1. Tšebeliso e ka sehloohong ea hydroxypropyl methylcellulose (HPMC) ke efe?
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 morero. 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.
2. Ho na le mefuta e 'maloa ea hydroxypropyl methylcellulose (HPMC), 'me phapang ea tšebeliso ea tsona ke efe?
HPMC e ka aroloa ka mofuta oa hang-hang le mofuta oa ho qhibiliha ho chesang. Sehlahisoa sa mofuta oa hang-hang se hasana kapele metsing a batang 'me se nyamela ka metsing. Nakong ena, mokelikeli ha o na viscosity hobane HPMC e hasana feela ka metsing ntle le 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 tsa ho qhibiliha ho chesang, 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. Mekhoa ea ho qhaqha ha hydroxypropyl methylcellulose (HPMC) ke efe?
Mokhoa oa ho qhala ka metsi a chesang: Kaha HPMC ha e qhale ka metsing a chesang, HPMC e ka qhalanngoa ka ho lekana ka metsing a chesang mohatong oa pele, ebe e qhala kapele ha e pholile. Mekhoa e 'meli e tloaelehileng e hlalosoa ka tsela e latelang:
1) 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), 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 teteaneng le se bolokang metsi ka har'a seretse sa phofo ea putty.]
4. U ka ahlola boleng ba hydroxypropyl methylcellulose (HPMC) joang ka bonolo le ka tlhaho?
(1) 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.
(2) 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 e hlahisoang Hebei ke letlooeng la 80. Ha letlooeng le letenya le letenya, ka kakaretso, ho molemo.
(3) Phetiso ea leseli: kenya hydroxypropyl methylcellulose (HPMC) ka metsing ho etsa colloid e bonaletsang, 'me u shebe phetiso ea eona ea leseli. Ha phetiso ea leseli e le kholoanyane, ho molemo, ho bontša hore ho na le lintho tse sa qhibiliheng ho eona. . Ho kenella ha li-reactor tse otlolohileng ka kakaretso ho hotle, 'me ha li-reactor tse otlolohileng ho mpefala, empa ha ho bolele hore boleng ba li-reactor tse otlolohileng bo betere ho feta ba li-reactor tse otlolohileng, 'me boleng ba sehlahisoa bo khethoa ke lintlha tse ngata.
(4) Matla a khoheli a itseng: Ha matla a khoheli a itseng a le maholo, boima ba ’ona bo ba betere. Matla a khoheli a maholo, ka kakaretso hobane bokahare ba sehlopha sa hydroxypropyl ho sona bo phahame, ’me bokahare ba sehlopha sa hydroxypropyl bo phahame, ho boloka metsi ho ba betere.
5. Ke bokae ba hydroxypropyl methylcellulose (HPMC) ka har'a phofo ea putty?
Bongata ba HPMC bo sebediswang ditshebedisong tse sebetsang bo fapana ho latela tikoloho ya tlelaemete, mocheso, boleng ba khalsiamo ya molora wa lehae, foromo ya phofo ya putty le "boleng bo hlokoang ke bareki". Ka kakaretso, pakeng tsa 4 kg le 5 kg. Mohlala: boholo ba phofo ya putty Beijing ke 5 kg; boholo ba phofo ya putty Guizhou ke 5 kg hlabula le 4.5 kg mariha; bongata ba putty Yunnan bo nyane haholo, ka kakaretso ho tloha ho 3 kg ho isa ho 4 kg, jj.
6. Ke bokae bo nepahetseng ba hydroxypropyl methylcellulose (HPMC)?
Phofo ea putty ka kakaretso ke li-yuan tse 100,000, 'me litlhoko tsa seretse li phahame, 'me li-yuan tse 150,000 lia hlokahala bakeng sa tšebeliso e bonolo. Ho feta moo, mosebetsi oa bohlokoa ka ho fetisisa oa HPMC ke ho boloka metsi, o lateloa ke ho teteana. Phofong ea putty, hafeela 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 ho sa na letho le leholo.
7. Lipontšo tse ka sehloohong tsa tekheniki tsa hydroxypropyl methylcellulose (HPMC) ke life?
Bongata ba basebelisi ba amehile ka dikahare tsa hydroxypropyl le viscosity, ka kakaretso ba na le ho boloka metsi ho betere. E nang le viscosity e phahameng e na le ho boloka metsi ho betere, ka tekanyo e itseng (eseng ka ho felletseng), mme e nang le viscosity e phahameng e sebediswa hamolemo ho seretse sa samente.
8. Lisebelisoa tse ka sehloohong tsa hydroxypropyl methylcellulose (HPMC) ke life?
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.
9. Mosebetsi o ka sehloohong oa ho sebelisoa ha HPMC phofong ea putty ke ofe, hona na e etsahala ka lik'hemik'hale?
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.
10. HPMC ke ether ya cellulose e seng ya ionic, jwale e seng ya ionic ke eng?
Ka mantsoe a tloaelehileng, li-non-ion ke lintho tse sa ioning 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 ionis 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.
