HPMC Hydroxypropyl methyl cellulose le karo-karolelano ea samente ke eng?
Seretse sa boenjiniere se sa keneleng metsi, litšoaneleho tsa sona li ipapisitse le boima bo latelang ba lisebelisoa tse tala tse entsoeng: Konkreite 30-340, moaho oa boenjiniere oa litšila tsa phofo ea 40-50, lignin fiber 20-24, calcium formate 4-6,hydroxypropyl methyl cellulose7-9, silicon carbide powder 40-45, calcium hydroxide powder 10-20, sootho corundum phofo 10-12, motse o moholo o omileng oa silt phofo 30-35, mobu oa motse oa Datong 40-45, aluminium sulfate 4-6, carboxymethyl Base starch 20-24, lisebelisoa tse fetotsoeng nanotechnology carbon phofo 4-6, metsi 600-650;Seretse sa boenjiniere se sa keneleng metsi sa sehlahisoa sena se na le mocheso o matla oa mocheso, ho hanyetsa mollo o motle, ho tlamahanngoa ka matla le lebota, matla a khatello, ts'ebetso e tsitsitseng, ho hanyetsa botsofali hantle, ts'ireletso e ntle ea tikoloho, e ntle haholo ea mongobo, ho thibela ho phatloha, ho thibela ho oela fatše.Kajeno re tla bua ka viscosity ea hydroxypropyl methyl cellulose aqueous solution kaofela e ka likarolo life?Ha re e ithute ka sebele.
1. Boima ba molek'hule, mocheso oa tharollo ea metsi, sekhahla sa ho itšeha le mokhoa oa liteko oa cellulose ether;2. Ha mocheso oa phetoho ea khalase o phahame, boima bo boholo ba molek'hule, viscosity ea tharollo e phahame ka tlhaho;3. Ha litaba tsa cellulose ether li phahame, li na le viscosity e phahameng ea tharollo, kahoo ts'ebetsong ea kopo re lokela ho ela hloko palo e loketseng ea ho kenngoa, ho thibela ho kenngoa ho holimo haholo, 'me ho ama ka ho toba litšobotsi tsa seretse sa samente. le konkreite ea samente;4. Joaloka boholo ba tharollo, viscosity e tla boela e fokotsehe ka ho eketseha ha mocheso, hammoho le litaba tse phahameng tsa cellulose ether, kotsi e kholo ea mocheso;Ho phaella moo, phello ea sebele e teteaneng e boetse e fapana ho ea ka bongata ba metsi a sebelisoang bakeng sa samente ea epoxy.
Hydroxypropyl methyl cellulose aqueous solution viscosity e boetse e ka sebetsa e le sehokelo sa bohlokoa bakeng sa maikutlo mabapi le litšobotsi tsa cellulose ether, ho phahama ha viscosity ea tharollo ea metsi, thepa ea eona e teteaneng ea samente ea epoxy, ho molemo, e ka morao ea thepa ea gelling poleiti. empa haeba viscosity e le kholo haholo, e tla lematsa thepa e tala ea samente ea epoxy hang-hang mokelikeli le ts'ebetsong.Ha e le seretse se seng se ikemetseng se nang le metsi a mangata, viscosity ea cellulose ether e tla hlalosoa e le tlase.
Cellulose ether aqueous solution ke 'mele oa pseudoplastic, rona nakong ea morao-rao ea ho lemoha sekhahla sa ho kuta e kholoanyane, viscosity e nyenyane.
Ka hona, ho akaretsa ke: momahano oa seretse sa samente tla fokotswa ke matla a ka ntle, e leng molemo ho kaho ea boenjiniere ka morao, empa selulose ether aqueous tharollo tabeng ea boleng tlaase haholo mahloriso, ho tla etsahala litšobotsi tse sa Mokelikeli oa Newtonian, ho fapana le hoo, ha boleng ba mahloriso bo eketseha, tharollo ea metsi e tla ba le litšobotsi tsa mokelikeli oa pseudoplastic.
Ho boloka metsi ho tsoa ho hydroxypropyl methyl cellulose ke e 'ngoe ea thepa ea bohlokoa ea hydroxypropyl methyl cellulose.Sekhahla sa mouoane oa metsi ka har'a seretse se tsoakiloeng le lihlahisoa tse thehiloeng ho samente e angoa ke mocheso oa khase, mocheso le sekhahla sa khatello.Ka hona, ka linako tse fapaneng tsa selemo, hammoho le hydroxypropyl methyl cellulose palo e ts'oanang ea katleho ea metsi ea sehlahisoa e na le liphapang.
