, the intermediate curing unit, and the power supply unit and controls the operations of the temperature maintenance unit, the intermediate curing unit, and the power supply unit.

[0019] In addition, the configuration of the present invention for achieving the above object comprises: a supply unit for introducing a two-component thermosetting resin from the outside and electrospinning the introduced two-component thermosetting resin onto a collector base; a temperature maintaining unit formed so as to surround at least a portion of the supply unit and maintain the temperature of the two-component thermosetting resin introduced into the inside of the supply unit at a preset temperature; a stretching unit formed so as to surround the other side of at least a portion of the temperature maintaining unit and discharging first high-temperature air supplied to the inside to the collector base to draw fibers electrospun from the supply unit; a plurality of turbulent flow units arranged to face each other and spaced apart from the stretching unit by a predetermined distance to discharge second high-temperature air supplied to the inside to the collector base; an intermediate curing unit positioned between the stretching unit and the collector base to control a curing speed of fibers drawn by the stretching unit; a power supply unit electrically connected to the supply unit and the collector base to supply power; And a control unit electrically connected to the temperature maintenance unit, the plurality of turbulent flow units, the intermediate curing unit, and the power supply unit to control the operation of the temperature maintenance unit, the plurality of turbulent flow units, the intermediate curing unit, and the power supply unit is provided. An electrospinning device for a two-component thermosetting resin is characterized by including:

[0020] In an embodiment of the present invention, it may be characterized by further including a curing measurement unit that is positioned at a predetermined distance from the path of the electrospun fiber from the supply unit and irradiates and detects detection light to the fiber electrospun from the supply unit to measure and monitor in real time the length and degree of curing of the Taylor cone among the fiber electrospun from the supply unit.

[0021] In an embodiment of the present invention, the supply unit may be characterized by including: a receiving member that receives the two-component thermosetting resin introduced from the outside and extends in the same direction as the path of the electrospun fiber from the supply unit; and a nozzle that communicates with the other side of the receiving member so as to have a diameter smaller than the diameter of the receiving member and electrospun the two-component thermosetting resin received in the receiving member to the collector base.

[0022] In an embodiment of the present invention, the temperature maintenance unit includes a housing formed to surround at least a portion of the supply unit; a cooling member communicating with an upper side of the housing and a lower side of the housing, respectively, and supplying a cooling fluid through the upper side of the housing to cool the supply unit; and a temperature sensor installed in the housing to measure a temperature of the cooling fluid flowing between the housing and the supply unit; wherein the cooling member supplies the cooling fluid between the housing and the supply unit, and circulates the cooling fluid, which cools the two-component thermosetting resin while flowing between the housing and the supply unit, so that the cooling fluid is discharged through the lower side of the housing.

[0023] In an embodiment of the present invention, an elongation hole penetrating vertically is formed in the upper portion of the elongation section so that the first high-temperature air is supplied, and the elongation section may be characterized in that it discharges the first high-temperature air through a gap between the supply section and the elongation section.

[0024] In an embodiment of the present invention, it may be characterized in that the radial distance from the other end of the supply unit to the collector base is 100 mm to 300 mm.

[0025] In an embodiment of the present invention, the two-component thermosetting resin may be characterized as being a mixture of one or two types of urethane resin and epoxy resin.

[0026] In an embodiment of the present invention, the supply unit may be characterized by including: a receiving member that receives the two-component thermosetting resin introduced from the outside and extends in the same direction as the path of the electrospun fiber from the supply unit; and a nozzle that communicates with the other side of the receiving member so as to have a diameter smaller than the diameter of the receiving member and electrospun the two-component thermosetting resin received in the receiving member to the collector base.

[0027] In an embodiment of the present invention, the temperature maintenance unit includes a housing formed to surround at least a portion of the supply unit; a cooling member communicating with an upper side of the housing and a lower side of the housing, respectively, and supplying a cooling fluid through the upper side of the housing to cool the supply unit; and a temperature sensor installed in the housing to measure a temperature of the cooling fluid flowing between the housing and the supply unit; wherein the cooling member supplies the cooling fluid between the housing and the supply unit, and circulates the cooling fluid, which cools the two-component thermosetting resin while flowing between the housing and the supply unit, so that the cooling fluid is discharged through the lower side of the housing.

[0028] In an embodiment of the present invention, an elongation hole penetrating vertically is formed in the upper portion of the elongation section so that the first high-temperature air is supplied, and the elongation section may be characterized in that it discharges the first high-temperature air through a gap between the supply section and the elongation section.

[0029] In an embodiment of the present invention, it may be characterized in that the radial distance from the other end of the supply unit to the collector base is 100 mm to 300 mm.

[0030] In an embodiment of the present invention, the two-component thermosetting resin may be characterized as being a mixture of one or two types of urethane resin and epoxy resin.

[0031] In an embodiment of the present invention, the subject of the epoxy resin may be characterized by being one or a mixture of two or more of bisphenol A type epoxy resin, bisphenol E type epoxy resin, bisphenol F type epoxy resin, bisphenol M type epoxy resin, bisphenol S type epoxy resin, and phenyl type epoxy resin.

[0032] In an embodiment of the present invention, the subject matter of the epoxy resin may be characterized as being a liquid resin having an epoxy equivalent of 170 g / eq to 300 g / eq and a viscosity of 200 cP to 8,000 cP.

[0033] In an embodiment of the present invention, the plurality of turbulence units may include a first turbulence unit disposed at a predetermined distance from the stretching unit and discharging the second high-temperature air supplied inside to the collector base; and a second turbulence unit disposed at a predetermined distance from the stretching unit while facing the first turbulence unit and discharging the second high-temperature air supplied inside to the collector base; and the control unit may be characterized in that it controls the traveling direction of the fiber stretched by the stretching unit by adjusting the angles of the first and second turbulence units so that the second high-temperature air is supplied to a portion where the fiber stretched by the stretching unit reaches the collector base.

[0034] In an embodiment of the present invention, the intermediate curing unit may be characterized in that it generates heat and controls the curing speed of the fiber drawn by the drawing unit by irradiating the heat to the fiber drawn by the drawing unit.

[0035] In an embodiment of the present invention, the curing measurement unit may be characterized by including a light source unit that is positioned to be spaced apart from a path of the electrospun fiber from the supply unit by a predetermined distance and irradiates detection light to the fiber electrospun from the supply unit; and a light detection unit that is positioned to be spaced apart from the fiber electrospun from the supply unit by a predetermined distance while facing the light source unit with respect to the fiber electrospun from the supply unit as a reference, and detects detection light that is irradiated from the light source unit and passes through the fiber electrospun from the supply unit.

[0036]

[0037] The effect of the present invention according to the above configuration is that, while the two-component thermosetting resin electrospun from the supply unit moves toward the collector base, second high-temperature air is supplied to the portion where the fiber stretched by the stretching unit reaches the collector base, thereby maintaining a viscosity suitable for electrospinning, thereby controlling the curing conditions and, at the same time, overcoming the strength limit of the thermoplastic resin and obtaining a high-strength nanofiber membrane.

[0038] In addition, the effect of the present invention according to the above configuration is that, in the process in which the two-component thermosetting resin electrospun from the supply unit moves toward the collector base, heat is applied to the fibers of the two-component thermosetting resin, excluding the Taylor cone, to control the degree of hardening of the fibers, and at the same time, the strength limit of the thermoplastic resin can be overcome, and a high-strength nanofiber membrane can be obtained.

[0039] In addition, the effect of the present invention according to the above configuration is that, in the process of the two-component thermosetting resin electrospun from the supply unit moving toward the collector base, detection light is irradiated and detected on the Taylor cone and fiber among the two-component thermosetting resin that are elongated, and then the length and degree of curing of the Taylor cone are measured and monitored in real time based on the detected signal, thereby enabling real-time monitoring of the state of the nanofibers being manufactured.

[0040]

[0041] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0042]

[0043] Figure 1 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to the first embodiment of the present invention.

[0044] Figure 2 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to a second embodiment of the present invention.

[0045] Figure 3 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to a third embodiment of the present invention.

[0046] Figure 4 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to a fourth embodiment of the present invention.

[0047] Figure 5 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to a fifth embodiment of the present invention.

[0048] Figure 6 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to the sixth embodiment of the present invention.

[0049] Figures 7 (a) and (b) are actual photographs of an electrospinning device for a two-component thermosetting resin according to the present invention.

[0050] Figures 8 (a) and (b) are images showing epoxy nanofibers manufactured by the prior art and the present invention.

[0051] Figure 9 is a graph comparing the tensile strength of nanofibers manufactured by an electrospinning device for a two-component thermosetting resin according to the present invention and thermoplastic fibers of the prior art.

