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 lokusebenza 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