Unsaturated polyester cob yog feem ntau siv hom thermosetting resin, uas feem ntau yog linear polymer compound nrog ester bonds thiab unsaturated ob daim ntawv cog lus tsim los ntawm condensation ntawm unsaturated dicarboxylic acid nrog diols los yog saturated dicarboxylic acid nrog unsaturated diols. Feem ntau, cov tshuaj tiv thaiv polyester condensation yog nqa tawm ntawm 190-220 ℃ mus txog rau qhov xav tau acid tus nqi (los yog viscosity). Tom qab cov tshuaj tiv thaiv polyester condensation tiav, ib qho nyiaj ntawm vinyl monomer ntxiv thaum kub los npaj cov kua nplaum. Cov tshuaj polymer no hu ua unsaturated polyester resin.
Unsaturated polyester resin tau ua tiav zoo hauv ntau qhov kev lag luam, xws li hauv kev tsim khoom ntawm windsurfing thiab yachts hauv dej ua si. Cov polymer no ib txwm nyob ntawm qhov tseem ceeb ntawm qhov kev hloov pauv tiag tiag hauv kev lag luam shipbuilding, vim nws tuaj yeem muab kev ua tau zoo thiab kev siv tau yooj yim heev.
Unsaturated polyester resins kuj tseem siv nyob rau hauv kev lag luam tsheb vim lawv tsim ntau yam, lub teeb yuag, tus nqi qis, thiab tsis tshua muaj zog txhua yam.
Cov khoom siv no tseem siv tau rau hauv cov tsev, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov cookware, qhov cub, cov vuas vov tsev, cov khoom siv hauv chav dej, nrog rau cov kav dej thiab cov kav dej.
Kev siv ntawm unsaturated polyester resin muaj ntau yam. Polyester resins qhov tseeb sawv cev rau ib qho ntawm qhov tseeb
compounds siv nyob rau hauv ntau yam kev lag luam. Qhov tseem ceeb tshaj plaws, nrog rau cov lus piav qhia saum toj no, yog:
* Cov ntaub ntawv sib xyaw
* Cov xim ntoo
* Plua plav laminated panels, corrugated panels, ribbed panels
* Gel tsho tiv no rau nkoj, tsheb thiab chav dej fixtures
* Xim pastes, fillers, stucco, putties thiab tshuaj anchorings
* Self-extinguishing composite cov ntaub ntawv
* Quartz, marble thiab dag cement