[0052]

[0053] A most preferred embodiment according to the present invention comprises: a supply unit for introducing a two-component thermosetting resin from the outside and electrospinning the introduced two-component thermosetting resin onto a collector base; a temperature maintaining unit formed so as to surround at least a portion of the supply unit and maintain the temperature of the two-component thermosetting resin introduced into the inside of the supply unit at a preset temperature; an elongation unit formed so as to surround the other side of at least a portion of the temperature maintaining unit and discharging first high-temperature air supplied to the inside to the collector base to elongate fibers electrospun from the supply unit; a plurality of turbulent flow units arranged to face each other and spaced apart from the elongation unit by a predetermined distance to discharge second high-temperature air supplied to the inside to the collector base; a power supply unit electrically connected to the supply unit and the collector base to supply power; And it is characterized by including a control unit that is electrically connected to the temperature maintenance unit, the plurality of turbulence units, and the power supply unit and controls the operation of the temperature maintenance unit, the plurality of turbulence units, and the power supply unit.

[0054] In addition, a most preferred embodiment according to the present invention is characterized by including a supply unit that receives a two-component thermosetting resin from the outside and electrospun the introduced two-component thermosetting resin onto a collector base; a temperature maintaining unit that is formed so as to surround at least a portion of the supply unit and maintains the temperature of the two-component thermosetting resin introduced into the inside of the supply unit at a preset temperature; a stretching unit that is formed so as to surround the other side of at least a portion of the temperature maintaining unit and discharges first high-temperature air supplied inside to the collector base to stretch fibers electrospun from the supply unit; an intermediate curing unit that is positioned between the stretching unit and the collector base and irradiates heat to fibers stretched by the stretching unit; a power supply unit that is electrically connected to the supply unit and the collector base and supplies power; and a control unit that is electrically connected to the temperature maintaining unit, the intermediate curing unit, and the power supply unit and controls operations of the temperature maintaining unit, the intermediate curing unit, and the power supply unit.

[0055] In addition, a most preferred embodiment according to the present invention comprises: a supply unit for introducing a two-component thermosetting resin from the outside and electrospinning the introduced two-component thermosetting resin onto a collector base; a temperature maintaining unit formed so as to surround at least a portion of the supply unit and maintain the temperature of the two-component thermosetting resin introduced into the inside of the supply unit at a preset temperature; a stretching unit formed so as to surround the other side of at least a portion of the temperature maintaining unit and discharging first high-temperature air supplied to the inside to the collector base to stretch fibers electrospun from the supply unit; a plurality of turbulent flow units arranged to face each other and spaced apart from the stretching unit by a predetermined distance to discharge second high-temperature air supplied to the inside to the collector base; an intermediate curing unit positioned between the stretching unit and the collector base to control a curing speed of fibers stretched by the stretching unit; a power supply unit electrically connected to the supply unit and the collector base to supply power; And it is characterized by including a control unit that is electrically connected to the temperature maintenance unit, the plurality of turbulence units, the intermediate hardening unit, and the power supply unit and controls the operation of the temperature maintenance unit, the plurality of turbulence units, the intermediate hardening unit, and the power supply unit.

[0056]

[0057] Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention can be implemented in various different forms and is therefore not limited to the embodiments described herein. In the drawings, irrelevant parts have been omitted for clarity of description, and similar parts have been designated with similar reference numerals throughout the specification.

[0058] Throughout the specification, when a part is said to be "connected (connected, contacted, or coupled)" to another part, this includes not only cases where it is "directly connected," but also cases where it is "indirectly connected" with another part in between. Furthermore, when a part is said to "include" a component, this does not exclude other components, but rather implies that it may include other components, unless otherwise specifically stated.

[0059] The terminology used herein is merely used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, it should be understood that the terms "comprises" or "has" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0060] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0061]

[0062] The first to sixth embodiments of the present invention commonly apply a supply unit, a temperature maintenance unit, an extension unit, a power supply unit, and a control unit, but the function of the control unit may vary depending on the components applied differently to each of the first to sixth embodiments.

[0063]

[0064] 1. First Example

[0065] Hereinafter, an electrospinning device for a two-component thermosetting resin according to a first embodiment of the present invention will be described with reference to FIG. 1.

[0066] Figure 1 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to the first embodiment of the present invention.

[0067] Referring to FIG. 1, an electrospinning device (100) for a two-component thermosetting resin according to the first embodiment of the present invention includes a supply unit (110), a temperature maintenance unit (120), an elongation unit (130), a turbulence unit (140), a power supply unit (170), and a control unit (180).

[0068] The supply unit (110) receives a two-component thermosetting resin (R) from the outside and electrospun the received two-component thermosetting resin (R) onto the collector base (10).

[0069] Here, the collector base (10) is positioned perpendicular to the supply unit (110) and spaced apart from the other end of the supply unit (110) by a radial distance.

[0070] Furthermore, electrospinning involves applying a voltage that exceeds the surface tension of a polymer droplet attached to a nozzle tip, causing the droplet surface to deform into a cone-shaped shape called a Taylor cone, and fibers are ejected from the tip of the Taylor cone. The surface tension of the polymer solution droplet is important in electrospinning. At this time, the surface tension of the polymer solution is affected by viscosity.

[0071] In addition, the two-component thermosetting resin is a resin in which both the subject matter and the curing agent exist in a liquid state at room temperature and are cured at room temperature or with heat after mixing.

[0072] The use of two-component thermosetting resins for extrusion can eliminate or minimize the use of organic solvents and facilitate the application of functional additives, making it an environmentally friendly process for producing high-strength nanofibers.

[0073] The viscosity of the two-component thermosetting resin solution of the present invention may be 2,000 cp to 7,000 cp at a temperature of 25°C. More preferably, it may be 2,500 cp to 5,000 cp.

[0074] If the viscosity of the two-component thermosetting resin solution is less than 2,000 cp, the surface tension of the two-component thermosetting resin solution is low, so droplets are not formed and the solution is simply sprayed, and thus fibers may not be formed.

[0075] Meanwhile, if the viscosity of the two-component thermosetting resin solution exceeds 7,000 cp, the viscosity and surface tension are high, so that a Taylor cone is not formed in the droplet, and thus spinning does not proceed. A high voltage may be applied to form a Taylor cone, and even if a Taylor cone is formed, its length may be long and it may be captured directly in the recovery unit rather than in the fiber. In addition, the diameter and thickness of the fiber may increase, which may affect the properties of the fiber membrane.

[0076] In addition, the two-component thermosetting resin (R) is composed of a subject and a curing agent, and is a resin that exists in a liquid state and is cured immediately after mixing the subject and the curing agent.

[0077] Specifically, the two-component thermosetting resin (R) may be a mixture of one or two types of urethane resin and epoxy resin.

[0078] That is, the two-component thermosetting resin (R) may be a urethane resin, an epoxy resin, or a mixture of a urethane resin and an epoxy resin.

[0079] In urethane resins, the main component is preferably a two-component C2-C10 resin. More preferably, a C3-C8 resin is preferred. The main component within the above range has the advantage of high strength and a viscosity that is convenient for use by operators. However, there are no specific limitations as long as electrospinning is possible. The curing agent for the urethane resin may include an aromatic diamine that reacts with the isocyanate group of the main component.

[0080] The subject matter of the epoxy resin may be one or a mixture of two or more of bisphenol A type epoxy resin, bisphenol E type epoxy resin, bisphenol F type epoxy resin, bisphenol M type epoxy resin, bisphenol S type epoxy resin, and phenyl type epoxy resin.

[0081] Additionally, the subject matter of the epoxy resin may be a liquid resin having an epoxy equivalent of 170 g / eq to 300 g / eq and a viscosity of 200 cP to 8,000 cP.

[0082] In particular, it is more preferable that the subject matter of the epoxy resin has an epoxy equivalent of 180 g / eq to 220 g / eq and a viscosity of 400 cP to 1,500 cP.

[0083] If the epoxy is below the above range, the strength of the manufactured fiber may be weak and the curing time until the electrospinning time may be long, making the working time inefficient.

[0084] Meanwhile, if the epoxy resin exceeds the above range, its high viscosity can cause difficulties for workers when mixing it with the hardener, and its high initial viscosity can hinder electrospinning. In other words, an epoxy resin that satisfies the above range not only provides a viscosity that facilitates workability, but also helps improve the mechanical properties of the fiber membrane.

[0085] In an epoxy resin solution, the curing agent undergoes a curing reaction with the resin containing an epoxy group, and can be one or a mixture of polyetheramine (PEA) and cycloaliphatic amine. The curing agent preferably has a viscosity of 200 to 8,000 cP and is liquid at room temperature. However, the viscosity of the curing agent is not limited to the above range. Since the curing agent can be uniformly dissolved when mixed with the main agent, any viscosity that allows electrospinning is possible.

[0086] The above-mentioned supply unit (110) includes a receiving member and a nozzle.

[0087] The receiving member is extended in the same direction as the path of the electrospun fiber from the supply unit (110) and receives a two-component thermosetting resin (R) introduced from the outside.

[0088] The nozzle communicates with the other side of the receiving member so as to have a diameter smaller than the diameter of the receiving member, and electrosprays the two-component thermosetting resin (R) received in the receiving member to the collector base (10).

