CN102581216B - Bi-component epoxy resin binder, cast mixture containing bi-component epoxy resin binder, cast molding body and method for casting metal products - Google Patents
Bi-component epoxy resin binder, cast mixture containing bi-component epoxy resin binder, cast molding body and method for casting metal products Download PDFInfo
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- CN102581216B CN102581216B CN201110117019.0A CN201110117019A CN102581216B CN 102581216 B CN102581216 B CN 102581216B CN 201110117019 A CN201110117019 A CN 201110117019A CN 102581216 B CN102581216 B CN 102581216B
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- binding agent
- epoxy resin
- polyurethane prepolymer
- component
- base polyurethane
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- 239000003822 epoxy resin Substances 0.000 title claims abstract description 73
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 73
- 239000011230 binding agent Substances 0.000 title claims abstract description 63
- 239000000203 mixture Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005266 casting Methods 0.000 title claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 7
- 239000002184 metal Substances 0.000 title claims abstract description 7
- 238000000465 moulding Methods 0.000 title abstract 3
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims abstract description 41
- -1 acrylic ester Chemical class 0.000 claims abstract description 25
- 239000003085 diluting agent Substances 0.000 claims abstract description 21
- 150000001451 organic peroxides Chemical class 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000005058 metal casting Methods 0.000 claims abstract description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 49
- 229920001568 phenolic resin Polymers 0.000 claims description 30
- 239000005011 phenolic resin Substances 0.000 claims description 30
- 125000001743 benzylic group Chemical group 0.000 claims description 22
- 238000009835 boiling Methods 0.000 claims description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 14
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 14
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 13
- 238000013019 agitation Methods 0.000 claims description 10
- 150000002148 esters Chemical class 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 10
- 239000005056 polyisocyanate Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 229910000077 silane Inorganic materials 0.000 claims description 8
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 7
- 229920001228 polyisocyanate Polymers 0.000 claims description 7
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 7
- 235000010290 biphenyl Nutrition 0.000 claims description 6
- 239000004305 biphenyl Substances 0.000 claims description 6
- 125000006267 biphenyl group Chemical group 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 6
- 150000002739 metals Chemical class 0.000 claims description 4
- 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 claims description 3
- SIXWIUJQBBANGK-UHFFFAOYSA-N 4-(4-fluorophenyl)-1h-pyrazol-5-amine Chemical compound N1N=CC(C=2C=CC(F)=CC=2)=C1N SIXWIUJQBBANGK-UHFFFAOYSA-N 0.000 claims description 3
- UDSFAEKRVUSQDD-UHFFFAOYSA-N Dimethyl adipate Chemical compound COC(=O)CCCCC(=O)OC UDSFAEKRVUSQDD-UHFFFAOYSA-N 0.000 claims description 3
- MUXOBHXGJLMRAB-UHFFFAOYSA-N Dimethyl succinate Chemical compound COC(=O)CCC(=O)OC MUXOBHXGJLMRAB-UHFFFAOYSA-N 0.000 claims description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 3
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 3
- XTDYIOOONNVFMA-UHFFFAOYSA-N dimethyl pentanedioate Chemical compound COC(=O)CCCC(=O)OC XTDYIOOONNVFMA-UHFFFAOYSA-N 0.000 claims description 3
- 229920006332 epoxy adhesive Polymers 0.000 claims description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- XTJFFFGAUHQWII-UHFFFAOYSA-N Dibutyl adipate Chemical compound CCCCOC(=O)CCCCC(=O)OCCCC XTJFFFGAUHQWII-UHFFFAOYSA-N 0.000 claims description 2
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 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 claims description 2
- 239000003350 kerosene Substances 0.000 claims description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims 2
- 229920000642 polymer Polymers 0.000 abstract description 2
- 238000001308 synthesis method Methods 0.000 abstract 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 30
- 238000002156 mixing Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 13
- 239000004576 sand Substances 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 239000004593 Epoxy Substances 0.000 description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 125000001931 aliphatic group Chemical group 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- GTELLNMUWNJXMQ-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical class OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCC(CO)(CO)CO GTELLNMUWNJXMQ-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 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 4
- 150000002118 epoxides Chemical group 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 150000002432 hydroperoxides Chemical class 0.000 description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 229910052753 mercury Inorganic materials 0.000 description 4
- 239000007800 oxidant agent Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 150000002978 peroxides Chemical class 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229930185605 Bisphenol Natural products 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000011353 cycloaliphatic epoxy resin Substances 0.000 description 3
- AFEQENGXSMURHA-UHFFFAOYSA-N oxiran-2-ylmethanamine Chemical compound NCC1CO1 AFEQENGXSMURHA-UHFFFAOYSA-N 0.000 description 3
