WO2023120091A1 - シートモールディングコンパウンド及びその製造方法 - Google Patents
シートモールディングコンパウンド及びその製造方法 Download PDFInfo
- Publication number
- WO2023120091A1 WO2023120091A1 PCT/JP2022/044318 JP2022044318W WO2023120091A1 WO 2023120091 A1 WO2023120091 A1 WO 2023120091A1 JP 2022044318 W JP2022044318 W JP 2022044318W WO 2023120091 A1 WO2023120091 A1 WO 2023120091A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reinforcing fibers
- resin
- molding compound
- smc
- sheet molding
- Prior art date
Links
- 239000003677 Sheet moulding compound Substances 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title abstract description 10
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 41
- 239000011342 resin composition Substances 0.000 claims abstract description 16
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 18
- 239000004917 carbon fiber Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 abstract description 33
- 239000011347 resin Substances 0.000 abstract description 33
- 238000000748 compression moulding Methods 0.000 abstract description 7
- 239000000835 fiber Substances 0.000 description 33
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 238000000465 moulding Methods 0.000 description 12
- 239000000843 powder Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000003822 epoxy resin Substances 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 7
- 229920000647 polyepoxide Polymers 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 229920001567 vinyl ester resin Polymers 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 4
- 239000012778 molding material Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- -1 and the like Substances 0.000 description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 239000002562 thickening agent Substances 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 description 2
- FVCSARBUZVPSQF-UHFFFAOYSA-N 5-(2,4-dioxooxolan-3-yl)-7-methyl-3a,4,5,7a-tetrahydro-2-benzofuran-1,3-dione Chemical compound C1C(C(OC2=O)=O)C2C(C)=CC1C1C(=O)COC1=O FVCSARBUZVPSQF-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- QXYJCZRRLLQGCR-UHFFFAOYSA-N dioxomolybdenum Chemical compound O=[Mo]=O QXYJCZRRLLQGCR-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- HNPDNOZNULJJDL-UHFFFAOYSA-N ethyl n-ethenylcarbamate Chemical compound CCOC(=O)NC=C HNPDNOZNULJJDL-UHFFFAOYSA-N 0.000 description 2
- 150000002222 fluorine compounds Chemical class 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 150000002484 inorganic compounds Chemical class 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 235000019809 paraffin wax Nutrition 0.000 description 2
- 235000019271 petrolatum Nutrition 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920002101 Chitin Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- BGNXCDMCOKJUMV-UHFFFAOYSA-N Tert-Butylhydroquinone Chemical compound CC(C)(C)C1=CC(O)=CC=C1O BGNXCDMCOKJUMV-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000012963 UV stabilizer Substances 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 239000012345 acetylating agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 229910001864 baryta Inorganic materials 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920006241 epoxy vinyl ester resin Polymers 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 235000021588 free fatty acids Nutrition 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
- B29C70/14—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat oriented
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
Definitions
- the present invention relates to a sheet molding compound and its manufacturing method.
- thermosetting resin reinforced with reinforcing fibers is used in many fields such as industrial parts, housing parts, and automobile parts.
- fiber-reinforced resin composite materials in which thermosetting resins such as epoxy resins and unsaturated polyester resins are reinforced with carbon fiber as the reinforcing fiber, are attracting attention for their excellent heat resistance and mechanical strength while being lightweight. Its use in the body is expanding.
- discontinuous fibers are used as reinforcing fibers, the applicable range of molding shapes is wider than that of continuous fibers, remnants can be reused, and different material parts can be inserted. Therefore, sheet molding compounds (hereinafter sometimes abbreviated as "SMC”) are widely used (see, for example, Patent Document 1).
- One of the molding methods for the above SMC is heat compression molding.
- the molding material is shaped in a mold at 110 to 180° C. under a pressure of 1 to 20 MPa, and these molding conditions are maintained for a predetermined time.
