UHMWPE VS Aramid hauv Kev Ua Haujlwm ntawm Daim Ntawv Thov Tsis Pom Zoo
Kev tiv thaiv cov neeg hauv cov haujlwm uas muaj kev pheej hmoo siab xws li tub rog, tub ceev xwm, thiab cov neeg ua haujlwm pabcuam thaum muaj xwm txheej ceev rau cov pej xeem yog qhov tseem ceeb tshaj plaws. Txoj kev loj hlob ntawm tus kheej tiv thaiv iav zoo li cov tsho tiv thaiv mos txwv tau pab cawm ntau txhiab tus neeg txoj sia. Hauv thaj tsam ntawm cov mos txwv, cov ntaub ntawv siv los tsim cov tsho ballistic ua lub luag haujlwm tseem ceeb hauv kev nyab xeeb thiab kev tiv thaiv ntawm tib neeg. Ob yam khoom siv tseem ceeb rau kev tsim cov hlau nplaum ntawm cov tsho tiv thaiv mos txwv yog Ultra-high-molecular-weight polyethylene (UHMWPE) thiab Aramid. Ob leeg cov ntaub ntawv muaj lawv cov cim zoo thiab configurations uas ua rau lawv haum rau txawv daim ntaub ntawv.
Tsab ntawv xov xwm no yog npaj los muab kev sib piv ntawm UHMWPE thiab Aramid cov ntaub ntawv siv hauv cov ntawv siv phom. Hauv tsab xov xwm no, peb yuav muab cov lus piav qhia ntxaws ntxaws ntawm ob cov ntaub ntawv, sib piv lawv cov khoom, suav nrog qhov hnyav, lub zog, thiab kev tiv thaiv kev puas tsuaj, thiab ntsuas lawv cov txiaj ntsig zoo li cov ntaub ntawv mos mos.
Ultra-high-molecular-weight polyethylene (UHMWPE):
Ultra-high-molecular-weight polyethylene (UHMWPE) yog ib hom thermoplastic polymer uas muaj qhov hnyav molecular ntawm 3.5 lab g / mol. Nws yog ib qho khoom siv dav siv hauv kev tsim cov tsho tiv thaiv mos txwv vim nws lub zog siab thiab qhov hnyav. UHMWPE yog tsim los ntawm cov txheej txheem hu ua gel spinning uas tsim ultra-ntev, linear polyethylene chains uas sib dhos ua ke rau ib leeg. Cov chains no raug kho nrog tshuaj thiab ncab los tsim cov fibers nrog lub zog tensile siab, uas tuaj yeem ua rau hauv cov ntaub siv los ua cov tsho tiv thaiv mos txwv.
Qhov hnyav ntawm UHMWPE yog ib qho txiaj ntsig tseem ceeb; nws yog kaum lub sij hawm sib zog dua hlau tab sis tseem muaj zog incredibly. Vim nws lub teeb yuag, lub phaj armor tsim nrog UHMWPE yog qhov yooj yim thiab yooj yim txav mus los thaum muab qib kev tiv thaiv ballistic. UHMWPE fiber ntau muaj lub zog tensile siab tshaj 3.5GPa, uas yog qhov zoo heev rau kev nqus lub zog los ntawm cov mos txwv thiab lwm yam kev cuam tshuam.
Aramid:
Aramid, tseem hu ua aromatic polyamide, yog ib chav kawm ntawm hluavtaws fibers siv nyob rau hauv ntau yam kev siv vim lawv lub zog siab. Cov fibers yog tsim los ntawm spinning ib cov kua polymer los ntawm ib tug spinning nozzle, uas ces solidifies lub polymer rau hauv lub xeev fibrous. Aramid fibers muaj lub zog-rau-qhov hnyav piv thiab paub txog lawv cov kev tiv thaiv rau kev puas tsuaj, poob siab, thiab kub. Cov aramid fibers yog siv nyob rau hauv ntau yam kev siv, nrog rau kev tiv thaiv ballistic, aerospace, thiab cov khoom ua si.
