Umgaqo ophambili wokukhetha izixhobo zeTPU ukuze zisebenze kakuhleI-PPFkukukhetha i-Aliphatic TPU. Ngokusisiseko imisela ukumelana kwefilimu nokuba tyheli, ukuqina kwayo, kunye nokusebenza kwayo ngokubanzi – lo ngumahluko obalulekileyo kwi-aromatic TPU.
I-Aliphatic vs. Aromatic: "Umthetho weGolide" woKhetho lwezinto
Umgaqo wokuqala ngulo: Khetha i-Aliphatic TPU, phepha i-Aromatic TPU. Zombini zenziwe ngamacandelo aqinileyo nathambileyo, kodwa uhlobo lwe-diisocyanate kwicandelo eliqinileyo lwenza umahluko omkhulu kwiIzicelo ze-PPF.
| Uthelekiso | I-TPU ye-Aliphatic ecetyiswayo | I-TPU enuka kamnandi ayikhuthazwa |
|---|---|---|
| Ulwakhiwo lweKhemikhali | Ayinazo izangqa ze-benzene ezicolisiswa lula; izinzile ngokweekhemikhali. | Iqulethe izangqa ze-benzene ezikhawuleza zinyibilike xa zichatshazelwe yi-UV. |
| Ukumelana nokutyheli | Igqwesile. Ingcono ngokuphindwe kahlanu kunevumba elimnandi; i-ΔYI encinci emva kokuvezwa yi-UV iiyure ezingama-3000. | Imbi kakhulu. Ijika ibe tyheli ngokukhawuleza phantsi kwe-UV, idla ngokubonakala ngathi ityheli kwiinyanga ezi-6-12. |
| Ukumelana nemozulu | Ingcono. Imelana ne-UV ixesha elide, ubushushu obuphezulu, kunye nokufuma. | Ayilunganga. Iyakwazi ukwaluphala kwaye idlakadlaka ngaphandle. |
| Izicelo eziphambili | I-PPF ephezulu, i-aerospace, ezonyango, njl. | Izihlangu, iimpahla zoshishino, iifilimu zangaphakathi apho imozulu ingangeni kakhulu khona. |
| Ixabiso | Iphezulu. Ixabisa ngaphezulu ngama-30-50% kune-aromatic. | Ezantsi. |
Ngamafutshane: Ukuqinisekisa ukuba icacile ixesha elide kwaye akukho tyheli, kufuneka ukhethe i-Aliphatic TPU.
Ukukhethwa kweCandelo elithambileyo le-AliphaticI-TPUGxila kwiPolycaprolactone
Ngaphakathi kwe-TPU ye-aliphatic, uhlobo lwe-polyol (icandelo elithambileyo) lumisela ngakumbi amandla omzimba kunye nokuqina.
| Uhlobo lwe-TPU (Icandelo elithambileyo) | Iimpawu eziphambili kunye neenzuzo | Iingxaki eziphambili / Imida | Ukufaneleka kwe-PPF |
|---|---|---|---|
| I-Polycaprolactone | Intshatsheli epheleleyo. Idibanisa amandla aphezulu kunye nokumelana nokukrala (njenge-polyester) kunye nokumelana okuhle kakhulu kwe-hydrolysis (njenge-polyether). | Ixabiso liphezulu; lidla ngokusetyenziswa kwiimveliso eziphambili ze-flagship. | (Ekhethwayo). Olu khetho luphezulu lweempawu eziphambili ze-PPF, olulungelelanisa ukuqina kwexesha elide kunye nokhuseleko oluphezulu. |
| I-Polycarbonate | Ukumelana nemozulu okugqwesileyo, amandla alungileyo kunye nokumelana ne-hydrolysis. | Ixabiso liphezulu kakhulu; lilinganiselwe kwizicelo ezithile ezifuna kakhulu imozulu embi. | (Igqwesile). Ukusebenza kakuhle, kodwa iindleko zithintela ukusetyenziswa ngokubanzi. |
| I-Polyether | Ingumpetha wokumelana ne-hydrolysis. Igcina iipropati kakuhle kakhulu kwiindawo ezifumileyo nezinemvula. | Amandla oomatshini abuthathaka – ukumelana nokukrazuka/ukubhoboza kuphantsi kancinci kune-polyester. | (Inzuzo yemeko). Ilungele izithuthi ezikwimozulu emanzi/efumileyo rhoqo. |
| I-Polyester | Ukumkani wamandla omzimba. Amandla agqwesileyo okuxinana, ukumelana nokukrweleka, amandla okukrazula. | Ukumelana ne-hydrolysis okungekho semgangathweni. Unxibelelwano lwe-Ester luyawohloka kwiimeko ezimanzi, nto leyo enokubangela ukuba i-brittleness kunye ne-crackles ziqhekeke ngokuhamba kwexesha. | (Akukhuthazwa). Nangona amandla okuqala aphezulu, ukunganyangeki kakuhle kwe-hydrolysis yingxaki ebulalayo kwi-PPF. |
Ingcebiso yokukhetha:
- Eyona ndlela ilungileyo: Aliphatic + Polycaprolactone TPU. Ithathwa njenge "indibaniselwano yegolide" ye PPF ephezulu, inika ulungelelwaniso olungcono lokhuseleko kunye nokuqina kwexesha elide.
- Ijolise kwindalo esingqongileyo: Kwizithuthi ezikwimimandla emanzi/enomswakama rhoqo, i-polyether inika ukumelana okuphezulu kwe-hydrolysis.
- Lumka: Ezinye ii-PPF ezingabizi kakhulu zisasebenzisa i-aromatic + polyester TPU. Nangona zibiza kancinci, zinomngcipheko ophezulu wokuba tyheli kwaye zijike zibe yi-hydrolysis - akukhuthazwa.
Ixesha leposi: Epreli-15-2026