1, tšebeliso e ka sehloohong ea hydroxypropyl methyl cellulose (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 bongaka ka tšebeliso. Hona joale, boholo ba sehlopha sa kaho ea malapeng, sehlopheng sa kaho, tekanyo ea phofo ea putty e kholo, hoo e ka bang 90% e sebelisetsoa ho etsa phofo ea putty, tse setseng li sebelisetsoa ho etsa seretse sa samente le sekhomaretsi.
2, hydroxypropyl methyl cellulose (HPMC) e arotsoe ka tse 'maloa, phapang ke efe tšebelisong ea eona?
HPMC e ka aroloa ka mofuta oa tharollo ea hang-hang le e chesang, lihlahisoa tsa hang-hang, metsing a batang li hasana kapele, li nyamela ka metsing, ka nako 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 viscous. Lihlahisoa tse qhibilihang tse chesang, ka metsing a batang, li ka hasana kapele ka metsing a chesang, tsa nyamela ka metsing a chesang, ha mocheso o theohela mochesong o itseng, viscosity e hlaha butle-butle, ho fihlela ho thehoa colloid e bonaletsang e viscous. Tharollo e chesang e ka sebelisoa feela ka phofo ea putty le seretse, ka har'a sekhomaretsi sa metsi le pente, ho tla ba le ketsahalo ea sehlopha, e ke ke ea sebelisoa. MOHLALA OA THAROLLO OA Hang-hang, LEBAKA LA TŠEBELISO LE BANG BO BANGATA, KA HO KHATHATSOA KE PHOFU EA NGOANA LE SEMORTARE, 'ME KA HO SEKHOMA LE HO KOAHETSA KA MOLLO, BOHLE BA KA SEBELISA, NTLE LE LITŠOANTŠISO TSE FAPANENG.
3, mekhoa ea ho qhibiliha ea hydroxypropyl methyl cellulose (HPMC) e na le tsona?
– A: Mokhoa oa ho qhala metsi a chesang: hobane HPMC ha e qhalane ka metsing a chesang, kahoo HPMC ea pele e ka qhalana ka ho lekana ka metsing a chesang, ebe e qhalana ka potlako ha e pholile, mekhoa e 'meli e tloaelehileng e hlalosoa ka tsela e latelang: 1), ka setshelong ka bongata ba metsi a chesang a hlokahalang, 'me e futhumale ho fihlela ho 70℃. Butle-butle eketsa hydroxypropyl methylcellulose tlas'a ho hlohlelletsa butle, HPMC e ile ea qala ho phaphamala holim'a metsi, ebe butle-butle e etsa slurry, tlas'a ho hlohlelletsa e pholisa slurry. 2), eketsa bongata bo hlokahalang ba 1/3 kapa 2/3 ea metsi ka setshelong, 'me u futhumale ho fihlela ho 70℃, ho latela mokhoa oa 1), ho hasana ha HPMC, ho lokisa slurry ea metsi a chesang; Ebe u eketsa bongata bo setseng ba metsi a batang ho slurry e chesang, hlohlelletsa 'me u pholise motsoako. Mokhoa oa ho kopanya phofo: Phofo ea HPMC le palo e kholo ea metsoako e meng e nang le phofo, e tsoakiloeng hantle ka blender, kamora ho eketsa metsi ho qhalana, ebe HPMC e ka qhalana ka nako ena, empa eseng ho kopana, hobane sekhutlo se seng le se seng se senyenyane, phofo e nyane feela ea HPMC, metsi a tla qhibiliha hang-hang. – Likhamphani tsa tlhahiso ea phofo le seretse sa putty li sebelisa mokhoa ona. Hydroxypropyl METHYL cellulose (HPMC) E SEBELISOA E LE sesebelisoa sa ho teteana le sesebelisoa sa ho boloka metsi ka har'a seretse sa phofo ea putty.
4, ho bonolo hakae le ho utloahala habonolo ho fumana boleng ba hydroxypropyl methyl cellulose (HPMC)?
