Kev kho dej khib nyiab Anionic Powder Polyacrylamide PAM

Anionic Cationic Hmoov Polyacrylamide PAM

Cov polyacrylamide yog dej-solution siab polymer nrog zoo flocculanting kev ua si yuav txo tau cov kev sib txhuam resistanca ntawm cov kua.

1.Flocculation: PAM tuaj yeem ua rau cov khoom raug tshem tawm los ntawm hluav taws xob nruab nrab, ua lub luag haujlwm ntawm flocculation.
2.Adhesiveness: Cov impurities tuaj yeem ua ke ua ke kom ua rau hauv qab.
3.Thickening Agent: Nyob rau hauv neutralizing acidic tej yam kev mob muaj thickening nyhuv, yog hais tias tus nqi PH yog ntau tshaj 10 PAM yooj yim hydrolysis.

Ntawm cov organic polymer flocculants, anionic polyacrylamide (APAM) muaj keeb kwm ntev, cov cuab yeej paub tab thiab siv dav, yog li nws kuj tau them nyiaj ntau dua. Qhov zoo ntawm anionic polyacrylamide yog: tus nqi qis dua cationic polyacrylamide thiab amphoteric polyacrylamide, cov nyhuv flocculation yog qhov zoo, thiab cov txheej txheem yog mature.

Tsis tas li ntawd, vim yog pawg amide nquag ntawm cov saw hlau polymer, pawg anionic carboxyl tuaj yeem ua rau lub cev thiab tshuaj lom neeg nrog ntau yam tshuaj, kom nws muaj kev ua haujlwm zoo heev ntxiv rau cov yam ntxwv ntawm cov saw hlau, thiab siv dav hauv papermaking, ntxhia ua, roj extraction, metallurgy, khoom siv hauv tsev, khoom noj khoom haus, kev kho dej thiab lwm yam lag luam.

Cov txheej txheem synthesis ntawm anionic polyacrylamide yog raws li nram no: homopolymerization tom qab hydrolysis, homopolymerization, copolymerization, thim rov qab-theem emulsion polymerization, nag lossis daus polymerization, hluav taws xob polymerization thiab photopolymerization.

Kev siv hauv kev kho dej:

APAM feem ntau yog siv rau hauv cov txheej txheem kho dej raws li flocculant, uas pab tshem tawm cov khib nyiab thiab lwm yam impurities los ntawm dej. Nws ua haujlwm los ntawm kev tsim tus choj ntawm cov khoom hauv dej, ua rau lawv sib sau ua ke thiab nyob hauv dej.

(1) Adsorbed pa phem

Polyacrylamide muaj zog adsorption muaj peev xwm. Nws muaj peev xwm adsorb pa phem rau nws nto, yog li purifying dej zoo. Lub adsorption ceev ntawm APAM yog ceev thiab cov nyhuv yog zoo kawg li. Tshwj xeeb tshaj yog rau cov dej phwj uas nplua nuj nyob hauv cov hlau hnyav, lub peev xwm adsorption ntawm APAM yog qhov pom tseeb dua.

(2) Catalytic oxidation cov tshuaj tiv thaiv

Ntxiv nrog rau adsorbing pollutants, polyacrylamide tuaj yeem ua rau cov tshuaj tiv thaiv oxidation. Los ntawm kev ntxiv APAM, cov tshuaj tiv thaiv oxidation hauv dej tuaj yeem ua kom nrawm dua, yog li txo cov tshuaj oxygen thov thiab biochemical oxygen xav tau. Qhov no pab txhim kho kev huv ntawm cov dej thiab tiv thaiv lub cev dej kom tsis txhob muaj kuab paug los ntawm cov pa phem uas nplua nuj nyob hauv cov organic pov tseg.

（3) Coagulation

Polyacrylamide tuaj yeem ua lub luag haujlwm coagulation. Thaum APAM ntxiv rau hauv dej, nws khi rau cov pob zeb hauv dej thiab nyob, yog li ntxuav lub cev ntawm cov dej. Rau qee lub cev dej uas muaj cov khoom raug tshem tawm thiab cov organic, cov nyhuv coagulation ntawm APAM yog qhov tshwj xeeb.

(4) Bacteriostatic nkaus

Ntxiv nrog rau cov haujlwm saum toj no, polyacrylamide kuj tseem muaj lub luag haujlwm tseem ceeb hauv kev kho dej hu ua antibacterial action. PAM tuaj yeem tiv thaiv kev tsim cov kab mob thiab cov kab mob hauv dej. Qhov no pab tiv thaiv cov dej kom tsis txhob muaj kab mob thiab kab mob thiab ua kom muaj kev nyab xeeb ntawm cov dej zoo.

