Te Resin Polyester Kounga Pai mō te muka karāhe
Ko te "Polyester" he momo pūhui polymer kei roto ngā hononga ester e wehewehea ana i ngā kapia pēnei i te phenolic me te epoxy resins. Ka puta tēnei pūhui polymer i te tauhohenga polycondensation i waenga i te waikawa dibasic me te waipiro dibasic, ā, ina kei roto i tēnei pūhui polymer he hononga takirua kore-māku, ka kiia ko te polyester kore-māku, ā, ka rewa tēnei polyester kore-māku ki roto i te monomer e kaha ana ki te polymerized (ko te styrene te tikanga).
Ka rewa tēnei polyester kāore i te mākū ki roto i tētahi monomer (ko te styrene te tikanga) e āhei ana ki te whakakotahi, ā, ina huri hei wai matotoru, ka kiia he kapia polyester kāore i te mākū (Unsaturated Polyester Resin, UPR rānei te whakarapopototanga).
Nō reira, ka taea te tautuhi i te kapia polyester kāore i te mākū hei wai matotoru i hangaia e te polycondensation o te waikawa dibasic me te waipiro dibasic kei roto he waikawa dibasic kāore i te mākū, he waipiro dibasic rānei i roto i te pūhui polymer rārangi i rewa i roto i te monomer (ko te styrene te tikanga). Ko ngā kapia polyester kāore i te mākū, e 75 ōrau o ngā kapia e whakamahia ana e tātou i ia rā.













