Umehluko phakathi kwe-polyurethane MDI nezinhlelo ze-TDI zemishini ye-elastomer
Isingeniso:
Imishini ye-polyurethane elastomer idlala indima ebalulekile embonini yesimanje.Kodwa-ke, uma kuziwa ekukhetheni uhlelo lwe-polyurethane, kunezindlela ezimbili eziyinhloko: uhlelo lwe-MDI (diphenylmethane diisocyanate) kanye nohlelo lwe-TDI (terephthalate).Lesi sihloko sizohlola umehluko phakathi kwalezi zinhlelo ezimbili ukusiza umfundi enze ukukhetha okunolwazi ngohlelo lokusebenza oluthile.
I. Imishini ye-Elastomer ye-Polyurethane MDI Systems
Incazelo Nokubunjwa: uhlelo lwe-MDI luyi-polyurethane elastomer eyenziwe nge-diphenylmethane diisocyanate njengento eluhlaza eyinhloko, ngokuvamile equkethe izinto ezisizayo ezifana ne-polyether polyol ne-polyester polyol.
Izici Nezinzuzo:
Amandla aphezulu kanye nokumelana nemihuzuko: Ama-elastomers wesistimu ye-MDI anezakhiwo ezinhle kakhulu zomzimba futhi agcina uzinzo ezindaweni ezinengcindezi ephezulu.
Ukumelana nokuguga okuhle kakhulu: ama-elastomer anezinhlelo ze-MDI anokumelana okuhle ne-oxidation kanye nemisebe ye-UV kanye nempilo ende yesevisi.
Ukumelana kahle nowoyela nezincibilikisi: Ama-elastomer e-MDI ahlala ezinzile lapho evezwe kumakhemikhali afana nowoyela nezincibilikisi.
Izindawo zokufaka isicelo: Ama-Elastomers ohlelo lwe-MDI asetshenziswa kabanzi ekwakhiweni kwezimoto, imishini yezemidlalo kanye nemikhiqizo yezimboni.
II.Imishini ye-elastomer ye-polyurethane TDI
Incazelo kanye nokwakheka: Uhlelo lwe-TDI i-polyurethane elastomer eyenziwe nge-terephthalate njengento eluhlaza eyinhloko, ngokuvamile iqukethe izinto ezisizayo ezifana ne-polyether polyol ne-polyester polyol.
Izici Nezinzuzo:
Ukunwebeka okuhle nokuthambile: Ama-elastomer esistimu ye-TDI anokuqina nokuthambile okuphezulu futhi afanele imikhiqizo edinga ukuzwakala kwesandla okuphezulu.
Ukusebenza okuhle kakhulu okugoba izinga lokushisa eliphansi: Ama-elastomer esistimu ye-TDI asenokusebenza okuhle kakhulu kokugoba ezindaweni ezinezinga lokushisa eliphansi, futhi akulula ukuwohloka noma ukuphuka.
Ifanele izimo eziyinkimbinkimbi: Ama-elastomer e-TDI ahamba phambili ekwenziweni kobumo obuyinkimbinkimbi ukuze ahlangabezane nezidingo zedizayini ehlukahlukene.
Izicelo: Ama-elastomer e-TDI asetshenziswa kakhulu kwifenisha nomatilasi, ukukhiqizwa kwezicathulo nezinto zokupakisha.