Ka kakaretso, ha viscosity ea hydroxypropyl methyl cellulose e phahame, phello ea sebele ea ho boloka metsi e tla ba molemo, empa kotsi ea viscosity 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 palo ea hydroxypropyl methyl cellulose.
Ts'ebetsong e qaqileng ea kaho, phello ea ho boloka metsi ea slurry e ka fetoloa ka ho fetola palo ea hydroxypropyl methyl cellulose.Lihlahisoa tsa letoto la Hydroxypropyl methyl cellulose li ka rarolla bothata ba ho boloka metsi tlas'a mocheso o phahameng o tsoelang pele.Nakong e tsoelang pele ea mocheso o phahameng oa mocheso, haholo-holo libakeng tse chesang le tse borang le kaho ea chromatography ka lehlakoreng le chabileng, ho hlokahala boleng bo phahameng ba HYDROXYpropyl methyl cellulose ho ntšetsa pele ho boloka metsi a slurry.
Boleng bo phahameng ba hydroxypropyl methyl cellulose, e na le botsitso bo botle, lihlopha tsa eona tsa thuto e phahameng ea butyl le hydroxypropyl oksijene hammoho le kabo e kopaneng ea fiber molecular chain chain, e ka nts'etsapele sehlopha sa methyl aldehyde le oksijene, le boleng ba metsi ba mofuta oa dijithale oa covalent bonds. , e be metsi a tlamiloeng le metsi a qhalakantsoeng, ebe o laola mocheso o phahameng oa mocheso o bakoang ke ho fetoha mouoane oa metsi, ho boloka metsi a mangata.
Boleng bo phahameng ba hydroxypropyl methyl cellulose e ka lekana mobu o hlephileng le oa khoebo ka lihlahisoa tse tsoakiloeng tsa seretse le samente, 'me likaroloana tsohle tse tiileng li na le cyst, e mongobo, e pholileng,' me e etsa lera la filimi, mongobo ka nako e telele o tsoa butle butle ho tloha setsing. Ho qala ha motsoako oa motsoako oa hydration karabelo, ebe o netefatsa momahano oa lisebelisoa tse tala tse nang le matla a ho hatella le matla a thata.Ka ts'ebetso e tsitsitseng ea ho haha mocheso o phahameng oa lehlabula, ka hona, ho fihlela phello ea metsi, e lokela ho lumellana le recipe bakeng sa palo e itseng le boleng ba lihlahisoa tsa hydroxypropyl methyl cellulose, ho seng joalo, e tla bontša boring ka potlako haholo 'me e baka ho haella ha metsi, ho fokotsa khatello ea kelello. matla, petsoha, popped litšoaneleho tse kang metope e se nang letho moqomo le lipelaelo, hape ho kopantswe le mosebetsi kaho boima coefficient.Ha mocheso o theoha, palo ea hydroxypropyl methyl cellulose e ka fokotsoa butle-butle mme phello e tšoanang ea ho boloka metsi e ka finyelloa.
Haeba cellulose ether e sa eketsoa, chromatography ea seretse se secha sa samente e tla omella ka potlako, ho etsa hore konkreite e se ke ea kolobisoa ka mokhoa o tloaelehileng, e leng se etsang hore seretse sa samente se se ke sa e-ba thata le ho fumana ho khomarela hantle.Ka nako e ts'oanang, ho eketsoa ha selulose ether ho etsa hore seretse sa samente se be le ductility e ntle le ho feto-fetoha ha maemo, 'me se ntlafatsa matla a khatello ea bonding ea seretse sa samente.
1, boholo ba karoloana ea hydroxypropyl methyl cellulose
Boholo ba karoloana ea cellulose ether bo senya ho qhibiliha ha eona.Ether ea cellulose e ntle haholo, e potlakisa sekhahla sa ho bola ha eona metsing le ho phahamisa litšobotsi tsa eona tsa ho boloka metsi.Ka hona, boholo ba karoloana ea cellulose ether e lokela ho kenyelletsoa lipatlisisong tsa e 'ngoe ea litšobotsi tsa eona.Ka kakaretso, cellulose ether particle boholo ba 80 letlooeng thehiloeng.
