WO2017057424A1 - 線条樹脂成形体 - Google Patents
線条樹脂成形体 Download PDFInfo
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- WO2017057424A1 WO2017057424A1 PCT/JP2016/078560 JP2016078560W WO2017057424A1 WO 2017057424 A1 WO2017057424 A1 WO 2017057424A1 JP 2016078560 W JP2016078560 W JP 2016078560W WO 2017057424 A1 WO2017057424 A1 WO 2017057424A1
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- resin molded
- molded body
- linear resin
- inorganic filler
- linear
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/10—Extrusion moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/14—Making preforms characterised by structure or composition
- B29B11/16—Making preforms characterised by structure or composition comprising fillers or reinforcement
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92114—Dimensions
- B29C2948/92123—Diameter or circumference
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92428—Calibration, after-treatment, or cooling zone
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92438—Conveying, transporting or storage of articles
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/28—Storing of extruded material, e.g. by winding up or stacking
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
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- 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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
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- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
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- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/16—EPM, i.e. ethylene-propylene copolymers; EPDM, i.e. ethylene-propylene-diene copolymers; EPT, i.e. ethylene-propylene terpolymers
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- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/18—Polymers of hydrocarbons having four or more carbon atoms, e.g. polymers of butylene, e.g. PB, i.e. polybutylene
- B29K2023/22—Copolymers of isobutene, e.g. butyl rubber
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- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
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- 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
- B29K2307/00—Use of elements other than metals as reinforcement
- B29K2307/04—Carbon
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- 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
- B29K2507/00—Use of elements other than metals as filler
- B29K2507/04—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
Definitions
- the present invention relates to a linear resin molded body, and more particularly to a linear resin molded body used as a raw material in a modeling apparatus or the like for constructing a three-dimensional object (object) such as a so-called 3D printer. .
- a so-called 3D printer has attracted attention as a method for forming a three-dimensional object, and it has become possible to easily produce a three-dimensional object having a complicated shape that has been difficult to realize so far. If a 3D printer is used, it is possible to process even a shape that cannot be realized by a normal method by stacking arbitrary materials such as resin and metal.
- a filament that is a modeling material is supplied to an extrusion head, the filament is melted by a liquefier mounted on the extrusion head, and the melted filament is extruded onto a base through a nozzle.
- the extrusion head and base move relatively to form a 3D model, and a large number of linear and layered materials are stacked to produce a 3D model.
- the modified ABS material is delivered to the extrusion head of the laminated deposition system by extrusion, and the delivered modified ABS material is melted in the extrusion head under conditions that improve the response time of the extrusion head.
- a method of constructing a 3D object includes depositing molten thermoplastic material layer by layer to form a 3D object.
- Patent Document 3 and Patent Document 4 disclose a resin strand used as a raw material, a supply method thereof, and the like.
- Patent Document 3 discloses a composition for producing a three-dimensional object, but in an extruder for producing a shaped article, it is supplied as a flexible filament to an extrusion head.
- the filament is melted in a liquefier carried by the extrusion head.
- the liquefier heats the filament to a temperature slightly above the freezing point to bring it into a molten state.
- the molten material is extruded onto the pedestal through the orifice of the liquefier.
- Patent Document 4 discloses a filament cassette and a filament cassette receiver for supplying filaments in a three-dimensional deposition modeling machine.
- Patent Document 4 provides a method of engaging and separating a filament from a modeling machine in a simple manner so that the filament can be realized in a manner that protects the filament from moisture in the environment.
- the present invention has been proposed in view of such a conventional situation, and even when an inorganic filler such as carbon fiber is blended, it is possible to improve the fusion between layers of a modeled object, and a 3D printer.
- An object of the present invention is to provide a linear resin molded body capable of further improving the mechanical suitability (particularly rigidity).
- the filamentous resin molded product of the present invention is characterized by containing a thermoplastic resin, containing an inorganic filler, and containing an ⁇ -olefin elastomer.
