1, tšebeliso ea mantlha ea hydroxypropyl methyl cellulose (HPMC) ke efe?
HPMCe sebelisoa haholo linthong tsa ho haha, lijalo, li-resin tsa maiketsetso, li-ceramics, meriana, lijo, masela, temo, litlolo, koae le liindasteri tse ling. HPMC e ka aroloa ka: kereiti ea kaho, kereiti ea lijo le kereiti ea 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, e setseng e sebelisetsoa ho etsa seretse sa samente le sekhomaretsi.
2, hydroxypropyl methyl cellulose (HPMC) e arotsoe ka tse 'maloa, phapang ke efe ts'ebelisong ea eona?
HPMC e ka aroloa ka mofuta oa tharollo ea hang-hang le mofuta oa tharollo e chesang, lihlahisoa tsa mofuta oa tharollo hang-hang, tse qhalakantsoeng ka metsing a batang, li nyamela ka metsing, ka nako ena mokelikeli ha o na viscosity, hobane HPMC e qhalakantsoeng ka metsing, ha ho na ho qhalana ha sebele. Hoo e ka bang metsotso e 2, viscosity ea mokelikeli e ntse e eketseha butle-butle, e etsa "viscous colloid" e hlakileng. Lihlahisoa tse chesang tse qhibilihang, metsing a batang, li ka qhalakanngoa ka potlako metsing a chesang, li nyamela metsing a chesang, ha mocheso o theohela mocheso o itseng, butle-butle ho hlaha viscosity, ho fihlela ho thehoa ha colloid e hlakileng ea 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 keng ea sebelisoa. MOHLALA OA THAROLLO EA Hang-hang, MAFOKO OA KOPO A MAKATSANE, KA HO KHAUTSOA KE PORO LE SERETE SA NGANA, LE KA SEKHOMISI SA MOLELEKI LE HO ABETSWA, KAOFELA BA KA SEBEDISA, KA NTLE HO CONTRAINDICATION.
3, mekhoa ea ho qhibiliha ea hydroxypropyl methyl cellulose (HPMC) e na le tsona?
Mokhoa oa ho qhibiliha ha metsi a chesang: Hobane HPMC ha e qhibilihe metsing a chesang, kahoo HPMC ea pele e ka qhalakanngoa ka ho lekana metsing a chesang, ebe e qhibiliha kapele ha e pholile, mekhoa e 'meli e tloaelehileng e hlalosoa ka tsela e latelang:
1) Kenya palo e hlokahalang ea metsi a chesang ka har'a sets'oants'o ebe u e futhumatsa ho isa ho 70 ℃. Butle-butle eketsa hydroxypropyl methylcellulose tlas'a ho sisinyeha butle-butle, HPMC e ile ea qala ho phaphamala holim'a metsi, 'me butle-butle e etsa slurry, tlas'a ho sisinyeha ho pholile ha slurry.
2), eketsa palo e hlokahalang ea 1/3 kapa 2/3 metsi ka setshelo, le mocheso ho 70 ℃, ho ea ka mokhoa oa 1), ho hasana ha HPMC, ho lokisetsa metsi a chesang a slurry; Ebe u eketsa palo e setseng ea metsi a batang ho slurry e chesang, tsosa le ho pholile motsoako.
Mokhoa oa ho kopanya phofo: HPMC phofo le palo e kholo ea lisebelisoa tse ling tsa phofo, e kopantsoeng ka ho feletseng le blender, ka mor'a ho eketsa metsi ho qhibiliha, ebe HPMC e ka qhibiliha ka nako ena, empa e se momahano, hobane sekhutlo se seng le se seng se senyenyane, ke phofo e nyenyane feela ea HPMC. , metsi a tla qhibiliha hang-hang. - Likhoebo tsa tlhahiso ea phofo le seretse li sebelisa mokhoa ona. Hydroxypropyl methyl cellulose (HPMC) e sebelisoa e le ntho e tenya le e bolokang metsi seretseng sa putty powder.
4, ho bonolo ebile ho bonolo hakae ho tseba boleng ba hydroxypropyl methyl cellulose (HPMC)?
(1) bosoeu: le hoja bosoeu bo ke ke ba tseba hore na HPMC e bonolo ho e sebelisa, 'me haeba e eketsoa ts'ebetsong ea tlhahiso ea moemeli oa whitening, e tla ama boleng ba eona. Leha ho le joalo, lihlahisoa tse ntle hangata li tšoeu.
