Carboxymethyl cellulose (CMC) yog ib yam khoom siv polymer uas siv ntau yam hauv kev lag luam khoom noj, tshuaj, tshuaj pleev ib ce, roj av, ntawv, textiles thiab lwm yam lag luam. Nws cov txiaj ntsig tseem ceeb suav nrog kev ua kom tuab, kev ruaj khov, kev ncua, emulsification, kev khaws dej thiab lwm yam haujlwm, yog li nws siv dav hauv ntau qhov chaw. Txawm li cas los xij, txawm tias nws ua tau zoo heev hauv ntau daim ntawv thov, CMC kuj muaj qee qhov tsis zoo thiab kev txwv, uas yuav txwv nws siv rau qee lub sijhawm lossis xav tau kev ntsuas tshwj xeeb los kov yeej cov kev tsis zoo no.
1. Kev yaj tsawg
Qhov solubility ntawm CMC hauv dej yog ib qho tseem ceeb, tab sis nyob rau hauv qee qhov xwm txheej, qhov solubility yuav raug txwv. Piv txwv li, CMC muaj qhov solubility tsis zoo hauv cov chaw muaj ntsev ntau lossis dej tawv heev. Hauv ib puag ncig muaj ntsev ntau, qhov electrostatic repulsion ntawm CMC molecular saw hlau raug txo qis, ua rau muaj kev sib cuam tshuam ntawm intermolecular ntau ntxiv, uas cuam tshuam rau nws qhov solubility. Qhov no yog qhov pom tseeb tshwj xeeb thaum siv rau hauv dej hiav txwv lossis dej uas muaj ntau cov zaub mov. Tsis tas li ntawd, CMC yaj qeeb qeeb hauv dej kub qis thiab yuav siv sijhawm ntev kom yaj tag, uas yuav ua rau txo qis kev ua haujlwm hauv kev lag luam.
2. Kev ruaj khov tsis zoo
Qhov viscosity ntawm CMC yuav raug cuam tshuam los ntawm pH, kub, thiab lub zog ionic thaum siv. Nyob rau hauv acidic lossis alkaline mob, qhov viscosity ntawm CMC yuav txo qis heev, cuam tshuam rau nws cov thickening effect. Qhov no yuav muaj qhov tsis zoo rau qee qhov kev siv uas xav tau viscosity ruaj khov, xws li kev ua zaub mov thiab kev npaj tshuaj. Tsis tas li ntawd, nyob rau hauv qhov kub siab, qhov viscosity ntawm CMC yuav poob sai sai, ua rau muaj kev ua haujlwm tsawg hauv qee qhov kev siv kub siab.
3. Kev puas tsuaj tsis zoo
CMC yog ib hom cellulose uas hloov kho uas muaj qhov qeeb qeeb ntawm kev puas tsuaj, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig ntuj. Yog li ntawd, CMC muaj qhov tsis zoo ntawm kev puas tsuaj ntawm cov khoom thiab tej zaum yuav ua rau muaj kev nyuaj siab rau ib puag ncig. Txawm hais tias CMC zoo dua ntawm kev puas tsuaj ntawm cov khoom dua li qee cov polymers tsim, nws cov txheej txheem puas tsuaj tseem siv sijhawm ntev. Hauv qee qhov kev siv uas cuam tshuam rau ib puag ncig, qhov no yuav dhau los ua qhov tseem ceeb, ua rau tib neeg nrhiav lwm cov khoom siv uas zoo rau ib puag ncig.
4. Cov teeb meem kev ruaj khov ntawm tshuaj lom neeg
CMC tej zaum yuav tsis ruaj khov nyob rau hauv qee qhov chaw tshuaj lom neeg, xws li cov kua qaub muaj zog, cov hauv paus muaj zog lossis cov xwm txheej oxidative. Kev puas tsuaj lossis kev tshuaj lom neeg yuav tshwm sim. Qhov kev tsis ruaj khov no yuav txwv nws txoj kev siv hauv cov chaw tshuaj lom neeg tshwj xeeb. Hauv qhov chaw oxidizing siab heev, CMC yuav raug kev puas tsuaj oxidative, yog li poob nws cov haujlwm. Tsis tas li ntawd, hauv qee cov tshuaj uas muaj cov hlau ions, CMC yuav sib koom tes nrog cov hlau ions, cuam tshuam rau nws cov solubility thiab kev ruaj khov.