- the reinforcing fibers used in the SMC are dispersed so as to be randomly oriented, and the reinforcing fibers are generally isotropic, and the reinforcing fibers at the ends of the SMC are also isotropic.
- the problem to be solved by the present invention is to provide a sheet molding compound that is capable of controlling the resin fluidity at the edges during compression molding and has excellent stretchability, and a method for producing the same.
- the present inventors have found that a sheet molding compound in which reinforcing fibers are specifically oriented can solve the above problems, and have completed the present invention.
- a sheet molding compound in which reinforcing fibers are impregnated with a resin composition, and the ratio (X1) of reinforcing fibers oriented at 30 ° or less among the reinforcing fibers contained in the portion (A1) within 20 mm from the end is between 28 and 90%.
- the sheet molding compound obtained from the present invention and its molded product are excellent in carbon fiber impregnating properties, etc., and are therefore used for automobile members, railway vehicle members, aerospace aircraft members, ship members, housing equipment members, sports members, and light vehicle members. , architectural and civil engineering members, exteriors and structures of OA equipment, and the like.
- the sheet molding compound of the present invention is a sheet molding compound in which reinforcing fibers are impregnated with a resin composition, and the reinforcing fibers contained in the portion (A1) within 20 mm from the end thereof are reinforced with an orientation of 30 ° or less.
- the fiber ratio (X1) is from 28 to 90%. Due to this specific orientation, a sheet molding compound can be obtained which has an excellent balance of resin fluidity and stretchability that cannot be obtained with isotropy.
- the ratio of reinforcing fibers in the present invention is the ratio of the number of fiber bundles.
- the orientation of SMC fibers is 0° in the direction parallel to the MD direction (manufacturing flow direction of SMC) and 90° in the direction perpendicular to it. If the fiber is tilted 30° to the right or 30° to the left, the value is 30°. If the fiber is bent, the line connecting both ends of the fiber is regarded as the fiber direction and measured. shall be
- the end of the SMC is the part where both the resin and the reinforcing fiber are present, and refers to the outermost part.
- the portion (A1) within 20 mm from the end refers to a region from the end to 20 mm in a direction perpendicular to the MD direction, and the portion (A2) exceeding 20 mm from the end is the portion (A1) Refers to areas other than
- the ratio (X1) of the reinforcing fibers oriented at 30° or less in the reinforcing fibers contained in the portion (A1) is preferably 30 to 88% because the balance between resin fluidity and stretchability is further improved. ⁇ 86% is more preferred, and 40-80% is even more preferred.
- the ratio (X2) of the reinforcing fibers oriented at 30° or less among the reinforcing fibers contained in the portion (A2) is preferably 25 to 40% because the fibers after molding are preferably isotropic. .
- the ratio (X1) of the reinforcing fibers is obtained by selecting 50 measurement points (20 mm ⁇ 50 mm) on each side of the area of the portion (A1), and measuring the angle of each fiber bundle in the range with a protractor. It shall be calculated by It should be noted that the fiber bundle even partially contained in the area of the portion (A1) is also measured.
- the ratio (X2) of the reinforcing fibers is obtained by selecting 50 measurement points (20 mm ⁇ 50 mm) from the region of the portion (A2) and measuring the angle of each fiber bundle in the range with a protractor. shall be calculated.
- the resin composition is applied to carrier films placed on the top and bottom so as to have a uniform thickness (application step), and reinforcing fibers are applied to one of the resin composition-applied surfaces.
- Sprinkle (adding step) sandwich the resin composition on the carrier film installed above and below, then pass the whole between impregnation rolls and apply pressure to impregnate the reinforcing fiber with the resin composition (impregnation process), rolling up into a roll, or folding into a zigzag fold.
- the orientation of the fibers at the ends of the SMC of the present invention can be controlled in the adding step, for example, by blowing compressed air from both ends immediately before the carbon fibers are evenly dropped from the air so as to have a uniform thickness. .