(2) fineness: HPMC fineness ka kakaretso 80 letlooeng le 100 letlooeng, 120 tlase morero, Hebei HPMC hangata 80 letlooeng, fineness fineness, ka kakaretso molemo ho feta.
(3) phetisetso: hydroxypropyl methyl cellulose (HPMC) ka metsing, sebopeho sa colloid e bonaletsang, bona phetiso ea eona, phetiso e kholoanyane, e betere, e fokotsehile haholo ka hare. The permeability ea sekontiri se otlolohileng ka kakaretso se setle, sekontiri se rapameng se mpe le ho feta, empa se ke ke sa bontša hore boleng ba tlhahiso ea sekontiri se otlolohileng se molemo ho feta sa tlhahiso ea sekontiri se otlolohileng, boleng ba sehlahisoa bo khethoa ke lintlha tse ngata.
(4) matla a khoheli: ha khoheli e itseng e le kholoanyane, boima bo ba betere. Ho feta ho 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 palo ea phofo ea putty?
HPMC ka kopo ea sebele ea litekanyetso li behoa, ke tikoloho ea tlelaemete, mocheso, selehae k'halsiamo molora boleng, putty phofo foromo le "litlhoko tsa bareki ba boleng", 'me ba le fapaneng. Ka kakaretso, pakeng tsa lik'hilograma tse 'nè le tse hlano. Ka mohlala: Beijing putty phofo, boholo ba beha 5 lik'hilograma; Guizhou, boholo ba bona ke lik'hilograma tse 5 lehlabula le 4.5 lik'hilograma mariha. Bongata ba Yunnan bo nyane, ka kakaretso ke 3 kg -4 kg joalo-joalo.
6, hydroxypropyl methyl cellulose (HPMC) ke viscosity e kae e loketseng?
KHALETSOA KE POUDA EA NGANA KE KAKARETSO LIKETE 100 HO LOKILE, TLHOKOMELO MORTAR E BOLELE HO FIHLELA, U BATLA HO SEBELISA LIKETE tse 150. Ho feta moo, karolo ea bohlokoa ka ho fetisisa ea HPMC ke ho boloka metsi, ho lateloa ke ho teteaneng. Ka phofo ea putty, hafeela ho boloka metsi ho le molemo, viscosity e tlaase (7-80 000), hape hoa khoneha, ha e le hantle, viscosity e kholoanyane, ho boloka metsi a lekanyelitsoeng ho molemo, ha viscosity e feta. 100 sekete, viscosity ha e na phello e fokolang ho boloka metsi.
7, hydroxypropyl methyl cellulose (HPMC) matšoao a mantlha a tekheniki ke afe?
Likahare tsa Hydroxypropyl le viscosity, basebelisi ba bangata ba amehile ka li-index tsena tse peli. Likahare tsa Hydroxypropyl li phahame, ho boloka metsi ho molemo ka kakaretso. Viscosity, ho boloka metsi, mong ka (empa eseng ka ho feletseng) e boetse e molemo, le viscosity, ka seretse sa samente molemo sebelisa ba bang.
8, hydroxypropyl methyl cellulose (HPMC) lisebelisoa tse ka sehloohong tse tala ke eng?
Hydroxypropyl methyl cellulose (HPMC) lisebelisoa tsa mantlha tse tala: k'hothone e hloekisitsoeng, chloromethane, propylene oxide, lisebelisoa tse ling tse tala, matlapa a alkali, acid, toluene, joala ba isopropyl joalo-joalo.
9, HPMC ha ho sebelisoa putty powder, karolo e ka sehloohong ke efe, ebang ke k'hemistri?
