WO2017047693A1 - モデル材用樹脂組成物、光造形用インクセット、および、光造形品の製造方法 - Google Patents
モデル材用樹脂組成物、光造形用インクセット、および、光造形品の製造方法 Download PDFInfo
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- WO2017047693A1 WO2017047693A1 PCT/JP2016/077256 JP2016077256W WO2017047693A1 WO 2017047693 A1 WO2017047693 A1 WO 2017047693A1 JP 2016077256 W JP2016077256 W JP 2016077256W WO 2017047693 A1 WO2017047693 A1 WO 2017047693A1
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- UBPGILLNMDGSDS-UHFFFAOYSA-N diethylene glycol diacetate Chemical compound CC(=O)OCCOCCOC(C)=O UBPGILLNMDGSDS-UHFFFAOYSA-N 0.000 description 1
- 229940019778 diethylene glycol diethyl ether Drugs 0.000 description 1
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 description 1
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 1
- UYAAVKFHBMJOJZ-UHFFFAOYSA-N diimidazo[1,3-b:1',3'-e]pyrazine-5,10-dione Chemical compound O=C1C2=CN=CN2C(=O)C2=CN=CN12 UYAAVKFHBMJOJZ-UHFFFAOYSA-N 0.000 description 1
- VAPILSUCBNPFBS-UHFFFAOYSA-L disodium 2-oxido-5-[[4-[(4-sulfophenyl)diazenyl]phenyl]diazenyl]benzoate Chemical compound [Na+].[Na+].Oc1ccc(cc1C([O-])=O)N=Nc1ccc(cc1)N=Nc1ccc(cc1)S([O-])(=O)=O VAPILSUCBNPFBS-UHFFFAOYSA-L 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- TUEYHEWXYWCDHA-UHFFFAOYSA-N ethyl 5-methylthiadiazole-4-carboxylate Chemical compound CCOC(=O)C=1N=NSC=1C TUEYHEWXYWCDHA-UHFFFAOYSA-N 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000002563 ionic surfactant Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- PXZQEOJJUGGUIB-UHFFFAOYSA-N isoindolin-1-one Chemical compound C1=CC=C2C(=O)NCC2=C1 PXZQEOJJUGGUIB-UHFFFAOYSA-N 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- YDKNBNOOCSNPNS-UHFFFAOYSA-N methyl 1,3-benzoxazole-2-carboxylate Chemical compound C1=CC=C2OC(C(=O)OC)=NC2=C1 YDKNBNOOCSNPNS-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methyl-cyclopentane Natural products CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- OTLDLKLSNZMTTA-UHFFFAOYSA-N octahydro-1h-4,7-methanoindene-1,5-diyldimethanol Chemical compound C1C2C3C(CO)CCC3C1C(CO)C2 OTLDLKLSNZMTTA-UHFFFAOYSA-N 0.000 description 1
- 229940105570 ornex Drugs 0.000 description 1
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229940116423 propylene glycol diacetate Drugs 0.000 description 1
- 229940079877 pyrogallol Drugs 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 230000036556 skin irritation Effects 0.000 description 1
- 231100000475 skin irritation Toxicity 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical class C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/322—Pigment inks
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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Definitions
- the present invention relates to a resin composition for model material, an optical modeling ink set including the resin composition for model material, and a method for manufacturing an optical modeling product using the optical modeling ink set.
- a modeling method using a photocurable resin composition that is cured by irradiating ultraviolet rays or the like is widely known as a method for creating a three-dimensional modeled object.
- a cured layer having a predetermined shape is formed by irradiating the photocurable resin composition with ultraviolet rays or the like to cure.
- a new cured layer is formed by supplying and curing a photocurable resin composition on the cured layer.
- a three-dimensional model is produced by repeating the above steps.
- the model material and the support material are formed in combination (Japanese Patent Laid-Open No. 2004-255839). No., JP 2010-155889 A, and JP 2012-111226 A).
- the support material is created by irradiating the photocurable resin composition with ultraviolet rays or the like and curing the same as the model material. After the model material is prepared, the support material can be removed by physically peeling the support material or dissolving the support material in an organic solvent or water.
- the hardened layer is formed by, for example, the following method.
- a resin composition for a model material and a layer made of a resin composition for a support material are adjacent to each other by discharging the resin composition for a model material and the resin composition for a support material from an inkjet head.
- a layer is formed.
- a roller is used and the excess resin composition for model materials and the resin composition for support materials are removed.
- these resin compositions are cured by irradiating light using a light source. Thereby, the hardened layer which consists of a model material and a support material is formed.
- the optical modeling product obtained by using the conventional resin composition for a model material and the resin composition for a support material has a problem that the dimensional accuracy is lowered.
- the present invention has been made in view of the current situation, and a resin composition for a model material that can obtain an optical modeling product with good dimensional accuracy, an optical modeling ink set including the resin composition for a model material, And it aims at providing the manufacturing method of the optical modeling goods using this ink set for optical modeling.
- the present inventors have earnestly studied the cause of the reduction in dimensional accuracy of stereolithography products. As a result, the present inventors, in an optically shaped article with reduced dimensional accuracy, at the interface between the layer composed of the resin composition for model material and the layer composed of the resin composition for support material, and the resin composition for model material and The knowledge that bleeding (bleeding) occurs at the interface by moving one of the resin compositions for the support material to the other side was obtained. That is, the present inventors have one of the causes that the bleeding generated at the interface between the layer made of the resin composition for model material and the layer made of the resin composition for support material is reduced in the dimensional accuracy of the optically shaped product. I got the knowledge.
- the present invention has been made based on the above findings, and the gist thereof is as follows.
- a resin composition for a model material used for modeling a model material by an inkjet optical modeling method wherein (A) an ethylenically unsaturated monomer as a photocuring component and (B) photopolymerization An initiator, (C) a surface conditioner, a surface tension Mt of 26.0 to 33.0 mN / m, and a surface tension Mst represented by the following formula (i) of 33.0 mN / m
- the resin composition for model materials which is m or more.
- a resin composition for a model material that can be produced, an ink set for optical modeling containing the resin composition for a model material, and a method for producing an optical modeling product using the ink set for optical modeling can be provided.
- FIG. 1 is a figure showing typically process (I) in a manufacturing method of an optical modeling article concerning this embodiment.
- FIG. 2 is a diagram schematically showing step (II) in the method for manufacturing an optically shaped product according to the present embodiment.
- FIG. 3 is a diagram schematically showing a cured product 6 composed of the model material 4 and the support material 5 obtained by repeatedly performing the steps (I) and (II) in the method for manufacturing an optically shaped article according to the present embodiment. It is.
- FIG. 4 is a diagram schematically showing step (III) in the method for manufacturing an optically shaped product according to the present embodiment.
- FIG. 5A is a top view of a cured product obtained using the resin composition for each model material and the resin composition for each support material shown in Table 1.
- FIG. 5B is a cross-sectional view taken along the line AA in FIG.
- (meth) acrylate is a general term for acrylate and methacrylate, and means one or both of acrylate and methacrylate.
