Hydroxypropyl methyl cellulose (HPMC) viscosity bakeng sa Skim coat ?
- karabo: Skim coat e lokile hangata HPMC 100000cps, e telele ho feta e hlokahalang ka seretse, e batla bokhoni ba 150000cps ba ho e sebelisa. Ho feta moo, HPMC ke karolo ea bohlokoa ka ho fetisisa ea ho boloka metsi, e lateloa ke ho teteaneng. Ho Skim coat, hafeela ho boloka metsi ho le molemo, viscosity e tlaase (7-80000), hape hoa khoneha, ha e le hantle, viscosity e kholoanyane, ho boloka metsi a lekanyelitsoeng ho molemo, ha viscosity e feta 100. sekete, viscosity ea ho boloka metsi ha e ngata.
Matšoao a mantlha a tekheniki a hydroxypropyl methyl cellulose (HPMC) ke afe?
Karabo: Likahare tsa Hydroxypropyl le viscosity, basebelisi ba bangata ba tsotella matšoao ana a mabeli. Likahare tsa Hydroxypropyl li phahame, ho boloka metsi ho molemo ka kakaretso. Viscosity, ho boloka metsi, leloko (empa eseng ka ho feletseng) ho boetse ho molemo, le viscosity, seretse sa samente se molemo ho sebelisa tse ling.
Hydroxypropyl methyl cellulose (HPMC) ke lisebelisoa life tse tala?
Karabo: hydroxypropyl methyl cellulose (HPMC) lisebelisoa tse ka sehloohong tse tala: k'hothone e hloekisitsoeng, chloromethane, propylene oxide, lisebelisoa tse ling tse tala, alkali ea letlapa, acid, toluene, joala ea isopropyl joalo-joalo.
HPMC ka Skim seaparo ka kopo, karolo e ka sehloohong, hore na lik'hemik'hale?
Karabo: HPMC ka Skim coat , thickening, metsi le kaho ea likarolo tse tharo. Thickening: selulose e ka teteaneng ho fanyeha, e le hore tharollo e lule e le junifomo holimo le tlase karolo ea ho fanyeha ho thibela phallo. Ho boloka metsi: etsa hore Skim coat e ome butle, e thusa grey calcium ts'ebetsong ea karabelo ea metsi. Kaho: lubrication ea cellulose, e ka etsa hore seaparo sa Skim se be le kaho e ntle. HPMC ha e kenye letsoho tšebetsong efe kapa efe ea lik'hemik'hale, empa e bapala karolo ea tšehetso feela. Skim seaparo le metsi, leboteng, ke karabelo ea lik'hemik'hale, ka lebaka la ho hlahisa lintho tse ncha, lerako la seaparo sa Skim ho theoha lerako, fatše ho ba phofo, ebe o sebelisa, eseng hantle, hobane o thehile ntho e ncha. (calcium carbonate). Likarolo tse kholo tsa phofo ea calcium e bohlooho ke: Ca(OH)2, CaO le motsoako o monyenyane oa CaCO3, CaO+H2O=Ca(OH)2 - Ca(OH)2+CO2=CaCO3↓+H2O grey calcium ka metsing. le moea tlas'a ketso ea CO2, ho thehoa ha k'halsiamo carbonate, 'me HPMC feela metsi, thusa ea bohlooho k'halsiamo molemo karabelo, eona ha ea ka ea kenya letsoho karabelo efe kapa efe.
HPMC ke non-ionic cellulose ether, joale seo e seng ionic ke eng?
A: Ka kakaretso, li-non-ion ke lintho tse sa ioniseng metsing. Ionization ke ho arohana ha electrolyte ho li-ion tse tsamaisoang mahala ka har'a motsoako o itseng, joalo ka metsi kapa joala. Ka mohlala, letsoai leo re le jang letsatsi le leng le le leng - sodium chloride (NaCl) e qhibiliha ka metsing 'me e ionize ho hlahisa li-ion tse sa lefelloeng tsa sodium (Na +) tse nang le tefiso e ntle le li-ion tsa chloride (Cl) tse nang le tefiso e mpe. Ke hore, HPMC ka metsing ha e ikarole ho li-ion tse chesitsoeng, empa e teng joalo ka limolek'hule.
Mocheso oa gelation oa hydroxypropyl methyl cellulose o amana le eng?
Karabo: Mocheso oa mocheso oa gel oa HPMC o amana le litaba tsa methoxyl. Ha maemo a methoxyl a le tlase, mocheso oa gel o phahame.
Skim coat powder le HPMC ha ho na kamano?