- a high rigidity can be imparted to a shaped article such as a 3D printer by blending an inorganic filler such as carbon fiber.
- blending of inorganic fillers such as carbon fiber leads to inhibition of fusion between layers of the shaped object, and when the blending amount of the inorganic filler increases, the peel strength between the layers decreases, and the rigidity as the shaped object is descend.
- an ⁇ -olefin elastomer by further blending an ⁇ -olefin elastomer, a decrease in peel strength due to blending of the inorganic filler is suppressed, and the rigidity of the molded article is secured.
- the fusing property is improved, and the 3D model forming property (peeling strength between layers) is greatly improved.
- the strength of the shaped article is maintained by greatly improving the peel strength between the layers.
- linear resin molded body of the present invention even when an inorganic filler such as carbon fiber is blended, it is possible to improve the fusion between layers of a modeled object, and to improve the mechanical suitability (particularly rigidity) in a 3D printer. It is possible to improve further. It is possible to provide a linear resin molded product with various functionalities, thereby enabling modeling with more functionalities.
- FIG. 1 It is a schematic perspective view which shows an example of a filament resin molding. It is sectional drawing of the linear resin molded object shown by FIG. It is a figure which shows an example of the manufacturing line of a filament resin molding.
- the basic mechanism of a 3D printer is to create a three-dimensional object, that is, a 3D (three-dimensional) object, by stacking cross-sectional shapes using computer generated 3D data as a design drawing.
- the methods include, for example, an ink jet method in which a liquid resin is irradiated with ultraviolet rays or the like to be cured little by little, a powder fixing method in which an adhesive is sprayed onto a powder resin, and a resin melted by heat being stacked little by little.
- hot melt lamination There are methods such as hot melt lamination.
- the linear resin molded body according to the present embodiment is used in a hot melt lamination method, and is supplied to a 3D printer in a state of being wound around a reel, for example.
- FIG. 1 and FIG. 2 show a so-called single-layer linear resin molded body 10.
- the single-layer linear resin molded body 10 is obtained by processing a raw material resin into a linear stripe, and has a very simple configuration.
- the form of the linear resin molded body is not limited to the single layer, and a multilayer structure of two or more layers is also possible.
- the linear resin molded body of the present embodiment is mainly composed of a thermoplastic resin, but any thermoplastic resin can be used as the thermoplastic resin.
- thermoplastic resin such as polypropylene resin, polyester resin such as acrylonitrile-butadiene-styrene copolymer resin (ABS resin), polycarbonate resin, polyethylene terephthalate (PET), etc.
- ABS resin acrylonitrile-butadiene-styrene copolymer resin
- PET polyethylene terephthalate
- a polypropylene resin is preferable because it is lightweight.
- the blending amount of the thermoplastic resin in the linear resin molding pair is preferably 40% by mass to 89% by mass, and more preferably 60% by mass to 79% by mass in consideration of moldability and the like.
- thermoplastic resin When the thermoplastic resin is used alone in the linear resin molded body, mechanical strength (rigidity) may be insufficient. Therefore, in the linear resin molded body of the present embodiment, an inorganic filler is blended for the purpose of supplementing strength.
- a fibrous or powdery material can be used, and the material thereof is also arbitrary.
- examples include carbon fiber (carbon fiber), glass fiber (glass fiber), talc, nanoclay, calcium carbonate, magnesium carbonate, and the like. Is preferred.
- the amount of the inorganic filler added may be set according to the required mechanical properties, but is preferably 10% by mass to 40% by mass, and more preferably 20% by mass to 30% by mass. If the blending amount of the inorganic filler is less than 10% by mass, effects (such as improvement in rigidity) by blending the inorganic filler may be insufficient. On the other hand, if the blending amount of the inorganic filler exceeds 40% by mass, the proportion of the thermoplastic resin is relatively decreased, and it may be difficult to form.