11. Thempereichara ea gel ea hydroxypropyl methylcellulose e amana le eng?
Mocheso oa gel oa HPMC o amana le methoxy ea eona, ha methoxy e le tlase ↓, mocheso oa gel o le holimo ↑.
12. Na ho na le kamano efe kapa efe pakeng tsa lerotholi la phofo ea putty le HPMC?
Ho lahleheloa ke phofo ea phofo ea putty ho amana haholo le boleng ba calcium ea molora, 'me ha ho amane hakaalo le HPMC. Khalsiamo e tlase ea calcium e putsoa le karolelano e sa lokelang ea CaO le Ca(OH)2 ka har'a calcium e putsoa li 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. Ka mabaka a itseng, ka kopo sheba potso ea 9.
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?
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?
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. Mokhoa oa ho khetha hydroxypropyl methylcellulose (HPMC) e loketseng merero e fapaneng?
Tšebeliso ea phofo ea putty: litlhoko li tlase, viscosity ke 100,000, ho lekane, ntho ea bohlokoa ke ho boloka metsi hantle. Tšebeliso ea seretse: litlhoko tse phahameng, viscosity e phahameng, 150,000 e betere. Tšebeliso ea sekhomaretsi: lihlahisoa tsa hang-hang tse nang le viscosity e phahameng lia hlokahala.
16. Lebitso le tsebahalang la hydroxypropyl methylcellulose ke lefe?
Hydroxypropyl methyl cellulose, Senyesemane: Hydroxypropyl Methyl Cellulose Kakaretso: HPMC kapa MHPC Lebitso le leng: hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropylmethyl Cellulose ether. Cellulose hydroxypropyl methyl ether Hyprolose.
17. Tšebeliso ea HPMC ka har'a phofo ea putty, lebaka la lipululana ka har'a phofo ea putty ke lefe?
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.
18. Foromo ea phofo ea putty bakeng sa mabota a kahare le a kantle ke efe?
Phofo ea putty ea lebota e ka hare: calcium e boima 800KG, calcium ea molora 150KG (starch ether, botala bo hloekileng, mobu oa Pengrun, citric acid, polyacrylamide, jj. li ka eketsoa ka nepo)
Phofo ea putty ea lebota la kantle: samente 350KG calcium e boima 500KG lehlabathe la quartz 150KG phofo ea latex 8-12KG ether ea cellulose 3KG ether ea starch 0.5KG faeba ea lehong 2KG
19. Phapang ke efe pakeng tsa HPMC le MC?
MC ke methyl cellulose, e entsoeng ka ether ea cellulose ka ho phekola k'hothone e hloekisitsoeng ka alkali, ho sebelisoa methane chloride e le moemeli oa etherification, le ho feta letotong la liketso. Ka kakaretso, tekanyo ea phetolo ke 1.6 ~ 2.0, 'me ho qhibiliha ho boetse ho fapane ka maemo a fapaneng a phetolo. Ke ea ether ea cellulose e seng ea ionic.
(1) Ho boloka metsi ha methyl cellulose ho itshetlehile ka bongata ba yona ba ho eketsa, ho teteana, ho teteana ha dikarolwana le sekhahla sa ho qhalana. Ka kakaretso, haeba bongata ba ho eketsa bo le boholo, ho teteana ho bo bonyenyane, mme ho teteana ho le hoholo, sekhahla sa ho teteana ha metsi se hodimo. Har'a tsona, bongata ba ho eketsa bo na le tshusumetso e kgolo ka ho fetisisa sekgahla sa ho boloka metsi, mme boemo ba ho teteana ha bo tsamaellane ka ho toba le boemo ba sekhahla sa ho teteana ha metsi. Sekgahla sa ho qhaqha se itshetlehile haholo-holo ka tekanyo ya phetoho ya bokahodimo ba dikarolwana tsa cellulose le ho teteana ha dikarolwana. Har'a di-ether tsa cellulose tse ka hodimo, methyl cellulose le hydroxypropyl methyl cellulose di na le sekhahla se phahameng sa ho teteana ha metsi.
(2) Methylcellulose e qhibiliha metsing a batang, 'me ho tla ba thata ho e qhibilihisa metsing a chesang. Tharollo ea eona ea metsi e tsitsitse haholo ka har'a pH=3~12. E lumellana hantle le starch, gum ea guar, jj. le li-surfactants tse ngata. Ha mocheso o fihla mochesong oa gelation, gelation e etsahala.
(3) Liphetoho mochesong li tla ama sekgahla sa ho boloka metsi sa methyl cellulose ka botebo. Ka kakaretso, ha mocheso o phahame, ho boloka metsi ho mpefala. Haeba mocheso oa seretse o feta 40°C, ho boloka metsi ha methyl cellulose ho tla fokotseha haholo, e leng se tla amang kaho ea seretse ka botebo.
(4) Methyl cellulose e na le phello e kholo kahong le ho khomareleng ha seretse. "Ho khomarela" mona ho bolela matla a khomareleng a utloahalang pakeng tsa sesebelisoa sa sesebelisoa sa mosebetsi le substrate ea lebota, ke hore, khanyetso ea ho kuta ha seretse. Ho khomarela ho hoholo, khanyetso ea ho kuta ha seretse e kholo, 'me matla a hlokoang ke basebetsi ts'ebetsong ea ts'ebeliso le ona a maholo, 'me ts'ebetso ea kaho ea seretse e fokola. Ho khomarela ha Methyl cellulose ho boemong bo itekanetseng lihlahisoa tsa ether tsa cellulose.
