Karolelano ea HPMC Hydroxypropyl methyl cellulose le samente ke efe?
Seretse sa boenjiniere se thibelang metsi, litšobotsi tsa sona li itšetlehile ka boima bo latelang ba thepa e tala e entsoeng: Konkreite 30-340, phofo ea setene sa litšila tsa kaho ea boenjiniere 40-50, lignin fiber 20-24, calcium formate 4-6, hydroxypropyl methyl cellulose 7-9, phofo ea silicon carbide 40-45, phofo ea calcium hydroxide 10-20, phofo ea corundum e sootho 10-12, phofo e omileng ea silt ea toropo e kholo 30-35, mobu oa toropo oa Datong 40-45, aluminium sulfate 4-6, carboxymethyl Base starch 20-24, thepa e fetotsoeng nanotechnology carbon powder 4-6, metsi 600-650; Seretse sa boenjiniere se thibelang metsi sa sehlahisoa sena se na le mocheso o matla oa mocheso, ho hanyetsa mollo hantle, ho khomarelana ho matla le lebota, matla a ho hatella, ts'ebetso ea ho tsitlella, ho hanyetsa botsofali hantle, tšireletso e ntle ea tikoloho, ho hanyetsa mongobo hantle, ho hanyetsa mapetso, ho thibela ho oa. Kajeno re tla bua ka ho teteana ha tharollo ea metsi ea hydroxypropyl methyl cellulose, e ka lehlakoreng lefe? Ha re ithute eona.
1. Boima ba limolek'hule bo amanang, mocheso oa tharollo ea metsi, sekhahla sa ho seha le mokhoa oa liteko oa ether ea cellulose; 2. Ha mocheso oa phetoho ea khalase o phahame, boima ba limolek'hule bo bongata, viscosity ea tharollo e phahame ka tlhaho; 3. Ha dikahare tsa ether ea cellulose li phahame, viscosity ea tharollo e phahame, kahoo ts'ebetsong ea ts'ebeliso re lokela ho ela hloko bongata bo loketseng ba ho kenyelletsoa, ho thibela ho kenyelletsoa ho phahame haholo, le ho ama ka kotloloho litšobotsi tsa seretse sa samente le konkreite ea samente; 4. Joalo ka boholo ba tharollo, viscosity e tla boela e fokotsehe ha mocheso o ntse o eketseha, hammoho le ha dikahare tsa ether ea cellulose li phahame, kotsi ea mocheso e eketseha; Ho feta moo, phello ea 'nete ea ho teteana le eona e fapana ho latela bongata ba metsi a sebelisoang bakeng sa samente ea epoxy.
Tharollo ea metsi ea Hydroxypropyl methyl cellulose viscosity e ka boela ea sebetsa e le sehokelo sa bohlokoa bakeng sa litlhaloso mabapi le litšobotsi tsa ether ea cellulose, ha viscosity ea tharollo ea metsi e phahame, thepa ea eona e teteaneng ea samente ea epoxy e molemo, ka morao ho thepa ea gelling ea poleiti, empa haeba viscosity e le kholo haholo, e tla senya thepa e tala ea samente ea epoxy hang-hang ho ba metsi le ho qobelloa. Ha e le seretse se iketsang se nang le mokelikeli o phahameng, viscosity ea ether ea cellulose e tla boleloa hore e tlase.
Tharollo ea metsi ea ether ea cellulose ke 'mele oa pseudoplastic, re mohatong oa morao oa ho lemoha sekhahla sa ho kuta se seholo, viscosity e nyane.
Ka hona, ho akaretsa ke hore: ho kopana ha seretse sa samente ho tla fokotsoa ke matla a kantle, e leng se molemo ho kaho ea boenjiniere ka morao, empa tharollo ea metsi ea ether ea cellulose tabeng ea boleng bo tlase haholo ba mahloriso, ho tla hlaha litšobotsi tsa mokelikeli o seng oa Newtonian, ho fapana le hoo, ha boleng ba mahloriso bo eketseha, tharollo ea metsi e tla hlaha litšobotsi tsa mokelikeli oa pseudoplastic.
Ho boloka metsi ho tsoa ho hydroxypropyl methyl cellulose ke e 'ngoe ea litšobotsi tsa bohlokoa tsa hydroxypropyl methyl cellulose. Sekhahla sa mouoane oa metsi a tsoang lihlahisoa tse kopantsoeng tsa seretse le samente se angoa ke mocheso oa khase, mocheso le sekhahla sa khatello. Ka hona, linakong tse fapaneng tsa selemo, hammoho le hydroxypropyl methyl cellulose, tekanyo e tšoanang ea katleho ea metsi ea sehlahisoa e na le liphapang tse itseng.