(5) Dustproof ua

Polyacrylamide kuj muaj lub luag haujlwm tshwj xeeb, uas yog, cov nyhuv plua plav. Hauv qee qhov chaw tsim khoom, nrog kev pab los ntawm PAM, cov dej khib nyiab tuaj yeem ua kom huv si kom tsis txhob muaj av thiab cov nroj tsuag raug qias neeg los ntawm cov dej phwj tuaj. Txoj haujlwm no muaj lub luag haujlwm tseem ceeb hauv kev tiv thaiv ib puag ncig ecological.

Kev siv hauv papermaking:

APAM kuj tseem siv tau rau hauvtxheej txheem papermaking.Cov ntawv thov tseem ceeb ntawm polyacrylamide hauv kev lag luam ntawv muaj ob yam: ib qho yog txhawm rau txhim kho tus nqi khaws cia ntawm cov additives, pigments, thiab lwm yam, txhawm rau txo qis cov khoom siv raw thiab ib puag ncig muaj kuab paug; Qhov thib ob yog los txhim kho lub zog ntawm daim ntawv.

(1) Txhim kho qhov khaws cia ntawm cov khoom siv raw

Tom qab APAM ntxiv rau lub npov pem hauv ntej los yog impeller twj tso kua mis ntawm cov ntawv ua, cov xim, muab tub lim thiab fiber ntau tau tso thiab lawv cov dej dawb raug txo los ntawm flocculation ntawm APAM. Piv txwv li, tom qab ntxiv 0.25 feem pua ​​-0.5 feem pua ​​APAM rau lub pulp, qhov ceev ceev ntawm daim ntawv yog nce los ntawm 20-80 zaug. Cov ntsiab lus ntawm cov dej dawb yog txo los ntawm kwv yees li 66 feem pua ​​​​, cov ntawv grey scale yog nce, thiab khaws cia tus nqi ntawm cov dej dawb thiab lwm cov fillers yog nce los ntawm 8 feem pua ​​-18 feem pua. Tus nqi khaws cia ntawm qhov muab tub lim tuaj yeem nce los ntawm qhov qub 50 feem pua ​​-60 feem pua ​​​​rau 80 feem pua ​​-90 feem pua ​​.

(2) Ibrove qhuav lub zog thiab ntub lub zog ntawm daim ntawv

Polyacrylamide tuaj yeem siv los ua lub zog qhuav ntxiv rau daim ntawv thiab daim npav. Thaum APAM ntxiv rau daim ntawv, lub zog tensile, folding tsis kam, tawg ua hauj lwm thiab lwm yam qhuav zog zog zoo. Tsis tas li ntawd, kev siv APAM kuj tuaj yeem txhim kho tsim kua muag, porosity, hloov lub zeem muag thiab kev luam ntawv.

(3) Ua kom ruaj khov ntawm daim ntawv slurry

APAM tuaj yeem ua kom muaj kev ruaj ntseg zoo dua ntawm cov roj hmab ntuj ntau dua li polyvinyl cawv, yog li nws yog ib qho zoo thickening tus neeg sawv cev rau latex. Thaum APAM tau ntxiv rau 60 feem pua ​​latex rau ob lub lis piam, viscosity tuaj yeem nce ntxiv los ntawm 1.5-2.0 npaug.

(4) Pigment binder rau ntawv txheej
PAM thiab hmoov txhuv nplej siab tau muab sib xyaw rau hauv qhov sib piv ntawm 1∶2 los siv los ua ib qho khoom zoo hauv daim ntawv txheej

(5) Daim ntawv tiav tus neeg sawv cev
Cov tshuaj tiv thaiv ntawm PAM thiab dialdehyde tuaj yeem tau txais dej insolubility, thiab cov cuab yeej no tuaj yeem siv rau hauv cov ntawv txheej.

Vim lub hom phiaj sib txawv ntawm PAM siv hauv kev lag luam ntawv, cov kev xav tau rau cov txheeb ze molecular hnyav thiab carboxyl pawg ntsiab lus (degree ntawm hydrolysis) ntawm cov polymer kuj txawv. Yog li APAM muaj kev siv dav hauv cov txheej txheem papermaking.

Kev siv hauv kev ua liaj ua teb:

Ntxiv nrog rau nws daim ntawv thov daim ntawv, APAM kuj tau siv rau hauvkev ua liaj ua teb raws li cov av txias thiab ua ib qho kev txo cov av yaig. Nws tuaj yeem tsis tsuas yog kev txuag hluav taws xob, dej tuav, tab sis kuj txhim kho cov qauv av, kom nws cov xwm txheej hauv kev ua liaj ua teb maj mam nce.