– Karabo: (1) bosweu: le hoja bosweu bo ke ke ba tseba hore na HPMC e loketse ho sebediswa, mme haeba e eketswa tshebetsong ya tlhahiso ya moemedi wa ho sweufatsa, e tla ama boleng ba yona. Leha ho le jwalo, dihlahiswa tse ntle boholo ba tsona di tshweu. (2) botshepehi: Botshepehi ba HPMC ka kakaretso ke letlowa la 80 le letlowa la 100, morero o fokolang ka 120, Hebei HPMC boholo ke letlowa la 80, botshepehi bo bobebe, ka kakaretso bo molemo. (3) phetisetso: hydroxypropyl methyl cellulose (HPMC) ka metsing, ho thehwa ha colloid e bonaletsang, bona phetisetso ya yona, phetisetso e kgolo, e betere, thepa e sa qhibiliheng haholo ka hare. Ho kenella ha reactor e otlolohileng ka kakaretso ho molemo, reactor e otlolohileng e mpefala, empa e ke ke ya bontsha hore boleng ba tlhahiso ya reactor e otlolohileng bo betere ho feta ba tlhahiso ya reactor e otlolohileng, boleng ba sehlahiswa bo laolwa ke mabaka a mangata. (4) matla a kgoheli a itseng: ha matla a kgoheli a itseng a le maholo, boima bo betere bo betere. Ho feta moo, ka kakaretso hobane dikahare tsa hydroxypropyl di phahame, dikahare tsa hydroxypropyl di phahame, ebe ho boloka metsi ho molemo.
5, hydroxypropyl methyl cellulose (HPMC) ka bongata ba phofo ea putty?
– Karabo: HPMC ts'ebelisong ea 'nete ea tekanyo, ka tikoloho ea tlelaemete, mocheso, boleng ba molora oa calcium sebakeng seo, foromo ea phofo ea putty le "litlhoko tsa bareki tsa boleng", 'me ho na le tse fapaneng. Ka kakaretso, tekanyo ea putty e hanelang metsi ka 4 kg - 5 kg lipakeng. Mohlala: Phofo ea putty ea Beijing, boholo ba eona e beoa 5 kg; Guizhou, boholo ba eona ke 5 kg lehlabula le 4.5 kg mariha. Bongata ba Yunnan bo bonyenyane, ka kakaretso ke 3 kg -4 kg le tse ling. 'Me tekanyo ea HPMC ka putty ea 821 hangata ke 2 ~ 3 kg.
6, hydroxypropyl methyl cellulose (HPMC) ke bokae ba viscosity bo loketseng?
– Karabo: Tlola pelo ka PHOFU YA NGWANA KA KAKARETSO 100 SEKETE HO LOKILE, TLHOKO YA SEMORTAR E TELELE HAHOLO, O BATLA HO SEBELISA 150 SEKETE. Ho feta moo, karolo ya bohlokwa ka ho fetisisa ya HPMC ke ho boloka metsi, e latelwe ke ho teteana. Phofong ya putty, ha feela ho boloka metsi ho le hotle, viscosity e tlase (7-80 sekete), ho a kgoneha hape, ehlile, viscosity e kgolo, ho boloka metsi ho molemo, ha viscosity e feta 100 sekete, viscosity ha e na phello e kgolo ho bolokeng metsi.
7, hydroxypropyl methyl cellulose (HPMC) ke matšoao afe a mantlha a botekgeniki?
K: Boleng ba Hydroxypropyl le ho teteana, e leng seo basebelisi ba bangata ba amehileng ka sona. Boleng ba Hydroxypropyl bo hodimo, ho boloka metsi ka kakaretso ho betere. Ho teteana, ho boloka metsi, ho amana (empa e seng ho feletseng) le hona ho betere, le ho teteana, ka hara seretse sa samente ho molemo ho sebedisa tse ding.
8, hydroxypropyl methyl cellulose (HPMC) thepa e tala ea mantlha ke eng?
– Karabo: hydroxypropyl methyl cellulose (HPMC) ea thepa e tala ea mantlha: k'hothone e hloekisitsoeng, chloromethane, propylene oxide, lisebelisoa tse ling tse tala li na le, tablet alkali, asiti, toluene, isopropyl alcohol, jj.
9, HPMC ts'ebelisong ea phofo ea putty, karolo ea bohlokoa ke efe, ebang ke k'hemistri?
