1. Pib
Hydroxyethyl cellulose (HEC) yog cov dej tsis-ionic-soluble polymer tsim los ntawm cov tshuaj tiv thaiv ntawm ntuj cellulose thiab ethylene oxide. Vim nws lub cev nqaij daim tawv thiab tshuaj lom neeg, xws li cov dej solubility zoo, thickening, zaj duab xis-ua yeeb yaj kiab, HEC tau siv dav hauv kev lag luam tshuaj lom neeg.
2. Daim Ntawv Thov
2.1 Kev Lag Luam Txheej
Nyob rau hauv txheej kev lag luam, HEC feem ntau yog siv los ua cov tuab thiab rheology kho dua tshiab. Nws cov haujlwm muaj xws li:
Txhim kho qhov sib txawv thiab rheology ntawm cov txheej txheem: HEC tuaj yeem tswj cov kev coj ua zoo ntawm cov kev coj ua, ua kom cov txheej kev tsim kho, ua kom cov txheej txheem kev tsim kho, thiab yooj yim los txhuam thiab yob.
Txhim kho qhov ruaj ntseg ntawm cov txheej txheem: HEC muaj kev tiv thaiv zoo heev thiab colloidal tiv thaiv, thiab txhim kho cov khoom khaws cia ntawm cov txheej.
Txhim kho cov khoom ua yeeb yaj kiab ntawm cov duab ua yeeb yaj kiab ntawm cov yeeb yaj kiab: HEC tuaj yeem tsim cov yeeb yaj kiab tsis zoo thaum lub zog ua kom qhuav, txhim kho cov txheej txheem npog thiab ntuj ntawm txheej.
2.2 Kev Lag Luam Roj
Nyob rau hauv cov txheej txheem ntawm roj drilling thiab cov roj ntau lawm siv tau ua cov khoom ntxiv rau cov kua dej thiab cov kua dej sib xyaw. Nws cov haujlwm muaj xws li:
Thickening thiab raug tshem tawm: HEC tuaj yeem ua kom cov kua viscosity thiab cov khoom siv sib tsoo kom tiv thaiv kom zoo thiab nce roj kom zoo.
Kev tswj pom kev tswj hwm: HEC tuaj yeem tswj tau cov kev poob ntawm cov kua dej, txo cov kuab paug, thiab muaj peev xwm txhim kho kev ruaj khov thiab tsim tau cov roj ua kom zoo.
Rheological hloov kho: HEC tuaj yeem txhim kho cov rheyology ntawm drilling kua thiab fracturing kua, thiab txhim kho kev ua haujlwm tau zoo.
2.3 Kev Tsim Kho Kev Tsim Kho
Hauv kev tsim kho kev tsim kho, HEC feem ntau siv nyob rau hauv xis mas cug, gypsum khoom thiab latex xim. Nws lub ntsiab ua haujlwm suav nrog:
Thickening thiab dej khaws cia: HEC tuaj yeem txhim kho kev sib khib ntawm kev tsim kho, thiab txhim kho nws cov dej tsis sib haum, tiv thaiv kom tsis txhob muaj zog dej, thiab ua kom muaj zog.
Los tiv thaiv: Sagging: hauv looj xim, HEC tuaj yeem tiv thaiv cov xim los ntawm sagging ntawm qhov chaw ntsug, thiab txhim kho kev tsim kho zoo.
Txhim Kho Kev Ua Haujlwm: HEC tuaj yeem txhim kho txoj kev sib raug zoo ntawm Ceg Cug thiab cov substrate thiab ua kom muaj zog, ua kom muaj zog thiab kav ntev ntawm cov khoom siv.
2.4 kev lag luam tshuaj txhua hnub
Lub ntsiab siv ntawm HEC hauv cov khoom lag luam txhua hnub suav nrog siv los ua cov thickener, saspaifier rau tshuaj ntxuav, tshuaj zawv plaub hau, lotions thiab tshuaj pleev ib ce. Nws cov haujlwm muaj xws li:
Thickening: HEC muaj peev xwm nce cov khoom lag luam viscosity ntawm cov khoom siv tshuaj lom txhua hnub, ua cov khoom lag luam muag huv thiab zoo siv.
