1, tšebeliso e ka sehloohong ea hydroxypropyl methyl cellulose (HPMC) ke efe?
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 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 mefuta ea tharollo ea hang-hang le mefuta ea tharollo e chesang, lihlahisoa tsa mofuta oa tharollo ea hang-hang, tse hasanngoang kapele metsing a batang, li nyamela ka metsing, ka nako ena mokelikeli ha o na viscosity, hobane HPMC e hasanngoa 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 hasoa 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 BAKAE LE BA BANG, 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?
Mokhoa oa ho qhala ka metsi a chesang: Kaha HPMC ha e qhalakanywe ka metsing a chesang, kahoo HPMC ea pele e ka qhalakanngoa ka ho lekana ka metsing a chesang, ebe e qhalakanngoa 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℃. 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 ya metsi ka setshelong, mme o futhumatse ho fihlela ho 70℃, ho ya ka mokgwa wa 1), ho hasana ha HPMC, ho lokisa slurry ya metsi a chesang; Ebe o eketsa bongata bo setseng ba metsi a batang ho slurry e chesang, o hlohlelletse mme o phodise motsoako.
Mokhoa oa ho kopanya phofo: Phofo ea HPMC le metsoako e meng e mengata ea phofo, e kopantsoe hantle le blender, kamora ho eketsa metsi ho qhibiliha, ebe HPMC e ka qhibiliha 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 ea putty le seretse li 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, ho bonolo hakae le ho utloahala habonolo ho fumana boleng ba hydroxypropyl methyl cellulose (HPMC)?
(1) bosweu: le hoja bosweu bo ke ke ba tseba hore na HPMC e bonolo ho e sebedisa, mme haeba e eketswa tshebetsong ya tlhahiso ya sehlahiswa sa ho sweufatsa, e tla ama boleng ba yona. Leha ho le jwalo, dihlahiswa tse ntle boholo ba tsona ke tse tshweu.
(2) botenya: Botenya ba HPMC ka kakaretso ke letlooeng la 80 le letlooeng la 100, morero o fokotsehile ka 120, Hebei HPMC boholo ba letlooeng la 80, ha botenya bo le botenya, ka kakaretso bo molemo.
(3) phetiso: hydroxypropyl methyl cellulose (HPMC) ka metsing, ho thehoa ha colloid e bonaletsang, bona phetiso ea eona, phetiso e kholo, e molemo, thepa e sa qhibiliheng haholo ka hare. Ho kenella ha reactor e otlolohileng ka kakaretso ho molemo, reactor e otlolohileng e mpe haholo, empa e ke ke ea bontša hore boleng ba tlhahiso ea reactor e otlolohileng bo betere ho feta ba tlhahiso ea reactor e otlolohileng, 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 molemo. Ho feta bohlokoa, ka kakaretso hobane litaba tsa hydroxypropyl li phahame, litaba tsa hydroxypropyl li phahame, joale ho boloka metsi ho molemo.
5, hydroxypropyl methyl cellulose (HPMC) ka bongata ba phofo ea putty?
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 li fapane. Ka kakaretso, pakeng tsa lik'hilograma tse 'ne le tse hlano. Mohlala: Phofo ea putty ea Beijing, boholo ba eona e beha lik'hilograma tse 5; Guizhou, boholo ba tsona ke lik'hilograma tse 5 hlabula le lik'hilograma tse 4.5 mariha. Bongata ba Yunnan bo bonyenyane, ka kakaretso ke lik'hilograma tse 3 -4 kg le tse ling.
6, hydroxypropyl methyl cellulose (HPMC) ke bokae ba viscosity bo loketseng?
Ho teneha ke PHOFU EA NGOANA KE KABOKAMOSO 100 SEKETE HO lokile, TLHOKO EA SEMORTAR E TELELE HAHOLO, BATLA HO SEBELISA 150 SEKETE. Ho feta moo, karolo ea bohlokoa ka ho fetisisa ea HPMC ke ho boloka metsi, e lateloa ke ho teteana. Phofong ea putty, ha feela ho boloka metsi ho le molemo, viscosity e tlase (7-80 sekete), hoa khoneha hape, ehlile, viscosity e kholoanyane, ho boloka metsi ho molemo, ha viscosity e feta 100 sekete, viscosity ha e na phello e kholo ho ho boloka metsi.
7, hydroxypropyl methyl cellulose (HPMC) ke matšoao afe a mantlha a botekgeniki?
Bongata ba basebelisi ba amehile ka ditekanyo tsena tse pedi tsa hydroxypropyl le viscosity. Bongata ba hydroxypropyl bo hodimo, ho boloka metsi ka kakaretso ho betere. Viscosity, ho boloka metsi, kamano (empa e seng e feletseng) le yona e betere, le viscosity, ka hara seretse sa samente ho molemo ho sebedisa tse ding.
