Uhlolojikelele
I-Cellulose iyi-polymer yemvelo eyakhiwe amayunithi e-β-glucose anganahydrous, futhi inamaqembu amathathu e-hydroxyl iringi ngayinye yesisekelo.Ngokuguqula amakhemikhali e-cellulose, izinhlobonhlobo zokuphuma kwe-cellulose zingakhiqizwa, futhi enye yazo i-cellulose ether.I-Cellulose ether iyinhlanganisela ye-polymer enesakhiwo se-ether etholakala ku-cellulose, okuhlanganisa i-methyl cellulose, i-ethyl cellulose, i-hydroxyethyl cellulose, i-hydroxypropyl cellulose, i-carboxymethyl cellulose, nezinye.Lezi ziphuma zivame ukukhiqizwa ngokusabela i-alkali cellulose nge-monochloroalkane, i-ethylene oxide, i-propylene oxide, noma i-monochloroacetic acid.Umphumela we-cellulose ether unokuncibilika okuhle kakhulu kwamanzi, amandla okuqina, kanye nezakhiwo zokwakha ifilimu, futhi isetshenziswa kakhulu ezimbonini ezifana nezokwakha, ezemithi, ukudla, nezimonyo.I-Cellulose ether iyinto evuselelekayo, ebolayo, nengenabo ubuthi, okuyenza ibe enye indlela edumile kuma-polymer okwenziwa.
Ukusebenza kanye nezici
1. Izici zokubukeka
I-Cellulose ether iyimpushana emhlophe, engenaphunga, ene-fibrous emunca kalula umswakama futhi yakhe i-colloid ezinzile, ebonakalayo, ebonisa ngale lapho incibilika emanzini.
2. Ukwakhiwa Kwefilimu Nokunamathela
Ukuguqulwa kwamakhemikhali kwe-cellulose ukuze kukhiqizwe i-cellulose ether kuthinta kakhulu izakhiwo zayo, okuhlanganisa ukuncibilika kwayo, ikhono lokwenza ifilimu, amandla ebhondi, nokumelana nosawoti.Lezi zici zenza i-cellulose ether ibe i-polymer efiseleka kakhulu enamandla amakhulu okusebenza, ukuguquguquka, ukumelana nokushisa, nokumelana nokubanda.Ukwengeza, ikhombisa ukuhambisana okuhle nama-resin ahlukahlukene kanye nama-plasticizers, okuyenza ifanelekele ukusetshenziswa ekukhiqizeni amapulasitiki, amafilimu, ama-varnish, ama-adhesives, i-latex, nezinto zokumboza izidakamizwa.Ngenxa yezakhiwo zayo eziguquguqukayo, i-cellulose ether isiyinto ebalulekile embonini yokukhiqiza, ehlinzeka ngokusebenza okuthuthukisiwe, ukuzinza, nokuqina ezinhlobonhlobo zemikhiqizo.Ngenxa yalokhu, inohlu olubanzi lwezicelo emikhakheni eyahlukene, okuhlanganisa nemithi, okokuhlanganisa, izindwangu, ezokwakha, nezimboni zokudla, phakathi kokunye.
3. Ukuncibilika
Ukunyibilika kwama-cellulose ethers njenge-methylcellulose, i-methyl hydroxyethyl cellulose, i-hydroxyethyl cellulose, ne-sodium carboxymethyl hydroxyethyl cellulose kuyahlukahluka kuye ngezinga lokushisa ne-solvent esetshenzisiwe.I-Methylcellulose ne-methyl hydroxyethyl cellulose zincibilika emanzini abandayo nakwezinye izinyibilikisi eziphilayo kodwa zishona phansi uma ishisiwe, i-methylcellulose ishisa ku-45-60°C kanye ne-etherified etherified methyl hydroxyethyl cellulose ku-65-80°C.Nokho, imvula ingancibilika kabusha lapho izinga lokushisa lehliswa.Ngakolunye uhlangothi, i-hydroxyethyl cellulose ne-sodium carboxymethyl hydroxyethyl cellulose ancibilika emanzini kunoma yiliphi izinga lokushisa kodwa awancibiliki kuzincibilikisi zemvelo.Lawa ma-cellulose ethers anezindawo ezihlukene zokuncibilika kanye nemvula ezenza afanelekele ukusetshenziswa okuhlukahlukene ezimbonini ezinjengamapulasitiki, amafilimu, okokunamathela, nezinamatheliso.
