HPMC e sebelisoa haholo ka thepa ea kaho, liphahlo, lirekere tsa maiketsetso, lirafshoa, meriana, lijo, masela, temo, litlolo, koae le liindasteri tse ling. HPMC e ka aroloa ka sehlopha sa indasteri, sehlopha sa lijo le sehlopha sa meriana ho latela kopo.
Tekanyetso ea HPMC ka putty powder ke efe?
Palo ea HPMC e sebelisoang lits'ebetsong tse sebetsang e angoa ke boemo ba leholimo, mocheso, boleng ba khalsiamo ea molora oa lehae, mokhoa oa phofo ea putty le boleng bo hlokoang ke bareki. Ho na le phapang libakeng tse fapaneng, ho bua ka kakaretso, e pakeng tsa 4-5 kg.
Ke viscosity e nepahetseng ea hydroxypropyl methylcellulose efe?
Ka kakaretso, 100,000 putty powder e lekane, 'me tlhoko ea seretse e phahame,' me e hloka 150,000 hore e be bonolo ho e sebelisa. Ho feta moo, mosebetsi oa bohlokoa ka ho fetisisa oa HPMC ke ho boloka metsi, ho lateloa ke ho teteaneng. Ka phofo ea putty, hafeela ho boloka metsi ho le molemo 'me viscosity e tlaase (7-8), hoa khoneha hape. Ha e le hantle, ha viscosity e phahame, ho molemo ho boloka metsi a lekanyelitsoeng. Ha viscosity e feta 100,000, viscosity ha e na phello ea ho boloka metsi. e kgolo.
Matšoao a mantlha a tekheniki a hydroxypropyl methylcellulose ke afe?
Likahare tsa Hydroxypropyl
Likahare tsa methyl
viscosity
Molora
Tahlehelo ka ho omisa
Lisebelisoa tsa mantlha tsa hydroxypropyl methylcellulose ke life?
Lisebelisoa tsa mantlha tsa HPMC: k'hothone e hloekisitsoeng, methyl chloride, propylene oxide, lisebelisoa tse ling tse tala, caustic soda, acid toluene.
Mosebetsi o ka sehloohong oa ts'ebeliso ea hydroxypropyl methylcellulose ka putty powder ke ofe, hona na o etsahala ka lik'hemik'hale?
Har'a phofo ea putty, e bapala likarolo tse tharo tsa ho tiisa, ho boloka metsi le ho haha. Ha e ntse e teteana, selulose e ka ba motenya hore e fanyehe, e boloke seaparo sa motsoako holimo le tlaase, 'me se hane ho thekesela. Ho boloka metsi: etsa hore phofo ea putty e ome butle-butle, 'me u thuse molora oa calcium ho itšoara tlas'a ketso ea metsi. Kaho: Cellulose e na le phello ea lubricating, e ka etsang hore phofo ea putty e be le mohaho o motle. HPMC ha e nke karolo ho liphetoho leha e le life tsa lik'hemik'hale, empa e bapala karolo ea thuso feela.
Hydroxypropyl methylcellulose ke non-ionic cellulose ether, joale seo e seng ionic ke eng?
Ho ea ka mantsoe a layman, lintho tse inert ha li kenye letsoho tšebetsong ea lik'hemik'hale.
CMC (carboxymethyl cellulose) ke cationic cellulose, kahoo e tla fetoha curd ea linaoa ha e kopana le molora oa calcium.
Mocheso oa gel oa hydroxypropyl methylcellulose o amana le eng?
Thempereichara ea gel ea HPMC e amana le litaba tsa eona tsa methoxy, ho theola methoxy content, mocheso oa gel o phahame.
Na ho na le kamano pakeng tsa lerotholi la putty powder le hydroxypropyl methylcellulose?
Ho na le likamano! ! ! Ke ho boloka metsi a futsanehileng a HPMC, e tla baka tahlehelo ea phofo.
Phapang ke efe lipakeng tsa metsi a batang hang-hang le mefuta e chesang e qhibilihang ea hydroxypropyl methylcellulose ts'ebetsong ea tlhahiso?
Mofuta oa hang-hang oa metsi a batang oa HPMC o phekoloa ka holimo ka glyoxal, 'me o hasana ka potlako metsing a batang, empa ha e le hantle ha e qhibilihe. E qhibiliha feela ha viscosity e eketseha. Mefuta e chesang e qhibilihang ha e phekoloe ka glyoxal. Haeba palo ea glyoxal e le khōlō, ho hasana ho tla potlaka, empa viscosity e tla eketseha butle-butle, 'me haeba chelete e le nyenyane, se fapaneng se tla ba' nete.