- the fiber orientation in the MD direction can be increased by increasing the number of compressed air outlets (narrow pitch) and increasing the compressed air pressure.
- the fiber orientation in the MD direction can be lowered by reducing the number of compressed air outlets and lowering the compressed air pressure.
- orientation of the fibers can also be controlled by a method of applying air in a certain direction during (before) dropping onto the resin on the carrier film, a method of hitting the carbon fibers against a plate or the like during dropping, or the like.
- resins in the resin composition used in the SMC of the present invention include thermosetting resins such as epoxy resins, vinyl ester resins, vinyl urethane resins, unsaturated polyester resins, phenol resins, melamine resins, and furan resins.
- thermosetting resins such as epoxy resins, vinyl ester resins, vinyl urethane resins, unsaturated polyester resins, phenol resins, melamine resins, and furan resins.
- epoxy resin, vinyl ester resin and vinyl urethane resin are more preferable.
- These resins can be used alone or in combination of two or more.
- the viscosity of the resin composition is the viscosity ratio (V 30 / V 20 ) is preferably between 0.5 and 0.9.
- the resin composition contains, as components other than the resin, for example, a diluent, a curing agent, a curing accelerator, a polymerization inhibitor, a filler, a low shrinkage agent, thermoplastic resin particles, a release agent, a thickener, Viscosity reducing agents, pigments, antioxidants, plasticizers, flame retardants, antibacterial agents, UV stabilizers, storage stabilizers, reinforcing agents, photocuring agents and the like can be contained.
- a diluent for example, a diluent, a curing agent, a curing accelerator, a polymerization inhibitor, a filler, a low shrinkage agent, thermoplastic resin particles, a release agent, a thickener, Viscosity reducing agents, pigments, antioxidants, plasticizers, flame retardants, antibacterial agents, UV stabilizers, storage stabilizers, reinforcing agents, photocuring agents and the like can be contained.
- the fillers include inorganic compounds and organic compounds, which can be used to adjust physical properties such as strength, elastic modulus, impact strength, and fatigue durability of molded products.
- Examples of the inorganic compound include calcium carbonate, magnesium carbonate, barium sulfate, mica, talc, kaolin, clay, celite, asbestos, barite, baryta, silica, silica sand, dolomite limestone, gypsum, aluminum fine powder, hollow balloons, Alumina, glass powder, aluminum hydroxide, cold water stone, zirconium oxide, antimony trioxide, titanium oxide, molybdenum dioxide, iron powder and the like.
- Examples of the organic compound include powders of natural polysaccharides such as cellulose and chitin, powders of synthetic resins, and the like, and powders of synthetic resins include hard resins, soft rubbers, elastomers, polymers (copolymers), and the like. Particles having a multi-layered structure such as organic powders and core-shell type particles can be used. Specific examples include particles of butadiene rubber and/or acrylic rubber, urethane rubber, silicon rubber, polyimide resin powder, fluororesin powder, phenol resin powder, and the like. These fillers can be used alone or in combination of two or more.
- release agent examples include zinc stearate, calcium stearate, paraffin wax, polyethylene wax, carnauba wax, and fluorine compounds. Fluorine compounds and paraffin waxes are preferred. These release agents can be used alone or in combination of two or more.
- thickener examples include metal oxides and metal hydroxides such as magnesium oxide, magnesium hydroxide, calcium oxide and calcium hydroxide, acrylic resin fine particles, and the like, and the fiber-reinforced molding material of the present invention. It can be selected as appropriate depending on the handling property. These thickeners can be used alone or in combination of two or more.
- the resin composition is obtained by mixing and dispersing each of the above components using a mixer such as an ordinary mixer, intermixer, planetary mixer, roll mill, kneader, or extruder.
- a mixer such as an ordinary mixer, intermixer, planetary mixer, roll mill, kneader, or extruder.
- the reinforcing fibers used in the SMC of the present invention are fibers cut to a length of 2.5 to 50 mm. Therefore, fibers cut to 5 to 40 mm are more preferred.