4. Ukuqina
Lapho i-cellulose ether incibilika emanzini, yakha isixazululo se-colloidal esine-viscosity yayo ithonywa izinga le-polymerization ye-cellulose ether.Isixazululo siqukethe ama-hydrated macromolecules abonisa ukuziphatha okungeyona eye-Newtonian, okungukuthi, ukushintsha kokuziphatha kokugeleza kusetshenziswe amandla okugunda.Ngenxa yesakhiwo se-macromolecular, i-viscosity yesisombululo ikhula ngokushesha ngokugxila, kodwa iyancipha ngokushesha ngokukhuphuka kwezinga lokushisa.I-viscosity yezixazululo ze-cellulose ether nayo ithonywa yi-pH, amandla e-ionic, kanye nokuba khona kwamanye amakhemikhali.Lezi zakhiwo eziyingqayizivele ze-cellulose ether ziyenza ibe wusizo ekusetshenzisweni okuhlukahlukene njengezinamathelisi, okokunamathela, izimonyo, nemikhiqizo yokudla.
Isicelo
1. Imboni kawoyela
I-sodium carboxymethyl cellulose (i-NaCMC) iyi-ether ye-cellulose enezinhlobonhlobo zezinhlelo zokusebenza zenqubo yokukhipha uwoyela.Izakhiwo zayo ezinhle kakhulu zokwandisa i-viscosity nokunciphisa uketshezi ziyenza ibe yintandokazi kuketshezi lokumba, uketshezi lukasimende, noketshezi oluphukayo.Ikakhulukazi, ibonise imiphumela ethembisayo ekuthuthukiseni ukubuyiswa kwamafutha.I-NaCMC ingamelana nokungcola okuhlukahlukene kukasawoti oncibilikayo futhi yandise ukutholakala kukawoyela ngokunciphisa ukulahleka kwamanzi, futhi ukumelana kwawo nosawoti kanye nekhono elikhulayo le-viscosity kuyenza ilungele ukulungiselela uketshezi lokumba lwamanzi ahlanzekile, amanzi olwandle, namanzi anosawoti agcwele.
I-sodium carboxymethyl hydroxypropyl cellulose (NaCMHPC) kanye ne-sodium carboxymethyl hydroxyethyl cellulose (NaCMHEC) yizinto ezimbili eziphuma ku-cellulose ether ezinezinga eliphezulu lokujiya, ukusebenza kahle kwe-anti-calcium, kanye nekhono elihle lokukhulisa i-viscosity, okubenza babe izinqumo ezinhle kakhulu njengama-ejenti okumba udaka nezinto zokwakha. ukulungiselela uketshezi lokuqeda.Babonisa ikhono eliphakeme kakhulu lokukhulisa i-viscosity kanye nezakhiwo zokunciphisa uketshezi nokulahlekelwa uketshezi uma kuqhathaniswa ne-hydroxyethyl cellulose, futhi ikhono labo lokwenziwa libe uketshezi lokumba lokuminyana okuhlukahlukene ngaphansi kwesisindo se-calcium chloride libenza babe isithasiselo esiguquguqukayo sokwandisa ukukhiqizwa kukawoyela.
IHydroxyethyl cellulose (HEC) ingenye ephuma ku-cellulose esetshenziswa njenge-ejenti yokuqinisa udaka kanye ne-ejenti yokusimamisa lapho kubholwa, ukuqedwa, kanye nenqubo yokufaka usimende.Uma kuqhathaniswa ne-sodium carboxymethyl cellulose ne-guar gum, i-HEC inokumiswa kwesihlabathi okuqinile, umthamo omkhulu kasawoti, ukumelana nokushisa okuhle, ukumelana nokuxuba okuphansi, ukulahlekelwa okuncane koketshezi, kanye ne-gel breaking block.I-HEC isetshenziswe kabanzi ngenxa yomphumela wayo omuhle wokujiya, izinsalela eziphansi, nezinye izakhiwo.Sekukonke, ama-cellulose ethers afana ne-NaCMC, i-NaCMHPC, i-NaCMHEC, ne-HEC idlala indima ebalulekile enqubweni yokukhipha uwoyela futhi abonise amandla abalulekile ekuthuthukiseni ukubuyiswa kukawoyela.
2. Imboni Yokwakha Nokupenda
I-sodium carboxymethyl cellulose iyisengezo sempahla yokwakha eguquguqukayo engasetshenziswa njenge-retarder, i-ejenti yokugcinwa kwamanzi, i-thickener kanye ne-binder yokwakha amatshe kanye nodaka lokuplasta.Ingasetshenziswa futhi njenge-dispersant, i-ejenti egcina amanzi kanye ne-thickener yokufaka ukhonkolo, udaka kanye nezinto zokulinganisa umhlabathi.Ingxube ekhethekile ye-masonry kanye ne-plastering mortar eyenziwe nge-carboxymethyl cellulose ingathuthukisa ukusebenza, ukugcinwa kwamanzi kanye nokumelana nokuqhekeka, ukugwema ukuqhekeka kanye nama-voids odongeni lwe-block.Ngaphezu kwalokho, i-methyl cellulose ingasetshenziswa ukwenza izinto zokuhlobisa indawo yokwakha evumelana nemvelo yodonga olusezingeni eliphezulu kanye nezindawo zamathayela wamatshe, kanye nokuhlobisa phezulu kwamakholomu nezikhumbuzo.