5. Tus nqi siab
Txawm hais tias CMC yog ib yam khoom siv uas muaj kev ua tau zoo heev, nws cov nqi tsim khoom kim heev, tshwj xeeb tshaj yog cov khoom CMC uas muaj kev ntshiab siab lossis cov haujlwm tshwj xeeb. Yog li ntawd, hauv qee qhov kev siv nyiaj txiag, kev siv CMC yuav tsis pheej yig. Qhov no yuav ua rau cov tuam txhab xav txog lwm txoj hauv kev pheej yig dua thaum xaiv cov khoom siv tuab lossis cov khoom ruaj khov, txawm hais tias cov kev xaiv no yuav tsis zoo npaum li CMC hauv kev ua tau zoo.
6. Tej zaum yuav muaj cov khoom seem hauv cov txheej txheem tsim khoom
Cov txheej txheem tsim khoom ntawm CMC suav nrog kev hloov pauv tshuaj ntawm cellulose, uas yuav tsim qee cov khoom seem, xws li sodium chloride, sodium carboxylic acid, thiab lwm yam. Cov khoom seem no yuav cuam tshuam rau kev ua haujlwm ntawm CMC lossis ua rau muaj cov khoom tsis huv nyob rau hauv qee qhov xwm txheej. Tsis tas li ntawd, cov tshuaj reagents siv hauv cov txheej txheem tsim khoom yuav muaj kev cuam tshuam tsis zoo rau ib puag ncig yog tias lawv tsis raug tswj hwm kom zoo. Yog li ntawd, txawm hais tias CMC nws tus kheej muaj ntau yam khoom zoo heev, qhov cuam tshuam rau ib puag ncig thiab kev noj qab haus huv ntawm nws cov txheej txheem tsim khoom kuj yog ib qho uas yuav tsum tau xav txog.
7. Kev sib haum xeeb ntawm cov khoom siv tsawg
Txawm hais tias CMC siv dav hauv tshuaj thiab tshuaj pleev ib ce thiab muaj kev sib raug zoo zoo, nws qhov kev sib raug zoo tseem tsis txaus rau qee qhov kev siv. Piv txwv li, qee zaum, CMC yuav ua rau khaus me ntsis lossis ua xua, tshwj xeeb tshaj yog thaum siv ntau dhau lossis ntev. Tsis tas li ntawd, kev zom zaub mov thiab kev tshem tawm CMC hauv lub cev yuav siv sijhawm ntev, uas yuav tsis zoo rau qee lub tshuab xa tshuaj.
8. Cov khoom siv kho tshuab tsis txaus
Ua ib yam khoom uas ua kom tuab thiab ruaj khov, CMC muaj lub zog kho tshuab qis, uas tej zaum yuav yog qhov txwv rau qee cov ntaub ntawv uas xav tau lub zog siab lossis elasticity siab. Piv txwv li, hauv qee cov ntaub lossis cov ntaub sib xyaw uas xav tau lub zog siab, daim ntawv thov CMC yuav raug txwv lossis nws yuav tsum tau siv ua ke nrog lwm cov ntaub ntawv los txhim kho nws cov khoom kho tshuab.
Ua ib yam khoom siv ntau yam uas siv dav dav, carboxymethyl cellulose (CMC) muaj ntau yam zoo, tab sis nws cov qhov tsis zoo thiab cov kev txwv tsis tuaj yeem tsis quav ntsej. Thaum siv CMC, cov yam xws li nws cov solubility, viscosity stability, tshuaj lom neeg stability, kev cuam tshuam rau ib puag ncig thiab tus nqi yuav tsum tau xav txog zoo raws li qhov xwm txheej ntawm daim ntawv thov tshwj xeeb. Tsis tas li ntawd, kev tshawb fawb thiab kev txhim kho yav tom ntej tuaj yeem txhim kho kev ua tau zoo ntawm CMC thiab kov yeej nws cov qhov tsis zoo uas twb muaj lawm, yog li nthuav nws cov peev xwm siv hauv ntau qhov chaw.
Lub sijhawm tshaj tawm: Lub Yim Hli-23-2024