Tharollo ea HPMC

1, tšebeliso ea mantlha ea hydroxypropyl methyl cellulose (HPMC) ke efe?

Karabo : HPMC e sebelisoa haholo ho thepa ea mohaho, liphahlo, li-resin 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 bongaka ho latela ts'ebeliso.Hajoale, tse entsoeng lapeng ke boholo ba boemo ba kaho, boemong ba kaho, palo ea phofo ea putty e kholo haholo, hoo e ka bang 90% e sebelisetsoa ho etsa putty powder, e setseng e sebelisetsoa ho etsa seretse sa samente le sekhomaretsi.

2, hydroxypropyl methyl cellulose (HPMC) e arotsoe ka mefuta e mengata, phapang ke efe lipakeng tsa ts'ebeliso ea eona?

Karabo :HPMC e ka aroloa ka ho qhibiliha hang-hang le mocheso, lihlahisoa tsa hang-hang, metsing a batang ka potlako a qhalakantsoeng, a nyamela ka metsing, ka nako ena mokelikeli ha o na viscosity, hobane HPMC e qhalakanngoa 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 qhibilihang ka mocheso, ka metsi a batang a agglomeration, li ka ba metsing a chesang, li qhalakanngoa ka potlako, li nyamela metsing a chesang, ho fihlela mocheso o theohela mocheso o itseng, viscosity e hlaha butle, ho fihlela ho thehoa ha colloid e hlakileng ea viscous.Mocheso qhibilihang ka har'a mofuta o ka sebelisoa feela ka phofo ea putty le seretse, ka sekhomaretsi sa mokelikeli le ho roala, ho ka hlaha ketsahalo ea agglomeration, e ke keng ea sebelisoa.Moetso oa hang-hang oa ho qhibiliha, sebaka sa kopo se pharalletse, se jeoa ke phofo ea ngoana le seretse, 'me ka sekhomaretsi sa metsi le ho roala, tsohle li ka sebelisoa, ha li na taboo.

3, mekhoa ea ho qhala ea hydroxypropyl methyl cellulose (HPMC) e na le tseo?

- karabo: mokhoa oa ho qhibiliha ha metsi a chesang: hobane HPMC ha e qhibilihe metsing a chesang, kahoo HPMC ea pele e ka qhalakanngoa ka ho lekana metsing a chesang, ebe e qhibiliha ka potlako ha ho pholile, mekhoa e 'meli e tloaelehileng e hlalosoa ka tsela e latelang:

1) Tlatsa setshelo ka metsi a mangata a chesang kamoo u hlokang 'me u se chese ho isa ho 70℃.Hydroxypropyl methyl cellulose e kenngoa butle-butle tlas'a ho sisinyeha butle, 'me HPMC e phaphamala holim'a metsi, ebe butle-butle e etsa slurry, e pholileng tlas'a ho sisinyeha.

2) Kenya 1/3 kapa 2/3 ea palo e hlokahalang ea metsi ka har'a sets'oants'o ebe u e futhumatsa ho 70 ℃.Hasanya HPMC ho latela mokhoa oa 1) ho lokisa slurry ea metsi a chesang;Ebe u eketsa metsi a batang a setseng ho metsi a chesang a slurry 'me u pholile motsoako ka mor'a ho susumetsa.

Mokhoa oa ho kopanya phofo: phofo ea HPMC le palo e kholo ea lisebelisoa tse ling tsa phofo, tse kopantsoeng ka ho feletseng le blender, ebe li eketsa metsi ho qhibiliha, ka nako ena HPMC e ka qhibiliha, 'me ha e kopane, hobane sekhutlo se seng le se seng se senyenyane, ke phofo e nyenyane feela ea HPMC, metsi. e tla qhalana hanghang.- Baetsi ba phofo ea putty le seretse ba sebelisa mokhoa ona.[Hydroxypropyl methyl cellulose (HPMC) e sebelisoang e le ntho e teteaneng le e bolokang metsi seretseng sa putty powder.

4, mokhoa oa ho tseba boleng ba hydroxypropyl methyl cellulose (HPMC) e bonolo ebile e utloahala?