3. Daily Chemical Industry
I-sodium carboxymethyl cellulose iyi-viscosifier eyenza izinto eziningi zizinze engasetshenziswa emikhiqizweni eyahlukene.Emikhiqizweni yokunamathisela equkethe izinto ezingavuthiwe eziyimpuphu eqinile, idlala indima ebalulekile ekuhlakazweni nasekuqiniseni ukumiswa.Okwezimonyo eziwuketshezi noma ze-emulsion, zisebenza njenge-ejenti yokuqina, ehlakazayo, ne-homogenizing.Lokhu okuphuma ku-cellulose kungase futhi kusebenze njenge-emulsion stabilizer, amafutha okugcoba kanye ne-shampoo thickener ne-stabilizer, i-toothpaste adhesive stabilizer, kanye ne-detergent thickener kanye ne-anti-stain agent.I-sodium carboxymethyl hydroxypropyl cellulose, uhlobo lwe-cellulose ether, isetshenziswa kakhulu njengesiqinisi sokuxubha amazinyo ngenxa yezakhiwo zayo ze-thixotropic, esiza ukugcina ukubumba nokuvumelana kwe-toothpaste.Lokhu okuphuma kokunye akukwazi ukumelana nosawoti kanye ne-asidi, okuyenza ibe ukuqina okunamandla ezintweni zokuhlanza kanye nama-anti-stain agents.I-sodium carboxymethyl cellulose ijwayele ukusetshenziswa njenge-dipersant, thickener, kanye ne-disperant ekukhiqizeni impushana yokuwasha kanye nezihlanzi eziwuketshezi.
4. Imboni Yezokwelapha Nokudla
Embonini yezemithi, i-Ibang hydroxypropyl carboxymethylcellulose (HPMC) isetshenziswa kakhulu njengesithako somuthi ekukhishweni okulawulwayo ngomlomo kanye namalungiselelo okukhululwa okuqhubekayo.Isebenza njengento ebambezela ukukhululwa ukuze ilawule ukukhishwa kwezidakamizwa, futhi njengento yokumboza ukubambezeleka ukukhululwa kokwakheka.I-Methyl carboxymethyl cellulose ne-ethyl carboxymethyl cellulose zivame ukusetshenziselwa ukwenza amaphilisi namaphilisi, noma ukumboza amaphilisi ambozwe ngoshukela.Embonini yokudla, i-premium grade cellulose ethers ayizingqimba ezisebenzayo, iziqinisi, izisiza, ama-ejenti okugcina amanzi kanye nama-foam agent e-mechanical ekudleni okuhlukahlukene.I-Methylcellulose ne-hydroxypropylmethylcellulose kubhekwa njenge-inert ye-metabolically futhi kuphephile ukusetshenziswa.I-high-purity carboxymethylcellulose ingafakwa emikhiqizweni yokudla, okuhlanganisa ubisi nokhilimu, izinongo, ujamu, ijeli, ukudla okusemathinini, isiraphu yetafula neziphuzo.Ukwengeza, i-carboxymethyl cellulose ingasetshenziswa ekuthuthweni nasekugcinweni kwezithelo ezintsha njengendlela yokugoqa ipulasitiki, inikeze umphumela omuhle wokugcina uhlanzekile, ukungcola okuncane, akukho monakalo, nokukhiqiza kalula ngemishini.
5. Izinto ezisebenzayo ze-Optical and Electrical
I-high-purity cellulose ether ene-asidi enhle nokumelana nosawoti isebenza njenge-electrolyte thickening stabilizer, inikeza izici ezizinzile ze-colloidal zamabhethri e-alkaline ne-zinc-manganese.Amanye ama-cellulose ether abonisa i-thermotropic liquid crystallinity, njenge-hydroxypropyl cellulose acetate, eyenza amakristalu oketshezi e-cholesteric angaphansi kuka-164°C.
Inkomba Eyinhloko
● Isichazamazwi Sezinto Zekhemikhali.
● Izici, ukulungiswa kanye nokusetshenziswa kwezimboni kwe-cellulose ether.
● Isimo Esikhona Nendlela Yokuthuthukiswa Kwemakethe Ye-Cellulose Ether.