III.Ukuqhathaniswa kwezinhlelo ze-MDI kanye ne-TDI
Emkhakheni wemishini ye-polyurethane elastomer, izinhlelo ze-MDI ne-TDI zinezici nezinzuzo ezihlukene.Lawa mathebula alandelayo azophinde aqhathanise umehluko wawo mayelana nesakhiwo samakhemikhali, izakhiwo ezibonakalayo, ukuvikelwa kwemvelo nokuphepha, izindleko zokukhiqiza kanye nezindawo zokufaka isicelo:
| into yokuqhathanisa | Polyurethane MDI uhlelo | I-polyurethane TDI uhlelo |
| isakhiwo samakhemikhali | Ukusebenzisa i-diphenylmethane disocyanate njengento eyinhloko eluhlaza | Ukusebenzisa i-terephthalate njengento eyinhloko eluhlaza |
| Izici zokuphendula | Izinga eliphezulu lokuxhumanisa | kancane okuxhumene |
| izakhiwo zomzimba | - Amandla aphezulu nokumelana nokugqoka | - nokunwebeka okuhle nokuthambile |
| - Excellent ukuguga ukumelana | - Ukusebenza kahle kokugoba ekushiseni okuphansi | |
| - Amafutha amahle kanye nokumelana ne-solvent | - Ifanele imikhiqizo enezimo eziyinkimbinkimbi | |
| Ukuvikelwa kwemvelo nokuphepha | okuqukethwe kwe-isocyanate okuphansi | okuqukethwe okuphezulu kwe-isocyanate |
| Izindleko zokukhiqiza | izindleko eziphezulu | izindleko eziphansi |
| Inkambu yohlelo lokusebenza | - Umkhiqizi wezimoto | - ifenisha nomatilasi |
| - Ezemidlalo Equipment | - Ukukhiqiza izicathulo | |
| - Imikhiqizo yezimboni | - Packaging Materials |
Njengoba kubonakala kuleli tafula elingenhla, ama-elastomers ohlelo lwe-polyurethane MDI anamandla amakhulu, ukumelana nokuguga nokumelana nowoyela, futhi afaneleka ukusetshenziswa ekukhiqizeni izimoto, imishini yezemidlalo kanye nemikhiqizo yezimboni.Ngakolunye uhlangothi, i-polyurethane TDI system elastomers inokunwebeka okuhle, ukuguquguquka kanye nezindawo zokugoba ezisezingeni eliphansi, futhi ilungele ukusetshenziswa ezindaweni ezifana nefenisha nomatilasi, ukukhiqizwa kwezicathulo nezinto zokupakisha.
Kuyafaneleka futhi ukuqaphela ukuthi uhlelo lwe-MDI lubiza kakhulu ukukhiqiza, kodwa lunikeza ukuvikelwa okungcono kwemvelo nokuphepha.Ngokuphambene, uhlelo lwe-TDI lunezindleko eziphansi zokukhiqiza kodwa okuqukethwe kwe-isocyanate okuphezulu futhi aluhambisani nemvelo kancane kunohlelo lwe-MDI.Ngakho-ke, lapho kukhethwa uhlelo lwe-polyurethane, abakhiqizi kufanele bacabangele ukusebenza komkhiqizo, izidingo zemvelo kanye nemikhawulo yesabelomali ukuze kuthuthukiswe uhlelo lokukhiqiza olufaneleka kakhulu ukuhlangabezana nezidingo zezinhlelo zokusebenza ezahlukene.
IV.Izinketho Zohlelo Nezincomo
Ukukhetha uhlelo olufanele lwezinhlelo zokusebenza ezahlukene: Ngokucabangela izidingo zomkhiqizo kanye nezici zendawo yesicelo, ukukhetha ama-elastomer anezinhlelo ze-MDI noma ze-TDI kuqinisekisa ukusebenza okungcono kakhulu kanye nokusebenza kahle kwezindleko.
Ukuthathwa kwezinqumo maqondana nokusebenza komkhiqizo kanye nesabelomali: lapho kukhethwa uhlelo, ukusebenza komkhiqizo, izidingo zemvelo kanye nemikhawulo yesabelomali kuyabhekwa ukuze kuthuthukiswe isisombululo sokukhiqiza esifanele kakhulu.
Isiphetho:
I-polyurethane MDI kanye ne-TDI system elastomers ngayinye inezinzuzo zayo futhi ifanele izidingo zomkhiqizo ezindaweni ezahlukene.Ukuqonda umehluko kuzosiza abakhiqizi ukuthi benze izinqumo ezinolwazi ukuze baqinisekise ukuthi imikhiqizo yabo isebenza kahle ezinhlelweni ezithile.
Isikhathi sokuthumela: Aug-01-2023