Dab tsi ntawm polyacrylamide muaj? Dab tsi yog qhov txawv?
Qhov tseem ceeb tshaj plaws ntawm polyacrylamide yog nws qhov hnyav molecular, uas tuaj yeem muab faib ua peb qib: qis, nruab nrab thiab siab.Low molecular hnyav yog tsuas yog siv los ua dispersant; nruab nrab qhov hnyav molecular feem ntau yog siv los ua daim ntawv txhawb zog; siab molecular hnyav yog siv dav tshaj plaws thiab feem ntau yog siv los ua flocculant; ultra-siab molecular hnyav yog tsuas yog siv nyob rau hauv lub teb ntawm tertiary rov qab ntawm cov roj teb.
Lwm qhov tseem ceeb ntawm polyacrylamide yog ionicity, uas tuaj yeem muab faib ua anionic, cationic thiab zwitterionic.
Anionic polyacrylamide:Anionic polyacrylamide muaj zog heev electrostatic repulsion ntawm nws tus kheej cov saw txuas tau zoo heev thiab muaj flocculation zoo heev thiab thickening zog.Anions yog tsuas yog siv nyob rau hauv tsawg-tsim kua thiab alkaline xov xwm.
Cation:Cov kev cuam tshuam ntawm cationic nqi ua rau nws muaj zog txhim khu kev qha ntawm cov adsorption kev ua tau zoo ntawm qhov tsis zoo nqi colloids, polymers thiab khoom nto, thiab ua rau kom cov efficiency ntawm polyacrylamide adsorption, adhesion, decolorization thiab flocculation. dej phwj tuaj, sludge, papaermaking sludge thiab lwm yam dej phwj sludge.
Kev piav qhia:Tom qab hydrolysis, nws tsim ib tug zwitterionic tsis xwm yeem polymer nrog zoo thiab tsis zoo nqi ntawm cov molecular saw.Nws yuav siv tau nyob rau hauv ib tug dav ntau yam ntawm pH qhov tseem ceeb, nws combines qhov zoo ntawm cations thiab anions, nws yog ntau dav uaed, thiab cov nyhuv yog zoo dua.
 |  |