WO2023136429A1 - 전 방향 신축성을 갖는 섬유 강화 복합체 필름 및 그 제조방법 - Google Patents
전 방향 신축성을 갖는 섬유 강화 복합체 필름 및 그 제조방법 Download PDFInfo
- Publication number
- WO2023136429A1 WO2023136429A1 PCT/KR2022/015399 KR2022015399W WO2023136429A1 WO 2023136429 A1 WO2023136429 A1 WO 2023136429A1 KR 2022015399 W KR2022015399 W KR 2022015399W WO 2023136429 A1 WO2023136429 A1 WO 2023136429A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fiber
- film
- reinforced composite
- composite film
- omnidirectional
- Prior art date
Links
- 239000003733 fiber-reinforced composite Substances 0.000 title claims abstract description 93
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 40
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 27
- 239000011151 fibre-reinforced plastic Substances 0.000 claims abstract description 27
- 239000000835 fiber Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 30
- 229920003023 plastic Polymers 0.000 claims description 30
- 239000004033 plastic Substances 0.000 claims description 30
- 239000011521 glass Substances 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 238000001723 curing Methods 0.000 claims description 17
- 239000004744 fabric Substances 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 11
- 229920003051 synthetic elastomer Polymers 0.000 claims description 10
- 239000005061 synthetic rubber Substances 0.000 claims description 10
- 239000004760 aramid Substances 0.000 claims description 9
- 229920003235 aromatic polyamide Polymers 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 9
- 238000004073 vulcanization Methods 0.000 claims description 9
- 244000043261 Hevea brasiliensis Species 0.000 claims description 7
- 229920003052 natural elastomer Polymers 0.000 claims description 7
- 229920001194 natural rubber Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 229920003002 synthetic resin Polymers 0.000 claims description 7
- 239000000057 synthetic resin Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000001802 infusion Methods 0.000 claims description 6
- 238000007641 inkjet printing Methods 0.000 claims description 6
- 239000000025 natural resin Substances 0.000 claims description 6
- 238000000206 photolithography Methods 0.000 claims description 6
- 239000010453 quartz Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 6
- 238000009787 hand lay-up Methods 0.000 claims description 5
- 238000005470 impregnation Methods 0.000 claims description 5
- 238000007639 printing Methods 0.000 claims description 5
- 238000007650 screen-printing Methods 0.000 claims description 5
- 238000003698 laser cutting Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000001029 thermal curing Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 238000000016 photochemical curing Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000004528 spin coating Methods 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 2
- 229920006255 plastic film Polymers 0.000 claims description 2
- 239000010408 film Substances 0.000 description 153
- 229920005839 ecoflex® Polymers 0.000 description 24
- 239000000758 substrate Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 239000004205 dimethyl polysiloxane Substances 0.000 description 11
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 11
- -1 polydimethylsiloxane Polymers 0.000 description 6
- 230000008602 contraction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 238000007611 bar coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000001721 transfer moulding Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 238000010129 solution processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009755 vacuum infusion Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/246—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using polymer based synthetic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/545—Perforating, cutting or machining during or after moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/685—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by laminating inserts between two plastic films or plates
- B29C70/686—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by laminating inserts between two plastic films or plates the inserts being sheets or documents, e.g. ID cards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
- B29C70/745—Filling cavities in the preformed part
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/241—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres
- C08J5/244—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres using glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2277/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as reinforcement
- B29K2277/10—Aromatic polyamides [Polyaramides] or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
- B29K2309/08—Glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0046—Elastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0077—Yield strength; Tensile strength
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
Definitions
- the present invention relates to a fiber-reinforced composite film having omnidirectional stretchability and a manufacturing method thereof, and more particularly, to a fiber-reinforced composite film having omnidirectional stretchability by using a fiber-reinforced plastic as a material of a film in which an oxetic structure is formed. It relates to a fiber-reinforced composite film having omnidirectional elasticity imparted and a manufacturing method thereof.
- the stretchable display can change its size as needed, so it can enhance the portability of portable electronic devices, and it is a technology that is attracting attention because it can be applied in various ways to the Internet of Technology and home appliances.
- wearable devices must be deformed according to movement like the skin to be stably attached to a desired location, so the use of stretchable devices is essential.
- Components of a stretchable device can be largely divided into a driving element, an electrode, and a substrate.
- the driving element which is a key component of electronic devices, is vulnerable to deformation, so glass, silicon wafer, metal foil, and fiber that provide a flat surface while minimizing deformation It is manufactured on a rigid substrate such as Fiber Reinforced Plastic (FRP).
- FRP Fiber Reinforced Plastic
- the base substrate in order to realize stretchable displays and electronic devices, the base substrate must be flexible and stretchable, and driving elements and electrodes must also have flexibility and stretchability. Therefore, in general, a method of implementing a stretchable device using an elastomer having high elasticity as a substrate has been used.
- drive elements and electrodes for stretchable displays formed on an elastomeric substrate show lower driving performance, higher resistance, and performance change when stretched than conventional elements and electrodes that are vulnerable to deformation. Therefore, in order to maximize the performance of a stretchable display, it is essential to provide a stretchable substrate capable of using high-performance devices and electrodes that are vulnerable to conventional deformation.
- a substrate composed of a deformable part and a rigid part has been studied to make a stretchable device using high-performance elements and electrodes that are vulnerable to deformation. Due to Poisson's ratio, there is a problem in that the deformation of the aspect ratio becomes prominent during stretching.
- a typical method for realizing a low or negative Poisson's ratio is to form an auxetic structure.
- the occetic structure may contain empty spaces in its structure, its process as a substrate material may be limited.
- a typical plastic material used as a substrate does not have sufficient tensile strength or has a low modulus of elasticity, there is a limit to lowering the Poisson's ratio by combining with a stretchable material even when an oxetic structure is formed.