Karabo : (1) bosoeu: le hoja bosoeu bo ke ke ba tseba hore na HPMC e ntle, 'me haeba e eketsoa ka mokhoa oa ho hlahisa whitener, e tla ama boleng ba eona.Leha ho le joalo, lihlahisoa tse ngata tse ntle li na le bosoeu bo botle.(2) fineness : HPMC fineness ka kakaretso ke 80 mesh le 100 mesh, 120 morero ka tlase, Hebei HPMC hangata 80 mesh, fineness e ntle, ka kakaretso, ho molemo.(3) phetisetso: hydroxypropyl methyl cellulose (HPMC) ka metsing, sebopeho sa colloid e bonaletsang, bona phetisetso ea eona, phetisetso e kholo ho feta, lintho tse insoluble ka hare ho tlase.Phetiso ea reactor e otlolohileng e ntle ka kakaretso, 'me ea reactor e tšekaletseng e mpe, empa ha e bolele hore boleng ba tlhahiso ea reactor e emeng e betere ho feta ea reactor e tšekaletseng.Ho na le lintlha tse ngata tse khethollang boleng ba sehlahisoa.(4) Tekanyo: ha tekanyo e kholoanyane, boima bo bongata bo betere.Ho feta tse kholo, hobane ka hare ho hydroxyl propyl base content hangata, hydroxyl propyl base content e phahame, sireletsa metsi hore a batle betere.

5, viscosity ea hydroxypropyl methyl cellulose (HPMC) e nepahetse haholoanyane?

- karabo: ho jeoa ke bolutu ka phofo ea bana ho lokile hangata 100 sekete, ba bang ba bolelele ba tlhokahalo ka seretse, batla bokhoni ba 150 ba ho sebelisa.Ho feta moo, HPMC ke karolo ea bohlokoahali ea ho boloka metsi, e lateloang ke ho teteana.Ka phofo ea putty, hafeela ho boloka metsi ho le molemo, viscosity e tlaase (7-80 000), hape hoa khoneha, ha e le hantle, viscosity e kholoanyane, ho boloka metsi a lekanyelitsoeng ho molemo, ha viscosity e feta. 100 sekete, viscosity ea ho boloka metsi ha e ngata.

6, hydroxypropyl methyl cellulose (HPMC) matšoao a mantlha a tekheniki ke afe?.

Karabo: Likahare tsa Hydroxypropyl le viscosity, basebelisi ba bangata ba tsotella matšoao ana a mabeli.Likahare tsa Hydroxypropyl li phahame, ho boloka metsi ho molemo ka kakaretso.Viscosity, ho boloka metsi, leloko (empa eseng ka ho feletseng) ho boetse ho molemo, le viscosity, seretse sa samente se molemo ho sebelisa tse ling.

7, hydroxypropyl methyl cellulose (HPMC) lisebelisoa tsa mantlha ke life?

Karabo: hydroxypropyl methyl cellulose (HPMC) lisebelisoa tse ka sehloohong tse tala: k'hothone e hloekisitsoeng, chloromethane, propylene oxide, lisebelisoa tse ling tse tala, alkali ea letlapa, acid, toluene, joala ea isopropyl joalo-joalo.

8, HPMC ha ho sebelisoa phofo ea putty, karolo e ka sehloohong, ebang ke ketsahalo ea k'hemistri?

