Ho hlophisa karolo ea bohlokoa ho ntlafatsa ts'ebetso ea seretse se fapaneng se sehiloeng, empa ho eketsoa seretse se fapaneng se ommeng haholo, e bakang seretse sa setso se fetang 40% ea Lintho tse theko e boima ka seretse se fapaneng se ommeng. Hajoale, karolo e ngata ea ho amoheloa ke baetsi ba kantle ho naha, mme katleho ea sehlahisoa e boetse e fanoa ke mofani oa thepa. Ka lebaka leo, litšenyehelo tsa lihlahisoa tsa sejalo tsa semela se omileng li lula li le holimo, 'me ho thata ho hlaha masara a makatsang le libakeng tse ngata; Lihlahisoa tsa 'maraka oa' maraka o phahameng li laoloa ke lik'hamphani tsa kantle, le bahlahisi ba sejalo ba semela se omileng ba na le phaello e tlase le mamello e fosahetseng ea theko; Ho na le lipatlisiso tse hlophisehileng le tse shebiloeng mabapi le ts'ebeliso ea meriana, 'me mekhoa ea kantle e lateloa ka mofuthu.
Ho latela mabaka a kaholimo, pampiri ena e bakang lipampiri tsa mantlha tsa litlatsetso tse sebelisoang haholo, 'me motheong ona, ithute lipatlisiso tsa li-amix tse omileng.
1. Metsi a boloka moemeli
Mehlamiti ea metsi ke lengolo la bohlokoa la ho lokisa metsi ea seretse se tsoakaneng, 'me hape ke e' ngoe ea lingoloa tsa thepa ea seretse sa seretse se fapaneng se ommeng.
1.1 Cellulose Ether
Cellulose Ether ke polelo e akaretsang bakeng sa letoto la lihlahisoa tse hlahisoang ke karabelo ea alkali cellular le moemeli ea iphetetsang tlasa maemo a itseng. Alkali Cellilose e nkeloa sebaka ke li-egerts tse fapaneng tsa masholu ho fumana bo-Ethen e fapaneng ea cellulose. Ho latela lits'oants'o tsa li-iinization tsa tse nkang karolo, etheria ea celluulo Lae-rang e ka aroloa ka mekhahlelo e 'meli: ionic (e kang celbolosese) le e seng ionilose (joalo ka nna celbelose). Ho latela mofuta oa mofuta oa Ether other o ka aroloa ho mothyer Ho latela qubu e fapaneng, e ka aroloa ka seluloa metsi (joalo ka hydroxethyl cellulose) le selefouno ea Ethyl E arotsoe ka mofuta oa Instani le bokaholimo bo ile ba tšoaroa ke mofuta oa discolotion.
Mochine oa ketso ea cellulose ether ka seretse se etsoang ke seretse se latelang:
(1) Kamora hore mpa e tšoarellang ea selefoui e felisoa ka metsing, e sebetsang ea thepa e sa tloaelehang tsamaisong e hlahisoang ka lebaka la ho ikoahlaea, "e tiisitse" e tiileng Likarolo le ho thehoa filimi ea libapali tse ka ntle, tse etsang hore tsamaiso ea seriti e tsitsitse, hape e ntlafalitse phokotso ea seretse nakong ea ho kopanya le ho boreleli ha ho kopanya le ho fokola ha ho hahoa.
.
1.1.1 molecular formanlas contsyl cellulolose (MC) [MC) [MC) 3-H (Och3) n] x
Kamora k'hothone e ntlafalitsoeng e phekoloa ka alkali, etherlosel ether e hlahisoa ka tatellano ea methane chloride e le moemeli oa matlo. Ka kakaretso, tekanyo ea sebaka ke 1.6 ~ 2.0, mme tharollo e boetse e fapana le likhato tse fapaneng tsa sebaka. Ke ea No-Ioni ea Ioni ea Ioni e mother.
(1) MethylceLulose e qhibiliha ka metsing a batang, 'me ho tla ba thata ho li hlakola metsing a chesang. Tharollo ea eona e halefileng e tsitsitse haholo maemong a ph = 3 ~ 12. E lumellana hantle le starch, gour gum, jj. Ha mocheso o fihla mochesong oa botloho, arena e hlaha.
(2) Ho boloka metsi ka metsi a methyl ka ponaleulow Ka kakaretso, haeba palo ea chelete e kholo, setlamo se 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 ho fetisisa ho boloka metsi, 'me boemo ba pono ha bo lekane ka kotloloho boemong ba ho boloka metsi. Sekhahla sa disfototion se its'etleha haholo ho latela tekanyo ea phetoho ea mantlha ea likaroloana tsa cellulose le bophahamo. Har'a Ethe ea selefouso e kholo ea selefouso, Methyl Cllluke le HydroxypropyL Methyl Celdulose e na le litheko tse phahameng tsa metsi.
