ʻO ke kiʻekiʻe kiʻekiʻe Liquid Unsaturated Polyester Resin no Fiberglass
ʻO ka "Polyester" kahi papa o nā pūhui polymer i loaʻa nā kaula ester i hoʻokaʻawale ʻia mai nā resins e like me ka phenolic a me ka epoxy resins. Hoʻokumu ʻia kēia pūhui polymer e ka hopena polycondensation ma waena o ka waika dibasic a me ka waiʻona dibasic, a ke loaʻa i kēia pūhui polymer kahi paʻa pālua unsaturated, ua kapa ʻia ʻo ia ka polyester unsaturated, a ua hoʻoheheʻe ʻia kēia polyester unsaturated i loko o kahi monomer i hiki ke polymerised ( styrene maʻamau).
Hoʻoheheʻe ʻia kēia polyester unsaturated i loko o kahi monomer (maʻa mau styrene) i hiki ke polymerise, a i ka wā e lilo ai ia i wai viscous, ua kapa ʻia ʻo ia he resin polyester unsaturated (Unsaturated Polyester Resin a i ʻole UPR no ka pōkole).
No laila hiki ke wehewehe ʻia ka resin polyester unsaturated ma ke ʻano he wai viscous i hoʻokumu ʻia e ka polycondensation o kahi waiʻaka dibasic me ka waiʻona dibasic i loaʻa i ka waika dibasic unsaturated a i ʻole ka waiʻona dibasic i loko o kahi pūhui polymer linear i hoʻoheheʻe ʻia i loko o kahi monomer (maʻamau styrene). ʻO nā resins polyester unsaturated, ʻo ia ka 75 pākēneka o nā resins a mākou e hoʻohana ai i kēlā me kēia lā.