- 235000013824 polyphenols Nutrition 0.000 description 3
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 description 2
- PLIKAWJENQZMHA-UHFFFAOYSA-N 4-aminophenol Chemical compound NC1=CC=C(O)C=C1 PLIKAWJENQZMHA-UHFFFAOYSA-N 0.000 description 2
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 235000019484 Rapeseed oil Nutrition 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000004844 aliphatic epoxy resin Substances 0.000 description 2
- 239000003849 aromatic solvent Substances 0.000 description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 2
- 229940106691 bisphenol a Drugs 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- YQHLDYVWEZKEOX-UHFFFAOYSA-N cumene hydroperoxide Chemical compound OOC(C)(C)C1=CC=CC=C1 YQHLDYVWEZKEOX-UHFFFAOYSA-N 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- MGWAVDBGNNKXQV-UHFFFAOYSA-N diisobutyl phthalate Chemical compound CC(C)COC(=O)C1=CC=CC=C1C(=O)OCC(C)C MGWAVDBGNNKXQV-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000007528 sand casting Methods 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- 239000008158 vegetable oil Substances 0.000 description 2
- QWUWMCYKGHVNAV-UHFFFAOYSA-N 1,2-dihydrostilbene Chemical group C=1C=CC=CC=1CCC1=CC=CC=C1 QWUWMCYKGHVNAV-UHFFFAOYSA-N 0.000 description 1
- IVSZLXZYQVIEFR-UHFFFAOYSA-N 1,3-Dimethylbenzene Natural products CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 1
- 102100025222 CD63 antigen Human genes 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- CTKINSOISVBQLD-UHFFFAOYSA-N Glycidol Chemical compound OCC1CO1 CTKINSOISVBQLD-UHFFFAOYSA-N 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 101000934368 Homo sapiens CD63 antigen Proteins 0.000 description 1
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical class CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 235000019483 Peanut oil Nutrition 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical class CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 235000019486 Sunflower oil Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 1
- 239000004842 bisphenol F epoxy resin Substances 0.000 description 1
- 235000013844 butane Nutrition 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- AVKNGPAMCBSNSO-UHFFFAOYSA-N cyclohexylmethanamine Chemical class NCC1CCCCC1 AVKNGPAMCBSNSO-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 125000004386 diacrylate group Chemical group 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical group CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical class CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 239000004843 novolac epoxy resin Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003346 palm kernel oil Substances 0.000 description 1
- 235000019865 palm kernel oil Nutrition 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- 239000002383 tung oil Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a bi-component epoxy resin binder, which mainly comprises the following components in parts by weight: 40-80 parts of epoxy resin (a), 1-30 parts of polyurethane prepolymer (b), 10-30 parts of acrylic ester (c) and 1-30 parts of diluent (d). The binder is of a bi-component system, and the acrylic ester and organic peroxides are separately stored. The polyurethane prepolymer is mixed with other components at the temperature of not higher than 60 DEG C. According to the invention, the binder with improved heat resistance and high-temperature toughness is prepared by taking the polyurethane prepolymer as a toughening component through an interpenetrating polymer network (IPN) synthesis method. The binder is used for manufacturing a die for casting metal castings, and thereby, the high-temperature strength of a core mold can be increased. The invention also provides a cast mixture containing the bi-component epoxy resin binder, a cast molding body obtained from the cast mixture, a method for casting metal products by using the molding body and the castings obtained by the method.
Description
Technical field
The present invention relates to polymeric composition field, relate in particular to a kind of binding agent for casting pattern and core, the invention still further relates to the cast mixture and the casting body that comprise this binding agent, also relate to the method for casting metals goods and the foundry goods being obtained by the method.
Background technology
In foundary industry, sulfur dioxide method is another kind air blowing cold-box process and the formative method of exploitation after triethylamine set process.
SO2-furane resins method has been invented by France SPAIC company in 1971, its technical process is: the activator containing peroxide is added in core sand, the nascent oxygen discharging with peroxide during by core sand as SO2 is combined and is generated SO3, SO3 generates sulfuric acid with the water being dissolved in binding agent and sand, impel resin that heat release polycondensation reaction occurs rapidly, core is hardened rapidly, and domestic custom is called SO2 method.This binder system comprises binding agent (furane resins), oxidant (methyl ethyl ketone peroxide), coupling agent (silane), catalyst (SO2).
SO2-epoxy resin method was produced for foundary industryization in nineteen eighty-three, adopted a kind of bi-component binding agent, and component A is comprised of epoxy resin and organic peroxide, and B component is to be added with acrylic acid modified dose to improve the epoxy resin of reactivity and setting rate.Compare with SO2-furane resins method, the up time of core sand is longer, has substantially solved the production problems such as core box fouling and sticking to mould, is applicable to producing in enormous quantities.
