Mekhoa ea ho qhibiliha ea hydroxypropyl methylcellulose HPMC ke efe?

1. Mekhoa ea ho qhibiliha ea hydroxypropyl methylcellulose HPMC ke efe?

Karabo: 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), 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 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 ho e 'ngoe le e' ngoe e nyenyane. hukung 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.

2) 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 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. Ho na le mefuta e 'maloa ea hydroxypropyl methylcellulose HPMC. Liphapang tsa tšebeliso ea tsona ke life?

Karabo: Hydroxypropyl methylcellulose HPMC e ka aroloa ka mofuta oa hang-hang le mofuta o chesang oa ho qhibiliha. Lihlahisoa tsa mofuta oa hang-hang li hasana ka potlako metsing a batang ebe li nyamela ka metsing. Ka nako ena, mokelikeli ha o na viscosity, hobane HPMC e qhalakanngoa feela ka metsing, ha ho na ho qhibiliha ha sebele. Hoo e ka bang metsotso e 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. Tšebeliso e ka sehloohong ea hydroxypropyl methylcellulose (HPMC) ke efe?

Karabo: HPMC e sebelisoa haholo linthong tsa kaho, liphahlo, li-resin tsa maiketsetso, li-ceramics, 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 ts'ebeliso. 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.

4. Joang ho ahlola boleng ba hydroxypropyl methylcellulose (HPMC) habonolo le ka mokhoa o hlakileng?

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

(2) Bosoeu: Le hoja bosoeu bo ke ke ba tseba hore na HPMC e bonolo ho e sebelisa, 'me haeba li-whitening agents li kenngoa nakong ea tlhahiso, li tla ama boleng ba eona. Leha ho le joalo, boholo ba lihlahisoa tse ntle li na le bosoeu bo botle.

(3) Bokhabane: Bokhabane ba HPMC ka kakaretso 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 le botle haholo, bo betere ka kakaretso.

(4) Ho fetisa leseli: kenya hydroxypropyl methylcellulose (HPMC) ka metsing ho etsa colloid e bonaletsang, 'me u hlahlobe phetiso ea eona ea leseli. Ha khanya ea khanya e phahame, e molemo, e bontšang hore ho na le li-insoluble tse fokolang ho eona. . Ho kenella ha reactor e otlolohileng ka kakaretso ho lokile, 'me ea reactor e tšekaletseng e mpe, empa ha ho bolele hore boleng ba reactor e emeng e betere ho feta ea reactor e otlolohileng, mme ho na le lintlha tse ngata tse ka khethollang boleng ba sehlahisoa. . Litaba tsa sehlopha sa hydroxypropyl ho eona li phahame, 'me litaba tsa sehlopha sa hydroxypropyl li phahame,' me ho boloka metsi ho molemo.

5. Ke matšoao afe a mantlha a tekheniki a hydroxypropyl methylcellulose (HPMC)?

Karabo: 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. Li-viscosity tse phahameng, ho boloka metsi, ho batla (ho fapana le

6. Viscosity e nepahetseng ea hydroxypropyl methylcellulose (HPMC) ke efe?

Karabo: Putty powder ka kakaretso ke li-yuan tse 100,000, 'me litlhoko tsa seretse li phahame,' me ho bonolo ho 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 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. Ka ho feletseng) e boetse e molemo, 'me viscosity e phahame,' me ho molemo ho e sebelisa ka seretse sa samente.

7. Lisebelisoa tsa mantlha tsa hydroxypropyl methylcellulose (HPMC) ke life?

Karabo: 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.

8. Mosebetsi o ka sehloohong oa ho sebelisoa ha HPMC ka putty powder ke ofe, hona na o etsahala ka lik'hemik'hale?

Karabo: 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 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. e ka metsing le moeeng Tlas'a ketso ea CO2, calcium carbonate e hlahisoa, ha HPMC e boloka metsi feela, e thusang ho itšoara hantle ha molora oa molora, 'me ha e kopanele karabelo leha e le efe ka boeona.

9. HPMC ke ether e seng ea ionic cellulose, joale ke eng eo e seng ea ionic?

Karabo: Ka mantsoe a layman, non-ion ke ntho e ke keng ea e-ba metsi. 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.

10. Na ho na le kamano pakeng tsa lerotholi la putty powder le HPMC?

Karabo: 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.

11. Mocheso oa gel oa hydroxypropyl methylcellulose o amana le eng?

Karabo: Thempereichara ea gel ea HPMC e amana le litaba tsa eona tsa methoxy, ho theosa le methoxy content↓, ho phahamisa mocheso oa gel.

12. Tsela ea ho khetha hydroxypropyl methylcellulose (HPMC) e loketseng merero e fapaneng joang?

Karabo: Tšebeliso ea phofo ea putty: litlhoko li batla li le tlaase, 'me viscosity ke 100,000, e 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 hot-soluble oa hydroxypropyl methylcellulose ts'ebetsong ea tlhahiso?

Karabo: Mofuta oa hang-hang oa metsi a batang oa HPMC o phekoloa ka holimo ka glyoxal, 'me o qhalana ka potlako metsing a batang, empa ha e le hantle ha e qhibilihe. E qhibiliha feela ha viscosity e eketseha. Mefuta e chesang e qhibilihang ha e phekoloe 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.

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

Karabo: HPMC e hlahisoang ke mokhoa oa solvent e sebelisa toluene le isopropanol e le li-solvents. Haeba ho hlatsoa ha ho molemo 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 Khutsufatso: HPMC kapa MHPC Alias: Hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl methyl ether Hyprolose.

16. Ke eng e lokelang ho lebisoa tlhokomelo ho ts'ebeliso ea sebele ea kamano pakeng tsa viscosity le mocheso oa HPMC?

Karabo: The viscosity ea HPMC e fapane ka tsela e fapaneng le mocheso, ke hore, viscosity e eketseha ha mocheso o fokotseha. Viscosity ea sehlahisoa seo hangata re buang ka sona se bolela sephetho sa tlhahlobo ea tharollo ea metsi a 2% mochesong oa likhato tse 20 tsa Celsius.

Litšebelisong tse sebetsang, hoa lokela ho hlokomeloa hore libakeng tse nang le phapang e kholo ea mocheso pakeng tsa lehlabula le mariha, ho kgothaletswa ho sebelisa viscosity e batlang e le tlaase nakong ea mariha, e leng se loketseng ho haha. Ho seng joalo, ha mocheso o le tlase, viscosity ea cellulose e tla eketseha, 'me letsoho le tla ba boima ha le senya. Viscosity e bohareng: 75000-100000 E sebelisoa haholo bakeng sa putty. Lebaka: ho boloka metsi hantle. Viscosity e phahameng: 150000-200000 Haholo-holo e sebelisetsoang polystyrene particle thermal insulation mortar glue powder le vitrified microbead thermal insulation mortar. Lebaka: viscosity e phahameng, seretse ha se bonolo ho theola, ho fanyeha, le ho ntlafatsa kaho.

17. Tšebeliso ea HPMC ka phofo ea putty, ke lebaka lefe la li-bubble ka phofo ea putty?

Karabo: Ka phofo ea putty, HPMC e bapala likarolo tse tharo tsa ho tiisa, ho boloka metsi le ho haha. Se ke oa kenya letsoho liketsong leha e le life. Mabaka a lipululana: 1. Kenya metsi a mangata haholo. 2. Lera le ka tlaase ha le omelle, feela le phunye lera le leng ka holimo, 'me le bonolo ho foam.