Qhov twg ntawm 5 cov ntaub ntawv ntawm rov qab osmosis membranes koj tsis paub?
01
Cellulose acetate membrane (CA membrane daim ntawv)
Cellulose acetate yog xoob dawb particle los yog fiber ntau hmoov, tsw ntxhiab, tsis muaj tshuaj lom, lub teeb ruaj khov, thiab hygroscopic heev. Tam sim no nws yog ib qho kev kawm dav dav rov qab osmosis membrane khoom. Txawm hais tias cellulose acetate yog cov khoom siv membrane zoo, cov - COOR hauv nws cov saw molecular ua rau nws yooj yim rau hydrolyze nyob rau hauv qhov kub thiab txias thiab acid-base tej yam kev mob, thiab alkaline los yog acidic hydrolysis yuav ua rau cov acetyl pab pawg neeg ploj. Yog li, kev siv cov ntaub ntawv CA ntshiab yog raug rau qee yam kev txwv.
02 ib
Aromatic polyamide zaj duab xis (PA membrane ntawv)
Aromatic polyamides yog dav siv nyob rau hauv lub membrane kev lag luam vim lawv lub cev thiab tshuaj stability, kuj muaj zog alkalis, roj esters, thiab organic solvents, thiab zoo mechanical zog. Txawm li cas los xij, vim qhov raug nqi ntawm PA daim nyias nyias ua haujlwm ntawm pH 6-10, cov khoom hauv dej yog nquag tso rau saum npoo ntawm daim nyias nyias, txo nws txoj kev pab cuam lub neej.
03
Chitosan membrane (CS membrane daim ntawv)
Chitosan (CS) yog tau los ntawm kev tshem tawm acetyl pawg los ntawm chitosan molecules. Nws muaj ntau qhov chaw, zoo zaj duab xis-tsim cov khoom thiab biocompatibility, thiab yog ib qho yooj yim rau chemically hloov. Vim nws cov qauv molecular, cov dej ntshiab siv nyob rau hauv thim rov qab osmosis tuaj yeem tsim muaj zog hydrogen bonds nrog dej molecules, thiab nws muaj peev xwm tshem tawm alkaline ntiaj teb hlau ions muaj zog. Yog li ntawd, nws yog qhov zoo tshaj rau CA daim nyias nyias thiab polyamide daim nyias nyias thiab suav hais tias yog cov khoom siv zoo heev membrane, uas tau txais kev saib xyuas thoob ntiaj teb. Cs rov qab osmosis daim nyias nyias muaj cov flux siab thiab xaiv, thiab muaj kev tshem tawm zoo ntawm divalent hlau ntsev. Vim nws muaj zog alkali tsis kam thiab acid tsis kam tom qab kev sib txuas, Cs daim nyias nyias tsis yooj yim tuaj yeem tsim cov kab mob thiab feem ntau siv los ua rov qab osmosis membranes rau softening cov dej nyuaj.
04 ib
Polyphenylene rov qab osmosis membrane
Polyphenylene cov ntaub ntawv xws li polybenzimidazole (PBD) thiab polyphenylene oxide (PPO) kuj tau txais kev saib xyuas thoob plaws vim lawv qhov kub thiab txias tsis kam, acid thiab alkali tsis kam, thiab tuaj yeem hloov kho kom tau txais cov ntaub ntawv nyias nyias.
05
Lwm cov ntaub ntawv rov qab osmosis membranes
Composite thim rov qab osmosis membrane yog ib hom ntawm daim nyias nyias uas ua ke ib txheej nyias, ntom ntawm cov ntaub ntawv sib txawv nrog tshwj xeeb kev sib cais ua haujlwm ntawm ib qho ntxeem tau substrate. Nws muaj qhov sib cais ntau dua thiab cov dej nkag mus ntau dua li cov khoom sib xyaw ua ke, thiab yog li ntawd muaj kev lag luam feem ntau tshaj 90%. Tam sim no, composite thim rov qab osmosis daim nyias nyias tau siv dav hauv kev lag luam xws li petrochemicals, electronics, textiles, light industry, metallurgy, tshuaj, biotechnology, zaub mov, thiab kev tiv thaiv ib puag ncig.