- the fiber reinforcing material examples include glass fiber, carbon fiber, silicon carbide fiber, pulp, hemp, cotton, nylon, polyester, acrylic, polyurethane, polyimide, or polyamide fiber made of aramid such as Kevlar and Nomex. be done.
- carbon fiber is preferable because a molded product with high strength can be obtained.
- carbon fibers such as polyacrylonitrile-based, pitch-based, and rayon-based carbon fibers can be used.
- polyacrylonitrile-based carbon fibers are preferable because high-strength carbon fibers can be easily obtained.
- the number of filaments in the fiber bundle used as the carbon fiber is preferably 1,000 to 60,000 because the resin impregnation property and the mechanical properties of the molded product are further improved.
- the content of the fiber reinforcing material in the SMC component of the present invention is preferably in the range of 25 to 80% by mass, and more preferably in the range of 40 to 70% by mass, because the mechanical properties of the resulting molded product are further improved. is more preferred, and 45 to 65% by mass is particularly preferred. If the fiber content is too low, it may not be possible to obtain a high-strength molded product. A strong molded product may not be obtained.
- the molded article of the present invention can be obtained by molding the SMC, but the molding method is preferably heat compression molding from the viewpoint of excellent productivity and design diversity.
- a predetermined amount of the SMC is weighed, put into a mold preheated to 110 to 180° C., the mold is clamped with a compression molding machine, and the molding material is shaped.
- a manufacturing method is used in which the molding material is cured by maintaining a molding pressure of 1 to 30 MPa, and then the molded article is removed to obtain the molded article.
- a mold temperature of 120 to 160 ° C. in the mold and a molding pressure of 1 to 20 MPa for 1 to 5 minutes per 1 mm of the thickness of the molded product are preferable.
- the molding conditions are more preferably a mold temperature of 140 to 160° C. and a molding pressure of 1 to 20 MPa for 1 to 3 minutes per 1 mm of the thickness of the molded product.
- the SMC of the present invention is excellent in productivity, moldability, etc., and the resulting molded articles include automobile members, railway vehicle members, aerospace aircraft members, ship members, housing equipment members, sports members, light vehicle members, and construction and civil engineering members. , OA equipment and the like.
- the hydroxyl value is the amount of potassium hydroxide required to neutralize the acetic acid generated when 1 g of a resin sample is reacted at a specified temperature and time using an acetylating agent based on the specified method of JIS K-0070. Milligrams (mgKOH/g) were measured. The acid value was obtained by measuring the number of milligrams (mgKOH/g) of potassium hydroxide required to neutralize the free fatty acid, resin acid, etc. contained in 1 g of the resin sample based on the method specified in JIS K-0070. .
- Preparation Example 1 Preparation of resin composition (1)
- Polyisocyanate manufactured by Mitsui Chemicals SKC Polyurethane Co., Ltd. " Cosmonate LL", aromatic polyisocyanate
- polymerization initiator manufactured by Kayaku Akzo Co., Ltd. "Kayacarbon AIC-75", organic peroxide
- polymerization inhibitor 0.035 parts by mass of parabenzoquinone (hereinafter abbreviated as polymerization inhibitor (1)) was mixed to obtain a resin composition (1).
- Example 1 Production and evaluation of SMC (1)
- the resin composition (1) obtained above was applied to a polyethylene-polypropylene laminate film in an average coating amount of 860 g/m 2 , and a carbon fiber roving (T700SC-12000 manufactured by Toray Industries, Inc.) -50C”) was cut to 12.5 mm (hereinafter abbreviated as carbon fiber (1)).
- the carbon fiber (1) was similarly impregnated with the resin by sandwiching it with a film coated with the resin composition (1), and then allowed to stand at 25 ⁇ 5 ° C. for 4 hours to obtain SMC (1).
- the basis weight of this SMC was 2 kg/m 2 .