[0089] At this time, the radial distance (D) from the other end of the supply unit (110) to the collector base (10) may be 100 mm to 300 mm. More preferably, it may be 150 mm to 250 mm.

[0090] If the radiation distance (D) is less than the above range, the Taylor cone may be directly captured on the collector base (10), and if it exceeds the above range, the fiber may not touch the collector base (10) and may not be captured.

[0091] The temperature maintenance unit (120) is formed so as to surround at least a portion of the supply unit (110) to maintain the temperature of the two-component thermosetting resin (R) introduced into the supply unit (110) at a preset temperature.

[0092] Specifically, the temperature maintenance unit (120) has the function of slowing down the curing speed of a two-component thermosetting resin solution (a state in which the main agent and the curing agent are mixed) to a low temperature.

[0093] The preset temperature of the temperature maintenance unit (120) for this purpose may be set to 10°C to 30°C. More preferably, it is 15°C to 25°C. If the preset temperature is lower than 10°C, the viscosity of the two-component resin solution may increase, preventing the solution from being delivered to the nozzle tip. If the preset temperature is higher than 30°C, the curing speed of the two-component thermosetting resin solution may increase, reducing the spinning time, accelerating the solution replacement time, and causing problems such as thickening the diameter of the fibers collected on the collector base and deteriorating mechanical properties.

[0094] The above-mentioned temperature maintenance unit (120) includes a housing (121), a cooling member (122), and a temperature sensor (123).

[0095] The housing (121) is formed long so as to be parallel to the direction in which the elongated fibers are advanced, and is formed to surround at least a portion of the supply section (110).

[0096] Specifically, the housing (121) is formed to surround the receiving member except for one side of the receiving member and is formed to surround one side of the nozzle.

[0097] Accordingly, the other side of the nozzle is exposed to the outside of the housing (121).

[0098] The cooling member (122) is located outside the housing (121).

[0099] The cooling member (122) communicates with the upper side (=inlet) of the housing (121) and the lower side (=outlet) of the housing (121), respectively, and supplies cooling fluid (C) through the upper side (=inlet) of the housing to cool the supply unit (110).

[0100] Here, the cooling fluid (C) can be air or cooling water.

[0101] The cooling member (122) supplies cooling fluid (C) between the housing (121) and the supply unit (110), and circulates the cooling fluid (C) that cools the two-component thermosetting resin (R) while flowing between the housing (121) and the supply unit (110) so that it is discharged through the lower side (= outlet) of the housing (121).

[0102] The cooling element (122) for this purpose may be, for example, a chiller or a Peltier element.

[0103] In the case of a Peltier element, the cooling member (122) is attached to the outer or inner surface of the housing (121) to cool the supply unit (110), so a separate cooling fluid (C) is not required.

[0104] A temperature sensor (123) is installed in the housing (121) to measure the temperature of the cooling fluid (C) flowing between the housing (121) and the supply unit (110), and controls the temperature of the two-component thermosetting resin by providing feedback so that the temperature can be maintained at a preset temperature.

[0105] Specifically, the temperature sensor (123) can be installed on the outer or inner surface of the housing (121).

[0106] The extension part (130) is formed to surround the other side of the housing (121) and surround one side of the other side of the nozzle.

[0107] Accordingly, the other side of the nozzle is exposed to the outside of the extension part (130).

[0108] The extension unit (130) is formed to surround at least a portion of the other side of the temperature maintenance unit (120) and discharges first high-temperature air (HA1: Hot Air 1) supplied internally to the collector base (10) to extend the electrospun fiber from the supply unit (110).

[0109] More specifically, an elongation hole is formed in the upper part of the elongation unit (130) to penetrate vertically so that first high-temperature air (HA1) is supplied, and this elongation unit (130) discharges the first high-temperature air through the supply unit (110) and the elongation unit (130).

[0110] The turbulent section (140) is arranged to face each other while being spaced apart from the extension section by a predetermined distance, and discharges the second high-temperature air (HA2: Hot Air 2) supplied internally to the collector base (10), and is composed of multiple sections.

[0111] Here, the plurality of turbulent parts (140) are the first turbulent part (141) and the second turbulent part (142).

[0112] The above-mentioned turbulent section (140) includes a first turbulent section (141) and a second turbulent section (142).

[0113] The first turbulent section (141) is positioned at a predetermined distance from the extension section (130) and discharges the second high-temperature air (HA2) supplied internally to the collector base (10).

[0114] Specifically, one side of the first turbulent section (141) is positioned toward the upper left, and the other side of the first turbulent section (141) is positioned toward the lower right.

[0115] The second turbulent section (142) is positioned opposite the first turbulent section (141) and spaced a predetermined distance from the extension section (130) to discharge the second high-temperature air (HA2) supplied internally to the collector base (10).

[0116] Specifically, one side of the second turbulent section (142) is positioned toward the lower left, and the other side of the second turbulent section (142) is positioned toward the upper right.

[0117] The power supply unit (170) is electrically connected to the supply unit (110) and the collector base (10) to supply power.

[0118] Specifically, the supply unit (110) is electrically connected to the positive electrode of the power supply unit (170), and the collector base (10) is electrically connected to the negative electrode of the power supply unit (170).

[0119] The control unit (180) is electrically connected to the temperature maintenance unit (120), multiple turbulence units (140), and power supply unit (170) to control the operation of the temperature maintenance unit (120), multiple turbulence units (140), and power supply unit (170).

[0120] In particular, the control unit (170) controls the direction of travel of the fiber stretched by the stretching unit (130) by adjusting the angles of the first and second turbulent sections (141, 142) so that the second high-temperature air (HA2) is supplied to the portion where the fiber stretched by the stretching unit (130) reaches the collector base (10).

[0121]

[0122] 2. Second Example

[0123] Hereinafter, an electrospinning device for a two-component thermosetting resin according to a second embodiment of the present invention will be described with reference to FIG. 2. However, a description of components common to the first embodiment will be omitted, and components different from the first embodiment will be described in detail.

[0124] An electrospinning device for a two-component thermosetting resin according to a second embodiment of the present invention applies an intermediate curing section instead of the turbulent section disclosed in the first embodiment.

[0125] Figure 2 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to a second embodiment of the present invention.

[0126] Referring to FIG. 2, an electrospinning device (100) for a two-component thermosetting resin according to a second embodiment of the present invention includes a supply unit (110), a temperature maintenance unit (120), an elongation unit (130), an intermediate curing unit (150), a power supply unit (170), and a control unit (180).

[0127] The supply unit (110) receives a two-component thermosetting resin (R) from the outside and electrospun the received two-component thermosetting resin (R) onto the collector base (10).

[0128] At this time, the radial distance (D) from the other end of the supply unit (110) to the collector base (10) may be 100 mm to 300 mm. More preferably, it may be 150 mm to 250 mm.

[0129] Additionally, the two-component thermosetting resin (R) may be a mixture of one or two types of urethane resin and epoxy resin.

[0130] Specifically, the subject matter of the epoxy resin may be one or a mixture of two or more of bisphenol A type epoxy resin, bisphenol E type epoxy resin, bisphenol F type epoxy resin, bisphenol M type epoxy resin, bisphenol S type epoxy resin, and phenyl type epoxy resin.

[0131] Additionally, the subject matter of the epoxy resin may be a liquid resin having an epoxy equivalent of 170 g / eq to 300 g / eq and a viscosity of 200 cP to 8,000 cP.

[0132] The above-mentioned supply unit (110) includes a receiving member and a nozzle.

[0133] The receiving member is extended in the same direction as the path of the electrospun fiber from the supply unit (110) and receives a two-component thermosetting resin (R) introduced from the outside.

[0134] The nozzle communicates with the other side of the receiving member so as to have a diameter smaller than the diameter of the receiving member, and electrosprays the two-component thermosetting resin contained in the receiving member to the collector base.

[0135] For a specific description of the supply unit (110) and the receiving member and nozzle included in the supply unit (110), refer to the first embodiment described above.

[0136] The temperature maintenance unit (120) is formed so as to surround at least a portion of the supply unit (110) to maintain the temperature of the two-component thermosetting resin (R) introduced into the supply unit (110) at a preset temperature.

[0137] The temperature maintenance unit (120) for this purpose includes a housing (121), a cooling member (122), and a temperature sensor (123).

[0138] The housing (121) is formed to surround at least a portion of the supply portion (110).

[0139] The cooling member (122) communicates with the upper side of the housing (121) and the lower side of the housing, respectively, and supplies cooling fluid (C) through the upper side of the housing to cool the supply unit (110).

[0140] Here, the cooling fluid (C) can be air or cooling water.

[0141] The above-mentioned cooling member (122) supplies cooling fluid (C) between the housing (121) and the supply unit (110), and circulates the cooling fluid (C) that cools the two-component thermosetting resin (R) while flowing between the housing (121) and the supply unit (110) so that it is discharged through the lower side of the housing (121).

[0142] The cooling element (122) for this purpose may be, for example, a chiller or a Peltier element.

