1. Taw qhia
Hydroxyethyl Cellulose (HEC) yog cov khoom siv tsis-ionic dej-soluble polymer uas tsim los ntawm cov tshuaj tiv thaiv ntawm ntuj cellulose thiab ethylene oxide. Vim nws cov khoom tshwj xeeb ntawm lub cev thiab tshuaj lom neeg, xws li dej solubility zoo, thickening, film-forming, stability thiab suspension muaj peev xwm, HEC tau siv dav hauv kev lag luam tshuaj.
2. Daim ntawv thov teb
2.1 Txheej kev lag luam
Hauv kev lag luam txheej, HEC feem ntau yog siv los ua cov thickener thiab rheology hloov kho. Nws cov haujlwm muaj xws li:
Txhim kho qhov sib xws thiab rheology ntawm txheej txheej: HEC tuaj yeem tswj hwm tus cwj pwm rheological ntawm txheej txheej, txhim kho kev tsim kho kev ua haujlwm, ua rau cov txheej txheem tsis tshua muaj sag, thiab yooj yim rau txhuam thiab yob.
Txhim kho qhov ruaj khov ntawm cov txheej: HEC muaj cov dej solubility zoo heev thiab kev tiv thaiv colloidal, uas tuaj yeem tiv thaiv tau cov sedimentation ntawm cov xim thiab stratification ntawm txheej, thiab txhim kho kev ruaj ntseg ntawm cov txheej.
Txhim kho cov yeeb yaj kiab-txhim kho cov khoom ntawm cov txheej txheej: HEC tuaj yeem tsim cov yeeb yaj kiab tsis sib xws thaum lub sijhawm ziab ntawm txheej txheej, txhim kho lub zog npog thiab gloss ntawm txheej.
2.2 Petroleum kev lag luam
Nyob rau hauv cov txheej txheem ntawm cov roj drilling thiab roj ntau lawm, HEC yog tsuas yog siv los ua ib qho additive rau drilling kua thiab fracturing kua. Nws cov haujlwm muaj xws li:
Thickening thiab suspension: HEC tuaj yeem ua kom cov viscosity ntawm cov kua dej drilling thiab cov kua dej tawg, ua haujlwm zoo tshem tawm cov laum txiav thiab cov khoom siv, tiv thaiv kev sib tsoo zoo thiab ua kom cov roj zoo ntau lawm.
Kev tswj kom pom: HEC tuaj yeem tswj tau qhov pom kev poob ntawm cov dej drilling, txo qhov tsim muaj kuab paug, thiab txhim kho qhov ruaj khov thiab muaj peev xwm ntawm cov roj qhov dej.
Kev hloov kho Rheological: HEC tuaj yeem txhim kho cov rheology ntawm cov kua dej drilling thiab cov kua dej tawg, txhim kho nws cov xuab zeb nqa peev xwm, thiab txhim kho kev ua haujlwm thiab cov txiaj ntsig ntawm kev ua haujlwm tawg.
2.3 Kev tsim kho kev lag luam
Hauv kev tsim kho kev lag luam, HEC feem ntau yog siv rau hauv cov cement mortar, gypsum khoom thiab latex xim. Nws lub luag haujlwm tseem ceeb suav nrog:
Thickening thiab dej tuav: HEC tuaj yeem txhim kho qhov sib xws ntawm mortar thiab gypsum, nce kev ua haujlwm ntawm kev tsim kho, thiab txhim kho nws cov dej tuav, tiv thaiv dej poob, thiab txhim kho kev sib raug zoo.
Anti-sagging: Hauv cov xim latex, HEC tuaj yeem tiv thaiv cov xim los ntawm sagging ntawm ntsug nto, ua kom cov txheej txheej, thiab txhim kho kev tsim kho kom zoo.
Txhim kho kev sib raug zoo: HEC tuaj yeem txhim kho kev sib txuas ntawm cov cement mortar thiab substrate, ua kom lub zog thiab ruaj khov ntawm cov khoom.