- interfacial separation may occur during stretching due to low bonding with the stretchable material.
- An object of the present invention in order to solve the above-described problems, by using fiber-reinforced plastic as a material for a film in which an oxetic structure is formed, shape change due to Poisson's ratio is minimized during stretching and deformation in all directions is facilitated. It is to provide a fiber-reinforced composite film having omnidirectional elasticity and a manufacturing method thereof.
- the oxetic structure 100 is formed integrally with the film on the film, and the oxetic structure 100 is regularly arranged on the film.
- the space region 130 may be an empty space or may be filled with the elastic auxiliary member 20 .
- the composition of the fiber 12 may be any one or more selected from the group consisting of glass, silica, quartz, carbon, and aramid.
- the plastic is any one selected from the group consisting of synthetic resin, synthetic rubber, natural resin, and natural rubber, which is any one of thermoset, thermoplastic, photopolymerization, and room temperature vulcanization. may be ideal
- the modulus of elasticity of the fiber-reinforced plastic material may be 500 times greater than that of the elastic auxiliary member 20 .
- the elastic auxiliary member 20 is a group consisting of synthetic resin, synthetic rubber, natural resin, and natural rubber, which is any one of thermoset, thermoplastic, photopolymerization, and room temperature vulcanization. It may be any one or more selected from.
- the fiber-reinforced composite film having stretchability in all directions according to an embodiment of the present invention may have a negative Poisson's ratio.
- a method for manufacturing a fiber-reinforced composite film having omnidirectional stretchability includes preparing a fiber-reinforced plastic film; and forming the oxetic structure 100 by forming the spatial region 130 on the film.
- the manufacturing method of the fiber-reinforced composite film having omnidirectional stretchability may further include filling the space area 130 with the elastic auxiliary member 20 .
- the composition of the fiber 12 may be any one or more selected from the group consisting of glass, silica, quartz, carbon, and aramid.
- Preparing a fiber-reinforced plastic film preparing a fiber-plastic base material mixture 14 by combining the fibers 12 and the plastic base material 13; Forming the fiber-plastic matrix mixture 14 into a film form; and preparing a fiber-reinforced composite film 15 by curing the mixture molded into a film form.
- the fiber 12 may have one or more shapes selected from the group consisting of particles, yarns, single yarns, and fabrics.
- Preparing a fiber-reinforced composite film 15 by curing the mixture molded into a film form is selected from the group consisting of thermal curing, photo-curing, and room temperature vulcanization This can be done in more than one way.
- Forming the oxetic structure 100 by forming the space region 130 on the film is laser cutting, press punch, CNC (computer numerical control) processing, molding (moulding) , It may be performed by one or more methods selected from the group consisting of printing (printing) and photolithography (photolithography).
- Filling the elastic auxiliary member 20 in the space region 130; screen printing, ink-jet printing, bar coating, spin coating, impregnation ( impregnation), hand layup, autoclave, and resin infusion may be performed by one or more methods selected from the group consisting of.
- a stretchable device may include the above-described fiber-reinforced composite film or a fiber-reinforced composite film manufactured by the above-described manufacturing method.
- the fiber-reinforced composite film according to an embodiment of the present invention may have omnidirectional elasticity, and shape distortion due to the Poisson effect during stretching may be controlled.
- regions of the deformable portion and the rigid portion are divided to provide a substrate suitable for an electronic device vulnerable to deformation.
- FIG. 1 is a schematic plan view of a fiber-reinforced composite film 1 having stretchability in all directions according to an embodiment of the present invention.
- FIG. 2 is an enlarged plan view of a partial oxetic structure 100 of a fiber-reinforced composite film 1 having stretchability in all directions according to an embodiment of the present invention. it is depicted
- FIG. 3 is a plan view illustrating various types of spatial zones 130 .
- FIG. 4 is a plan view showing an example of an arrangement of spatial zones 130 in a non-orthogonal coordinate system exhibiting omnidirectional stretch characteristics.
- FIG. 5 is a flowchart illustrating a method of manufacturing a fiber-reinforced composite film 1 having omnidirectional stretchability according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram showing a step of manufacturing a fiber-reinforced composite film 15 in a method for manufacturing a fiber-reinforced composite film 1 having stretchability in all directions according to an embodiment of the present invention.
- FIG. 7 is an example of the present invention in which the fiber-reinforced composite film 15 is cut with a laser cutter 4 to form a space zone 130, and then the elastic auxiliary member ( 20) is a schematic diagram of the filling process.
- FIG. 8 is a diagram of various methods that can be used when forming a space zone 130 in a fiber-reinforced composite film 15 in a method of manufacturing a fiber-reinforced composite film 1 having stretchability in all directions according to an embodiment of the present invention ( a) ink-jet printing (b) molding (moulding) (c) photo-etching method is shown.
- FIG. 9 is a photograph showing a shape change of a fiber-reinforced composite film 1 having stretchability in all directions according to an embodiment during stretching.
- FIG. 11 is a graph showing the Poisson's ratio that changes as the fiber-reinforced composite films prepared according to Examples 3 and 4 of the present invention are stretched.
- Example 13 is a strain distribution measurement image showing the change in elongation in the film during stretching of the fiber-reinforced composite film prepared according to Example 3 of the present invention.
- Figure 14 is a strain distribution measurement photograph showing the change in elongation within the film when the film produced according to Comparative Example 1 of the present invention is stretched.
- first, second and third are used to describe, but are not limited to, various parts, components, regions, layers and/or sections. These terms are only used to distinguish one part, component, region, layer or section from another part, component, region, layer or section. Accordingly, a first part, component, region, layer or section described below may be referred to as a second part, component, region, layer or section without departing from the scope of the present invention.