Aramid fiber ntau paub txog nws zoo heev tiv thaiv tshav kub. Nws muaj qhov melting point ntawm 500 degree, uas txhais tau hais tias nws khaws nws cov khoom txawm tias nyob rau hauv ib puag ncig kub. Cov khoom siv tuaj yeem nqus tau ntau lub zog yam tsis tau ua tsis tiav, ua rau nws tsim nyog siv rau hauv cov tsho tiv thaiv mos txwv. Aramid muaj lub siab tensile modulus ntawm ib ncig ntawm 100GPa, uas ua rau nws lub teeb yuag thiab muaj zog heev.
Kev sib piv ntawm UHMWPE thiab Aramid:
1. Nyhav:
Ib qho txiaj ntsig tseem ceeb ntawm UHMWPE yog nws qhov hnyav. Nws yog kwv yees li kaum lub sij hawm sib zog dua cov hlau, uas ua rau cov phaj armor ua los ntawm cov khoom siv ntau dua thiab nyiam hnav rau lub sijhawm ntev. Thaum piv rau aramid, UHMWPE muaj qhov qis dua, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev tiv thaiv ballistic.
2. Resistance rau abrasion:
Aramid paub txog nws qhov kev tiv thaiv siab rau kev puas tsuaj, ua rau nws haum rau cov ntawv thov uas xav tau cov khoom siv los tiv thaiv kev siv hnyav. UHMWPE, ntawm qhov tod tes, tsis zoo li abrasion-resistant li aramid, uas ua rau nws tsis haum rau cov ntawv thov uas yuav tsum tau muaj kev tiv thaiv siab rau kev puas tsuaj.
3. Lub zog:
Ob leeg UHMWPE thiab aramid yog cov ntaub ntawv muaj zog, tab sis UHMWPE muaj zog tensile ntau dua aramid. UHMWPE paub txog nws lub peev xwm zoo heev los nqus lub zog ntawm cov mos txwv, uas ua rau nws yog cov khoom siv zoo tshaj plaws rau kev tiv thaiv ballistic.
4. Adaptability:
UHMWPE yog hloov tau ntau dua li aramid, uas txhais tau hais tias nws tuaj yeem hloov tau yooj yim dua rau cov kev cai tshwj xeeb. Nws muaj peev xwm tsim cov kev teeb tsa sib txawv ntawm UHMWPE nyob ntawm qhov kev tiv thaiv kev tiv thaiv ntawm lub tsho tiv thaiv mos txwv.
5. Nqi:
UHMWPE yog kim tshaj aramid, uas txhais tau hais tias nws yog feem ntau siv nyob rau hauv siab dua-kawg mos txwv vests. Aramid yog siv nyob rau hauv qis-kawg mos txwv vests raws li nws yog pheej yig dua los tsim.
Kev ua tau zoo raws li cov khoom siv phom phom:
Ob leeg UHMWPE thiab aramid yog cov khoom siv zoo rau kev tiv thaiv mos txwv. Txawm li cas los xij, UHMWPE yog qhov kev xaiv zoo dua rau cov phaj armor vim nws lub zog tensile siab thiab qhov hnyav. UHMWPE muaj peev xwm nqus tau lub zog los ntawm cov mos txwv, uas ua rau nws zoo dua los tiv thaiv tus neeg siv los ntawm kev raug mob.
Xaus:
UHMWPE thiab aramid yog ob qho khoom siv tseem ceeb siv hauv thaj tsam ntawm cov mos txwv. Ob qho tib si cov ntaub ntawv muaj lawv qhov tshwj xeeb zoo thiab qhov tsis muaj zog uas ua rau lawv haum rau kev siv sib txawv. UHMWPE yog qhov zoo dua rau kev tiv thaiv ballistic tshaj aramid vim nws lub zog tensile siab thiab qhov hnyav. Txawm li cas los xij, aramid yog ntau dua abrasion-resistant, ua rau nws zoo tagnrho rau cov ntawv thov uas yuav tsum muaj kev tiv thaiv siab rau kev puas tsuaj.
Hauv kev xaus, ob qho tib si UHMWPE thiab aramid muaj lawv qhov chaw nyob hauv thaj tsam ntawm cov mos txwv. Thaum kawg, kev xaiv ntawm cov khoom yog nyob ntawm qhov kev npaj siv ntawm armor phaj. Nws yog ib qho tseem ceeb uas yuav tau xaiv cov khoom siv uas yuav ua tau raws li qhov kev xav tau ntawm kev tiv thaiv ntawm tus neeg siv kom ntseeg tau tias muaj kev nyab xeeb siab tshaj plaws.
