Utoto Wapamwamba Wamadzi Wopanda Unsaturated Polyester wa Fiberglass
"Polyester" ndi gulu la ma polima okhala ndi ma ester bond omwe amasiyanitsidwa ndi utomoni monga phenolic ndi epoxy resins. Polima iyi imapangidwa ndi polycondensation reaction pakati pa dibasic acid ndi dibasic mowa, ndipo pamene polima pawiri ili ndi unsaturated awiri chomangira, amatchedwa unsaturated poliyesitala, ndipo unsaturated poliyesitala ndi kusungunuka mu monoma kuti ali ndi mphamvu polymerised ( zambiri styrene).
Unsaturated polyester iyi imasungunuka mu monomer (kawirikawiri styrene) yomwe ili ndi luso lopanga polymerise, ndipo ikakhala madzi owoneka bwino, imatchedwa unsaturated polyester resin (Unsaturated Polyester Resin kapena UPR mwachidule).
Unsaturated poliyesitala utomoni Choncho angatanthauzidwe ngati viscous madzi opangidwa ndi polycondensation wa dibasic acid ndi dibasic mowa wokhala unsaturated dibasic acid kapena dibasic mowa mu liniya polima pawiri kusungunuka mu monoma (nthawi zambiri styrene). Unsaturated polyester resins, omwe amapanga 75 peresenti ya utomoni womwe timagwiritsa ntchito tsiku lililonse.