HPMC ka har'a phofo ea putty, ho teteana, ho boloka metsi le kaho ea likarolo tse tharo. Ho teteana: Cellulose e ka teteana ho bapala suspension, e le hore tharollo e lule e lekana holimo le tlase e le karolo e le 'ngoe, e thibela phallo e leketlile. Ho boloka metsi: etsa hore phofo ea putty e ome butle, karabelo ea calcium ea molora e thusang tlas'a ts'ebetso ea metsi. Kaho: Cellulose e na le phello ea ho tlotsa, e ka etsa hore phofo ea putty e be le kaho e ntle. HPMC ha e kenelle liketsong life kapa life tsa lik'hemik'hale, e bapala karolo ea thuso feela. Phofo ea putty e ekelitsoeng metsi, leboteng, ke karabelo ea lik'hemik'hale, hobane ho na le tlhahiso ea thepa e ncha, phofo ea putty leboteng e theoha ho tloha leboteng, e siloa hore e be phofo, ebe e sebelisoa, ha e sa le eo, hobane e entse thepa e ncha (calcium carbonate). Likarolo tse ka sehloohong tsa phofo ea khalsiamo e putsoa ke: Ca(OH)2, CaO le motsoako o monyane oa CaCO3, CaO+H2O=Ca(OH)2 – Ca(OH)2+CO2=CaCO3↓+H2O molora oa khalsiamo metsing le moeeng tlas'a ketso ea CO2, ho thehoa ha calcium carbonate, le ho boloka metsi feela ha HPMC, molora oa khalsiamo o thusang o molemo, oa eona ha oa ka oa kenya letsoho karabelong efe kapa efe.
10, HPMC ether e seng ionic cellulose, joale e seng ionic ke eng?
K: Ka kakaretso, nonionic ke ntho e ka metsing e sa ioniseng. Ionization ke mokhoa oo ka oona electrolyte e aroloang ho ba li-ion tse tjhajileng tse tsamaeang ka bolokolohi ka har'a solvent e itseng, joalo ka metsi kapa joala. Mohlala, sodium chloride (NaCl), letsoai leo re le jang letsatsi le letsatsi, lea qhibiliha ka metsing 'me lea ionise ho hlahisa li-ion tsa sodium tse tsamaeang ka bolokolohi (Na+) tse tjhajileng ka nepo le li-ion tsa chloride (Cl) tse tjhajileng hampe. Ka mantsoe a mang, HPMC ka metsing ha e arohane le li-ion tse tjhajileng, empa e teng e le limolek'hule.
11, mocheso oa gel ea hydroxypropyl methylcellulose le hore na e amana le eng?
– Karabo: Thempereichara ea gel ea HPMC e amana le tekanyo ea eona ea methoxy. Ha tekanyo ea methoxy e le tlase, mocheso oa gel o ba o phahameng.
12. Na ho na le kamano efe kapa efe pakeng tsa phofo ea putty le HPMC?
– Karabo: phofo ea putty le boleng ba calcium li na le kamano e ntle, 'me HPMC ha e na kamano e ngata haholo. Khalsiamo e tlase ea calcium le karolo ea CaO, Ca(OH)2 moloreng oa calcium ha ea lokela, e tla baka ho theoha ha phofo. Haeba e amana le HPMC, joale ho bolokoa ha metsi ha HPMC ho fokola, ho tla boela ho bake ho theoha ha phofo. Ka mabaka a itseng, ka kopo sheba potso ea 9.
13, mofuta oa hydroxypropyl methylcellulose o qhibilihang ka metsing a batang le mofuta o chesang o qhibilihang ka har'a tlhahiso, phapang ke efe?
– Mofuta oa :HPMC o qhibilihang ka metsing a batang o ka mor'a kalafo ea bokaholimo ba glyoxal, o kenngoa ka metsing a batang o hasanngoa kapele, empa ha oa qhibiliha hantle, viscosity e ea holimo, oa qhibiliha. Mofuta o qhibilihang ka mocheso ha oa ka oa phekoloa ka bokaholimo ka glyoxal. Bophahamo ba glyoxal bo boholo, ho hasana ho potlakile, empa viscosity e lieha, bophahamo bo bonyenyane, ho fapana le hoo.
14, hydroxypropyl methyl cellulose (HPMC) e na le monko oa se etsahalang?
– Karabo: HPMC e hlahisoang ka mokhoa oa ho qhibilihisa e entsoe ka toluene le isopropyl alcohol e le qhibilihisa. Haeba ho hlatsoa ho se monate haholo, ho tla ba le tatso e setseng.
15, tšebeliso e fapaneng, mokhoa oa ho khetha hydroxypropyl methyl cellulose (HPMC) e nepahetseng?
– Karabo: Tšebeliso ea phofo ea putty: tlhokahalo e tlase, viscosity ke 100 sekete, ho lokile, ntho ea bohlokoa ke ho boloka metsi a le betere. Tšebeliso ea seretse: tlhokahalo e phahame, tlhokahalo ke viscosity e phahameng, 150 sekete e lokela ho ba betere. Tšebeliso ea sekhomaretsi: hloka lihlahisoa tsa hang-hang, viscosity e phahameng.