[0143] In the case of a Peltier element, the cooling member (122) is attached to the outer or inner surface of the housing (121) to cool the supply unit (110), so a separate cooling fluid (C) is not required.

[0144] The temperature sensor (123) is installed in the housing (121) and measures the temperature of the cooling fluid (C) flowing between the housing (121) and the supply unit (110).

[0145] Specifically, the temperature sensor (123) can be installed on the outer or inner surface of the housing (121).

[0146] For a detailed description of the temperature maintenance unit (120), the housing (121) included in the temperature maintenance unit (120), the cooling member (122), and the temperature sensor (123), refer to the first embodiment described above.

[0147] The extension unit (130) is formed to surround at least a portion of the other side of the temperature maintenance unit (120) and discharges the first high-temperature air (HA1) supplied internally to the collector base (10) to extend the electrospun fiber from the supply unit (110).

[0148] Specifically, an elongation hole penetrating vertically is formed in the upper part of the elongation unit (130) so that first high-temperature air (HA1) is supplied, and this elongation unit (130) discharges the first high-temperature air (HA1) through the supply unit (110) and the elongation unit (130).

[0149] For a detailed description of the above-mentioned extension unit (130), refer to the first embodiment described above.

[0150] The intermediate hardening section (150) is located between the elongation section (130) and the collector base (10) and applies heat to the fiber elongated by the elongation section (130).

[0151] More specifically, the intermediate curing unit (150) generates heat and controls the curing speed of the fibers drawn by the drawing unit (130) by irradiating heat to the fibers drawn by the drawing unit (130).

[0152] The intermediate hardening unit (150) for this purpose may be, for example, a lamp with high resistance and thus easy to generate heat, but is not limited thereto.

[0153] The power supply unit (170) is electrically connected to the supply unit (110) and the collector base (10) to supply power. For a detailed description of the power supply unit (170), refer to the first embodiment described above.

[0154] The control unit (180) is electrically connected to the temperature maintenance unit (120), the intermediate curing unit (150), and the power supply unit (170) to control the operations of the temperature maintenance unit (120), the intermediate curing unit (150), and the power supply unit (170).

[0155] In particular, the control unit (180) can control the intensity of the heat generation of the intermediate curing unit (150), the flashing of the heat generation, the heat generation time, the curing speed of the fiber, etc.

[0156]

[0157] 3. Third Example

[0158] Hereinafter, an electrospinning device for a two-component thermosetting resin according to a third embodiment of the present invention will be described with reference to FIG. 3.

[0159] An electrospinning device for a two-component thermosetting resin according to a third embodiment of the present invention applies the turbulent flow section of the first embodiment and the intermediate curing section of the second embodiment together with the supply section, temperature maintenance section, stretching section, power supply section, and control section commonly applied in the present invention.

[0160] Figure 3 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to a third embodiment of the present invention.

[0161] An electrospinning device (100) for a two-component thermosetting resin according to a third embodiment of the present invention includes a supply unit (110), a temperature maintenance unit (120), a stretching unit (130), a turbulent flow unit (140), an intermediate curing unit (150), a power supply unit (170), and a control unit (180).

[0162] The supply unit (110) receives a two-component thermosetting resin (R) from the outside and electrospun the received two-component thermosetting resin (R) onto the collector base (10).

[0163] At this time, the radial distance (D) from the other end of the supply unit (110) to the collector base (10) may be 100 mm to 300 mm. More preferably, it may be 150 mm to 250 mm.

[0164] Additionally, the two-component thermosetting resin (R) may be a mixture of one or two types of urethane resin and epoxy resin.

[0165] Specifically, the subject matter of the epoxy resin may be one or a mixture of two or more of bisphenol A type epoxy resin, bisphenol E type epoxy resin, bisphenol F type epoxy resin, bisphenol M type epoxy resin, bisphenol S type epoxy resin, and phenyl type epoxy resin.

[0166] Additionally, the subject matter of the epoxy resin may be a liquid resin having an epoxy equivalent of 170 g / eq to 300 g / eq and a viscosity of 200 cP to 8,000 cP.

[0167] The above-mentioned supply unit (110) includes a receiving member and a nozzle.

[0168] The receiving member is extended in the same direction as the path of the electrospun fiber from the supply unit (110) and receives a two-component thermosetting resin (R) introduced from the outside.

[0169] The nozzle communicates with the other side of the receiving member so as to have a diameter smaller than the diameter of the receiving member, and electrosprays the two-component thermosetting resin contained in the receiving member to the collector base.

[0170] For a specific description of the supply unit (110) and the receiving member and nozzle included in the supply unit (110), refer to the first embodiment described above.

[0171] The temperature maintenance unit (120) is formed so as to surround at least a portion of the supply unit (110) to maintain the temperature of the two-component thermosetting resin (R) introduced into the supply unit (110) at a preset temperature.

[0172] The temperature maintenance unit (120) for this purpose includes a housing (121), a cooling member (122), and a temperature sensor (123).

[0173] The housing (121) is formed to surround at least a portion of the supply portion (110).

[0174] The cooling member (122) communicates with the upper side of the housing (121) and the lower side of the housing, respectively, and supplies cooling fluid (C) through the upper side of the housing to cool the supply unit (110).

[0175] Here, the cooling fluid (C) can be air or cooling water.

[0176] The above-mentioned cooling member (122) supplies cooling fluid (C) between the housing (121) and the supply unit (110), and circulates the cooling fluid (C) that cools the two-component thermosetting resin (R) while flowing between the housing (121) and the supply unit (110) so that it is discharged through the lower side of the housing (121).

[0177] The cooling element (122) for this purpose may be, for example, a chiller or a Peltier element.

[0178] In the case of a Peltier element, the cooling member (122) is attached to the outer or inner surface of the housing (121) to cool the supply unit (110), so a separate cooling fluid (C) is not required.

[0179] The temperature sensor (123) is installed in the housing (121) and measures the temperature of the cooling fluid (C) flowing between the housing (121) and the supply unit (110).

[0180] Specifically, the temperature sensor (123) can be installed on the outer or inner surface of the housing (121).

[0181] For a detailed description of the temperature maintenance unit (120), the housing (121) included in the temperature maintenance unit (120), the cooling member (122), and the temperature sensor (123), refer to the first embodiment described above.

[0182] The extension unit (130) is formed to surround at least a portion of the other side of the temperature maintenance unit (120) and discharges the first high-temperature air (HA1) supplied internally to the collector base (10) to extend the electrospun fiber from the supply unit (110).

[0183] Specifically, an elongation hole penetrating vertically is formed in the upper part of the elongation unit (130) so that first high-temperature air (HA1) is supplied, and this elongation unit (130) discharges the first high-temperature air (HA1) through the supply unit (110) and the elongation unit (130).

[0184] For a detailed description of the above-mentioned extension unit (130), refer to the first embodiment described above.

[0185] The turbulent section (140) is arranged to face each other and is spaced apart from the extension section (130) by a predetermined distance, and discharges the second high-temperature air (HA2) supplied internally to the collector base (10), and is composed of multiple sections.

[0186] Here, the plurality of turbulent parts (140) are the first turbulent part (141) and the second turbulent part (142).

[0187] The turbulent section (140) includes a first turbulent section (141) and a second turbulent section (142).

[0188] The first turbulent section (141) is positioned at a predetermined distance from the extension section (130) and discharges the second high-temperature air (HA2) supplied internally to the collector base (10).

[0189] The second turbulent section (142) is positioned opposite the first turbulent section (141) and spaced a predetermined distance from the extension section (130) to discharge the second high-temperature air (HA2) supplied internally to the collector base (10).

[0190] For a detailed description of the above-mentioned turbulent section (140) and the first and second turbulent sections (141, 142) included in the turbulent section (140), refer to the first embodiment described above.

[0191] The intermediate hardening unit (150) is located between the stretching unit (130) and the collector base (10) and controls the hardening speed of the fiber stretched by the stretching unit (130).

[0192] Specifically, the intermediate hardening unit (150) generates heat and controls the hardening speed of the fiber stretched by the stretching unit (130) by irradiating heat to the fiber stretched by the stretching unit (130).

[0193] For a detailed description of the above-mentioned intermediate hardening section (150), refer to the second embodiment described above.

[0194] The power supply unit (170) is electrically connected to the supply unit (170) and the collector base (10) to supply power.

[0195] For a detailed description of the power supply unit (170) described above, refer to the second embodiment described above.

[0196] The control unit (180) is electrically connected to the temperature maintenance unit (120), multiple turbulence units (140), intermediate hardening unit (150), and power supply unit (170) to control the operation of the temperature maintenance unit (120), multiple turbulence units (140), intermediate hardening unit (150), and power supply unit (170).

[0197] First, the control unit (180) controls the direction of travel of the fiber stretched by the stretching unit (130) by adjusting the angles of the first and second turbulent sections (141, 142) so that the second high-temperature air (HA2) is supplied to the portion where the fiber stretched by the stretching unit (130) reaches the collector base (10).