Ka kakaretso, ha viscosity ea hydroxypropyl methyl cellulose e phahame, phello ea 'nete ea ho boloka metsi e tla ba betere, empa kotsi ea viscosity ho ho boloka metsi e tla fokotseha ka mor'a hore viscosity e fete 100,000 Mpa. s. Ha viscosity ea HYDROXYpropyl methyl cellulose e feta 100,000, sekhahla sa ho boloka metsi se ka ntlafatsoa haholo ka ho eketsa bongata ba hydroxypropyl methyl cellulose.
Mokhoeng o qaqileng oa kaho, phello ea ho boloka metsi ea slurry e ka fetoloa ka ho fetola bongata ba hydroxypropyl methyl cellulose. Lihlahisoa tsa letoto la hydroxypropyl methyl cellulose li ka rarolla bothata ba ho boloka metsi ka katleho tlas'a mocheso o phahameng o tsoelang pele. Sehleng se tsoelang pele sa mocheso o phahameng, haholo-holo libakeng tse chesang le tse tenang le kaho ea chromatography ka lehlakoreng le chabileng, ho hlokahala HYDROXYpropyl methyl cellulose ea boleng bo holimo ho nts'etsapele ho boloka metsi ha slurry.
Boleng bo phahameng ba hydroxypropyl methyl cellulose, e na le botsitso bo botle, lihlopha tsa eona tse sebetsang tsa butyl le hydroxypropyl oksijene tse nang le sebopeho sa fiber molecular chain kabo ea kopanelo, e ka nts'etsapele sehlopha sa methyl aldehyde le oksijene, 'me boleng ba metsi ba sebopeho sa dijithale ba maqhama a covalent bo ka fetoha metsi le metsi a tlamiloeng, ebe e laola boemo ba leholimo bo phahameng ba mocheso bo bakoang ke mouoane oa metsi, ho boloka metsi a mangata.
Boleng bo phahameng ba hydroxypropyl methyl cellulose bo ka lekana mobu o hlephileng le oa khoebo ka har'a lihlahisoa tse tsoakiloeng tsa seretse le samente, 'me likaroloana tsohle tse tiileng tsa cyst, lia koloba, lia pholile, 'me tsa etsa lera la filimi, mongobo ka nako e itekanetseng o lokolloa butle-butle ho tloha botlaaseng, ka ho qala ha motsoako oa manyolo a metsoako ea tlhaho, ebe li netefatsa ho lumellana ha matla a compressive a thepa e tala le matla a tensile. Ka lebaka leo, ts'ebetsong ea kaho ea lehlabula e tsoelang pele mochesong o phahameng, ho fihlela phello ea metsi, e lokela ho ba ho latela risepe ea bongata bo itseng le boleng ba lihlahisoa tsa hydroxypropyl methyl cellulose, ho seng joalo, e tla bontša ho tena kapele haholo le ho baka ho se lekane ha hydration, e fokotsa matla a compressive, e arole, e tla hlahisa litšobotsi tse kang metope e se nang letho le pelaelo, hape e kopantsoe le coefficient ea bothata ba kaho ea basebetsi. Ha mocheso o theoha, bongata ba hydroxypropyl methyl cellulose bo ka fokotseha butle-butle 'me phello e tšoanang ea ho boloka metsi e ka finyelloa.
Haeba ether ea cellulose e sa eketsoa, chromatography ea seretse se secha sa samente e tla oma kapele, ho etsa hore konkreite e se ke ea nosetsoa ka tsela e tloaelehileng, e leng se etsang hore seretse sa samente se se ke sa qaptjoa ka thata 'me sa khomarela hantle. Ka nako e ts'oanang, ho eketsoa ha ether ea cellulose ho etsa hore seretse sa samente se be le ductility e ntle le ho tenyetseha, 'me ho ntlafatsa matla a ho hatella a seretse sa samente.
1, boholo ba karoloana ea hydroxypropyl methyl cellulose
Boholo ba dikarolwana tsa ether ya cellulose bo senya ho qhibiliha ha yona. Ether e ntle ya cellulose e ba le sekgahla sa ho bola ha yona ka metsing mme dibopeho tsa yona tsa ho boloka metsi di phahame. Ka hona, boholo ba dikarolwana tsa ether ya cellulose bo lokela ho kenyeletswa diphuputsong tsa e nngwe ya dibopeho tsa yona. Ka kakaretso, boholo ba dikarolwana tsa ether ya cellulose bo lokela ho ba 80 mesh ho itshetlehile ka.
