Polyester chikamu chepolymersizvo zvineester boka rinoshandamuchikamu chega chega chekudzokorora chetani yavo huru.Sekutaura chaikozvinhu, rinowanzoreva mhando inonzipolyethylene terephthalate(PET).Polyesters inosanganisira makemikari anongoitika, akadai semuzvinomerauyezvipembenene, pamwe chete nemishonga yakadai sepolybutyrate.Natural polyesters uye mashoma ekugadzira aribiodegradable, asi mapolyester akawanda ekugadzira haasi.Synthetic polyesters inoshandiswa zvakanyanya muzvipfeko.
Mafiibha epolyester dzimwe nguva anorukwa pamwe chete neshinda dzemusikirwo kugadzira ajiraine blended properties.Cotton-polyester blends inogona kuva yakasimba, wrinkles- uye inodzivisa kubvarura, uye kuderedza kuderera.Synthetic fiberskushandisa polyester vane mvura yakakwira, mhepo uye kudzivirira kwezvakatipoteredza zvichienzaniswa nezvinomera-zvakagadzirwa fibers.Ivo vashomaisingadziviriri motouye inogona kunyungudika kana yabatidzwa.
Liquid crystalline polyesters ari pakati pekutanga kushandiswa mumaindasitiriliquid crystal polymers.Iyo inoshandiswa kune yavo mechanical properties uye kupisa-kudzivisa.Aya hunhu akakosha zvakare mukushandisa kwawo sechisimbiso chinoputika mumajini ejeti.
Polyester inoitika mune zvakasikwa inosanganisira iyocutinchikamu cheplant cuticles, iyo inosanganisiraomega hydroxy acidsuye zvinobva kwavari, zvakabatanidzwa kuburikidzaesterzvisungo, kugadzira polyester mapolima ehukuru husingaverengeki.Polyesters inogadzirwawo nenyuchimu genusColletes, izvo secrete acellophane-kufanana nepolyester yekugadzira masero avo epasi pevhu achivapa zita remadunhurirwa rekuti "polyester nyuchi".
Zvichienderana nechimiro chemakemikari, polyester inogona kuva athermoplastickanathermoset.Kune zvakarepolyester resinskurapwa nehardeners;zvisinei, mapolyester akajairika ndeye thermoplastics.[11]Boka reOH rinoitwa neIsocyanateinoshanda musanganiswa mu 2 component system inogadzira machira anogona kuve ane pigmented.Polyesters se thermoplastics inogona kuchinja chimiro mushure mekushandiswa kwekupisa.Kunyange zvazvo ichibvira pakupisa kwepamusoro, mapolyester anowanzoita kuderera kubva mumoto uye anozvidzima paanobatidza.Polyester fibers ane yakakwiriratenacityuyeE-moduluspamwe chete nekunyura kwemvura yakaderera uye kushomashrinkagemukuenzanisa nemamwe maindasitiri fibers.
Kuwedzera zvikamu zvinonhuhwirira zvepolyester zvinowedzera zvavogirazi shanduko yekushisa, tembiricha yekunyungudika,kugadzikana kwekupisa, kugadzikana kwemakemikari, uye kusagadzikana kwekugadzirisa.
Polyesters inogonawo kuvatelechelic oligomersse polycaprolactone diol (PCL) uye polyethylene adipate diol (PEA).Vanobva vashandiswa seprepolymers.
Nguva yekutumira: Zvita-06-2022