1. Aotelega:
O le cellulose ether o se polymer masani, o lona fausaga kemikolo o se polysaccharide macromolecule e faʻavae i luga o le anhydrous β-glucose, ma e tasi le vaega muamua o le hydroxyl ma le lua lua hydroxyl vaega i luga o mama faavae taʻitasi.E ala i le fesuiaiga o vailaʻau, e mafai ona maua se faasologa o mea e maua mai i le cellulose, ma o le cellulose ether o se tasi oi latou.Cellulose ether o se polymer compound ma se fausaga ether e faia i le cellulose, e pei o le methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, ma isi. E masani lava, e mafai ona maua i le gaioiga o le alkali cellulose ma monochloroalkane, ethylene oxide , propylene oxide poʻo le monochloroacetic acid.
2. Fa'atinoga ma Fa'ailoga:
(1) Fa'aaliga foliga
O le cellulose ether e masani ona pa'epa'e po'o le susu papa'e, e leai se manogi, e le o'ona, efuefu fibrous pauta, e faigofie ona mitiia le susu, ma solo i totonu o se colloid mautu viscous manino i le vai.
(2) Fausia ata tifaga ma pipii
O le etherification o le cellulose ether o loʻo i ai se aafiaga tele i ona uiga ma le faʻatinoga, e pei o le solubility, ata-fausia gafatia, malosi faʻamau ma le masima tetee.O le cellulose ether e maualuga le malosi o le masini, fetuutuunai, vevela ma le malulu, ma e lelei le fetaui lelei ma resini eseese ma plasticizers, ma e mafai ona faʻaaogaina e fai ai palasitika, ata tifaga, varnishes, faʻapipiʻi, latex ma vailaʻau faʻapipiʻi mea, ma isi.
(3) Solubility
Methylcellulose e soluble i vai malulu, e le mafai ona solu i vai vevela, ma soluble foi i nisi solvents organic;methyl hydroxyethyl cellulose e solu i le vai malulu, e le mafai ona solu i vai vevela ma solu faʻalaʻau.Ae peita'i, a fa'avevela le vaifofo o le methylcellulose ma le methylhydroxyethylcellulose, o le a fa'afefete le methylcellulose ma le methylhydroxyethylcellulose.Methylcellulose precipitates i le 45-60°C, ae o le vevela vevela o fefiloi etherified methyl hydroxyethyl cellulose faateleina i le 65-80°C.Pe a faʻaititia le vevela, e toe faʻamaʻapeʻa le paʻu.Hydroxyethyl cellulose ma le sodium carboxymethyl hydroxyethyl cellulose e solu i le vai i so'o se vevela ma e le mafai ona solu i so'o so'o.
(4) mafiafia
O le cellulose eter e solo i totonu o le vai i le colloidal form, ma o lona viscosity e faalagolago i le tikeri o le polymerization o le cellulose ether.O le vaifofo o loʻo i ai macromolecules faʻamamaina.Ona o le lavelave o macromolecules, o le tafega o vaifofo e ese mai le vai o Newtonian, ae o loʻo faʻaalia ai se amio e suia i suiga i le malosi o le shear.Ona o le macromolecular structure o le cellulose ether, o le viscosity o le fofo e faʻateleina vave i le faʻateleina o le faʻatonuga ma faʻaitiitia vave i le faʻateleina o le vevela.
Fa'aaogāga
(1) Alamanuia suau'u
Sodium carboxymethyl cellulose e masani ona faʻaaogaina i le suauʻu suauʻu, ma e faʻaaogaina i le gaosiga o palapala e faʻateleina ai le viscosity ma faʻaitiitia ai le vai.E mafai ona tete'e eseese soluble masima filogia ma faateleina le toe faaleleia suauu.Sodium carboxymethyl hydroxypropyl cellulose (NaCMHPC) ma le sodium carboxymethyl hydroxyethyl cellulose (NaCMHEC) o mea lelei e viliina ai le palapala ma mea mo le sauniaina o vai faʻamaeʻaina, faʻatasi ai ma le maualuga o le slurrying ma le masima, Lelei le faʻaogaina o le calcium, lelei le faʻaleleia o le malosi, faʻaleleia le vevela. (160 ℃) meatotino.E fetaui lelei mo le tapenaina o vai e viliina mo vai fou, vai o le sami ma vai masima tumu.E mafai ona faʻapipiʻiina i vai eliina o densities eseese (103-127g / cm3) i lalo o le mamafa o le calcium chloride, ma o loʻo i ai se viscosity patino ma maualalo le suavai gau, o lona viscosity-faʻateleina le gafatia ma le gau o le suavai faʻaitiitia le gafatia e sili atu nai lo le hydroxyethyl cellulose. , ma o se faʻaopoopoga lelei mo le faʻateleina o le gaosiga o suauʻu.
Sodium carboxymethyl cellulose o se cellulose derivative masani faʻaaogaina i le faagasologa o le suauʻu suauʻu.E faʻaaogaina i le suauʻu viliina, sima sua, gau gau ma faʻaleleia le toe faʻaleleia o le suauʻu, aemaise lava ile sua suauʻu.E masani lava ona faia le matafaioi o le faʻaitiitia o le suavai gau ma faʻateleina le viscosity.O le Hydroxyethyl cellulose (HEC) o lo'o fa'aaogaina e avea o se palapala mafiafia ma fa'amautu i le faagasologa o le viliina, fa'amae'aina lelei ma le sima.Pe a faatusatusa i le sodium carboxymethyl cellulose ma le guar gum, o le hydroxyethyl cellulose e iai sona aafiaga mafiafia lelei, malosi malosi o le oneone, maualuga le masima, malosi lelei o le vevela, laʻititi faʻafefiloi, faʻaitiitia le suavai, ma le gau o gel.Poloka, maualalo toega ma isi uiga, ua faʻaaogaina lautele.
