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

Kusiyana pakati pa polyester ya TPU ndi polyether, ndi ubale pakati papolycaprolactone TPU

Choyamba, kusiyana pakati pa polyester ya TPU ndi polyether

Polyurethane ya Thermoplastic (TPU) ndi mtundu wa zinthu zopangidwa ndi elastomer zomwe zimagwira ntchito bwino kwambiri, zomwe zimagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana. Malinga ndi kapangidwe kake kofewa, TPU ikhoza kugawidwa m'magulu awiri: mtundu wa polyester ndi mtundu wa polyether. Pali kusiyana kwakukulu pakugwira ntchito ndi kugwiritsidwa ntchito pakati pa mitundu iwiriyi.

Polyester TPU ili ndi mphamvu zambiri komanso kukana kukalamba, mphamvu zomangika, mphamvu zopindika komanso kukana zosungunulira ndi zabwino kwambiri. Kuphatikiza apo, ili ndi kukana kutentha kwambiri ndipo ndi yoyenera kugwiritsidwa ntchito m'malo otentha kwambiri. Komabe, kukana kwa hydrolysis kwa polyester TPU ndi kochepa, ndipo n'kosavuta kugonjetsedwa ndi mamolekyu amadzi ndi kusweka.

Motsutsana,polyether TPUimadziwika ndi mphamvu zake zambiri, kukana hydrolysis komanso kupirira kwambiri. Mphamvu yake yotsika kutentha nayonso ndi yabwino kwambiri, yoyenera kugwiritsidwa ntchito m'malo ozizira. Komabe, mphamvu ya peel ndi kusweka kwa polyether TPU ndizofooka, ndipo kukana kwa polyether TPU kumachepa, kutopa ndi kusweka ndi kotsika poyerekeza ndi polyester TPU.

Chachiwiri, polycaprolactone TPU

Polycaprolactone (PCL) ndi chinthu chapadera cha polima, pomwe TPU ndi chidule cha polyurethane ya thermoplastic. Ngakhale kuti zonsezi ndi zinthu za polima, polycaprolactone yokha si TPU. Komabe, popanga TPU, polycaprolactone ingagwiritsidwe ntchito ngati gawo lofunika kwambiri la gawo lofewa kuti ligwirizane ndi isocyanate kuti ipange ma elastomer a TPU okhala ndi mawonekedwe abwino kwambiri.

Chachitatu, ubale pakati pa polycaprolactone ndiTPU masterbatch

Masterbatch imagwira ntchito yofunika kwambiri popanga TPU. Masterbatch ndi prepolymer yokhala ndi mphamvu zambiri, nthawi zambiri imakhala ndi zinthu zosiyanasiyana monga polima, pulasitiki, chokhazikika, ndi zina zotero. Pakupanga TPU, masterbatch imatha kuchitapo kanthu ndi unyolo wowonjezera, wothandizira wolumikizirana, ndi zina zotero, kuti ipange zinthu za TPU zokhala ndi mawonekedwe enaake.

Monga polima yogwira ntchito bwino, polycaprolactone nthawi zambiri imagwiritsidwa ntchito ngati gawo lofunikira la TPU masterbatch. Pogwiritsa ntchito prepolymerization ya polycaprolactone ndi zigawo zina, zinthu za TPU zokhala ndi mawonekedwe abwino kwambiri amakina, kukana hydrolysis ndi kukana kutentha pang'ono zitha kukonzedwa. Zogulitsazi zili ndi mitundu yosiyanasiyana ya zinthu zomwe zingagwiritsidwe ntchito m'magawo a zovala zosaoneka, zida zachipatala, nsapato zamasewera ndi zina zotero.

Chachinayi, makhalidwe ndi ntchito za polycaprolactone TPU

Polycaprolactone TPU imaganizira ubwino wa polyester ndi polyether TPU, ndipo ili ndi makhalidwe abwino kwambiri. Sikuti imangokhala ndi mphamvu zambiri zamakaniko komanso kukana kuwonongeka, komanso imasonyeza kukana bwino kwa hydrolysis komanso kukana kutentha kochepa. Izi zimapangitsa polycaprolactone TPU kukhala ndi moyo wautali komanso kukhazikika m'malo ovuta komanso osinthika.

Pankhani ya zovala zosaoneka, polycaprolactone TPU yakhala chinthu chomwe chimakonda kwambiri chifukwa cha makhalidwe ake abwino kwambiri. Imatha kukana kuwonongeka kwa zinthu zakunja monga mvula ya asidi, fumbi, ndowe za mbalame, ndikuwonetsetsa kuti zovala zamagalimoto zikugwira ntchito bwino komanso nthawi yayitali. Kuphatikiza apo, m'magawo azachipatala, zida zamasewera, ndi zina zotero, polycaprolactone TPU yatchukanso kwambiri chifukwa cha chitetezo chake komanso kudalirika kwake.

Mwachidule, pali kusiyana kwakukulu pakati pa polyester ya TPU ndi polyether pakugwira ntchito ndi kugwiritsidwa ntchito, pomwe polycaprolactone, monga chimodzi mwa zinthu zofunika kwambiri za TPU, imapatsa zinthu za TPU mawonekedwe abwino kwambiri. Mwa kumvetsetsa bwino ubale ndi makhalidwe omwe ali pakati pa zipangizozi, titha kusankha bwino ndikugwiritsa ntchito zinthu zoyenera za TPU kuti zikwaniritse zosowa za madera osiyanasiyana.