2, hydroxypropyl methyl cellulose e omme ntle le sekhahla sa matla a khoheli
Sekhahla sa matla a khoheli se omileng sa manic se se nang matla a khoheli, se bolela mocheso o itseng oa ether e omileng ea manic cellulose, tahlehelo ea boleng ba lik'hemik'hale e ne e le karolo ea pele ea boleng ba sampole ea motsoako. Bakeng sa boleng bo itseng ba ether ea cellulose ka sekhahla se omileng se se nang matla a khoheli se phahameng haholo, se tla fokotsa likarolo tse amehang ka ether ea cellulose, se lematse phello ea sebele ea ts'ebeliso ea lik'hamphani tse theohelang, empa hape se ntlafatse litšenyehelo tsa ho reka. Hangata ether e omileng ea cellulose e se nang matla a khoheli e ke ke ea feta 5.0%.
3, hydroxypropyl methyl cellulose potassium thiocyanate molora
Bakeng sa boleng bo itseng ba ether ea selulose ka har'a molora o phahameng haholo, e tla fokotsa ether ea selulose ka har'a likarolo tse amehang, e tla senya phello ea sebele ea ts'ebeliso ea lik'hamphani tse theohelang tlase, selulose ether ea potasiamo thiocyanate molora ke eona ntho e ka sehloohong e lokelang ho nahanoa ka boleng ba eona ba index.
4, ho teteana ha hydroxypropyl methyl cellulose
Tšusumetso ea ho boloka metsi le ho teteana ha hydroxypropyl methyl cellulose ke senotlolo sa ho eketsa ether ea seretse sa samente le cellulose ka har'a viscosity ea eona le ho kenngoa ha eona.
5, boleng ba PH ba hydroxypropyl methyl cellulose
Viscosity ea lihlahisoa tsa hydroxypropyl methyl cellulose e fokotseha butle-butle mochesong o phahameng kapa ka mor'a ho bolokoa nako e telele, haholo-holo bakeng sa lihlahisoa tse nang le viscosity e phahameng, kahoo boleng ba pH bo tlameha ho lekanyetsoa. Ka kakaretso ho laetsoe hore sehlopha sa boleng ba PH sa ether ea cellulose se lokela ho sebetsoa e le 5-9.
6. Phetiso ea hydroxypropyl methyl cellulose
Melemo le mathata a phetiso ea hydroxypropyl methyl cellulose a ka ama ka kotloloho phello ea 'nete ea tšebeliso ea eona thepa ea kaho. Mabaka a mantlha a senyang phetiso ea ether ea cellulose ke
1) boleng ba thepa e tala; (2) phello ea sebele ea ho tlosa ashene; (3) ho lokisa theknoloji ea ts'ebetso; (4) ho lokisa li-solvent tsa tlhaho; (5) phello ea sebele ea zhonghe.
Ho ya ka phello ya sebele ya tshebediso, phetiso ya ether ya selulose ha ea lokela ho ba ka tlase ho 80%.
7, mocheso o belaelloang oa hydroxypropyl methyl cellulose
Hydroxypropyl methyl cellulosedikarolong tsa samente e le senotlolo sa ho eketsa dikhomaretsi, viscosity le sesebelisoa sa ho boloka metsi, kahoo viscosity le mocheso wa gel ke boleng ba bohlokwa ba index ya hydroxypropyl methyl cellulose. Mocheso o sebediswa ho ahlola mofuta le tlhaloso ya ether ya cellulose, mme tekanyo ya ho nkela ether ya cellulose sebaka e amana.
8. Ho phaella moo, letsoai le masalla le tsona di tla senya mocheso wa sekhomaretsi. Ha mocheso wa tharollo ya metsi o nyoloha, polymer ya faeba e haella butle-butle, mme viscosity ya tharollo ya metsi e fokotseha. Ha ntlha ya sekhomaretsi e fihlellwa, polymer e omiswa ka ho feletseng mme sekhomaretsi se a hlahiswa. Ka hona, mocheso wa tshebetso wa ditho tsa samente hangata o ka tlase ho mocheso wa pele wa sekhomaretsi. Tlas'a maemo ana, ha mocheso o le tlase, viscosity e ba hodimo, mme phello ya nnete ya viscosification le ho boloka metsi e ba bohlokwa haholo.
Nako ea poso: Mmesa-25-2024