- a resin composition for a model material according to the present embodiment is a resin composition for a model material used for modeling a model material by an inkjet optical modeling method, and (A) is ethylenic as a photocuring component It contains an unsaturated monomer, (B) a photopolymerization initiator, and (C) a surface conditioner.
- the surface tension Mt is 26.0 to 33.0 mN / m, and the following formula (i) The represented surface tension Mst is 33.0 mN / m or more.
- the content of the monofunctional ethylenically unsaturated monomer is 5 to 5 parts by weight based on 100 parts by weight of the entire resin composition for a model material. 70 parts by weight.
- the component (A) is 70 parts relative to 100 parts by weight of the entire resin composition for a model material.
- the polyfunctional ethylenically unsaturated monomer is contained in an amount of not more than parts by weight.
- the content of the polyfunctional ethylenically unsaturated monomer is 20 to 20 parts by weight based on 100 parts by weight of the entire resin composition for a model material. 70 parts by weight.
- the resin composition for a model material according to any one of [1] to [6] further includes (D) an oligomer as a photocuring component.
- the content of the component (D) is 10 to 45 parts by weight with respect to 100 parts by weight of the entire resin composition for a model material. .
- the resin composition for model materials according to any one of [1] to [8] described above has the surface tension Mst of 33.0 to 40.0 mN / m.
- An optical modeling ink set according to the present embodiment is used in an inkjet optical modeling method, and the resin composition for a model material according to any one of [1] to [9] and a support
- An ink set for optical modeling comprising a combination with a resin composition for a support material used for modeling a material, wherein the resin composition for a support material is (E) a water-soluble monofunctional ethylenically unsaturated monolith.
- the content of the component (E) is 20 to 50 parts by weight with respect to 100 parts by weight of the entire support material resin composition.
- the content of the component (F) is 20 to 49 weights with respect to 100 parts by weight of the entire support material resin composition. Part.
- the number average molecular weight Mn of the component (F) is 100 to 5,000.
- the surface tension St of the resin composition for a support material is 24.0 to 33.0 mN / m. .
- a method for producing a stereolithography product according to the present embodiment is a method for producing a stereolithography product by using the stereolithography ink set according to any one of [10] to [14] above by an inkjet stereolithography method.
- the resin composition for model material contains (A) an ethylenically unsaturated monomer, (B) a photopolymerization initiator, and (C) a surface conditioner as a photocuring component.
- An ethylenically unsaturated monomer is a photocuring component having the property of being cured by energy rays.
- the component (A) is composed of a monofunctional ethylenically unsaturated monomer having one ethylenic double bond in the molecule, and a polyfunctional ethylenically unsaturated monomer having two or more ethylenic double bonds in the molecule. At least one of the monomers is included.
- the monofunctional ethylenically unsaturated monomer includes at least one of a water-insoluble monofunctional ethylenically unsaturated monomer and a water-soluble monofunctional ethylenically unsaturated monomer.
- Examples of the water-insoluble monofunctional ethylenically unsaturated monomer include linear or branched alkyl (meth) acrylates having 4 to 30 carbon atoms [for example, methyl (meth) acrylate, ethyl (meth) acrylate, isobutyl ( Meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, isostearyl (meth) acrylate, t-butyl (meth) acrylate, etc.], alicyclic-containing (meth) acrylates having 6 to 20 carbon atoms [for example, cyclohexyl (Meth) acrylate, 4-t-cyclohexyl (meth) acrylate, isobornyl (meth) acrylate, 4-t-butylcyclohexanol (meth) acrylate, 3,3,5-trimethylcyclohexanol (meth) acrylate, phenoxye
- the water-insoluble monofunctional ethylenically unsaturated monomer includes 4-t-butylcyclohexanol (meth) acrylate, 3, 3 , 5-trimethylcyclohexanol (meth) acrylate and phenoxyethyl (meth) acrylate are preferred.
- water-soluble monofunctional ethylenically unsaturated monomer examples include a hydroxyl group-containing (meth) acrylate having 5 to 15 carbon atoms [for example, hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, 4-hydroxybutyl ( Meth) acrylate, etc.], hydroxyl group-containing (meth) acrylate having a Mn of 200 to 1,000 [polyethylene glycol mono (meth) acrylate, monoalkoxy (1 to 4 carbon atoms) polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) Acrylate, monoalkoxy (1 to 4 carbon atoms) polypropylene glycol mono (meth) acrylate, mono (meth) acrylate of PEG-PPG block polymer, etc.], (meth) acrylamide derivatives having 3 to 15 carbon atoms ((meth) acrylic) Amide, N-methyl (meth) acrylamide, N-
- the water-soluble monofunctional ethylenically unsaturated monomer is (meth) acryloylmorpholine. It is preferable that
- the total content of water-insoluble monofunctional ethylenically unsaturated monomer and water-soluble monofunctional ethylenically unsaturated monomer is preferably 5 parts by weight or more, more preferably 30 parts by weight or more, and particularly preferably 50 parts by weight or more with respect to 100 parts by weight of the entire resin composition for model materials.
- the content of the monofunctional ethylenically unsaturated monomer is preferably 70 parts by weight or less, more preferably 69 parts by weight or less, with respect to 100 parts by weight of the entire resin composition for model materials. .
- the said content is the sum total of content of each monofunctional ethylenically unsaturated monomer.
- polyfunctional ethylenically unsaturated monomer examples include linear or branched alkylene glycol di (meth) acrylate or alkylene glycol tri (meth) acrylate having 10 to 25 carbon atoms [for example, diethylene glycol di (meth) acrylate, Tripropylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, neopentyl glycol di (meth) acrylate, 1,9-nonanediol di (meth) acrylate, 3-methyl-1,5- Pentanediol di (meth) acrylate, 2-n-butyl-2-ethyl-1,3-propanediol di (meth) acrylate, pentaerythritol tri (meth) acrylate, modified bisphenol A di (meth) acrylate, etc.], carbon Aliphatic ring of several 10 to 30 Containing di (meth
- the polyfunctional ethylenically unsaturated monomer diethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, or A modified bisphenol A di (meth) acrylate is preferred.
- the content of the polyfunctional ethylenically unsaturated monomer is 70 parts by weight or less with respect to 100 parts by weight of the entire resin composition for model materials. Is preferable, and it is more preferably 60 parts by weight or less. Further, the content of the polyfunctional ethylenically unsaturated monomer is preferably 20 parts by weight or more, more preferably 30 parts by weight or more with respect to 100 parts by weight of the entire resin composition for model materials. . In addition, when 2 or more types of polyfunctional ethylenically unsaturated monomers are contained, the said content is the sum total of content of each polyfunctional ethylenically unsaturated monomer.
- the content of the component (A) is preferably 80 parts by weight or more with respect to 100 parts by weight of the model material resin composition as a whole. More preferably, it is at least part by weight. In addition, the content of the component (A) is preferably 99 parts by weight or less, and more preferably 95 parts by weight or less. In addition, when the said (A) component is contained 2 or more types, the said content is the sum total of content of each (A) component.