- Poisson's ratio is a numerical value representing the behavior according to the stretching of the material, and means the amount of length decrease in the direction perpendicular to the stretching compared to the length increase in the stretching direction when the material is stretched ( ⁇ ). Deformation in a direction perpendicular to the elongation direction not only significantly changes the shape of the material during stretching, but also increases the rigidity of the material when forces are applied in multiple directions of two or more axes, making it difficult to deform. In general, materials tend to resist volume change and thus have a positive Poisson's ratio.
- the oxetic structure collectively refers to structures exhibiting a negative Poisson's ratio, and minimizes the deformation of the structural material during expansion and contraction through the expansion of the incision and exhibits a negative Poisson's ratio.
- % means weight %, and 1 ppm is 0.0001 weight %.
- each step in the manufacturing step may occur in a different order from the specified order unless a specific order is clearly described in context. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.
- FIG. 1 is a schematic plan view of a fiber-reinforced composite film 1 having stretchability in all directions according to an embodiment of the present invention
- FIG. 2 is a fiber-reinforced composite film having stretchability in all directions according to an embodiment of the present invention
- FIG. 4 is a plan view showing an example of an arrangement of spatial zones 130 in a non-orthogonal coordinate system showing omnidirectional stretch characteristics.
- FIGS. 1 to 4 a fiber-reinforced composite film 1 having stretchability in all directions according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4 .
- the oxetic structure 100 is formed integrally with the film on the film, and the oxetic structure 100 is on the film.
- Fiber-reinforced plastic is a composite material manufactured by reinforcing plastic with fibers 12 having high tensile strength and modulus of elasticity.
- fiber-reinforced plastic As a material for the film, the island 120, and the connection part 110, they have both high moldability and compatibility of the plastic and mechanical stiffness and tensile strength of the fiber 12 as a reinforcing member.
- the fiber-reinforced plastic has a high tensile strength capable of withstanding local stress, which is a characteristic required as a material for the oxetic structure 100, and a wide elastic range for restoring force during expansion and contraction, this is the oxetic structure 100
- the oxetic structure 100 By using it as a material for the in-island 120 and the connection part 110, it has a Poisson's ratio lower than the original Poisson's ratio of the constituent materials due to the structure in which the island 120 rotates and expands in the forward direction when the film is stretched. Since the characteristics of the oxetic structure 100 can be expressed, a negative Poisson's ratio can be obtained.
- connection part 110 is aligned with respect to at least two axes on a plane, but is not arranged in a straight line with the adjacent connection part 110 on a parallel axis. Therefore, when a tensile force is applied to the film, the connecting portion 110 tends to be arranged in the elongation direction, which applies shear stress to the island 120 and causes the island 120 to rotate. Accordingly, when the island 120 rotates, expansion occurs in a direction different from the direction in which the tensile force is applied, and a negative Poisson's ratio appears.
- the connecting portion 110 and the island 120 are bonded to each other to be continuous, and may be made of the same material.
- the fiber-reinforced plastic island 120 and the connection portion 110 may be defined as the fiber-reinforced portion 10 .
- the fiber-reinforced portion 10 has a high tensile strength of the connection portion 110 that accommodates the tension applied to the film. Strength, high modulus of elasticity of the connecting portion 110 aligned in a direction perpendicular to the tension, and high stiffness of the island 120 capable of resisting the tension are required.
- the connection part 110 When the fiber reinforcement part 10 is made of a material having low tensile strength, the connection part 110 may be damaged due to the tension applied to the connection part 110 during elongation, and thus the elasticity of the film may be impaired. In addition, when the fiber reinforced part 10 is made of a material having low stiffness, the island 120 has room to be deformed rather than rotated, and the connection part 110 aligned in a direction not parallel to the tension during rotation causes deformation. Stretchability in all directions may be greatly reduced. In the fiber-reinforced composite film 1 having omnidirectional stretchability according to an embodiment of the present invention, the fiber-reinforced portion 10 is composed of a plastic material reinforced with fibers and has high tensile strength and stiffness for the above reasons. direction elasticity.
- the connection part 110 includes a first connection part 110A aligned in a first direction (x-axis direction) and a second connection part 110B aligned in a second direction (y-axis direction).
- first connection parts 110A may be aligned along the imaginary first direction (x-axis direction) axes I and II, and adjacent connection parts 110 on parallel axes in the same island 120 are the same as each other. They may be both oriented and not aligned on the same axis.
- tension is applied to the first connection portion 110A, and adjacent connection portions 110 contact the first island 120A at different axes I and II. There is a shear stress.
- the first island 120A may rotate along the first virtual auxiliary axis 121A due to the shear stress generated, and at this time, the adjacent second island 120B rotates along the second virtual auxiliary axis 121B.
- the direction of rotation may be different. Accordingly, rotation of the island 120 expands the spatial region 130 and expands the film in all directions. Also, due to the structure in which the area of the spatial region 130 is reduced and the island 120 rotates even when the film is shrunk, the entire film may exhibit omnidirectional shrinkage characteristics. Accordingly, the fiber-reinforced composite film 1 having omnidirectional stretchability according to an embodiment of the present invention may have a negative Poisson's ratio through the above-described omnidirectional stretching behavior.
- the space zone 130 is formed as a single closed curve, has an effective area, may be arranged along an imaginary axis in two or more different directions, and the space zone 130 is spaced apart from each other by a predetermined distance, thereby forming the connection part 110. can do.
- the space region 130 may be a geometric figure formed of a single closed curve, for example, a polygon, a circle, an ellipse, or a mixture and transformation thereof.
- the shape of the connection part 110 and the island 120 is determined by forming the space zone 130, and the shape of the space zone 130 is such that when the space zone 130 is stretched, the connection part 110 receives tension in the extension direction to form the island 120.
