1. Kev Taw Qhia
Hydroxyethyl Cellulose (HEC) yog cov khoom siv polymer uas tsis yog ionic uas yaj tau hauv dej los ntawm kev sib xyaw ntawm cov cellulose ntuj thiab ethylene oxide. Vim nws cov khoom siv lub cev thiab tshuaj lom neeg tshwj xeeb, xws li kev yaj dej zoo, thickening, zaj duab xis tsim, kev ruaj khov thiab kev ncua kev kawm, HEC tau siv dav hauv kev lag luam tshuaj lom neeg.
2. Cov Ntawv Thov
2.1 Kev Lag Luam Txheej
Hauv kev lag luam txheej, HEC feem ntau yog siv los ua cov khoom siv thickener thiab rheology modifier. Nws cov haujlwm suav nrog:
Txhim kho qhov sib xws thiab rheology ntawm lub txheej: HEC tuaj yeem tswj tau tus cwj pwm rheological ntawm lub txheej, txhim kho kev ua tau zoo ntawm kev tsim kho, ua rau lub txheej tsis tshua muaj zog, thiab yooj yim txhuam thiab dov.
Txhim kho qhov ruaj khov ntawm lub txheej: HEC muaj cov dej solubility zoo heev thiab kev tiv thaiv colloidal, uas tuaj yeem tiv thaiv cov sedimentation ntawm cov xim thiab stratification ntawm lub txheej, thiab txhim kho qhov ruaj khov ntawm lub txheej.
Txhim kho cov khoom ua yeeb yaj kiab ntawm cov txheej txheej: HEC tuaj yeem tsim ib zaj duab xis sib xws thaum lub sijhawm ziab ntawm cov txheej txheej, txhim kho lub zog npog thiab ci ntsa iab ntawm cov txheej txheej.
2.2 Kev lag luam roj av
Hauv cov txheej txheem ntawm kev khawb roj thiab kev tsim roj, HEC feem ntau yog siv los ua cov khoom siv ntxiv rau cov kua dej thiab cov kua dej tawg. Nws cov haujlwm suav nrog:
Thickening thiab suspension: HEC tuaj yeem ua rau kom cov viscosity ntawm cov kua drilling thiab fracturing fluid ntau ntxiv, ua kom cov cuttings thiab proppants zoo, tiv thaiv kom tsis txhob muaj dej ntws thiab ua kom cov roj zoo ntau ntxiv.
Kev tswj kev lim dej: HEC tuaj yeem tswj tau qhov kev lim dej ntawm cov kua dej drilling, txo cov pa phem, thiab txhim kho kev ruaj khov thiab kev tsim khoom ntawm cov roj qhov dej.
Kev hloov kho rheological: HEC tuaj yeem txhim kho rheology ntawm cov kua dej drilling thiab cov kua dej tawg, txhim kho nws cov peev xwm nqa xuab zeb, thiab txhim kho kev ua haujlwm zoo thiab cov txiaj ntsig ntawm kev ua haujlwm tawg.
2.3 Kev lag luam tsim kho
Hauv kev lag luam kev tsim kho, HEC feem ntau siv rau hauv cov cement mortar, gypsum khoom thiab latex xim. Nws cov haujlwm tseem ceeb suav nrog:
Kev ua kom tuab thiab khaws dej: HEC tuaj yeem txhim kho qhov sib xws ntawm cov mortar thiab gypsum, ua kom muaj kev ua haujlwm ntau dua thaum lub sijhawm tsim kho, thiab txhim kho nws cov dej khaws cia, tiv thaiv kev poob dej, thiab txhim kho lub zog sib txuas.
Tiv thaiv kev sagging: Hauv cov xim latex, HEC tuaj yeem tiv thaiv cov xim kom tsis txhob sagging ntawm cov nto ntsug, khaws cov txheej txheem sib xws, thiab txhim kho kev tsim kho zoo.
Kev sib txuas zoo dua: HEC tuaj yeem txhim kho kev sib txuas ntawm cov cement mortar thiab substrate, ua rau lub zog thiab kev ua haujlwm ntawm cov khoom siv.