- Photopolymerization initiator is a compound which accelerates
- component (B) examples include benzoin compounds having 14 to 18 carbon atoms (for example, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin propyl ether, benzoin isobutyl ether, etc.), acetophenone compounds having 8 to 18 carbon atoms [ For example, acetophenone, 2,2-diethoxy-2-phenylacetophenone, 2,2-diethoxy-2-phenylacetophenone, 1,1-dichloroacetophenone, 2-hydroxy-2-methyl-phenylpropan-1-one, diethoxy Acetophenone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one, etc.], an anthraquinone compound having 14 to 19 carbon atoms [for example, 2-ethylamine Traquinone, 2-t-butylanthraquinone, 2-chloroan
- the component (B) includes 2,4,6-trimethylbenzoyl-diphenyl- Phosphine oxide is preferred.
- DAROCURE TPO manufactured by BASF, etc.
- the content of the component (B) is preferably 1 part by weight or more and more preferably 3 parts by weight or more with respect to 100 parts by weight of the entire resin composition for a model material from the viewpoint of photopolymerization. preferable.
- the content of the component (B) is preferably 15 parts by weight or less, and more preferably 13 parts by weight or less.
- the said content is the sum total of content of each (B) component.
- the surface conditioner is a component that adjusts the surface tension of the resin composition to an appropriate range.
- a silicone type compound etc. are mentioned, for example.
- the silicone compound include a silicone compound having a polydimethylsiloxane structure. Specific examples include polyether-modified polydimethylsiloxane, polyester-modified polydimethylsiloxane, and polyaralkyl-modified polydimethylsiloxane.
- the content of the component (C) is 0.005 parts by weight or more with respect to 100 parts by weight of the entire resin composition for model materials. Preferably, it is 0.01 parts by weight or more.
- the content of the component (C) is preferably 3.0 parts by weight or less, and more preferably 1.5 parts by weight or less.
- the said content is the sum total of content of each (C) component.
- the resin composition for a model material according to the present embodiment preferably further contains (D) an oligomer.
- the component (D) is a photocuring component having a property of being cured by energy rays.
- Examples of the component (D) include urethane (meth) acrylate oligomers, epoxy (meth) acrylate oligomers, polyester (meth) acrylate oligomers, and polyether (meth) acrylate oligomers. These may be used alone or in combination of two or more.
- the component (D) is preferably a urethane (meth) acrylate oligomer.
- the content of the component (D) is preferably 10 parts by weight or more with respect to 100 parts by weight of the entire model material resin composition. More preferably, it is at least part by weight. In addition, the content of the component (D) is preferably 45 parts by weight or less, and more preferably 40 parts by weight or less. In addition, when the said (D) component is contained 2 or more types, the said content is the sum total of content of each (D) component.
- oligomer refers to those having a weight average molecular weight of 800 to 10,000.
- the weight average molecular weight means a weight average molecular weight in terms of polystyrene measured by GPC (Gel Permeation Chromatography).
- the resin composition for a model material can contain other additives as necessary within a range that does not impair the effects of the present invention.
- other additives include an antioxidant, a colorant, a pigment dispersant, a storage stabilizer, an ultraviolet absorber, a light stabilizer, a polymerization inhibitor, a chain transfer agent, and a filler.
- colorant examples include diarylide colorants, condensed azo colorants, quinacridone colorants, vat colorants, isoindolinone colorants, phthalocyanine colorants, aniline colorants, titanium oxide, nickel titanium.
- Conventionally known materials such as yellow iron oxide, dial, ultramarine, cobalt blue, chromium oxide, iron black, yellow lead, chrome orange, molybdenum red, cadmium colorant, and carbon black can be used. These may be used alone or in combination of two or more.
- the colorant for example, carbon black, nickel azo that is a condensed azo colorant, quinacridone that is a quinacridone colorant, copper phthalocyanine that is a phthalocyanine colorant, titanium oxide, and the like are preferable.
- the content of the colorant is preferably 0.01 parts by weight or more and more preferably 0.1 parts by weight or more with respect to 100 parts by weight of the entire resin composition for model materials. Further, the content of the colorant is preferably 5.0 parts by weight or less, and more preferably 3.0 parts by weight or less.
- the pigment dispersant may be contained in order to improve the dispersibility of the pigment.
- the pigment dispersant include ionic or nonionic surfactants, anionic, cationic or nonionic polymer compounds. These may be used alone or in combination of two or more.
- the pigment dispersant is preferably a polymer compound containing a cationic group or an anionic group.
- pigment dispersants available on the market include Solsperse manufactured by Avicia, DISPERBYK manufactured by BYK Chemie, EFKA manufactured by Fuka Additives, and the like.
- the content of the pigment dispersant is preferably 0.05 parts by weight or more, and preferably 5 parts by weight or less, with respect to 100 parts by weight of the entire resin composition for a model material.
- a storage stabilizer may be included in order to increase the storage stability of the resin composition.
- the storage stabilizer include hindered amine compounds (HALS), phenolic antioxidants, phosphorus antioxidants, and the like. Specifically, hydroquinone, methoquinone, benzoquinone, p-methoxyphenol, hydroquinone monomethyl ether, hydroquinone monobutyl ether, TEMPO, 4-hydroxy-TEMPO, TEMPOL, cuperon Al, IRGASTAB UV-10, IRGASTAB UV-22, FIRSTCURE ST- 1 (manufactured by ALBEMARLE), t-butylcatechol, pyrogallol, TINUVIN 111 FDL, TINUVIN 144, TINUVIN 292, TINUVIN XP40, TINUVIN XP60, TINUVIN 400, etc. manufactured by BASF. These may be used alone or in combination of two or more.
- the resin composition for the model material is not particularly limited.
- the above-described components (A) to (C) and, if necessary, the (D) oligomer and other additives are mixed and stirred. It can manufacture by mixing uniformly using etc.
- the resin composition for a model material produced in this manner preferably has a viscosity at 25 ° C. of 70 mPa ⁇ s or less from the viewpoint of improving the dischargeability from the inkjet head.
- the measurement of the viscosity of the resin composition for model materials is performed using R100 type
- the resin composition for a model material has a surface tension Mt of 26.0 to 33.0 mN / m from the viewpoint of improving dischargeability from the inkjet head.
- the surface tension refers to the value of the surface tension 20 seconds after the start of measurement at 25 ° C.
- the surface tension is measured using, for example, a fully automatic equilibrium type electro surface tension meter ESB-V (manufactured by Kyowa Interface Science Co., Ltd.).
- the resin composition for a model material has a surface tension (also referred to as equivalent surface tension) Mst represented by the formula (i) of 33.0 mN / m or more.
- a surface tension also referred to as equivalent surface tension
- Mst represented by the formula (i) of 33.0 mN / m or more.
- a stereolithography product with good dimensional accuracy can be obtained by using the stereolithography ink set formed by combining such a resin composition for a model material and a resin composition for a support material.
