1. Tšebeliso e ka sehloohong eahydroxypropyl methylcellulose (HPMC)?
Hydroxypropyl methylcellulose e sebelisoa haholo thepa ea kaho, liphahlo, li-resin tsa maiketsetso, li-ceramic, meriana, lijo, masela, temo, litlolo, koae le liindasteri tse ling. Hydroxypropyl methylcellulose e ka aroloa ka sehlopha sa kaho, sehlopha sa lijo le sehlopha sa meriana ho latela ts'ebeliso ea eona. Hona joale, boholo ba lihlahisoa tsa lapeng ke sehlopha sa kaho. Sehlopha sa kaho, phofo ea putty e sebelisoa ka bongata, hoo e ka bang 90% e sebelisoa bakeng sa phofo ea putty, 'me tse setseng li sebelisoa bakeng sa seretse sa samente le sekhomaretsi.
2. Ho na le mefuta e 'maloa ea hydroxypropyl methylcellulose (HPMC), 'me phapang ea tšebeliso ea tsona ke efe?
HPMC e ka aroloa ka mofuta oa hang-hang le mofuta oa ho qhibiliha ho chesang. Lihlahisoa tsa mofuta oa hang-hang li hasana kapele ha li kopana le metsi a batang 'me li nyamela ka metsing. Nakong ena, mokelikeli ha o na viscosity hobane HPMC e hasana feela ka metsing ntle le ho qhibiliha ha 'nete. Kamora metsotso e ka bang 2, viscosity ea mokelikeli e eketseha butle-butle, e etsa colloid e bonaletsang e nang le viscous. Lihlahisoa tsa ho qhibiliha ho chesang, ha li kopana le metsi a batang, li ka hasana kapele ka metsing a chesang 'me tsa nyamela ka metsing a chesang. Ha mocheso o theohela mochesong o itseng, viscosity e tla hlaha butle-butle ho fihlela e etsa colloid e bonaletsang e nang le viscous. Mofuta oa ho qhibiliha ho chesang o ka sebelisoa feela ka phofo ea putty le seretse. Ka sekhomaretsi le pente ea metsi, ho tla ba le ketsahalo ea lihlopha 'me e ke ke ea sebelisoa. Mofuta oa hang-hang o na le mefuta e mengata ea ts'ebeliso. E ka sebelisoa ka phofo ea putty le seretse, hammoho le sekhomaretsi le pente ea metsi, ntle le lithibelo leha e le life.
3. Mekhoa ea ho qhaqha ha hydroxypropyl methylcellulose (HPMC) ke efe?
Mokhoa oa ho qhala ka metsi a chesang: Kaha HPMC ha e qhale ka metsing a chesang, HPMC e ka qhalanngoa ka ho lekana ka metsing a chesang mohatong oa pele, ebe e qhala kapele ha e pholile. Mekhoa e 'meli e tloaelehileng e hlalosoa ka tsela e latelang:
1) Kenya metsi a chesang a hlokahalang ka setshelong 'me u a futhumatse ho fihlela ho 70°C. Hydroxypropyl methylcellulose e ile ea eketsoa butle-butle tlas'a ho hlohlelletsa butle, qalong HPMC e ile ea phaphamala holim'a metsi, 'me butle-butle ea etsa lerōle, le ileng la pholisoa tlas'a ho hlohlelletsa.
2) Kenya 1/3 kapa 2/3 ea metsi a hlokahalang ka setshelong, 'me u a futhumatse ho fihlela ho 70 ° C, ho latela mokhoa oa 1), hasanya HPMC ho lokisa slurry ea metsi a chesang; ebe u eketsa metsi a batang a setseng ho slurry ea metsi a chesang, motsoako o ile oa pholisoa ka mor'a ho hlohlelletsa.
Mokhoa oa ho kopanya phofo: kopanya phofo ea HPMC le lintho tse ling tse ngata tse nang le phofo, kopanya hantle ka mochini o kopanyang, ebe u eketsa metsi ho qhibiliha, ebe HPMC e ka qhibiliha ka nako ena ntle le ho kopana, hobane ho na le HPMC e nyane feela sekhutlong se seng le se seng se senyenyane Phofo, e tla qhibiliha hang ha e kopana le metsi. ——Bahlahisi ba phofo ea putty le seretse ba sebelisa mokhoa ona. [Hydroxypropyl methylcellulose (HPMC) e sebelisoa e le sesebelisoa se teteaneng le se bolokang metsi ka har'a seretse sa phofo ea putty.]
4. U ka ahlola boleng ba hydroxypropyl methylcellulose (HPMC) joang ka bonolo le ka tlhaho?
(1) Bosweu: Le hoja bosweu bo ke ke ba tseba hore na HPMC e bonolo ho e sebedisa, mme haeba ho eketswa di-agent tsa ho sweufatsa nakong ya tshebetso ya tlhahiso, e tla ama boleng ba yona. Leha ho le jwalo, boholo ba dihlahiswa tse ntle di na le bosweu bo botle.
(2) Botenya: Botenya ba HPMC ka kakaretso bo na le letlooeng la 80 le letlooeng la 100, letlooeng la 120 le lenyenyane, 'me boholo ba HPMC e hlahisoang Hebei ke letlooeng la 80. Ha letlooeng le letenya le letenya, ka kakaretso, ho molemo.
(3) Phetisetso: Kenya hydroxypropyl methylcellulose (HPMC) ka metsing ho etsa colloid e bonaletsang, 'me u hlahlobe phetisetso ea eona. Ha phetisetso e phahame, e molemo, e leng se bontšang hore ha ho na tse sa qhibiliheng ho eona. Ho kenella ha li-reactor tse otlolohileng ka kakaretso ho hotle, 'me ha li-reactor tse otlolohileng ho mpefala, empa ha ho bolele hore boleng ba li-reactor tse otlolohileng bo betere ho feta ba li-reactor tse otlolohileng, 'me boleng ba sehlahisoa bo khethoa ke lintlha tse ngata.
