Ua ntej, cia peb txhais cov nylon thiab UHMW. Nylon yog ib qho hluavtaws polymer uas feem ntau siv rau hauv daim ntaub ntawv vim nws lub zog thiab kav ntev. Nws yog lub npe hu rau nws lub zog tensile siab, abrasion tsis kam, thiab toughness. Nylon feem ntau yog siv rau hauv cov khoom xws li khaub ncaws, parachutes, thiab khoom siv sab nraum zoov.
UHMW sawv cev rau ultrahigh molecular hnyav polyethylene, uas yog cov khoom siv thermoplastic. Nws yog lub npe hu rau nws lub siab tsis kam mus rau abrasion thiab cuam tshuam, nrog rau nws tus kheej-lubricating zog. UHMW feem ntau yog siv rau hauv daim ntawv thov xws li cov khoom siv kho mob, siv conveyor, thiab cov khoom siv tsheb.
Tam sim no, cia peb piv lub zog ntawm nylon thiab UHMW. Feem ntau, nylon muaj lub zog tensile siab dua UHMW. Lub zog tensile hais txog qhov siab tshaj plaws uas cov khoom tuaj yeem tiv taus ua ntej nws tawg. Nylon muaj lub zog tensile ntawm ib ncig ntawm 75 MPa (megapascals), thaum UHMW muaj lub zog tensile ntawm ib ncig ntawm 40 MPa. Qhov no txhais tau hais tias nyob rau hauv lub taub hau-rau-lub taub hau kev ntsuam xyuas, nylon yuav tawm los rau saum.
Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias UHMW muaj lwm lub zog uas ua rau nws xav tau hauv qee yam kev siv. Piv txwv li, UHMW muaj cov coefficient tsawg ntawm kev sib txhuam, uas txhais tau hais tias nws tiv taus cov ntaub ntawv nplaum thiab yooj yim rau swb dua lwm qhov chaw. Qhov no ua rau nws zoo tagnrho rau siv nyob rau hauv conveyor siv thiab lwm yam kev lag luam cov ntaub ntawv uas yuav tsum tau kom muaj kev ruaj ntseg thauj.
Lwm qhov zoo dua ntawm UHMW yog nws cov khoom siv lub cev lubricating. UHMW muaj qhov hnyav molecular, uas txhais tau hais tias nws cov molecules ntev dua thiab ntau dua entangled dua lwm cov yas. Qhov no ua rau kom muaj kev sib raug zoo ntawm kev sib raug zoo thiab tsis tshua muaj coefficient ntawm kev sib txhuam, uas txhais tau hais tias nws tsis tas yuav tsum tau lubrication sab nraud. Cov cuab yeej ntawm tus kheej lubricating no ua rau UHMW zoo tagnrho rau kev siv hauv cov ntawv thov uas lubrication nyuaj lossis tsis yooj yim sua.
Hauv kev xaus, thaum nylon muaj lub zog tensile siab dua UHMW, nws yog ib qho tseem ceeb uas yuav tau xav txog lwm yam thaum muab piv rau ob cov ntaub ntawv. UHMW muaj cov khoom tshwj xeeb uas ua rau nws xav tau nyob rau hauv qee yam kev siv, thiab nws tus kheej lubricating zog ua rau nws yog ib qho khoom txaus nyiam siv rau hauv kev lag luam. Thaum kawg, kev xaiv ntawm nylon thiab UHMW yuav nyob ntawm seb cov ntawv thov tshwj xeeb thiab cov khoom xav tau ntawm cov khoom siv.
