1. Tšebeliso e ka sehloohong ea hydroxypropyl methylcellulose ke efe?
HPMC e sebelisoa haholo ka thepa ea moaho, likoahelo, li-resin tsa maiketsetso, lirafshoa, meriana, lijo, masela, temo, litlolo, koae le liindasteri tse ling. HPMC e ka aroloa ka sehlopha sa indasteri, sehlopha sa lijo le sehlopha sa meriana ho latela ts'ebeliso ea eona.
2. Ho na le mefuta e 'maloa ea hydroxypropyl methylcellulose. Liphapang ke life pakeng tsa tsona?
HPMC ka aroloa ka mofuta hang-hang (brand suffix "S") le hot-soluble mofuta. Lihlahisoa tsa mofuta oa hang-hang li hasana ka potlako metsing a batang 'me li nyamela ka metsing. Ka nako ena, mokelikeli ha o na viscosity hobane HPMC e qhalakane feela metsing 'me ha e na tharollo ea sebele. Kamora hoo e ka bang (ho hlohlelletsa) metsotso e 2, viscosity ea mokelikeli e eketseha butle-butle 'me ho thehoa colloid e hlakileng ea viscous. Lihlahisoa tse qhibilihang ka har'a metsi a batang, li ka qhalana ka potlako metsing a chesang 'me tsa nyamela metsing a chesang. Ha mocheso o theohela mocheso o itseng (ho ea ka mocheso oa gel oa sehlahisoa), viscosity e hlaha butle-butle ho fihlela ho thehoa colloid e hlakileng le ea viscous.
3. Mekhoa ea tharollo ea hydroxypropyl methylcellulose ke efe?
1. Mefuta eohle e ka ekeletsoa boitsebisong ka ho kopanya ho omileng;
2. E hloka ho kenngoa ka ho toba ho mocheso o tloaelehileng oa metsi a nang le metsi. Ho molemo ho sebelisa mofuta oa ho hasana ha metsi a batang. Kamora ho eketsoa, hangata e fihla botenya ka hare ho metsotso e 10-90 (hlohlelletsa, hlohlelletsa, hlohlelletsa)
3. Bakeng sa mehlala e tloaelehileng, hlohlelletsa le ho qhalakanya ka metsi a chesang pele, ebe u eketsa metsi a batang ho qhibiliha ka mor'a ho hlohlelletsa le ho pholile.
4. Haeba agglomeration kapa wrapping e etsahala nakong ea ho qhibiliha, ke hobane ho tsosoa ha hoa lekana kapa mohlala o tloaelehileng o kenngoa ka ho toba metsing a batang. Mothating ona, tsosa ka potlako.
5. Haeba li-bubble li hlahisoa nakong ea ho qhibiliha, li ka siuoa lihora tse 2-12 (nako e tobileng e itšetlehile ka ho tsitsa ha tharollo) kapa ho tlosoa ka vacuum extraction, pressurization, joalo-joalo, 'me palo e loketseng ea moemeli oa defoaming e ka boela ea tlosoa. tlatsetsoa.
4. Joang ho ahlola boleng ba hydroxypropyl methylcellulose habonolo le ka mokhoa o hlakileng?
1. Bosoeu. Le hoja bosoeu bo ke ke ba ahlola hore na HPMC e ntle kapa che, 'me ho eketsa lisebelisoa tse tšoeu nakong ea tlhahiso ho tla ama boleng ba eona, lihlahisoa tse ngata tse ntle li na le bosoeu bo botle.
2. Fineness: HPMC fineness ka kakaretso ke 80 mesh le 100 mesh, ka tlase ho 120, e ntle ho feta.
3. Ho fetisa leseli: HPMC e etsa colloid e bonaletsang ka metsing. Sheba phetiso ea leseli. Ha leseli le le leholo, ho na le matla a ho phunyeletsa, ho bolelang hore ho na le lintho tse fokolang tse sa tsitsang ho eona. Reactor e otlolohileng hangata e ntle, 'me reactor e tšekaletseng e tla ntša tse ling. Empa ho ke ke ha boleloa hore boleng ba tlhahiso ea li-kettle tse otlolohileng bo molemo ho feta tsa li-kettle tse tšekaletseng. Ho na le lintlha tse ngata tse khethollang boleng ba sehlahisoa.
4. Matla a khoheli a khethehileng: Ha matla a khoheli a itseng a le moholo, boima bo ba betere. Ha matla a khoheli a itseng a e-ba kholoanyane, ke moo hydroxypropyl e leng holimo. Ka kakaretso, ha maemo a hydroxypropyl a phahame, ho boloka metsi ho betere.
