Sili ona lelei o le Liquid Unsaturated Polyester Resin mo Fiberglass
O le "Polyester" o se vasega o mea fa'aputu polymer o lo'o i ai ni ester bonds e ese mai resins e pei o phenolic ma epoxy resins. O lenei mea fa'aputu polymer e gaosia e le polycondensation reaction i le va o le dibasic acid ma le dibasic alcohol, ma afai o lenei mea fa'aputu polymer o lo'o i ai se unsaturated double bond, e ta'ua o le unsaturated polyester, ma o lenei unsaturated polyester e fa'ata'ape'apeina i totonu o se monomer e mafai ona fa'aputu polymerized (e masani lava o le styrene).
O lenei polyester unsaturated e fa'ata'ape'apeina i totonu o se monomer (e masani lava o le styrene) lea e iai le gafatia e polymerise, ma a avea ma vai mafiafia, e ta'ua o le unsaturated polyester resin (Unsaturated Polyester Resin po'o le UPR pe a fa'apu'upu'u).
O le mea lea, e mafai ona faʻamatalaina le unsaturated polyester resin o se vai mafiafia ua fausia e ala i le polycondensation o se dibasic acid ma se dibasic alcohol o loʻo i ai se unsaturated dibasic acid poʻo le dibasic alcohol i totonu o se linear polymer compound ua faʻafefiloi i totonu o se monomer (e masani lava o le styrene). O unsaturated polyester resins, lea e faia ai le 75 pasene o resins tatou te faʻaaogaina i aso uma.













