Unsaturated polyester resin ndi mtundu wa thermosetting resin womwe umagwiritsidwa ntchito kwambiri, womwe nthawi zambiri umakhala wolumikizana ndi polymer wokhala ndi ma ester bonds ndi ma unsaturated double bonds omwe amapangidwa ndi condensation ya unsaturated dicarboxylic acid ndi ma diols kapena saturated dicarboxylic acid ndi ma unsaturated diols. Nthawi zambiri, polyester condensation reaction imachitika pa 190-220 ℃ mpaka acidity yomwe ikuyembekezeka (kapena viscosity) ifike. Pambuyo poti polyester condensation reaction yatha, vinyl monomer ina imawonjezedwa ikatentha kuti ikonze madzi okhuthala. Yankho la polymer iyi limatchedwa unsaturated polyester resin.
Utomoni wa polyester wosakhuta wapambana kwambiri m'magawo ambiri amafakitale, monga kupanga ma windsurfing ndi ma yacht mu masewera a m'madzi. Polima iyi nthawi zonse yakhala pachimake pa kusintha kwenikweni mumakampani opanga zombo, chifukwa imatha kupereka magwiridwe antchito abwino kwambiri komanso kusinthasintha kwakukulu pakugwiritsa ntchito.
Ma resini a polyester osakhuta amagwiritsidwanso ntchito kwambiri mumakampani opanga magalimoto chifukwa cha kapangidwe kake kosiyanasiyana, kulemera kwake kochepa, mtengo wotsika wa makina, komanso mphamvu yochepa yamakina.
Zipangizozi zimagwiritsidwanso ntchito m'nyumba, makamaka popanga ziwiya zophikira, zitofu, matailosi a padenga, zowonjezera m'bafa, komanso mapaipi ndi matanki amadzi.
Kugwiritsa ntchito utomoni wa polyester wosakhuta kumasiyanasiyana. Utomoni wa polyester kwenikweni ndi umodzi mwa utomoni wokwanira
mankhwala omwe amagwiritsidwa ntchito m'mafakitale osiyanasiyana. Zofunika kwambiri, komanso zomwe zafotokozedwa pamwambapa, ndi izi:
* Zinthu zophatikizika
* Utoto wamatabwa
* Mapanelo athyathyathya, mapanelo okhala ndi makongoletsedwe, mapanelo okhala ndi ribbed
* Chovala cha gel cha maboti, magalimoto ndi zimbudzi
* Ma phala opaka utoto, zodzaza, stucco, ma putty ndi zomangira mankhwala
* Zipangizo zophatikizana zozimitsa zokha
* Quartz, marble ndi simenti yopangira
