Kodi pali kusiyana kotani pakati pa tpu ndi pu?

Kusiyana pakati panjiTPundi pu?

TPU (poureurethane elastomer)

Tpu (thermoplastic poulmune elastomer)ndi ma pulasitiki akutuluka. Chifukwa cha kusachita bwino kwabwino, kukana nyengo, TPU imagwiritsidwa ntchito kwambiri m'mafakitale ofananira monga nsapato, mafilimu, mafinya.

Polyurethane thermoplastic elastorcer, omwe amadziwikanso kuti polmoplastic polyurethane rabara, mwachidule ngati TPU, ndi mtundu wa (AB) n-block mzere polymer polymer. Kulemera kwambiri kwa overcular (1000-6000) polyesterter kapena polyteter, ndipo b ndi dipo lokhala ndi ma atomu owongoka kaboni. Kapangidwe ka mankhwala pakati pa magawo a mankhusu ndi diisocngate, nthawi zambiri amalumikizidwa ndi MDI.

Thermoplastic mururene limadalira kulumikizana ndi ma hydrogen olumikizirana kapena ofatsa olumikizana pakati pa macromilecular unyolo, ndipo makina awiri olumikizana ndi olumikizidwawo amasintha kapena kuchepa kutentha. Mu wosungunula kapena yankho, magulu agulu aintpolecular amafooka, ndipo pambuyo pozizira kapena zosungunulira, mphamvu zazikuluzikulu zolumikizira pamodzi, kubwezeretsanso katundu wa cholimba.

Polyurethane elastomersItha kulembedwa mumitundu iwiri: Polysterter ndi Polyther, wokhala ndi ma ceroctical obiriwira kapena ma cell komanso kuchuluka kwa 1.10-1.25. Mtundu wa Polyther ali ndi kachulukidwe kakang'ono kuposa mtundu wa polyester. Kutentha kwagalasi Kusintha kwa Mtundu wa Polytherr ndi 100.6-106.1 ℃, ndipo mtundu wa mtundu wa polyer ndi 108.9-122.8 ℃. Kutentha kwa Bribettess ku Polythetter mtundu wa polyther ndi wotsika kuposa -62 ℃, pomwe kutentha kochepa kukana mtundu wa etherry ndikwabwino kuposa mtundu wa polyester.

Makhalidwe abwino a polmoplane a thermoplactirs elastomers ndibwino kuvala, kukana kwabwino kwambiri, kulimba mtima kwambiri, kupsinjika kwamphamvu, kukana kwa madzi, komanso kukana kwa mankhwala. Madera achinyontho, kukhazikika kwa hydrolys kwa polyter zoposa zamitundu ya poyester.

Ma polmurethane a thermoplastic elastomers sikuti ndi poizoni ndi fungo lopanda ma solyl etheene, cytrahylfermormin, ndi a nthochi, ndi acenone, ndi acetone moyenera. Amawonetsa mtundu wopanda utoto komanso wowonekeratu ndikukhala ndi bata yabwino yosungirako.