Cellulose etherho boloka metsi
Ho boloka metsi a seretse ho bolela bokhoni ba seretse ho tšoara le ho notlela metsi. Ha viscosity ea cellulose ether e phahame, ho boloka metsi ho betere. Hobane sebopeho sa cellulose se na le bond ea hydroxyl le ether, hydroxyl le sehlopha sa bond ea ether ea liathomo tsa oksijene le limolek'hule tsa metsi ho etsa bond ea haedrojene, e le hore metsi a sa lefelloeng a kene ka har'a metsi a tlamang, a matsoelintsoeke, e le ho bapala karolo ea ho boloka metsi.
Ho qhibiliha ha cellulose ether
1. The coarser cellulose ether e bonolo ho qhalakana ka metsing ntle le agglomerating, empa sekhahla sa ho qhibiliha se lieha haholo. Cellulose ether e ka tlase ho 60 mesh e qhibiliha ka metsing ka metsotso e ka bang 60.
2. Likaroloana tse ntle tsa cellulose ether ka metsing li bonolo ho qhalakana 'me ha li kopane,' me tekanyo ea ho qhibiliha e leka-lekane. Cellulose ether e fetang 80 mesh e qhibilihisitsoeng ka metsing ka metsotso e ka bang 3.
3. Ultrafine cellulose ether e hasana ka potlako metsing, e qhibiliha ka potlako 'me e theha viscosity e potlakileng. Cellulose ether ka holimo ho 120 mesh e qhibiliha ka metsing ka metsotsoana e ka bang 10-30.
Ha likaroloana tsa cellulose ether li le ntle, ho boloka metsi ho betere, likaroloana tse mahoashe tsa ether ea cellulose le bokaholimo ba metsi li ile tsa qhibiliha hang-hang 'me tsa theha ketsahalo ea gel. Sekhomaretsi se thatela lintho ho thibela limolek'hule tsa metsi ho tsoela pele ho phunyeletsa. Ka linako tse ling, esita le haeba e tsosoa ka nako e telele, tharollo e ke ke ea qhalakanngoa ka mokhoa o ts'oanang le ho qhibiliha, ho etsa tharollo e seretse ea flocculent kapa agglomerate. Likaroloana tse ntle lia qhalana le ho qhalana hang-hang ha li kopana le metsi ho etsa viscosity e tšoanang.
PH boleng ba cellulose ether (coagulation e liehang kapa matla a pele)
Boleng ba PH ba baetsi ba cellulose ether lapeng le kantle ho naha bo laoloa ke hoo e ka bang 7, e leng asiti. Hobane ho sa ntsane ho e-na le mohaho o mongata oa lesale la tsoekere e senyehileng ka har'a sebopeho sa limolek'hule tsa cellulose ether, selikalikoe sa tsoekere se senyehileng ke sehlopha se seholo se bakang tieho ea samente. Lesale la tsoekere le nang le metsi a mangata le ka etsa li-ion tsa calcium ka har'a tharollo ea samente ea hydration ho theha metsoako ea limolek'hule tsa tsoekere ea calcium, ho fokotsa khatello ea calcium ion nakong ea ho kenya samente, ho thibela ho theoa le pula ea likristale tsa calcium hydroxide le calcium letsoai, ka hona ho liehisa tšebetso ea samente hydration. Haeba boleng ba PH bo fetoha boemo ba alkaline, seretse se tla hlaha boemo ba pele ba matla. Hona joale boholo ba lifeme ho fetola boleng ba PH sebelisa sodium carbonate, sodium carbonate ke mofuta oa accelerating moemeli, sodium carbonate ka ntlafatsa tshebetso ya samente phatsa holim'a, susumelletsa momahaneng pakeng tsa likaroloana eketseha, ka ho eketsehileng ntlafatsa viscosity ea slurry, seretse le sodium carbonate le k'halsiamo ion motsoako ka potlako, susumelletsa ho thehoa ha ettringite, condenation ka potlako. Ka hona, boleng ba PH bo lokela ho fetoloa ho latela bareki ba fapaneng ts'ebetsong ea 'nete ea tlhahiso.
Ho kenngoa ha khase ea cellulose ether
The moea entraining ea selulose ether ke haholo-holo hobane selulose ether e boetse ke surfactant, tshebetso segokanyimmediamentsi sa sebolokigolo ether haholo-holo hlaha ka segokanyimmediamentsi sa sebolokigolo-tiileng, ea pele ke selelekela sa bubble, e lateloa ke hasane le wetting. Cellulose ether e na le sehlopha sa alkyl, haholo fokotsa tsitsipano holim'a metsi le interfacial eneji ea metsi, tharollo ea metsi nakong ea pherekano ke ho le bonolo ho hlahisa tse ngata tse nyenyane tse koetsoeng bubble.
Ho kenngoa ha cellulose ether
Cellulose ether e qhibilihisoa ka seretse ka lebaka la ketane ea eona ea limolek'hule tsa methoxy le hydroxypropyl sehlopheng se slurry se nang le li-ion tsa khalsiamo le li-ion tsa aluminium ha ho etsoa li-gels tsa viscous le ho tlatsoa ka lekhalo la seretse sa samente, ho ntlafatsa ho teteana ha seretse, ho phetha karolo ea ho tlatsa le ho matlafatsa. Leha ho le joalo, ha matrix a kopantsoeng a hatelloa, polymer e ke ke ea bapala tšehetso e thata, kahoo matla le tekanyo ea khatello ea seretse e fokotseha.
Sebopeho sa filimi eacellulose ether
Filimi e tšesaane ea latex e thehoa pakeng tsa cellulose ether le likaroloana tsa samente ka mor'a hore ho be le metsi. Filimi e na le phello ea ho tiisa 'me e ntlafatsa boemo bo omeletseng ba seretse. Hobane cellulose ether e na le ho boloka metsi hantle, ho boloka limolek'hule tse lekaneng tsa metsi ka hare ho seretse, kahoo ho tiisa matla a samente hydration le ho thatafala le ntshetsopele ka ho feletseng, ho ntlafatsa matla a bonding ea seretse, ka nako e ts'oanang ho ntlafatsa ho khomarela ha seretse sa samente, seretse se na le polasetiki e ntle le toughness, fokotsa seretse contraction deformation.
Nako ea poso: Apr-26-2024