2, hydroxypropyl methyl cellulose e omme ntle le sekhahla sa khoheli
Dry manic no gravity rate, e bua ka mocheso o itseng oa manic cellulose ether e ommeng, tahlehelo ea boleng ba lik'hemik'hale e ikarabella bakeng sa liphesente tsa boleng ba sampole ea mantlha ea sebopeho.Bakeng sa boleng bo itseng ba selulose ether ka omileng ntle le sekhahla matla a khoheli e phahameng haholo, e tla fokotsa likarolo tse amehang ka selulose ether, senya phello ea sebele ea tšebeliso ea lik'hamphani tse tlaase, empa hape le ho ntlafatsa theko ea theko.Hangata ether e ommeng ea cellulose ntle le sekhahla sa matla a khoheli ha ea lokela ho feta 5.0%.
3, hydroxypropyl methyl cellulose potassium thiocyanate molora
Bakeng sa boleng bo itseng ba selulose ether ka dikahare molora e phahameng haholo, e tla fokotsa selulose ether ka likarolo tse amehang, senya phello ea sebele ea tšebeliso ea lik'hamphani tlaase noka, selulose ether potasiamo thiocyanate molora dikahare ke nahanela ka sehloohong litšobotsi tsa eona. boleng ba index.
4, hydroxypropyl methyl cellulose viscosity
Hydroxypropyl methyl cellulose ho boloka metsi le phello e teteaneng ke senotlolo sa ho eketsa samente seretse sa cellulose ether ka viscosity ea eona le ho kenyelletsoa.
5, hydroxypropyl methyl cellulose PH boleng
Viscosity ea lihlahisoa tsa hydroxypropyl methyl cellulose e fokotseha butle-butle ka mocheso o phahameng kapa ka mor'a ho bolokoa nako e telele, haholo-holo bakeng sa lihlahisoa tse phahameng tsa viscosity, kahoo boleng ba pH bo tlameha ho fokotsoa.Ka kakaretso ho hlalosoa hore karolo ea PH ea boleng ba cellulose ether e lokela ho sebelisoa e le 5-9.
6. Phetiso ea hydroxypropyl methyl cellulose
Melemo le bofokoli ba phetisetso ea hydroxypropyl methyl cellulose e ka ama ka kotloloho phello ea ts'ebeliso ea eona ho thepa ea moaho.Lintlha tse ka sehloohong tse senyang phetiso ea cellulose ether ke
1) boleng ba lisebelisoa tse tala;(2) phello ea sebele ea ho bolaea;(3) Tokiso ea theknoloji ea ho sebetsa;(4) ho lokisoa ha solvent;(5) Phello ea sebele ea zhonghe.
Ho ea ka phello ea sebele ea kopo, phetisetso ea cellulose ether ha ea lokela ho ba ka tlase ho 80%.
7, mocheso o belaelloang oa hydroxypropyl methyl cellulose
Hydroxypropyl methyl cellulose likarolong tsa samente e le senotlolo sa ho eketsa li-adhesives, viscosity le ho boloka metsi, kahoo viscosity le mocheso oa gel ke bohlokoa ba index ea hydroxypropyl methyl cellulose.Mocheso o sebelisetsoa ho ahlola mofuta le tlhaloso ea cellulose ether, 'me tekanyo ea ho fetola cellulose ether e amana.
8. Ho phaella moo, letsoai le masala le tsona li tla senya mocheso oa sekhomaretsi.Ha mocheso oa tharollo ea metsi o phahama, fiber polymer butle-butle e haelloa ke metsi, 'me viscosity ea tharollo ea metsi e fokotseha.Ha ntlha ea ho khomarela e fihlile, polymer e omisitsoe ka ho feletseng 'me sekhomaretsi se hlahisoa.Ka hona, mocheso o sebetsang oa litho tsa samente hangata o ka tlase ho mocheso oa sekhomaretsi oa pele.Tlas'a maemo ana, mocheso o tlase, ho ba le viscosity e phahameng, 'me phello ea sebele ea viscosification le ho boloka metsi e le ea bohlokoa haholo.
Nako ea poso: Phup-09-2022