Karabo: Skim coat drop drop powder haholo-holo le boleng ba molora oa calcium bo na le kamano e kholo haholo, 'me HPMC ha e na kamano e kholo haholo. Khalsiamo e tlase ea khalsiamo e bohlooho le karolo e sa nepahalang ea CaO le Ca(OH)2 ka k'halsiamo e bohlooho e tla etsa hore phofo e theohe. Haeba ho na le kamano le HPMC, joale ho boloka metsi a futsanehileng a HPMC ho tla boela ho baka tahlehelo ea phofo.
Phapano ke efe lipakeng tsa metsi a batang a qhibilihang le a chesang a soluble hydroxypropyl methyl cellulose ts'ebetsong ea tlhahiso?
- Karabo: Mofuta oa tharollo ea metsi a batang a HPMC ke kamora kalafo ea glyoxal, e kentsoeng metsing a batang ka potlako e qhalakantsoeng, empa e sa qhibilihe, viscosity e nyoloha, e qhibiliha. Mofuta oa thermosoluble ha o so alafshoe ka holim'a metsi ka glyoxal. Palo ea glyoxal e kholo, ho hasana ho potlakile, empa viscosity e lieha, chelete e nyane, ho fapana le hoo.
Ke eng ka hydroxypropyl methyl cellulose (HPMC) e nkhang hamonate?
- Karabo: HPMC e hlahisoang ka mokhoa oa solvent e entsoe ka toluene le joala ba isopropyl. Haeba ho hlatsoa ha ho molemo haholo, ho tla ba le tatso e setseng.
Litšebeliso tse fapaneng, ho khetha hydroxypropyl methyl cellulose (HPMC) e nepahetseng joang?
- karabo: ho jeoa ke bolutu ka tšebeliso ea phofo ea ngoana: tlhokahalo e tlaase, viscosity 100000, ho lokile, ke habohlokoa ho sireletsa metsi ho ba haufi le. Kopo ea seretse: litlhoko tse phahameng, litlhoko tse phahameng tsa viscosity, 150000 ho ba betere. Kopo ea sekhomaretsi: tlhokahalo ea lihlahisoa tsa hang-hang, viscosity e phahameng.
Lebitso le leng la hydroxypropyl methyl cellulose ke lefe?
– KARABO: Hydroxypropyl MethylCellulose, E khutsufalitsoeng e le HPMC kapa MHPC, kapa Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether.
HPMC ts'ebelisong ea Skim coat, ke hobane'ng ha Skim coat bubble?
Karabo: HPMC ka Skim coat , thickening, metsi le kaho ea likarolo tse tharo. Ho se kopanele maikutlong afe kapa afe. Lisosa tsa li-bubble: 1, metsi a mangata haholo. 2, tlase ha e omme, ka holim'a lera la ho phunya, hape ho bonolo ho blister.
Lebota le ka hare le ka ntle foromo ea Skim jase?
– karabo: ka hare lerako Skim seaparo : calcium 800KG gray calcium 150KG (starch ether, pure green, peng runtu, citric acid, polyacrylamide ka eketsoa ka nepo)
Ka ntle lerako Skim seaparo : samente 350KG calcium 500KG quartz lehlabathe 150KG latex phofo 8-12kg selulose ether 3KG starch ether 0.5kg lehong fiber 2KG
Phapano ke efe lipakeng tsa HPMC le MC?
– Karabo :MC ke methyl cellulose, e entsoeng ka cellulose ether ka letoto la liketso le methane chloride e le etherifying agent ka mor'a hore k'hothone e hloekisitsoeng e phekoloe ka alkali. 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 ea nonionic cellulose ether.
(1) Ho boloka metsi a methyl cellulose ho ipapisitse le palo ea eona ea tlatsetso, viscosity, botle ba likaroloana le sekhahla sa ho qhibiliha. Ka kakaretso eketsa palo e kholo, fineness e nyane, viscosity, sekhahla sa ho boloka metsi se phahame. Har'a bona, palo ea tlatsetso e na le tšusumetso e kholo ho boloka metsi, 'me viscosity ha e lekane le ho boloka metsi. Sekhahla sa ho qhibiliha se itšetlehile haholo ka tekanyo ea phetoho ea holim'a metsi le boleng ba likaroloana tsa likaroloana tsa cellulose. Ho li-ether tse 'maloa tse kaholimo, methyl cellulose le hydroxypropyl methyl cellulose sekhahla sa ho boloka metsi se phahame.
(2) Methyl cellulose e qhibiliha ka metsing a batang, ao ho leng thata ho qhibiliha ka metsing a chesang. Tharollo ea eona ea metsi e tsitsitse haholo ka hare ho pH = 3 ~ 12. 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, e leng ho amang ho aha ha seretse ka botebo.