- an inorganic filler When an inorganic filler is blended with a thermoplastic resin, when a linear resin molded product is formed into a modeled article, interlaminar fusion tends to be insufficient, and mechanical suitability (rigidity) as a modeled article decreases. . Therefore, in the linear resin molded body of the present embodiment, in addition to the thermoplastic resin and the inorganic filler, an ⁇ -olefin elastomer is blended to improve the peel strength between layers, and to impart mechanical suitability to the molded article. I will do it.
- the ⁇ -olefin elastomer is, for example, a copolymer of ethylene and ⁇ -olefin, and examples of the ⁇ -olefin include propylene and butylene.
- the ethylene content is preferably 50 mol% or more.
- Typical examples of ⁇ -olefin elastomers include ethylene-butene copolymers and ethylene-propylene copolymers.
- the physical properties of representative examples of ⁇ -olefin elastomers are as follows.
- Ethylene-butene copolymer manufactured by Mitsui Chemicals, Inc., trade name TAFMER DF605 -Ratio of structural units derived from ethylene: 50 mol% or more-Density: 861 kg / cm 3 ⁇ MFR (230 ° C.): 0.9 g / 10 min
- the blending amount of the ⁇ -olefin elastomer is preferably 1% by mass to 20% by mass, and more preferably 1% by mass to 10% by mass.
- the peel strength between the layers cannot be sufficiently improved.
- the blending amount of the ⁇ -olefin elastomer exceeds 20% by mass, the physical properties of the linear resin molded product may be lowered, and it may be difficult to maintain the mechanical strength (rigidity) of the molded product.
- ⁇ -olefin elastomer is extremely effective particularly when polypropylene is used as the thermoplastic resin and carbon fiber is used as the inorganic filler. This is because polypropylene is lightweight, but the delamination strength between layers when the carbon fiber which is an inorganic filler is added is remarkably reduced.
- the linear resin molded body contains an ⁇ -olefin elastomer. It is presumed that the melting point is lowered or the resin is softened. When the melting point of the linear resin molded body is lowered, an improvement in peel strength between layers of the shaped article can be expected due to the fact that the resin on the side to be laminated is not completely solidified when the resin is laminated.
- various additives can be added to the linear resin molded body according to specifications, such as colorants.
- the outer diameter dimension of the linear resin molded body can also be set as appropriate according to the required specifications, for example, a filament having a diameter of about 1.75 mm.
- the production line 30 of the linear resin molded body 10 includes an extruder 31, a mold 32, a sizing device 33, a water tank 37, a fixed roller 41, an outer diameter measuring device 42, and a winding device 43. Including.
- the extruder 31 melts and kneads the raw resin composition and continuously supplies it to the mold 32.
- the extruder 31 includes a cylinder in which a screw is built, a raw material charging hopper, an injection nozzle, and the like. Has been.
- the raw material resin composition charged from the raw material charging hopper is melt-kneaded by a screw in the cylinder and injected from the injection nozzle to the mold 32.
- the metal mold 32 extrudes the molten resin from the extruder 31 in the horizontal direction, and the molten resin extruded from the mold 32 is cooled to become the filament resin molded body 10.
- the raw material resin composition is a mixture of the above-described thermoplastic resin, inorganic filler, and ⁇ -olefin elastomer.
- the water tank 37 is formed in a long box shape along the conveying direction of the linear resin molded body 10 extruded from the extruder 31.
- the linear resin molded body 10 is introduced into the water tank 37 from the wall at one end of the water tank 37 and led out from the wall at the other end of the water tank 37.
- water 37a for immersing the linear resin molded body 10 and cooling the linear resin molded body 10 is stored.
- the sizing device 33 is disposed inside the wall at one end of the water tank 37, makes the cross section of the linear resin molded body 10 sent from the extruder 31 into the water tank 37 into a perfect circle, and the linear resin molded body. 10 has a function of making the outer diameter dimension uniform to a predetermined dimension.