8, hydroxypropyl methyl cellulose (HPMC) thepa e tala ea mantlha ke eng?
Hydroxypropyl methyl cellulose (HPMC) ke thepa e ka sehloohong e tala: k'hothone e hloekisitsoeng, chloromethane, propylene oxide, thepa e meng e tala, matlapa a alkali, asiti, toluene, isopropyl alcohol le tse ling.
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?
Ka kakaretso, nonionic ke ntho e sa ioning ka metsing. Ionization ke mokhoa oo ka oona electrolyte e aroloang ho ba li-ion tse tjhajwang tse tsamayang 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 ionis ho hlahisa li-ion tsa sodium tse tsamaeang ka bolokolohi (Na+) tse tjhajwang ka nepo le li-ion tsa chloride (Cl) tse tjhajwang hampe. Ka mantsoe a mang, HPMC ka metsing ha e arohane le li-ion tse tjhajwang, empa e teng e le limolek'hule.
11, mocheso oa gel ea hydroxypropyl methylcellulose le hore na e amana le eng?
Mocheso oa jeli ea HPMC o amana le litaba tsa eona tsa methoxy, ha litaba tsa methoxy li le tlase ↓, mocheso oa jeli o phahame ↑.
12. Na ho na le kamano efe kapa efe pakeng tsa phofo ea putty le HPMC?
Phofo ea phofo ea putty le boleng ba calcium li na le kamano e ntle haholo, '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 bona 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 hasanngoa ka potlako metsing a batang, empa ha oa qhibiliha hantle, viscosity ea phahama, ea 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?
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?
TŠEBELISO EA phofo ea putty: tlhoko e tlase, viscosity ke 100 000, ho lokile, ntho ea bohlokoa ke ho boloka metsi a le betere. Tšebeliso ea seretse: tlhoko e phahame, tlhoko ke viscosity e phahameng, 150 000 e lokela ho ba betere. Tšebeliso ea sekhomaretsi: hloka lihlahisoa tsa hang-hang, viscosity e phahameng.
16, hydroxypropyl methylcellulose lebitso le leng ke lefe?
Hydroxypropyl Methyl Cellulose, Senyesemane: Kakaretso ea Hydroxypropyl Methyl Cellulose: HPMC kapa lebitso le leng la MHPC: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose hydroxypropyl Methyl ether Hypromellose, 2-hydroxypropylmethyl 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?
Phofo ea putty bakeng sa lebota le ka hare: 800KG ea calcium e boima le 150KG ea calcium e putsoa (starch ether, botala bo hloekileng, mobu oa peng, citric acid le polyacrylamide 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, k'hothone e hloekisitsoeng ka mor'a kalafo ea alkali, ka methane chloride e le moemeli oa etherification, ka letoto la liketso ho etsa cellulose ether. 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 khomareleng ha seretse. Mona, "ho khomarela" ho bolela matla a khomareleng a utlwahalang pakeng tsa sesebelisoa sa ts'ebeliso sa mosebetsi le substrate ea lebota, ke hore, ho hanyetsa ho kuta ha seretse. Thepa ea sekhomaretsi e kholo, ho hanyetsa ho kuta ha seretse ho hoholo, 'me matla a hlokoang ke basebetsi ts'ebetsong ea ts'ebeliso le ona a maholo, kahoo thepa ea kaho ea seretse e fokola. Lihlahisoa tsa ether tsa cellulose, ho khomarela ha methyl cellulose ho boemong bo 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.
Ke eng e lokelang ho elwa hloko ts'ebelisong e sebetsang ea kamano pakeng tsa viscosity le mocheso oa HPMC?
Viscosity ea HPMC e lekana le mocheso ka tsela e fapaneng, ke hore, viscosity ea eketseha ha mocheso o fokotseha. Ha re bua ka viscosity ea sehlahisoa, re bolela sephetho sa ho lekanya tharollo ea sona ea metsi ea 2% mochesong oa 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, tlhokomelo e lokela ho lefshoa ho khothalletso ea 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, ha ho hohloa, ho ikutloa ho tla ba boima.
Viscosity e mahareng: 75000-100000 e sebelisoa haholo bakeng sa putty
Lebaka: ho boloka metsi hantle
Viscosity e phahameng:150000-200000 e sebelisoa haholo-holo bakeng sa likaroloana tsa polystyrene tse sireletsang mocheso, phofo ea seretse le lifaha tsa khalase tse sireletsang mocheso.
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 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: Loetse 14-2022