2.4 Kev Lag Luam Tshuaj Txhua Hnub
Kev siv tseem ceeb ntawm HEC hauv cov khoom siv tshuaj niaj hnub suav nrog kev siv cov thickener, stabilizer thiab emulsifier rau detergents, tshuaj zawv plaub hau, tshuaj pleev ib ce thiab tshuaj pleev ib ce. Nws cov haujlwm muaj xws li:
Thickening: HEC tuaj yeem ua kom cov viscosity ntawm cov khoom siv tshuaj txhua hnub, ua rau cov khoom zoo nkauj thiab zoo siv.
Stabilization: HEC muaj dej solubility zoo thiab kev tiv thaiv colloid, tuaj yeem ua kom ruaj khov ntawm emulsified system, tiv thaiv cov roj-dej sib cais, thiab txuas ntxiv lub txee lub neej ntawm cov khoom.
Ncua tseg: HEC tuaj yeem tshem tawm cov khoom zoo, txhim kho qhov sib txawv thiab sib xws ntawm cov khoom, thiab txhim kho cov tsos thiab kev ntxhib los mos.
2.5 Pharmaceutical Industry
Hauv kev lag luam kws tshuaj, HEC feem ntau yog siv los ua ib qho kev sib khi thiab kev tso tawm tus neeg sawv cev, gelling tus neeg sawv cev thiab emulsifier rau cov ntsiav tshuaj. Nws cov haujlwm muaj xws li:
Kev khi: HEC tuaj yeem khi cov khoom siv tshuaj zoo thiab txhim kho cov neeg kho tshuab lub zog thiab kev ua haujlwm tsis zoo ntawm cov ntsiav tshuaj.
Kev tso tawm tsis tu ncua: HEC tuaj yeem kho tus nqi tso tawm tshuaj, ua tiav los yog tswj kev tso tawm, thiab txhim kho kev siv tshuaj thiab kev ua raws li tus neeg mob.
Gel thiab emulsification: HEC tuaj yeem tsim ib qho gel lossis emulsion hauv cov tshuaj tsim, txhim kho kev ruaj ntseg thiab saj ntawm cov tshuaj.
3. Qhov zoo thiab cov yam ntxwv
3.1 Zoo heev thickening thiab rheological zog
HEC muaj qhov ua kom tuab zoo thiab muaj peev xwm hloov kho rheological, uas tuaj yeem ua rau muaj qhov sib txawv ntawm cov dej hauv cov kua dej, ua rau lawv coj li cov kua pseudoplastic ntawm cov nqi qis thiab cov kua Newtonian ntawm cov nqi shear siab. Qhov no ua rau nws ua tau raws li cov kev cai rheological ntawm ntau yam kev siv hauv kev lag luam.
3.2 Stability thiab compatibility
HEC muaj cov tshuaj lom neeg ruaj khov zoo, tuaj yeem tswj xyuas kev ua haujlwm ruaj khov tshaj pH ntau yam, thiab sib xws nrog ntau yam tshuaj thiab cov kuab tshuaj. Qhov no ua rau nws muaj kev ruaj khov thickening thiab stabilizing nyhuv nyob rau hauv complex chemical systems.
3.3 Kev tiv thaiv ib puag ncig thiab kev nyab xeeb
HEC yog tsim los ntawm ntuj cellulose, muaj biodegradability zoo thiab yog ib puag ncig tus phooj ywg. Nyob rau tib lub sijhawm, HEC tsis muaj tshuaj lom thiab tsis muaj mob, thiab tsim nyog rau cov khoom siv tshuaj thiab tshuaj txhua hnub nrog kev nyab xeeb siab.
Hydroxyethyl cellulose (HEC) muaj ntau yam kev siv thiab ua lub luag haujlwm tseem ceeb hauv kev lag luam tshuaj. Nws zoo heev thickening, rheological zog, stability thiab compatibility ua rau nws ib tug tseem ceeb additive nyob rau hauv ntau industries xws li coatings, roj av, kev tsim kho, niaj hnub tshuaj thiab tshuaj. Nrog rau kev txhim kho thev naus laus zis thiab kev hloov pauv hauv kev xav tau ntawm kev lag luam, daim ntawv thov kev cia siab ntawm HEC yuav dav dua.
Lub sij hawm xa tuaj: Plaub Hlis-09-2024