HPMC ka putty powder, thickening, ho boloka metsi le kaho ea likarolo tse tharo. Thickening: Cellulose e ka teteaneng ho bapala ho fanyeha, e le hore tharollo ea ho boloka junifomo holimo le tlase e le karolo e ts'oanang, anti phallo e fanyehiloe. Ho boloka metsi: etsa hore phofo ea putty e ome butle butle, karabelo ea molora e thusang tlas'a ts'ebetso ea metsi. Kaho: Cellulose e na le phello e tlotsang, e ka etsa hore putty powder e be le kaho e ntle. HPMC ha e kenye letsoho liketsong leha e le life tsa lik'hemik'hale, e bapala karolo ea thuso feela. Putty phofo e phaella ka metsi, leboteng, ke karabelo ea lik'hemik'hale, hobane ho na le moloko oa lintho tse ncha, putty phofo leboteng ho tloha leboteng, fatše ka phofo, ebe e sebelisoa, ha e sa le joalo, hobane e thehile thepa e ncha (calcium carbonate). Likarolo tse ka sehloohong tsa phofo ea grey calcium ke: Ca(OH)2, CaO le palo e nyenyane ea CaCO3 motsoako, CaO+H2O=Ca(OH)2 - Ca(OH)2+CO2=CaCO3↓+H2O calcium molora metsing. le moea tlas'a khato ea CO2, ho thehoa ha k'halsiamo carbonate, 'me HPMC feela ho boloka metsi, thusa k'halsiamo molora molemo karabelo, ea eona ha aa ka a kopanela karabelo efe kapa efe.
10, HPMC non-ionic cellulose ether, joale seo e seng ionic ke eng?
Ka kakaretso, nonionic ke ntho e sa keneng metsing. Ionization ke mokhoa oo electrolyte e arohanang ka eona hore e be li-ion tse tsamaeang ka bolokolohi ka har'a motsoako o itseng, joalo ka metsi kapa joala. Ka mohlala, sodium chloride (NaCl), letsoai leo re le jang letsatsi le leng le le leng, le qhibiliha ka metsing 'me le ionize ho hlahisa li-ion tsa sodium (Na +) tse sa lefelloeng hantle le li-ion tsa chloride (Cl) tse qosoang hampe. Ka mantsoe a mang, HPMC ka metsing ha e ikarole ho li-ion tse qosoang, empa e teng joalo ka limolek'hule.
11, mocheso oa gel ea hydroxypropyl methylcellulose mme o amana le eng?
Thempereichara ea gel ea HPMC e amana le litaba tsa eona tsa methoxy, ho theosa le methoxy content ↓, ho phahamisa mocheso oa gel ↑.
12. Na ho na le kamano pakeng tsa putty powder le HPMC?
Putty phofo ea phofo le boleng ba khalsiamo e na le kamano e kholo, 'me HPMC ha e na kamano e ngata haholo. Khalsiamo e tlase ea khalsiamo le karolo ea CaO, Ca(OH)2 moloreng oa khalsiamo ha ea lokela, e tla baka lerotholi. Haeba e na le ho hong ho amanang le HPMC, joale ho boloka metsi a HPMC ho futsanehile, ho tla boela ho baka lerotholi la phofo. Bakeng sa mabaka a tobileng, ka kopo sheba potso ea 9.
13, hydroxypropyl methylcellulose mofuta oa metsi a batang a qhibilihang le mofuta o chesang o qhibilihang ts'ebetsong ea tlhahiso, phapang ke efe?
Mofuta o qhibilihang oa metsi a batang a HPMC ke kamora kalafo ea glyoxal, ka metsing a batang a qhalakantsoeng ka potlako, empa ha a hlile a qhibiliha, viscosity e nyoloha, ea qhibiliha. Mofuta o qhibilihang mocheso o ne o sa phekoloe ka glyoxal. Molumo oa glyoxal o moholo, ho hasana ho potlakile, empa viscosity e lieha, molumo o monyenyane, ho fapana le hoo.
14, hydroxypropyl methyl cellulose (HPMC) e na le monko oa se etsahalang?
HPMC e hlahisoang ka mokhoa oa solvent e entsoe ka toluene le joala ba isopropyl joalo ka mokelikeli. Haeba ho hlatsoa ha ho molemo haholo, ho tla ba le tatso e setseng.
15, litšebeliso tse fapaneng, mokhoa oa ho khetha hydroxypropyl methyl cellulose (HPMC) e nepahetseng?
TLHOKOMELISO EA phofo ea putty: tlhokahalo e tlase, viscosity ke likete tse 100, ho lokile, ntho ea bohlokoa ke ho boloka metsi a le betere. Kopo ea seretse: tlhokahalo e phahame, tlhokahalo ke viscosity e phahameng, tse likete tse 150 li lokela ho ba molemo. Tšebeliso ea sekhomaretsi: hloka lihlahisoa tsa hang-hang, viscosity e phahameng.
16, hydroxypropyl methylcellulose ke lebitso lefe?