HPMC ke hydroxypropyl methylcellulose, e leng ether e tsoakiloeng ea cellulose e seng ionic e entsoeng ka k'hothone e hloekisitsoeng ka mor'a alkalization, e sebelisang propylene oxide le methyl chloride e le li-etherification agents, le ka letoto la liketso. Tekanyo ea ho nkeloa sebaka ka kakaretso ke 1.2 ~ 2.0. Thepa ea eona e fapane ka lebaka la likarolelano tse fapaneng tsa methoxyl le hydroxypropyl.
(1) Hydroxypropyl methylcellulose e qhibiliha habonolo metsing a batang, 'me e tla tobana le mathata ha e qhibiliha ka metsing a chesang. Empa mocheso oa eona oa gelation metsing a chesang o phahame haholo ho feta oa methyl cellulose. Ho qhibiliha ha eona metsing a batang le hona ho ntlafetse haholo ha ho bapisoa le methyl cellulose.
(2) Ho teteana ha hydroxypropyl methylcellulose ho amana le boima ba eona ba limolek'hule, 'me ha boima ba limolek'hule bo le boholo, ho teteana ho ba holimo. Mocheso le oona o ama ho teteana ha eona, ha mocheso o ntse o eketseha, ho teteana hoa fokotseha. Leha ho le joalo, ho teteana ha eona ho phahameng ho na le phello e tlase ea mocheso ho feta methyl cellulose. Tharollo ea eona e tsitsitse ha e bolokoa mochesong oa kamore.
(3) Hydroxypropyl methylcellulose e tsitsitse ho ea ho asiti le alkali, 'me tharollo ea eona ea metsi e tsitsitse haholo ho ea ho pH=2~12. Caustic soda le metsi a lime ha li na phello e kholo ts'ebetsong ea eona, empa alkali e ka potlakisa ho qhibiliha ha eona le ho eketsa viscosity ea eona. Hydroxypropyl methylcellulose e tsitsitse ho ea ho letsoai le tloaelehileng, empa ha mahloriso a tharollo ea letsoai a le holimo, viscosity ea tharollo ea hydroxypropyl methylcellulose e atisa ho eketseha.
(4) Ho boloka metsi ha hydroxypropyl methylcellulose ho itshetlehile ka bongata ba yona ba ho eketsa, viscosity, jj., mme sekgahla sa yona sa ho boloka metsi tlasa bongata bo lekanang ba ho eketsa se hodimo ho feta sa methyl cellulose.
(5) Hydroxypropyl methylcellulose e ka kopanngoa le metsoako ea polymer e qhibilihang ka metsing ho etsa tharollo e tšoanang le e nang le viscosity e phahameng. Joalo ka polyvinyl alcohol, starch ether, vegetable gum, jj.
(6) Ho khomarela ha hydroxypropyl methylcellulose kahong ea seretse ho phahame ho feta ha methylcellulose.
(7) Hydroxypropyl methylcellulose e na le khanyetso e betere ea lienzyme ho feta methylcellulose, 'me tharollo ea eona ha e na monyetla oa ho senyeha ke lienzyme ho feta methylcellulose.
20. Ke eng e lokelang ho elwa hloko ts'ebelisong ea 'nete ea kamano pakeng tsa viscosity le mocheso oa HPMC?
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.
Ha ho sebelisoa mekhoa e sebetsang, ho lokela ho hlokomeloa hore libakeng tse nang le phapang e kholo ea mocheso pakeng tsa lehlabula le mariha, ho khothalletsoa ho sebelisa viscosity e tlase mariha, e leng se thusang haholo kahong. Ho seng joalo, ha mocheso o le tlase, viscosity ea cellulose e tla eketseha, 'me letsoho le tla ba boima ha ho hohloa.
Vithesis e mahareng: 75000-100000 e sebediswa haholo bakeng sa putty
Lebaka: ho boloka metsi hantle
Ho teteana ho hoholo: 150000-200000 E sebediswa haholo bakeng sa seretse sa polystyrene sa ho thibela mocheso wa di-particle le phofo ya rabara ya ho thibela mocheso wa di-microbead tse nang le vitrified.
Lebaka: Ho teteana ho hoholo, seretse ha se bonolo ho se wela fatshe, ho wa, mme kaho e ntlafaditswe.
Empa ka kakaretso, ha viscosity e phahame, ho boloka metsi ho ba betere. Ka hona, ha ho nahanoa ka litšenyehelo, lifeme tse ngata tsa seretse sa phofo e omileng li nkela cellulose e nang le viscosity e mahareng le e tlase (20000-40000) sebaka ka cellulose e nang le viscosity e mahareng (20000-40000) ho fokotsa bongata ba ho eketsa.
Nako ea poso: Pulungoana-18-2022