Karabo: HPMC ka putty powder, thickening, metsi le kaho ea likarolo tse tharo.Thickening: selulose e ka teteaneng ho fanyeha, e le hore tharollo e lule e le junifomo holimo le tlase karolo ea ho fanyeha ho thibela phallo.Ho boloka metsi: etsa hore phofo ea putty e ome butle, e thusa grey calcium ts'ebetsong ea karabelo ea metsi.Kaho: lubrication ea cellulose, e ka etsa hore putty phofo e be le kaho e ntle.HPMC ha e kenye letsoho tšebetsong efe kapa efe ea lik'hemik'hale, empa e bapala karolo ea tšehetso feela.Putty phofo le metsi, leboteng, ke karabelo ea lik'hemik'hale, ka lebaka la moloko oa lintho tse ncha, lerako la putty phofo ho tloha leboteng, fatše ho ba phofo, ebe o sebelisa, eseng hantle, hobane o thehile ntho e ncha. (calcium carbonate).Motsoako o ka sehloohong oa phofo ea grey calcium ke motsoako oa Ca(OH)2,CaO le palo e nyenyane ea CaCO3,CaO+H2O=Ca(OH)2 — Ca(OH)2+CO2=CaCO3↓+H2O Gray calcium ka metsi le moea tlas'a ketso ea CO2, calcium carbonate, le HPMC feela metsi, thusa grey calcium karabelo e betere, ea eona ha ea ka ea kenya letsoho karabelong efe kapa efe.

9.HPMC non-ionic cellulose ether, kahoo seo e seng ionic ke eng?

A: Ka kakaretso, li-non-ion ke lintho tse sa ioniseng metsing.Ionization ke ho arohana ha electrolyte ho li-ion tse tsamaisoang mahala ka har'a motsoako o itseng, joalo ka metsi kapa joala.Ka mohlala, letsoai leo re le jang letsatsi le leng le le leng - sodium chloride (NaCl) e qhibiliha ka metsing 'me e ionize ho hlahisa li-ion tse sa lefelloeng tsa sodium (Na +) tse nang le tefiso e ntle le li-ion tsa chloride (Cl) tse nang le tefiso e mpe.Ke hore, HPMC ka metsing ha e ikarole ho li-ion tse chesitsoeng, empa e teng joalo ka limolek'hule.

10. Ke eng e amanang le mocheso oa gel oa hydroxypropyl methyl cellulose?

- Karabo: Mocheso oa mocheso oa gel oa HPMC o amana le dikahare tsa methoxyl, ho theola methoxyl content ↓, ho phahamisa mocheso oa gel.

11, putty phofo phofo le HPMC ha ho na kamano?

Karabo: phofo ea putty phofo haholo-holo le boleng ba molora oa calcium bo na le kamano e kholo haholo, 'me HPMC ha e na kamano e kholo haholo.Khalsiamo e tlase ea khalsiamo e bohlooho le karolo e sa nepahalang ea CaO le Ca(OH)2 ka k'halsiamo e bohlooho e tla etsa hore phofo e theohe.Haeba ho na le kamano e nyenyane le HPMC, joale ho boloka metsi a HPMC ho futsanehile, ho tla boela ho baka phofo.

12, hydroxypropyl methyl cellulose metsi a batang a qhibilihang le a chesang a qhibilihang nakong ea tlhahiso ea phapang ke efe?

- Karabo: Mofuta oa tharollo ea metsi a batang a HPMC ke kamora kalafo ea glyoxal, e kentsoeng metsing a batang ka potlako e qhalakantsoeng, empa ha e hlile ha e qhibilihe, viscosity e nyoloha, e qhibiliha.Mofuta oa thermosoluble ha o so alafshoe ka holim'a metsi ka glyoxal.Palo ea glyoxal e kholo, ho hasana ho potlakile, empa viscosity e lieha, chelete e nyane, ho fapana le hoo.

13, monko oa hydroxypropyl methyl cellulose (HPMC) o joang?

- Karabo: HPMC e hlahisoang ka mokhoa oa solvent e entsoe ka toluene le joala ba isopropyl.Haeba ho hlatsoa ha ho molemo haholo, ho tla ba le tatso e setseng.

14, litšebeliso tse fapaneng, mokhoa oa ho khetha hydroxypropyl methyl cellulose (HPMC) e nepahetseng?

- karabo: ho jeoa ke bolutu ka tšebeliso ea phofo ea ngoana: tlhokahalo e tlaase, viscosity 100 sekete, ho lokile, ke habohlokoa ho sireletsa metsi ho ba haufi le.Kopo ea seretse: litlhoko tse phahameng, litlhoko tse phahameng tsa viscosity, tse likete tse 150 ho ba betere.Kopo ea sekhomaretsi: tlhokahalo ea lihlahisoa tsa hang-hang, viscosity e phahameng.