- the surface tension Mst is preferably 40.0 mN / m or less, and more preferably 39.0 mN / m or less.
- the photocuring component in a formula is a component which has the characteristic hardened
- (A) the ethylenically unsaturated monomer and the optional component (D) oligomer are photocuring components.
- the resin composition for model materials according to the present embodiment may include other photocuring components.
- Resin composition for support material comprises (E) a water-soluble monofunctional ethylenically unsaturated monomer, (F) a polyalkylene glycol containing an oxyethylene group and / or an oxypropylene group, B) A photopolymerization initiator and (C) a surface conditioner are contained.
- the content of the component (E) improves the curability of the resin composition for the support material, and from the viewpoint of quickly dissolving the support material obtained by photocuring the resin composition for the support material in water.
- the amount is preferably 20 parts by weight or more and more preferably 25 parts by weight or more with respect to 100 parts by weight of the entire resin composition for materials.
- the content of the component (E) is preferably 50 parts by weight or less, and more preferably 45 parts by weight or less.
- the said content is the sum total of content of each (E) component.
- the polyalkylene glycol containing an oxyethylene group and / or oxypropylene group is obtained by adding at least ethylene oxide and / or propylene oxide to an active hydrogen compound.
- the component (F) include polyethylene glycol and polypropylene glycol. These may be used alone or in combination of two or more.
- the active hydrogen compound include monohydric to tetrahydric alcohols and amine compounds. Among these, the active hydrogen compound is preferably a dihydric alcohol or water.
- the content of the component (F) is based on 100 parts by weight of the entire support material resin composition. It is preferably 20 parts by weight or more, and more preferably 25 parts by weight or more. In addition, the content of the component (F) is preferably 49 parts by weight or less, and more preferably 45 parts by weight or less. In addition, when the said (F) component is contained 2 or more types, the said content is the sum total of content of each (F) component.
- the number average molecular weight Mn of the component (F) is preferably 100 to 5,000.
- Mn of the component (F) is within the above range, it is compatible with the component (F) before photocuring and is not compatible with the component (F) after photocuring.
- the Mn of the component (F) is more preferably 200 to 3,000, and further preferably 400 to 2,000.
- the resin composition for the support material can contain other additives as necessary within a range that does not impair the effects of the present invention.
- other additives include water-soluble organic solvents, antioxidants, colorants, pigment dispersants, storage stabilizers, ultraviolet absorbers, light stabilizers, polymerization inhibitors, chain transfer agents, and fillers. Can be mentioned.
- water-soluble organic solvents examples include ethylene glycol monoacetate, propylene glycol monoacetate, diethylene glycol monoacetate, dipropylene glycol monoacetate, triethylene glycol monoacetate, tripropylene glycol monoacetate, tetraethylene glycol monoacetate, tetrapropylene glycol.
- the water-soluble organic solvent may be triethylene glycol monomethyl ether or dipropylene. More preferred is glycol monomethyl ether acetate.
- the content of the water-soluble organic solvent is from the viewpoint of improving the solubility of the support material in water and adjusting the resin composition for the support material to a low viscosity with respect to 100 parts by weight of the entire resin composition for the support material.
- the amount is preferably 5 parts by weight or more, and more preferably 10 parts by weight or more.
- the content of the water-soluble organic solvent is preferably 35 parts by weight or less, and more preferably 30 parts by weight or less.
- the said content is the sum total of content of each water-soluble organic solvent.
- the same components as in the resin composition for model materials can be used in the same content.
- the method for producing the resin composition for support material is not particularly limited.
- the components (B), (C), (E), (F) and, if necessary, other additives can be produced by uniformly mixing using a mixing and stirring device or the like. .
- the thus-prepared resin composition for a support material preferably has a viscosity at 25 ° C. of 70 mPa ⁇ s or less from the viewpoint of improving the dischargeability from the inkjet head.
- the measurement of the viscosity of the resin composition for support materials is performed using R100 type
- the support material resin composition preferably has a surface tension of 24.0 to 33.0 mN / m from the viewpoint of improving dischargeability from the inkjet head.
- the surface tension refers to the value of the surface tension 20 seconds after the start of measurement at 25 ° C.
- the surface tension is measured using, for example, a fully automatic equilibrium type electro surface tension meter ESB-V (manufactured by Kyowa Interface Science Co., Ltd.).
- optical modeling product and manufacturing method thereof The optical modeling product is manufactured by the inkjet optical modeling method using the resin composition for a model material according to the present embodiment and the optical modeling ink set including the resin composition for the model material. Is done. Specifically, from the inkjet head to the model material, the resin composition layer in which the layer composed of the resin composition for model material and the layer composed of the resin composition for support material are adjacently formed is formed. A step (I) of discharging the resin composition and the resin composition for the support material, and a model by photocuring the resin composition for the model material and the resin composition for the support material that constitute the resin composition layer, respectively.
- step (II) of obtaining a material and a support material It is manufactured through a step (II) of obtaining a material and a support material and a step (III) of obtaining an optically shaped product by removing the support material.
- the steps (I) to (III) are not particularly limited, but are performed, for example, by the following method.
- Drawing 1 is a figure showing typically process (I) in a manufacturing method of an optical modeling article concerning this embodiment.
- the three-dimensional modeling apparatus 1 includes an inkjet head module 2 and a modeling table 3.
- the inkjet head module 2 includes an optical modeling ink unit 25, a roller 23, and a light source 24.
- the optical modeling ink unit 25 includes a model material inkjet head 21 filled with a model material resin composition 4a and a support material inkjet head 22 filled with a support material resin composition 5a.
- the optical modeling ink set 20 according to the present embodiment is configured by combining the resin composition 4a for a model material and the resin composition 5a for a support material.
- the inkjet head module 2 is scanned relative to the modeling table 3 in FIG. 1 in the X direction and the Y direction, and the model material resin composition 4a is discharged from the model material inkjet head 21; and Then, the support material resin composition 5 a is discharged from the support material ink jet head 22.
- the resin composition layer arrange
- the roller 23 is used and the excess resin composition 4a for model materials and the resin composition 5a for support materials are removed.
- FIG. 2 is a diagram schematically showing step (II) in the method for manufacturing an optically shaped product according to the present embodiment.
- the resin composition layer formed in the step (I) is irradiated with light using a light source 24, thereby forming a cured layer composed of the model material 4 and the support material 5.
- FIG. 3 is a diagram schematically showing a cured product 6 composed of the model material 4 and the support material 5 obtained by repeatedly performing the steps (I) and (II) in the method for manufacturing an optically shaped article according to the present embodiment. It is.
- Examples of light for curing the resin composition include far infrared rays, infrared rays, visible rays, near ultraviolet rays, and ultraviolet rays. Among these, near ultraviolet rays or ultraviolet rays are preferable from the viewpoint of the ease and efficiency of the curing operation. *
- the light source 24 examples include a mercury lamp, a metal halide lamp, an ultraviolet LED, and an ultraviolet laser. Among these, it is preferable that the light source 24 is ultraviolet LED from a viewpoint of size reduction of an installation and power saving. In addition, when ultraviolet LED is used as the light source 24, it is preferable that the integrated light quantity of an ultraviolet-ray is about 500 mJ / cm ⁇ 2 >.
