Low viscosity HPMC :HPMC 400 e sebelisoa haholo-holo bakeng sa seretse sa ho itšebetsa, empa ka kakaretso se rekiloe kantle ho naha.
Lebaka: The viscosity e tlase, le hoja ho boloka metsi ho fokola, empa boemo bo botle, 'me seretse se seholo se phahame.
Viscosity e mahareng le e tlase:hydroxypropyl methylcelluloseHPMC 20000-40000 e sebelisoa haholo-holo bakeng sa sekhomaretsi sa lithaele, sesebelisoa sa caulking, seretse se thibelang ho phunyeha, seretse se kopanyang mocheso, joalo-joalo.
Lebaka: ho sebetsa hantle, ho eketsa metsi a fokolang, ho kopana ha seretse se phahameng.
1. Sepheo se seholo sa hydroxypropyl methylcellulose (HPMC) ke sefe?
——A: HPMC e sebelisoa haholo linthong tsa moaho, lijalo, lirekere tsa maiketsetso, lirafshoa, meriana, lijo, masela, temo, litlolo, koae le liindasteri tse ling. HPMC e ka aroloa ka: kereiti ea kaho, kereiti ea lijo le kereiti ea meriana ho latela sepheo. Hajoale, boholo ba lihlahisoa tsa lapeng ke tsa boemo ba kaho. Sehlopheng sa kaho, palo ea phofo ea putty e kholo haholo, 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), hona phapang ke efe litšebelisong tsa bona?
—— Karabo: HPMC e ka aroloa ka mofuta oa hang-hang 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 'me ha e na ho qhibiliha ha sebele. Kamora metsotso e ka bang 2, viscosity ea mokelikeli e ile ea eketseha butle-butle, ea etsa colloid e hlakileng ea viscous. Lihlahisoa tse futhumatsang mocheso, ha li kopana le metsi a batang, li ka qhalakanngoa ka potlako metsing a chesang, 'me tsa nyamela metsing a chesang. Ha mocheso o theohela mochesong o itseng (sehlahisoa sa k'hamphani ea rona ke likhato tse 65 tsa Celsius), viscosity e hlaha 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 etsahala ntho e makatsang '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 putty phofo le seretse, hammoho le ka sekhomaretsi sa metsi le pente, ntle le li-contraindications.
3. Mekhoa ea ho qhibiliha ea hydroxypropyl methylcellulose (HPMC) ke efe?
-- Karabo: 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 isa ho 70°C. Hydroxypropyl methylcellulose e ile ea eketsoa butle-butle ka ho sisinyeha butle-butle, qalong HPMC e ne e phaphametse holim'a metsi, ebe butle-butle e theha slurry, e neng e pholile ka ho sisinyeha.
2), eketsa 1/3 kapa 2/3 ea palo e hlokahalang ea metsi ka har'a setshelo, 'me ue futhumale ho 70 ° C, ho ea ka mokhoa oa 1), qhala HPMC, lokisetsa slurry ea metsi a chesang; ebe o eketsa palo e setseng ea metsi a batang ho metsi a chesang Ka slurry, motsoako o ne o pholile ka mor'a ho hlohlelletsa.
Mokhoa oa ho kopanya phofo: Kopanya phofo ea HPMC le bongata bo bongata ba lintho tse ling 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 sebakeng se seng le se seng. sekhutlo se senyane. Phofo e tla qhibiliha hang-hang ha e kopana le metsi. ——Mokhoa ona o sebelisoa ke bahlahisi ba putty powder le seretse. [Hydroxypropyl methylcellulose (HPMC) e sebelisoa e le ntho e thibelang metsi le e bolokang metsi seretseng sa putty powder. ]
4. Joang ho ahlola boleng ba hydroxypropyl methylcellulose (HPMC) habonolo le ka mokhoa o hlakileng?
—— Karabo: (1) Bosoeu: Le hoja bosoeu bo ke ke ba etsa qeto ea hore na HPMC e bonolo ho e sebelisa, ’me haeba ho eketsoa khanya ka mokhoa oa 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 ke 80 mesh le 100 mesh, le 120 mesh e tlase. Boholo ba HPMC e hlahisoang Hebei ke 80 mesh. Ha botle bo le botle, 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 lintho tse fokolang tse sa keneng ho eona. Ho kenella ha reactor e otlolohileng ka kakaretso ho lokile, 'me reactor e tšekaletseng e mpe le ho feta, empa ho ke ke ha boleloa hore boleng ba reactor e emeng e betere ho feta ea reactor e otlolohileng, mme ho na le lintlha tse ngata tse khethollang boleng ba sehlahisoa. (4) Matla a khoheli a itseng: ha khoheli e itseng e le kholoanyane, boima bo ba betere. Matla a khoheli a itseng a maholo, ka kakaretso hobane litaba tsa hydroxypropyl ho eona li phahame, 'me litaba tsa hydroxypropyl li phahame, ho boloka metsi ho molemo.
