Mekhoa ea ho qhaqha ha hydroxypropyl methylcellulose HPMC ke efe?

1. Mekhoa ea ho qhaqha ha hydroxypropyl methylcellulose HPMC ke efe?

Karabo: Mokhoa oa ho qhibiliha ka metsi a chesang: Kaha HPMC ha e qhibilihe ka metsing a chesang, HPMC e ka qhalanngoa ka ho lekana ka metsing a chesang mohatong oa pele, ebe e qhibiliha kapele ha e pholile. Mekhoa e 'meli e tloaelehileng e hlalosoa ka tsela e latelang:

1), eketsa 1/3 kapa 2/3 ea metsi a hlokahalang ka setshelong, 'me u a futhumatse ho fihlela ho 70°C, u hasanye HPMC ho latela mokhoa oa 1), 'me u lokise slurry ea metsi a chesang; ebe u eketsa metsi a batang a setseng ho slurry ea metsi a chesang, motsoako o ile oa pholile 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 tenya le se bolokang metsi ka har'a seretse sa phofo ea putty.

2) 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. Ho na le mefuta e 'maloa ea hydroxypropyl methylcellulose HPMC. Phapang ke efe ts'ebelisong ea tsona?

Karabo: Hydroxypropyl methylcellulose HPMC e ka aroloa ka mofuta oa hang-hang le mofuta oa ho qhibiliha ho chesang. Lihlahisoa tsa hang-hang li hasana ka potlako metsing a batang 'me li nyamela ka metsing. Nakong ena, mokelikeli ha o na viscosity, hobane HPMC e hasana feela ka metsing, ha ho na ho qhibiliha ha 'nete. Metsotso e ka bang 2, viscosity ea mokelikeli e eketseha butle-butle, e etsa colloid e bonaletsang e nang le viscous. Lihlahisoa tse qhibilihang ka ho chesa, 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. Tšebeliso e ka sehloohong ea hydroxypropyl methylcellulose (HPMC) ke efe?

Karabo: HPMC e sebelisoa haholo thepa ea kaho, liphahlo, li-resin tsa maiketsetso, li-ceramic, 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 tšebeliso. 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.

4. U ka ahlola boleng ba hydroxypropyl methylcellulose (HPMC) joang ka bonolo le ka tlhaho?

Karabo: (1) Matla a khoheli a itseng: Ha matla a khoheli a itseng a le maholo, boima ba 'ona bo ba betere. Karolelano e kholo, ka kakaretso hobane

(2) 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.

(3) Botenya: Botenya ba HPMC ka kakaretso bo na le letlooeng la 80 le letlooeng la 100, 'me letlooeng la 120 le le tlase. Boholo ba HPMC bo hlahisoang Hebei ke letlooeng la 80. Ha botenya bo le botenya, bo ba betere ka kakaretso.

(4) Phetiso ea leseli: kenya hydroxypropyl methylcellulose (HPMC) ka metsing ho etsa colloid e bonaletsang, 'me u hlahlobe phetiso ea eona ea leseli. Ha phetiso ea leseli e phahame, ho molemo, ho bontša hore ho na le lintho tse sa qhibiliheng ho eona. . Ho kenella ha reactor e otlolohileng ka kakaretso ho hotle, 'me ha reactor e otlolohileng ho mpefala, empa ha ho bolele hore boleng ba reactor e otlolohileng bo betere ho feta ba reactor e otlolohileng, 'me ho na le lintlha tse ngata tse khethollang boleng ba sehlahisoa. Boleng ba sehlopha sa hydroxypropyl ho sona bo holimo, 'me bokahare ba sehlopha sa hydroxypropyl bo holimo, 'me ho boloka metsi ho betere.

5. Lipontšo tse ka sehloohong tsa tekheniki tsa hydroxypropyl methylcellulose (HPMC) ke life?

Karabo: Ka lebaka la bongata ba hydroxypropyl le ho teteana, basebelisi ba bangata ba tšoenyehile ka matšoao ana a mabeli. Ba nang le bongata ba hydroxypropyl hangata ba na le ho boloka metsi hantle. Ho teteana ho hoholo, ho boloka metsi, hoo e ka bang (ho fapana le

6. Ke bokae bo nepahetseng ba hydroxypropyl methylcellulose (HPMC)?

Karabo: Phofo ea putty ka kakaretso ke li-yuan tse 100,000, 'me litlhoko tsa seretse li phahame, 'me ho bonolo ho li sebelisa li-yuan tse 150,000. Ho feta moo, mosebetsi oa bohlokoa ka ho fetisisa oa HPMC ke ho boloka metsi, ho lateloa ke ho teteana. Phofong ea putty, ha feela 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 e sa le eo haholo. Ka 'nete) le eona e molemo, 'me viscosity e phahame, 'me ho molemo ho e sebelisa seretseng sa samente.

7. Lisebelisoa tse ka sehloohong tsa hydroxypropyl methylcellulose (HPMC) ke life?

Karabo: 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.

8. Mosebetsi o ka sehloohong oa ho sebelisoa ha HPMC ka har'a phofo ea putty ke ofe, hona na e etsahala ka lik'hemik'hale?

Karabo: 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.