Within 1985, US Patent No. 4,518,723 disclose a kind of curable epoxy resin composition, the methyl alcohol that it uses 80% Epon828,10% phenolic resins, 0.2%A-187 silane and 10%, is wherein added with 20% tri methylol triacrylate and 30% cumyl hydroperoxide.
In the open CN 1646608A (denomination of invention is " the radical-cured cold-box binder that contains alkyl silicate ") of Chinese patent, disclose foundry binders system curing under SO2 and radical initiator effect, comprised: (a) epoxy resin of 20～70 weight portions; (b) acrylate of 5～50 weight portions; (c) alkyl silicate of 1～20 weight portion; (d) peroxide of effective dose.
In CN 1852782A (denomination of invention is " containing the acrylate-free binders of epoxy resin and alkyl silicate "), a kind of foundry binders system is disclosed, this system is solidified under sulfur dioxide and oxidant existence, and this adhesive system comprises: (a) epoxy resin of 40～80 weight portions; (b) fatty acid ester of 1～40 weight portion; (c) alkyl silicate of 1～10 weight portion; (d) oxidant of effective dose and (e) ethylenically unsaturated monomers or the polymer of 0 part.
In the open CN 1871080A of Chinese patent (denomination of invention is " containing the cold-box process adhesive of epoxy resin, acrylate and some Arrcostabs "), a kind of foundry binders system is disclosed, it will solidify under sulfur dioxide and radical initiator existence, and this adhesive system comprises: (a) epoxy resin of 20～70 weight portions; (b) acrylate of 1～50 weight portion; (c) fatty acid alkyl esters of 1～30 weight portion; (d) oxidant of effective dose.
In the open CN 101484258A of Chinese patent (denomination of invention is " using epoxy-acrylate cold-box binder to prepare the method for erosion resistant foundry shapes "), disclosing a kind of foundry binders comprises: (a) epoxy resin of 20～70 weight portions; (b) acrylate of 5～50 weight portions; (c) silane of the organic functional of at least 3.0 % by weight; (d) peroxide of effective dose.
The sulfur dioxide of the prior art sclerosis cold-box binder of blowing, is being mixed to form resin sand compound with casting aggregate, during for the manufacture of the core mould of metal casting, exists poor toughness, elevated temperature strength low, is easy to thermal deformation, the defects such as the percent defective height causing.
Summary of the invention
The present invention has overcome above-mentioned shortcoming, has proposed a kind of bi-component epoxide-resin binding agent.
The present invention solves the technical scheme that its technical problem takes:
A binding agent, mainly composed of the following components:
(a) epoxy resin 40～80 weight portions
(b) base polyurethane prepolymer for use as 1～30 weight portion
(c) acrylate 10～30 weight portions
(d) high boiling ester is or/and hydrocarbon solvent 1～30 weight portion
(e) organic peroxide 15～75 weight portions,
Wherein, described base polyurethane prepolymer for use as is no more than 50% of epoxy resin by weight, is preferably no more than 30% of epoxy resin, more preferably no more than 25%, more preferably no more than 20%, is most preferably not exceeding 15%.And described binding agent is bicomponent system, component I comprises (c) acrylate of all wt part, and (b) base polyurethane prepolymer for use as, (a) epoxy resin and (d) part in diluent; Component I I comprises all wt part (e) organic peroxide, and (b) base polyurethane prepolymer for use as, (a) epoxy resin and (d) remainder in diluent, described base polyurethane prepolymer for use as is to mix with all the other components in the temperature that is no more than 60 ℃.
In a kind of preferred embodiment, base polyurethane prepolymer for use as is made by following methods:
A. the benzylic ether phenolic resins having melted is dropped in reactor, add thermal agitation, under vacuum, after dehydration, be cooled to below 65 ℃, add PIC;
B. by mixture 70-130 ℃ of insulation reaction.
In a kind of preferred embodiment, benzylic ether phenolic resins is that weight average molecular weight is 500～2000 high ortho position benzylic ether phenolic resins.
In exemplary embodiment of the present invention, PIC is diphenyl methane-4,4 '-vulcabond, thick diphenyl methane-4,4 '-vulcabond, poly methylene poly phenyl poly isocyanate, 1, a kind of or its combination in hexamethylene-diisocyanate, IPDI.
In exemplary embodiment of the present invention, epoxy resin is a kind of or its combination of novolac epoxy resin, glycidyl amine type epoxy resin, bisphenol A epoxide resin, cycloaliphatic epoxy resin, bisphenol F epoxy resin.
In exemplary embodiment of the present invention, acrylate is a kind of or its combination of tripropylene glycol diacrylate, hexanediyl ester, trimethylolpropane triacrylate.
In exemplary embodiment of the present invention, diluent comprises high boiling ester and high boiling hydrocarbon, and this high boiling ester is a kind of or its combination of dimethyl succinate, dimethyl glutarate, dimethyl adipate, dioctyl adipate, dibutyl phthalate, dioctyl phthalate, diisooctyl phthalate; This high boiling hydrocarbon is a kind of or its combination in the petroleum liquid aromatic hydrocarbons fraction of 130～370 ℃ of kerosene, boiling range.
