KR102568091B1 - 3d 프린트용 아크릴-폴리우레탄 화합물 및 이를 포함하는 uv 경화액 조성물 - Google Patents
3d 프린트용 아크릴-폴리우레탄 화합물 및 이를 포함하는 uv 경화액 조성물 Download PDFInfo
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- KR102568091B1 KR102568091B1 KR1020200106921A KR20200106921A KR102568091B1 KR 102568091 B1 KR102568091 B1 KR 102568091B1 KR 1020200106921 A KR1020200106921 A KR 1020200106921A KR 20200106921 A KR20200106921 A KR 20200106921A KR 102568091 B1 KR102568091 B1 KR 102568091B1
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- 239000004814 polyurethane Substances 0.000 title claims abstract description 39
- 238000003848 UV Light-Curing Methods 0.000 title claims abstract description 35
- 150000001875 compounds Chemical class 0.000 title claims abstract description 32
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 31
- 239000000203 mixture Substances 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 238000010146 3D printing Methods 0.000 title claims abstract description 12
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 20
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 19
- 229920005862 polyol Polymers 0.000 claims abstract description 13
- 150000003077 polyols Chemical class 0.000 claims abstract description 13
- 239000004970 Chain extender Substances 0.000 claims abstract description 12
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 22
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 18
- -1 Poly(tetramethylene ether) Polymers 0.000 claims description 14
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 14
- 238000001723 curing Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000012948 isocyanate Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000010907 mechanical stirring Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000002834 transmittance Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000000862 absorption spectrum Methods 0.000 claims description 3
- 238000007639 printing Methods 0.000 claims description 2
- BJZYYSAMLOBSDY-QMMMGPOBSA-N (2s)-2-butoxybutan-1-ol Chemical compound CCCCO[C@@H](CC)CO BJZYYSAMLOBSDY-QMMMGPOBSA-N 0.000 claims 4
- ZVYPNSGWLVPWSF-UHFFFAOYSA-N 4,6-dichloro-1-benzofuran Chemical compound ClC1=CC(Cl)=C2C=COC2=C1 ZVYPNSGWLVPWSF-UHFFFAOYSA-N 0.000 claims 3
- 125000003158 alcohol group Chemical group 0.000 claims 3
- 150000002513 isocyanates Chemical class 0.000 claims 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims 1
- 238000000016 photochemical curing Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004904 shortening Methods 0.000 abstract description 3
- 239000000178 monomer Substances 0.000 description 16
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 12
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 10
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 9
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 8
- 238000005227 gel permeation chromatography Methods 0.000 description 8
- 125000004386 diacrylate group Chemical group 0.000 description 7
- VFHVQBAGLAREND-UHFFFAOYSA-N diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 VFHVQBAGLAREND-UHFFFAOYSA-N 0.000 description 6
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 6
- 239000002202 Polyethylene glycol Substances 0.000 description 5
- 229920001223 polyethylene glycol Polymers 0.000 description 5
- JVYDLYGCSIHCMR-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)butanoic acid Chemical compound CCC(CO)(CO)C(O)=O JVYDLYGCSIHCMR-UHFFFAOYSA-N 0.000 description 4
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 4
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000011342 resin composition Substances 0.000 description 4