- the pressure of the compressed air was adjusted by a regulator attached to each compressed air outlet (inner diameter: 4 mm, length: 80 mm).
- Compressed air outlets were arranged at a pitch of 200 mm with respect to the flow direction at a width direction of 1000 mm and a flow direction of 1200 mm in the carbon fiber falling area of the cutting device. Note that the pitch means the distance between the centers of the cross sections of the discharge ports.
- the center of the cross section of the ejection port was set at a height of 3 mm from the carrier film.
- Example 2 to 6 Production and evaluation of SMC (2) to (7)
- SMC (2) to (7) After obtaining SMC (2) to (7) in the same manner as in Example 1 except that the fiber addition conditions in Table 1 were used, each evaluation was performed.
- Outflow of only resin at the end of SMC molded product is less than 5 mm ⁇ : Outflow of only resin at the end of SMC molded product is 5 mm or more and less than 10 mm ⁇ : Outflow of only resin at the end of SMC molded product is 10 mm or more
- ⁇ 100% of the occupied area in the mold of the SMC molded product ⁇ : 95% or more and less than 100% of the occupied area in the mold of the SMC molded product ⁇ : Less than 95% of the occupied area in the mold of the SMC molded product
- Comparative Example 3 is an example in which the ratio (X) of reinforcing fibers oriented at 30° or less among the reinforcing fibers contained in the portion within 20 mm from the end is higher than the upper limit of the present invention, 90%. It was confirmed that the extensibility was insufficient.
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Abstract
Description
温度計、窒素導入管、撹拌機を設けた2Lフラスコに、エポキシ樹脂(DIC株式会社製「エピクロン850」、ビスフェノールA型エポキシ樹脂、エポキシ当量 188) 677質量部、メタクリル酸 310質量部、及びt-ブチルハイドロキノン 0.29質量部を仕込み、窒素と空気とを1対1で混合したガス流通下で、90℃まで昇温した。ここに2-メチルイミダゾール 0.60質量部を入れ、110℃に昇温して10時間反応させると、酸価が6以下になったので、反応を終了した。60℃付近まで冷却した後、反応容器より取り出し、水酸基価217mgKOH/gのビニルエステル樹脂(1)を得た。
温度計、窒素導入管、撹拌機を設けた2Lフラスコに、エポキシ樹脂(DIC株式会社製「エピクロン850」、ビスフェノールA型エポキシ樹脂、エポキシ当量188)656質量部、ビスフェノールA 147質量部、及び2-メチルイミダゾール0.4質量部を仕込み、120℃に昇温して3時間反応させ、エポキシ当量を測定した。エポキシ当量が設定通り365になったことを確認後、60℃付近まで冷却した後、メタクリル酸185質量部、及びt-ブチルハイドロキノン0.29質量部を仕込み、窒素と空気とを1対1で混合したガス流通下で、90℃まで昇温した。ここに2-メチルイミダゾール0.18質量部を入れ、110℃に昇温して10時間反応させると、酸価が6以下になったので、反応を終了した。60℃付近まで冷却した後、反応容器より取り出し、水酸基価209mgKOH/gのビニルエステル樹脂(2)を得た。