(4) Matla a khoheli a itseng: Ha matla a khoheli a itseng a le maholo, boima ba ’ona bo ba betere. Matla a khoheli a maholo, ka kakaretso hobane bokahare ba sehlopha sa hydroxypropyl ho sona bo phahame, ’me bokahare ba sehlopha sa hydroxypropyl bo phahame, ho boloka metsi ho ba betere.
5. Ke bokae ba hydroxypropyl methylcellulose (HPMC) ka har'a phofo ea putty?
Bongata ba HPMC bo sebediswang ditshebedisong tse sebetsang bo fapana ho latela boemo ba lehodimo, mocheso, boleng ba khalsiamo ya molora wa lehae, foromo ya phofo ya putty le "boleng bo hlokoang ke bareki". Ka kakaretso, pakeng tsa 4 kg le 5 kg. Mohlala: boholo ba phofo ya putty Beijing ke 5 kg; boholo ba phofo ya putty Guizhou ke 5 kg hlabula le 4.5 kg mariha; bongata ba phofo ya putty Yunnan bo nyane haholo, ka kakaretso ho tloha ho 3 kg ho isa ho 4 kg, jj.
6. Ke bokae bo nepahetseng ba hydroxypropyl methylcellulose (HPMC)?
Phofo ea putty ka kakaretso e lekana le li-yuan tse 100,000, 'me litlhoko tsa seretse li phahame,' 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, o lateloa ke ho teteana. Phofong ea putty, hafeela ho boloka metsi ho le molemo 'me viscosity e le tlase (70,000-80,000), hoa khoneha hape. Ehlile, ha viscosity e phahame, ho boloka metsi ho molemo. Ha viscosity e feta 100,000, viscosity e tla ama ho boloka metsi. Ha ho sa na letho le leholo.
7. Lipontšo tse ka sehloohong tsa tekheniki tsa hydroxypropyl methylcellulose (HPMC) ke life?
Bongata ba basebelisi ba amehile ka dikahare tsa hydroxypropyl le viscosity, ka kakaretso ba na le ho boloka metsi ho betere. E nang le viscosity e phahameng e na le ho boloka metsi ho betere, ka tekanyo e itseng (eseng ka ho felletseng), mme e nang le viscosity e phahameng e sebediswa hamolemo ho seretse sa samente.
8. Lisebelisoa tse tala tsa mantlha tsahydroxypropyl methylcellulose (HPMC)?
Lisebelisoa tse ka sehloohong tse tala tsa hydroxypropyl methylcellulose (HPMC): k'hothone e hloekisitsoeng, methyl chloride, propylene oxide, le lisebelisoa tse ling tse tala, caustic soda, asiti, toluene, isopropanol, jj.
9. Mosebetsi o ka sehloohong oa ho sebelisoa ha HPMC phofong ea putty ke ofe, hona na e etsahala ka lik'hemik'hale?
Phofong ea putty, HPMC e bapala likarolo tse tharo tsa ho teteana, ho boloka metsi le kaho. Ho teteana: Cellulose e ka teteana ho emisa le ho boloka tharollo e lekana holimo le tlase, le ho hanela ho thekesela. Ho boloka metsi: etsa hore phofo ea putty e ome butle, 'me e thuse calcium ea molora ho arabela tlas'a ts'ebetso ea metsi. Kaho: Cellulose e na le phello ea ho tlotsa, e ka etsang hore phofo ea putty e be le kaho e ntle. HPMC ha e kenelle liketsong life kapa life tsa lik'hemik'hale, empa e bapala karolo e thusang feela. Ho eketsa metsi phofong ea putty le ho e beha leboteng ke karabelo ea lik'hemik'hale, hobane lintho tse ncha lia thehoa. Haeba u tlosa phofo ea putty leboteng, u e sila hore e be phofo, 'me u e sebelise hape, e ke ke ea sebetsa hobane lintho tse ncha (calcium carbonate) li se li entsoe.) le tsona. Likarolo tse ka sehloohong tsa phofo ea khalsiamo ea molora ke: motsoako oa Ca (OH)2, CaO le CaCO3 e nyane, CaO+H2O=Ca (OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Khalsiamo ea molora e metsing le moeeng Tlas'a ketso ea CO2, calcium carbonate ea hlahisoa, ha HPMC e boloka metsi feela, e thusa karabelo e betere ea calcium ea molora, 'me ha e kenelle karabelong efe kapa efe ka boeona.
10. HPMC ke ether ya cellulose e seng ya ionic, jwale e seng ya ionic ke eng?
Ka mantsoe a tloaelehileng, li-non-ion ke lintho tse sa ioning ka metsing. Ionization e bolela mokhoa oo electrolyte e aroloang ho ba li-ion tse tjhajisitsoeng tse ka tsamaeang ka bolokolohi ka har'a solvent e itseng (joalo ka metsi, joala). Mohlala, sodium chloride (NaCl), letsoai leo re le jang letsatsi le letsatsi, lea qhibiliha ka metsing 'me lea ionis ho hlahisa li-ion tsa sodium tse tsamaeang ka bolokolohi (Na+) tse tjhajisitsoeng hantle le li-ion tsa chloride (Cl) tse tjhajisitsoeng hampe. Ke ho re, haHPMCHa e kentsoe ka metsing, e ke ke ea arohana hore e be li-ion tse nang le charge, empa e teng ka sebopeho sa limolek'hule.
Nako ea poso: Mmesa-28-2024