Polyanionic cellulose (PAC) thiab sodium carboxymethyl cellulose (cmc)

Polyanionic cellulose (PAC) thiab sodium carboxymethyl cellulose (CMC) yog ob qho kev lag luam hauv ntau yam kev lag luam rau lawv cov thickening, ruaj khov, thiab rhuab hluav taws xob. Thaum lawv qhia qee yam sib xws, lawv kuj muaj qhov sib txawv ntawm cov qauv tshuaj, khoom, thiab kev siv. Ntawm no yog qhov sib piv ntawm PAC thiab CMC:

1. Tus qauv tshuaj:
   • PAC: polyanionic cellulose yog dej-soluble polymer muab tau los ntawm cellulose los ntawm cov carboxymethyl thiab lwm pawg anionic mus rau lub cellulose pawg. Nws muaj ntau pawg carboxyl pawg (-coo-) raws cellulose saw, ua rau nws anionic heev.
   • CMC: Sodium CarbiSylethyl cellulose tseem yog cov txheej txheem dej-soluble los ntawm cov pab pawg carboxymowylation,, pab pawg ntawm cov roj av. CMC feem ntau muaj cov roj carboxyl tsawg dua piv rau PAC.
2. Ionic Xwm:
   • PAC: polyanionic cellulose yog anionic heev vim muaj ntau cov pab pawg carboxyl raws lub cellulose saw. Nws ua pov thawj muaj zog ion-txauv khoom thiab feem ntau siv los ua cov neeg sawv cev txhawb nqa thiab rheology cov lus hloov hauv cov dej lim dej.
   • CMC: Sodium CarbiSylethyl cellulose kuj yog anionic, tab sis nws cov qib ntawm anionicity nyob ntawm tus degree ntawm kev hloov pauv (DS) ntawm Carboxymethyl pawg. CMC yog ib txwm siv los ua cov tuab, stabilizer, thiab viscosity concegories hauv ntau yam kev siv, suav nrog cov zaub mov, cov khoom noj, thiab cov khoom lag luam.
3. Viscosity thiab rheology:
   • PAC: polyanionic cellulose cov cwj pwm siab viscosity thiab ua kom nws zoo li kev siv tshuab tuab thiab rheology thiab rho tawm cov ntawv thov tshuab. PAC tuaj yeem tiv thaiv kom muaj qhov kub thiab txias thiab cov qib salinity pom hauv cov haujlwm oilfield.
   • CMC: Sodium carboxymethyl cellulose tseem ceeb ua pov thawj viscosity thiab rheology hloov kho cov khoom, tab sis nws cov viscosity yog feem ntau ua kom tsawg dua li PAC. CMC cov foos kom ruaj khov thiab pseudoplastic daws, ua rau nws haum rau ntau cov ntawv thov, suav nrog cov zaub mov, suav nrog cov zaub mov, tshuaj pleev ib ce, thiab tshuaj kom zoo nkauj.
4. Cov Ntawv Thov:
   • PAC: polyanionic cellulose feem ntau siv nyob rau hauv cov roj thiab roj kev lag luam raws li kev tswj hwm kev tswj hwm, rheology kho cov roj, thiab kua dej kom txo tau cov kua dej drilling. Nws kuj yog siv rau lwm cov ntawv thov xws li kev tsim kho cov ntaub ntawv thiab kev kho kom ib puag ncig.
   • CMC: Sodium Carboxymethyl cellulose muaj ntau yam kev lag luam, cov khoom siv ua kom tuab (raws li cov khoom siv dag zog (raws li cov neeg sawv cev ntawm cov khoom noj) , thiab cov ntawv tsim khoom (ua ib daim ntawv additive).

Thaum ob leeg polyanionic cellulose (PAC) thiab sodium carboxymethyl cellulose thiab cov kev sib txawv hauv qee cov kev lag luam, cov khoom siv, thiab cov ntawv thov tshwj xeeb. PAC feem ntau siv nyob rau hauv cov roj thiab roj kev lag luam, thaum cmc pom dav cov khoom siv hauv cov zaub mov, cov tshuaj, cov kheej, thiab lwm yam lag luam.