Preferably, described organic peroxide activator is a kind of or its combination in cumyl hydroperoxide, methyl ethyl ketone peroxide, t-butyl hydroperoxide.
This binding agent is mixed to form casting resin sand compound with casting aggregate, and described casting resin sand compound is for the manufacture of the mould of cast metal foundry goods.
It is toughness reinforcing component that the present invention adopts base polyurethane prepolymer for use as, it and epoxy resin form interpenetrating networks (IPN) structure, cooperative effect by IPN makes the toughness of epoxy adhesive and heat resistance etc. simultaneously higher than one-component, improved the elevated temperature strength of pattern, core, make it to be difficult for thermal deformation, casting quality improves significantly.
The method that the invention still further relates to casting metals goods, it comprises: (a) a kind of casting of metals liquid is poured in above-mentioned mould (casting body); (b) make described casting of metals liquid cooling but and solidify; And (c) then isolate molded foundry goods.Therefore the present invention also relates to the foundry goods being obtained by the method.
The specific embodiment
In one aspect of the invention, a kind of epoxy adhesive is provided, it is by weight mainly by 40～80 parts of epoxy resin, 1～30 part of base polyurethane prepolymer for use as, 10～30 parts of acrylate, 1～30 part of diluent and 15～75 parts of organic peroxides form, wherein, described base polyurethane prepolymer for use as is no more than 50% of epoxy resin, preferably be no more than 30% of epoxy resin, more preferably no more than 25%, more preferably no more than 20%, more preferably no more than 15%, be most preferably not exceeding 10%, and this binding agent is divided into component I and component I I packs separately, wherein, component I comprises all wt part (c) acrylate, and (a) base polyurethane prepolymer for use as, (a) epoxy resin and (a) part in diluent, component I I comprises all wt part (e) organic peroxide, and (a) base polyurethane prepolymer for use as, (a) epoxy resin and (a) remainder in diluent.
Further, said composition is mainly comprised of 55～75 parts of epoxy resin, 5～25 parts of base polyurethane prepolymer for use as, 20～30 parts of acrylate, 5～25 parts of diluents and 35～65 parts of organic peroxides.In this preferable range, heat-resisting quantity and the toughness of gained binding agent are better.
Except diluent can be by observing or the conventional means such as detection determines, all the other compositions value arbitrarily in above-mentioned scope.For example, epoxy resin can be got the arbitrary integer between 55 and 75, for example can get 56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74, base polyurethane prepolymer for use as can be got the arbitrary integer between 5～25, for example, can get 7,8,10,12,14,1617,18,20,21,22,24.
In the present invention, above-mentioned base polyurethane prepolymer for use as is the product that PIC and benzylic ether phenolic resins carry out polymerisation gained, PIC utilization links together some benzylic ether phenolic aldehyde with two isocyanate groups (N=CO) on a part, is more conducive to form inierpeneirating network structure.Benzylic ether phenolic resins is also referred to as ether type phenolic resins, refers to the phenolic resins of the dibenzyl ehter bond that contains 15～24% in resin.In the present invention, preferably use high ortho position benzylic ether phenolic resins, so-called high ortho position benzylic ether phenolic resins refers to the phenolic resins that neighbour/contrast is greater than 1, and major part is the phenolic resins at ortho position in other words.Use high ortho position benzylic ether phenolic resins can obtain curing rate faster.In typical way of the present invention, the weight average molecular weight of the high ortho position benzylic ether phenolic resins using is 500～2000, for example, can adopt the high ortho position benzylic ether phenolic resins disclosing in the applicant's the ZL200710188114.3 of mandate patent of invention (denomination of invention is " a kind of high performance low smoke flame-proof amine method cold core box binder "), wherein disclosed in detail preparation method, the full content of the document is incorporated to herein with reform.
The PIC that the present invention uses can be aliphatic polymeric isocyanate or aromatic poly-isocyanate, and the example of aliphatic polymeric isocyanate has isophorone vulcabond, hexamethylene diisocyanate.The example of aromatic poly-isocyanate has diphenyl methane-4,4 '-vulcabond (referred to as " MDI "), thick diphenyl methane-4,4 '-vulcabond (referred to as thick " MDI ") or poly methylene poly phenyl poly isocyanate (referred to as " PAPI "), or their composition.
In order to obtain base polyurethane prepolymer for use as, benzylic ether phenolic resins and PIC get 1 by weight: the ratio of 0.05-0.20, wherein, preferably 1: 0.07-0.14.In order to prepare above-mentioned base polyurethane prepolymer for use as, make benzylic ether phenolic resins and PIC 70-130 ℃, preferably 70-110 ℃, more preferably at 80-90 ℃, carry out polymerization.
