Ua ntej, muab qhov kev qhia luv luv rau aramid thiab PE.
Aramid fiber ntau Aramid, tseem hu ua Kevlar (lub npe tshuaj yog phthalamide) tau yug los rau xyoo 1960s. Nws yog ib hom tshiab ntawm high-tech hluavtaws fiber ntau, uas muaj qhov kub thiab txias tsis kam, acid thiab alkali tsis kam., Lub teeb yuag, siab zog thiab lwm yam zoo, tau siv dav hauv cov khoom siv tiv thaiv mos txwv, kev tsim kho thiab cov khoom siv hluav taws xob thiab lwm yam. teb.
Tab sis aramid kuj muaj ob qhov tsis txaus ntseeg:
1) Nws yuav degrade thaum ntsib ultraviolet rays; Nws yog ib qho yooj yim rau hydrolyze, txawm tias nws tau khaws cia rau hauv qhov chaw qhuav, nws yuav nqus dej noo hauv huab cua thiab maj mam hydrolyze.
Yog li ntawd, aramid mos txwv cov ntawv ntxig thiab cov tsho tiv thaiv mos txwv tsis haum rau kev siv mus sij hawm ntev hauv qhov chaw muaj zog ultraviolet thiab ntub dej, uas yuav txo tau lawv cov kev tiv thaiv thiab kev pab cuam lub neej. Tsis tas li ntawd, kev ruaj ntseg tsis zoo thiab lub neej luv luv ntawm aramid kuj txwv kev siv ntxiv ntawm aramid hauv thaj tsam ntawm cov mos txwv.
Tus nqi ntawm aramid zoo kuj tseem siab dua li ntawm PE, uas tej zaum yuav yog 30% mus rau 50% ntau dua. Tam sim no, cov khoom siv phom phom siv aramid tau maj mam txo qis thiab pib hloov los ntawm PE cov khoom siv mos mos. Tshwj tsis yog tias nws nyob hauv ib puag ncig tshwj xeeb lossis muaj cov kev cai tshwj xeeb, xws li qhov kub thiab txias ntawm Middle East, nws raug nquahu kom siv cov khoom siv PE khoom mos mos.
1. PE hais ua ntej hauv PE cov khoom siv fiber ntau yog hais txog UHMW-PE, uas yog ultra-siab molecular hnyav polyethylene. Nws yog ib qho kev ua tau zoo ntawm cov organic fiber ntau tsim nyob rau hauv thaum ntxov 1980s, thiab hu ua lub ntiaj teb no niaj hnub no nrog carbon fiber thiab aramid. Peb high-tech fibers. Cov hnab yas siv hauv peb lub neej txhua hnub yog cov khoom siv polyethylene tiag tiag, uas muaj kev ruaj ntseg siab heev thiab nyuaj rau degrade, uas ua rau muaj kuab paug loj heev. Tab sis nws yog precisely vim hais tias ntawm no tus yam ntxwv uas nws tau los ua ib tug zoo tagnrho cov ntaub ntawv rau ua lub cev armor. Tsis tas li ntawd, nws muaj cov yam ntxwv ntawm qhov kub thiab txias tsis kam, UV tsis kam, thiab dej tsis kam.
Nyob rau hauv cov nqe lus ntawm kev tiv thaiv cov mos txwv ceev ceev, UHMW-PE fiber ntau lub ballistic tsis kam yog li ntawm 30% siab dua li ntawm aramid fiber ntau;
Hais txog kev tiv thaiv cov mos txwv kub ceev, lub peev xwm ntawm UHMW-PE fiber ntau yog 1.5 mus rau 2 npaug ntawm aramid fiber ntau, yog li PE tam sim no tau lees paub tias yog cov khoom siv phom sij zoo tshaj plaws.
Txawm li cas los xij, UHMW-PE kuj muaj qee qhov tsis txaus: nws qhov kub thiab txias tsis kam yog tsawg dua li ntawm aramid. Kev siv kub ntawm UHMWPE cov khoom siv phom phom yuav tsum tau tswj tsis pub dhau 80 ° C (uas tuaj yeem ua tau raws li qhov ntsuas kub ntawm tib neeg lub cev thiab cov khoom siv -kub tsis kam 55 ° C). Thaum qhov kub no dhau lawm, nws qhov kev ua tau zoo yuav poob sai, thiab thaum kub nce mus txog 150 ° C lossis siab dua, nws yuav yaj. Cov aramid mos txwv cov khoom tseem tuaj yeem tuav cov qauv ruaj khov thiab kev tiv thaiv kev ua haujlwm zoo hauv qhov kub thiab txias ntawm 200 ℃. Yog li ntawd, PE cov khoom tsis zoo yog tsis haum rau siv nyob rau hauv ib puag ncig kub.
Tsis tas li ntawd, qhov creep tsis kam ntawm PE tsis zoo li ntawm aramid, thiab cov khoom siv PE yuav deform qeeb thaum raug kev kub ntxhov. Yog li ntawd, cov khoom siv xws li cov kaus mom hlau uas muaj cov duab nyuaj thiab yuav tsum tau tiv taus lub zog ntev ntev tsis tuaj yeem ua los ntawm PE.
Ntxiv rau cov yam ntxwv no, tus nqi ntawm PE yog qis dua li ntawm aramid raws li tau hais ua ntej.
Feem ntau, PE thiab aramid muaj lawv tus kheej qhov zoo thiab qhov tsis zoo. Txawm li cas los xij, niaj hnub no nws tau siv ntau dua los siv PE ua cov mos txwv txheej. Nws tseem yog qhov tsim nyog los xaiv cov khoom siv phom phom uas haum rau koj raws li koj qhov xwm txheej tiag tiag.
Post lub sij hawm: Aug-20-2021