Hydroxypropyl Methyl Cellulose, Senyesemane: Hydroxypropyl Methyl Cellulose khutsufatso: HPMC kapa MHPC alias: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose hydroxypropyl Methyl ether Hypromellose, 2-hydroxypropylmethyl Cellulose ether. Cellulose hydroxypropyl Methyl ether Hyprolose.
17, HPMC ha ho sebelisoa putty powder, putty powder bubble lebaka lefe?
HPMC ka putty powder, thickening, ho boloka metsi le kaho ea likarolo tse tharo. Ho se kopanele maikutlong afe kapa afe. Lebaka la li-bubble: 1, metsi a behile haholo. 2, tlase ha e omme, ka holimo le ho phunya lera, hape ho bonolo ho bubble.
18. Foromo ea phofo ea putty bakeng sa marako a ka hare le a ka ntle?
Putty phofo bakeng sa lebota le ka hare: 800KG ea k'halsiamo e boima le 150KG ea grey calcium (starch ether, e tala e hloekileng, mobu oa peng, citric acid le polyacrylamide li ka eketsoa ka mokhoa o nepahetseng)
Ka ntle lebota putty phofo: samente 350KG boima k'halsiamo 500KG quartz lehlabathe 150KG latex phofo 8-12kg selulose ether 3KG starch ether 0.5kg lehong fiber 2KG
19. Phapano ke efe lipakeng tsa HPMC le MC?
MC ke methyl cellulose, k'hothone e hloekisitsoeng ka mor'a phekolo ea alkali, ka methane chloride e le etherification agent, ka letoto la liketso ho etsa cellulose ether. Ka kakaretso, tekanyo ea ho fetola ke 1.6 ~ 2.0, 'me ho qhibiliha ho fapana ho ea ka tekanyo ea ho kenya sebaka. Ke ether e seng ea ionic cellulose.
(1) Ho boloka metsi a methyl cellulose ho ipapisitse le palo ea eona ea tlatsetso, viscosity, botle ba likaroloana le lebelo la ho qhibiliha. Ka kakaretso eketsa palo e kholo, fineness e nyane, viscosity, sekhahla se phahameng sa ho boloka metsi. Har'a bona, palo ea ho eketsoa ho tekanyo ea ho boloka metsi e na le tšusumetso e kholo ka ho fetisisa, viscosity le boemo ba ho boloka metsi ha bo lekane le kamano. Sekhahla sa ho qhibiliha se itšetlehile haholo ka tekanyo ea phetoho ea holim'a metsi le boleng ba likaroloana tsa likaroloana tsa cellulose. Ho cellulose ether e ka holimo, methyl cellulose le hydroxypropyl methyl cellulose sekhahla sa ho boloka metsi se phahame.
(2) Methyl cellulose e ka qhibiliha ka metsing a batang, metsi a chesang a qhibilihisitsoeng a tla kopana le mathata, tharollo ea eona ea metsi ka pH = 3 ~ 12 e tsitsitse haholo. E lumellana hantle le starch, guanidine gum le li-surfactants tse ngata. Gelation e etsahala ha mocheso o fihla mocheso oa gelation.
(3) Phetoho ea mocheso e tla ama ka botebo sekhahla sa ho boloka metsi sa methyl cellulose. Ka kakaretso, ha thempereichara e phahame, ho mpefala ha metsi ho boloka metsi. Haeba mocheso oa seretse o feta 40 ℃, ho bolokoa ha metsi a methyl cellulose ho tla mpefala haholo, ho tla ama kaho ea seretse haholo.
(4) Methyl cellulose e na le tšusumetso e totobetseng mohahong le ho khomarela seretse. Mona, "ho khomarela" ho bolela matla a sekhomaretsi a utloahalang pakeng tsa sesebelisoa sa kopo sa mosebeletsi le substrate ea lerako, ke hore, ho hanyetsa ho kuta ha seretse. Thepa ea sekhomaretsi e kholo, khanyetso ea ho kuta ea seretse e kholo, 'me matla a hlokoang ke basebetsi ha a ntse a sebelisoa le ona a maholo, kahoo thepa ea kaho ea seretse e futsanehile. Ka lihlahisoa tsa cellulose ether, sekhomaretsi sa methyl cellulose se maemong a mahareng.
HPMC bakeng sa hydroxypropyl methyl cellulose, e entsoe ka k'hothone e hloekisitsoeng ka mor'a phekolo ea alkalization, e nang le propylene oxide le chloromethane e le etherifying agent, ka letoto la liketso le ho etsoa ka selulose e seng ea ionic e kopantsoeng le ether. The substitution degree hangata ke 1.2 ~ 2.0. Thepa ea eona e angoa ke karolo ea methoxy content le hydroxypropyl content.