Epoxy resin is the resin with epoxide group, makes the epoxy functionalities (epoxide group in each molecule) of epoxy resin be equal to or greater than 1.9, typically is 2.0-4.0.
The diglycidyl ether that can comprise for the example of epoxy resin of the present invention (1) bisphenol-A, B, F, (2) epoxy phenolics, it is the glycidol ether of phenolic resins, (3) cycloaliphatic epoxy resin, (4) glycidyl amine type epoxy resin and (5) their mixture.
Epoxy resin (1) reacts to prepare with bisphenol compound by chloropropylene oxide under base catalyst exists.By control operation condition, and change the ratio of chloropropylene oxide and bisphenol compound, can prepare the product of different molecular weight.The epoxy resin of the above-mentioned type based on various bis-phenols can be obtained by commercial channel widely.
Epoxy resin (2), the example that is epoxy phenolics comprises epoxy cresol and epoxy phenol phenolic resins, it is by making phenolic resins (conventionally forming by orthoresol or phenol and formolite reaction) and chloropropylene oxide, 4-chloro-1,2 epoxy butanes, 5-bromo-1,2 epoxy pentanes or 6-are chloro-1, and the reaction such as 3-epoxy hexane forms.
Epoxy resin (3), the example that is cycloaliphatic epoxy resin comprises having any aliphatic series of any aliphatic group, alicyclic or mixed aliphatic series-cycloaliphatic epoxides, and comprise the aliphatic epoxy resin with aryl, i.e. mixed aliphatic series-aromatic epoxy resin.Aliphatic epoxy resin can contain the cyclosiloxane monomer oxide mixing with epoxide polymerization.
Epoxy resin (4),, glycidyl amine type epoxy resin, with primary amine or secondary amine and the synthetic compound with two or more glycidol amino of chloropropylene oxide, operable example has 4,4 '-MDA epoxy resin (AG-80 type), para-aminophenol epoxy resin (AFG-90 type), four glycidol m-xylene diamines, four glycidol-1, the two aminomethyl cyclohexanes of 3-etc.
For acrylate of the present invention, be that unimolecule has at least two reactive moieties to play the acrylate of crosslinked action, it typically is linear diacrylate.Typical example comprises tripropylene glycol diacrylate, hexanediyl ester, trimethylolpropane triacrylate.
In most of the cases, need in binding agent, introduce diluent (solvent), for reducing the viscosity of binding agent, make the viscosity of gained epoxy resin lower than 1000 centipoises, preferably lower than 400 centipoises.Conventionally, the total amount of epoxy resin of take is benchmark, and the total amount of all solvents is 0-25 % by weight.Operable solvent comprises liquid high boiling ester, vegetable oil, lower alcohol and hydro carbons, for example aromatic hydrocarbons.In the present invention, high boiling ester refers to that boiling point is between 100～400 ℃, especially between 150～400 ℃, the carboxylate between 200～400 ℃ particularly, example comprises dibutyl phthalate, dioctyl phthalate, diisobutyl phthalate, diisooctyl phthalate, adipic acid dibutyl ester, dimethyl succinate, dimethyl glutarate, dimethyl adipate; The example of lower alcohol comprises methyl alcohol, ethanol, butanols, isopropyl alcohol; The example of aromatic hydrocarbons comprises that benzene,toluene,xylene and ethylbenzene and boiling range are the petroleum liquid aromatic hydrocarbons fraction of 150～290 ℃; The example of vegetable oil comprises rapeseed oil, soya-bean oil, linseed oil, sunflower oil, peanut oil, tung oil, palm-kernel oil, coconut oil, castor oil and olive oil, wherein the preferred minimum rapeseed oil of cost.
In a kind of preferred embodiment of the present invention, use the mixed diluent being formed by high boiling ester and aromatic solvent, wherein introduce the effect that high boiling ester can play plasticising.In the situation that using mixed diluent, the ratio of high boiling ester and aromatic solvent can be controlled in (2-4): in 1 scope.
Can also in binding agent, introduce other composition, as silane coupler etc., to improve the performance of product.This silane coupler has following general formula;
Wherein R ' is alkyl, and is preferably the alkyl of 1-6 carbon atom; R is the alkyl of alkyl, alkoxyl replacement or the alkyl that alkylamine replaces, and wherein this alkyl has 1-6 carbon atom.The weight of binding agent of take is benchmark, and silane is preferably with 0.01-2 % by weight, more preferably the amount of 0.1-0.5 % by weight adds in binding agent.In binding agent, introduce silane coupler, can strengthen the adhesion between binding agent and aggregate.