[0198] In addition, the control unit (180) can control the intensity of the heat generation of the intermediate curing unit (150), the flashing of the heat generation, the heat generation time, the curing speed of the fiber, etc.

[0199]

[0200] 4. Fourth Example

[0201] Hereinafter, an electrospinning device for a two-component thermosetting resin according to a fourth embodiment of the present invention will be described with reference to FIG. 4. However, descriptions of components that are the same as those of the first embodiment will be omitted, and components that are different from those of the first embodiment will be described in detail.

[0202] An electrospinning device for a two-component thermosetting resin according to a fourth embodiment of the present invention further includes a curing measurement unit in the first embodiment.

[0203] Figure 4 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to a fourth embodiment of the present invention.

[0204] An electrospinning device (100) for a two-component thermosetting resin according to a fourth embodiment of the present invention includes a supply unit (110), a temperature maintenance unit (120), an elongation unit (130), a turbulence unit (140), a curing measurement unit (160), a power supply unit (170), and a control unit (180).

[0205] The supply unit (110) receives a two-component thermosetting resin (R) from the outside and electrospun the received two-component thermosetting resin (R) onto the collector base (10).

[0206] At this time, the radial distance (D) from the other end of the supply unit (110) to the collector base (10) may be 100 mm to 300 mm. More preferably, it may be 150 mm to 250 mm.

[0207] Additionally, the two-component thermosetting resin (R) may be a mixture of one or two types of urethane resin and epoxy resin.

[0208] Specifically, the subject matter of the epoxy resin may be one or a mixture of two or more of bisphenol A type epoxy resin, bisphenol E type epoxy resin, bisphenol F type epoxy resin, bisphenol M type epoxy resin, bisphenol S type epoxy resin, and phenyl type epoxy resin.

[0209] Additionally, the subject matter of the epoxy resin may be a liquid resin having an epoxy equivalent of 170 g / eq to 300 g / eq and a viscosity of 200 cP to 8,000 cP.

[0210] The above-mentioned supply unit (110) includes a receiving member and a nozzle.

[0211] The receiving member is extended in the same direction as the path of the electrospun fiber from the supply unit (110) and receives a two-component thermosetting resin (R) introduced from the outside.

[0212] The nozzle communicates with the other side of the receiving member so as to have a diameter smaller than the diameter of the receiving member, and electrosprays the two-component thermosetting resin contained in the receiving member to the collector base.

[0213] For a specific description of the supply unit (110) and the receiving member and nozzle included in the supply unit (110), refer to the first embodiment described above.

[0214] The temperature maintenance unit (120) is formed so as to surround at least a portion of the supply unit (110) to maintain the temperature of the two-component thermosetting resin (R) introduced into the supply unit (110) at a preset temperature.

[0215] The temperature maintenance unit (120) for this purpose includes a housing (121), a cooling member (122), and a temperature sensor (123).

[0216] The housing (121) is formed to surround at least a portion of the supply portion (110).

[0217] The cooling member (122) communicates with the upper side of the housing (121) and the lower side of the housing, respectively, and supplies cooling fluid (C) through the upper side of the housing to cool the supply unit (110).

[0218] Here, the cooling fluid (C) can be air or cooling water.

[0219] The above-mentioned cooling member (122) supplies cooling fluid (C) between the housing (121) and the supply unit (110), and circulates the cooling fluid (C) that cools the two-component thermosetting resin (R) while flowing between the housing (121) and the supply unit (110) so that it is discharged through the lower side of the housing (121).

[0220] The cooling element (122) for this purpose may be, for example, a chiller or a Peltier element.

[0221] In the case of a Peltier element, the cooling member (122) is attached to the outer or inner surface of the housing (121) to cool the supply unit (110), so a separate cooling fluid (C) is not required.

[0222] The temperature sensor (123) is installed in the housing (121) and measures the temperature of the cooling fluid (C) flowing between the housing (121) and the supply unit (110).

[0223] Specifically, the temperature sensor (123) can be installed on the outer or inner surface of the housing (121).

[0224] For a detailed description of the temperature maintenance unit (120), the housing (121) included in the temperature maintenance unit (120), the cooling member (122), and the temperature sensor (123), refer to the first embodiment described above.

[0225] The extension unit (130) is formed to surround at least a portion of the other side of the temperature maintenance unit (120) and discharges the first high-temperature air (HA1) supplied internally to the collector base (10) to extend the electrospun fiber from the supply unit (110).

[0226] Specifically, an elongation hole penetrating vertically is formed in the upper part of the elongation unit (130) so that first high-temperature air (HA1) is supplied, and this elongation unit (130) discharges the first high-temperature air (HA1) through the supply unit (110) and the elongation unit (130).

[0227] For a detailed description of the above-mentioned extension unit (130), refer to the first embodiment described above.

[0228] The turbulent section (140) is arranged to face each other and is spaced apart from the extension section (130) by a predetermined distance, and discharges the second high-temperature air (HA2) supplied internally to the collector base (10), and is composed of multiple sections.

[0229] Here, the plurality of turbulent parts (140) are the first turbulent part (141) and the second turbulent part (142).

[0230] The turbulent section (140) includes a first turbulent section (141) and a second turbulent section (142).

[0231] The first turbulent section (141) is positioned at a predetermined distance from the extension section (130) and discharges the second high-temperature air (HA2) supplied internally to the collector base (10).

[0232] The second turbulent section (142) is positioned opposite the first turbulent section (141) and spaced a predetermined distance from the extension section (130) to discharge the second high-temperature air (HA2) supplied internally to the collector base (10).

[0233] For a detailed description of the above-mentioned turbulent section (140) and the first and second turbulent sections (141, 142) included in the turbulent section (140), refer to the first embodiment described above.

[0234] The hardening measurement unit (160) is positioned at a predetermined distance from the path of the electrospun fiber from the supply unit (110), and irradiates and detects detection light onto the electrospun fiber from the supply unit (110) to measure and monitor in real time the length and hardening degree of the Taylor cone among the electrospun fiber from the supply unit (110).

[0235] In more detail, the curing measurement unit (160) detects a small amount of detection light due to light scattering caused by the movement and micro-shape of the fiber, and the longer the length of the Taylor cone, the higher the degree of curing of the two-component resin solution.

[0236] The hardening measurement unit (160) for this purpose includes a light source unit (161) and a light detection unit (162).

[0237] The light source unit (161) is positioned at a predetermined distance from the path of the electrospun fiber from the supply unit (110) and irradiates detection light onto the electrospun fiber from the supply unit (110).

[0238] For example, the light source unit (161) may be formed to be longer than half the radiation distance in order to irradiate the detection light to the electrospun Taylor cone and a portion of the fiber connected to the Taylor cone.

[0239] The light detection unit (162) is positioned so as to face the light source unit (110) with respect to the fiber electrospun from the supply unit (110) and to be spaced a predetermined distance from the fiber electrospun from the supply unit (110), and detects the detection light that is irradiated from the light source unit (161) and passes through the fiber electrospun from the supply unit (110).

[0240] Specifically, the light detection unit (162) generates a first detection signal when it detects the detection light that has passed through the Taylor cone and is irradiated from the light source unit (160).

[0241] On the other hand, the light detection unit (162) generates a second detection signal when it detects the detection light that has passed through the fiber and is irradiated from the light source unit (160).

[0242] Here, the first and second detection signals are different signals.

[0243] The function of the above-described photodetector (162) enables monitoring of the length and degree of curing of the Taylor cone in electrospun fibers. This allows the operator to monitor the progress and end point of electrospinning, thereby enabling efficient work.

[0244] The power supply unit (170) is electrically connected to the supply unit (110) and the collector base (10) to supply power.

[0245] For a detailed description of the above power supply unit (170), refer to the first embodiment described above.

[0246] The control unit (180) is electrically connected to the temperature maintenance unit (120), multiple turbulence units (140), hardening measurement unit (160), and power supply unit (170) to control the operation of the temperature maintenance unit (120), multiple turbulence units (140), hardening measurement unit (160), and power supply unit (170).

[0247] The control unit (180) controls the direction of travel of the fiber drawn by the drawing unit (130) by adjusting the angles of the first and second turbulent sections (141, 142) so that the second high-temperature air (HA2) is supplied to the portion where the fiber drawn by the drawing unit (130) reaches the collector base (10).

[0248] In addition, the control unit (180) can control the detection light intensity, detection light cycle, detection light exposure time, etc. of the curing measurement unit (160).

[0249] For a detailed description of the above-mentioned control unit (180), refer to the first embodiment described above.

[0250]

[0251] 5. Fifth Example

[0252] Hereinafter, an electrospinning device for a two-component thermosetting resin according to a fifth embodiment of the present invention will be described with reference to FIG. 5. However, descriptions of components that are the same as those of the second embodiment will be omitted, and components that are different from those of the second embodiment will be described in detail.