(1) Thawjhais tias yog lub rwb thaiv tsev muaj nuj nqi ntawm polyacrylamide. Tom qab siv tus neeg sawv cev hauv kev ua liaj ua teb, nws tuaj yeem cuam tshuam qhov nce thiab poob ntawm av kub. Tom qab daim ntawv thov ntawm polyacrylamide nyob rau hauv cov av, cov dej absorbed los ntawm cov av tuaj yeem tswj qhov kub thiab txias thaum hmo ntuj los ntawm insisting rau lub tshav kub lub zog tsim los ntawm nruab hnub nrig teeb, uas txo qhov kub ntawm qhov sib txawv nruab hnub thiab hmo ntuj.

(2) Thib ob,Cia peb saib cov dej tuav haujlwm ntawm polyacrylamide. Thaum polyacrylamide siv rau hauv kev ua liaj ua teb, nws tuaj yeem tswj cov dej ntws tawm tom qab flocculation, uas tuaj yeem tsis tsuas yog txhawb nqa tag nrho cov ntsiab lus ntawm cov av, tab sis kuj txo cov dej tag nrho ntawm cov av. Nyob rau hauv txoj kev no, nws tuaj yeem ua kom nrawm nrawm ntawm cov dej tso tawm los ntawm cov av, kom cov av noo noo yog soaked thiab oozed thiab ploj, thiab kev ua haujlwm ntawm dej tuav tau mus txog.

(3) Thaum kawg,polyacrylamide yog siv rau hauv kev ua liaj ua teb, thiab muaj cov nyhuv ntawm kev tswj cov chiv thiab txhim kho cov qauv av. Polyacrylamide muaj cov nyhuv absorbing thiab khaws cov ntsiab lus dej, uas tuaj yeem yaj cov chiv hauv dej thiab txo cov leaching poob ntawm cov as-ham soluble.

Daim ntawv thov hauv roj teb:

Feem ntau, APAM feem ntau siv nyob rau hauv lubroj tebvim nws cov hauj lwm zoo li flocculant thiab nws lub peev xwm los txhim kho cov khoom rheological ntawm cov kua dej drilling. Txawm li cas los xij, CPAM kuj tseem tuaj yeem ua tau zoo hauv qee cov ntawv thov thiab tej zaum yuav nyiam nyob rau qee kis. Qhov kev xaiv ntawm hom polyacrylamide siv yog nyob ntawm qhov kev xav tau tshwj xeeb thiab cov xwm txheej ntawm kev lag luam roj.

Anion polyacrylamide dej nyab mechanism:

（1）Anionic polyacrylamide muaj cov dej solubility siab thiab siab molecular saw viscosity, uas tuaj yeem txhim kho qhov sib piv ntawm cov kua dej txav mus los, txhim kho kev khiav hauj lwm zoo thiab hws ntim, thiab txhim kho cov roj rov qab.

（2）Anionic polyacrylamide polymer kua txhim kho cov viscoelasticity ntawm cov roj thiab dej, ua cov roj tee los yog roj zaj duab xis yooj yim rau deform, uas tuaj yeem txhim kho cov nyhuv ntawm cov roj microscopic thiab txhim kho cov roj rov qab los ntawm ntau qhov pores.

（3）Anionic polyacrylamide tuaj yeem txo cov roj ntws sib piv ntawm cov roj reservoir, hloov cov ntws ntws nkhaus, txo cov dej ntawm cov roj ntau lawm, thiab txhim kho cov roj rov qab ceev.

（4）Anionic polyacrylamide APAM txhim kho qhov viscous taw tes tshwm sim ntawm dej nyab hauv heterogeneous kab rov tav dav hlau thiab txhim kho qhov cheb efficiency hauv lub dav hlau ntau. Nyob rau hauv txoj kab ntsug, siv lub siab viscosity ntawm anionic polyacrylamide, cov dej tom qab dej nyab los ntawm cov txheej txheem siab permeability mus rau qhov qis permeability txheej, ua rau cov dej nqus cov tuab thiab nthuav dav cov ntsug cheb efficiency.

（5）Anionic polyacrylamide molecular saw muaj hydrophilic zog. Thaum APAM polymer dhau los ntawm qhov nruab nrab ntxeem tau, nws cov adsorption thiab cov cuab yeej cuab tam tuaj yeem siv los hloov cov void permeability, tab sis nws muaj me ntsis cuam tshuam rau cov roj theem permeability thiab tsis thaiv dej.