- a structure capable of rotating it is not necessarily limited to these examples as long as the film can exhibit omnidirectional stretchability.
- the space zone 130 may be arranged along each axis even in a non-orthogonal coordinate system in which a first axis (x axis) and a second axis (y axis) form an angle of 60 degrees, and up and down along each axis. It can be arranged in an inverted form. This arrangement may form the connecting portion 110 and the island 120 as described above, and each island 120 may rotate around the virtual auxiliary axis 121 when stretched and expand the film. . In addition to the examples shown in FIGS.
- zones having two or more different shapes when the pattern of the connection part 110 and the island 120 due to the arrangement of the zones can fill the plane, zones having two or more different shapes can be mixed, , may be a pattern in which the space zones 130 are aligned along two or more axes in different directions.
- the space zone 130 may be a pattern arranged along a spherical coordinate system or a curved coordinate system, and may be arranged in three dimensions.
- the space region 130 may be an empty space or may be filled with the elastic auxiliary member 20 .
- the fiber-reinforced composite film having omnidirectional elasticity according to an embodiment of the present invention has an oxextic structure 100, so that the tension applied to the connection part 110 and the connection part 110 ), and can have a negative Poisson's ratio.
- a continuous flat surface may be provided to the film, thereby providing structural characteristics suitable as a substrate for a stretchable device. If the film is not provided with such a continuous and flat surface, there are disadvantages in that it is difficult to use some processes such as microprocessing and solution processing as a substrate, which may limit device performance and reliability. As stretching and contraction are repeated, fatigue accumulates and contracts Reliability problems such as loss of restoring force or fatigue failure may occur. Therefore, in order to use the film as a substrate for fabricating high-performance devices and a reliable stretchable substrate, inserting the stretchable auxiliary member 20 is more preferable. In addition, as will be described later, the Poisson's ratio can be controlled by adjusting the difference in modulus of elasticity between the fiber-reinforced plastic material and the elastic auxiliary member 20 .
- the composition of the fiber 12 may be any one or more selected from the group consisting of glass, silica, carbon, quartz, and aramid. Specifically, it may be glass or aramid.
- the plastic reinforced with the fibers of the composition has high tensile strength and mechanical rigidity, so that the film is less deformed during stretching and can impart structural stability to the film.
- the plastic is any one selected from the group consisting of synthetic resin, synthetic rubber, natural resin, and natural rubber, which is any one of thermoset, thermoplastic, photopolymerization, and room temperature vulcanization. may be ideal
- the plastic may be, specifically, synthetic rubber, and more specifically, PDMS (polydimethylsiloxane) or Ecoflex. Since these plastics have high toughness and a wide elastic recovery area, the fiber-reinforced composite film including them can be used as a reliable stretchable substrate that can be easily recovered from physical stress factors such as repeated bending and stretching.
- the modulus of elasticity of the fiber-reinforced plastic material may be 500 times greater than that of the elastic auxiliary member 20 .
- the rotation of the island 120 causes the space region 130 to expand when the film is stretched, and at this time, the elastic auxiliary member 20 is stretched.
- the elastic restoring force to be contracted acts in the direction of resisting the elongation of the film.
- the rotational force of the island 120 increases the elasticity of the elastic auxiliary member 20. It is dominant over the restoring force and can represent a negative Poisson's ratio. For example, referring to FIG.
- the Poisson's ratio may gradually increase as the difference in modulus of elasticity between the fiber reinforcement part 10 and the elastic auxiliary member 20 decreases. If the difference between the modulus of elasticity of the fiber-reinforced part 10 and the modulus of elasticity of the elastic auxiliary member 20 is too small, the film will exhibit a Poisson's ratio having a positive value but smaller than the original elastic modulus of the elastic auxiliary member 20.
- the elastic auxiliary member 20 is a group consisting of synthetic resin, synthetic rubber, natural resin, and natural rubber, which is any one of thermoset, thermoplastic, photopolymerization, and room temperature vulcanization. It may be any one or more selected from.
- Synthetic rubber includes butadiene- rubber, chloroprene- rubber, butyl rubber, ethylene- rubber, isoprene- rubber, urethane- rubber and silicone-based ( It may be at least one selected from the group consisting of silicone-) rubber, and the silicone-based rubber may be PDMS (polydimethylsiloxane) or Ecoflex. Natural rubber may be latex.
- the synthetic resin may be at least one selected from the group consisting of polypropylene, polyethylene, polycarbonate, vinyl (polyvinylchloride), and ABS (acrylonitrile-butadiene-styrene).
- the elastic auxiliary member 20 may be, specifically, synthetic rubber, more specifically, silicone-based rubber, and more specifically, Ecoflex.
- the stretchable material may be a gel or hydrogel.
- the elastic auxiliary member 20 may be, specifically, synthetic rubber, and more specifically, PDMS or Ecoflex.
- the film can be smoothly restored when the tensile force applied to the fiber-reinforced composite film including the same is removed, and has a low modulus of elasticity, so that the fiber-reinforced composite film When the film is stretched, the elastic restoring force that is induced in a direction perpendicular to the stretching direction and hinders the stretching can be minimized.
- FIG. 5 is a flow chart showing a method for manufacturing a fiber-reinforced composite film 1 having omnidirectional stretchability according to an embodiment of the present invention
- FIG. 6 is a fiber-reinforced composite film 1 having stretchability in omnidirectional directions according to an embodiment of the present invention. It shows a schematic view of the step of manufacturing the fiber-reinforced composite film 15 in the manufacturing method of the film 1, and
- FIG. 7 is a laser cutting machine 4 in one embodiment of the present invention. After forming the space zone 130 by cutting, it shows a schematic diagram of a process of filling the space zone 130 with the elastic auxiliary member 20 in a roll lamination method, and FIG.