- FIG. 4 is a diagram schematically showing step (III) in the method for manufacturing an optically shaped product according to the present embodiment.
- the cured product 6 made of the model material 4 and the support material 5 produced in step (III) is immersed in a solvent 8 placed in a container 7. Thereby, the support material 5 can be dissolved in the solvent 8 and removed.
- Examples of the solvent 8 for dissolving the support material 5 include ion exchange water, distilled water, tap water, and well water. Among these, it is preferable that the solvent 8 is ion-exchanged water from the viewpoint of relatively few impurities and being available at a low cost.
- an optical modeling product with good dimensional accuracy can be obtained using the resin composition for model materials and the optical modeling ink set according to the present embodiment.
- each resin composition for each model material and each resin composition for each support material is performed by using an LED light source having a wavelength of 385 nm installed on the back side of the inkjet head with respect to the scanning direction, and an illuminance of 580 mW. / Cm 2 , and the integrated light quantity per layer of the resin composition layer was 600 mJ / cm 2 .
- the support material was removed by immersing the cured product in ion-exchanged water to obtain a stereolithographic product. Thereafter, the obtained stereolithography product was allowed to stand in a desiccator for 24 hours and sufficiently dried.
- ⁇ Bleeding evaluation method> First, on a film made of polyethylene terephthalate (A4300, manufactured by Toyobo Co., Ltd., 100 mm ⁇ 150 mm ⁇ thickness 188 ⁇ m), the resin composition for each model material and the resin composition for each support material shown in Table 1 were used using a micropipette. Then, 0.02 mL of each was dropped. At this time, in the resin composition for the model material and the resin composition for the support material, the distance between the central portions of the respective droplets was 10 mm, and the respective droplets were independent. Thereafter, the respective droplets gradually spread and spread, and after about 10 seconds, the respective droplets were combined.
- A4300 polyethylene terephthalate
- the test No. with good dimensional accuracy was obtained.
- the interface between the layer made of the resin composition for model material and the layer made of the resin composition for support material was linear, and bleeding did not occur.
- test no In the optically shaped articles A1 and A3, the resin composition for model material moves to the resin composition side for support material at the interface between the layer made of the resin composition for model material and the layer made of the resin composition for support material.
- bleeding occurred.
- bleeding that occurs at the interface between the layer made of the resin composition for a model material and the layer made of the resin composition for the support material is one of the causes for reducing the dimensional accuracy of the stereolithography product. Therefore, in the following, the bleeding that occurs at the interface between the layer composed of the resin composition for model material and the layer composed of the resin composition for support material was evaluated.
- BCHA 4-tert-butylcyclohexanol acrylate [SR217 (ethylenic double bond / one molecule), manufactured by Arkema Co., Ltd.]
- TMCHA 3,3,5-trimethylcyclohexanol acrylate
- ACMO acryloyl morpholine [ACMO (ethylenic double bond / one molecule: one), manufactured by KJ Chemicals]
- PEA Phenoxyethyl acrylate [SR339 (ethylenic double bond / one molecule), manufactured by Arkema Corporation]
- DEGDA Diethylene glycol diacrylate [SR230 (ethylenic double bond / one molecule: 2), manufactured by Arkema Corporation]
- A-NPA alkoxylated neopentyl glycol diacrylate [SR9003 (ethylenic double bond / 1 molecule: 2)
- ACMO acryloyl morpholine
- ACMO acryloyl morpholine
- PPG-1000 Polypropylene glycol [Uniol D1000 (molecular weight 1000), manufactured by NOF Corporation]
- DAROCURE TPO 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide
- IRGACURE907 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one
- IRGACURE907 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one
- IRGACURE 907 manufactured by Ciba]
- Chivacure ITX Isopropylthioxanthone [Chivacure ITX, manufactured by Double Bond Chemical Co., Ltd.]
- BYK-307 Silicone compound having a polydimethylsiloxane structure [BYK-307, manufactured by Big Chemie]
- MTG Triethylene glycol
- ⁇ Discharge stability evaluation method The ejection stability of each of the resin compositions for model materials M1 to M23 shown in Table 2 and each of the resin compositions for support materials S1 to S6 shown in Table 3 is the ratio of nozzle missing and the length of the ligament. Was evaluated by calculating.
- the resin compositions for model materials of M3 to M7 and M11 to M21 whose surface tension Mt is 26.0 to 33.0 mN / m are excellent in ejection stability.
- the resin composition for a support material of S3 to S5 having a surface tension St of 24.0 to 33.0 mN / m is excellent in ejection stability.
- the model material resin composition and the support material resin composition are composed of a model material resin composition and a support material resin composition.
- the interface was linear with the top view, and bleeding did not occur.
- the resin composition for a model material and the resin composition for a support material of 1, 2, 8, 9, 17, 18, 24 and 25 are a layer made of a resin composition for a model material and a layer made of a resin composition for a support material Bleeding occurred at the interface.
- test No. in which the surface tension Mt does not satisfy the requirements of the present invention.
- the resin compositions for model material and the support material 10 and 26 slight blur occurred at the interface between the layer made of the resin material for model material and the layer made of the resin composition for support material.
- Model Material Resin Composition and Support Material Resin Composition are a layer comprising a model material resin composition and a support material resin composition. Since bleeding has occurred at the interface with the layer made of, the dimensional accuracy of the optically shaped product is reduced.
- the method for producing an optically shaped article according to the embodiment further includes ejecting only the resin composition for model material from the inkjet head so that only the layer made of the resin composition for model material is formed.
- a resin for supporting material is formed from an inkjet head so that only a step of obtaining a model material by photocuring the resin composition for model material and / or a layer made of the resin composition for supporting material is formed. After discharging only the composition, a step of obtaining a support material by photocuring the resin composition for the support material constituting the layer may be included.
- the resin composition for model materials of the present invention and the optical modeling ink set including the resin composition for model materials can provide an optical modeling product with good dimensional accuracy. Therefore, the resin composition for a model material and the ink set for optical modeling of the present invention can be suitably used for manufacturing an optical modeling product by an ink jet optical modeling method.
