I-ether ye-cellulose inokuphucula kakhulu ukusebenza kodaka olumanzi, kwaye iyona nto yongezwayo echaphazela ukwakhiwa kodaka. Ukukhethwa okufanelekileyo kwee-cellulose ethers zeentlobo ezahlukeneyo, i-viscosities eyahlukeneyo, ubukhulu beentlobo ezahlukeneyo, iidigri ezihlukeneyo ze-viscosity kunye neemali ezongezelelweyo ziya kuba nefuthe elihle ekuphuculeni ukusebenza kwe-powder mortar.
Kukwakho nobudlelwane obuhle bomgca phakathi kokungaguquguquki kwentlama yesamente kunye nedosi ye-cellulose ether. I-ether ye-cellulose inokunyusa kakhulu i-viscosity yodaka. Ubukhulu bedosi, kokukhona isiphumo esicacileyo. I-high-viscosity cellulose ether isisombululo samanzi sine-thixotropy ephezulu, ekwayimpawu enkulu ye-cellulose ether.
Isiphumo sokuqina sixhomekeke kwiqondo le-polymerization ye-cellulose ether, i-concentration yesisombululo, izinga lokucheba, ubushushu kunye nezinye iimeko. Ipropati ye-gelling yesisombululo iyingqayizivele kwi-alkyl cellulose kunye ne-derivatives yayo eguqulwayo. Iimpawu ze-gelation zihambelana neqondo lokutshintshwa, ukugxininiswa kwesisombululo kunye nezongezo. Kwizinto ze-hydroxyalkyl eziguqulweyo, iipropathi zejeli nazo zihambelana neqondo lokuguqulwa kwe-hydroxyalkyl. Isisombululo se-10% -15% sinokulungiswa kwi-MC kunye ne-HPMC, isisombululo se-5% -10% sinokulungiswa kwi-medium-viscosity MC kunye ne-HPMC, kunye ne-2% -3% isisombululo sinokulungiswa kuphela kwi-high-viscosity MC kunye ne-HPMC. Ngokuqhelekileyo i-viscosity classification ye-cellulose ether iphinda ihlelwe nge-1% -2% isisombululo.
I-ether ye-cellulose enobunzima obuphezulu be-molekyuli inamandla aphezulu okuqina. Iipolymers ezinobunzima beemolekyuli ezahlukeneyo zinee-viscosity ezahlukeneyo kwisisombululo esifanayo soxinaniso. Iqondo eliphezulu. I-viscosity ekujoliswe kuyo inokufezekiswa kuphela ngokongeza inani elikhulu le-ether ye-cellulose ephantsi ye-molecular weight. I-viscosity yayo inokuxhomekeka okuncinci kwireyithi yokucheba, kwaye i-viscosity ephezulu ifikelela kwi-viscosity ekujoliswe kuyo, kwaye inani elifunekayo lokongeza lincinci, kwaye i-viscosity ixhomekeke ekusebenzeni kakuhle. Ngoko ke, ukufezekisa ukuhambelana okuthile, inani elithile le-cellulose ether (ukugxilwa kwesisombululo) kunye ne-viscosity yesisombululo kufuneka kuqinisekiswe. Iqondo lokushisa le-gel yesisombululo liyancipha ngokuhambelana nokunyuka koxinzelelo lwesisombululo, kunye neegels kwiqondo lokushisa emva kokufikelela kwinqanaba elithile. Uxinzelelo lwe-gelling lwe-HPMC luphezulu ngokwentelekiso kwiqondo lobushushu begumbi.
Ixesha lokuposa: Mar-08-2023