Polyester rukuni ne napolymerswanda ya ƙunshiester ƙungiya mai aikia kowace raka'a maimaituwa ta babban sarkar su.A matsayin takamaimanabu, yawanci yana nufin nau'in da ake kirapolyethylene terephthalate(PET).Polyesters sun haɗa da sinadarai na halitta, kamar a cikitsire-tsirekumakwari, da kuma roba irin supolybutyrate.Polyesters na halitta da ƴan roba nebiodegradable, amma mafi yawan roba polyesters ba.Ana amfani da polyesters na roba da yawa a cikin tufafi.
Zaɓuɓɓukan polyester wani lokaci ana jujjuya su tare da filaye na halitta don samar da azanetare da kaddarorin da aka haɗa.Auduga-haɗe-haɗe-haɗe-haɗe na polyester na iya zama mai ƙarfi, ƙyalli- da juriya, da rage raguwa.Zaruruwan robata yin amfani da polyester suna da babban ruwa, iska da juriya na muhalli idan aka kwatanta da filaye da aka samu daga shuka.Sun yi kasamai jure wutakuma yana iya narkewa idan an kunna wuta.
Liquid crystalline polyesters suna cikin na farko da aka yi amfani da su a masana'anturuwa crystal polymers.Ana amfani da su don kayan aikin injiniya da juriya na zafi.Waɗannan halayen kuma suna da mahimmanci a aikace-aikacen su azaman hatimi mai yuwuwa a cikin injunan jet.
Polyesters da ke faruwa a yanayi sun haɗa dacutinbangaren nacuticles shuka, wanda ya kunshiomega hydroxy acidda abubuwan da suka samo asali, masu alaƙa ta hanyarestershaidu, kafa polyester polymers na indeterminate size.Ana kuma samar da polyesters ta hanyarƙudan zumaa cikin jinsiƘungiyoyi, wanda ke boye acellophane-kamar rufin polyester don ƙwayoyin jikinsu na ƙarƙashin ƙasa wanda ke samun su da laƙabi "ƙudan zuma polyester".
Dangane da tsarin sinadarai, polyester na iya zama athermoplastickothermoset.Akwai kumapolyester resinswarkar da taurin;duk da haka, mafi yawan polyesters sune thermoplastics.[11]An mayar da martani ga ƙungiyar OH tare da waniIsocyanatefili mai aiki a cikin tsarin ɓangarori guda 2 waɗanda ke samar da sutura waɗanda ba za a iya canza su ba.Polyesters a matsayin thermoplastics na iya canza siffar bayan aikace-aikacen zafi.Yayin da ake konewa a yanayin zafi mai zafi, polyesters kan yi nisa daga harshen wuta kuma suna kashe kansu akan kunnawa.Abubuwan polyester suna da girmatsayin dakakumaE-modulhaka kuma karancin sha ruwa da kadanraguwaa kwatanta da sauran masana'antu zaruruwa.
Ƙara kayan ƙanshi na polyesters yana ƙaruwagilashin canji zafin jiki, narkewar zafin jiki,thermal kwanciyar hankali, sinadaran kwanciyar hankali, da juriya mai ƙarfi.
Polyesters kuma na iya zamatelechelic oligomersKamar polycaprolactone diol (PCL) da kuma polyethylene adipate diol (PEA).Ana amfani da su azamanprepolymers.
Lokacin aikawa: Dec-06-2022