- a method for manufacturing a fiber-reinforced composite film 1 having omnidirectional stretchability includes preparing a fiber-reinforced plastic film; forming an occetic structure (100) by forming a void region (130) on the film; and filling the space area 130 with the elastic auxiliary member 20 .
- the composition of the fiber 12 may be any one or more selected from the group consisting of glass, silica, quartz, carbon, and aramid.
- Manufacturing a fiber-reinforced plastic film hand layup, vacuum bag molding, infusion, vacuum infusion, ink-jet printing , resin transfer molding (resin transfer molding) and can be carried out by one or more methods selected from the group consisting of screen printing (screen printing), if it does not deviate from the manufacturing method of conventional fiber reinforced plastics (FRP) , but not limited thereto.
- preparing a fiber-reinforced plastic film may be performed by a vacuum bag molding method.
- Preparing a plastic film reinforced with fibers preparing a fiber-plastic base material mixture 14 by combining fibers and a plastic base material 13; Forming the fiber-plastic matrix mixture 14 into a film form; and preparing a fiber-reinforced composite film 15 by curing the mixture molded into a film form.
- the fiber 12 may have one or more shapes selected from the group consisting of particles, yarns, single yarns, and fabrics. Specifically, cloth, nonwoven fabric, mesh, beads, powder, flake, uni-directional fiber, fiber mat, It may be one or more types selected from the group consisting of chopped fiber and milled fiber, but is not limited thereto.
- the support plate may be flat or curved depending on the purpose, may be smooth or rough, may have a surface shape including a structure, and may be released or bonded to a film to be manufactured.
- Molding the fiber-plastic base material mixture 14 into a film form includes placing the fiber-plastic base material mixture 14 between support plates and then compressing the fiber-plastic base material mixture 14 with a compressor 3 to form a surface suitable for the purpose. can do.
- Forming a surface suitable for the purpose by placing the fiber-plastic base material mixture 14 between the support plates and then compressing it with the compressor 3; may be performed in a vacuum state, high temperature and high pressure conditions.
- Separating the manufactured fiber-reinforced composite film 15 from the support plate may be performed by a physical or chemical method, and specifically, may be performed by a simple desorption, heat desorption, or laser lift off method. However, it is not limited thereto.
- Preparing a fiber-reinforced composite film 15 by curing the mixture molded into a film form is selected from the group consisting of thermal curing, photo-curing, and room temperature vulcanization It may be performed in one or more ways, but is not limited thereto.
- preparing the fiber-reinforced composite film 15 by curing the mixture molded into a film form may include a temporary curing step of not completely curing.
- Forming the oxetic structure 100 by forming the space region 130 on the film is laser cutting, press punch, CNC (computer numerical control) processing, molding (moulding) , It may be performed by one or more methods selected from the group consisting of printing (printing) and photolithography (photolithography), but is not limited thereto.
- Filling the elastic auxiliary member 20 in the space region 130; screen printing, ink-jet printing, bar coating, spin coating, impregnation ( Impregnation), hand layup (hand layup), autoclave (autoclave) and resin infusion (resin infusion) may be performed by one or more methods selected from the group consisting of, but is not limited thereto.
- a stretchable device may include the above-described fiber-reinforced composite film or a fiber-reinforced composite film manufactured by the above-described manufacturing method.
- the above-described fiber-reinforced composite film or the fiber-reinforced composite film manufactured by the above-described manufacturing method has elasticity in all directions, and the deformation applied to the island 120 during expansion and contraction is minimized due to the high stiffness of the fiber-reinforced plastic, so the island 120 ), it is possible to form an electronic element sensitive to strain. Therefore, the stretchable device of the present invention has an excellent effect of preventing performance change of electronic devices such as sensors, optoelectronic devices, thin film transistors, and displays.
- E-glass fabric (glass fabric, Nittobo, Japan) with a thickness of 25 ⁇ m were impregnated with a pre-curing solution of PDMS (Sylgard184 TM , Dow Corning, USA), and then placed between release-treated glass support plates and vacuumed. Air bubbles were removed by pressing. Thereafter, the glass fiber-PDMS mixture was thermally cured at 120° C. for 30 minutes to obtain a fiber-reinforced composite film (elastic modulus: 6 GPa). The cured fiber-reinforced composite film was detached from the support plate and then cut with a laser cutter 4 to form a space region 130 to prepare a film.
- PDMS Polylgard184 TM TM , Dow Corning, USA
- the space zone 130 has a rectangular shape of 3.2 mm in the length direction and 0.4 mm in the width direction, and is designed to be rotated at an angle of 90 degrees and separated from each other by 0.4 mm along the x-axis and y-axis.
- a sheet of aramid fabric (Kolon, Korea) with a thickness of 300 ⁇ m is impregnated with an ecoflex (Ecoflex TM , Smooth-on, USA) solution before curing, then placed between release-treated glass support plates and hot pressed. It was cured at 120° C. and 50 bar for 2 hours to obtain a fiber-reinforced composite film (elastic modulus: 6.7 GPa).
- the cured fiber-reinforced composite film was detached from the support plate and then cut with a laser cutter 4 to form a space zone 130 to prepare a written note.
- the space zone 130 has a rectangular shape of 8 mm in the length direction and 1 mm in the width direction, and is designed to be rotated at an angle of 90 degrees and separated by 1 mm from each other along the x-axis and y-axis.
- E-glass fabric (glass fabric, Nittobo, Japan) with a thickness of 25 ⁇ m were impregnated with a pre-curing solution of PDMS (Sylgard184 TM , Dow Corning, USA), and then placed between release-treated glass support plates and vacuumed. Air bubbles were removed by pressing. Thereafter, the glass fiber-PDMS mixture was thermally cured at 120° C. for 30 minutes to obtain a fiber-reinforced composite film (elastic modulus: 6 GPa). The cured fiber-reinforced composite film was detached from the support plate and then cut with a laser cutter 4 to form a space zone 130.