5. Ke hydroxypropyl methylcellulose e kae e sebelisoang ka putty powder?
Palo ea HPMC e sebelisoang lits'ebetsong tsa sebele e fapana ho ea ka libaka, ho bua ka kakaretso, e pakeng tsa 4-5 kg, ho itšetlehile ka boemo ba leholimo, mocheso, boleng ba molora oa k'halsiamo ea sebakeng seo, phofo ea putty le litlhoko tsa boleng ba bareki.
6. Viscosity ea hydroxypropyl methylcellulose ke eng?
Putty powder ka kakaretso e bitsa RMB 100,000, ha seretse se na le litlhoko tse phahameng. E bitsa RMB 150,000 hore e be bonolo ho e sebelisa. Ho feta moo, mosebetsi oa bohlokoa haholo oa HPMC ke ho boloka metsi, ho lateloa ke ho teteana. Ka phofo ea putty, hafeela ho boloka metsi ho le molemo 'me viscosity e tlaase (7-8), hoa khoneha hape. Ha e le hantle, ha ho na le viscosity e kholo, ho molemo ho boloka metsi a lekanyelitsoeng. Ha viscosity e ka holimo ho 100,000, viscosity ha e na phello e fokolang ho boloka metsi.
7. Matšoao a mantlha a tekheniki a hydroxypropyl methylcellulose ke afe?
Likahare tsa Hydroxypropyl
Likahare tsa methyl
viscosity
Molora
ho lahleheloa ke boima ba 'mele
8. Lisebelisoa tsa mantlha tsa hydroxypropyl methylcellulose ke life?
Lisebelisoa tsa mantlha tsa HPMC: k'hothone e hloekisitsoeng, methyl chloride, propylene oxide, lisebelisoa tse ling tse tala, caustic soda le acid toluene.
9. Kopo le mosebetsi o ka sehloohong oa hydroxypropyl methylcellulose ka putty powder, na ke lik'hemik'hale?
Ka putty powder, e bapala mesebetsi e meraro e meholo: ho teteaneng, ho boloka metsi le ho haha. Ho ba motenya ho ka etsa hore selulose e be motenya 'me ha e-ba le karolo e emisang, ho boloka motsoako oa tharollo o le holimo le tlase le ho thibela ho theoha. Ho boloka metsi: Etsa hore phofo ea putty e ome butle butle 'me u thuse k'halsiamo e bohlooho ho itšoara tlas'a ketso ea metsi. Mosebetsi: Cellulose e na le phello ea ho tlotsa, e etsang hore phofo ea putty 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 tšehetso feela.
10. Hydroxypropyl methylcellulose ke ether e seng ea ionic cellulose, kahoo mofuta o seng oa ionic ke ofe?
Ha re bua ka kakaretso, lintho tse inert ha li kenye letsoho tšebetsong ea lik'hemik'hale.
CMC (carboxymethylcellulose) ke selulose ea cationic mme e tla fetoha litšifa tsa tofu ha e pepesetsoa molora oa calcium.
11. Mocheso oa gel oa hydroxypropyl methylcellulose o amana le eng?
Thempereichara ea gel ea HPMC e amana le litaba tsa eona tsa methoxyl. Ha maemo a methoxyl a le tlase, mocheso oa gel o phahame.
12. Na ho na le kamano pakeng tsa putty powder le hydroxypropyl methylcellulose?
Sena ke sa bohlokoa! HPMC e na le paballo e mpe ea metsi 'me e tla baka phofo.
13. Phapang ke efe ts'ebetsong ea tlhahiso pakeng tsa tharollo ea metsi a batang le metsi a chesang a hydroxypropyl methylcellulose?
Mofuta oa HPMC o qhibilihang ka metsi a batang o qhalakanngoa ka potlako metsing a batang ka mor'a ho phekoloa ka holim'a metsi ka glyoxal, empa ha e le hantle ha e qhibilihe. The viscosity ea phahama, ke hore, e qhibiliha. Mofuta o chesang oa ho qhibiliha ha o phekoloe ka holimo ka glyoxal. Glyoxal e kholo ka boholo mme e hasana ka potlako, empa e na le viscosity e liehang le molumo o monyenyane, le ka tsela e fapaneng.
