Mc ke methyl celnyl, e fumanoang ka ho phekola k'hothone e ntlafalitsoeng le Alkali, ho sebelisa methyl cloride e le moemeli ea tloaetseng ho etsa lintho tse ling. Ka kakaretso, tekanyo ea sebaka ke 1.6 ~ 2.0, mme tharollo e boetse e fapana le likhato tse fapaneng tsa sebaka. Ke ea sesenyi sa sephiri seo.
(1) ho boloka metsi ka metsiMethyl cellulouloseHo ipapisitse le palo ea eona ea tlatsetso, ho etsa lintho, nako e loketseng le sekhahla sa disphol. Ka kakaretso, haeba palo ea lintlha e le kholo, botle bo nyane, 'me pono e kholo, sekhahla sa ho boloka metsi se phahame. Har'a bona, palo ea lintlha tse ngata e na le tšusumetso e kholo ka tekanyo ea phomolo ea metsi, 'me boemo ba pono ha bo tšoanelehe boemo ba ho boloka metsi. Sekhahla sa disfototion se its'etleha haholo ho latela tekanyo ea ts'ebetso ea mantlha ea likaroloana tsa cellulose le khalo ea likaroloana. Har'a Ethe ea selefouso e kholo ea selefouso, Methyl Cllluke le HydroxypropyL Methyl Celdulose e na le litheko tse phahameng tsa metsi.
(2) Methylcelllll. E lumellana hantle le starch, gour gum, jj. Ha mocheso o fihla mochesong oa botloho, ketsahalo e hlaha.
(3) Phetoho ea mocheso e tla ama haholo sekhahla sa ho boloka metsi a ho boloka tšepe. Ka kakaretso, thempereichara e phahame ka ho fetisisa ho boloka metsi. Haeba mocheso oa setulo o feta ho 40 ° C, bolokolohi ba metsi ba methyl ba ho mpefala haholo, bo tla ama ka matla ho etsa seretse.
(4) Cem cellulose e na le phello e 'ngoe ho ikoetlisa le ho khomarela seretse. "Ho ba le moea ona mona ho bua ka phallo e ileng ea ikutloa pakeng tsa sesebelisoa sa mohiruoa le lerako sena se tla hana ka seretse. Ho latela moea o meholo, leq ha ho hanyetsa seretse sa seretse ho bohlokoa, 'me matla a hlokoang ke basebetsi molemong oa ts'ebetso a futsanehile. Kholiseho ea methylcelllulose e maemong a itekanetseng ka liofisi tsa cellulose ether.
HPMC ke hydroxypropyproppyl methyl cellulosese, e leng cellulose e sa tsoakoang ka mor'a lefu la Alkali, le methyl chloride ea Alkali Tekanyo ea sebaka hangata e 1.2 ho 2.0. Thepa ea eona e fapana ho latela karolo ea litaba tsa mekhoa ea mekhoa ea mekhoa ea meketso le litaba tsa hydroxypropyl.
(1) Hydroxypropypropy-hydylcelubulose ka metsing a batang, empa e tla kopana le mathata a ho qhala metsi a chesang. Empa mocheso oa eona oa borena ka metsing a chesang o phahame haholo ho feta oa tšepe ea methyl. Ho felisoa ha metsi a batang le hape ho boetse ho ntlafala haholo le ho bapisoa le methyl cellulose.
. Mocheso o ama pono ea oona, joalo ka ha mocheso oa eketseha, Viscostory ea fokotseha. Empa pono ea eona ha e angoa ke mocheso o phahameng ho feta hell cellulase. Tharollo ea eona e tsitsitse ka polokelo ea mocheso oa kamore.
. Cada le metsi a lime ha a na phello e nyane ts'ebetsong ea eona, empa Alkali a ka potlakisa ho qhala mefokolo ebe o eketsa viscosicity. HydroxypropypropikhLulose e tsitsitseng ho letsoai ho ea letsoai le tloaelehileng, empa ha tharollo ea letsoai e phahame, pono ea hydroxyproppy e batla e eketseha.
(4) ho boloka metsi ka metsihydroxypropypropinyl methylcellHo ipapisitse le palo ea eona ea tlatsetso, pono, jj.
(5) HydroxyproPypropyL methylcelulose e ka tsoakoa ka metsoako ea polymer ea metsi ho theha tharollo le setšoantšo se phahameng le se phahameng. Joalo ka polyvinyl joala, starch ether, leqhubu la meroho, jj.
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Nako ea poso: Ap-28-2024