Cellulose etherDej ceev
Dej ceev ceev ntawm collh hais txog kev muaj peev xwm ntawm cult ca tuav thiab xauv dej. Qhov siab dua ntawm cov viscosity ntawm cellulose ether, qhov zoo dua cov dej khaws cia. Vim tias cellulose qauv muaj hydroxyl thiab ether cov pa atoms thiab dej dawb rau cov pa dej, thiaj li ua lub luag haujlwm ntawm dej ceev.
Solubility ntawmCellulose ether
1. Tus coarser cellulose ether yog yooj yim rau tawg hauv dej yam tsis muaj agglomerating, tab sis kev sib cais yog qeeb heev. Cellulose ether hauv qab no 60 mesh yog yaj hauv dej li 60 feeb.
2. Cov khoom zoo ntawm cellulose ether hauv dej yog yooj yim rau disperse thiab tsis agglomerate, thiab kev sib cais yog qhov sib cais. Cellulose ether tshaj 80 mesh yaj nyob rau hauv dej li 3 feeb.
3. Eltres cellulose cellulose ether disperses sai sai hauv dej, yaj tawm sai sai thiab ua kev viscosity sai sai. Cellulose ether saum toj tshaj 120 mesh yog yaj hauv dej li 10-30 vib nas this.
Tus finer lub cellulose etherles, qhov zoo dua cov khoom siv ntawm cellulose ether thiab muaj chaw sib cuag nto tam sim ntawd yaj thiab tsim gel prenomenon. Cov kua nplaum qhwv cov khoom kom tiv thaiv cov lwg dej los ntawm kev nkag mus rau qhov nkag mus. Qee zaum, txawm tias do lub sijhawm ntev, kev daws teeb meem tsis tuaj yeem ua kom tiav thiab yaj, tsim cov av nkos flocculent daws lossis agglomerate. Cov nplais zoo me me thiab yaj tam sim no nyob rau ntawm kev sib cuag nrog dej los ua cov viscosity uncosposity.
PH tus nqi ntawm cellulose ether (ncua kev sib xyaws lossis lub zog thaum ntxov)
Tus lej pH tus nqi ntawm cellulose ether cov lag luam nyob hauv tsev thiab txawv teb chaws yog ib txwm tswj tau thaum txog 7, uas yog acidic. Vim tias tseem muaj ntau lub cev qhuav dej lub ntsej muag nyob hauv cov qauv moleculed ntawm lub nplhaib moleculed yog cov pab pawg tseem ceeb uas ua rau muaj huab cua qeeb. Lub nplhaib dej cawv ua kom muaj peev xwm ua kom muaj cov cala ion ntawm Cegas Ion concium molecide frystals thiab calcium ntsev frystals, yog li ncua cov txheej txheem ntawm coaszing. Yog tias tus nqi PH yuav ua tiav alkaline, tshuaj khib yuav tshwm sim lub zog thaum ntxov. Tam sim no feem ntau ntawm cov nqi los kho tus peepium carbonate, sodium carbonate thiab calcium carbonate yog ib qho kev sib xyaw ua ke nrawm, ua kom pom kev tsim tawm sai sai, ua kom pom kev zoo sai li sai tau. Yog li ntawd, tus nqi py yuav tsum tau hloov kho raws li cov neeg siv sib txawv hauv cov txheej txheem ntau lawm.
Cellulose ether Gas Taws Induction
Cov cua nkag ntawm cellulose ether feem ntau yog vim yog cellulose ether tseem muaj nyob rau hauv cov pa roj av-ua rau muaj kev sib tshuam, ua ntej yog kev sib cais thiab ntub dej. Cellulose ether muaj alkyl pab pawg, muaj zog txo cov dej, cov dej sib xyaw ua ke yog qhov yooj yim los ua kom muaj ntau cov pa me me.
Gelation ntawm cellulose ether
Cellulose Ether Desolved nyob rau hauv kev tshuaj khib nyiab vim yog kev sib xyaw ua ke nrog cov kab cig thiab ua kom zoo nkauj ntawm cov kab cig, txhim kho lub luag haujlwm ntawm kev hloov pauv thiab rov qab ua haujlwm. Txawm li cas los xij, thaum lub composite matrix yog nias, cov polymer tsis tuaj yeem ua cov nyiaj pab tsis muaj zog, yog li lub zog thiab nyem txo qis.
Zaj duab xis tsim cov cellulose ether
Ib daim nyias nyias zaj duab xis yog tsim ntawm cellulose ete thiab Maas hais tom qab dej. Zaj duab xis tau muab cov nyhuv sib khi thiab txhim kho cov nplaim hluav taws xob qhuav ntawm cug. Vim tias lub cellulose ether muaj cov dej ua kom zoo, tswj cov tshuaj cug, txhim kho txoj kev sib xyaw ua ke ntawm cov nplaum ntawm cov xis nyob thiab kev ua kom huv, txo cov micrtermity deformation.
Lub Sijhawm Post: Jun-14-2022