1, tšebeliso e ka sehloohong ea hydroxypropyl methyl cellulose (HPMC) ke efe?
Karabo:HPMCe 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 ho latela tšebeliso. Hona joale e entsoeng hae haholo-holo ke boemo ba kaho, boemong ba kaho, palo ea phofo ea putty e kholo haholo, hoo e ka bang 90% e sebelisetsoa ho etsa phofo ea putty, karolo e setseng e sebelisetsoa ho etsa seretse sa samente le sekhomaretsi.
2, hydroxypropyl methyl cellulose (HPMC) e arotsoe ka mefuta e 'maloa, phapang ke efe pakeng tsa tšebeliso ea eona?
Karabo: HPMC e ka aroloa ka lihlahisoa tse qhibilihang hang-hang le tse qhibilihang hang-hang, lihlahisoa tse qhibilihang hang-hang, tse qhalakanngoang ka metsing a batang kapele, tse nyamelang ka metsing, ka nako ena mokelikeli ha o na viscosity, hobane HPMC e qhalakanngoa 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 ka mocheso, tse kopaneng ka metsi a batang, li ka ba ka metsing a chesang, tsa qhalakanngoa kapele, tsa nyamela ka metsing a chesang, ho fihlela mocheso o theohela mochesong o itseng, viscosity e hlaha butle-butle, ho fihlela ho thehoa ha colloid e bonaletsang e viscous. Mofuta o qhibilihang ka mocheso o ka sebelisoa feela ka phofo ea putty le seretse, ka sekhomaretsi sa metsi le seretse, ho ka hlaha ketsahalo ea agglomeration, e ke ke ea sebelisoa. Mohlala oa ho qhala hang-hang, sebaka sa ts'ebeliso se sephara hanyane, ka ho teneha ka phofo ea bana le seretse, 'me ka sekhomaretsi sa metsi le seretse, tsohle li ka sebelisoa, ha li na lithibelo life.
3, mekhoa ea ho qhaqha ea hydroxypropyl methyl cellulose (HPMC) e na le tsona?
– karabo: mokhoa oa ho qhala metsi a chesang: hobane HPMC ha e qhibilihe ka metsing a chesang, kahoo HPMC ea pele e ka qhalanngoa ka ho lekana ka metsing a chesang, ebe e qhibilihisoa kapele ha e pholile, mekhoa e 'meli e tloaelehileng e hlalosoa ka tsela e latelang:
1) Tlatsa setshelo ka metsi a chesang a lekaneng kamoo o hlokang mme o se futhumatse ho fihlela ho 70℃. Hydroxypropyl methyl cellulose e eketsoa butle-butle ka ho hlohlelletsa butle, mme HPMC e phaphamala hodima metsi, ebe butle-butle e etsa lerōle, le phodiswang ka ho hlohlelletsa.
2) Kenya 1/3 kapa 2/3 ea metsi a hlokahalang ka setshelong 'me u a futhumatse ho fihlela ho 70°C. Hasanya HPMC ho latela mokhoa oa 1) ho lokisa slurry ea metsi a chesang; Ebe u eketsa metsi a batang a setseng ho slurry ea metsi a chesang ebe u pholile motsoako ka mor'a ho hlohlelletsa.
Mokhoa oa ho kopanya phofo: Phofo ea HPMC le metsoako e mengata e mengata ea lintho tse nang le phofo, li kopantsoe ka botlalo le blender, ebe li eketsa metsi ho qhibiliha, ka nako ena HPMC e ka qhibiliha, 'me ea se ke ea kopana, hobane sekhutlo se seng le se seng se senyenyane, phofo e nyane feela ea HPMC, metsi a tla qhibiliha hang-hang. – Bahlahisi ba phofo ea putty le seretse ba sebelisa mokhoa ona. [Hydroxypropyl methyl cellulose (HPMC) e sebelisoa e le moemeli oa ho teteana le moemeli oa ho boloka metsi ka har'a seretse sa phofo ea putty.
4, mokhoa oa ho fumana boleng ba hydroxypropyl methyl cellulose (HPMC) e bonolo le e utloahalang joang?