Monko oa hydroxypropyl methylcellulose ke ofe?
HPMC e hlahisoang ke mokhoa oa ho qhibiliha o sebelisa toluene le isopropanol e le li-solvents. Haeba ho hlatsoa ha ho molemo haholo, ho tla ba le monko o setseng. (Ho hlaphoheloa ha Neutralization ke mokhoa oa bohlokoa oa monko)
mokhoa oa ho khetha hydroxypropyl methylcellulose e nepahetseng?
Putty phofo: e hloka ho bolokoa ha metsi a mangata, boiketlo bo botle ba kaho
Seretse se tloaelehileng sa samente: se hloka ho boloka metsi a mangata, ho hanyetsa mocheso o phahameng, le viscosity hang-hang (
Tšebeliso ea sekhomaretsi sa kaho: lihlahisoa tsa hang-hang tse nang le viscosity e phahameng.
Seretse sa Gypsum: ho boloka metsi a phahameng, viscosity e mahareng le e tlase, ho eketseha ha viscosity hanghang
Lebitso la 16 hydroxypropyl methylcellulose ke lefe?
E bitsoa HPMC kapa MHPC alias hypromellose, cellulose hydroxypropyl methyl ether.
Tšebeliso ea hydroxypropyl methylcellulose ka putty powder, lebaka ke lefe la li-bubble tsa moea ka putty powder?
Ka phofo ea putty, HPMC e bapala likarolo tse tharo tsa ho tiisa, ho boloka metsi le ho haha. Mabaka a li-bubble ke:
(1) Ho eketsoa metsi a mangata haholo.
(2) Ha lera le ka tlaase le sa omelle, qhala lesela le leng ka holimo, ’me ho bonolo ho phophoma.
Phapano ke efe lipakeng tsa hydroxypropyl methylcellulose le MC:
MC ke methyl cellulose, e entsoeng ka cellulose ether ka ho phekola k'hothone e hloekisitsoeng ka alkali, ho sebelisa methane chloride e le etherification agent, le ho sebetsana le letoto la liketso. Ka kakaretso, tekanyo ea ho fetola ke 1.6-2.0, 'me solubility e fapana ho ea ka likhato tse fapaneng tsa ho fetola. Ho fapana, ke ea non-ionic cellulose ether.
(1) Ho boloka metsi a methylcellulose ho ipapisitse le palo ea eona ea tlatsetso, viscosity, botle ba likaroloana le sekhahla sa ho qhibiliha. Ka kakaretso, haeba palo ea tlatsetso e le kholo, botle bo nyane, 'me viscosity e kholo, sekhahla sa ho boloka metsi se phahame. Har'a bona, palo ea tlatsetso e na le tšusumetso e kholo ho sekhahla sa ho boloka metsi ho batho. Viscosity ha e lekane le sekhahla sa ho boloka metsi. Sekhahla sa ho qhibiliha haholo-holo se itšetlehile ka bokaholimo ba likaroloana tsa cellulose. Tekanyo ea ho fetola le likaroloana tsa fineness. Har'a li-ether tsa cellulose tse ka holimo, methyl cellulose le hydroxypropyl methyl cellulose li na le litekanyetso tse phahameng tsa ho boloka metsi.
(2) Methylcellulose e qhibiliha ka metsing a batang, 'me ho tla ba thata ho qhibiliha ka metsing a chesang. Tharollo ea eona ea metsi e tsitsitse haholo sebakeng sa ph = 3-12. E na le tumellano e ntle le starch, joalo-joalo le li-surfactants tse ngata. Ha mocheso oa mocheso Ha mocheso oa gelation o fihla, ho tla etsahala gelation.
(3) Liphetoho tsa mocheso li tla ama ka botebo tekanyo ea ho boloka metsi ea methyl cellulose. Ka kakaretso, ha mocheso o phahame, sekhahla sa ho boloka metsi se mpefala le ho feta. Haeba mocheso oa seretse o feta likhato tse 40, ho boloka metsi a methyl cellulose ho tla fokotseha haholo, e leng ho tla ama ka ho teba ho hahoa ha seretse.
(4) Methyl cellulose e na le phello e kholo mohahong le ho khomarela seretse. Ho khomarela mona ho bolela matla a sekhomaretsi a utluoang pakeng tsa sesebelisoa sa mosebelisi le karoloana ea lebota, ke hore, ho hanyetsa ha seretse. Sekhomaretsi se phahame, khanyetso ea ho kuta ea seretse e kholo, 'me matla a hlokoang ke basebetsi ha a ntse a sebelisoa le ona a maholo,' me ho hahoa ha seretse ho futsanehile.