16, hydroxypropyl methylcellulose lebitso le leng ke lefe?
A: Hydroxypropyl Methyl Cellulose, Senyesemane: Kakaretso ea Hydroxypropyl Methyl Cellulose: HPMC kapa lebitso le leng la MHPC: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose Hypromellose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl Methyl ether Hyprolose.
17, HPMC mabapi le tšebeliso ea phofo ea putty, putty phofo ea bubble ke eng?
HPMC ka phofo ea putty, ho teteana, ho boloka metsi le kaho ea likarolo tse tharo. Ha e kenelle karabelong efe kapa efe. Lebaka la lipululana: 1, metsi a beoa haholo. 2, tlase ha e ome, holimo le ho hohla lera, hape ho bonolo ho e pululana.
18. Foromo ea phofo ea putty bakeng sa mabota a kahare le a kantle?
– Karabo: Phofo ea putty e sa keneleng metsi bakeng sa lebota le ka hare: 750~ 850KG ea calcium e boima, 150~ 250KG ea calcium e putsoa, 4~ 5KG ea ether ea cellulose, le 1~ 2KG ea phofo ea polyvinyl alcohol li ka eketsoa ka nepo; Phofo ea putty ea lebota le ka ntle: samente e tšoeu 350KG, calcium e boima 500-550kg, calcium e putsoa 100-150kg, phofo ea latex 8-12kg, ether ea cellulose 5KG, fiber ea lehong 3KG.
19. Phapang ke efe pakeng tsa HPMC le MC?
– MC bakeng sa methyl cellulose, ke k'hothone e hloekisitsoeng ka mor'a kalafo ea alkali, ka methane chloride e le moemeli oa etherification, ka letoto la liketso le ether ea cellulose. Ka kakaretso, tekanyo ea phetolo ke 1.6 ~ 2.0, 'me ho qhibiliha ho fapana ho latela tekanyo ea phetolo. Ke ether ea cellulose e seng ea ionic.
(1) Ho boloka metsi ha methyl cellulose ho itshetlehile ka bongata ba ho eketsa ha yona, ho teteana, ho teteana ha dikarolwana le lebelo la ho qhalana ha yona. Ka kakaretso eketsa bongata bo boholo, ho teteana ho honyenyane, ho teteana, sekgahla se phahameng sa ho teteana ha metsi. Har'a tsona, bongata ba ho eketswa sekgahla sa ho teteana ha metsi bo na le tshusumetso e kgolo ka ho fetisisa, ho teteana le boemo ba sekgahla sa ho teteana ha metsi ha di lekane le kamano. Sekgahla sa ho qhaqha se itshetlehile haholo-holo ka tekanyo ya phetoho ya bokahodimo le ho teteana ha dikarolwana tsa cellulose. Ho ether ya cellulose e ka hodimo, sekgahla sa ho teteana ha metsi sa methyl cellulose le hydroxypropyl methyl cellulose se hodimo.
(2) Methyl cellulose e ka qhibilihisoa ka metsing a batang, metsi a chesang a qhibilihisitsoeng a tla kopana le mathata, tharollo ea eona ea metsi e maemong a pH=3~12 e tsitsitse haholo. E lumellana hantle le starch, gum ea guanidine le li-surfactants tse ngata. Gelation e etsahala ha mocheso o fihla mochesong oa gelation.
(3) Phetoho ea mocheso e tla ama sekhahla 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℃, ho boloka metsi ha methyl cellulose ho tla mpefala haholo, ho ame kaho ea seretse ka botebo.
(4) Methyl cellulose e na le tshusumetso e totobetseng kahong le ho kgomareleng ha seretse. Mona, “kgomarele” e bolela matla a kgomarelang a utlwahalang pakeng tsa sesebediswa sa mosebetsi le substrate ya lebota, ke hore, kganyetso ya ho kgaola ha seretse. Thepa ya kgomarele e kgolo, kganyetso ya ho kgaola ha seretse e kgolo, mme matla a hlokahalang ke basebetsi nakong ya tshebediso le ona a maholo, kahoo thepa ya kaho ya seretse e fokola.
Lihlahisoa tsa ether tsa cellulose, ho khomarela ha methyl cellulose ho maemong a mahareng. HPMC bakeng sa hydroxypropyl methyl cellulose, e entsoe ka k'hothone e hloekisitsoeng kamora kalafo ea alkalization, ka propylene oxide le chloromethane e le moemeli oa etherifying, ka letoto la liketso 'me e entsoe ka ether e tsoakiloeng ea cellulose e seng ea ionic. Tekanyo ea phetolo hangata ke 1.2 ~ 2.0. Thepa ea eona e angoa ke karolo ea methoxy le hydroxypropyl.
