Cellulose ether ke setlatsetso se tloaelehileng thepa ea kaho, se sebelisetsoang ho ntlafatsa ts'ebetso ea kaho le thepa ea mechini ea seretse. Botenya ke e 'ngoe ea litšobotsi tsa bohlokoa tsa cellulose ether, e bolelang kabo ea boholo ba likaroloana tsa eona.
Litšobotsi le lits'ebetso tsa ether ea selulose
Cellulose ether e kenyeletsa haholo-holo hydroxypropyl methylcellulose (HPMC), hydroxyethyl cellulose (HEC), jj. Mesebetsi ea bona e meholo ea ho haha seretse e kenyelletsa:
Ho boloka metsi: ka ho fokotsa mouoane oa metsi, ho lelefatsa nako ea ho monya samente, le ho eketsa matla a seretse.
Ho tiea: Eketsa ho teteana ha seretse le ho ntlafatsa tshebetso ya kaho.
Ntlafatsa ho hanyetsa mapetso: Thepa ea ho boloka metsi ea cellulose ether e thusa ho laola ho fokotseha ha samente, ka hona ho fokotsa ho hlaha ha mapetso ka har'a seretse.
Botebo ba ether ea cellulose bo ama ho qhalana ha eona, ho qhibiliha ha eona le katleho ea eona ka har'a seretse, ka hona ho ama ts'ebetso eohle ea seretse.
Tšusumetso ea botenya ba ether ea cellulose matleng a seretse e ka hlahlojoa ho tsoa lintlheng tse latelang:
1. Sekhahla sa ho qhalana le ho qhalana ha tsona
Sekhahla sa ho qhibiliha ha ether ea cellulose ka metsing se amana haufi-ufi le botenya ba eona. Likaroloana tsa ether ea cellulose tse nang le botenya bo phahameng li qhibiliha habonolo ka metsing, kahoo li etsa karohano e tšoanang kapele. Kabo ena e tšoanang e ka netefatsa ho bolokoa ha metsi ka mokhoa o tsitsitseng le ho teteana tsamaisong eohle ea seretse, ea khothaletsa tsoelo-pele e ts'oanang ea karabelo ea metsi a samente, le ho ntlafatsa matla a pele a seretse.
2. Bokhoni ba ho boloka metsi
Botebo ba ether ea cellulose bo ama ts'ebetso ea eona ea ho boloka metsi. Likaroloana tsa ether ea cellulose tse nang le botebo bo phahameng li fana ka sebaka se seholo se itseng sa bokaholimo, ka hona li theha meaho e mengata ea li-microporous e bolokang metsi ka har'a seretse. Li-micropores tsena li ka boloka metsi ka katleho, tsa lelefatsa nako ea karabelo ea ho nosetsa samente, tsa khothaletsa ho thehoa ha lihlahisoa tsa ho nosetsa, 'me ka hona tsa ntlafatsa matla a seretse.
3. Ho kopanya sebopeho
Ka lebaka la ho qhalana ha tsona hantle, likaroloana tsa ether tsa cellulose tse nang le botenya bo phahameng li ka etsa lera le lekanang la ho kopanya pakeng tsa seretse le aggregate, le ho ntlafatsa ho kopanya ha seretse. Phello ena e thusa seretse ho boloka plasticity e ntle mohatong oa pele, ho fokotsa ho hlaha ha mapetso a ho fokotseha, 'me ka hona ho ntlafatsa matla ka kakaretso.
4. Khothaletso ea ho nosetsa samente
Nakong ea ts'ebetso ea ho nosetsa samente, ho thehoa ha lihlahisoa tsa ho nosetsa ho hloka metsi a itseng. Cellulose ether e nang le botenya bo phahameng e ka theha maemo a mangata a ho nosetsa ka har'a seretse, ea qoba bothata ba mongobo o sa lekaneng kapa o feteletseng oa sebaka seo, ea netefatsa tsoelo-pele e felletseng ea karabelo ea ho nosetsa, 'me ka hona ea ntlafatsa matla a seretse.