5. Palo ea hydroxypropyl methylcellulose (HPMC) ka putty powder?
—— Karabo: Palo ea HPMC e sebelisoang lits’ebetsong tse sebetsang e fapana ho ea ka boemo ba leholimo, mocheso, boleng ba molora oa sebakeng seo, mokhoa oa putty powder le “boleng bo hlokoang ke bareki”. Ka kakaretso, e 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;
6. Viscosity e nepahetseng ea hydroxypropyl methylcellulose (HPMC) ke efe?
—— Karabo: Putty powder ka kakaretso ke li-yuan tse 100,000, ’me seretse se batla se le boima haholo, ’me ho bonolo ho se sebelisa ho li-yuan tse 150,000. Ho feta moo, karolo ea bohlokoa ka ho fetisisa ea 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), hoa khoneha hape. Ha e le hantle, viscosity e phahame, 'me ho boloka metsi ho lekanyelitsoeng ho molemo. Ha viscosity e feta 100,000, phello ea viscosity ho boloka metsi ha e ngata haholo.
7. Ke matšoao afe a mantlha a tekheniki a hydroxypropyl methylcellulose (HPMC)?
—— Karabo: Likahare tsa Hydroxypropyl le viscosity, basebelisi ba bangata ba tsotella matšoao ana a mabeli. Ha maemo a hydroxypropyl a phahame, ho boloka metsi ho betere. Viscosity e phahameng, ho boloka metsi, e batlang e le (ho e-na le ho feletseng) e molemo, le viscosity e phahameng, tšebeliso e ntle ea seretse sa samente.
8. Lisebelisoa tsa mantlha tsa hydroxypropyl methylcellulose (HPMC) ke life?
—— A: Thepa e ka sehloohong ea hydroxypropyl methylcellulose (HPMC): k’hothone e hloekisitsoeng, methyl chloride, propylene oxide, lisebelisoa tse ling tse tala li kenyelletsa flake alkali, acid, toluene, isopropanol, joalo-joalo.
9. Karolo e ka sehloohong ea HPMC ke efe ha ho sebelisoa phofo ea putty, hona na ho na le k'hemistri?
—— Karabo: HPMC e na le mesebetsi e meraro ea ho tiisa, ho boloka metsi le ho haha ka putty powder. Thickening: Cellulose e ka teteaneng hore e fanyehe, boloka motsoako oa tharollo o tsitsitse, 'me o hane ho theoha. Ho boloka metsi: Etsa hore phofo ea putty e ome butle, 'me u thuse karabelo ea molora oa calcium tlas'a ketso ea metsi. Kaho: Cellulose e na le phello ea lubricating, e ka etsang hore putty powder e be le ts'ebetso e ntle ea ho sebetsa. HPMC ha e kenye letsoho tšebetsong efe kapa efe ea lik'hemik'hale mme e bapala karolo ea tlatsetso feela. Ho eketsa metsi ho phofo ea putty le ho e beha leboteng ke karabelo ea lik'hemik'hale. Ka lebaka la ho thehoa ha lintho tse ncha, nka 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. ) holimo. Likarolo tse kholo tsa phofo ea calcium ea molora 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 ka metsing le moeeng Tlas'a ketso ea CO2, calcium carbonate e hlahisoa, ha HPMC e boloka metsi feela 'me e thusa karabelo e ntle ea molora oa calcium,' me ha e kopanele karabelo leha e le efe ka boeona.
10. HPMC ke non-ionic cellulose ether, joale ke eng eo e seng ea ionic?
- Karabo: Ho ea ka mantsoe a layman, li-non-ion ke lintho tse sa keneng metsing. Ionization e bolela mokhoa oo electrolyte e arohanang ka eona ho li-ion tse tsamaisoang mahala ka har'a motsoako o itseng (joaloka metsi, joala). Ka mohlala, sodium chloride (NaCl), letsoai le jeoang letsatsi le leng le le leng, le qhibiliha ka metsing le ionizes ho hlahisa li-ion sodium (Na +) tse tsamaeang ka bolokolohi le li-ion tsa chloride (Cl) tse qosoang hampe. Ke hore, ha HPMC e kenngoa ka metsing, ha e ikarole ho li-ion tse qosoang, empa e teng ka mokhoa oa limolek'hule.
Nako ea poso: Oct-17-2022