- PDMS Polylgard184 TM TM , Dow Corning, USA
- the space zone 130 has a rectangular shape of 3.2 mm in the length direction and 0.4 mm in the width direction, and is designed to be rotated at an angle of 90 degrees and separated from each other by 0.4 mm along the x-axis and y-axis.
- Ecoflex Ecoflex TM , Smooth-on, USA
- a release-treated glass support plate is covered and cured at room temperature for 24 hours to obtain a film (elastic modulus of the Ecoflex part: 30 kPa). ) was prepared
- a sheet of aramid fabric (Kolon, Korea) with a thickness of 300 ⁇ m is impregnated with an ecoflex (Ecoflex TM , Smooth-on, USA) solution before curing, then placed between release-treated glass support plates and hot pressed. It was cured at 120° C. and 50 bar for 2 hours to obtain a fiber-reinforced composite film (elastic modulus: 6.7 GPa). The cured fiber-reinforced composite film was detached from the support plate and then cut with a laser cutter 4 to form a space zone 130.
- Ecoflex TM ecoflex TM , Smooth-on, USA
- the space zone 130 has a rectangular shape of 8 mm in the length direction and 1 mm in the width direction, and is designed to be rotated at an angle of 90 degrees and separated by 1 mm from each other along the x-axis and y-axis.
- Ecoflex Ecoflex TM , Smooth-on Company, USA
- a release film was removed to prepare a film (elastic modulus of the Ecoflex part: 30 kPa).
- a film (elastic modulus: 1 MPa) was fabricated by a thermal curing method using PDMS (Sylgard184 TM , Dow Corning, USA) having a thickness of 200 ⁇ m, and cut with a laser cutter 4 to form a spatial region 130.
- the space zone 130 has a rectangular shape of 3.2 mm in the length direction and 0.4 mm in the width direction, and is designed to be rotated at an angle of 90 degrees and separated from each other by 0.4 mm along the x-axis and y-axis.
- a space zone 130 was formed by cutting with a laser cutter 4 on one sheet of CPI film (Kolon, Korea) having a thickness of 80 ⁇ m (elastic modulus: 7 GPa).
- the space zone 130 has a rectangular shape of 3.2 mm in the length direction and 0.4 mm in the width direction, and is designed to be rotated at an angle of 90 degrees and separated from each other by 0.4 mm along the x-axis and y-axis.
- ecoflex Ecoflex TM , Smooth-on, USA
- a release-treated glass support plate is covered and cured at room temperature for 24 hours to obtain a film (elastic modulus of the Ecoflex part: 30 kPa). ) was prepared.
- the film of Example 3 was stretched by applying tension (P x ) in the first axial direction (x-axis direction), and the change in structure was observed.
- P x tension
- FIG. 9 it can be seen that the film of Example 3 exhibits omnidirectional stretch characteristics and there is no significant change in the structure of the island 120 where the electronic device is manufactured, so it is vulnerable to conventional deformation on the film, but has high performance. It can be seen that even if a phosphorus electronic device is manufactured, deterioration in performance and reliability of the electronic device can be solved.
- the Poisson's ratio was calculated from the strains in the horizontal and vertical axes obtained through digital image correlation (Aramis Professional program, Gom, Germany) from high-resolution images measured with a digital camera (800D, Canon, Japan).
- the standard mark of the strain rate was marked with a commercially available marker pen at both ends of the horizontal axis and the vertical axis across the center of the specimen, and a universal testing machine (AGS-X, Shimadzu, Japan ) was used to elongate the specimen.
- it shows a Poisson's ratio close to -1, which is an ideal Poisson's ratio value it was confirmed that it has excellent forward elasticity.
- the elongation rate is negative because all of the elongation areas show a negative Poisson's ratio.
- Comparative Example 1 shows a value close to 0.5 as a Poisson's ratio regardless of the elongation rate as a single film, so it can be confirmed that the stretchability in all directions is poor.
- Example 3 and Comparative Example 1 were stretched by applying tension (P x ) in the first axial direction (x-axis direction), and the change in elongation in the film was measured using a digital image correlation method in the same manner as in Experimental Example 2
- the results are shown in FIGS. 13 and 14, respectively.
- FIG. 13 in the case of Example 3, almost no deformation was applied to the island 120, and it was confirmed that the film was uniformly expanded even after stretching, indicating that it had excellent omnidirectional elasticity.
- FIG. 14 in the case of Comparative Example 1, it can be seen that the central portion of the film is contracted and distorted concavely due to the high Poisson's ratio. found to be unsuitable for use.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims (15)
- 필름 상에 상기 필름과 일체형으로 옥세틱 구조(100)가 형성되고,상기 옥세틱 구조(100)는,상기 필름 상에 규칙적으로 배열된 복수 개의 단일 폐곡선 형태의 공간 구역(130);상기 공간 구역(130)에 의해 둘러싸여 형성되는 아일랜드(120); 및상기 공간 구역(130)에 의해 일정한 간격으로 형성되어 인접한 아일랜드(120)를 연결해 주는 연결부(110);를 포함하고,상기 필름, 아일랜드(120) 및 연결부(110)는 섬유로 강화된 플라스틱 소재이고,상기 공간 구역(130)은 빈 공간이거나 신축성 보조 부재(20)가 채워진, 전 방향 신축성을 갖는 섬유 강화 복합체 필름.
- 제1항에 있어서,상기 섬유(12)의 조성물은 유리, 실리카(silica), 석영(quartz), 탄소 및 아라미드(aramid)로 이루어진 군에서 선택되는 어느 하나 이상인, 전 방향 신축성을 갖는 섬유 강화 복합체 필름.