2.4 Kev Lag Luam Tshuaj Txhua Hnub
Cov kev siv tseem ceeb ntawm HEC hauv cov khoom siv tshuaj txhua hnub suav nrog kev siv ua cov khoom tuab, stabilizer thiab emulsifier rau cov tshuaj ntxuav tes, tshuaj zawv plaub hau, tshuaj pleev thiab tshuaj pleev ib ce. Nws cov haujlwm suav nrog:
Thickening: HEC tuaj yeem ua rau kom cov viscosity ntawm cov khoom siv tshuaj txhua hnub nce ntxiv, ua rau cov khoom zoo nkauj thiab zoo siv.
Kev Ruaj Ntseg: HEC muaj cov dej solubility zoo thiab kev tiv thaiv colloid, tuaj yeem tswj lub kaw lus emulsified, tiv thaiv kev sib cais roj-dej, thiab txuas lub neej txee ntawm cov khoom.
Kev Ncua: HEC tuaj yeem ncua cov khoom me me, txhim kho qhov kev sib kis thiab kev sib xws ntawm cov khoom, thiab txhim kho qhov tsos thiab kev ntxhib los mos.
2.5 Kev Lag Luam Tshuaj
Hauv kev lag luam kws tshuaj, HEC feem ntau yog siv los ua tus binder thiab tus neeg sawv cev tso tawm, tus neeg sawv cev gelling thiab emulsifier rau cov ntsiav tshuaj. Nws cov haujlwm suav nrog:
Kev khi: HEC tuaj yeem khi cov tshuaj me me thiab txhim kho lub zog kho tshuab thiab kev ua haujlwm tawg ntawm cov ntsiav tshuaj.
Kev tso tawm tas mus li: HEC tuaj yeem hloov kho qhov kev tso tawm tshuaj, ua tiav cov teebmeem tso tawm tas mus li lossis tswj tau, thiab txhim kho kev ua haujlwm ntawm cov tshuaj thiab kev ua raws li tus neeg mob.
Gel thiab emulsification: HEC tuaj yeem tsim ib qho gel lossis emulsion hauv cov tshuaj formulation, txhim kho qhov ruaj khov thiab saj ntawm cov tshuaj.
3. Cov txiaj ntsig thiab cov yam ntxwv
3.1 Cov khoom tuab thiab rheological zoo heev
HEC muaj peev xwm ua kom tuab thiab hloov pauv rheological zoo heev, uas tuaj yeem ua rau cov viscosity ntawm cov kua dej ntau ntxiv, ua rau lawv ua haujlwm zoo li cov kua dej pseudoplastic ntawm cov nqi qis shear thiab Newtonian kua dej ntawm cov nqi siab shear. Qhov no ua rau nws ua tau raws li cov kev xav tau rheological ntawm ntau yam kev siv hauv kev lag luam.
3.2 Kev Ruaj Ntseg thiab kev sib haum xeeb
HEC muaj kev ruaj khov tshuaj zoo, tuaj yeem tswj tau kev ua haujlwm ruaj khov ntawm ntau yam pH, thiab sib xws nrog ntau yam tshuaj thiab cov kuab tshuaj. Qhov no ua rau nws tswj tau qhov ruaj khov thiab ruaj khov hauv cov txheej txheem tshuaj lom neeg nyuaj.
3.3 Kev tiv thaiv ib puag ncig thiab kev nyab xeeb
HEC yog ua los ntawm cov cellulose ntuj, muaj kev puas tsuaj zoo rau ib puag ncig thiab yog tus phooj ywg ib puag ncig. Tib lub sijhawm, HEC tsis muaj tshuaj lom thiab tsis ua rau muaj kev phom sij, thiab tsim nyog rau cov tshuaj lom neeg txhua hnub thiab cov tshuaj uas muaj kev nyab xeeb siab.
Hydroxyethyl cellulose (HEC) muaj ntau yam kev siv thiab ua lub luag haujlwm tseem ceeb hauv kev lag luam tshuaj lom neeg. Nws cov thickening zoo heev, rheological zog, stability thiab compatibility ua rau nws yog ib qho tseem ceeb additive hauv ntau yam lag luam xws li coatings, roj av, kev tsim kho, tshuaj txhua hnub thiab tshuaj. Nrog rau kev txhim kho ntawm technology thiab kev hloov pauv ntawm kev thov ua lag luam, daim ntawv thov ntawm HEC yuav dav dua.
Lub sijhawm tshaj tawm: Lub Xya Hli-09-2024