| I-ejenti yokwelapha ye-Epoxy ne-polyurethane | ||||||
| Inombolo | I-MOFAN IBANGA | Igama Lekhemikhali | Ifomula Yesakhiwo | Isisindo sama-molecule | Inombolo ye-CAS | Isicelo |
| 1 | MOFAN DBU | 1,8-Diazabicyclo[5.4.0]undec-7-ene |  | 152.24 | 6674-22-2 | I-ejenti yokwelapha yama-resin epoxy kanye ne-polyurethane. |
| 2 | I-MOFAN SA-1 | Usawoti we-DBU/phenoxide |  | 246.35 | 57671-19-9 | Isikhuthazi esinamandla okushisa sisebenza ku-ca.40~50℃ |
| 3 | I-MOFAN SA-102 | Usawoti we-DBU/2-ethylhexanoate |  | 296.4 | 33918-18-2 | Isikhuthazi esinamandla okushisa sisebenza ku-ca.50~60℃- |
| 5 | I-MOFAN DB60 | Usawoti we-DBU / Phthalic Acid |
| 318.37 | 97884-98-5 | I-catalyst ezwela kakhulu ekushiseni. Isebenza ku-90℃ noma ngaphezulu. |
MOFAN DBU
Ngidinga isisekelo esiqinile se-catalyst yezinhlelo zokupholisa ze-epoxy-anhydride. Isebenza kanjani i-DBU?
I-DBU iyisihluthulelo sesisekelo esinamandla kakhulu esisheshisa kakhulu ukusabela kwe-epoxy-anhydride ku-80–120°C, kunciphisa isikhathi sokwelapha ngo-50% noma ngaphezulu.
Isinamathelisi sami se-epoxy sinamandla aphansi okushisa okuphezulu. Ingabe i-DBU ingayithuthukisa?
Yebo, i-DBU ikhuthaza ukuxhumanisa okuphelele, iphakamisa izinga lokushisa lokuguqulwa kwengilazi (Tg) ngo-10–20°C uma kuqhathaniswa nama-amine esithathu njenge-DMP-30.
Ingabe i-DBU ifanelekile kuma-epoxy ahlanganisiwe afihlekile?
Hhayi njengesisekelo esimsulwa; isabela ne-epoxy ekushiseni kwegumbi. Sebenzisa ama-derivative e-DBU avinjiwe njenge-MOFAN SA-1 noma i-SA-102 ezinhlelweni zengxenye eyodwa.
I-polyurethane elastomer yami idinga i-catalyst enamandla yokulungisa ukushisa ukuze ithuthukise ukumelana nokushisa. Ingabe i-DBU ingasetshenziswa?
Yebo, i-DBU iyasebenza ekunciphisweni kwe-isocyanate; sebenzisa i-0.1–0.5 phr ukwandisa ukuzinza kokushisa.
Ingakanani idosi enconywayo ye-DBU ohlelweni lwe-epoxy-amine olunezingxenye ezimbili ekushiseni kwegumbi?
0.5–2 phr (kusekelwe ku-epoxy resin); kunciphisa kakhulu impilo yebhodwe, ngakho-ke sebenzisa ngokucophelela ezingxenyeni ezincane.
Ingubo yami ye-epoxy ayipholi ngokuphelele ekushiseni okuphansi (5°C). Ingabe i-DBU ingasiza?
Yebo, i-DBU igcina umsebenzi wokuvuselela ngisho nasemazingeni okushisa aphansi; khulisa ufike ku-2-3 phr wezinhlobo zasebusika.
Ingabe i-DBU ibangela ukuphuziza ekubunjweni kwe-epoxy okucacile?
Yebo, kungabangela ukushintsha kombala; ukuze uthole ukucaca kokukhanya, sebenzisa i-catalyst engeyona elula noma inguqulo evinjiwe.
I-prepreg yami ye-carbon fiber composite idinga ukwelashwa okusheshayo ku-120°C. Ingabe i-DBU iyafaneleka?
Yebo, kodwa ngoba iwuketshezi futhi iyasebenza ekushiseni kwegumbi, gcina i-prepreg iqandisiwe. Cabanga nge-SA-102 ukuze uthole ukubambezeleka okungcono.
Ingabe i-DBU ingasetshenziswa njenge-CO₂ umunca noma ku-polyurethane foam njenge-trimer catalyst?
Yebo, i-DBU isetshenziswa ekubambeni i-CO₂ kanye ne-trimer catalyst ye-PIR rigid foam (0.2–0.6 phr).
Ingakanani isikhathi sokuphila se-MOFAN DBU esitsheni esivuliwe?
Izinyanga ezingu-12 uma igcinwe yomile futhi ingaphansi kwe-nitrogen; imunca i-CO₂ emoyeni eyakha i-carbonate, okunciphisa umsebenzi.
I-MOFAN SA-1
Ngifuna inhlaka ye-epoxy enengxenye eyodwa ekwazi ukugcina isikhathi eside ekushiseni kwegumbi kodwa ephola ngokushesha ku-40–50°C. Ingabe i-SA-1 iyafaneleka?