- the fixed roller 41 stabilizes the posture of the linear resin molded body 10 in the water tank 37 through the sizing device 33 and conveys the linear resin molded body 10 toward the winding device 43 side.
- the outer diameter measuring device 42 measures the outer diameter of the linear resin molded body 10 cooled in the water tank 37.
- the winding device 43 is disposed on the downstream side of the pair of upper and lower winding rollers 43a that conveys the linear resin molded body 10 that has passed through the outer diameter measuring device 42 to the downstream side, and the winding roller 43a.
- a bobbin winder 43b having a winding shaft 43c for winding the resin molded body 10.
- the manufacturing method of the linear resin molded body 10 includes an extrusion process, a sizing process, a cooling process, a dimension measuring process, and a winding process.
- the resin pellets fed from the hopper 31 a are melted in the extruder 31, and the melted resin is extruded from the mold 32.
- the outer diameter of the extruded linear resin molded body 10 is D1.
- the linear resin molded body 10 travels along the conveyance path, and thus has a uniform outer diameter D2 that matches the inner diameter of the conveyance path.
- the filament resin molded body 10 is cooled by passing through the water tank 37, and the outer diameter of the filament resin molded body 10 is reduced.
- the outer diameter of the linear resin molded body 10 is measured to determine whether or not the measured value is an appropriate size.
- each manufacturing condition is reviewed so that the outer diameter is within the standard.
- the linear resin molded body 10 is fed to the bobbin winder 43b by the winding roller 43a of the winding device 43 and is fed to the winding shaft 43c. Wind up the continuum.
- the linear resin molded body 10 having a predetermined length is wound around the winding shaft 43c, the linear resin molded body 10 is wound around the new winding shaft 43c.
- the produced linear resin molded body 10 mainly comprises a thermoplastic resin and contains an inorganic filler and an ⁇ -olefin elastomer. Therefore, the mechanical strength (rigidity) is improved by blending the inorganic filler, and ⁇ - It is possible to simultaneously improve the peel strength between the layers by blending the olefin elastomer, and it is possible to further improve the mechanical suitability (particularly rigidity) in the 3D printer.
- Example 1 Polypropylene (PP) is blended with 27% by mass of carbon fiber (CF) and 10% by mass of ⁇ -olefin elastomer A (trade name Toughmer DF605, manufactured by Mitsui Chemicals) to obtain a raw material composition which is melted in an extruder. After kneading, it was supplied to the die core and pulled out from a die provided on the die core.
- PP Polypropylene
- CF carbon fiber
- ⁇ -olefin elastomer A trade name Toughmer DF605, manufactured by Mitsui Chemicals
- sizing is provided at the inlet of the water tank to be cooled and solidified, and the final cross-sectional shape of the linear resin molded body at this sizing portion (Wire diameter and linearity) were arranged.
- the shape in the sizing part it was cooled and solidified in a water tank and wound up by a winder. Furthermore, the linear resin molded body sent out from the winder was wound up on a bobbin.
- Example 2 Extruded resin in the same manner as in Example 1 except that 21% by mass of carbon fiber and 10% by mass of ⁇ -olefin elastomer A (trade name Toughmer DF605, manufactured by Mitsui Chemicals, Inc.) were blended into polypropylene. The body was made.
- ⁇ -olefin elastomer A trade name Toughmer DF605, manufactured by Mitsui Chemicals, Inc.
- Example 3 Except for blending 21% by mass of carbon fiber with 1% by mass of carbon fiber and 21% by mass of ⁇ -olefin elastomer A (trade name: Toughmer DF605, manufactured by Mitsui Chemicals), a linear resin molding was performed in the same manner as in Example 1. The body was made.