- 238000004626 scanning electron microscopy Methods 0.000 description 4
- 238000005211 surface analysis Methods 0.000 description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 4
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 4
- KLDXJTOLSGUMSJ-JGWLITMVSA-N Isosorbide Chemical compound O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 KLDXJTOLSGUMSJ-JGWLITMVSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 229960002479 isosorbide Drugs 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 description 2
- HWSSEYVMGDIFMH-UHFFFAOYSA-N 2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOC(=O)C(C)=C HWSSEYVMGDIFMH-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 2
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 2
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 2
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 description 2
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010835 comparative analysis Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- FSDNTQSJGHSJBG-UHFFFAOYSA-N piperidine-4-carbonitrile Chemical compound N#CC1CCNCC1 FSDNTQSJGHSJBG-UHFFFAOYSA-N 0.000 description 2
- 239000004632 polycaprolactone Substances 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LJRSZGKUUZPHEB-UHFFFAOYSA-N 2-[2-(2-prop-2-enoyloxypropoxy)propoxy]propyl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COC(C)COC(=O)C=C LJRSZGKUUZPHEB-UHFFFAOYSA-N 0.000 description 1
- LWRBVKNFOYUCNP-UHFFFAOYSA-N 2-methyl-1-(4-methylsulfanylphenyl)-2-morpholin-4-ylpropan-1-one Chemical compound C1=CC(SC)=CC=C1C(=O)C(C)(C)N1CCOCC1 LWRBVKNFOYUCNP-UHFFFAOYSA-N 0.000 description 1
- SAPGBCWOQLHKKZ-UHFFFAOYSA-N 6-(2-methylprop-2-enoyloxy)hexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCCCCOC(=O)C(C)=C SAPGBCWOQLHKKZ-UHFFFAOYSA-N 0.000 description 1
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 102100026735 Coagulation factor VIII Human genes 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 101000911390 Homo sapiens Coagulation factor VIII Proteins 0.000 description 1
- GUCYFKSBFREPBC-UHFFFAOYSA-N [phenyl-(2,4,6-trimethylbenzoyl)phosphoryl]-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=C(C)C=C(C)C=C1C GUCYFKSBFREPBC-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000013365 molecular weight analysis method Methods 0.000 description 1
- ZDHCZVWCTKTBRY-UHFFFAOYSA-N omega-Hydroxydodecanoic acid Natural products OCCCCCCCCCCCC(O)=O ZDHCZVWCTKTBRY-UHFFFAOYSA-N 0.000 description 1
- 229920000671 polyethylene glycol diacrylate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6625—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/34
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
- C08G18/4269—Lactones
- C08G18/4277—Caprolactone and/or substituted caprolactone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Description
도 2는 본 발명의 일실시예에 따른 Acryl-PU의 FTIR (Fourier-transform infrared spectroscopy) 분석 결과를 나타낸 것이다.
도 3은 본 발명의 일실시예에 따른 UV 경화액 조성물을 이용한 3D 프린팅 출력물의 UTM (Universal Test Machine) 분석 결과를 나타낸 것이다.
도 4는 본 발명의 일실시예에 따른 UV 경화액 조성물을 이용한 3D 프린팅 출력물의 이미지를 나타낸 것이다.
도 5는 본 발명의 일실시예에 따른 UV 경화액 조성물을 이용한 3D 프린팅 출력물의 표면 분석 (SEM, Scanning electron microscopy)한 결과를 나타낸 것이다.
도 6은 본 발명의 일실시예에 따른 Acryl-PU의 GPC (Gel Permeation Chromatography) 분석 결과를 나타낸 것이다.
도 7은 본 발명의 일실시예에 따른 Acryl-PU의 C=C bond (1620 cm-1) peak를 비교 분석한 결과를 나타낸 것이다.
도 8은 본 발명의 일실시예에 따른 Acryl-PU의 UV 경화 전후에 따른 UV-Transmittance 측정 결과를 나타낸 것이다.
도 9는 본 발명의 일실시예에 따른 Acryl-PU의 UV 경화 전후에 따른 UTM 측정 결과를 나타낸 것이다.
도 10은 본 발명의 일실시예에 따른 UV 경화액 조성물을 이용한 3D 프린팅 출력물의 표면 분석 (SEM, Scanning electron microscopy)한 결과를 나타낸 것이다.