Yebo, i-MOFAN SA-1 iyi-DBU salt evinjiwe ehlala ingasebenzi ngaphansi kuka-40°C futhi isebenza ngokushesha ku-40–50°C, okunikeza izinyanga ezingaphezu kweziyisithupha zokuphila eshalofini lokushisa legumbi.
I-epoxy structural film adhesive yami idinga ukulungiswa ku-50°C imizuzu engama-30. Yisiphi isilinganiso se-SA-1 esivamile?
I-1–3 phr isekelwe ku-epoxy resin; inikeza ukuphiliswa okugcwele zingakapheli imizuzu engama-30 ku-50°C ngaphandle kokudinga ama-oven ashisa kakhulu.
Ingabe i-SA-1 ingasetshenziswa ezinhlelweni zokwelapha umswakama ze-polyurethane ezinengxenye eyodwa?
Akukhuthazwa; yenzelwe i-epoxy. Ku-PU, sebenzisa i-amine evinjiwe njenge-MOFAN SA-102.
I-prepreg yami ye-carbon fiber idinga ukugcinwa ekamelweni lokushisa izinyanga. Ingabe i-SA-1 inikeza ukubambezeleka okuhle?
Yebo, i-SA-1 inikeza ukubambezeleka okuhle kakhulu ezinhlelweni ze-epoxy-anhydride noma ze-epoxy-dicyandiamide; gcina ifomula yomile.
Liyini izinga lokushisa lokusebenza le-SA-1?
Cishe 40–50°C. Ngaphansi kuka-40°C, i-catalyst empeleni ayisebenzi.
Ingxube yami yokubhaka e-elekthronikhi idinga ukwelashwa okuphansi kwezinga lokushisa (50°C) ukuze kugwenywe ukulimaza izingxenye. Ingabe i-SA-1 iyisinqumo esifanele?
Yebo, i-SA-1 yelapha ku-50°C ngaphandle kokukhuphuka kwe-exotherm; sebenzisa i-1.5–2.5 phr ukuze welapheke ngokuphelele emahoreni angu-1–2.
Ingabe i-SA-1 ibangela ukugqwala ethusini noma kwezinye izinsimbi?
Cha, usawoti we-phenoxide ngokuvamile awuboli; noma kunjalo, hlola ukuthintana kwakho kwensimbi okuthile.
Inhlaka yami ye-epoxy ilahlekelwa amandla ngemva kokuguga okushisa. Ingabe i-SA-1 ingathuthukisa ukumelana nokuguga?
I-DBU evinjiwe inikeza ikhambi elilawulwa kakhudlwana, inciphisa ukucindezeleka kwangaphakathi futhi ithuthukise ukuguga kokushisa.
Ingabe i-SA-1 ingasetshenziswa nama-hardener e-anhydride kuma-compound e-epoxy molding asezingeni eliphezulu?
Yebo, i-SA-1 isebenza kahle nama-anhydride (isb., i-MHHPA, i-THPA) ekwelapheni ku-80–100°C, okunikeza i-Tg ephezulu.
Iyini indlela ejwayelekile yokwenza i-epoxy paste enengxenye eyodwa ene-SA-1?
I-Epoxy resin (100 phr), i-anhydride hardener (80–100 phr), i-SA-1 (1–3 phr), kanye nezigcwalisi njengoba kudingeka. Gcina ngaphansi kuka-30°C.
I-MOFAN SA-102
Ngidinga inhlaka ye-epoxy enengxenye eyodwa ephola ku-50–60°C ukuze ihlanganise isakhiwo sezimoto. Kungani ukhethe i-SA-102?
I-SA-102 inezinga lokushisa lokusebenza eliphakeme kancane (50–60°C) kune-SA-1, okunikeza ukuzinza okungcono kakhulu kokushisa kwegumbi ngenkathi isaphila ekushiseni okumaphakathi.
I-polyurethane yami ene-single component moisture-cure sealant idinga i-catalyst ecashile esebenza ku-60°C. Ingabe i-SA-102 iyafaneleka?
Yebo, i-SA-102 ingasetshenziswa ezinhlelweni ze-polyurethane njenge-catalyst evinjiwe, ikakhulukazi ekusetshenzisweni kokupholisa okuphoqelelwe ku-60–80°C.
Iyini inzuzo ye-SA-102 kune-SA-1?
I-SA-102 inikeza ukuzinza kwesikhathi eside sokugcina endaweni yokushisa kwegumbi (ngaphezu kwezinyanga ezingu-12) kanye nefasitela lokuvula elibukhali.
Ukulungiselela kwami i-epoxy kwama-blade e-wind turbine kudinga ukuqiniswa ku-60°C amahora ama-2. Yiliphi izinga le-SA-102 okufanele ngilisebenzise?
I-1–2 phr (ku-epoxy) ihlanganiswe ne-hardener efanele (i-dicyandiamide noma i-anhydride).
Ingabe i-SA-102 isebenza nezinhlelo zokukhipha i-polyurethane ukuze ilibazise ukusabela kuze kube yilapho kushiswa?
Yebo, ingasetshenziswa ukwenza i-polyurethane elapheka ngokushisa enengxenye eyodwa; umthamo ojwayelekile u-0.5–1.5 phr.