Binding agent of the present invention is not higher than 65 ℃ by above-mentioned each composition, especially below 60 ℃, more preferably below 50 ℃, more preferably below 40 ℃, most preferably in the temperature below 35 ℃, be uniformly mixed, impel epoxy resin and base polyurethane prepolymer for use as to form inierpeneirating network structure.
By methods known in the art, the binding agent of dissimilar aggregate and different amounts is used to prepare cast mixture.Use this adhesive system and suitable aggregate can prepare common formed body, hot investment casting formed body and fire-resistant formed body.The amount of binding agent used and the type of aggregate are known for those skilled in the art.The aggregate that is preferred for preparing cast mixture is sand, wherein at least about 70 % by weight, preferably the sand at least about 85 % by weight is silica.Other aggregate materials for conventional cast formed body that are applicable to comprise zircon, olivine, aluminosilicate, chromite sand etc.
Those skilled in the art should understand and can in aggregate or cast mixture, add other additives as siloxanes, releasing agent, defoamer, wetting agent etc.Designer's specific purposes are depended in the selection of special additive.
In ordinary sand casting application, the weight of aggregate of take is benchmark, and the amount of binding agent is not more than approximately 10 % by weight conventionally, and usually in the scope of about 0.5-7.0 % by weight.More frequently, the weight of aggregate in ordinary sand casting formed body of take is benchmark, for the binder amount of normal sands casting body, is about 0.6-approximately 5.0 % by weight.
By hammering, winding-up or other known casting core and mould manufacturing method, cast mixture is molded as to the formed body of hope.Use gaseous sulfur dioxide as curing agent (contain the most typically the nitrogen of 35-65 % by weight sulfur dioxide and the blend of sulfur dioxide, wherein nitrogen is as carrier), by cold-box process, formed body is almost solidified simultaneously.Formed body is preferably exposed to the gaseous sulfur dioxide of effective catalytic amount, and optionally can use vector gas.The open-assembly time of sand mixture in gas typically is 0.5-10 second.Casting body is again with solidifying after sulfur dioxide inflation.If casting body applies with fireproof coating, may need stove dry.
Following examples are only exemplary, can not be interpreted as limiting the scope of the invention.
Embodiment 1
The preparation of base polyurethane prepolymer for use as
By in 185 kilograms of input reactors of the benzylic ether phenolic resins having melted, add thermal agitation, dehydration (vacuum is 10mm mercury column) under vacuum, reaches 120 ℃ without till bubble to temperature.Be cooled to 60 ℃, add 15 kilograms of poly methylene poly phenyl poly isocyanate PM-200; Reactor condenser is adjusted into reflux state, and under agitation logical steam heats up, and makes temperature rise to 80 ℃ in 30 minutes, and 80～90 ℃ of insulation reaction 180 minutes.After insulation finishes, material is cooled to below 60 ℃.
The preparation of component I
100 kilograms of above-mentioned base polyurethane prepolymer for use as, add 331,300 kilograms of trimethylolpropane triacrylates of 450 kilograms of epoxy resin DER, 90 kilograms of dibutyl phthalates, 20 kilograms of aromatic hydrocarbons Solvesso 100 diluents to add in mixing kettle, start stirring, mix approximately 2 hours, make mixing of materials even.
The preparation of component I I
100 kilograms of 200 kilograms of cumyl hydroperoxides, above-mentioned base polyurethane prepolymer for use as add in mixing kettle, start stirring, mix approximately 2 hours, make mixing of materials even, more than obtain bi-component binding agent sample 1.
Embodiment 2
The preparation of base polyurethane prepolymer for use as
By in 25 kilograms of input reactors of the benzylic ether phenolic resins having melted, add thermal agitation, dehydration (vacuum is 10mm mercury column) under vacuum, reaches 120 ℃ without till bubble to temperature.Be cooled to 60 ℃, add 5 kilograms of poly methylene poly phenyl poly isocyanate PM-200; Reactor condenser is adjusted into reflux state, and under agitation logical steam heats up, and makes temperature rise to 80 ℃ in 30 minutes, and 80～90 ℃ of insulation reaction 180 minutes.After insulation finishes, material is cooled to below 60 ℃.
The preparation of component I
10 kilograms of above-mentioned base polyurethane prepolymer for use as, add 331,300 kilograms of trimethylolpropane triacrylates of 800 kilograms of epoxy resin DER, 100 kilograms of dibutyl phthalates, 50 kilograms of aromatic hydrocarbons Solvesso 100 diluents to add in mixing kettle, start stirring, mix approximately 2 hours, make mixing of materials even.
The preparation of component I I
650 kilograms of cumyl hydroperoxides, 20 kilograms, 100 kilograms dibutyl phthalates of above-mentioned base polyurethane prepolymer for use as, 50 kilograms of aromatic hydrocarbons Solvesso 100 add in mixing kettle, start stirring, mix approximately 2 hours, make mixing of materials even, more than obtain bi-component binding agent sample 2.