Stabilization: HEC muaj cov dej ua kom zoo thiab muaj peev xwm tswj cov txheej txheem emulsified, tiv thaiv cov roj-dej sib cais, thiab txuas ntxiv rau lub neej txee ntawm cov khoom.
Kev Ncua: HEC tuaj yeem ncua cov khoom ncua zoo, txhim kho cov dispersion thiab kev sib xyaw ntawm cov khoom lag luam, thiab txhim kho cov tsos thiab kev ntxhib los mos.
2.5 Pharmetical Kev Lag Luam
Hauv kev lag luam kws tshuaj, HEC feem ntau yog siv los ua phau ntawv binder thiab nqi zog-tso tawm tus neeg sawv cev, tus neeg saib xyuas tus neeg sawv cev thiab emulsifier rau cov ntsiav tshuaj. Nws cov haujlwm muaj xws li:
Kev khi lus: HEC muaj peev xwm ua tau zoo siv tshuaj yeeb thiab txhim kho cov tshuab ua kom muaj zog thiab disintegration kev ua haujlwm ntawm cov ntsiav tshuaj.
Kev tso tawm kev tso tawm: HEC tuaj yeem hloov kho cov tshuaj tso tawm, ua tiav kev cuam tshuam lossis kev ua kom muaj kev cuam tshuam nrog thiab ua kom muaj kev ua raws kev noj haus thiab neeg mob ua kom muaj kev lom zem.
Gel thiab emulsification: Hec tuaj yeem tsim cov khoom siv gel lossis emulsion hauv cov yeeb tshuaj yeeb, txhim kho cov kev ruaj ntseg thiab saj ntawm cov tshuaj.
3. Qhov zoo thiab cov yam ntxwv
3.1 thickening zoo heev thiab rheological khoom
HEC muaj cov peev txheej hloov kho kom zoo dua qub, ua rau muaj kev daws teeb meem ntawm cov kua dej uas muaj ntsev thiab cov kua dej tshiab ntawm cov nqi siab. Qhov no ua rau nws kom tau raws li lub rheological yuav tsum muaj ntau cov ntawv thov kev lag luam.
3.2 Kev ruaj khov thiab kev sib raug zoo
HEC muaj tshuaj ruaj khov khov kho, tuaj yeem tswj tau ruaj khov ua tau zoo tshaj li ntau ntau, thiab yog sib xws nrog ntau yam tshuaj thiab cov kuab tshuaj. Qhov no ua rau nws tswj hwm cov tuab tuab thiab ruaj khov hauv cov khoom siv nyuaj.
3.3 Kev tiv thaiv ib puag ncig thiab kev nyab xeeb
Hec yog ua los ntawm cov pob zeb ntuj ntawm lub ntsej muag, muaj cov txiaj ntsig biodegradability thiab yog ib puag ncig phooj ywg. Nyob rau tib lub sijhawm, HEC yog tsis muaj tshuaj lom thiab tsis muaj mob, thiab yog qhov tsim nyog rau txhua yam tshuaj lom neeg thiab cov ntaub ntawv nrog cov kev nyab xeeb.
Hydroxyethyl cellulose (HEC) muaj ntau cov ntawv thov thiab ua lub luag haujlwm tseem ceeb hauv kev lag luam tshuaj. Nws cov zoo heev thickening, rheological cov khoom, kev ruaj khov thiab sib xyaw ua ke nyob rau ntau yam kev lag luam, kev tsim kho, tshuaj lom zem txhua hnub thiab tshuaj txhua hnub. Nrog kev txhim kho thev naus laus zis thiab kev hloov pauv hauv kev lag luam xav tau, daim ntawv thov kev cia siab ntawm HEC yuav yog dav.
Lub Sijhawm Post: Jul-09-2024