Cov xim yaj yog ib qho tseem ceeb hauv kev lag luam xws li yas thiab xim pleev xim rau ntoo thiab cov kua luam ntawv. Cov xim no muaj ntau yam ntxwv thiab kev siv, ua rau lawv tsis tseem ceeb hauv kev tsim khoom.
Cov xim yaj tau muab faib ua ntau hom, suav nrog cov xim hlau sib xyaw, cov xim yaj tau roj, cov xim nitrocellulose, cov xim polyester, thiab lwm yam. Txhua hom muaj nws cov yam ntxwv thiab kev siv tshwj xeeb. Ib qho ntawm cov kev siv tseem ceeb ntawm cov xim yaj tau yog nyob rau hauv kev lag luam yas thiab xim. Cov xim no tuaj yeem yaj rau hauv cov kuab tshuaj los ua cov tshuaj muaj xim. Cov yam ntxwv no ua rau lawv zoo tagnrho rau kev pleev xim rau cov khoom siv yas thiab xim. Txawm hais tias nws yog cov xim ci ntsa iab ntawm cov khoom ua si yas lossis qhov ci ntsa iab ntawm cov chaw pleev xim, cov xim yaj tau ua lub luag haujlwm tseem ceeb hauv kev txhim kho qhov zoo nkauj ntawm cov khoom no.
Cov kev siv cov xim pleev xim tsis yog tsuas yog siv rau cov yas thiab cov xim pleev xwb; lawv kuj siv dav los pleev xim rau ntoo. Cov neeg ua haujlwm ntoo feem ntau siv cov xim pleev xim los ntxiv xim rau ntau yam khoom ntoo, xws li rooj tog thiab cov khoom dai kom zoo nkauj. Cov xim pleev xim nkag mus tob rau hauv cov fibers ntoo, ua kom cov xim sib npaug thiab kav ntev. Tsis tas li ntawd, nws cov khoom qhuav sai ua rau nws zoo tagnrho rau cov txheej txheem pleev xim ntoo zoo.
Lwm qhov tseem ceeb ntawm kev siv cov xim yaj yog nyob rau hauv kev lag luam luam ntawv. Cov xim no feem ntau yog siv los tsim cov xim ci ntsa iab thiab zoo rau kev luam ntawv. Qhov solubility ntawm cov xim yaj ua rau lawv yooj yim sib tov nrog cov tshuaj yaj sib xws, ua rau cov xim luam ntawv tawg zoo thiab qhuav sai. Qhov no ua rau cov txheej txheem luam ntawv du thiab meej hauv ntau yam lag luam xws li ntim khoom, luam tawm thiab ntaub.
Tam sim no cia peb kawm txog cov yam ntxwv uas ua rau cov xim yaj tawm los. Ib qho tshwj xeeb yog nws qhov ceev ceev ntawm lub teeb, uas ua kom cov xim tseem ci ntsa iab thiab tsis ploj txawm tias raug tshav ntuj lossis lwm yam UV. Cov yam ntxwv no tseem ceeb rau cov ntawv thov uas xav tau kev khaws xim ntev, xws li cov khoom yas sab nraum zoov lossis cov chaw pleev xim.
Cov xim pleev uas muaj cov kuab tshuaj kuj muaj kev tiv taus tshuaj lom neeg siab, ua rau lawv haum rau cov lag luam uas feem ntau raug rau cov tshuaj lom neeg hnyav, xws li cov tshuaj pleev tsheb lossis cov tshuaj pleev xim hauv kev lag luam. Lawv tswj tau cov xim kom zoo txawm tias kov cov kuab tshuaj, roj lossis cov kua qaub, ua kom ntseeg tau tias cov xim tiav ntev thiab ruaj khov.
Tsis tas li ntawd xwb, cov xim pleev xim uas muaj cov tshuaj yaj tau ua rau muaj kev ruaj khov zoo heev, ua rau lawv haum rau cov ntawv thov uas muaj qhov kub siab. Qhov no tshwj xeeb tshaj yog muaj txiaj ntsig zoo rau cov txheej txheem yas molding lossis thaum pleev xim rau cov khoom uas yuav raug cua sov.
Xaus lus, cov xim yaj yog cov xim uas siv tau ntau yam hauv ntau yam lag luam. Lawv siv rau hauv kev lag luam yas thiab pleev xim tuaj yeem ua rau cov khoom ci ntsa iab thiab pom tseeb. Cov neeg ua haujlwm ntoo tau txais txiaj ntsig los ntawm lawv lub peev xwm nkag mus rau hauv cov ntoo fibers, ua rau muaj xim ntev. Kev lag luam number case luam ntawv vam khom cov khoom qhuav sai thiab zoo ntawm cov xim yaj kom tsim cov number case luam ntawv zoo. Cov khoom ntawm cov xim yaj, suav nrog kev ua kom lub teeb ci ntsa iab zoo heev, kev tiv thaiv tshuaj lom neeg, thiab kev ruaj khov thermal, pab txhawb rau lawv daim ntawv thov dav thiab kev ruaj khov. Txawm hais tias ntxiv xim rau cov khoom ua si yas, pleev xim ntoo, lossis luam tawm cov qauv tsim nyuaj, cov xim yaj ua lub luag haujlwm tseem ceeb hauv kev txhim kho qhov zoo nkauj thiab kev ua haujlwm ntawm ntau yam khoom.
Lub sijhawm tshaj tawm: Lub Xya Hli-20-2023