15.Letlapa la hydroxypropyl methyl cellulose ke lefe?

– KARABO: Hydroxypropyl Methyl Cellulose, E khutsufalitsoeng e le HPMC kapa MHPC, kapa Hydroxypropyl Methyl Cellulose;Cellulose hydroxypropyl methyl ether;Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether.

16.HPMC ha ho sebelisoa putty powder, putty powder bubble lebaka lefe?

Karabo: HPMC ka putty phofo, thickening, metsi le kaho ea likarolo tse tharo.Ho se kopanele maikutlong afe kapa afe.Lisosa tsa li-bubble: 1, metsi a mangata haholo.2, tlase ha e omme, ka holim'a lera la ho phunya, hape ho bonolo ho blister.

17. Phapano ke efe lipakeng tsa HPMC le MC?

– Karabo :MC ke methyl cellulose, e entsoeng ka cellulose ether ka letoto la liketso le methane chloride e le etherifying agent ka mor'a hore k'hothone e hloekisitsoeng e phekoloe ka alkali.Ka kakaretso, tekanyo ea ho fetola ke 1.6 ~ 2.0, 'me ho qhibiliha ho fapana ho ea ka tekanyo ea ho kenya sebaka.Ke ea nonionic cellulose ether.

(1) Ho boloka metsi a methyl cellulose ho ipapisitse le palo ea eona ea tlatsetso, viscosity, botle ba likaroloana le sekhahla sa ho qhibiliha.Ka kakaretso eketsa palo e kholo, fineness e nyane, viscosity, sekhahla sa ho boloka metsi se phahame.Har'a bona, palo ea tlatsetso e na le tšusumetso e kholo ho boloka metsi, 'me viscosity ha e lekane le ho boloka metsi.Sekhahla sa ho qhibiliha se itšetlehile haholo ka tekanyo ea phetoho ea holim'a metsi le boleng ba likaroloana tsa likaroloana tsa cellulose.Ho li-ether tse 'maloa tse kaholimo, methyl cellulose le hydroxypropyl methyl cellulose sekhahla sa ho boloka metsi se phahame.

(2) Methyl cellulose e qhibiliha ka metsing a batang, ao ho leng thata ho qhibiliha ka metsing a chesang.Tharollo ea eona ea metsi e tsitsitse haholo ka hare ho pH = 3 ~ 12.E lumellana hantle le starch, guanidine gum le li-surfactants tse ngata.Gelation e etsahala ha mocheso o fihla mocheso oa gelation.

(3) Phetoho ea mocheso e tla ama ka botebo sekhahla sa ho boloka metsi sa methyl cellulose.Ka kakaretso, ha thempereichara e phahame, ho mpefala ha metsi ho boloka metsi.Haeba mocheso oa seretse o feta 40 ℃, ho bolokoa ha metsi a methyl cellulose ho tla mpefala haholo, e leng ho amang ho aha ha seretse ka botebo.

(4) Methyl cellulose e na le tšusumetso e hlakileng mabapi le ho hahoa le ho khomarela seretse."Adhesion" mona e bolela ho khomarela ho utluoa ke mosebeletsi pakeng tsa sesebelisoa le lerako la lerako, e leng ho hanyetsa ho kuta ha seretse.Ho khomarela ho hoholo, ho hanyetsa ho kuta ha seretse ho hoholo, matla a hlokoang ke basebetsi ha a ntse a sebelisoa le ona a maholo, 'me ho hahoa ha seretse ho futsanehile.Ka lihlahisoa tsa cellulose ether, ho khomarela ha methyl cellulose ho boemong bo itekanetseng.

HPMC bakeng sa hydroxypropyl methyl cellulose, e hloekisoa ka k'hothone ka mor'a phekolo ea alkali, e nang le propylene oxide le chloromethane e le etherifying agent, ka letoto la liketso le ho etsoa ka selulose e se nang ionic e kopantsoeng le ether.Tekanyo ea ho nka sebaka ka kakaretso ke 1.2 ~ 2.0.Thepa ea eona e fapana ho latela karolo ea methoxy le hydroxypropyl content.