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Abstract
Description
モデル材用樹脂組成物は、(A)光硬化成分としてエチレン性不飽和単量体と、(B)光重合開始剤と、(C)表面調整剤とを含有する。
(A)エチレン性不飽和単量体は、エネルギー線により硬化する特性を有する光硬化成分である。前記(A)成分は、分子内にエチレン性二重結合を1個有する単官能エチレン性不飽和単量体、および、分子内にエチレン性二重結合を2個以上有する多官能エチレン性不飽和単量体のうち少なくとも一方を含む。また、単官能エチレン性不飽和単量体は、非水溶性単官能エチレン性不飽和単量体、および、水溶性単官能エチレン性不飽和単量体のうち少なくとも一方を含む。
(B)光重合開始剤は、紫外線、近紫外線または可視光領域の波長の光を照射するとラジカル反応を促進する化合物であれば、特に限定されない。前記(B)成分としては、例えば、炭素数14~18のベンゾイン化合物〔例えば、ベンゾイン、ベンゾインメチルエーテル、ベンゾインエチルエーテル、ベンゾインプロピルエーテル、ベンゾインイソブチルエーテル等〕、炭素数8~18のアセトフェノン化合物〔例えば、アセトフェノン、2,2-ジエトキシ-2-フェニルアセトフェノン、2,2-ジエトキシ-2-フェニルアセトフェノン、1,1-ジクロロアセトフェノン、2-ヒドロキシ-2-メチル-フェニルプロパン-1-オン、ジエトキシアセトフェノン、1-ヒドロキシシクロヘキシルフェニルケトン、2-メチル-1-[4-(メチルチオ)フェニル]-2-モルフォリノプロパン-1-オン等〕、炭素数14~19のアントラキノン化合物〔例えば、2-エチルアントラキノン、2-t-ブチルアントラキノン、2-クロロアントラキノン、2-アミルアントラキノン等〕、炭素数13~17のチオキサントン化合物〔例えば、2,4-ジエチルチオキサントン、2-イソプロピルチオキサントン、2-クロロチオキサントン等〕、炭素数16~17のケタール化合物〔例えば、アセトフェノンジメチルケタール、ベンジルジメチルケタール等〕、炭素数13~21のベンゾフェノン化合物〔例えば、ベンゾフェノン、4-ベンゾイル-4’-メチルジフェニルサルファイド、4,4’-ビスメチルアミノベンゾフェノン等〕、炭素数22~28のアシルフォスフィンオキサイド化合物〔例えば、2,4,6-トリメチルベンゾイル-ジフェニル-フォスフィンオキサイド、ビス-(2、6-ジメトキシベンゾイル)-2,4,4-トリメチルペンチルフォスフィンオキサイド、ビス(2,4,6-トリメチルベンゾイル)-フェニルフォスフィンオキサイド〕、これらの化合物の混合物等が挙げられる。これらは単独で用いてもよいし、2種以上を併用してもよい。これらの中でも、モデル材用樹脂組成物を光硬化させて得られるモデル材が黄変しにくいという耐光性の観点から、前記(B)成分としては、2,4,6-トリメチルベンゾイル-ジフェニル-フォスフィンオキサイドであることが好ましい。また、市場で入手可能なアシルフォスフィンオキサイド化合物としては、例えば、BASF社製のDAROCURE TPO等が挙げられる。
(C)表面調整剤は、樹脂組成物の表面張力を適切な範囲に調整する成分である。前記(C)成分としては、例えば、シリコーン系化合物等が挙げられる。シリコーン系化合物としては、例えば、ポリジメチルシロキサン構造を有するシリコーン系化合物等が挙げられる。具体的には、ポリエーテル変性ポリジメチルシロキサン、ポリエステル変性ポリジメチルシロキサン、ポリアラルキル変性ポリジメチルシロキサン等が挙げられる。これらとして、商品名でBYK-300、BYK-302、BYK-306、BYK-307、BYK-310、BYK-315、BYK-320、BYK-322、BYK-323、BYK-325、BYK-330、BYK-331、BYK-333、BYK-337、BYK-344、BYK-370、BYK-375、BYK-377、BYK-UV3500、BYK-UV3510、BYK-UV3570(以上、ビックケミー社製)、TEGO-Rad2100、TEGO-Rad2200N、TEGO-Rad2250、TEGO-Rad2300、TEGO-Rad2500、TEGO-Rad2600、TEGO-Rad2700(以上、デグサ社製)、グラノール100、グラノール115、グラノール400、グラノール410、グラノール435、グラノール440、グラノール450、B-1484、ポリフローATF-2、KL-600、UCR-L72、UCR-L93(共栄社化学社製)等を用いてもよい。これらは単独で用いてもよいし、2種以上を併用してもよい。
本実施形態に係るモデル材用樹脂組成物は、さらに、(D)オリゴマーを含有することが好ましい。前記(D)成分は、エネルギー線により硬化する特性を有する光硬化成分である。前記(D)成分としては、例えば、ウレタン(メタ)アクリレートオリゴマー、エポキシ(メタ)アクリレートオリゴマー、ポリエステル(メタ)アクリレートオリゴマー、ポリエーテル(メタ)アクリレートオリゴマー等が挙げられる。これらは単独で用いてもよいし、2種以上を併用してもよい。これらの中でも、モデル材用樹脂組成物の硬化性を向上させる観点から、前記(D)成分としては、ウレタン(メタ)アクリレートオリゴマーであることが好ましい。
サポート材用樹脂組成物は、(E)水溶性単官能エチレン性不飽和単量体と、(F)オキシエチレン基および/またはオキシプロピレン基を含むポリアルキレングリコールと、(B)光重合開始剤と、(C)表面調整剤と、を含有する。
(E)水溶性単官能エチレン性不飽和単量体は、前記モデル材用樹脂組成物と同様の成分を用いることができる。
(F)オキシエチレン基および/またはオキシプロピレン基を含むポリアルキレングリコールは、活性水素化合物に少なくともエチレンオキサイドおよび/またはプロピレンオキサイドが付加したものである。前記(F)成分としては、例えば、ポリエチレングリコール、ポリプロピレングリコール等が挙げられる。これらは単独で用いてもよいし、2種以上を併用してもよい。活性水素化合物としては、1~4価アルコール、アミン化合物等が挙げられる。これらの中でも、活性水素化合物としては、2価アルコールまたは水であることが好ましい。
<(C)表面調整剤>
(B)光重合開始剤および(C)表面調整剤は、前記モデル材用樹脂組成物と同様の成分を同様の含有量で用いることができる。
光造形品は、インクジェット光造形法により、本実施形態に係るモデル材用樹脂組成物、および、該モデル材用樹脂組成物を含む光造形用インクセットを用いて製造される。具体的には、モデル材用樹脂組成物からなる層とサポート材用樹脂組成物からなる層とが隣接して配置された樹脂組成物層が形成されるように、インクジェットヘッドから前記モデル材用樹脂組成物および前記サポート材用樹脂組成物を吐出させる工程(I)と、前記樹脂組成物層を構成するモデル材用樹脂組成物およびサポート材用樹脂組成物をそれぞれ光硬化させることにより、モデル材およびサポート材を得る工程(II)と、前記サポート材を除去することにより、光造形品を得る工程(III)とを経て製造される。前記工程(I)~(III)は、特に限定されないが、例えば、以下の方法により行われる。