ビニルエステル樹脂(1)48.1質量部、ビニルエステル樹脂(2)11.9質量部をフェノキシエチルメタクリレート40.0質量部に溶解させた樹脂溶液に、ポリイソシアネート(三井化学SKCポリウレタン社製「コスモネートLL」、芳香族ポリイソシアネート)22.0質量部、及び重合開始剤(化薬アクゾ株式会社製「カヤカルボンAIC-75」、有機過酸化物)1.2質量部、及び重合禁止剤(パラベンゾキノン;以下、重合禁止剤(1)と略記する。)0.035質量部を混合し、樹脂組成物(1)を得た。
上記で得た樹脂組成物(1)を、ポリエチレンとポリプロピレンのラミネートフィルム上に塗布量が平均860g/m2となるよう塗布し、この上に、炭素繊維ロービング(東レ株式会社製「T700SC-12000-50C」)を12.5mmにカットした炭素繊維(以下、炭素繊維(1)と略記する。)を炭素繊維含有率が55質量%になるように、表1に記載の所定の条件で空中から落下させ、同様に樹脂組成物(1)を塗布したフィルムで挟み込み炭素繊維(1)に樹脂を含浸させた後、25±5℃中に4時間静置し、SMC(1)を得た。このSMCの目付け量は、2kg/m2であった。
圧縮空気の圧力は、各圧縮空気吐出口(内部直径4mm、長さ80mm)毎に取り付けたレギュレーターにて調整した。切断装置の炭素繊維落下領域幅方向1000mm、流れ方向1200mmにおいて、流れ方向に対して、200mmのピッチにて、圧縮空気吐出口を配設した。なお、ピッチとは、吐出口断面の中心間の距離のことを示す。吐出口断面の中心は、キャリアフィルムから3mmの高さとした。
表1の繊維添加条件とした以外は実施例1と同様にして、SMC(2)~(7)を得た後、各評価を行った。
表2の繊維添加条件とした以外は実施例1と同様にして、SMC(R1)~(R4)を得た後、各評価を行った。
上記で得たSMCの端部から20mmの範囲において、左右各50の測定箇所(20mm×50mm)を選定し、その範囲内にある繊維束を1束ずつ分度器にて角度を計測した。なお、範囲内に一部でも入っている繊維束についても計測した。測定した繊維束全数中の30°以下の繊維配向の割合を算出して、30°以下の配向繊維割合とした。
上記で得たSMC(1)のシート端部に接する100mm×100mmの領域3つを任意に選定して、カットし、フィルムから剥離したものを3枚重ね、30cm×30cmの平板金型(金型クリアランス2.5mm)の中央部にセットし、プレス金型温度150℃、プレス時間5分間、プレス圧力12MPaで成形し、成形品の強化繊維より分離し、樹脂のみが流出した部分の長さの最大値を測定し、下記の基準により、樹脂流動性を評価した。
○:SMC成形品端部における樹脂のみの流出が5mm未満
△:SMC成形品端部における樹脂のみの流出が5mm以上10mm未満
×:SMC成形品端部における樹脂のみの流出が10mm以上
上記で得たSMC(1)のシート端部に接する100×100mmの領域3つを任意に選定して、カットし、フィルムから剥離したものを3枚重ね、30cm×30cmの平板金型(金型クリアランス2.5mm)の中央部にセットし、プレス金型温度150℃、プレス時間5分間、プレス圧力12MPaで成形した。その際、金型内の表面積(900cm2)に対する成形品が延伸されて金型内に広がった成形品の面積を測定し、下記の基準により、延伸性を評価した。
○:SMC成形品の金型内占有面積100%
△:SMC成形品の金型内占有面積95%以上100%未満
×:SMC成形品の金型内占有面積95%未満
Claims (5)
- 樹脂組成物を強化繊維に含浸したシートモールディングコンパウンドであって、その端部から20mm以内の部分(A1)に含まれる強化繊維中の30°以下の配向となる強化繊維の割合(X1)が、28~90%であることを特徴とするシートモールディングコンパウンド。
- 端部から20mmを超える部分(A2)に含まれる強化繊維中の30°以下の配向となる強化繊維の割合(X2)が、25~40%である請求項1に記載のシートモールディングコンパウンド。
- 前記強化繊維が、炭素繊維である請求項1又は2記載のシートモールディングコンパウンド。
- 前記樹脂組成物を前記強化繊維に含浸する前に、前記強化繊維を配向させる工程を有する請求項1~3いずれか1項記載のシートモールディングコンパウンドの製造方法。
- 請求項1~3いずれか1項記載のシートモールディングコンパウンドを用いた成形品。
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