- 제1항에 있어서,상기 플라스틱은 열 경화성(Thermoset), 열 가소성(Thermoplastic), 광 경화성(Photo Polymerization), 상온 경화성(Room Temperature Vulcanization) 중 어느 하나인 합성수지, 합성 고무, 천연수지 및 천연고무로 이루어진 군에서 선택되는 어느 하나 이상인, 전 방향 신축성을 갖는 섬유 강화 복합체 필름.
- 제1항에 있어서,상기 섬유로 강화된 플라스틱 소재의 탄성계수는 상기 신축성 보조 부재(20)의 탄성계수의 500배 이상인, 전 방향 신축성을 갖는 섬유 강화 복합체 필름.
- 제1항에 있어서,상기 신축성 보조 부재(20)는 열 경화성(Thermoset), 열 가소성(Thermoplastic), 광 경화성(Photo Polymerization), 상온 경화성(Room Temperature Vulcanization) 중 어느 하나인 합성수지, 합성 고무, 천연수지 및 천연고무로 이루어진 군에서 선택되는 어느 하나 이상인, 전 방향 신축성을 갖는 섬유 강화 복합체 필름.
- 제1항에 있어서,음값의 푸아송 비를 가지는, 전 방향 신축성을 갖는 섬유 강화 복합체 필름.
- 섬유로 강화된 플라스틱 필름을 제조하는 단계; 및상기 필름 상에 공간 구역(130)을 형성함으로써 옥세틱 구조(100)를 형성하는 단계;를 포함하는, 전 방향 신축성을 갖는 섬유 강화 복합체 필름의 제조 방법.
- 제7항에 있어서,상기 공간 구역(130)에 신축성 보조 부재(20)를 채우는 단계;를 더 포함하는, 전 방향 신축성을 갖는 섬유 강화 복합체 필름의 제조 방법.
- 제7항에 있어서,상기 섬유(12)의 조성물은 유리, 실리카(silica), 석영(quartz), 탄소 및 아라미드(aramid)로 이루어진 군에서 선택되는 어느 하나 이상인, 전 방향 신축성을 갖는 섬유 강화 복합체 필름.
- 제7항에 있어서,상기 섬유로 강화된 플라스틱 필름을 제조하는 단계;는,섬유(12) 및 플라스틱 모재(13)를 복합화하여 섬유-플라스틱 모재 혼합물(14)을 제조하는 단계;상기 섬유-플라스틱 모재 혼합물(14)을 필름 형태로 성형하는 단계; 및상기 필름 형태로 성형된 혼합물을 경화하여 섬유 강화 복합체 필름(15)을 제조하는 단계;를 포함하는, 전 방향 신축성을 갖는 섬유 강화 복합체 필름의 제조 방법.
- 제10항에 있어서,상기 섬유(12)는 입자, 원사, 단사 및 직물로 이루어진 군에서 선택되는 하나 이상의 형태인, 전 방향 신축성을 갖는 섬유 강화 복합체 필름의 제조 방법.
- 제10항에 있어서,필름 형태로 성형된 혼합물을 경화하여 섬유 강화 복합체 필름(15)을 제조하는 단계;는,열 경화(thermal curing), 광 경화(photo-curing) 및 상온 경화(room temperature vulcanization)로 이루어지는 군에서 선택되는 한 가지 이상의 방법으로 수행되는, 전 방향 신축성을 갖는 섬유 강화 복합체 필름의 제조 방법.
- 제7항에 있어서,상기 필름 상에 공간 구역(130)을 형성함으로써 옥세틱 구조(100)를 형성하는 단계;는,레이저 커팅(laser cutting), 타발 천공(press punch), CNC(computer numerical control) 가공, 몰딩 (moulding), 프린팅(printing) 및 광식각 (photolithography)으로 이루어지는 군에서 선택되는 한 가지 이상의 방법으로 수행되는, 전 방향 신축성을 갖는 섬유 강화 복합체 필름의 제조 방법.
- 제7항에 있어서,상기 공간 구역(130)에 신축성 보조 부재(20)를 채우는 단계;는,스크린 프린팅(screen printing), 잉크젯 프린팅(ink-jet printing), 바 코팅(bar coating), 스핀 코팅(spin coating), 함침(impregnation), 핸드 레이업(hand layup), 오토클레이브(autoclave) 및 레진 인퓨전(resin infusion)으로 이루어지는 군에서 선택되는 한 가지 이상의 방법으로 수행되는, 전 방향 신축성을 갖는 섬유 강화 복합체 필름의 제조 방법.