Embodiment 3
The preparation of base polyurethane prepolymer for use as
By in 140 kilograms of input reactors of the benzylic ether phenolic resins having melted, add thermal agitation, dehydration (vacuum is 10mm mercury column) under vacuum, reaches 120 ℃ without till bubble to temperature.Be cooled to 60 ℃, add 10 kilograms of poly methylene poly phenyl poly isocyanate PM-200; Reactor condenser is adjusted into reflux state, and under agitation logical steam heats up, and makes temperature rise to 80 ℃ in 30 minutes, and 80～90 ℃ of insulation reaction 180 minutes.After insulation finishes, material is cooled to below 40 ℃.
The preparation of component I
100 kilograms of above-mentioned base polyurethane prepolymer for use as, add 331,200 kilograms of trimethylolpropane triacrylates of 550 kilograms of epoxy resin DER, 60 kilograms of dibutyl phthalates, 20 kilograms of aromatic hydrocarbons Solvesso 100 diluents to add in mixing kettle, start stirring, mix approximately 2 hours, make mixing of materials even.
The preparation of component I I
400 kilograms of cumyl hydroperoxides, 50 kilograms, 60 kilograms dibutyl phthalates of above-mentioned base polyurethane prepolymer for use as, 10 kilograms of aromatic hydrocarbons Solvesso 100 diluents add in mixing kettle, start stirring, mix approximately 2 hours, make mixing of materials even, more than obtain bi-component binding agent sample 3.
Embodiment 4
The preparation of base polyurethane prepolymer for use as
By in 88 kilograms of input reactors of the benzylic ether phenolic resins having melted, add thermal agitation, dehydration (vacuum is 10mm mercury column) under vacuum, reaches 120 ℃ without till bubble to temperature.Be cooled to 60 ℃, add 12 kilograms of poly methylene poly phenyl poly isocyanate PM-200; Reactor condenser is adjusted into reflux state, and under agitation logical steam heats up, and makes temperature rise to 80 ℃ in 30 minutes, and 80～90 ℃ of insulation reaction 180 minutes.After insulation finishes, material is cooled to below 40 ℃.
The preparation of component I
50 kilograms of above-mentioned base polyurethane prepolymer for use as, add 331,300 kilograms of trimethylolpropane triacrylates of 550 kilograms of epoxy resin DER, 140 kilograms of dibutyl phthalates, 20 kilograms of aromatic hydrocarbons Solvesso 100 diluents to add in mixing kettle, start stirring, mix approximately 2 hours, make mixing of materials even.
The preparation of component I I
600 kilograms of cumyl hydroperoxides, 50 kilograms, 60 kilograms dibutyl phthalates of above-mentioned base polyurethane prepolymer for use as, 30 kilograms of aromatic hydrocarbons Solvesso 100 diluents add in mixing kettle, start stirring, mix approximately 2 hours, make mixing of materials even, more than obtain bi-component binding agent sample 3.
For the performance of specimen 1-4, get 2000 grams of great Lin normal sands (300/150 μ m), add 9 grams of component I and the component I I21 gram of counter sample.Mix 2 minutes, then this resin sand is pressed to technological parameter in table 1 by MLA1 core making machine, it is that 12mm, height are the cylindrical sample of 20mm (Φ 12X50) that air blowing is pressed into diameter, in QX-GWY-1 type multifunctional high-temperature tester, heat-resistant time and the high temperature compression strength of measuring core sand, the results are shown in Table 2.
Table 1. core manufacturing craft parameter
| Shooting pressure | Blow SO2 pressure | Washing pressure | Blow the SO2 time | Wash time |
| 0.4MPa | 0.2MPa | 0.2MPa | 15.0 seconds | 10.0 seconds |
Core heat-resistant time and the high temperature compression strength of table 2. sample 1-4
| Test article | The heat-resistant time of core | High temperature compression strength |
| Sample 1 | 96 seconds | 0.26MPa |
| Sample 2 | 92 seconds | 0.23MPa |
| Sample 3 | 106 seconds | 0.36MPa |
| Sample 4 | 112 seconds | 0.46MPa |
Above a kind of bi-component epoxide-resin binding agent provided by the present invention is described in detail, applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (19)
1. a bi-component epoxide-resin binding agent, is characterized in that, mainly composed of the following components:
Wherein, described base polyurethane prepolymer for use as is no more than 50% of epoxy resin, and described binding agent is bicomponent system, component I comprises (c) acrylate of all wt part, and (b) base polyurethane prepolymer for use as, (a) epoxy resin and (d) part in diluent; Component I I comprises all wt part (e) organic peroxide, and (b) base polyurethane prepolymer for use as, (a) epoxy resin and (d) remainder in diluent, and described base polyurethane prepolymer for use as is to mix with all the other components in the temperature that is no more than 60 ℃.