(3) Liphetoho ka mocheso li tla ama sekhahla sa ho boloka metsi a methyl hampe. Ka kakaretso, thempereichara e phahame ka ho fetisisa ho boloka metsi. Haeba mocheso oa seretse o le holimo ho 40 ° C, boloi ba metsi ba methyl ba fokotsehile haholo, ho ama ka matla kaho ea seretse.
(4) Ceblulose e na le phello e kholo ho kaho le ho tšoarela. "Ho ba le moea ona" mona ho bua ka matla a khokhothetsoeng ho ne ho utloahala pakeng tsa sesebelisoa sa mohiruoa le leboteng subano ea seretse. Hod'eno e phahame, ke tšoso ea seretse ea seretse e kholo le eona matla a ts'ebeliso ea seretse a futsanehile. Khoele ea Methyl
1.1.2 Foromo ea li-molecular ea hydroxypropyLe (hpmc)
Hydroxypropypropyproping Methylcelulose ke mefuta e fapaneng ea cellulose eo tlhahiso le ts'ebeliso ea tsona e ntseng e eketseha ka potlako lilemong tsa morao tjena. Ke cellulose e sa khetholloang e entsoeng ka k'hothone e sa tsoakoang kamora ho sebelisana, le methyl chloride e le methyl. Degree of karolelano hangata ke 1.2 ~ 2.0. Thepa ea eona e fapane ka lebaka la karolelano e fapaneng ea mekhoa ea mekhoa ea mekhoa le litaba tsa hydroxypropyl.
(1) HydroxypropyproppyL methylceluselose e qhibiliha habonolo ka metsing a batang, 'me e tla tobana 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. Khoele ka metsing a batang e boetse e ntlafalitsoe haholo ho bapisa le methyl cellulose.
. Mocheso o ama pono ea oona, joalo ka ha mocheso oa eketseha, Viscostory ea fokotseha. Leha ho le joalo, liketsahalo tsa eona tse phahameng li na le matla a mocheso ho feta methyl cellulose. Tharollo ea eona e tsitsitse ha e bolokoa ka mocheso oa kamore.
.
. Cadance Soda le Metsi a lime ha li na phello e nyane ts'ebetsong ea eona, empa Alkali a ka potlakisa ho qhibiliha ha eona le ho eketsa pono ea eona. HydroxypropypropinprofonyLese e tsitsitseng, empa ha tharollo ea letsoai e phahame, viccosion of hydroxypropy tharollo ea ho eketseha.
(5) Hydroxypropypropyly Methylcelulose e ka tsoakoa ka metsoako ea polymer ea metsi ho theha tharollo e tšoanang le e phahameng ea pono. Joalo ka polyvinyl joala, starch ether, leqhubu la meroho, jj.
.
.
1.1.3 hydroxethylcelldoulose (hec)
E entsoe ka k'hothone e hloekisitsoeng e phekotsoeng le Alkali, 'me e ile ea amohela oxide ea ethineneng e le moemeli ea nang le lebaka la Acetone. Karolo ea sebaka seo ka kakaretso e 1.5 ~ 2.0. E na le hydrophphilicity e matla 'me ho bonolo ho amohela mongobo.
(1) Hydroxethyl conlloulose e qhibilihang ka metsing a batang, empa ho thata ho li hlakola metsing a chesang. Tharollo ea eona e tsitsitse mochesong o phahameng o se nang mohono. E ka sebelisoa nako e telele tlasa mocheso o phahameng o seretse, empa ho otla ha eona metsi ho tlase ho feta oa methyl cellulose.
(2) Hydroxethyl clloulose e tsitsitse ho tloaelehileng acid le alkali. Alkali a ka potlakisa ho qhalana ha eona mme o eketsa pono ea eona hanyane. Ho senyeha ha eona hanyane ho hobe hanyane ho feta oa methyl cellulolose le hydroxypropyproppyl methyl celbelose. .
.
.
1.1.4 carboxexethylcellilose (cmc) [c1h7o2 (OH) 2Och2Coona] n
Iolic cellulose e entsoe ka likhoele tsa tlhaho (k'hothone, jj.) Kamora kalafo ea Alkali Tekanyo ea sebaka hangata e ka sebelisoa ka makhetlo a 0,4 ~ 1.4, 'me ts'ebetso ea eona e anngoe ke boemo ba eona.
(1) celboxeMethyl Cellulose ea Hygroscopic, 'me e tla ba le metsi a mangata ha e bolokiloe tlasa maemo a akaretsang.
. Ha mocheso o feta ho 50 ° C, viscooty e ke ke ea fetoloa.
(3) Ho tsitsa ha eona ho angoa haholo ke pH. Ka kakaretso, e ka sebelisoa seretse sa Gypsum, empa eseng seretse se thehiloeng sammente. Ha alkanaline haholo, e lahleheloa ke liketsahalo.
(4) Ho boloka metsi a eona ho tlase haholo ho feta sa mumthyl cellulose. E na le phello ea seretse se bulehileng sa Gyptum ebe e fokotsa matla a eona. Leha ho le joalo, theko ea celboxexethyl cellulose e tlase haholo ho feta ea Mileyl Cleloulose.
Nako: Mar-30-2023