Cov polyethylene fiber uas muaj molecular hnyav heev yog cov khoom siv tiv thaiv mos txwv uas sib dua tshaj plaws hauv ntiaj teb, uas muaj qhov sib piv ntawm lub zog thiab qhov hnyav, thiab modulus siab. Vim tias nws nqus tau zoo, qhov kev puas tsuaj ntawm kev nkag mus rau hauv mos txwv tuaj yeem txo qis heev. Tsis tas li ntawd, cov ntaub UD tuaj yeem nqus tau qhov kev poob siab ntawm mos txwv thiab thaiv cov mos txwv uas raug tsoo kom tshem tawm qhov kev raug mob thiab tiv thaiv kev raug mob thib ob. Yog li ntawd, nws yog cov khoom siv sib xyaw mos mos zoo tshaj plaws.

Peb cov ntaub siv thev naus laus zis tshwj xeeb muaj ntau yam zoo ntawm kev ua tau zoo ballistic, zoo txhim khu kev qha, xis hnav, lub teeb yuag, tiv thaiv UV, muaj zog, zoo elastic modulus, nqus tau zog siab. Zoo heev hauv kev tiv thaiv xeb, tiv thaiv av noo, thermal stability thiab tiv taus ntau yam ib puag ncig hnyav. Kev siv: Lub tsho tiv thaiv lub cev, phaj tiv thaiv tawv, tiv thaiv tawg, pam tiv thaiv foob pob, tiv thaiv ballistic thiab cuam tshuam, cov khoom siv tiv thaiv pej xeem xws li kev tsim cov cuab yeej ua rog ntawm tsheb, tank, dav hlau, nkoj tub rog, radar & missile tiv thaiv plhaub, thiab lwm yam.