1. Tšebeliso e ka sehloohong eahydroxypropyl methylcellulose (HPMC)?
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 kaho, sehlopha sa lijo le sehlopha sa meriana ho latela sepheo. Hajoale, boholo ba lihlahisoa tsa lapeng ke tsa boemo ba kaho. Sebakeng sa kaho, phofo ea putty e sebelisoa ka bongata, hoo e ka bang 90% e sebelisetsoa putty powder, 'me e setseng e sebelisetsoa seretse sa samente.
2. Monko oa hydroxypropyl methylcellulose (HPMC) 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.
3. Mekhoa ea ho qhibiliha ea hydroxypropyl methylcellulose (HPMC) ke efe?
Mokhoa oa ho qhibiliha ha metsi a chesang: Kaha HPMC ha e qhale metsing a chesang, HPMC e ka qhalakanngoa ka ho lekana metsing a chesang qalong, ebe e qhibiliha ka potlako ha e pholile. Mekhoa e 'meli e tloaelehileng e hlalosoa ka tsela e latelang:
1) Kenya palo e hlokahalang ea metsi a chesang ka har'a sets'oants'o 'me ue chese ho fihlela ho 70°C. Hydroxypropyl methylcellulose e ile ea kenngoa butle-butle tlas'a ho sisinyeha butle-butle, qalong HPMC e ne e phaphametse holim'a metsi, 'me butle-butle e theha slurry, e neng e pholile tlas'a ho sisinyeha.
2), eketsa 1/3 kapa 2/3 ea palo e hlokahalang ea metsi ka har'a setshelo, 'me ue chese ho 70 ° C, qhala HPMC ho latela mokhoa oa 1),' me u lokise slurry ea metsi a chesang; joale eketsa palo e setseng ea metsi a batang ho metsi a chesang a slurry, motsoako o ne o pholile ka mor'a ho hlohlelletsa.
Mokhoa oa ho kopanya phofo: kopanya phofo ea HPMC le lintho tse ling tse ngata tse phofo, kopanya ka botlalo le motsoako, ebe u eketsa metsi ho qhibiliha, ebe HPMC e ka qhibiliha ka nako ena ntle le ho kopana, hobane ho na le HPMC e nyenyane feela k'honeng e 'ngoe le e' ngoe Powder, e tla qhibiliha hang-hang ha e kopana le metsi. ——Baetsi ba phofo le seretse ba sebelisa mokhoa ona. [Hydroxypropyl methylcellulose (HPMC) e sebelisoa e le ntho e thibelang metsi le ho boloka metsi seretseng sa putty powder. ]
4. Joang ho ahlola boleng ba hydroxypropyl methylcellulose (HPMC) 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 eketsoa nakong ea tlhahiso, e tla ama boleng ba eona. Leha ho le joalo, boholo ba lihlahisoa tse ntle li na le bosoeu bo botle.
(2) Bokhabane: Bokhabane ba HPMC hangata bo na le 80 mesh le 100 mesh, le 120 mesh e tlase. Boholo ba HPMC e hlahisoang Hebei ke 80 mesh. Ha botle bo botle, ka kakaretso, bo betere.
(3) Ho fetisoa ha leseli: behahydroxypropyl methylcellulose (HPMC)ka metsing ho etsa colloid e bonaletsang, 'me u shebe phetiso ea eona e bobebe. Ha khanya e fetisa ka bongata, e molemo, e bontšang hore ho na le li-insoluble tse fokolang ho eona. . The permeability ea li-reactor tse otlolohileng hangata li ntle, 'me tsa li-reactor tse tšekaletseng li mpefala, empa ha ho bolele hore boleng ba li-reactor tse otlolohileng bo betere ho feta ba li-reactor tse tšekaletseng,' me boleng ba sehlahisoa bo khethoa ke lintlha tse ngata.
(4) Matla a khoheli a khethehileng: Ha matla a khoheli a itseng a le maholo, boima bo ba betere. Ntho e ikhethang e kholo, ka kakaretso hobane litaba tsa sehlopha sa hydroxypropyl ho eona li phahame, 'me litaba tsa sehlopha sa hydroxypropyl li phahame, ho boloka metsi ho molemo.
5. Phapang ke efe pakeng tsa mofuta oa hang-hang oa metsi a batang le mofuta oa hot-soluble oa hydroxypropyl methylcellulose ts'ebetsong ea tlhahiso?
Mofuta oa ho hasana ka potlako oa HPMC o phekoloa ka holimo ka glyoxal, 'me e hasana ka potlako metsing a batang, empa ha e hlile ha e qhibilihe. E qhibiliha feela ha viscosity e eketseha. Mofuta oa hang-hang ha o na phekolo ea holimo 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.