(1) Hydroxypropyl methyl cellulose e qhibiliha habonolo metsing a batang, ao ho leng thata ho a qhibiliha ka metsing a chesang.Leha ho le joalo, mocheso oa eona oa gelation metsing a chesang ho hlakile hore o phahame ho feta oa methyl cellulose.Ho qhibiliha ha methyl cellulose metsing a batang le hona ho ile ha ntlafatsoa haholo.

(2) Viscosity ea hydroxypropyl methyl cellulose e amana le boima ba eona ba molek'hule, 'me ha boima ba limolek'hule bo phahame, ho ba le viscosity e phahameng.Mocheso o boetse o ama viscosity.Viscosity ea fokotseha ha mocheso o ntse o eketseha.Empa phello ea eona ea mocheso o phahameng oa viscosity e tlase ho feta ea methyl cellulose.Tharollo e tsitsitse ha e bolokiloe mocheso oa kamore.

(3) Hydroxypropyl methyl cellulose e tsitsitse ho acid le setsi, 'me tharollo ea eona ea metsi e tsitsitse haholo ka har'a pH = 2 ~ 12.Soda ea caustic le metsi a lime ha li na phello e fokolang ho thepa ea eona, empa alkali e ka potlakisa sekhahla sa ho qhibiliha le ho ntlafatsa viscosity.Hydroxypropyl methyl cellulose e tsitsitse ho matsoai a akaretsang, empa ha motsoako oa motsoako oa letsoai o phahame, viscosity ea hydroxypropyl methyl cellulose tharollo e atisa ho eketseha.

(4) Ho bolokoa ha metsi a hydroxypropyl methyl cellulose ho itšetlehile ka tekanyo ea eona le viscosity, 'me sekhahla sa ho boloka metsi sa hydroxypropyl methyl cellulose se phahame ho feta sa methyl cellulose ka tekanyo e tšoanang.

(5) Hydroxypropyl methyl cellulose e ka kopanngoa le metsoako ea polymer e qhibilihang ka metsi hore e be tharollo e tšoanang, e phahameng ea viscosity.Joalo ka joala ba polyvinyl, starch ether, sekhomaretsi sa meroho joalo-joalo.

(6) Ho khomarela ha hydroxypropyl methyl cellulose mohahong oa seretse ho phahame ho feta methyl cellulose.

(7) Hydroxypropyl methyl cellulose e na le khanyetso e ntle ea enzyme ho feta methyl cellulose, 'me monyetla oa ho senyeha ha enzyme ea eona o tlase ho feta oa methyl cellulose.

18. Ke eng e lokelang ho lebisoa tlhokomelo ho ts'ebeliso e sebetsang 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 ka ho fokotseha ha mocheso.Ha re bua ka viscosity ea sehlahisoa, re bua ka viscosity ea 2% ea sehlahisoa ka metsing ka likhato tse 20 tsa Celsius.

Ka ts'ebeliso e sebetsang, libakeng tse nang le phapang e kholo ea mocheso pakeng tsa lehlabula le mariha, ho lokela ho hlokomeloa hore 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 selulose e tla eketseha, 'me ha ho senya, maikutlo a tla ba boima.

Viscosity e bohareng : 75000-100000 haholo-holo e sebelisetsoang putty.

Lebaka: Ho boloka metsi hantle.

High viscosity :150000-200000 e sebelisoa haholo-holo bakeng sa polystyrene particle insulation mortar rabara phofo le vitrified beads insulation seretse.

Lebaka: viscosity e phahameng, seretse ha se bonolo ho theoha, ho phalla ho leketlile, ho ntlafatsa mohaho.

Empa ha re bua ka kakaretso, ha viscosity e phahame, ho boloka metsi ho molemo, lifeme tse ngata tse omeletseng tsa seretse, ha ho nahanoa ka litšenyehelo, li sebelisa selulose ea viscosity e mahareng (75000-100000) ho nka sebaka sa selulose se mahareng le se tlase (20000-40000) ho fokotsa chelete eo. ya tlatsetso.