Umehluko Phakathi kwe-TPU Nerabha

I-TPU (Thermoplastic polyurethanes) iyinto ephakathi kwerabha nepulasitiki.Izinto ezisetshenziswayo azikwazi ukumelana nowoyela namanzi futhi zinokuthwala kahle kakhulu futhi zikwazi ukumelana nomthelela.I-TPU iyimpahla ye-polymer engenabuthi evumelana nemvelo.Izinto ze-Tpu zinezinzuzo zokunwebeka okuphezulu kwerabha nokusebenza kokucubungula kwepulasitiki.Ayidingi i-vulcanization futhi ingacutshungulwa ngemishini ejwayelekile yokubumba ye-thermoplastic.Kalula nje, i-thermoplastic elastomer tpu i-thermoformed futhi ingakhiqizwa kusetshenziswa imishini yokubumba umjovo, ama-extruder, imishini yokubumba i-blow.Izinsalela nezinsalela zingaphinda zigaywe kabusha ngo-100%, izinto ezingavuthiwe ongakhetha kuzo esikhundleni se-PVC, irabha ne-silicone futhi zibusa imboni yenjoloba nepulasitiki.

Irabha: Irabha i-polymer ephilayo enesisindo samangqamuzana angamakhulu ezinkulungwane.Ukwelashwa kwe-Vulcanization kuyadingeka ukuze kugcinwe ukunwebeka okuphezulu ebangeni lokushisa elingu-50 kuya ku-150 °C.I-modulus ephansi enwebekayo, ama-oda ama-3 obukhulu aphansi kunezinto ezijwayelekile, ukuwohloka okukhulu, ukuphakama kungafinyelela ku-1000% (izinto ezijwayelekile zingaphansi kwe-1%), ukushisa kukhishwa ngesikhathi senqubo yokwelula, futhi ukunwebeka kukhuphuka ngokushisa, okubuye kube phansi. kunaleyo yezinto ezijwayelekile ngokuphambene nalokho.

Umehluko phakathi kwe-TPU nerabha:

1. Irabha ithambile uma kuqhathaniswa, futhi ububanzi bokuqina (0-100a) bezinto ze-tpu bubanzi kakhulu phakathi kwerabha nepulasitiki;

2. Umqondo we-elastomer ubanzi kakhulu, i-tpu ibizwa nangokuthi irabha ye-thermoplastic (tpr), futhi irabha ngokuvamile ibhekisela ku-rubber thermosetting;

3. Izindlela zokucubungula zihlukile.Irabha icutshungulwa ngokuxuba irabha, kuyilapho i-TPU ivame ukucutshungulwa nge-extrusion;

4. Izakhiwo zihlukile.Irabha ngokuvamile idinga ukwengeza izithasiselo ezihlukahlukene futhi idinga ukufakwa vulcanized ukuze iqiniswe, kuyilapho ukusebenza kwe-tpu kwama-thermoplastic elastomers kuhle kakhulu;

5. I-thermoplastic elastomer tpu inokwakheka komugqa futhi ngokomzimba ixhumene ngokuxhumanisa nge-hydrogen bonding.Amabhondi e-hydrogen aphuka emazingeni okushisa aphezulu futhi ayipulasitiki.Irabha ixhumene ngamakhemikhali hhayi i-thermoplastic.

6. Impahla yepulasitiki ye-TPU inokumelana okuhle kakhulu nokugqokwa, okungaphezu kokuphindwe kahlanu kwerabha yemvelo, futhi ingenye yezinto ezikhethwayo zemikhiqizo engagugi.