Kusiyana pakati pa TPU polyester ndi polyether, ndi ubale pakati pa polycaprolactone ndi TPU

Kusiyana pakati pa TPU polyester ndi polyether, ndi ubale pakatipolycaprolactone TPU

Choyamba, kusiyana pakati pa TPU polyester ndi polyether

Thermoplastic polyurethane (TPU) ndi mtundu wa zida zapamwamba za elastomer, zomwe zimagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana. Malinga ndi kapangidwe kake kofewa, TPU ikhoza kugawidwa mumtundu wa polyester ndi polyether. Pali kusiyana kwakukulu pakuchita ndi kugwiritsa ntchito pakati pa mitundu iwiriyi.

Polyester TPU ili ndi mphamvu zambiri komanso kukana kuvala, zinthu zolimba, zopindika komanso kukana zosungunulira ndizabwino kwambiri. Kuphatikiza apo, ili ndi kukana kwabwino kwa kutentha kwapamwamba ndipo ndiyoyenera kugwiritsidwa ntchito m'malo otentha kwambiri. Komabe, kukana kwa hydrolysis kwa polyester TPU ndikocheperako, ndipo ndikosavuta kugwidwa ndi mamolekyu amadzi ndikusweka.

Motsutsana,polyether TPUamadziwika chifukwa cha mphamvu zake zazikulu, kukana kwa hydrolysis komanso kulimba mtima kwambiri. Kutentha kwake kochepa kumakhalanso kwabwino kwambiri, koyenera kugwiritsidwa ntchito kumalo ozizira. Komabe, mphamvu ya peel ndi mphamvu yosweka ya polyether TPU ndizofooka, ndipo kulimba, kutha, kung'ambika kwa polyether TPU nakonso ndikotsika poyerekeza ndi polyester TPU.

Chachiwiri, polycaprolactone TPU

Polycaprolactone (PCL) ndi zinthu zapadera za polima, pomwe TPU ndiyofupika ku thermoplastic polyurethane. Ngakhale onse ndi zida za polima, polycaprolactone yokha si TPU. Komabe, popanga TPU, polycaprolactone itha kugwiritsidwa ntchito ngati gawo lofewa lofunikira kuti ligwirizane ndi isocyanate kuti lipange ma elastomer a TPU okhala ndi zinthu zabwino kwambiri.

Chachitatu, mgwirizano pakati pa polycaprolactone ndiTPU masterbatch

Masterbatch imagwira ntchito yofunika kwambiri popanga TPU. Masterbatch ndi prepolymer yapamwamba kwambiri, yomwe nthawi zambiri imakhala ndi zinthu zosiyanasiyana monga polima, plasticizer, stabilizer, ndi zina zotero.

Monga zida zapamwamba za polima, polycaprolactone imagwiritsidwa ntchito ngati gawo lofunikira la TPU masterbatch. Ndi prepolymerization wa polycaprolactone ndi zigawo zina, TPU mankhwala ndi katundu kwambiri makina, kukana hydrolysis ndi otsika kutentha kukana akhoza kukonzekera. Zogulitsazi zimakhala ndi chiyembekezo chochuluka chogwiritsira ntchito pazovala zosaoneka, zipangizo zamankhwala, nsapato zamasewera ndi zina zotero.

Chachinayi, mawonekedwe ndi ntchito za polycaprolactone TPU

Polycaprolactone TPU imaganizira za ubwino wa polyester ndi polyether TPU, ndipo ili ndi katundu wabwino kwambiri. Sikuti ali ndi mphamvu zamakina apamwamba komanso kukana kuvala, komanso amawonetsa kukana bwino kwa hydrolysis komanso kukana kutentha kochepa. Izi zimapangitsa TPU ya polycaprolactone kukhala ndi moyo wautali wautumiki komanso kukhazikika m'malo ovuta komanso osinthika.

Pankhani ya zovala zosaoneka, polycaprolactone TPU yakhala chinthu chokondedwa chifukwa chazinthu zake zabwino kwambiri. Itha kukana kukokoloka kwa zinthu zakunja monga mvula ya asidi, fumbi, zitosi za mbalame, ndikuwonetsetsa magwiridwe antchito ndi moyo wa zovala zamagalimoto. Kuphatikiza apo, pankhani ya zida zamankhwala, zida zamasewera, ndi zina zambiri, TPU ya polycaprolactone yalandilanso chidwi chofala chifukwa chachitetezo chake komanso kudalirika.

Mwachidule, pali kusiyana kwakukulu pakati pa TPU poliyesitala ndi poliyesi pa ntchito ndi ntchito, pamene polycaprolactone, monga mbali yofunika ya TPU, amapereka TPU katundu kwambiri mabuku katundu. Pomvetsetsa mozama maubwenzi ndi mawonekedwe pakati pa zidazi, titha kusankha bwino ndikugwiritsa ntchito zinthu zoyenera za TPU kuti tikwaniritse zosowa za magawo osiyanasiyana.