14. Monko oa hydroxypropyl methylcellulose ke ofe?
HPMC e hlahisoang ke mokhoa oa solvent e entsoe ka toluene le joala ba isopropyl e le lihlapolli. Haeba e sa hlatsuoa hantle, ho tla ba le monko o setseng. (Neutralization le recycling ke ts'ebetso ea bohlokoa bakeng sa monko)
15. U ka khetha hydroxypropyl methylcellulose e nepahetseng joang bakeng sa litšebeliso tse fapaneng?
Putty powder: litlhoko tse phahameng tsa ho boloka metsi le boiketlo bo botle ba kaho (letšoao le khothalletsoang: 7010N)
Seretse se tloaelehileng se thehiloeng ho samente: ho boloka metsi a mangata, ho hanyetsa mocheso o phahameng, viscosity ea hang-hang (sekhahla se khothalletsoang: HPK100M)
Sesebelisoa sa sekhomaretsi sa kaho: sehlahisoa sa hang-hang, viscosity e phahameng. (Letšoao le khothalelitsoeng: HPK200MS)
Seretse sa gypsum: ho boloka metsi a mangata, viscosity e tlaase-tlaase, viscosity hang-hang (sekhahla se khothalletsoang: HPK600M)
16. Lebitso le leng la hydroxypropyl methylcellulose ke lefe?
HPMC kapa MHPC e boetse e tsejoa e le hydroxypropyl methylcellulose le hydroxypropyl methylcellulose ether.
17. Ho sebelisoa ha hydroxypropyl methylcellulose ka putty powder. Ke eng e etsang hore putty powder e be foam?
HPMC e bapala likarolo tse tharo tse kholo ho putty powder: ho teteana, ho boloka metsi le ho haha. Mabaka a li-bubble ke:
1. Kenya metsi a mangata haholo.
2. Haeba botlaaseng bo sa omella, ho hohola lera le leng ka holimo ho tla baka makhopho habonolo.
18. Phapano ke efe lipakeng tsa hydroxypropyl methylcellulose le MC:
MC, methyl cellulose, e entsoe ka k'hothone e hloekisitsoeng ka mor'a phekolo ea alkali, e sebelisa methane chloride e le etherifying agent, le letoto la liketso ho hlahisa cellulose ether. Tekanyo e akaretsang ea ho nkela sebaka ke 1.6-2.0, 'me ho qhibiliha ha likhato tse fapaneng tsa ho nka sebaka ho boetse ho fapane. Ke ether e seng ea ionic cellulose.
(1) Ho boloka metsi a methylcellulose ho ipapisitse le palo ea eona ea tlatsetso, viscosity, botle ba likaroloana le sekhahla sa ho qhibiliha. Ka kakaretso, palo ea tlatsetso e kholo, botle bo nyane, viscosity e phahame, 'me sekhahla sa ho boloka metsi se phahame. Chelete ea tlatsetso e na le tšusumetso e kholo ho sekhahla sa ho boloka metsi, 'me viscosity ha e amane le sekhahla sa ho boloka metsi. Sekhahla sa ho qhibiliha haholo-holo se itšetlehile ka tekanyo ea phetoho ea holim'a metsi le bokhabane ba likaroloana tsa cellulose. Har'a li-ether tsa cellulose tse ka holimo, methylcellulose le hydroxypropylmethylcellulose li na le litekanyetso tse phahameng tsa ho boloka metsi.
(2) Methyl cellulose e ka qhibiliha ka metsing a batang, empa e tla kopana le bothata ba ho qhibiliha metsing a chesang. Tharollo ea eona ea metsi e tsitsitse haholo sebakeng sa pH = 3-12, 'me e lumellana hantle le starch le li-surfactants tse ngata. Ha mocheso o fihla ho gel Ha mocheso oa gelation o eketseha, ho tla etsahala gelation.
(3) Liphetoho tsa mocheso li tla ama ka ho teba tekanyo ea ho boloka metsi ea methylcellulose. Ka kakaretso, ha mocheso o phahame, sekhahla sa ho boloka metsi se mpefala le ho feta. Haeba mocheso oa seretse o feta likhato tse 40, ho boloka metsi a methylcellulose ho tla senyeha haholo, ho ama ka ho teba ho hahoa ha seretse.
(4) Methylcellulose e na le tšusumetso e kholo mohahong le ho khomarela seretse. Ho khomarela mona ho bolela ho khomarela ho utloahalang pakeng tsa sesebelisoa sa kopo ea mosebeletsi le thepa ea motheo ea lerako, ke hore, ho hanyetsa ha seretse. Sekhomaretsi se phahame, khanyetso ea ho kuta ea seretse e phahame, 'me matla a hlokoang ke basebetsi nakong ea tšebeliso a boetse a phahame, kahoo ts'ebetso ea kaho ea seretse e futsanehile.
Nako ea poso: Jan-31-2024