Muaj ob txoj hauv kev rau kev npaj prepregs: txoj kev qhuav thiab txoj kev ntub dej. Txoj kev qhuav yog ntxiv subdivided rau hauv cov hmoov txoj kev thiab kub -kub resin txoj kev (tom kawg kuj hu ua yooj yim raws li txoj kev kub -melt method). Cov hmoov prepreg txhais tau tias yog cov khoom sib xyaw uas cov hmoov nplej ua rau cov fibers thiab ua rau ib nrab melting, ua rau lub sij hawm tsis tu ncua uas cov fibers tsis tag nrho impregnated los ntawm cov resin.
Thaum sib piv cov ntaub ntawv sib xyaw fabricated siv qhuav - txoj kev prepregs piv rau ntub - txoj kev prepregs, tus qub feem ntau nthuav tawm qhov zoo tshaj plaws saum npoo tiav thiab tso cai rau kev tswj xyuas meej dua cov ntsiab lus ntawm cov khoom siv. Nyob rau hauv cov ntsiab lus ntawm cov ntaub ntawv zoo heev rau kev siv aerospace, kub -melt composites feem ntau ua kom pom kev zoo dua hydrothermal stability piv rau kev daws- txoj kev sib xyaw: tom qab immersion hauv boiling dej rau 48 teev, qhov tuav tus nqi ntawm txhua yam khoom-xws li flexural modulus thiab lub zog loj dua 7} rau shear is as well as kub- melt composites dua rau lawv cov kev daws teeb meem -txoj kev counterparts, tshwj xeeb tshaj yog hais txog kev tuav ntawm siab -kub txhua yam khoom.