Property | Mn | Mw | PDI |
Acryl-PU | 212203 | 34066 | 1.61 |
Peak appearance | NCO peak 2275 cm-1 | Urethan peak 1725 cm-1 | C=O (ester) 1732 cm-1 | C-N (esteramidde) 1611 cm-1 |
HDI | O | X | X | X |
Pre-polymer | X | O | O | O |
Acryl-PU | X | O | O | O |
Property | Maximum Stress (Mpa) | Percent Strain (%) |
Acryl-PU+2.5 acryl monomer | 4.5358 | 23.457 |
Acryl-PU+3.0 acryl monomer | 4.7933 | 25.752 |
Ref.(Acryl monomer) | 3.4150 | 8.9347 |
Sample | Ref | Acryl-PU+2.5 acryl | Acryl-PU+3.0acryl |
Shore | 90 | 89.7 | 89.5 |
기본 노광 시간 (Sec) | 30 | 15 | 10 | 5 | 4.5 | 4 | 3 |
초기 노광 시간 (Sec) | 60 | 30 | 15 | 10 | 5 | 5 | 5 |
출력 | Bad | Not bad | Good | Good | Not bad | Bad | Very Bad |
Property | Mn | Mw | PDI |
Acryl-PU | 10200 | 27320 | 2.68 |
Claims (9)
- 삭제
- 폴리올로서 PTMG (Poly(tetramethylene ether) glycol)과 가교제로서 메틸렌디페닐디이소시아네이트(MDI, Methylene diphenyl diisocyanate), 사슬연장제로 1,4-BD(1,4-Butanediol), 추가 가교제로 디페닐메탄 디이소시아네이트(Diphenylmethane diisocyanate; MDI), 및 아크릴레이트로 PETA(Pentaerythritol triacrylate)로부터 유래한 구조를 가지는 아크릴-폴리우레탄(Acryl-Polyurethane, Acryl-PU) 화합물로서,
상기 아크릴-폴리우레탄 화합물은 상기 PTMG의 알콜기(-OH)와 메틸렌디페닐 디이소시아네이트의 이소시아네이트(-NCO)의 반응으로 형성된 우레탄 결합을 포함하는 프리폴리머 화합물을 형성하고, 여기에 사슬연장제인 1,4-부탄디올과 추가 가교제인 메틸렌디페닐 디이소시아네이트를 첨가하여 추가적인 세그먼트(segment)를 형성함으로써 사슬을 연장시키고, 여기에 아크릴레이트로서 알콜기(-OH)를 포함하는 PETA(Pentaerythritol triacrylate)를 첨가하여 상기 우레탄 결합을 포함하는 프리폴리머 화합물에 포함된 이소시아네이트(-NCO)와 상기 PETA의 알콜기의 반응으로 추가 우레탄 결합을 형성하여 이루어진 것을 특징으로 하는 아크릴-폴리우레탄(Acryl-Polyurethane, Acryl-PU) 화합물.
- 삭제
- 제2항에 있어서,
상기 아크릴-폴리우레탄(Acryl-Polyurethane, Acryl-PU) 화합물은 중량평균분자량(Mw)이 3,000 내지 100,000인 것을 특징으로 하는 아크릴-폴리우레탄(Acryl-Polyurethane, Acryl-PU) 화합물.
- 삭제
- 제2항에 따른 아크릴-폴리우레탄(Acryl-Polyurethane, Acryl-PU) 화합물 100중량부에 대하여 UV 흡수 스펙트럼 구간인 250~450nm에서 흡수 파장대를 갖는 성분을 포함하는 광개시제 1 내지 60 중량부를 포함하는 3D 프린팅용 UV 경화액 조성물로서,
상기 3D 프린팅용 UV 경화액 조성물은 UV 경화 후 550 nm 이상의 파장에서 투과율이 90% 이상의 값을 나타내며,
UV 경화 후 기계적 강도는 경화 전에 비해 stress 는 19%, strain은 6% 증가된 값을 가지는 것을 특징으로 하는 3D 프린팅용 UV 경화액 조성물.
- 폴리올로서 PTMG (Poly(tetramethylene ether) glycol)에 가교제인 메틸렌디페닐디이소시아네이트(MDI, Methylene diphenyl diisocyanate)를 투입하고 50 내지 60 ℃로 가열하고 교반하면서 100 내지 150 분 동안 유지한 후 사슬 연장제인 1,4-BD(1,4-Butanediol) 및 추가 가교제로서 메틸렌디페닐디이소시아네이트(MDI, Methylene diphenyl diisocyanate)를 투입한 후 50 내지 60 ℃에서 기계적 교반하고 50 내지 80분 동안 유지한 다음, 55 내지 65 ℃에서 아크릴레이트인 PETA(Pentaerythritol triacrylate)를 투입한 후 150 내지 200 분 동안 유지하는 과정을 포함하는 아크릴-폴리우레탄(Acryl-Polyurethane, Acryl-PU) 화합물의 제조방법으로,
상기 가교제인 메틸렌디페닐디이소시아네이트(MDI, Methylene diphenyl diisocyanate)는 폴리올인 PTMG (Poly(tetramethylene ether) glycol)과의 반응시 폴리올에 대하여 1:1.14의 몰비율로 포함되고,
추가 가교제로 투입되는 경우에는 폴리올인 PTMG (Poly(tetramethylene ether) glycol)에 대하여 1:0.42의 몰비율로 순차적으로 투입되는 것을 특징으로 하는 제2항에 따른 아크릴-폴리우레탄(Acryl-Polyurethane, Acryl-PU) 화합물의 제조방법.
- 삭제
- 삭제
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