[0253] An electrospinning device for a two-component thermosetting resin according to a fifth embodiment of the present invention further includes a curing measurement unit according to the second embodiment.

[0254] Figure 5 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to a fifth embodiment of the present invention.

[0255] Referring to FIG. 5, an electrospinning device (100) for a two-component thermosetting resin according to a fifth embodiment of the present invention includes a supply unit (110), a temperature maintenance unit (120), a stretching unit (130), an intermediate curing unit (150), a curing measurement unit (160), a power supply unit (170), and a control unit (180).

[0256] The supply unit (110) receives a two-component thermosetting resin (R) from the outside and electrospun the received two-component thermosetting resin (R) onto the collector base (10).

[0257] At this time, the radial distance (D) from the other end of the supply unit (110) to the collector base (10) may be 100 mm to 300 mm. More preferably, it may be 150 mm to 250 mm.

[0258] Additionally, the two-component thermosetting resin (R) may be a mixture of one or two types of urethane resin and epoxy resin.

[0259] Specifically, the subject matter of the epoxy resin may be one or a mixture of two or more of bisphenol A type epoxy resin, bisphenol E type epoxy resin, bisphenol F type epoxy resin, bisphenol M type epoxy resin, bisphenol S type epoxy resin, and phenyl type epoxy resin.

[0260] Additionally, the subject matter of the epoxy resin may be a liquid resin having an epoxy equivalent of 170 g / eq to 300 g / eq and a viscosity of 200 cP to 8,000 cP.

[0261] The above-mentioned supply unit (110) includes a receiving member and a nozzle.

[0262] The receiving member is extended in the same direction as the path of the electrospun fiber from the supply unit (110) and receives a two-component thermosetting resin (R) introduced from the outside.

[0263] The nozzle communicates with the other side of the receiving member so as to have a diameter smaller than the diameter of the receiving member, and electrosprays the two-component thermosetting resin contained in the receiving member to the collector base.

[0264] For a specific description of the supply unit (110) and the receiving member and nozzle included in the supply unit (110), refer to the first embodiment described above.

[0265] The temperature maintenance unit (120) is formed so as to surround at least a portion of the supply unit (110) to maintain the temperature of the two-component thermosetting resin (R) introduced into the supply unit (110) at a preset temperature.

[0266] The temperature maintenance unit (120) for this purpose includes a housing (121), a cooling member (122), and a temperature sensor (123).

[0267] The housing (121) is formed to surround at least a portion of the supply portion (110).

[0268] The cooling member (122) communicates with the upper side of the housing (121) and the lower side of the housing, respectively, and supplies cooling fluid (C) through the upper side of the housing to cool the supply unit (110).

[0269] Here, the cooling fluid (C) can be air or cooling water.

[0270] The above-mentioned cooling member (122) supplies cooling fluid (C) between the housing (121) and the supply unit (110), and circulates the cooling fluid (C) that cools the two-component thermosetting resin (R) while flowing between the housing (121) and the supply unit (110) so that it is discharged through the lower side of the housing (121).

[0271] The cooling element (122) for this purpose may be, for example, a chiller or a Peltier element.

[0272] In the case of a Peltier element, the cooling member (122) is attached to the outer or inner surface of the housing (121) to cool the supply unit (110), so a separate cooling fluid (C) is not required.

[0273] The temperature sensor (123) is installed in the housing (121) and measures the temperature of the cooling fluid (C) flowing between the housing (121) and the supply unit (110).

[0274] Specifically, the temperature sensor (123) can be installed on the outer or inner surface of the housing (121).

[0275] For a detailed description of the temperature maintenance unit (120), the housing (121) included in the temperature maintenance unit (120), the cooling member (122), and the temperature sensor (123), refer to the first embodiment described above.

[0276] The extension unit (130) is formed to surround at least a portion of the other side of the temperature maintenance unit (120) and discharges the first high-temperature air (HA1) supplied internally to the collector base (10) to extend the electrospun fiber from the supply unit (110).

[0277] Specifically, an elongation hole penetrating vertically is formed in the upper part of the elongation unit (130) so that first high-temperature air (HA1) is supplied, and this elongation unit (130) discharges the first high-temperature air (HA1) through the supply unit (110) and the elongation unit (130).

[0278] For a detailed description of the above-mentioned extension unit (130), refer to the first embodiment described above.

[0279] The intermediate hardening unit (150) is located between the stretching unit (130) and the collector base (10) and controls the hardening speed of the fiber stretched by the stretching unit (130).

[0280] Specifically, the intermediate hardening unit (150) generates heat and controls the hardening speed of the fiber stretched by the stretching unit (130) by irradiating heat to the fiber stretched by the stretching unit (130).

[0281] For a detailed description of the above-mentioned intermediate hardening section (150), refer to the second embodiment described above.

[0282] The hardening measurement unit (160) is positioned at a predetermined distance from the path of the electrospun fiber from the supply unit (110), and irradiates and detects detection light onto the electrospun fiber from the supply unit (110) to measure and monitor in real time the length and hardening degree of the Taylor cone among the electrospun fiber from the supply unit (110).

[0283] The hardening measurement unit (160) for this purpose includes a light source unit (161) and a light detection unit (162).

[0284] The light source unit (161) is positioned at a predetermined distance from the path of the electrospun fiber from the supply unit (110) and irradiates detection light onto the electrospun fiber from the supply unit (110).

[0285] The light detection unit (162) is positioned so as to face the light source unit and be spaced a predetermined distance from the fiber electrospun from the supply unit (110) based on the fiber electrospun from the supply unit (110), and detects the detection light irradiated from the light source unit (161) and passing through the fiber electrospun from the supply unit (110).

[0286] For a detailed description of the above-described hardening measurement unit (160), the light source unit (161) and the light detection unit (162) included in the hardening measurement unit (160), refer to the second embodiment described above.

[0287] The power supply unit (170) is electrically connected to the supply unit (110) and the collector base (10) to supply power.

[0288] For a detailed description of the above power supply unit (170), refer to the first embodiment described above.

[0289] The control unit (180) is electrically connected to the temperature maintenance unit (120), the intermediate curing unit (150), the curing measurement unit (160), and the power supply unit (170) to control the operations of the temperature maintenance unit (120), the intermediate curing unit (150), the curing measurement unit (160), and the power supply unit (170).

[0290] First, the control unit (180) can control the intensity of the heat generation of the intermediate curing unit (150), the flashing of the heat generation, the heat generation time, the curing speed of the fiber, etc.

[0291] In addition, the control unit (180) can control the detection light intensity, detection light cycle, detection light exposure time, etc. of the curing measurement unit (160).

[0292] For a detailed description of the above-mentioned control unit (180), refer to the second embodiment described above.

[0293]

[0294] 6. Example 6

[0295] Hereinafter, an electrospinning device for a two-component thermosetting resin according to a sixth embodiment of the present invention will be described with reference to FIG. 6. However, descriptions of components identical to those of the third embodiment will be omitted, and components different from those of the third embodiment will be described in detail.

[0296] An electrospinning device for a two-component thermosetting resin according to the sixth embodiment of the present invention further includes a curing measurement unit according to the third embodiment.

[0297] Figure 6 is a conceptual diagram showing an electrospinning device for a two-component thermosetting resin according to the sixth embodiment of the present invention.

[0298] Referring to FIG. 6, an electrospinning device (100) for a two-component thermosetting resin according to a sixth embodiment of the present invention includes a supply unit (110), a temperature maintenance unit (120), an elongation unit (130), a turbulence unit (140), an intermediate curing unit (150), a curing measurement unit (160), a power supply unit (170), and a control unit (180).

[0299] The supply unit (110) receives a two-component thermosetting resin (R) from the outside and electrospun the received two-component thermosetting resin (R) onto the collector base (10).

[0300] At this time, the radial distance (D) from the other end of the supply unit (110) to the collector base (10) may be 100 mm to 300 mm. More preferably, it may be 150 mm to 250 mm.

[0301] Additionally, the two-component thermosetting resin (R) may be a mixture of one or two types of urethane resin and epoxy resin.

[0302] Specifically, the subject matter of the epoxy resin may be one or a mixture of two or more of bisphenol A type epoxy resin, bisphenol E type epoxy resin, bisphenol F type epoxy resin, bisphenol M type epoxy resin, bisphenol S type epoxy resin, and phenyl type epoxy resin.

[0303] Additionally, the subject matter of the epoxy resin may be a liquid resin having an epoxy equivalent of 170 g / eq to 300 g / eq and a viscosity of 200 cP to 8,000 cP.

[0304] The above-mentioned supply unit (110) includes a receiving member and a nozzle.

[0305] The receiving member is extended in the same direction as the path of the electrospun fiber from the supply unit (110) and receives a two-component thermosetting resin (R) introduced from the outside.

[0306] The nozzle communicates with the other side of the receiving member so as to have a diameter smaller than the diameter of the receiving member, and electrosprays the two-component thermosetting resin contained in the receiving member to the collector base.

