Cov Qauv rau Sodium Carboxymethylcellulose / Polyanionic cellulose

Sodium carboxymethylcellulose (CMC) thiab polyanionic cellulose (PAC) yog cov cellulose derivatives uas siv dav hauv ntau yam lag luam, suav nrog zaub mov, tshuaj, tshuaj pleev ib ce, thiab kev khawb roj. Cov ntaub ntawv no feem ntau ua raws li cov qauv tshwj xeeb kom ntseeg tau tias zoo, kev nyab xeeb, thiab kev sib xws hauv lawv daim ntawv thov. Nov yog qee cov qauv feem ntau rau sodium carboxymethylcellulose thiab polyanionic cellulose:

Sodium Carboxymethylcellulose (CMC):

1. Kev Lag Luam Khoom Noj:
   • E466: Qhov no yog lub tshuab suav lej thoob ntiaj teb rau cov khoom noj khoom haus ntxiv, thiab CMC tau muab tus lej E466 los ntawm Codex Alimentarius Commission.
   • ISO 7885: Tus qauv ISO no muab cov lus qhia rau CMC siv rau hauv cov khoom noj, suav nrog cov qauv kev huv thiab cov khoom siv lub cev.
2. Kev Lag Luam Tshuaj:
   • USP/NF: Lub Tebchaws Meskas Pharmacopeia/National Formulary (USP/NF) muaj cov ntawv sau rau CMC, qhia meej txog nws cov yam ntxwv zoo, cov kev cai huv, thiab cov txheej txheem sim rau kev siv tshuaj.
   • EP: European Pharmacopoeia (EP) kuj muaj cov monographs rau CMC, piav qhia txog nws cov qauv zoo thiab cov lus qhia rau kev siv tshuaj.

Polyanionic Cellulose (PAC):

1. Kev Lag Luam Roj Drilling:
   • API Spec 13A: Cov lus qhia no uas tau muab los ntawm American Petroleum Institute (API) muab cov kev cai rau polyanionic cellulose siv ua cov kua dej drilling. Nws suav nrog cov lus qhia rau kev huv, kev faib tawm ntawm cov khoom me me, cov khoom rheological, thiab kev tswj kev lim dej.
   • OCMA DF-CP-7: Tus qauv no, luam tawm los ntawm Lub Koom Haum Cov Khoom Siv Roj (OCMA), muab cov lus qhia rau kev ntsuam xyuas cov polyanionic cellulose siv rau hauv cov ntawv thov drilling roj.

Xaus lus:

Cov qauv ua lub luag haujlwm tseem ceeb hauv kev ua kom ntseeg tau tias qhov zoo, kev nyab xeeb, thiab kev ua tau zoo ntawm sodium carboxymethylcellulose (CMC) thiab polyanionic cellulose (PAC) hauv ntau yam lag luam. Kev ua raws li cov qauv cuam tshuam pab cov chaw tsim khoom thiab cov neeg siv tswj kev sib xws thiab kev ntseeg siab hauv lawv cov khoom thiab daim ntawv thov. Nws yog ib qho tseem ceeb uas yuav tsum xa mus rau cov qauv tshwj xeeb uas siv tau rau kev siv CMC thiab PAC kom ntseeg tau tias muaj kev tswj hwm zoo thiab kev ua raws li txoj cai.