(4) Methyl cellulose e na le tšusumetso e hlakileng mabapi le ho hahoa le ho khomarela seretse. "Adhesion" mona e bolela ho khomarela ho utluoa ke mosebeletsi pakeng tsa sesebelisoa le lerako la lerako, e leng ho hanyetsa ho kuta ha seretse. Ho khomarela ho hoholo, ho hanyetsa ho kuta ha seretse ho hoholo, matla a hlokoang ke basebetsi ha a ntse a sebelisoa le ona a maholo, 'me ho hahoa ha seretse ho futsanehile. Ka lihlahisoa tsa cellulose ether, ho khomarela ha methyl cellulose ho boemong bo itekanetseng.
HPMC hydroxypropyl methyl cellulose, e hloekisoa ka k'hothone ka mor'a phekolo ea alkali, 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. Tekanyo ea ho nka sebaka ka kakaretso ke 1.2 ~ 2.0. Thepa ea eona e fapana ho latela karolo ea methoxy le hydroxypropyl content.
(1) Hydroxypropyl methyl cellulose e qhibiliha habonolo metsing a batang, ao ho leng thata ho a qhibiliha ka metsing a chesang. Leha ho le joalo, mocheso oa eona oa gelation metsing a chesang ho hlakile hore o phahame ho feta oa methyl cellulose. Ho qhibiliha ha methyl cellulose metsing a batang le hona ho ile ha ntlafatsoa haholo.
(2) Viscosity ea hydroxypropyl methyl cellulose e amana le boima ba eona ba molek'hule, 'me ha boima ba limolek'hule bo phahame, ho ba le viscosity e phahameng. Mocheso o boetse o ama viscosity. Viscosity ea fokotseha ha mocheso o ntse o eketseha. Empa phello ea eona ea mocheso o phahameng oa viscosity e tlase ho feta ea methyl cellulose. Tharollo e tsitsitse ha e bolokiloe mocheso oa kamore.
(3) Hydroxypropyl methyl cellulose e tsitsitse ho acid le setsi, 'me tharollo ea eona ea metsi e tsitsitse haholo ka har'a pH = 2 ~ 12. Soda ea caustic le metsi a lime ha li na phello e fokolang ho thepa ea eona, empa alkali e ka potlakisa sekhahla sa ho qhibiliha le ho ntlafatsa viscosity. Hydroxypropyl methyl cellulose e tsitsitse 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 bolokoa ha metsi a hydroxypropyl methyl cellulose ho itšetlehile ka tekanyo ea eona le viscosity, 'me sekhahla sa ho boloka metsi sa hydroxypropyl methyl cellulose se phahame ho feta sa methyl cellulose ka tekanyo e tšoanang.
(5) Hydroxypropyl methyl cellulose e ka kopanngoa le metsoako ea polymer e qhibilihang ka metsi hore e be tharollo e tšoanang, e phahameng ea viscosity. Joalo ka joala ba polyvinyl, starch ether, sekhomaretsi sa meroho 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 enzyme ho feta methyl cellulose, 'me monyetla oa ho senyeha ha enzyme ea eona o tlase ho feta oa methyl cellulose.
Ke eng e lokelang ho lebisoa tlhokomelo ho ts'ebeliso e sebetsang mabapi le kamano lipakeng tsa viscosity le mocheso oa HPMC?
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 bua ka viscosity ea 2% ea sehlahisoa ka metsing ka likhato tse 20 tsa Celsius.
Ka ts'ebeliso e sebetsang, libakeng tse nang le phapang e kholo ea mocheso pakeng tsa lehlabula le mariha, ho lokela ho hlokomeloa hore ho kgothaletswa ho sebelisa viscosity e batlang e le tlaase nakong ea mariha, e leng se loketseng ho haha. Ho seng joalo, ha mocheso o le tlase, viscosity ea selulose e tla eketseha, 'me ha ho senya, maikutlo a tla ba boima.
Viscosity e bohareng : 75000-100000 haholo-holo e sebelisetsoang putty
Lebaka: Ho boloka metsi hantle
Viscosity e phahameng: HPMC 150000-200000 e sebelisoa haholo bakeng sa polystyrene particle insulation mortar glue powder material and vitrified bead insulation seretse.
Lebaka: viscosity e phahameng, seretse ha se bonolo ho theoha, ho phalla ho leketlile, ho ntlafatsa mohaho.
Empa ha re bua ka kakaretso, li-viscosity tse phahameng, ho boloka metsi ho molemo, lifeme tse ngata tse omeletseng tsa seretse, ha ho nahanoa ka litšenyehelo, li sebelisa li-viscosity tse mahareng HPMC selulose (75000-100000) ho nkela sebaka se mahareng le se tlase viscosity HPMC selulose (20000-40000) ho fokotsa. bongata ba tlatsetso.
Nako ea poso: Jan-10-2022