HPMC (Hydroxypropypropity Methylcelllese) Na lisebelisoa tsa Prolymer li sebelisoa haholo ka ho haheng, meriana, lijo le likarolo tsa letsatsi le letsatsi le masimo a letsatsi le letsatsi. Ho ea ka likhoele tsa eona ka metsing, e ka aroloa ka mofuta oa metsi a batang a moea le mofuta o chesang. Ho na le liphapang tsa bohlokoa ts'ebetsong ea tlhahiso ea mefuta ena e 'meli ea HPMC.
(1), ho sebetsa ka boitsebiso e tala
1. Mofuta oa 'nete oa moea o batang
Ts'ebetsong ea tlhahiso ea HpMC ea metsi a batang hang-hang, thepa e tala e hloka ho etsoa. Lisebelisoa tse tala ka kakaretso li kenyelletsa celluulose, Methanol, Methur Chrifide, joalo-joalo. Haholo-holo, kalafo ea cellulose e hloka ho omella le ho hatella ho fihlela kabo e loketseng ea sebopeho se loketseng.
2. Mofuta o futhumetseng
Hot-Melt Hpmc e ts'oana le hpmc ea metsi a batang ka tatellano ea ts'ebetso ea lintho tse tahang, empa e na le litlhokahalo tse phahameng bakeng sa ts'ebetso ea selefouso. Hobane hpmc e chesang e chesa ka lithemparetjha tse phahameng, bohloeki le boholo ba cellulose bo na le phello e bohlokoa haholoanyane ts'ebetsong ea karabelo. Hangata ho hlokahala hore re sebelise selefoui ea bohloeki e phahameng, 'me boholo ba difiro bo tlameha ho laoloa ka kotloloho nakong ea ts'ebetso e mpe.
(2), Synthesis karabelo
1. Mofuta oa 'nete oa moea o batang
Boitšoaro ba Syntthasis boatsoa ka mocheso o tlase, ka kakaretso bo laoloa ka li-celsius tse 20 -50 Celsius. Nakong ea thuto, cellulose e qala ka tlasa maemo a alkaline a le haufi le hydrolyze le liketane tsa lilom tsa lisele tsa mohala li hlahisa lihlopha tsa hydroyl. Joale, ba ikarola ba kang Methanol, propylene Oxide ba ekelitsoe tlasa maemo a makatsang a ho etsa karabelo ea bother. Ts'ebetso eohle ea karabelo e hloka taolo e thata ea mocheso le pH ho netefatsa hore na litsietsi le botsitso ba sehlahisoa.
2. Mofuta o futhumetseng
Boitšoaro ba synthesis bo etsoa ka mocheso o phahameng, ka kakaretso ba 50-80 degrey degrey desusus kapa ba bangata haholo. Ts'ebetso ea karabelo e ts'oana le mofuta oa hang-hang ea moea o batang, empa ka lebaka la sekhahla sa mocheso o phahameng, taolo ea mocheso le mokhoa o nepahetseng o hlokahalang. Ka lithemparetjha tse phahameng, maikutlo a hydrolysis le a matherese a se sebetse hantle, 'me kabo ea limolek'hule ea li-molengcalar ea sehlahisoa e junifomo e joalo.
(3) Ts'ebetso ea ho sebetsa ka poso
1. Mofuta oa 'nete oa moea o batang
Kamora hore karabelo ea syntthesis e arabele hpmc ea moea e batang e phethetsoe, letoto la lits'ebetso tsa kamora ho sebetsa la poso lia hlokahala. Ea pele ke karabelo ea ho se nke lehlakore ea ho khelosa lintho tsa alkanaline ka motsoako oa karabelo. Ho fitlhala le ho hlatsoa li etsoa ho tlosa lisebelisoa tse sa amaneng le tse sa lokelang le lihlahisoa tse sa amaneng. Mohato oa ho qetela o omile le ho potlaka. Sehlahisoa sea omella ho laola mongobo oa mongobo, ebe o huleloa ho boholo bo loketseng ba karoloana ea ho fumana sehlahisoa se felileng hpmc.
2. Mofuta o futhumetseng
Tsamaiso ea kalafo ea kamora ho phekola e chesang le elt Hpmc e tšoana le ea hpmc ea metsi a batang. Leha ho le joalo, ka lebaka la mocheso o phahameng o sebelisoang ts'ebetsong ea karabelo, mongobo oa sehlahisoa o tlase ebile o le bonolo haholo. Ntle le moo, Hot-Melt Hpmc e hloka ho tsotella haholo mocheso o sithabetsang nakong ea ts'ebetso e sithabetsang ea ho thibela ho nyenyefatsa ts'ebetso ea sehlahisoa ka lebaka la mocheso o phahameng.
(4), ts'ebetso le ts'ebeliso
Hpmc ea metsi a batang ea HPMC e sebelisoa haholo masimong a hlokang ho beoa kapa ho ferekana ha mohanyetsi, emulsions, joalo ka lebaka la ho felisoa ha eona kapele. Litlhokahalo tsa eona tsa tlhahiso li phahame haholo, haholo-holo taolo ea maemo a ho etsa lintho tse tlase ka mocheso o tlase.
Hot-Melt Hpmc e loketseng haholoanyane bakeng sa maemo a mocheso a phahameng, joalo ka litlhare tsa mocheso, tse butsoiloeng, ka lebaka la alical ona hantle ka metsing a chesang. Ts'ebetso ea eona ea tlhahiso e bonolo haholo, empa e na le litlhokahalo tse bohloohong ba thepa e tala le taolo ea mocheso.
Phapang ea mantlha ts'ebetsong ea metsi a batang ea moea le chesang le ho chesa HPMC ka kotloloho ho Ts'ebetso ea Boitsebiso Mofuta oa lebala la moea oa ho bata o hloka ho arabela ka mocheso o tlase 'me o na le litlhokahalo tse phahameng bakeng sa ho hloeka ha lisebelisoa tse tala le taolo ea mocheso oa ho etsa. Ba babeli ba boetse ba fapane masimong a kopo ea kopo, 'me ka' ngoe e bapala karolo ea bohlokoa.
Poso: Hlakubele-17-2025