Mfundo yaikulu yosankhira zinthu za TPU kuti zigwire bwino ntchitoPPFNdi kusankha Aliphatic TPU. Izi zimatsimikizira kukana kwachikasu kwa filimuyi, kulimba kwake, komanso magwiridwe antchito ake onse - iyi ndiye kusiyana kwakukulu kuchokera ku aromatic TPU.
Aliphatic vs. Aromatic: "Lamulo la Golide" la Kusankha Zinthu
Mfundo yoyamba ndi iyi: Sankhani Aliphatic TPU, pewani Aromatic TPU. Zonsezi zimakhala ndi zigawo zolimba ndi zofewa, koma mtundu wa diisocyanate mu gawo lolimba umapangitsa kusiyana kwakukulu kwaMapulogalamu a PPF.
| Kuyerekeza | Aliphatic TPU Yolimbikitsidwa | TPU Yonunkhira Siyovomerezeka |
|---|---|---|
| Kapangidwe ka Mankhwala | Mulibe mphete za benzene zomwe zimasungunuka mosavuta; zimakhala zokhazikika pa mankhwala. | Lili ndi mphete za benzene zomwe zimasungunuka mosavuta zikakhudzidwa ndi UV. |
| Kukana Kwachikasu | Zabwino kwambiri. Zabwino kwambiri kuposa zonunkhiritsa; ΔYI yochepa kwambiri mutatha kukhudzidwa ndi UV kwa maola 3000. | Zoipa kwambiri. Zimasintha mwachangu chikasu pansi pa UV, nthawi zambiri zimaonekera chikasu mkati mwa miyezi 6-12. |
| Kukana kwa Nyengo | Yapamwamba. Yolimba kwa nthawi yayitali ku UV, kutentha kwambiri, komanso chinyezi. | Wosauka. Amatha kukalamba komanso kuoneka ngati akutuluka panja. |
| Mapulogalamu Oyambirira | PPF yapamwamba kwambiri, ndege, zamankhwala, ndi zina zotero. | Nsapato, katundu wa mafakitale, mafilimu amkati komwe kusakhala ndi vuto la nyengo sikofunikira. |
| Mtengo | Zapamwamba. 30-50% yokwera mtengo kuposa aromatic. | Pansi. |
Mwachidule: Kuti muwonetsetse kuti zinthu zikuyenda bwino kwa nthawi yayitali komanso kuti palibe chikasu, muyenera kusankha Aliphatic TPU.
Kusankha Gawo Lofewa la AliphaticTPUYang'anani pa Polycaprolactone
Mu TPU ya aliphatic, mtundu wa polyol (gawo lofewa) umatsimikizanso mphamvu yakuthupi ndi kulimba.
| Mtundu wa TPU (Gawo Lofewa) | Zinthu Zazikulu & Ubwino | Zoyipa Zazikulu / Zolepheretsa | Kuyenerera kwa PPF |
|---|---|---|---|
| Polycaprolactone | Champhamvu kwambiri. Chimaphatikiza kukana kwamphamvu komanso kukana kukanda (monga polyester) ndi kukana kwabwino kwambiri kwa hydrolysis (monga polyether). | Mtengo wokwera; nthawi zambiri amagwiritsidwa ntchito pazinthu zapamwamba kwambiri. | (Zokondedwa). Chisankho chabwino kwambiri cha makampani otsogola a PPF, chokhazikika pa kulimba kwa nthawi yayitali komanso chitetezo chapamwamba. |
| Polycarbonate | Kuteteza bwino nyengo, mphamvu yabwino komanso kukana hydrolysis. | Mtengo wokwera kwambiri; zimangogwiritsidwa ntchito pazinthu zina zomwe zimafuna kwambiri nyengo. | (Zabwino Kwambiri). Kuchita bwino kwambiri, koma mtengo wake umalepheretsa kugwiritsidwa ntchito kwambiri. |
| Polyether | Chimateteza ku hydrolysis. Chimasunga bwino malo ake m'malo ozizira komanso amvula. | Mphamvu ya makina yofooka - kukana kung'ambika/kubowoka kochepa poyerekeza ndi polyester. | (Ubwino wake). Ndi yabwino kwambiri pamagalimoto omwe ali ndi nyengo yonyowa/yonyowa nthawi zonse. |
| Polyester | Mfumu ya mphamvu zakuthupi. Mphamvu yabwino kwambiri yokoka, kukana kukwawa, mphamvu yong'ambika. | Kukana kwa hydrolysis koipa. Ma Ester links amawonongeka munyengo yonyowa, zomwe zimapangitsa kuti pakhale kusweka ndi kusweka pakapita nthawi. | (Sikovomerezeka). Ngakhale kuti poyamba inali ndi mphamvu zambiri, kukana kwa hydrolysis kochepa ndi vuto lalikulu kwa PPF. |
Malangizo Osankha:
- Chisankho chabwino kwambiri: Aliphatic + Polycaprolactone TPU. Imaonedwa ngati "kuphatikiza kwagolide" kwa PPF yapamwamba kwambiri, kupereka chitetezo chabwino kwambiri komanso kulimba kwa nthawi yayitali.
- Yoyang'ana chilengedwe: Kwa magalimoto omwe ali m'madera omwe nthawi zonse amakhala onyowa/onyowa, polyether imapereka kukana kwabwino kwa hydrolysis.
- Chenjerani: Ma PPF ena otsika mtengo amagwiritsabe ntchito aromatic + polyester TPU. Ngakhale kuti ndi otsika mtengo, ali ndi chiopsezo chachikulu cha chikasu ndi hydrolysis - sizikulimbikitsidwa.
Nthawi yotumizira: Epulo-15-2026