9. HPMC ke ether ya cellulose e seng ya ionic, jwale e seng ya ionic ke eng?

Karabo: Ka mantsoe a tloaelehileng, non-ion ke ntho e ke keng ea ionisa 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 leng le le leng, lea qhibiliha ka metsing 'me lea ionisa ho hlahisa li-ion tsa sodium tse tsamaeang ka bolokolohi (Na+) tse tjhajisitsoeng ka nepo le li-ion tsa chloride (Cl) tse tjhajisitsoeng hampe. Ke hore, ha HPMC e kenngoa ka metsing, e ke ke ea arohana le li-ion tse tjhajisitsoeng, empa e teng ka sebopeho sa limolek'hule.

10. Na ho na le kamano efe kapa efe pakeng tsa lerotholi la phofo ea putty le HPMC?

Karabo: Tahlehelo ea phofo ea putty e amana haholo le boleng ba calcium ea molora, 'me ha e amane hakaalo le HPMC. Khalsiamo e tlase ea calcium ea gray calcium le karolelano e sa nepahalang ea CaO le Ca(OH)2 ka har'a calcium e gray e tla baka tahlehelo ea phofo. Haeba e amana le HPMC, joale haeba HPMC e na le ho boloka metsi ho fokolang, e tla boela e bake tahlehelo ea phofo.

11. Thempereichara ea gel ea hydroxypropyl methylcellulose e amana le eng?

Karabo: Thempereichara ea gel ea HPMC e amana le methoxy ea eona, ha methoxy e le tlase↓, thempereichara ea gel e phahame.

12. Mokhoa oa ho khetha hydroxypropyl methylcellulose (HPMC) e loketseng merero e fapaneng?

Karabo: Tšebeliso ea phofo ea putty: litlhoko li tlase haholo, 'me viscosity ke 100,000, e leng se lekaneng. Ntho ea bohlokoa ke ho boloka metsi hantle. Tšebeliso ea seretse: litlhoko tse phahameng, viscosity e phahameng, 150,000 e molemo. Tšebeliso ea sekhomaretsi: lihlahisoa tsa hang-hang tse nang le viscosity e phahameng lia hlokahala.

13. Phapang ke efe pakeng tsa mofuta oa hang-hang oa metsi a batang le mofuta oa hydroxypropyl methylcellulose o qhibilihang ka ho chesang ts'ebetsong ea tlhahiso?

Karabo: Mofuta oa HPMC oa metsi a batang o phekoloa ka glyoxal holim'a metsi, 'me o hasana kapele metsing a batang, empa ha o qhibilihe e le kannete. O qhibiliha feela ha viscosity e eketseha. Mefuta ea ho qhibiliha ho chesang ha e phekoloe holim'a metsi ka glyoxal. Haeba bongata ba glyoxal bo le boholo, ho hasana ho tla ba kapele, empa viscosity e tla eketseha butle, 'me haeba bongata bo le bonyenyane, se fapaneng le seo e tla ba 'nete.

14. Monko oa hydroxypropyl methylcellulose (HPMC) ke ofe?

Karabo: HPMC e hlahisoang ke mokhoa oa ho qhibiliha e sebelisa toluene le isopropanol e le li-solvent. Haeba ho hlatsoa ho se monate haholo, ho tla ba le monko o setseng.

15. Lebitso le leng la hydroxypropyl methylcellulose ke lefe?

Karabo: Hydroxypropyl Methyl Cellulose, Senyesemane: Hydroxypropyl Methyl Cellulose Kakaretso: HPMC kapa MHPC Lebitso le leng: Hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl methyl ether Hyprolose.

16. Ke eng e lokelang ho elwa hloko ts'ebelisong ea 'nete ea kamano pakeng tsa viscosity le mocheso oa HPMC?

Karabo: Viscosity ea HPMC e lekana ka tsela e fapaneng le mocheso, ke hore, viscosity ea eketseha ha mocheso o fokotseha. Viscosity ea sehlahisoa seo re atisang ho bua ka sona e bolela sephetho sa teko ea tharollo ea sona ea metsi ea 2% mochesong oa likhato tse 20 tsa Celsius.

Litšebelisong tse sebetsang, ho lokela ho hlokomeloa hore libakeng tse nang le phapang e kholo ea mocheso pakeng tsa lehlabula le mariha, ho khothaletsoa ho sebelisa viscosity e tlase haholo mariha, e leng se thusang haholo kahong. Ho seng joalo, ha mocheso o le tlase, viscosity ea cellulose e tla eketseha, 'me maikutlo a letsoho a tla ba boima ha ho hohloa. Viscosity e mahareng: 75000-100000 E sebelisoa haholo bakeng sa putty. Lebaka: ho boloka metsi hantle. Viscosity e phahameng: 150000-200000 E sebelisoa haholo bakeng sa polystyrene particle thermal insulation seretse phofo ea sekhomaretsi le vitrified microbead thermal insulation seretse. Lebaka: viscosity e phahameng, seretse ha se bonolo ho se lahla, ho se fanyeha, le ho ntlafatsa kaho.

17. Tšebeliso ea HPMC ka har'a phofo ea putty, lebaka la lipululana ka har'a phofo ea putty ke lefe?

Karabo: Phofong ea putty, HPMC e bapala karolo e meraro ea ho teteana, ho boloka metsi le kaho. U se ke ua kenya letsoho liketsong life kapa life. Mabaka a lipululana: 1. Kenya metsi a mangata haholo. 2. Lera le ka tlase ha le ome, ho hohla lera le leng ka holimo, 'me ho bonolo ho le foam.