Izinto zami zokufaka i-electronic zidinga uhlelo olune-viscosity ephansi, olunengxenye eyodwa. Ingabe i-SA-102 iyahambisana?
Yebo, i-SA-102 iyancibilika kuma-resin amaningi e-epoxy futhi ayikhulisi kakhulu i-viscosity.
Ingakanani impilo yeshelufu yefomula ye-epoxy enengxenye eyodwa equkethe i-SA-102 ku-25°C?
Ngokuvamile kuthatha izinyanga ezingu-6-12 esitsheni esivaliwe, esomile; gwema umswakama kanye namazinga okushisa aphezulu.
Ingabe i-SA-102 ingasetshenziswa ukwelapha ama-resin epoxy-phenolic ezimbozweni ezishisa kakhulu?
Yebo, isheshisa ukuxhumanisa phakathi kwama-resin epoxy nama-phenolic ku-80–100°C.
I-glue yami ayiboli kahle uma isetshenziswa ezindaweni eziwugqinsi ngenxa yesinki yokushisa. I-SA-102 isisiza kanjani?
Ukusebenza kwayo okubangelwa ukushisa kuqinisekisa ukuphulukiswa ngisho nasesilinganisweni esikhulu uma izinga lokushisa lokusebenza selifinyelelwe.
Ingabe i-SA-102 inobuthi noma iyingozi?
Ayinawo ukuguquguquka okuphansi kodwa iyacasula isikhumba; isibambo sinamagilavu. Ayinazo izinsimbi ezisindayo.
I-MOFAN DB60
Ngikhiqiza izinamathiseli zesakhiwo se-epoxy ezinengxenye eyodwa ezidinga ukuqina izinyanga ku-40°C futhi ziqine ngaphezu kuka-90°C kuphela. Ingabe i-DB60 iyisinqumo esifanele?
Yebo, i-MOFAN DB60 inokushisa kokusebenza okungu-90°C noma ngaphezulu, okunikeza ukubambezeleka okuhle kakhulu ngisho nasezimweni ezishisayo.
I-powder coating yami yezingxenye zensimbi idinga i-ejenti yokwelapha esebenza ku-120°C. Ingabe i-DB60 ingasetshenziswa kuma-epoxy hybrid powders?
Yebo, i-DB60 isebenza kahle ekumbozweni kwe-epoxy powder; izinga elijwayelekile elingu-1–3% we-resin iyonke, iqina ku-120–150°C.
Iyini inzuzo ye-DB60 kune-SA-102 kuzinhlelo zokusebenza ze-prepreg?
I-DB60 ivumela ukugcinwa ekushiseni okujwayelekile (ngisho nakufika ku-40°C) ngaphandle kokuthuthukiswa, ilungele ukukhiqizwa kokulungiselela okukhulu.
I-composite yami ye-carbon fiber idinga ukucwiliswa ku-130°C imizuzu engama-30. Kufanele ngisebenzise i-DB60 engakanani?
I-2-4 phr isekelwe ku-epoxy; inikeza ukuphulukiswa okusheshayo ngokukhululwa okuncane kokuguquguquka.
Ingabe i-DB60 ingasetshenziswa ezinhlelweni zokupholisa ezisezingeni eliphezulu ze-polyurethane?
Yebo, njenge-catalyst evinjiwe yokuxhumanisa i-polyurethane esebenza ngokushisa, isib., kuma-adhesive ashisayo ancibilikayo.
Ingabe i-DB60 ibangela noma yikuphi ukushintsha kombala kuma-epoxy castings anombala okhanyayo ngemva kokwelashwa kokushisa okuphezulu?
Okuncane; kukhiqiza umbala ophuzi onsundu, ongaphansi kwezinye izinto eziningi ezicashile.
I-epoxy paste yami enengxenye eyodwa ayinakunamathela kahle ku-aluminium ngemva kokulungiswa. Ingabe i-DB60 ingathuthukisa ukunamathela?
Hhayi ngokuqondile; kodwa ngoba ivumela ukwelashwa okuhlanzekile, okushisa okuphezulu ngaphandle kokusabela kwangaphambi kwesikhathi, ukunamathela kungathuthukiswa.
Iyini inhlanganisela evamile ye-hardener ne-DB60 ye-epoxy enengxenye eyodwa?
I-Dicyandiamide (dicy) noma i-anhydride (MHHPA, i-nadic methyl anhydride) zivame ukusetshenziswa.
Ingxenye yami ehlanganisiwe inezikhala ngenxa yokufakwa kwe-gelling ngaphambi kwesikhathi. Ingabe i-DB60 izosusa izikhala?
Yebo, izinga lokushisa layo eliphezulu lokusebenza livumela ukugeleza okuphelele kwe-resin kanye nokuphuma komoya ngaphambi kokuba ukwelashwa kuqale.
Ingakanani impilo yeshelufu ye-DB60 ku-masterbatch?
Izinyanga ezingaphezu kwengu-12 uma igcinwe ngaphansi kuka-30°C esitsheni esomile nesivaliwe.