Dab tsi yog Thermosetting Composite Materials
Thermosetting composite cov ntaub ntawv yog ib hom ntawm polymer matrix composite (PMC) uas tau ntxiv nrog fibers. Cov ntaub ntawv no muaj cov yam ntxwv tshwj xeeb uas ua rau lawv sib nrug ntawm lwm hom khoom sib xyaw; lawv ua irreversible solids thaum lawv kho. Qhov no txhais tau hais tias ib zaug lawv tau molded thiab kho, lawv tsis tuaj yeem yaj lossis rov zoo li lwm cov yas.
Cov txheej txheem ntawm kev kho cov thermosetting cov ntaub ntawv sib xyaw suav nrog cov tshuaj tiv thaiv uas tau qhib los ntawm tshav kub lossis hluav taws xob. Cov tshuaj tiv thaiv no ua rau cov polymer matrix crosslinks thiab ua nruj, tsim cov khoom muaj zog thiab ruaj khov. Cov khoom siv sib xyaw no feem ntau siv rau hauv cov ntawv thov uas yuav tsum muaj lub zog siab, nruj, thiab qhov ruaj khov.
Ib qho ntawm feem ntau hom thermosetting composite cov ntaub ntawv yog fiberglass. Cov khoom no yog tsim los ntawm nyias strands ntawm iav fibers uas yog embedded nyob rau hauv ib tug polymer matrix. Cov iav fibers muab lub zog zoo thiab nruj, thaum lub polymer matrix xyuas kom meej tias cov khoom siv tiv taus ya raws thiab corrosion. Fiberglass feem ntau yog siv nyob rau hauv daim ntawv thov xws li nkoj hulls, automotive qhov chaw, thiab aerospace Cheebtsam.
Lwm hom thermosetting composite khoom yog carbon fiber reinforced polymer (CFRP). Cov khoom no yog tsim los ntawm cov pa roj carbon fibers uas yog embedded nyob rau hauv ib tug polymer matrix. Tsis zoo li fiberglass, carbon fibers muab zoo heev lub zog thiab nruj thaum tseem yog lub teeb, uas yog vim li cas lawv feem ntau siv nyob rau hauv high-kev ua tau zoo daim ntaub ntawv xws li kev sib tw tsheb, aerospace Cheebtsam, thiab cov khoom ua si.
Thermosetting composite cov ntaub ntawv muaj ntau yam zoo dua lwm yam ntaub ntawv xws li hlau thiab yas. Lawv muaj lub zog-rau-qhov hnyav piv, uas ua rau lawv zoo tagnrho rau cov ntawv thov qhov hnyav yog qhov kev txhawj xeeb. Lawv kuj muaj peev xwm tiv taus corrosion, thiab lawv qhov chaw ruaj khov txhais tau hais tias lawv tuav lawv cov duab thiab qhov loj me txawm tias nyob rau hauv huab cua.
Txawm hais tias lawv muaj ntau yam zoo, cov khoom siv thermosetting composite muaj qee qhov kev txwv. Lawv feem ntau kim dua lwm cov ntaub ntawv, thiab lawv cov kev ua thiab kev tsim khoom yuav tsum tau siv cov cuab yeej tshwj xeeb thiab kev txawj ntse. Tsis tas li ntawd, vim tias lawv tsis tuaj yeem yaj lossis hloov pauv, lawv cov qauv tsim yog qhov nyuaj dua thiab yuav tsum tau ua tib zoo npaj kom ntseeg tau tias txhua qhov kev hloov pauv tsim nyog tuaj yeem ua raws.
Hauv kev xaus, cov khoom siv thermosetting yog ib yam tseem ceeb ntawm polymer matrix composite uas muaj cov khoom tshwj xeeb xws li lub zog siab, tawv, thiab qhov ntev. Thaum lawv kim dua thiab xav tau cov txuj ci tsim tshwj xeeb, lawv cov khoom tshwj xeeb ua rau lawv zoo tagnrho rau ntau yam kev siv hauv kev lag luam xws li aerospace, automotive, thiab cov khoom ua si. Raws li thev naus laus zis nce qib, peb tuaj yeem cia siab tias yuav pom cov ntawv thov tshiab ntawm cov khoom siv ntau yam no.