図1は、本実施形態に係る光造形品の製造方法における工程(I)を模式的に示す図である。図1に示すように、三次元造形装置1は、インクジェットヘッドモジュール2および造形テーブル3を含む。インクジェットヘッドモジュール2は、光造形用インクユニット25と、ローラー23と、光源24とを有する。光造形用インクユニット25は、モデル材用樹脂組成物4aが充填されたモデル材用インクジェットヘッド21と、サポート材用樹脂組成物5aが充填されたサポート材用インクジェットヘッド22とを有する。なお、本実施形態に係る光造形用インクセット20は、モデル材用樹脂組成物4aとサポート材用樹脂組成物5aとを組み合わせることにより構成されている。
図2は、本実施形態に係る光造形品の製造方法における工程(II)を模式的に示す図である。図2に示すように、工程(I)により形成された樹脂組成物層に、光源24を用いて光を照射することにより、モデル材4およびサポート材5からなる硬化層が形成される。
図4は、本実施形態に係る光造形品の製造方法における工程(III)を模式的に示す図である。図4に示すように、工程(III)で作製したモデル材4およびサポート材5からなる硬化物6は、容器7に入れた溶媒8中に浸漬させる。これにより、サポート材5を溶媒8に溶解させて、除去することができる。
<寸法精度の評価方法>
表1に示す試験No.A1~A4の各モデル材用樹脂組成物および各サポート材用樹脂組成物を用いて、硬化物を作成した。該硬化物の形状および目標とする寸法を、図5(a)および(b)に示す。なお、インクジェットヘッドから各モデル材用樹脂組成物および各サポート材用樹脂組成物を吐出させる工程は、解像度が600×600dpi、樹脂組成物層の1層の厚さが48μmとなるように行った。また、各モデル材用樹脂組成物および各サポート材用樹脂組成物をそれぞれ光硬化させる工程は、スキャン方向に対してインクジェットヘッドの後ろ側に設置された波長385nmのLED光源を用いて、照度580mW/cm2、樹脂組成物層の1層当りの積算光量600mJ/cm2の条件で行った。次に、前記硬化物をイオン交換水に浸漬することにより、サポート材を除去して、光造形品を得た。その後、得られた光造形品をデシケーター内に24時間静置し、充分に乾燥させた。上述の工程により、試験No.A1~A4の光造形品を、それぞれ5個ずつ製造した。乾燥後の光造形品について、図5(a)中のx方向およびy方向の寸法を、ノギスを用いて測定し、目標とする寸法からの変化率を算出した。寸法精度は、試験No.A1~A4の各光造形品における寸法変化率の平均値を求め、該平均値を用いて下記の基準により評価を行った。評価結果を表1に示す。
○:平均寸法変化率が±1.0%未満
×:平均寸法変化率が±1.0%以上
まず、ポリエチレンテレフタレートからなるフィルム(A4300、東洋紡社製、100mm×150mm×厚さ188μm)上に、表1に示す各モデル材用樹脂組成物および各サポート材用樹脂組成物を、マイクロピペットを用いて、各0.02mL滴下した。この際、モデル材用樹脂組成物およびサポート材用樹脂組成物は、それぞれの液滴の中心部同士の距離が10mmであり、かつ、それぞれの液滴は独立していた。その後、それぞれの液滴は徐々に濡れ広がり、約10秒後にそれぞれの液滴が結合した。この際、それぞれの液滴の界面の状態を上方から目視により観察し、下記の基準においてブリーディングを評価した。評価結果を表1に示す。
○:モデル材用樹脂組成物からなる層とサポート材用樹脂組成物からなる層との界面が上面視で直線状になり、ブリーディングが生じなかった。
△:モデル材用樹脂組成物からなる層とサポート材用樹脂組成物からなる層との界面において、わずかなにじみが生じた。
×:モデル材用樹脂組成物からなる層とサポート材用樹脂組成物からなる層との界面において、にじみが生じた。
<樹脂組成物の調整>
(モデル材用樹脂組成物の調整)
表2に示す配合で、(A)~(D)成分、および、その他の添加剤を、混合攪拌装置を用いて均一に混合し、M1~M23のモデル材用樹脂組成物を製造した。
TMCHA:3,3,5-トリメチルシクロヘキサノールアクリレート[SR420(エチレン性二重結合/1分子:1個)、アルケマ社製]
ACMO:アクリロイルモルフォリン[ACMO(エチレン性二重結合/1分子:1個)、KJケミカルズ社製]
PEA:フェノキシエチルアクリレート[SR339(エチレン性二重結合/1分子:1個)、アルケマ社製]
DEGDA:ジエチレングリコールジアクリレート[SR230(エチレン性二重結合/1分子:2個)、アルケマ社製]
A-NPA:アルコキシ化ネオペンチルグリコールジアクリレート[SR9003(エチレン性二重結合/1分子:2個)、アルケマ社製]
Ebe150:変性ビスフェノールAジアクリレート[Ebacryl150(エチレン性二重結合/1分子:2個)、ダイセル・オルネクス社製]
DAROCURE TPO:2,4,6-トリメチルベンゾイル-ジフェニル-フォスフィンオキサイド[DAROCURE TPO、BASF社製]
IRGACURE907:2-メチル-1-[4-(メチルチオ)フェニル]-2-モルフォリノプロパン-1-オン[IRGACURE 907、チバ社製]
Chivacure ITX:2-イソプロピルチオキサントン[Chivacure ITX、ダブルボンドケミカル社製]
BYK-UV3500:ポリジメチルシロキサン構造を有するシリコーン系化合物[BYK-UV3500、ビックケミー社製]
CN996:ウレタンアクリレートオリゴマー[CN996(エチレン性二重結合/1分子:2個)、アルケマ社製]
MA-8:酸性カーボンブラック顔料[MA-8、三菱化学社製]
Yellow G01:ニッケルアゾ顔料[Yellow G01、Levascreen社製]
RT355D:キナクリドン顔料[CINQUASIA Magenda RT-355-D、チバ社製]
BT-617-D:銅フタロシアニン顔料[HOSTAPERM BLUE BT-617-D、クラリアント社製]
CR-60:酸化チタン[CR-60、石原産業社製]
Sol.32000:塩基性官能基を有する櫛型コポリマー[ソルスパース32000、アビシア社製]
表3に示す配合で、(B)、(C)、(E)、(F)成分、および、水溶性有機溶剤を、混合攪拌装置を用いて均一に混合し、S1~S6のサポート材用樹脂組成物を製造した。
PPG-1000:ポリプロピレングリコール[ユニオールD1000(分子量1000)、日油社製]
DAROCURE TPO:2,4,6-トリメチルベンゾイル-ジフェニル-フォスフィンオキサイド[DAROCURE TPO、BASF社製]
IRGACURE907:2-メチル-1-[4-(メチルチオ)フェニル]-2-モルフォリノプロパン-1-オン[IRGACURE 907、チバ社製]
Chivacure ITX:イソプロピルチオキサントン[Chivacure ITX、ダブルボンドケミカル社製]
BYK-307:ポリジメチルシロキサン構造を有するシリコーン系化合物[BYK-307、ビックケミー社製]
MTG:トリエチレングリコールモノメチルエーテル[MTG、日本乳化剤社製]
表2に示すM1~M23の各モデル材用樹脂組成物および該モデル材用樹脂組成物に含まれる各光硬化成分、ならびに、表3に示すS1~S6の各サポート材用樹脂組成物および該サポート材用樹脂組成物に含まれる各光硬化成分の表面張力は、25℃における、測定開始から20秒後の値を、全自動平衡式エレクトロ表面張力計ESB-V(協和界面科学社製)を用いて測定した。測定結果を表2および表3に示す。