Karabo: (1) bosweu: le hoja bosweu bo ke ke ba tseba hore na HPMC e ntle, mme haeba e eketsoa tshebetsong ya tlhahiso, whitener, e tla ama boleng ba yona. Leha ho le jwalo, dihlahiswa tse ngata tse ntle di na le bosweu bo botle. (2) botenya: HPMC fineness hangata ke letlooeng la 80 le letlooeng la 100, 120 sepheo se tlase, Hebei HPMC boholo ba letlooeng la 80, ha botenya bo le botenya, ka kakaretso, ho molemo. (3) phetisetso: hydroxypropyl methyl cellulose (HPMC) ka metsing, ho thehwa ha colloid e bonaletsang, bona phetisetso ya yona, phetisetso e kgolo e molemo, dintho tse sa qhibiliheng ka hare di fokola. Phetisetso ya reactor e otlolohileng ka kakaretso e ntle, mme ya reactor e otlolohileng e mpe le ho feta, empa ha ho bolele hore boleng ba tlhahiso ya reactor e otlolohileng bo betere ho feta ba reactor e otlolohileng. Ho na le mabaka a mangata a ho fumana boleng ba sehlahiswa. (4) Palo: ha karolo e le kgolo, boima bo betere bo betere. Ho feta moo, hobane ka hare ho hydroxyl propyl base dikahare di phahame ka tlwaelo, hydroxyl propyl base dikahare di phahame, ho sireletsa metsi ho batla ho betere.
5, ho teteana ha hydroxypropyl methyl cellulose (HPMC) ho loketse haholoanyane?
– karabo: ho teneha ka phofo ea ngoana ho lokile hangata ke 100, e 'ngoe e telele ho feta tlhoko ka seretse, e batla bokhoni ba ho e sebelisa ke 150,000. Ho feta moo, HPMC ke karolo ea bohlokoa ka ho fetisisa ea ho boloka metsi, e lateloa ke ho teteana. Phofong ea putty, ha feela ho boloka metsi ho le molemo, viscosity e tlase (7-80,000), hoa khoneha hape, ehlile, viscosity e kholo, ho boloka metsi ho molemo, ha viscosity e feta 100, viscosity ea ho boloka metsi ha e ngata.
6, hydroxypropyl methyl cellulose (HPMC) ke matšoao afe a mantlha a tekheniki?
Karabo: Bongata ba Hydroxypropyl le ho teteana, basebelisi ba bangata ba tsotella matšoao ana a mabeli. Bongata ba Hydroxypropyl bo phahame, ho boloka metsi ka kakaretso ho molemo. Ho teteana, ho boloka metsi, kamano (empa e seng ho feletseng) le hona ho molemo, 'me ho teteana, seretse sa samente ho molemo ho sebelisa tse ling.
7, hydroxypropyl methyl cellulose (HPMC) ke thepa efe e ka sehloohong e tala?
Karabo: hydroxypropyl methyl cellulose (HPMC) thepa e tala e ka sehloohong: k'hothone e hloekisitsoeng, chloromethane, propylene oxide, thepa e tala e meng, alkali ea matlapa, asiti, toluene, joala ba isopropyl le tse ling.
8, HPMC mabapi le tšebeliso ea phofo ea putty, karolo e ka sehloohong, hore na ho hlaha ha k'hemistri ke eng?
Karabo: HPMC ka har'a phofo ea putty, ho teteana, metsi le kaho ea likarolo tse tharo. Ho teteana: cellulose e ka teteana ho fihlela e emisoa, e le hore tharollo e lule e lekana holimo le tlase e le karolo ea ho fanyeha ho thibelang phallo. Ho boloka metsi: etsa hore phofo ea putty e ome butle, calcium e bohlooho e thusang ketsong ea karabelo ea metsi. Kaho: selulose ea cellulose, 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, empa e bapala karolo ea tšehetso feela. Phofo ea putty le metsi, leboteng, ke karabelo ea lik'hemik'hale, ka lebaka la tlhahiso ea lintho tse ncha, lebota la phofo ea putty le theoha leboteng, le sila ho ba phofo, ebe le sebelisoa, ha le molemo, hobane le entse ntho e ncha (calcium carbonate). Sebopeho se seholo sa phofo ea khalsiamo e putsoa ke motsoako oa Ca(OH)2,CaO le palo e nyane ea CaCO3,CaO+H2O=Ca(OH)2 — Ca(OH)2+CO2=CaCO3↓+H2O Khalsiamo e putsoa metsing le moeeng tlas'a ts'ebetso ea CO2, calcium carbonate, le metsi a HPMC feela, a thusa khalsiamo e putsoa ho ba le karabelo e betere, ea eona ha ea ka ea kenya letsoho karabelong efe kapa efe.
9.HPMC ether e seng ionic cellulose, joale e seng ionic ke eng?
K: Ka kakaretso, li-non-ion ke lintho tse sa ioning ka metsing. Ionization ke ho arohana ha electrolyte ho ba li-ion tse tjhajileng tse tsamaeang ka bolokolohi ka har'a solvent e itseng, joalo ka metsi kapa joala. Mohlala, letsoai leo re le jang letsatsi le letsatsi - sodium chloride (NaCl) e qhibiliha ka metsing 'me ea ioning ho hlahisa li-ion tsa sodium tse tsamaeang ka bolokolohi (Na+) ka charge e ntle le li-ion tsa chloride (Cl) ka charge e mpe. Ke hore, HPMC ka metsing ha e arohane le li-ion tse tjhajileng, empa e teng e le limolek'hule.