- 제1항 내지 제6항 중 어느 한 항의 섬유 강화 복합체 필름 또는 제7항 내지 제14항 중 어느 한 항의 제조방법으로 제조된 섬유 강화 복합체 필름을 포함하는, 스트레처블 기기.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/568,984 US20240270914A1 (en) | 2022-01-11 | 2022-10-12 | Omnidirectionally stretchable fiber-reinforced composite film and manufacturing method thereof |
CN202280006033.XA CN116745345A (zh) | 2022-01-11 | 2022-10-12 | 具有全方位伸缩性的纤维增强复合体薄膜及其制备方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2022-0003941 | 2022-01-11 | ||
KR1020220003941A KR102748090B1 (ko) | 2022-01-11 | 2022-01-11 | 전 방향 신축성을 갖는 섬유 강화 복합체 필름 및 그 제조방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023136429A1 true WO2023136429A1 (ko) | 2023-07-20 |
Family
ID=87279270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/015399 WO2023136429A1 (ko) | 2022-01-11 | 2022-10-12 | 전 방향 신축성을 갖는 섬유 강화 복합체 필름 및 그 제조방법 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240270914A1 (ko) |
KR (1) | KR102748090B1 (ko) |
CN (1) | CN116745345A (ko) |
WO (1) | WO2023136429A1 (ko) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070104415A (ko) * | 2005-02-16 | 2007-10-25 | 다우 코닝 코포레이션 | 강화 실리콘 수지 필름 및 이의 제조방법 |
KR20160042288A (ko) * | 2014-10-08 | 2016-04-19 | 삼성디스플레이 주식회사 | 신장 가능 필름, 이의 제조방법 및 이를 포함하는 표시 장치 |
KR20180061003A (ko) * | 2016-11-29 | 2018-06-07 | 서울대학교산학협력단 | 전도성 유연 소자 |
US20190217573A1 (en) * | 2018-01-18 | 2019-07-18 | Postech Academy-Industry Foundation | Flexible substrate, manufacturing method thereof, and flexible electronic device including the same |
KR20200082370A (ko) * | 2018-12-28 | 2020-07-08 | 서울대학교산학협력단 | 신축성을 가지는 배선용 기판 장치 및 이의 제조 방법과, 상기 배선용 기판 장치를 포함하는 전자 기기 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102173494B1 (ko) * | 2018-01-24 | 2020-11-03 | 서울대학교산학협력단 | 캐패시터형 스트레인 센서 및 그 제조방법 |
KR102304949B1 (ko) * | 2019-11-26 | 2021-09-27 | 한국과학기술원 | 신축성 투명도 조절 필름, 투명도 조절 필름의 제조 방법 및 이를 이용한 스마트 윈도우 |
-
2022
- 2022-01-11 KR KR1020220003941A patent/KR102748090B1/ko active IP Right Grant
- 2022-10-12 WO PCT/KR2022/015399 patent/WO2023136429A1/ko active Application Filing
- 2022-10-12 US US18/568,984 patent/US20240270914A1/en active Pending
- 2022-10-12 CN CN202280006033.XA patent/CN116745345A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070104415A (ko) * | 2005-02-16 | 2007-10-25 | 다우 코닝 코포레이션 | 강화 실리콘 수지 필름 및 이의 제조방법 |
KR20160042288A (ko) * | 2014-10-08 | 2016-04-19 | 삼성디스플레이 주식회사 | 신장 가능 필름, 이의 제조방법 및 이를 포함하는 표시 장치 |
KR20180061003A (ko) * | 2016-11-29 | 2018-06-07 | 서울대학교산학협력단 | 전도성 유연 소자 |
US20190217573A1 (en) * | 2018-01-18 | 2019-07-18 | Postech Academy-Industry Foundation | Flexible substrate, manufacturing method thereof, and flexible electronic device including the same |
KR20200082370A (ko) * | 2018-12-28 | 2020-07-08 | 서울대학교산학협력단 | 신축성을 가지는 배선용 기판 장치 및 이의 제조 방법과, 상기 배선용 기판 장치를 포함하는 전자 기기 |
Also Published As
Publication number | Publication date |
---|---|
KR102748090B1 (ko) | 2024-12-31 |
CN116745345A (zh) | 2023-09-12 |
KR20230108491A (ko) | 2023-07-18 |
US20240270914A1 (en) | 2024-08-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2017082654A1 (ko) | 광학적층체 및 이를 포함하는 화상표시장치 | |
WO2014027761A1 (ko) | 표시소자용 플렉서블 기판, 그 제조방법 및 이를 이용한 디스플레이 장치 | |
WO2009088240A2 (ko) | 광학 필름 및 이를 포함하는 정보전자 장치 | |
WO2014204165A9 (ko) | 편광판 및 이를 포함하는 디스플레이 장치 | |
JP7115700B2 (ja) | フォルダブルバックプレートフィルムおよびフォルダブルバックプレートフィルムの製造方法 | |
WO2018174415A1 (en) | Protective film for electronic device and window assembly using the same | |
WO2018143594A1 (ko) | 투명 적층체 | |
WO2013166736A1 (zh) | 液晶显示面板和液晶显示器 | |
CN104903095A (zh) | 玻璃层叠体及其制造方法、以及带有机硅树脂层的支撑基材 | |
WO2023136429A1 (ko) | 전 방향 신축성을 갖는 섬유 강화 복합체 필름 및 그 제조방법 | |
WO2019013604A1 (ko) | 액정 패널 및 이의 제조방법 | |
WO2005116734A1 (en) | Flexible flat panel displays | |
US7858003B2 (en) | Soft mold having back-plane attached thereto and method for fabricating the soft mold | |
KR20190041255A (ko) | 필름 부착장치 및 이를 이용한 필름 부착방법 | |
WO2012134032A1 (ko) | 복합시트 및 이를 이용한 표시소자용 기판 | |
US12005612B2 (en) | Transparent stretchable substrate and manufacturing method thereof | |
WO2013094932A1 (ko) | 글라스 클로스 및 이를 포함하는 복합 시트 | |
WO2010062133A2 (ko) | 위상차 필름 및 이를 포함하는 액정 표시 장치 | |
KR20140028391A (ko) | 폴더블 기판용 조성물 및 그 제조방법, 이를 포함하는 표시장치 | |
WO2022102872A1 (ko) | 표시장치 | |
KR20200059963A (ko) | 폴더블 백플레이트, 폴더블 백플레이트의 제조방법 및 이를 포함하는 폴더블 디스플레이 장치 | |
KR20150006122A (ko) | 플렉시블 렌티큘러시트 제조방법, 그 시트 및 이를 이용한 라벨 | |
JPH01200328A (ja) | 液晶表示装置の製造方法 | |
WO2015152524A1 (ko) | 박막 터치 스크린 패널의 제조 방법 | |
JPH10319843A (ja) | 表示ラベル及び表示ラベルの取付方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 202280006033.X Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22920759 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18568984 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22920759 Country of ref document: EP Kind code of ref document: A1 |