[0307] For a specific description of the supply unit (110) and the receiving member and nozzle included in the supply unit (110), refer to the first embodiment described above.

[0308] The temperature maintenance unit (120) is formed so as to surround at least a portion of the supply unit (110) to maintain the temperature of the two-component thermosetting resin (R) introduced into the supply unit (110) at a preset temperature.

[0309] The temperature maintenance unit (120) for this purpose includes a housing (121), a cooling member (122), and a temperature sensor (123).

[0310] The housing (121) is formed to surround at least a portion of the supply portion (110).

[0311] The cooling member (122) communicates with the upper side of the housing (121) and the lower side of the housing, respectively, and supplies cooling fluid (C) through the upper side of the housing to cool the supply unit (110).

[0312] Here, the cooling fluid (C) can be air or cooling water.

[0313] The above-mentioned cooling member (122) supplies cooling fluid (C) between the housing (121) and the supply unit (110), and circulates the cooling fluid (C) that cools the two-component thermosetting resin (R) while flowing between the housing (121) and the supply unit (110) so that it is discharged through the lower side of the housing (121).

[0314] The cooling element (122) for this purpose may be, for example, a chiller or a Peltier element.

[0315] In the case of a Peltier element, the cooling member (122) is attached to the outer or inner surface of the housing (121) to cool the supply unit (110), so a separate cooling fluid (C) is not required.

[0316] The temperature sensor (123) is installed in the housing (121) and measures the temperature of the cooling fluid (C) flowing between the housing (121) and the supply unit (110).

[0317] Specifically, the temperature sensor (123) can be installed on the outer or inner surface of the housing (121).

[0318] For a detailed description of the temperature maintenance unit (120), the housing (121) included in the temperature maintenance unit (120), the cooling member (122), and the temperature sensor (123), refer to the first embodiment described above.

[0319] The extension unit (130) is formed to surround at least a portion of the other side of the temperature maintenance unit (120) and discharges the first high-temperature air (HA1) supplied internally to the collector base (10) to extend the electrospun fiber from the supply unit (110).

[0320] Specifically, an elongation hole penetrating vertically is formed in the upper part of the elongation unit (130) so that first high-temperature air (HA1) is supplied, and this elongation unit (130) discharges the first high-temperature air (HA1) through the supply unit (110) and the elongation unit (130).

[0321] For a detailed description of the above-mentioned extension unit (130), refer to the first embodiment described above.

[0322] The turbulent section (140) is arranged to face each other and is spaced apart from the extension section (130) by a predetermined distance, and discharges the second high-temperature air (HA2) supplied internally to the collector base (10), and is composed of multiple sections.

[0323] Here, the plurality of turbulent parts (140) are the first turbulent part (141) and the second turbulent part (142).

[0324] The turbulent section (140) includes a first turbulent section (141) and a second turbulent section (142).

[0325] The first turbulent section (141) is positioned at a predetermined distance from the extension section (130) and discharges the second high-temperature air (HA2) supplied internally to the collector base (10).

[0326] The second turbulent section (142) is positioned opposite the first turbulent section (141) and spaced a predetermined distance from the extension section (130) to discharge the second high-temperature air (HA2) supplied internally to the collector base (10).

[0327] For a detailed description of the above-mentioned turbulent section (140) and the first and second turbulent sections (141, 142) included in the turbulent section (140), refer to the first embodiment described above.

[0328] The intermediate hardening unit (150) is located between the stretching unit (130) and the collector base (10) and controls the hardening speed of the fiber stretched by the stretching unit (130).

[0329] Specifically, the intermediate hardening unit (150) generates heat and controls the hardening speed of the fiber stretched by the stretching unit (130) by irradiating heat to the fiber stretched by the stretching unit (130).

[0330] For a detailed description of the above-mentioned intermediate hardening section (150), refer to the second embodiment described above.

[0331] The hardening measurement unit (160) is positioned at a predetermined distance from the path of the electrospun fiber from the supply unit (110), and irradiates and detects detection light onto the electrospun fiber from the supply unit (110) to measure and monitor in real time the length and hardening degree of the Taylor cone among the electrospun fiber from the supply unit (110).

[0332] The hardening measurement unit (160) for this purpose includes a light source unit (161) and a light detection unit (162).

[0333] The light source unit (161) is positioned at a predetermined distance from the path of the electrospun fiber from the supply unit (110) and irradiates detection light onto the electrospun fiber from the supply unit (110).

[0334] The light detection unit (162) is positioned so as to face the light source unit and be spaced a predetermined distance from the fiber electrospun from the supply unit (110) based on the fiber electrospun from the supply unit (110), and detects the detection light irradiated from the light source unit (161) and passing through the fiber electrospun from the supply unit (110).

[0335] For a detailed description of the above-described hardening measurement unit (160), the light source unit (161) and the light detection unit (162) included in the hardening measurement unit (160), refer to the second embodiment described above.

[0336] The power supply unit (170) is electrically connected to the supply unit (110) and the collector base (10) to supply power.

[0337] For a detailed description of the above power supply unit (170), refer to the first embodiment described above.

[0338] The control unit (180) is electrically connected to the temperature maintenance unit (120), multiple turbulence units (140), intermediate curing units (150), curing measurement units (160), and power supply units (170) to control the operation of the temperature maintenance unit (120), multiple turbulence units (140), intermediate curing units (150), curing measurement units (160), and power supply units (170).

[0339] First, the control unit (180) controls the direction of travel of the fiber stretched by the stretching unit (130) by adjusting the angles of the first and second turbulent sections (141, 142) so that the second high-temperature air (HA2) is supplied to the portion where the fiber stretched by the stretching unit (130) reaches the collector base (10).

[0340] In addition, the control unit (180) can control the intensity of the heat generation of the intermediate curing unit (150), the flashing of the heat generation, the heat generation time, the curing speed of the fiber, etc.

[0341] In addition, the control unit (180) can control the detection light intensity, detection light cycle, detection light exposure time, etc. of the curing measurement unit (160).

[0342]

[0343] Figures 7 (a) and (b) are actual photographs of an electrospinning device for a two-component thermosetting resin according to the present invention.

[0344] Actual photographs of the present invention actually implemented according to the above are shown in (a) and (b) of FIG. 7.

[0345] Figures 8(a) and 8(b) are images showing epoxy nanofibers manufactured according to a conventional technique and the present invention. Figure 8(a) illustrates epoxy nanofibers manufactured according to a conventional technique. Figure 8(b) illustrates epoxy nanofibers manufactured according to the present invention.

[0346] Referring to (a) of Fig. 8, it was confirmed that the epoxy nanofibers manufactured by the prior art were collected on the collector base (10) in an uncured state, and thus the fiber shape collapsed.

[0347] Meanwhile, referring to (b) of FIG. 8, it was confirmed that the epoxy nanofibers according to the present invention exhibited a fiber shape with a nano-scale diameter as they were collected on the collector base (10) in a completely cured state.

[0348] Figure 9 is a graph comparing the tensile strength of nanofibers manufactured by an electrospinning device for a two-component thermosetting resin according to the present invention and thermoplastic fibers of the prior art.

[0349] No. Nanofiber type Fiber diameter Tensile strength Elongation 1 Thermoplastic resin (TPU) 500 nm 58 kgf / cm 2 2023%2 thermosetting resin 2.73 nm 66 kgf / cm 2 10%3 thermosetting resin (0.05 wt% additive) 1.46 nm 127 kgf / cm 2 8%4 thermosetting resin (0.1 wt% additive) 860 nm 190 kgf / cm 2 10%5 thermosetting resin (0.5 wt% additive) 615 nm 75 kgf / cm 2 13%

[0350] Referring to FIG. 9 and [Table 1], it was confirmed that the nanofibers (thermosetting resin, thermosetting resin (0.05 wt% additive), thermosetting resin (0.1 wt% additive), thermosetting resin (0.5 wt% additive) in FIG. 9) manufactured by the electrospinning device for a two-component thermosetting resin according to the present invention have a tensile strength that is about three times higher than that of the thermosetting fibers (TPU (thermosetting polyurethane) in FIG. 9) according to the prior art.

[0351]

[0352] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will readily appreciate that the present invention can be readily modified into other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single entity may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined manner.

