Cov ntaub dab tsi muaj zog dua Kevlar

Kevlar yog cov khoom siv nrov thiab ruaj khov uas feem ntau siv los tiv thaiv iav xws li cov tsho tiv thaiv mos txwv, kaus mom hlau, thiab hnab looj tes. Txawm li cas los xij, muaj ob peb lwm cov ntaub ntawv uas pom tau tias muaj zog dua Kevlar hais txog lub zog tensile thiab kev puas tsuaj.

Ib qho khoom siv zoo li no yog Dyneema, tseem hu ua Ultra High Molecular Nyhav Polyethylene (UHMWPE). Dyneema tsis tshua muaj zog thiab hnav, ua rau nws zoo tagnrho rau kev siv hauv kev siv xws li marine, kev ua si, khoom siv tiv thaiv tus kheej, thiab cov khoom siv tub rog. Nws muaj lub zog tensile txog li 15 npaug zog dua li cov hlau thiab txog li 40 feem pua ​​muaj zog dua Kevlar.

Lwm cov khoom siv muaj zog yog Spectra, uas zoo ib yam li Dyneema tab sis muaj cov khoom sib txawv me ntsis, suav nrog ntau dua modulus (stiffness). Spectra yog siv nyob rau hauv ntau yam kev siv, nrog rau lub cev armor, ropes, thiab cables, vim nws lub zog siab thiab zoo heev puas.

Cov pa roj carbon nanotubes yog lwm yam khoom siv uas tau raug sim rau nws lub zog thiab kav ntev. Kev tshawb fawb tau pom tias cov pa roj carbon nanotubes muaj lub zog tensile txog li 100 npaug zog dua hlau thiab 30 npaug zog dua Kevlar. Txawm li cas los xij, tam sim no lawv kim dhau los siv rau ntawm qhov loj.

Hauv kev xaus, thaum Kevlar yog cov khoom siv muaj zog thiab siv dav, muaj lwm cov ntaub ntawv uas tseem muaj zog thiab ruaj khov dua. Kev nce qib hauv cov ntaub ntawv tshawb fawb thiab thev naus laus zis tau ua rau kev txhim kho cov khoom siv tshiab, ntau dua uas tau txuas ntxiv thawb cov kev txwv ntawm qhov ua tau.