(2) Faufale ma fale vali
Sodium carboxymethyl cellulose e mafai ona faʻaaogaina e fai ma mea faʻafefe, vai faʻamauina, mafiafia ma fusifusia mo le fausiaina o masonry ma faʻapipiʻiina o mea faʻafefiloi, ma e mafai ona faʻaaogaina e pei o le sima, sima ma mea e faʻaleleia ai le eleele mo le gypsum base ma le sima E faʻaaogaina e pei o le faʻasalalau, vai. e fa'atumauina ma mafiafia.O se masonry faʻapitoa ma faʻapipiʻi paluga faʻafefiloi e faia i le carboxymethyl cellulose, lea e mafai ona faʻaleleia ai le faʻaogaina, faʻamauina o le vai ma le faʻafefeteina o le sima, ma aloese mai le taʻe ma le gaogao i le puipui poloka.talipalau.O mea faufale faufale o Cao Mingqian ma isi na faia se mea e fa'alelei ai luga o le fale mai le methyl cellulose.E faigofie ma mama le faagasologa o le gaosiga.E mafai ona faʻaaogaina mo puipui maualuga ma luga o maʻa maʻa, ma e mafai foi ona faʻaogaina mo teuteuga luga o koluma ma maa faamanatu.
(3) Alamanuia kemikolo i aso taitasi
O le stabilizing viscosifier sodium carboxymethyl cellulose o loʻo taʻalo i le taʻapeʻapeina ma le faʻamautu faʻamautu i oloa faʻapipiʻi o mea faʻapipiʻi paʻu paʻu, ma taʻalo le matafaioi o le mafiafia, faʻasalalau ma homogenizing i le vai poʻo le emulsion cosmetics.E mafai ona faʻaaogaina e fai ma faʻamautu ma tackifier.Emulsion stabilizers e faʻaaogaina e fai ma emulsifiers, mafiafia ma faʻamautu mo suauu ma shampoos.Sodium carboxymethyl hydroxypropyl cellulosee mafai ona faʻaaogaina e fai ma faʻamautu mo mea faʻapipiʻi toothpaste.O lo'o i ai mea lelei thixotropic, lea e lelei ai le toothpaste i le fa'aogaina, teuina mo se taimi umi e aunoa ma le fa'aleagaina, ma le tofo ma le maaleale.Sodium carboxymethyl hydroxypropyl cellulose e sili atu le masima masima ma acid resistance, ma o lona aafiaga e sili mamao atu nai lo le carboxymethyl cellulose.E mafai ona faʻaaogaina e avea o se mafiafia i vailaʻau faʻamaʻi ma se mea e faʻafefe ai le pisia.Faʻasalalau faʻasalalau i le gaosiga o vailaʻau, sodium carboxymethylcellulose e masani ona faʻaaogaina e avea o se palapala palapala mo le fufuluina o le paʻu, o se mafiafia ma se faʻasalalauga mo vai faʻafefe.
(4) Fa'afomai ma mea'ai
I totonu o fale talavai, hydroxypropyl carboxymethylcellulose (HPMC) e mafai ona faʻaaogaina e avea o se vailaʻau faʻamalositino, faʻaaogaina lautele i le tuʻuina atu o vailaʻau faʻamaʻi faʻamaʻi faʻamaʻi ma sauniuniga faʻasaʻo tumau, e avea o se mea e faʻasaʻo ai mea e faʻatonutonu ai le tuʻuina atu o vailaʻau, e fai ma mea faʻapipiʻi e faʻatuai ai le Faʻamalolo. fa'apipi'i, pelleti fa'alaua'itele, kapoti fa'alaua'itele.O le mea e sili ona faʻaaogaina o le methyl carboxymethyl cellulose ma le ethyl carboxymethyl cellulose, e pei o le MC, lea e masani ona faʻaogaina e fai ai papa ma capsules, poʻo le faʻaofuina o papa e ufiufi ai le suka.E mafai ona faʻaaogaina le cellulose ethers sili ona lelei i totonu o meaʻai, ma e lelei le mafiafia, faʻamautu, mea e faʻaogaina ai, vai faʻamauina sui ma masini faʻafefe i meaʻai eseese.Methyl cellulose ma le hydroxypropyl methyl cellulose ua iloa o ni mea e le afaina ai le tino.Ole mama maualuga (i luga aʻe o le 99.5%) carboxymethylcellulose (CMC) e mafai ona faʻaopopo i meaʻai, e pei o susu ma kulimi oloa, mea manogi, jams, jelly, meaʻai apa, sirup laulau ma meainu.Carboxymethyl cellulose ma le mama o le sili atu i le 90% e mafai ona faʻaaogaina i mea e faʻatatau i meaʻai, e pei o le felauaiga ma le teuina o fualaau aina fou.O lenei ituaiga o afifi palasitika ei ai le lelei o le lelei fou-tausia aafiaga, itiiti le filogia, leai se faaleagaina, ma faigofie gaosiga masini.
(5) Mea fa'aoga fa'apitoa ma eletise
Electrolyte thickening stabilizer ei ai le mama maualuga o le cellulose ether, tetee acid lelei ma masima tetee, aemaise lava le maualalo o le uʻamea ma le mamafa o mea uamea, o lea o le colloid e matua mautu, talafeagai mo maa alkaline, maa zinc-manganese Electrolyte thickening stabilizer.Ole tele ole cellulose ethers o lo'o fa'aalia ai le tioata vai tioata vevela.O le Hydroxypropyl cellulose acetate e fa'atūina ai tioata vai cholesteric thermotropic i lalo ole 164°C.
Taimi meli: Ian-12-2023