[0353] The scope of the present invention is indicated by the claims described below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

[0354] <Explanation of symbols>

[0355] 10: Collector Base

[0356] 100: Electrospinning device for two-component thermosetting resin

[0357] 110: Supply Department

[0358] 120: Temperature maintenance unit

[0359] 121: Housing

[0360] 122: Cooling element

[0361] 123: Temperature sensor

[0362] 130: Extension Department

[0363] 140: Turbulent zone

[0364] 141: First turbulent zone

[0365] 142: Second turbulent zone

[0366] 150: Intermediate hardening zone

[0367] 160: Hardening measurement section

[0368] 161: Light source

[0369] 162: Photodetector

[0370] 170: Power supply unit

[0371] 180: Control unit

[0372] R: Two-component thermosetting resin

[0373] C: Cooling fluid

[0374] HA1: First hot air

[0375] HA2: Second high temperature air

Claims

1. A supply unit that supplies a two-component thermosetting resin from the outside and electrospun the supplied two-component thermosetting resin onto a collector base; A temperature maintaining unit formed to surround at least a portion of the supply unit and maintain the temperature of a two-component thermosetting resin introduced into the supply unit at a preset temperature; A drawing unit formed to surround at least a portion of the other side of the temperature maintaining unit and discharges first high-temperature air supplied internally to the collector base to draw fibers electrospun from the supply unit; A plurality of turbulent sections arranged facing each other and spaced apart from the above-mentioned extension section by a predetermined distance to discharge second high-temperature air supplied internally to the collector base; A power supply unit electrically connected to the above supply unit and the above collector base to supply power; and An electrospinning device for a two-component thermosetting resin, characterized by including a control unit electrically connected to the temperature maintenance unit, the plurality of turbulence units, and the power supply unit and controlling the operations of the temperature maintenance unit, the plurality of turbulence units, and the power supply unit.

2. A supply unit that supplies a two-component thermosetting resin from the outside and electrospun the supplied two-component thermosetting resin onto a collector base; A temperature maintaining unit formed to surround at least a portion of the supply unit and maintain the temperature of a two-component thermosetting resin introduced into the supply unit at a preset temperature; A drawing unit formed to surround at least a portion of the other side of the temperature maintaining unit and discharges first high-temperature air supplied internally to the collector base to draw fibers electrospun from the supply unit; An intermediate curing section positioned between the elongating section and the collector base, which irradiates heat to the fiber elongated by the elongating section; A power supply unit electrically connected to the above supply unit and the above collector base to supply power; and An electrospinning device for a two-component thermosetting resin, characterized by including a control unit electrically connected to the temperature maintenance unit, the intermediate curing unit, and the power supply unit and controlling the operations of the temperature maintenance unit, the intermediate curing unit, and the power supply unit.

3. A supply unit that supplies a two-component thermosetting resin from the outside and electrospun the supplied two-component thermosetting resin onto a collector base; A temperature maintaining unit formed to surround at least a portion of the supply unit and maintain the temperature of a two-component thermosetting resin introduced into the supply unit at a preset temperature; A drawing unit formed to surround at least a portion of the other side of the temperature maintaining unit and discharges first high-temperature air supplied internally to the collector base to draw fibers electrospun from the supply unit; A plurality of turbulent sections arranged facing each other and spaced apart from the above-mentioned extension section by a predetermined distance to discharge second high-temperature air supplied internally to the collector base; An intermediate hardening unit positioned between the elongation unit and the collector base to control the hardening speed of the fiber elongated by the elongation unit; A power supply unit electrically connected to the above supply unit and the above collector base to supply power; and An electrospinning device for a two-component thermosetting resin, characterized by including a control unit electrically connected to the temperature maintenance unit, the plurality of turbulent flow units, the intermediate curing unit, and the power supply unit to control the operations of the temperature maintenance unit, the plurality of turbulent flow units, the intermediate curing unit, and the power supply unit.

4. In any one of paragraphs 1 to 3, An electrospinning device for a two-component thermosetting resin, characterized by further comprising a curing measuring unit that is positioned at a predetermined distance from the path of progress of the electrospun fibers from the supply unit and irradiates and detects detection light onto the fibers electrospun from the supply unit, thereby measuring and monitoring in real time the length and degree of curing of the Taylor cone among the fibers electrospun from the supply unit.

5. In any one of paragraphs 1 to 3, The above supply unit, A receiving member that receives the two-component thermosetting resin that is extended in the same direction as the path of the electrospun fiber from the supply unit and flows in from the outside; and An electrospinning device for a two-component thermosetting resin, characterized by including a nozzle that communicates with the other side of the receiving member so as to have a diameter smaller than the diameter of the receiving member and electrospun the two-component thermosetting resin received in the receiving member to the collector base.

6. In any one of paragraphs 1 to 3, The above temperature maintenance unit, A housing formed to surround at least a portion of the supply portion; A cooling member that communicates with the upper side of the housing and the lower side of the housing respectively and supplies cooling fluid through the upper side of the housing to cool the supply part; and A temperature sensor is installed in the housing and measures the temperature of the cooling fluid flowing between the housing and the supply unit; An electrospinning device for a two-component thermosetting resin, characterized in that the cooling member supplies the cooling fluid between the housing and the supply unit, and circulates the cooling fluid, which cools the two-component thermosetting resin while flowing between the housing and the supply unit, so as to be discharged through the other lower side of the housing.

7. In any one of paragraphs 1 to 3, An extension hole is formed in the upper part of the extension section so that the first high temperature air is supplied, and is penetrated vertically. An electrospinning device for a two-component thermosetting resin, characterized in that the elongating unit discharges the first high-temperature air through the supply unit and the elongating unit.

8. In any one of paragraphs 1 to 3, An electrospinning device for a two-component thermosetting resin, characterized in that the radiation distance from the other end of the supply section to the collector base is 100 mm to 300 mm.

9. In any one of paragraphs 1 to 3, An electrospinning device for a two-component thermosetting resin, characterized in that the two-component thermosetting resin is a mixture of one or two kinds of urethane resin and epoxy resin.

10. In paragraph 4, The above supply unit, A receiving member that receives the two-component thermosetting resin that is extended in the same direction as the path of the electrospun fiber from the supply unit and flows in from the outside; and An electrospinning device for a two-component thermosetting resin, characterized by including a nozzle that communicates with the other side of the receiving member so as to have a diameter smaller than the diameter of the receiving member and electrospun the two-component thermosetting resin received in the receiving member to the collector base.

11. In paragraph 4, The above temperature maintenance unit, A housing formed to surround at least a portion of the supply portion; A cooling member that communicates with the upper side of the housing and the lower side of the housing respectively and supplies cooling fluid through the upper side of the housing to cool the supply part; and A temperature sensor is installed in the housing and measures the temperature of the cooling fluid flowing between the housing and the supply unit; An electrospinning device for a two-component thermosetting resin, characterized in that the cooling member supplies the cooling fluid between the housing and the supply unit, and circulates the cooling fluid, which cools the two-component thermosetting resin while flowing between the housing and the supply unit, so as to be discharged through the other lower side of the housing.

12. In paragraph 4, An extension hole is formed in the upper part of the extension section so that the first high temperature air is supplied, and is penetrated vertically. An electrospinning device for a two-component thermosetting resin, characterized in that the elongating unit discharges the first high-temperature air through the supply unit and the elongating unit.

13. In paragraph 4, An electrospinning device for a two-component thermosetting resin, characterized in that the radiation distance from the other end of the supply section to the collector base is 100 mm to 300 mm.

14. In paragraph 4, An electrospinning device for a two-component thermosetting resin, characterized in that the two-component thermosetting resin is a mixture of one or two kinds of urethane resin and epoxy resin.

15. In paragraph 9 or paragraph 14, An electrospinning device for a two-component thermosetting resin, characterized in that the subject matter of the epoxy resin is one or a mixture of two or more of bisphenol A type epoxy resin, bisphenol E type epoxy resin, bisphenol F type epoxy resin, bisphenol M type epoxy resin, bisphenol S type epoxy resin, and phenyl type epoxy resin.

16. In paragraph 9 or paragraph 14, An electrospinning device for a two-component thermosetting resin, characterized in that the subject matter of the epoxy resin is a liquid resin having an epoxy equivalent of 170 g / eq to 300 g / eq and a viscosity of 200 cps to 8,000 cps.

17. In paragraph 1 or paragraph 3, The above multiple turbulent regions are, A first turbulent section arranged at a predetermined distance from the above extension section and discharging the second high-temperature air supplied internally to the collector base; and A second turbulent section is disposed opposite the first turbulent section and spaced apart from the extension section by a predetermined distance, and discharges the second high-temperature air supplied to the inside to the collector base; An electrospinning device for a two-component thermosetting resin, characterized in that the control unit controls the direction of travel of the fiber drawn by the drawing unit by adjusting the angle of the first and second turbulent sections so that the second high-temperature air is supplied to a portion where the fiber drawn by the drawing unit reaches the collector base.

18. In paragraph 2 or 3, An electrospinning device for a two-component thermosetting resin, characterized in that the intermediate curing unit generates heat and controls the curing speed of the fiber drawn by the drawing unit by irradiating the heat to the fiber drawn by the drawing unit.

19. In paragraph 4, The above hardening measurement unit is, A light source unit that is positioned at a predetermined distance from the path of the electrospun fiber from the supply unit and irradiates detection light to the fiber electrospun from the supply unit; and An electrospinning device for a two-component thermosetting resin, characterized by including a light detection unit that is positioned so as to face the light source unit and be spaced a predetermined distance from the fibers electrospun from the supply unit based on the fibers electrospun from the supply unit, and detects light irradiated from the light source unit and passing through the fibers electrospun from the supply unit.

Images