- ⁇ -olefin elastomer A trade name: Toughmer DF605, manufactured by Mitsui Chemicals
- Example 4 Except for blending 21% by mass of carbon fiber and 10% by mass of ⁇ -olefin elastomer B (trade name TAFMER DF810, manufactured by Mitsui Chemicals, Inc.) into polypropylene as a raw material composition, linear resin molding was carried out in the same manner as in Example 1. The body was made.
- ⁇ -olefin elastomer B trade name TAFMER DF810, manufactured by Mitsui Chemicals, Inc.
- Example 5 Extruded resin in the same manner as in Example 1 except that 21% by mass of carbon fiber and 10% by mass of ⁇ -olefin elastomer C (trade name Toughmer DF640, manufactured by Mitsui Chemicals, Inc.) were blended into polypropylene as a raw material composition. The body was made.
- ⁇ -olefin elastomer C trade name Toughmer DF640, manufactured by Mitsui Chemicals, Inc.
- Example 6 Extruded resin in the same manner as in Example 1 except that 21% by mass of glass fiber and 10% by mass of ⁇ -olefin elastomer A (trade name: Toughmer DF605) are blended into polypropylene to form a raw material composition. The body was made.
- Comparative Example 1 A linear resin molded body was produced in the same manner as in Example 1 except that only 30% by mass of carbon fiber was mixed with polypropylene to obtain a raw material composition.
- Comparative Example 2 A linear resin molded body was prepared in the same manner as in Example 1 except that only 21% by mass of carbon fiber was mixed with polypropylene to obtain a raw material composition.
- Comparative Example 3 A linear resin molded body was produced in the same manner as in Example 1 except that only 21% by mass of glass fiber was mixed with polypropylene to obtain a raw material composition.
- a 3D printer (Bonsai Lab Co., Ltd., trade name BS-01) was used to produce a shaped article having a length of 50 mm, a width of 20 mm, and a thickness of 4 mm.
- the model was modeled at a temperature of 230 ° C.
- the rigidity of the obtained modeling thing was evaluated in the bending test.
- a universal testing machine (manufactured by Shimadzu Corporation, trade name AGS-10kNJ) was used for the bending test, and the bending test was performed by three-point bending.
- a modeled object having a length of 50 mm, a width of 20 mm, and a thickness of 0.6 mm was prepared, and the peel strength between layers of the modeled object was measured.
- the peel strength is fixed by holding one end with a vise and the other end with a push-pull gauge (product name: DS2-500N) and then pulling it horizontally from the test piece. The strength was measured.
- Table 1 shows the physical property values of ⁇ -olefin elastomers A to C used in each example.
- Example 6 using glass fiber, the flexural modulus and the maximum bending stress are slightly lower than those in Examples and Comparative Examples using carbon fiber, but the comparison without adding ⁇ -olefin elastomer is performed. Compared with Example 3, it can be seen that these values are improved. Further, the molded product peel strength is the most excellent value.
- the linear resin molded body used in the hot melt lamination type 3D printer is blended with polypropylene, which is a thermoplastic resin, and carbon fiber, which is an inorganic filler, and further with ⁇ -olefin elastomer.
- polypropylene which is a thermoplastic resin
- carbon fiber which is an inorganic filler
- ⁇ -olefin elastomer By having the configuration provided, it is possible to produce a molded article having high rigidity and excellent fusion between layers in the 3D model.
- Modeling with high functionality is possible.
