1, tšebeliso ea mantlha ea hydroxypropyl methyl cellulose (HPMC) 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: 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 ka aroloa ka hang-hang le chesang mofuta tharollo, dihlahiswa hang-hang, ka metsi a batang ka potlako qhalakantsoeng, nyamela ka metsing, ka nako ena mokelikeli ha a na viscosity, hobane HPMC e mpa e qhalakantsoeng ka metsing, ha ho na ho qhibiliha 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?
- A: 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 ka potlako ha ho pholile, mekhoa e 'meli e tloaelehileng e hlalosoa ka tsela e latelang: metsi a chesang a hlokahalang, 'me a futhumetse hoo e ka bang 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 JOALOKAHA 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)?
- Karabo: (1) bosoeu: le hoja bosoeu bo ke ke ba tseba hore na HPMC e molemo 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?
- Karabo: HPMC ts'ebelisong ea 'nete ea litekanyetso, ka tikoloho ea boemo ba leholimo, mocheso, boleng ba molora oa khalsiamo ea lehae, foromo ea phofo ea putty le "litlhoko tsa bareki ba boleng", 'me ho na le tse fapaneng. Ka kakaretso, tekanyo ea metsi e hanyetsanang le putty ka 4 kg - 5 kg pakeng tsa. 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. 'Me tekanyo ea HPMC ho 821 putty hangata e ka 2 ~ 3 kg.
6, hydroxypropyl methyl cellulose (HPMC) ke viscosity e kae e loketseng?
– Karabo: borehile LE NGWANA POWDER KAKARETSO 100 Sekete OK, THE TLHOKOMELISO IN seretse KE BA BANG MELELE, BATLA 150 Sekete Bokhoni HO SEBELISA. 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?
A: Likahare tsa Hydroxypropyl le viscosity, e leng seo basebelisi ba bangata ba amehileng ka sona. 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?
- Karabo: hydroxypropyl methyl cellulose (HPMC) ea lisebelisoa tse ka sehloohong tse tala: k'hothone e hloekisitsoeng, chloromethane, propylene oxide, lisebelisoa tse ling tse tala li na le, letlapa la alkali, acid, toluene, joala ea 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 phetha 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 lintho tse 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?
A: Ka kakaretso, nonionic ke ntho e ka metsing e sa ionize. 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?
- Karabo: Mocheso oa mocheso oa gel oa HPMC o amana le litaba tsa eona tsa methoxy. Ha methoxy e le tlase, mocheso oa gel o phahame.
12. Na ho na le kamano pakeng tsa putty powder le HPMC?
- Karabo: phofo ea putty le boleng ba khalsiamo bo 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?
- A : Mofuta o qhibilihang oa metsi a batang a HPMC ke kamora kalafo ea glyoxal, e kentsoeng ka metsing a batang e qhalakantsoeng ka potlako, empa ha e hlile e sa qhibilihe, viscosity holimo, 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?
- Karabo: HPMC e hlahisoang ka mokhoa oa solvent e entsoe ka toluene le joala ea isopropyl e le solvent. Haeba ho hlatsoa ho se ntle haholo, ho tla ba le tatso e setseng.
15, litšebeliso tse fapaneng, mokhoa oa ho khetha hydroxypropyl methyl cellulose (HPMC) e nepahetseng?
- Karabo: Tšebeliso ea phofo ea putty: tlhokahalo e tlaase, viscosity ke 100 tse likete, 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?
A: Hydroxypropyl Methyl Cellulose, Senyesemane: Hydroxypropyl Methyl Cellulose khutsufatso: HPMC kapa MHPC alias: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose Hypromellose, 2-hydroxypropyl methyl 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?
- Karabo: phofo ea putty e sa keneleng metsi bakeng sa lerako le ka hare: 750 ~ 850KG ea k'halsiamo e boima, 150 ~ 250KG ea grey calcium, 4 ~ 5KG ea cellulose ether, le 1 ~ 2KG ea phofo ea joala ea polyvinyl e ka eketsoa ka mokhoa o loketseng; Ka ntle lebota putty phofo: tšoeu samente 350KG, boima k'halsiamo 500-550kg, grey calcium 100-150kg, latex phofo 8-12kg, cellulose ether 5KG, lehong fiber 3KG.
19. Phapano ke efe lipakeng tsa HPMC le MC?
- MC bakeng sa methyl cellulose, ke k'hothone e hloekisitsoeng ka mor'a phekolo ea alkali, e nang le methane chloride e le etherification agent, ka letoto la liketso le 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 metsing hore e be motsoako o tšoanang, o phahameng oa viscosity. Joalo ka joala ba polyvinyl, starch ether, gomunu ea semela 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.
20, kamano pakeng tsa viscosity le mocheso oa HPMC, e lokelang ho lebisoa tlhokomelo ho ts'ebeliso e sebetsang?
- Karabo: The viscosity ea HPMC e fapane ka tsela e fapaneng le mocheso, ke hore, viscosity e 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. Bohareng ba viscosity :75000-100000 e sebelisoa haholo-holo ka lebaka la putty: ho boloka metsi hantle ka viscosity e phahameng :150000-200000 e sebelisoa haholo-holo bakeng sa likaroloana tsa polystyrene tse nang le mocheso oa seretse sekontiri se entsoeng ka phofo le likhaba tsa khalase seretse se futhumatsang. Lebaka: viscosity e phahameng, seretse ha se bonolo ho theola molora le ho phalla ho fanyeha, 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: Feb-05-2024