Muaj ob hom resins siv los tsim cov khoom sib xyaw: thermoset thiab thermoplastic.Thermoset resins yog nyob deb ntawm cov khoom siv feem ntau, tab sis cov thermoplastic resins tau txais kev txaus siab dua vim yog siv cov khoom sib xyaw.
Thermoset resins harden vim cov txheej txheem kho, uas siv cov cua sov los tsim cov sib txuas sib txuas ntawm cov polymers uas muaj cov khoom tsis sib haum los yog infusible rigid bonds uas tsis yaj thaum rhuab.Thermoplastic resins, ntawm qhov tod tes, yog cov ceg ntoo lossis cov saw hlau ntawm cov monomers uas soften thaum rhuab thiab solidify ib zaug txias, cov txheej txheem thim rov qab uas tsis tas yuav muaj kev sib txuas tshuaj.Hauv luv luv, koj tuaj yeem tshem tawm thiab hloov pauv cov thermoplastic resins, tab sis tsis yog thermoset resins.
Kev txaus siab rau cov thermoplastic composites yog loj hlob, tshwj xeeb tshaj yog nyob rau hauv kev lag luam automotive.
Qhov zoo ntawm Thermosetting Resins
Thermoset resins xws li epoxy lossis polyester yog nyiam nyob rau hauv kev tsim khoom vim lawv cov viscosity tsawg thiab zoo heev nkag mus rau hauv lub network fiber ntau.Yog li siv tau ntau fibers thiab ua kom lub zog ntawm cov khoom tiav tiav.
Cov tiam tshiab ntawm cov dav hlau feem ntau suav nrog ntau dua 50 feem pua cov khoom sib xyaw.
Thaum lub sij hawm pultrusion, fibers yog dipped rau hauv ib tug thermoset resin thiab muab tso rau hauv ib tug rhuab pwm.Qhov kev ua haujlwm no ua rau cov tshuaj tiv thaiv kab mob uas hloov cov tshuaj qis-molecular-qhov hnyav rau hauv cov khoom siv peb-dimensional network qauv uas cov fibers raug kaw rau hauv lub network tshiab tsim.Txij li feem ntau cov tshuaj tiv thaiv kab mob yog exothermic, cov tshuaj tiv thaiv txuas ntxiv ua cov saw hlau, ua kom muaj ntau lawm.Thaum cov resin teeb, cov qauv peb-seem xauv cov fibers nyob rau hauv qhov chaw thiab imparts lub zog thiab nruj rau cov composite.
Post lub sij hawm: Oct-19-2022