1. Tšebeliso e ka sehloohong eahydroxypropyl methylcellulose (HPMC)?
Hydroxypropyl methylcellulose e sebelisoa haholo ka thepa ea kaho, litlolo, li-resin tsa maiketsetso, lirafshoa, meriana, lijo, masela, temo, litlolo, koae le liindasteri tse ling. Hydroxypropyl methylcellulose e ka aroloa ka sehlopha sa kaho, kereiti ea lijo le kereiti ea meriana ho latela ts'ebeliso ea eona. 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 le sekhomaretsi.
2. Ho na le mefuta e mengata ea hydroxypropyl methylcellulose (HPMC), 'me ke phapang efe ea tšebeliso ea bona?
HPMC e ka aroloa ka mofuta oa hang-hang le mofuta oa ho qhibiliha o chesang. Lihlahisoa tsa mofuta oa hang-hang li qhalana ka potlako ha li kopana le metsi 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. Kamora metsotso e ka bang 2, viscosity ea mokelikeli e ntse e eketseha butle-butle, e etsa "viscous colloid" e hlakileng. Lihlahisoa tse chesang, ha li kopane le metsi a batang, li ka qhalana ka potlako metsing a chesang 'me tsa nyamela metsing a chesang. Ha mocheso o theohela ho mocheso o itseng, viscosity e tla hlaha butle-butle ho fihlela e etsa "viscous colloid" e hlakileng. Mofuta oa hot-melt o ka sebelisoa feela ka phofo ea putty le seretse. Ka sekhomaretsi sa metsi le pente, ho tla ba le ts'ebetso ea lihlopha 'me e ke ke ea sebelisoa. Mofuta oa hang-hang o na le mefuta e mengata e fapaneng ea lits'ebetso. E ka sebelisoa ka phofo ea putty le seretse, hammoho le sekhomaretsi sa metsi le pente, ntle le li-contraindications.
3. Mekhoa ea ho qhibiliha ea hydroxypropyl methylcellulose (HPMC) ke efe?
Mokhoa oa ho qhibiliha ha metsi a chesang: Kaha HPMC ha e qhibilihe metsing a chesang, HPMC e ka qhalakanngoa ka mokhoa o ts'oanang 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, ho ea ka mokhoa oa 1), qhala HPMC ho lokisetsa slurry ea metsi a chesang; ebe o 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 ka har'a seretse 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 ka kakaretso bo na le 80 mesh le 100 mesh, 120 mesh e nyane, 'me boholo ba HPMC e hlahisoang Hebei ke 80 mesh. Ha botle bo botle, ka kakaretso, bo betere.
(3) Phetiso: Kenya hydroxypropyl methylcellulose (HPMC) ka metsing ho etsa colloid e bonaletsang, 'me u hlahlobe phetiso ea eona. Ha phetisetso e phahame, e betere, e bonts'a hore ho na le li-insoluble tse nyane 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. Ke bokae ba hydroxypropyl methylcellulose (HPMC) ka phofo ea putty?
Palo ea HPMC e sebelisoang lits'ebetsong tse sebetsang e fapana ho itšetlehile ka boemo ba leholimo, mocheso, boleng ba khalsiamo ea molora oa sebakeng seo, foromo ea putty powder le "boleng bo hlokoang ke bareki". Ka kakaretso, pakeng tsa 4 kg le 5 kg. Ka mohlala: boholo ba phofo ea putty Beijing ke 5 kg; boholo ba phofo ea putty Guizhou ke 5 kg lehlabula le 4,5 kg mariha; palo ea phofo ea putty Yunnan e batla e le nyane, ka kakaretso ke 3 kg ho isa ho 4 kg, joalo-joalo.
6. Viscosity e nepahetseng ea hydroxypropyl methylcellulose (HPMC) ke efe?
Putty powder ka kakaretso e lekana li-yuan tse 100,000, 'me litlhoko tsa seretse li holimo,' me 150,000 yuan e 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, basebelisi 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. Lintho tse ka sehloohong tse tala tsahydroxypropyl methylcellulose (HPMC)?
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 tšebeliso ea HPMC ka putty powder ke ofe, hona na o 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. HPMC ha e nke karolo ho liphetoho leha e le life tsa lik'hemik'hale, empa e bapala karolo ea thuso feela. 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, Ca O le palo e nyenyane ea CaCO3, CaO+H2O=Ca (OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Ash calcium e ka 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 le ho thusa metsi.
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, nengHPMCe kenngoa ka metsing, e ke ke ea ikarola ho li-ion tse qosoang, empa li teng ka mokhoa oa limolek'hule.
Nako ea poso: Apr-28-2024