Thuto ea liteko le tlhahlobo ea liphetho
E le ho netefatsa phello ea botenya ba ether ea cellulose matleng a seretse, lithuto tse ling tsa liteko li ile tsa lokisa botenya ba ether ea cellulose 'me tsa leka litšobotsi tsa eona tsa mechini tsa seretse ka litekanyo tse fapaneng.
Moralo oa liteko
Teko hangata e sebedisa disampole tsa ether ya cellulose tsa di-fineness tse fapaneng mme e di eketsa ka hara seretse sa samente ka ho latellana. Ka ho laola di-variable tse ding (tse kang karolelano ya metsi le samente, karolelano ya kakaretso, nako ya ho kopanya, jj.), ke feela fineness ya ether ya cellulose e fetolwang. Letoto la diteko tsa matla, ho kenyeletswa matla a ho hatella le matla a ho thiba, ebe di etswa.
Liphetho tsa liteko hangata li bontša:
Disampole tsa ether tsa cellulose tse nang le botenya bo phahameng di ka ntlafatsa haholo matla a ho hatella le matla a ho kokobela a seretse mohatong wa pele (jwalo ka matsatsi a 3 le matsatsi a 7).
Ka katoloso ea nako ea ho fola (joalo ka matsatsi a 28), ether ea cellulose e nang le botenya bo phahameng e ka tsoela pele ho fana ka ho boloka metsi hantle le ho kopana hantle, e bonts'a kholo e tsitsitseng ea matla.
Mohlala, tekong, matla a ho hatella a di-ether tsa cellulose tse nang le botenya ba letlooeng la 80, letlooeng la 100, le letlooeng la 120 ka matsatsi a 28 e ne e le 25 MPa, 28 MPa, le 30 MPa, ka ho latellana. Sena se bontsha hore ha botenya ba ether ya cellulose bo le hodimo, matla a ho hatella a seretse a eketseha.
Tšebeliso e sebetsang ea ntlafatso ea botle ba ether ea cellulose
1. Fetola ho latela tikoloho ea kaho
Ha ho hahuoa tikolohong e omileng kapa tlas'a maemo a mocheso o phahameng, ether ea cellulose e nang le bokhabane bo phahameng e ka khethoa ho ntlafatsa ho boloka metsi ha seretse le ho fokotsa tahlehelo ea matla e bakoang ke mouoane oa metsi.
2. Sebelisa hammoho le lintho tse ling tse eketsang
Cellulose ether e nang le botenya bo phahameng e ka sebelisoa hammoho le lintho tse ling tse eketsang (tse kang lintho tse fokotsang metsi le lintho tse kenyang moea) ho ntlafatsa ts'ebetso ea seretse. Mohlala, ts'ebeliso ea lintho tse fokotsang metsi e ka fokotsa karolelano ea metsi le samente le ho eketsa bongata ba seretse, ha cellulose ether e fana ka ts'ireletso ea metsi le litlamorao tse matlafatsang. Motsoako oa tse peli o ka ntlafatsa matla a seretse haholo.
3. Ntlafatso ea ts'ebetso ea kaho
Nakong ea ts'ebetso ea kaho, ho hlokahala ho netefatsa hore ether ea cellulose e qhibilihile ka botlalo le ho hasana. Sena se ka finyelloa ka ho eketsa nako ea ho kopanya kapa ho sebelisa lisebelisoa tse loketseng tsa ho kopanya ho netefatsa hore molemo oa botenya ba ether ea cellulose o sebelisoa ka botlalo.
Botle ba ether ea cellulose bo na le phello e kholo matleng a seretse. Ether ea cellulose e nang le botenya bo phahameng e ka bapala karolo ea ho boloka metsi hamolemo, ho tenya le ho ntlafatsa khokahano ea sebopeho, le ho ntlafatsa matla a pele le thepa ea mechini ea nako e telele ea seretse. Litšebelisong tse sebetsang, botenya ba ether ea cellulose bo lokela ho khethoa ka nepo le ho sebelisoa ho latela maemo le litlhoko tse itseng tsa kaho ho ntlafatsa ts'ebetso ea seretse le ho ntlafatsa boleng ba projeke.
Nako ea poso: Phuptjane-24-2024