10. Ke eng e amanang le mocheso oa gel oa hydroxypropyl methyl cellulose?
– Karabo: Mocheso oa jeli oaHPMCe amana le dikahare tsa methoxyl, ha dikahare tsa methoxyl di le tlase ↓, mocheso wa gel o ba o phahameng.
11, phofo ea putty le HPMC ha ho na kamano?
Karabo: phofo ea putty e theohelang haholo-holo le boleng ba khalsiamo ea molora bo na le kamano e kholo haholo, 'me HPMC ha e na kamano e kholo haholo. Khalsiamo e tlase ea calcium e putsoa le karolo e sa lokelang ea CaO le Ca(OH)2 ka khalsiamong e putsoa li tla baka ho oa ha phofo. Haeba ho na le kamano e nyane le HPMC, joale ho bolokoa ha metsi a HPMC ho fokola, ho tla boela ho bake phofo.
12, hydroxypropyl methyl cellulose e qhibilihang ka metsing a batang le e qhibilihang ka ho chesang ts'ebetsong ea tlhahiso ea phapang ke efe?
– Karabo: Mofuta oa tharollo ea hang-hang ea metsi a batang a HPMC ke ka mor'a kalafo ea bokaholimo ba glyoxal, e kenngoa ka metsing a batang e hasanngoa kapele, empa ha e qhibilihe hantle, viscosity e ea phahama, ea qhibiliha. Mofuta o qhibilihang ka thermosol ha o so phekoloe bokaholimo ka glyoxal. Bongata ba glyoxal bo boholo, ho hasana ho potlakile, empa viscosity e lieha, bongata bo bonyenyane, ho fapana le hoo.
13, monko oa hydroxypropyl methyl cellulose (HPMC) ke joang?
– Karabo: HPMC e hlahisoang ka mokhoa oa ho qhibilihisa e entsoe ka toluene le isopropyl alcohol. Haeba ho hlatsoa ho se monate haholo, ho tla ba le tatso e setseng.
14, tšebeliso e fapaneng, mokhoa oa ho khetha hydroxypropyl methyl cellulose (HPMC) e nepahetseng?
– karabo: teneha ka ho sebelisa phofo ea bana: tlhoko e tlase, viscosity ke 100 000, ho lokile, ho bohlokoa ho sireletsa metsi hore a be haufi le ona. Tšebeliso ea seretse: litlhoko tse phahameng, litlhoko tse phahameng tsa viscosity, 150 000 hore e be betere. Tšebeliso ea sekhomaretsi: tlhoko ea lihlahisoa tsa hang-hang, viscosity e phahameng.
15. Lebitso le tsebahalang 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 ts'ebelisong ea phofo ea putty, putty phofo ea bubble ke eng?
Karabo: HPMC ka phofo ea putty, ho teteana, metsi le kaho ea likarolo tse tharo. Ha e kenelle karabelong efe kapa efe. Lisosa tsa lipululana: 1, metsi a mangata haholo. 2, karolo e ka tlase ha e ome, e ka holimo ho lera la ho hohla, hape e bonolo ho e blister.
17. Phapang ke efe pakeng tsa HPMC le MC?
– Karabo: MC ke methyl cellulose, e entsoeng ka cellulose ether ka letoto la dikarabelo tse nang le methane chloride e le moemedi ya etherifying ka mora hore k'hothone e hlwekisitsweng e phekolwe ka alkali. Ka kakaretso, tekanyo ya phetolo ke 1.6~2.0, mme ho qhibiliha ho fapana ho ya ka tekanyo ya phetolo. Ke ya nonionic cellulose ether.
(1) Ho boloka metsi ha methyl cellulose ho itshetlehile ka bongata ba yona ba ho eketsa, ho teteana, ho teteana ha dikarolwana le sekgahla sa ho qhalana. Ka kakaretso ho eketsa bongata bo boholo, ho teteana ho honyenyane, ho teteana, sekgahla sa ho teteana ha metsi se hodimo. Har'a tsona, bongata ba tlatsetso bo na le tshusumetso e kgolo hodima ho teteana ha metsi, mme ho teteana ha ho lekane le ho teteana ha metsi. Sekgahla sa ho qhaqha se itshetlehile haholo-holo ka tekanyo ya phetoho ya bokahodimo le ho teteana ha dikarolwana tsa cellulose. Ho di-ether tse mmalwa tsa cellulose tse ka hodimo, sekgahla sa ho teteana ha metsi sa methyl cellulose le hydroxypropyl methyl cellulose se hodimo.
(2) Methyl cellulose e qhibiliha metsing a batang, e leng ntho e 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 guanidine le li-surfactants tse ngata. Gelation e etsahala ha mocheso o fihla mochesong oa gelation.