表2に示すM1~M23の各モデル材用樹脂組成物および表3に示すS1~S6の各サポート材用樹脂組成物の吐出安定性は、ノズル抜けが発生した割合、および、リガメントの長さを算出することにより、評価した。
ノズル径:20μm、飛翔速度:7m/sec、吐出周波数:10kHz、連続吐出時間:5minの条件で連続吐出を行うことによりノズルチェックパターンを印字し、ノズル抜けが発生したノズルの本数を数えた。そして、下記の基準において、ノズル抜けが発生した割合を評価した。評価結果を表2および表3に示す。なお、ノズル抜けとは、ノズルが詰まることにより、インクが吐出されない状態をいう。
○:ノズル抜け0%
△:ノズル抜け0%超~5%未満
×:ノズル抜け5%以上
ノズル径:20μm、飛翔速度:7m/sec、吐出周波数:1kHzの条件で吐出を行い、ノズルから距離1mmの位置において、液滴先頭が通過してから液滴最後尾が通過するまでの時間を測定した後、該時間と飛翔速度とを積算することにより、リガメントの長さを算出した。そして、下記の基準において、リガメントの長さを評価した。評価結果を表2および表3に示す。なお、リガメントの長さとは、ノズルから吐出される液滴の長さをいう。リガメントの長さが長いと、インクミストが発生しやすくなる。
○:リガメントの長さ300μm未満
△:リガメントの長さ300~500μm
×:リガメントの長さ500μm超
表2に示すM1~M21の各モデル材用樹脂組成物および表3に示すS3およびS4の各サポート材用樹脂組成物を用いて、上述と同様の方法でブリーディングを評価した。評価結果を表4および表5に示す。
前記実施形態に係る光造形品の製造方法は、さらに、モデル材用樹脂組成物からなる層のみが形成されるように、インクジェットヘッドからモデル材用樹脂組成物のみを吐出させた後、該層を構成するモデル材用樹脂組成物を光硬化させることにより、モデル材を得る工程、および/または、サポート材用樹脂組成物からなる層のみが形成されるように、インクジェットヘッドからサポート材用樹脂組成物のみを吐出させた後、該層を構成するサポート材用樹脂組成物を光硬化させることにより、サポート材を得る工程を含んでいてもよい。
Claims (15)
- 前記(A)成分は、前記モデル材用樹脂組成物全体100重量部に対して、70重量部以下の単官能エチレン性不飽和単量体を含む、請求項1に記載のモデル材用樹脂組成物。
- 前記単官能エチレン性不飽和単量体の含有量は、前記モデル材用樹脂組成物全体100重量部に対して、5~70重量部である、請求項2に記載のモデル材用樹脂組成物。
- 前記(A)成分は、前記モデル材用樹脂組成物全体100重量部に対して、70重量部以下の多官能エチレン性不飽和単量体を含む、請求項1~3のいずれか一つに記載のモデル材用樹脂組成物。
- 前記多官能エチレン性不飽和単量体の含有量は、前記モデル材用樹脂組成物全体100重量部に対して、20~70重量部である、請求項4に記載のモデル材用樹脂組成物。
- 前記(A)成分の含有量は、前記モデル材用樹脂組成物全体100重量部に対して、80~99重量部である、請求項1~5のいずれか一つに記載のモデル材用樹脂組成物。
- さらに、(D)光硬化成分としてのオリゴマーを含有する、請求項1~6のいずれか一つに記載のモデル材用樹脂組成物。
- 前記(D)成分の含有量は、前記モデル材用樹脂組成物全体100重量部に対して、10~45重量部である、請求項7に記載のモデル材用樹脂組成物。
- 前記表面張力Mstは、33.0~40.0mN/mである、請求項1~8のいずれか一つに記載のモデル材用樹脂組成物。
- インクジェット光造形法に用いられ、かつ、請求項1~9のいずれか一つに記載のモデル材用樹脂組成物と、サポート材を造形するために使用されるサポート材用樹脂組成物とを組み合わせてなる光造形用インクセットであって、
前記サポート材用樹脂組成物は、(E)水溶性単官能エチレン性不飽和単量体と、(F)オキシエチレン基および/またはオキシプロピレン基を含むポリアルキレングリコールと、(B)光重合開始剤と、(C)表面調整剤と、を含有する、光造形用インクセット。 - 前記(E)成分の含有量は、前記サポート材用樹脂組成物全体100重量部に対して、20~50重量部である、請求項10に記載の光造形用インクセット。
- 前記(F)成分の含有量は、前記サポート材用樹脂組成物全体100重量部に対して、20~49重量部である、請求項10または11に記載の光造形用インクセット。
- 前記(F)成分の数平均分子量Mnは、100~5,000である、請求項10~12のいずれか一つに記載の光造形用インクセット。
- 前記サポート材用樹脂組成物の表面張力Stは、24.0~33.0mN/mである、請求項10~13のいずれか一つに記載の光造形用インクセット。
- インクジェット光造形法により、請求項10~14のいずれか一つに記載の光造形用インクセットを用いて光造形品を製造する方法であって、
モデル材用樹脂組成物からなる層とサポート材用樹脂組成物からなる層とが隣接して配置された樹脂組成物層が形成されるように、インクジェットヘッドから前記モデル材用樹脂組成物および前記サポート材用樹脂組成物を吐出させる工程(I)と、
前記樹脂組成物層を構成するモデル材用樹脂組成物およびサポート材用樹脂組成物をそれぞれ光硬化させることにより、モデル材およびサポート材を得る工程(II)と、
前記サポート材を除去することにより、光造形品を得る工程(III)と、
を有する、光造形品の製造方法。
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JP7429783B2 (ja) | 2020-07-07 | 2024-02-08 | 三井化学株式会社 | 光硬化性組成物、立体造形物、及び歯科用製品 |
JPWO2022009880A1 (ja) * | 2020-07-07 | 2022-01-13 | ||
WO2022009880A1 (ja) * | 2020-07-07 | 2022-01-13 | 三井化学株式会社 | 光硬化性組成物、立体造形物、及び歯科用製品 |
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CN108025486B (zh) | 2021-05-04 |
JP6751096B2 (ja) | 2020-09-02 |
EP3351367A4 (en) | 2019-05-22 |
US11795335B2 (en) | 2023-10-24 |
EP3351367A1 (en) | 2018-07-25 |
US20180258297A1 (en) | 2018-09-13 |
CN108025486A (zh) | 2018-05-11 |
US20220213335A1 (en) | 2022-07-07 |
EP3351367B1 (en) | 2022-06-15 |
JPWO2017047693A1 (ja) | 2018-06-28 |
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