6. Viscosity e nepahetseng ea hydroxypropyl methylcellulose (HPMC) ke efe?
Putty powder ka kakaretso ke li-yuan tse 100,000, 'me litlhoko tsa seretse li holimo,' me li-yuan tse 150,000 lia hlokahala bakeng sa tšebeliso e bonolo. 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 (70,000-80,000), hape e ka khoneha. Ha e le hantle, ha viscosity e phahame, ho molemo ho boloka metsi a lekanyelitsoeng. Ha viscosity e feta 100,000, viscosity e tla ama ho boloka metsi. Ha ho sa le joalo.
7. Ke matšoao afe a mantlha a tekheniki a hydroxypropyl methylcellulose (HPMC)?
Likahare tsa Hydroxypropyl le viscosity, batho ba bangata ba amehile ka matšoao ana a mabeli. Ba nang le hydroxypropyl e ngata hangata ba na le ho boloka metsi ho betere. E nang le viscosity e phahameng e na le ho boloka metsi hantle, ha e le hantle (eseng ka ho feletseng), 'me e nang le viscosity e phahameng e sebelisoa hamolemo ho seretse sa samente.
8. Lisebelisoa tsa mantlha tsa hydroxypropyl methylcellulose (HPMC) ke life?
Lisebelisoa tse ka sehloohong tsa hydroxypropyl methylcellulose (HPMC): k'hothone e hloekisitsoeng, methyl chloride, propylene oxide, le lisebelisoa tse ling tse tala, caustic soda, acid, toluene, isopropanol, joalo-joalo.
9. Mosebetsi o ka sehloohong oa ts'ebeliso eaHPMCka putty powder, 'me e etsahala ka lik'hemik'hale?
Ka phofo ea putty, HPMC e bapala likarolo tse tharo tsa ho tiisa, ho boloka metsi le ho haha.
Thickening: Cellulose e ka teteaneng ho emisa le ho boloka seaparo sa tharollo holimo le tlase, le ho hanela ho theoha.
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.
Ho eketsa metsi ho phofo ea putty le ho e beha leboteng ke karabelo ea lik'hemik'hale, hobane lintho tse ncha li thehoa. Haeba u tlosa phofo ea putty leboteng ho tloha leboteng, u e sila ka phofo, 'me ue sebelise hape, e ke ke ea sebetsa hobane lintho tse ncha (calcium carbonate) li entsoe. ) hape.
Likarolo tse ka sehloohong tsa phofo ea molora oa calcium ke: motsoako oa Ca (OH) 2, CaO le palo e nyenyane ea CaCO3, CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Ash calcium e metsing le moeeng Tlas'a ts'ebetso ea CO2, calcium carbonate e hlahisoa, ha HPMC e boloka karabelo leha e le efe ea metsi, ha e thuse feela ho itšoara hantle, ho thusa metsi le ho itšoara hantle.
10. HPMC ke ether e seng ea ionic cellulose, joale ke eng eo e seng ea ionic?
Ka mantsoe a layman, li-non-ion ke lintho tse sa ionise ka metsing. Ionization e bolela mokhoa oo electrolyte e arohanang ka eona ho li-ion tse qosoang tse ka tsamaeang ka bolokolohi ka har'a motsoako o itseng (joaloka metsi, joala). Ka mohlala, sodium chloride (NaCl), letsoai leo re le jang letsatsi le leng le le leng, le qhibiliha ka metsing 'me le ionize ho hlahisa li-ion tsa sodium (Na+) tse tsamaisoang ka bolokolohi le li-ion tsa chloride (Cl) tse qosoang hampe. Ke ho re, ha HPMC e kenngoa ka metsing, e ke ke ea ikarola ho li-ion tse qosoang, empa e teng ka mokhoa oa limolek'hule.
11. 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.
12. Na ho na le kamano pakeng tsa lerotholi la putty powder le HPMC?
Tahlehelo ea phofo ea putty powder e amana haholo-holo le boleng ba molora oa calcium, 'me ha e amane hakaalo le HPMC. Khalsiamo e tlase ea khalsiamo e bohlooho le karo-karolelano e sa lokelang ea CaO le Ca(OH)2 ka k'halsiamo e bohlooho e tla baka tahlehelo ea phofo. Haeba e na le ho hong ho amanang le HPMC, joale haeba HPMC e na le ho boloka metsi a futsanehileng, e tla boela e baka tahlehelo ea phofo.
13. Phapang ke efe pakeng tsa mofuta oa hang-hang oa metsi a batang le mofuta oa hot-soluble oa hydroxypropyl methylcellulose ts'ebetsong ea tlhahiso?
Mofuta oa ho hasana ka potlako oaHPMCe alafshoa ka holimo ka glyoxal, 'me e qhalana kapele metsing a batang, empa ha e le hantle ha e qhibilihe. E qhibiliha feela ha viscosity e eketseha. Mofuta oa hang-hang ha o na phekolo ea holimo 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.
Nako ea poso: Apr-25-2024