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Abstract
Description
(1)エチレン-ブテン共重合体
・三井化学社製、商品名タフマー DF605
・エチレンに由来する構成単位の比率:50モル%以上
・密度:861kg/cm3
・MFR(230℃):0.9g/10min
(2)エチレン-プロピレン共重合体
・住友化学社製、商品名エスプレン SPO V0141
・エチレン/プロピレン=67/27(重量比)
・密度:860kg/cm3
・MFR(190℃、2.16kg荷重):0.7g/10min
実施例1
ポリプロピレン(PP)にカーボンファイバ(CF)を27質量%、α-オレフィンエラストマA(三井化学社製、商品名タフマー DF605)を10質量%配合して原料組成物とし、これを押出機にて溶融混練した後、ダイコアへ供給し、ダイコアに設けられた口金から引出した。この口金である程度線径や線形を整えて線条樹脂成形体に賦形したのち、冷却固化する水槽の入口部にサイジングを設けて、このサイジング部において線条樹脂成形体の最終的な断面形状(線径および線形)を整えた。サイジング部において形状を賦形した後、水槽にて冷却固化して、巻取機にて巻取りを行なった。さらに、巻取機から送り出された線条樹脂成形体はボビンに巻き取った。
ポリプロピレンにカーボンファイバを21質量%、α-オレフィンエラストマA(三井化学社製、商品名タフマー DF605)を10質量%配合して原料組成物とした他は、実施例1と同様に線条樹脂成形体を作製した。
ポリプロピレンにカーボンファイバを21質量%、α-オレフィンエラストマA(三井化学社製、商品名タフマー DF605)を1質量%配合して原料組成物とした他は、実施例1と同様に線条樹脂成形体を作製した。
ポリプロピレンにカーボンファイバを21質量%、α-オレフィンエラストマB(三井化学社製、商品名タフマー DF810)を10質量%配合して原料組成物とした他は、実施例1と同様に線条樹脂成形体を作製した。
ポリプロピレンにカーボンファイバを21質量%、α-オレフィンエラストマC(三井化学社製、商品名タフマー DF640)を10質量%配合して原料組成物とした他は、実施例1と同様に線条樹脂成形体を作製した。
ポリプロピレンにガラスファイバを21質量%、α-オレフィンエラストマA(三井化学社製、商品名タフマー DF605)を10質量%配合して原料組成物とした他は、実施例1と同様に線条樹脂成形体を作製した。
ポリプロピレンにカーボンファイバのみを30質量%配合して原料組成物とした他は、実施例1と同様に線条樹脂成形体を作製した。
ポリプロピレンにカーボンファイバのみを21質量%配合して原料組成物とした他は、実施例1と同様に線条樹脂成形体を作製した。
ポリプロピレンにガラスファイバのみを21質量%配合して原料組成物とした他は、実施例1と同様に線条樹脂成形体を作製した。
作製した線条樹脂成形体を用い、3Dプリンタ(ボンサイラボ社製、商品名BS-01)にて長さ50mm×幅20mm×厚さ4mmの造形物を作製した。造形物を造形する際の条件として、温度230℃で造形した。そして、得られた造形物の剛性を曲げ試験にて評価した。曲げ試験には万能試験機(島津製作所製、商品名AGS-10kNJ)を使用し、3点曲げにて実施した。また、長さ50mm×幅20mm×厚さ0.6mmの造形物を作製し、造形物の層間の剥離強度を測定した。剥離強度は、一端を万力で挟んで固定し、他端をプッシュプルゲージ(イマダ社製、商品名DS2-500N)にて挟んで固定した後、試験片と水平方向に引っ張り、層間が剥離した際の強度を測定した。結果を表1に示す。表2は、各実施例で用いたα-オレフィンエラストマA~Cの物性値である。
Claims (5)
- 熱可塑性樹脂を含み、無機充填材を含有するとともに、α-オレフィンエラストマを含有することを特徴とする線条樹脂成形体。
- 前記熱可塑性樹脂がポリプロピレンであることを特徴とする請求項1記載の線条樹脂成形体。
- 前記無機充填材がカーボンファイバであることを特徴とする請求項1または2記載の線条樹脂成形体。
- 前記α-オレフィンエラストマがエチレン-α-オレフィン共重合体であることを特徴とする請求項1から3のいずれか1項記載の線条樹脂成形体。
- 熱溶融積層方式の3Dプリンタに用いられる線条樹脂成形体であることを特徴とする請求項1から4のいずれか1項記載の線条樹脂成形体。
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