(1) hydroxypropyl methyl cellulose e qhibilihang ka metsing a batang, metsi a chesang a qhibilihisitsoeng a tla tobana le mathata. Empa mocheso oa gelation ea eona metsing a chesang o phahame haholo ho feta oa methyl cellulose. Ho qhibiliha ha methyl cellulose ka metsing a batang le hona ho ntlafetse haholo.
(2) ho teteana ha hydroxypropyl methyl cellulose ho amana le boima ba eona ba limolek'hule, 'me boima bo boholo ba limolek'hule ke ho teteana ho hoholo. Mocheso o tla boela o ama ho teteana ha eona, mocheso oa eketseha, ho teteana hoa fokotseha. Leha ho le joalo, ho teteana ha mocheso o phahameng ho tlase ho feta ha methyl cellulose. Tharollo e tsitsitse ha e bolokoa mochesong oa kamore.
(3) hydroxypropyl methyl cellulose e tsitsitse ho asiti le alkali, 'me tharollo ea eona ea metsi e tsitsitse haholo ho pH=2~12. Caustic soda le metsi a lime ha li na phello e kholo litšobotsing tsa eona, empa alkali e ka potlakisa sekhahla sa ho qhibiliha ha eona le ho ntlafatsa viscosity ea pin. Hydroxypropyl methyl cellulose e tsitsitse ho letsoai le akaretsang, empa ha mahloriso a tharollo ea letsoai a le holimo, viscosity ea tharollo ea hydroxypropyl methyl cellulose e atisa ho eketseha.
(4) Ho boloka metsi ha hydroxypropyl methyl cellulose ho itshetlehile ka bongata ba ekeditsweng, viscosity, jj., tekanyo e lekanang ya ho boloka metsi e phahame ho feta methyl cellulose.
(5) hydroxypropyl methyl cellulose e ka kopanngoa le metsoako ea polymer e qhibilihang ka metsing hore e be tharollo e tšoanang le e nang le viscosity e phahameng. Tse kang polyvinyl alcohol, starch ether, plant gum le tse ling.
(6) Ho khomarela ha hydroxypropyl methyl cellulose kahong ea seretse ho phahame ho feta ha methyl cellulose.
(7) hydroxypropyl methyl cellulose e na le khanyetso e betere ea enzymatic ho feta methyl cellulose, 'me monyetla oa hore enzymatic e senyehe tharollong ea eona o tlase ho feta oa methyl cellulose.
20, kamano pakeng tsa ho teteana le mocheso oa HPMC, e lokelang ho eloa hloko ts'ebelisong e sebetsang?
– Karabo: Viscosity ea HPMC e lekana ka tsela e fapaneng le mocheso, ke hore, viscosity ea eketseha ha mocheso o fokotseha. Ha re bua ka viscosity ea sehlahisoa, re bolela sephetho sa ho lekanya tharollo ea eona ea metsi ea 2% mochesong oa likhato tse 20 tsa Celsius. Tšebelisong e sebetsang, libakeng tse nang le phapang e kholo ea mocheso pakeng tsa lehlabula le mariha, tlhokomelo e lokela ho lefshoa ho khothaletso ea ho sebelisa viscosity e tlase haholo mariha, e leng se thusang haholo kaho. Ho seng joalo, ha mocheso o le tlase, viscosity ea cellulose e tla eketseha, ha ho hohloa, ho ikutloa ho tla ba boima. Viscosity e mahareng :75000-100000 e sebelisoa haholo-holo ka lebaka la putty: ho boloka metsi hantle viscosity e phahameng :150000-200000 e sebelisoa haholo-holo bakeng sa likaroloana tsa polystyrene tse sireletsang mocheso seretse sekhomaretsi thepa ea phofo le lifaha tsa khalase tse sireletsang mocheso seretse. Lebaka: viscosity e phahameng, seretse ha se bonolo ho lahla molora le phallo e leketlileng, ho ntlafatsa kaho. Empa ka kakaretso, ha viscosity e phahame, ho tla ba le ho boloka metsi ho betere, kahoo lifeme tse ngata tsa seretse se omileng li nahana ka litšenyehelo, ka cellulose e mahareng ea viscosity (75,000-100000) ho nkela cellulose e tlaase ea viscosity (20,000-40000) sebaka ho fokotsa bongata ba ho eketsa.
Nako ea poso: Hlakola-05-2024