Aliphatic TPU kugadzirisa dambudziko reyero re ETPU bhutsu soles
ETPU rudzi rwe TPU zvinhu inoumbwa nekupupa kwepamusoro. Nekuti kutaridzika kwayo kwakafanana nemapopcorn, iyo midsole yakagadzirwa ETPU inonzi popcorn midsole. Iyo ine yakanakisa kusimba, yakanyanya kuderera compression yekusingaperi deformation, yakanaka yekupfeka ruzivo, uye yakatenderedza hushamwari uye inoshanda kugadzirisa.
Adidas ndiyo yekutanga mhando yemitambo kushandisa popcorn midsole, uye yayo Boost nhevedzano shangu dzaimbozivikanwa pamusika. Nekuda kwekuita kwakanakisa kwe ETPU midsole, mhando dzakawanda dzemitambo dzakazvigamuchira mune shangu dzemitambo.
Zvisinei, nekufamba kwenguva, vanhu vakaona kuti chena ETPU midsole inoshanduka yero mushure mekupfeka kwenguva refu, uye irwo rudzi rusingagone kucheneswa, runokanganisa chiitiko chekupfeka kusvika pamwero wakati.
Nei iyo ETPU midsole inoshanduka yero mushure mekupfeka kwenguva refu? Izvi zvine chekuita nechimiro chemolecular ye TPU.
TPU ndiyo chidimbu che thermoplastic polyurethanes, inova multiphase block copolymer inoumbwa ne diisocyanate, chain extender, uye polyol. Zvichienderana nerudzi rwe diisocyanate, TPU inonyanya kukamurwa kuita zvinonhuhwirira TPU uye aliphatic TPU, uye mutsauko wekuita pakati pezviviri izvi zvinonyanya kutariswa mukupikisa kutsvuka.
- The common component of aromatics TPU: diphenylmethane diisocyanate (MDI)
- Chinhu chakajairika che aliphatic TPU Hexamethylene diisocyanate (HDI)
Zvizhinji zve TPU inoshandiswa muhupenyu hwezuva nezuva inonhuhwirira TPU, iyo inowanzoita yero nekuda kwechimiro chebenzene mhete paMDI, sezvinoratidzwa pamufananidzo uri pazasi.
MDI ine methylene bhiriji pakati pemapoka maviri ephenyl, uye iyi methylene inogadziriswa nyore nyore munzvimbo ye ultraviolet chiedza, nokudaro ichirasikirwa nehydrogen pabhiriji remethylene, sezvakaratidzwa mumufananidzo uri pasi apa.
Iyi kemikari inogadzirisa inoumba conjugated system pakati pezvindori zviviri zvinonhuhwirira, zvinonzi quinoid imine. Kunyangwe iyi oxidation reaction ine zvishoma mhedzisiro pane zvemuviri zvimiro zve TPU, inogona kukonzera isingachinjiki yellowing ye TPU.
kubva ETPU inogadzirwa nekupupa nekunhuhwirira kwakajairika TPU, yellowing haidzivisiki. Nzira yekugadzirisa sei dambudziko iri? Kushandisa aliphatic TPU inzira yakanaka.
Aliphatic TPU, inozivikanwawo sekuti isiri-kunhuhwirira TPU, sezvinoratidzwa mumufananidzo uri pasi apa, ine mutsara wakarongeka we diisocyanate ester molecule. Kuenzaniswa nekunhuhwirira TPU, kupikisa kwayo kune yellowing kunovandudzwa zvikuru.
Aliphatic TPU ine huwandu hwakasiyana hwekuoma, uye seyakajairika TPU, kutora 40D uye 45D semienzaniso, mushure mekuputika, dzinoenderana ne45C uye 50C midsoles, zvichiteerana, nehunhu hwakaita senge yakaderera density, yakanaka elasticity, yakanakisa kuramba kutsvuka, uye yakanakisa kubvarura kuramba.
