Muaj ob hom resins siv los tsim cov composites: thermoset thiab thermoplastic. Thermoset resins yog los ntawm deb tshaj plaws cov resins, tab sis thermoplastic resins tau txais cov nyiaj rov qab tau vim yog nthuav kev siv ntawm kev sib xyaw.
Thermoset resins Harden vim tias cov txheej txheem kho kom zoo nkauj los ua kom kub-txuas cov neeg polymuble uas muaj cov ntawv cog tseg tsis txaus ntseeg uas tsis yaj thaum ua kom sov. Thermoplastic Resins, ntawm qhov tod tes, yog ceg tawv lossis solased ib zaug txias, cov txheej txheem thim rov qab uas tsis xav tau kev sib txuas. Hauv ntej, koj tuaj yeem thim thiab hloov kho thermoplastic Resins, tab sis tsis thermoset resins.
Kev txaus siab rau Thermoplastic composites yog loj hlob, tshwj xeeb yog nyob hauv kev lag luam automotive.
Qhov zoo ntawm thermosetting resins
Thermoset resins xws li epoxy lossis polyester yog kev lag luam nyob rau hauv kev tsim khoom vim lawv cov viscosity nyob rau hauv cov network fiber ntau. Nws yog li ua tau kom siv ntau cov fibers thiab nce lub zog ntawm cov khoom tiav tiav.
Qhov tseeb tiam ntawm lub dav hlau feem ntau suav nrog ntau dua li 50 feem pua sib xyaw.
Thaum lub sij hawm pultrusion, fibers yog dipped rau hauv lub thermoset cob thiab muab tso rau hauv ib tug rhuab pwm. Txoj haujlwm no ua kom cov tshuaj tiv thaiv uas hloov tau tus qauv uas muaj peb lub ntsej muag tau ua rau tus qauv tshiab no. Vim tias feem ntau kev kho tau yog exothermic, cov kev tawm tsam no txuas ntxiv ua cov saw hlau, ua kom cov khoom lag luam loj loj. Thaum lub resin teeb, peb-seem qauv kaw cov fibers nyob rau hauv qhov chaw thiab tsis muaj zog thiab txhav rau cov composite.
Lub Sijhawm Post: Oct-19-2022