2. bi-component epoxide-resin binding agent according to claim 1, is characterized in that: described binding agent is mainly composed of the following components:
3. bi-component epoxide-resin binding agent according to claim 2, is characterized in that: described base polyurethane prepolymer for use as is no more than 30% of epoxy resin.
4. bi-component epoxide-resin binding agent according to claim 3, is characterized in that: described base polyurethane prepolymer for use as is no more than 20%.
5. bi-component epoxide-resin binding agent according to claim 4, is characterized in that: described base polyurethane prepolymer for use as is no more than 15%.
6. according to the bi-component epoxide-resin binding agent described in claim 1-5 any one, it is characterized in that: described diluent is comprised of high boiling ester and aromatic hydrocarbons.
7. epoxy adhesive according to claim 6, is characterized in that: described high boiling ester is one or more of dimethyl succinate, dimethyl glutarate, dimethyl adipate, adipic acid dibutyl ester, dibutyl phthalate, o-phthalic acid dibutyl ester and diisooctyl phthalate; Described aromatic hydrocarbons is the petroleum liquid aromatic hydrocarbons fraction of 130～370 ℃ of kerosene or boiling ranges.
8. bi-component epoxide-resin binding agent according to claim 1, is characterized in that: described base polyurethane prepolymer for use as is to obtain with PIC and the polymerization of benzylic ether phenolic resins.
9. bi-component epoxide-resin binding agent according to claim 8, is characterized in that: described base polyurethane prepolymer for use as is made by following methods:
A. the benzylic ether phenolic resins having melted is dropped in reactor, add thermal agitation, under vacuum, after dehydration, be cooled to below 65 ℃, add PIC;
B. by mixture 70-130 ℃ of insulation reaction.
10. bi-component epoxide-resin binding agent according to claim 9, is characterized in that: described benzylic ether phenolic resins is that weight average molecular weight is 500～2000 high ortho position benzylic ether phenolic resins.
Bi-component epoxide-resin binding agent described in 11. according to Claim 8 to 10 any one, is characterized in that: the weight ratio of benzylic ether phenolic resins and PIC is 1 ︰ 0.05-0.20.
Bi-component epoxide-resin binding agent described in 12. according to Claim 8 to 10 any one, is characterized in that: the weight ratio of benzylic ether phenolic resins and PIC is 1 ︰ 0.07-0.14.
Bi-component epoxide-resin binding agent described in 13. according to Claim 8 to 10 any one, it is characterized in that: described PIC is diphenyl methane-4,4 '-vulcabond, thick diphenyl methane-4,4 '-vulcabond, poly methylene poly phenyl poly isocyanate, 1, a kind of or its combination in hexamethylene-diisocyanate, IPDI.
14. bi-component epoxide-resin binding agents according to claim 1, is characterized in that: further comprise silane coupler.
15. bi-component epoxide-resin binding agents according to claim 1, is characterized in that: described acrylate is one or more of tripropylene glycol diacrylate, hexanediyl ester, trimethylolpropane triacrylate.
16. 1 kinds of cast mixtures, comprising:
(a) casting aggregate;
(b) the bi-component epoxide-resin binding agent described in claim 1-5 any one.
17. 1 kinds are utilized the casting body that prepared by cast mixture described in claim 16.
The method of 18. 1 kinds of casting metals goods, it comprises:
(a) a kind of casting of metals liquid is poured in the casting body described in claim 17;
(b) make described casting of metals liquid cooling but and solidify; And
(c) then isolate molded foundry goods.
19. 1 kinds of foundry goods of manufacturing according to method described in claim 18.
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| CN111391190B (en) * | 2020-03-30 | 2022-02-15 | 大连日瑞铸模有限公司 | Composite resin casting mold and manufacturing method thereof |
| CN112692226B (en) * | 2020-12-09 | 2022-08-30 | 南昌科勒有限公司 | Hot core box resin sand and resin sand core comprising same |
| CN113172199B (en) * | 2021-04-23 | 2023-03-14 | 广西兰科资源再生利用有限公司 | Preparation method of novel ammonia-free curing type casting precoated sand |
| CN114891161A (en) * | 2022-05-26 | 2022-08-12 | 共享新材料(山东)有限公司 | Slurry composite material and preparation method and mold thereof |
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| CN1149007A (en) * | 1995-10-18 | 1997-05-07 | 博登公司 | Urethane foundry binders resistant to water-based coatings |
| CN1322156A (en) * | 1998-09-02 | 2001-11-14 | 阿什兰公司 | Foundry binder of epoxy resin, acrylated polyisocyanate and acrylic monomer and/or polymer, and cold-box process |
| CN1384169A (en) * | 2001-05-08 | 2002-12-11 | 伊利诺斯工具制造公司 | Two-component structure adhesive with long service life |
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| CN102581216A (en) | 2012-07-18 |
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