(3) Phetoho ea mocheso e tla ama ka botebo sekhahla sa ho boloka metsi sa methyl cellulose. 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, e leng se amang ka botebo ho hahuoa ha seretse.
(4) Methyl cellulose e na le tshusumetso e totobetseng hodima ho hahuwa le ho kgomarela ha seretse. “Ho kgomarela” mona ho bolela kgomarela e utlwiwang ke mosebetsi pakeng tsa sesebediswa le substrate ya lebota, e leng ho hanyetsa ho kgomarela ha seretse. Kgomarela e kgolo, kganyetso ya ho kgomarela ha seretse e kgolo, matla a hlokahalang ke basebetsi nakong ya tshebediso le ona a maholo, mme kaho ya seretse e fokola. Dihlahisweng tsa ether tsa cellulose, kgomarela ya methyl cellulose e maemong a itekanetseng.
HPMC bakeng sa hydroxypropyl methyl cellulose, e hloekisoa ka k'hothone kamora kalafo ea alkali, 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 ho nkeloa sebaka ka kakaretso ke 1.2 ~ 2.0. Thepa ea eona e fapana ho latela karolo ea methoxy le hydroxypropyl.
(1) Hydroxypropyl methyl cellulose e qhibiliha habonolo metsing a batang, e leng ntho e thata ho e qhibilihisa metsing a chesang. Leha ho le jwalo, mocheso wa yona wa gelation metsing a chesang o phahame ho feta wa methyl cellulose. Ho qhibiliha ha methyl cellulose metsing a batang le hona ho ntlafetse haholo.
(2) Viscosity ea hydroxypropyl methyl cellulose e amana le boima ba eona ba limolek'hule, 'me ha boima ba limolek'hule bo le holimo, viscosity e ba holimo. Mocheso le oona o ama viscosity. Viscosity ea fokotseha ha mocheso o ntse o eketseha. Empa viscosity ea eona phello ea mocheso o phahameng e tlase ho feta ea methyl cellulose. Tharollo e tsitsitse ha e bolokoa mochesong oa kamore.
(3) Hydroxypropyl methyl cellulose e tsitsitse ho ea ho asiti le motheo, 'me tharollo ea eona ea metsi e tsitsitse haholo ho tloha 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. Hydroxypropyl methyl cellulose e tsitsitse ho ea 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 tekanyo le ho teteana ha yona, mme sekgahla sa ho boloka metsi sa hydroxypropyl methyl cellulose se hodimo ho feta sa methyl cellulose ka tekanyo e tshwanang.
(5) Hydroxypropyl methyl cellulose e ka kopanngoa le metsoako ea polymer e qhibilihang ka metsing hore e be tharollo e ts'oanang, e nang le viscosity e phahameng. Tse kang polyvinyl alcohol, starch ether, sekhomaretsi sa meroho 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 lienzyme ho feta methyl cellulose, 'me monyetla oa ho senyeha ha lienzyme ea tharollo ea eona o tlase ho feta oa methyl cellulose.
18. Ke eng e lokelang ho elwa hloko ts'ebelisong e sebetsang ea kamano pakeng tsa viscosity le mocheso oa HPMC?
Karabo: Ho teteana haHPMCe lekana ka tsela e fapaneng le mocheso, ke hore, viscosity e eketseha ha mocheso o fokotseha. Ha re bua ka viscosity ea sehlahisoa, re bua ka viscosity ea 2% ea sehlahisoa metsing ka likhato tse 20 tsa Celsius.
Ha ho sebelisoa ka mokhoa o sebetsang, libakeng tse nang le phapang e kholo ea mocheso pakeng tsa lehlabula le mariha, ho lokela ho hlokomeloa hore ho khothaletsoa 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 ha e hohla, maikutlo a tla ba boima.
Vithesis e mahareng: 75000-100000 e sebediswa haholo bakeng sa putty.
Lebaka: Ho boloka metsi hantle.
Viscosity e phahameng:150000-200000 e sebelisoa haholo-holo bakeng sa phofo ea rabara ea polystyrene e sireletsang li-particle seretse le seretse sa vitrified beads insulation seretse.
Lebaka: ho teteana ho hoholo, seretse ha se bonolo ho se theola, phallo ea metsi e leketlile, e ntlafatsa kaho.
Empa ka kakaretso, ha viscosity e phahame, ho boloka metsi ho ba betere, kahoo lifeme tse ngata tsa seretse se omileng, ha ho nahanoa ka litšenyehelo, li sebelisa cellulose e nang le viscosity e mahareng (75000-100000) ho nkela cellulose e nang le viscosity e mahareng le e tlase (20000-40000) sebaka ho fokotsa bongata ba tlatsetso.
Nako ea poso: Mmesa-26-2024