(1) hydroxypropyl methyl cellulose e qhibilihang ka metsing a batang, metsi a chesang a qhibilihisitsoeng a tla kopana le mathata. Empa mocheso oa eona oa gelation metsing a chesang o phahame haholo ho feta oa methyl cellulose. Ho qhibiliha ha methyl cellulose metsing a batang le hona ho ntlafalitsoe haholo.
(2) viscosity ea hydroxypropyl methyl cellulose e amana le boima ba eona ba molek'hule, 'me boima bo boholo ba limolek'hule ke viscosity e phahameng. Mocheso o tla boela o ama viscosity ea eona, mocheso o eketseha, viscosity e fokotseha. Leha ho le joalo, viscosity ea mocheso o phahameng o tlase ho feta oa methyl cellulose. Tharollo e tsitsitse ha e bolokiloe mocheso oa kamore.
(3) hydroxypropyl methyl cellulose e tsitsitse ho acid le alkali, 'me tharollo ea eona ea metsi e tsitsitse haholo ka har'a pH = 2 ~ 12. Caustic soda le metsi a lime ha a na phello e kholo ho thepa ea eona, empa alkaline e ka potlakisa sekhahla sa ho qhibiliha le ho ntlafatsa viscosity ea pin. Hydroxypropyl methyl cellulose e na le botsitso ho matsoai a akaretsang, empa ha motsoako oa motsoako oa letsoai o phahame, viscosity ea hydroxypropyl methyl cellulose tharollo e atisa ho eketseha.
(4) Ho boloka metsi a hydroxypropyl methyl cellulose ho itšetlehile ka palo ea eona e ekelitsoeng, viscosity, joalo-joalo, tekanyo e lekanang ea ho boloka metsi e phahame ho feta methyl cellulose.
(5) hydroxypropyl methyl cellulose e ka tsoakoa le metsoako ea polymer e qhibilihang ka metsi hore e be motsoako, tharollo e phahameng ea viscosity. Tse kang joala ba polyvinyl, starch ether, semela sa gum joalo-joalo.
(6) Ho khomarela ha hydroxypropyl methyl cellulose mohahong oa seretse ho phahame ho feta methyl cellulose.
(7) hydroxypropyl methyl cellulose e na le khanyetso e ntle ea enzymatic ho feta methyl cellulose, mme monyetla oa ho senyeha ha enzymatic ea tharollo ea eona o tlase ho feta oa methyl cellulose.
Ke eng e lokelang ho lebisoa tlhokomelo ho ts'ebeliso e sebetsang ea kamano pakeng tsa viscosity le mocheso oa HPMC?
The viscosity ea HPMC e inversely tekano le mocheso, ke ho re, viscosity eketseha ka ho fokotseha ha mocheso. Ha re bua ka viscosity ea sehlahisoa, re bolela sephetho sa ho lekanya tharollo ea 2% ea metsi ka mocheso oa likhato tse 20 tsa Celsius.
Ka ts'ebeliso 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 batlang e le tlase nakong ea mariha, e leng se loketseng ho haha. Ho seng joalo, ha mocheso o le tlase, viscosity ea cellulose e tla eketseha, ha ho phunya, ho ikutloa ho tla ba boima.
Viscosity e bohareng : 75000-100000 haholo-holo e sebelisetsoang putty
Lebaka: ho boloka metsi hantle
Viscosity e phahameng :150000-200000 e sebelisoa haholo-holo bakeng sa likaroloana tsa polystyrene tse futhumatsang mocheso oa seretse sa phofo le lifaha tsa khalase seretse se futhumatsang.
Lebaka: viscosity e phahameng, seretse ha se bonolo ho theoha, ho phalla ho leketlile, ho ntlafatsa mohaho.
Empa ha re bua ka kakaretso, ha viscosity e phahame, ho tla ba molemo ho boloka metsi, kahoo lifeme tse ngata tse omeletseng tsa seretse li nahana ka litšenyehelo, tse nang le cellulose e bohareng ea viscosity (75,000-100000) ho nka sebaka sa cellulose e tlaase ea viscosity (20,000-40000) ho fokotsa palo ea selulose. tlatsetso.
Nako ea poso: Sep-14-2022