Polyester imhando yemaporimaizvo zvineester boka rinoshandamuchikamu chimwe nechimwe chinodzokororwa cheketani yavo huru. Sechinhu chaichozvinhu, rinowanzoreva rudzi runonzipolyethylene terephthalate(PET). Mapolyester anosanganisira makemikari anowanikwa muchisikigo, akadai seari muzvirimwauyezvipembenene, pamwe chete nezvinhu zvakagadzirwa nemakemikari zvakaita sepolybutyrateMapolyester echisikigo nemamwe mashoma ekugadzira zvinhukuora, asi akawanda mapolyester ekugadzira haasi. Mapolyester ekugadzira anoshandiswa zvakanyanya muzvipfeko.
Matayi epolyester dzimwe nguva anorukwa pamwe chete neshinda dzechisikigo kuti agadzirejiraine zvinhu zvakasanganiswa.Donje- misanganiswa yepolyester inogona kuva yakasimba, inodzivirira makwinya uye kubvaruka, uye inoderedza kudzikira.Mashinda ekugadziraKushandisa polyester kunodzivirira zvakanyanya mvura, mhepo uye zvakatipoteredza zvichienzaniswa neshinda dzinobva mumiti.isingatsviuye inogona kunyunguduka kana yapiswa.
Mapolyester emvura inopenya ari pakati pekutanga kushandiswa mumaindasitirimapolymer ekristaro emvuraDzinoshandiswa nekuda kwehunhu hwadzo hwemakanika uye kudzivirira kupisa. Hunhu uhwu hwakakoshawo pakushandiswa kwadzo sechisimbiso chinodzimwa mumainjini ejeti.
Mapolyester anowanikwa muzvisikwa anosanganisiracutinchikamu checuticles yemiti, iyo inoumbwa neomega hydroxy acidsuye zvinobva kwavari, zvakabatana kuburikidzaesterzvisungo, zvichigadzira mapolymer epolyester ane saizi isingazivikanwe. Mapolyester anogadzirwawo nenyuchimumhuriMakorokoto, iyo inoburitsacellophane-kufanana nepolyester lining yemasero avo epasi pevhu anobereka vana zvichivapa zita remadunhurirwa rekuti "nyuchi dzepolyester".
Zvichienderana nechimiro chemakemikari, polyester inogona kuvathermoplastickanathermosetiKunewomasirinji epolyesterinorapwa nemidziyo inoomesa; zvisinei, mapolyester anonyanya kushandiswa ithermoplastics.[11]Boka reOH rinopindurwa neIsocyanatechinhu chinoshanda muhurongwa hwezvikamu zviviri chinoburitsa machira anogona kuiswa ruvara. Mapolyester se thermoplastics anogona kuchinja chimiro mushure mekushandiswa kwekupisa. Kunyange zvazvo achibvira pakupisa kwakanyanya, mapolyester anowanzo dzikama kubva mumoto uye anozvidzima ega kana abvira. Mafiber epolyester ane simba rakawandakushingauyeE-moduluspamwe nekusapinza mvura yakawanda uye kushomakudererazvichienzaniswa nedzimwe shinda dzemaindasitiri.
Kuwedzera kunhuhwirira kwezvikamu zvepolyester kunowedzera kunhuhwirira kwavotembiricha yekuchinja kwegirazi, tembiricha yekunyunguduka,kugadzikana kwekupisa, kugadzikana kwemakemikari, uye kuramba zvinonyungudutsa.
Mapolyester anogonawo kuvatelechelic oligomersse polycaprolactone diol (PCL) uye polyethylene adipate diol (PEA). Zvinozoshandiswa seprepolymers.
Nguva yekutumira: Zvita-06-2022