Hydroxypropyl methylcellulose e arotsoe ka mefuta e mengata, 'me liphapang tsa tšebeliso ea tsona ke life?
HPMC e ka aroloa ka mofuta oa hang-hang (suffix ea lebitso la brand "S") le mofuta oa hot-melt. Lihlahisoa tsa mofuta oa hang-hang li qhalana ka potlako metsing a batang ebe li nyamela ka metsing. Ka nako ena, mokelikeli ha o na viscosity hobane HPMC e qhalakanngoa feela metsing ntle le ho qhibiliha ha sebele. Hoo e ka bang (ho hlohlelletsa) metsotso e 2, viscosity ea mokelikeli e ntse e eketseha butle-butle, e etsa "viscous colloid" e hlakileng e hlakileng. Lihlahisoa tse chesang, ha li kopana le metsi a batang, li ka qhalana ka potlako metsing a chesang 'me tsa nyamela metsing a chesang. Ha mocheso o theohela mocheso o itseng (ho ea ka mocheso oa gel oa sehlahisoa), viscosity e tla hlaha butle-butle ho fihlela e theha colloid e hlakileng ea viscous.
Mekhoa ea ho qhibiliha ea hydroxypropyl methylcellulose ke efe?
1) Mefuta eohle e ka eketsoa ho thepa ka mokhoa o omileng oa ho kopanya;
2) Ha e hloka ho eketsoa ka kotloloho ho tharollo e tloaelehileng ea mocheso oa metsi, ho molemo ho sebelisa mofuta oa ho hasana ha metsi a batang, 'me hangata ho nka metsotso e 10-90 ho teteana ka mor'a ho eketsa (hlohlelletsa le ho hlohlelletsa)
3) Mohlala o tloaelehileng o tsosoa le ho qhalakanngoa ka metsi a chesang pele, ebe o ka qhibiliha ka mor'a ho eketsa metsi a batang ho hlohlelletsa le ho pholile;
4) Haeba ho kopanya le ho phuthela ho etsahala nakong ea ho qhibiliha, ke hobane ho tsosoa ha hoa lekana kapa mohlala o tloaelehileng o kenngoa ka ho toba metsing a batang. Ka nako ena, e lokela ho tsosoa ka potlako. the
5) Haeba li-bubble li hlahisoa nakong ea ho qhibiliha, li ka tloheloa hore li eme lihora tse 2-12 (nako e tobileng e khethoa ke ho tsitsa ha tharollo) kapa e tlosoe ka vacuuming, pressurizing, joalo-joalo, kapa tekanyo e nepahetseng ea moemeli oa ho senya e ka ekeletsoa. the
Joang ho ahlola boleng ba hydroxypropyl methylcellulose habonolo le ka mokhoa o hlakileng?
1) Bosoeu, le hoja bosoeu bo ke ke ba tseba hore na HPMC e bonolo ho e sebelisa, 'me haeba li-whitening agents li kenngoa ts'ebetsong ea tlhahiso, li tla ama boleng ba tsona, empa boholo ba lihlahisoa tse ntle li na le bosoeu bo botle.
2) Bokhabane: Bokhabane ba HPMC ka kakaretso bo na le 80 mesh le 100 mesh, 120 mesh e nyane, ha bokhabane bo le betere ho feta.
3) Phetiso ea leseli: Ka mor'a hore HPMC e behoe ka metsing ho etsa colloid e bonaletsang, sheba phetiso ea eona e bobebe. Ha leseli le fetisa ka bongata, ho molemo, ho bonts'a hore ho na le li-insoluble tse nyane ho eona, 'me phetiso ea li-reactor tse otlolohileng hangata e ntle. , Reactor e otlolohileng e mpe, empa ha e bolele hore boleng ba sekontiri se otlolohileng bo betere ho feta ba sekontiri se rapameng, 'me ho na le lintlha tse ngata tse ka khethollang boleng ba sehlahisoa.
4) Matla a khoheli a khethehileng: Ha matla a khoheli a itseng a le kholoanyane, boima bo ba betere. Ha matla a khoheli a itseng a phahame, ho ba le boleng bo phahameng ba hydroxypropyl sehlahisoa. Ha maemo a hydroxypropyl a phahame, ho boloka metsi ho betere.
Nako ea poso: Nov-24-2022