TPU imapangidwa ndi chiyani? -Kumvetsetsa mozama za thermoplastic polyurethane elastomers
Thermoplastic Polyurethane Elastomer (TPU) ndi zinthu za polima zomwe zimakhala ndi elasticity kwambiri, kukana ma abrasion, mafuta ndi mafuta, komanso anti-kukalamba. Chifukwa cha ntchito zake zapamwamba, TPU imagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, kuchokera ku zipangizo za nsapato, zotetezera zopangira zamagetsi kupita ku zida za mafakitale, TPU ili ndi ntchito zambiri.
Mapangidwe oyambira ndi magulu a TPU
TPU ndi mzere wa block copolymer, wopangidwa ndi magawo awiri: gawo lolimba ndi gawo lofewa. Gawo lolimba nthawi zambiri limapangidwa ndi diisocyanate ndi chain extender, pomwe gawo lofewa limapangidwa ndi polyether kapena polyester diol. Mwa kusintha chiŵerengero cha zigawo zolimba ndi zofewa, zipangizo za TPU zokhala ndi kuuma kosiyana ndi ntchito zimatha kupezeka. Choncho, TPU akhoza kugawidwa m'magulu atatu: poliyesitala TPU, polyether TPU ndi polycarbonate TPU.

Polyester TPU: Ndi kukana mafuta abwino komanso kukana kwa mankhwala, nthawi zambiri amagwiritsidwa ntchito popanga mapaipi amakampani, zosindikizira ndi zida zamagalimoto.
TPU yamtundu wa polyether: Chifukwa cha kukana bwino kwa hydrolysis komanso kutsika kwa kutentha, nthawi zambiri imagwiritsidwa ntchito pazinthu za nsapato, zida zamankhwala ndi mawaya ndi zingwe.
Polycarbonate TPU: kaphatikizidwe ubwino wa poliyesitala ndi poliyesitala TPU, ali bwino kukana ndi kuwonekera, ndipo ndi oyenera mankhwala mandala ndi zofunika kwambiri.

Makhalidwe a TPU ndi maubwino ogwiritsa ntchito
TPU ndiyosiyana ndi zida zina zambiri zomwe zili ndi mawonekedwe ake apadera. Zinthuzi zikuphatikizapo kukana kwakukulu kwa abrasion, mphamvu zamakina kwambiri, kusungunuka bwino komanso transparency.TPU ilinso ndi kukana kwambiri kwa mafuta, zosungunulira ndi kutentha kochepa. Ubwinowu umapangitsa TPU kukhala chinthu choyenera pazinthu zomwe zimafunikira kusinthasintha komanso mphamvu.

Kukana kwa abrasion ndi elasticity: kukana kwamphamvu kwa TPU komanso kukhazikika kwabwino kumapangitsa kuti ikhale chinthu chosankha pazinthu monga nsapato, matayala ndi malamba onyamula.
Kukana kwa Chemical ndi Mafuta: M'mafakitale amankhwala ndi makina, TPU imagwiritsidwa ntchito kwambiri m'magawo monga ma hoses, seals ndi gaskets chifukwa cha kukana kwake kwamafuta ndi zosungunulira.
Kuwonekera kwakukulu: Transparent TPU imagwiritsidwa ntchito kwambiri pazodzitchinjiriza pazinthu zamagetsi ndi zida zamankhwala chifukwa cha mawonekedwe ake owoneka bwino.

Njira yopanga komanso kukhudzidwa kwachilengedwe kwa TPU
Njira yopangira TPU imaphatikizapo kutulutsa, kuumba jekeseni ndi njira zowomba, zomwe zimatsimikizira mawonekedwe ndi magwiridwe antchito a chinthu chomaliza. Kupyolera mu ndondomeko ya extrusion, TPU ikhoza kupangidwa kukhala mafilimu, mbale ndi machubu; kudzera mu njira yopangira jakisoni, TPU imatha kupangidwa kukhala magawo ovuta; kudzera munjira yowomba, imatha kupangidwa kukhala zinthu zosiyanasiyana zopanda kanthu.
Malinga ndi chilengedwe, TPU ndi chinthu chopangidwanso ndi thermoplastic, mosiyana ndi ma elastomer achikhalidwe a thermoset, TPU imatha kusungunuka ndikusinthidwanso ikatenthedwa. Khalidweli limapatsa TPU mwayi wochepetsera zinyalala ndikuchepetsa kutulutsa mpweya. Pakupanga ndi kugwiritsa ntchito, chidwi chiyenera kuperekedwa ku zomwe zingakhudze chilengedwe, monga zotulutsa za volatile organic compound (VOC) zomwe zitha kupangidwa pokonza.
Mawonekedwe a msika wa TPU ndi chitukuko
Pakuchulukirachulukira kwa zida zogwirira ntchito kwambiri, zokomera chilengedwe, mawonekedwe amsika a TPU ndi otakata kwambiri. Makamaka pankhani ya nsapato, zinthu zamagetsi, mafakitale amagalimoto ndi zida zamankhwala, kugwiritsa ntchito TPU kudzakulitsidwanso. M'tsogolomu, ndi chitukuko ndi kugwiritsa ntchito TPU yochokera ku bio-based ndi TPU yowonongeka, ntchito ya chilengedwe ya TPU ikuyembekezeka kupititsa patsogolo.
Mwachidule, TPU ndi zinthu za polima zomwe zili ndi mphamvu komanso mphamvu, ndipo kukana kwake kwa ma abrasion, kukana kwa mankhwala ndi kukonza kwake kumapangitsa kuti zisalowe m'malo m'mafakitale ambiri. Pomvetsetsa "chomwe TPU idapangidwa", titha kumvetsetsa bwino zomwe zitha komanso malangizo a nkhaniyi pakukula kwamtsogolo.