Desiccants yog cov khoom siv dav siv hauv kev lag luam, khoom siv hluav taws xob, ntim khoom noj, thiab tshuaj. Lawv lub luag haujlwm tseem ceeb yog txhawm rau tswj cov av noo ib puag ncig thiab tiv thaiv cov khoom los ntawm kev ntub dej, oxidized, lossis pwm los ntawm lub cev lossis tshuaj adsorption. Hauv kev lag luam thoob ntiaj teb, cov khoom siv desiccants, uas yog cov khoom siv tiv thaiv ntxiv, ua lub luag haujlwm tseem ceeb hauv kev ua kom cov khoom thauj zoo hla ciam teb thiab khaws cia rau lub sijhawm ntev.
Los ntawm kev pom kev ua haujlwm, cov desiccants feem ntau muab faib ua ob pawg: lub cev adsorption thiab tshuaj adsorption. Lub cev adsorption desiccants, xws li silica gel desiccants, ntes cov dej molecules ntawm huab cua los ntawm lawv cov qauv ntxeem tau thiab tuaj yeem rov tsim dua thiab rov siv dua tom qab nqus dej noo. Cov tshuaj adsorption desiccants, xws li calcium chloride los yog quicklime desiccants, hloov cov dej noo mus rau hauv cov khoom sib txuas los ntawm cov tshuaj tiv thaiv, muab cov dej noo zoo dua, tab sis feem ntau yog npaj rau kev siv ib zaug. Ntau hom desiccants haum rau qhov sib txawv ntawm cov av noo ib puag ncig thiab cov khoom xav tau. Piv txwv li, silica gel feem ntau yog siv hauv cov khoom siv hluav taws xob kom tsis txhob muaj kev pheej hmoo corrosion, thaum lub ntim khoom noj nyiam siv cov zaub mov -qib montmorillonite lossis cov khoom siv ntxhia sib xyaw kom muaj kev nyab xeeb.
Hauv kev lag luam txawv teb chaws, kev ua haujlwm ntawm tus nqi desiccants yog qhov tshwj xeeb. Kev hloov pauv loj hauv qhov kub thiab av noo hauv cov thawv ntim khoom tuaj yeem yooj yim ua rau corrosion ntawm cov hlau, pwm loj hlob ntawm textiles, lossis luv luv Circuit Court hauv cov khoom siv hluav taws xob. Kev teeb tsa kom zoo tuaj yeem tswj cov av noo nyob hauv thaj tsam nyab xeeb (feem ntau qis dua 50%). Tsis tas li ntawd, rau siab - cov khoom muaj nqis xws li cov cuab yeej siv los yog cov tshuaj, cov kev kho kom qhuav (xws li lub tshuab nqus tsev ntim nrog cov desiccants) tau dhau los ua cov txheej txheem kev khiav hauj lwm rau cov neeg xa khoom thoob ntiaj teb.
Raws li cov khoom siv thoob ntiaj teb tau dhau los ua qhov nyuaj, desiccants tau hloov zuj zus los ntawm ib qho - cov ntaub ntawv ua haujlwm rau hauv ib qho tseem ceeb ntawm kev tiv thaiv kev thauj mus los. Cov tuam txhab lag luam txawv teb chaws yuav tsum tau tshawb fawb xaiv hom thiab ntau npaum li cas ntawm cov tshuaj desiccants raws li lub hom phiaj kev lag luam huab cua, cov yam ntxwv ntawm cov khoom, thiab cov kev cai tswj hwm (xws li EU REACH txwv ntawm cov tshuaj adsorbents) los txhim kho cov neeg siv khoom txaus siab thiab txo qhov kev pheej hmoo ntawm cov khoom thauj.
