Iselulosiyeyona nxalenye iphambili yeendonga zeeseli zesityalo, kwaye yeyona polysaccharide isasazwe kakhulu kwaye ininzi kakhulu kwindalo, ibalelwa ngaphezulu kwe-50% yekhabhoni ekwindawo yezityalo. Phakathi kwabo, umxholo we-cellulose wekotoni usondele kwi-100%, owona mthombo we-cellulose wendalo ococekileyo. Ngokhuni ngokubanzi, i-cellulose i-akhawunti ye-40-50%, kwaye kukho i-10-30% ye-hemicellulose kunye ne-20-30% ye-lignin. I-Cellulose ether ligama eliqhelekileyo kwiintlobo ezahlukeneyo ze-derivatives ezifunyenwe kwi-cellulose yendalo njengento ekrwada nge-etherification. Yimveliso eyenziwe emva kokuba amaqela e-hydroxyl kwi-cellulose macromolecules athathwe ngokuyinxenye okanye ngokupheleleyo endaweni yamaqela e-ether. Kukho izibophelelo ze-intra-chain kunye ne-inter-chain ye-hydrogen kwi-cellulose macromolecules, ekunzima ukuyinyibilika emanzini kwaye phantse zonke izinyibilikisi zezinto eziphilayo, kodwa emva kwe-etherification, ukuqaliswa kwamaqela e-ether kunokuphucula i-hydrophilicity kunye nokwandisa kakhulu ukunyibilika kwamanzi kunye nezinyibilikisi eziphilayo. Iimpawu zokunyibilika.
I-ether ye-cellulose inegama elithi "industrial monosodium glutamate". Ineepropathi ezigqwesileyo ezinje ngokuqina kwesisombululo, ukunyibilika kakuhle kwamanzi, ukumiswa okanye ukuzinza kwe-latex, ukwenza ifilimu, ukugcinwa kwamanzi, kunye nokunamathela. Kananjalo ayinayo ityhefu kwaye ayinancasa, kwaye isetyenziswa ngokubanzi kwizinto zokwakha, amayeza, ukutya, iingubo, iikhemikhali zemihla ngemihla, ukuhlola i-petroleum, imigodi, i-papermaking, i-polymerization, i-aerospace kunye nezinye iindawo ezininzi. I-ether yeCellulose ineenzuzo zokusetyenziswa okubanzi, ukusetyenziswa kweyunithi encinci, isiphumo esihle sokuguqulwa, kunye nobuhlobo bendalo. Inokuphucula kakhulu kunye nokwandisa ukusebenza kwemveliso kwintsimi yokongezwa kwayo, ehambelana nokuphucula ukusetyenziswa kwezixhobo zokusebenza kunye nexabiso elongezelelweyo kwimveliso. Izongezo ezihambelana nokusingqongileyo eziyimfuneko kwiinkalo ezahlukeneyo.
Ngokutsho kwe-ionization ye-cellulose ether, uhlobo lwabaxumi kunye nokwahlukana kwe-solubility, i-cellulose ether ingahlelwa kwiindidi ezahlukeneyo. Ngokutsho kweentlobo ezahlukeneyo ze-substituents, i-cellulose ethers inokwahlulwa ibe yi-ether enye kunye ne-ethers edibeneyo. Ngokwe-solubility, i-ether ye-cellulose inokwahlulwa ibe yimveliso e-soluble yamanzi kunye ne-water-insoluble. Ngokutsho kwe-ionization, inokwahlulwa ibe yi-ionic, i-non-ionic kunye neemveliso ezixubileyo. Phakathi kwee-ether ze-cellulose ezinyibilikayo emanzini, ii-ether ze-cellulose ezingenayo i-ionic ezifana ne-HPMC zingcono kakhulu ukuxhathisa ubushushu kunye nokumelana netyuwa kune-ionic cellulose ethers (CMC).
Ingaba i-cellulose ether iphucula njani kushishino?
I-ether ye-cellulose yenziwe kwikotoni ecocekileyo ngokusebenzisa i-alkalization, i-etherification kunye namanye amanyathelo. Inkqubo yemveliso yebakala amayeza HPMC kunye nebakala ukutya HPMC ngokusisiseko iyafana. Xa kuthelekiswa ne-ether yokwakha ye-cellulose ether, inkqubo yokuvelisa i-HPMC ye-pharmaceutical-grade kunye nokutya-grade HPMC ifuna i-etherification ehleliweyo, eyinkimbinkimbi, enzima ukulawula inkqubo yokuvelisa, kwaye ifuna ukucoceka okuphezulu kwezixhobo kunye nokusingqongileyo kwemveliso.
Ngokutsho kwedatha enikezelwe yi-China Cellulose Industry Association, umthamo wemveliso we-non-ionic cellulose ether kunye nomthamo omkhulu wemveliso yasekhaya, njengeHercules Temple, iShandong Heda, njl., idlula i-50% yelizwe lonke umthamo wemveliso. Kukho abanye abavelisi be-ether abancinci be-non-ionic cellulose kunye nomthamo wokuvelisa ongaphantsi kweetoni ze-4,000. Ngaphandle kwamashishini ambalwa, uninzi lwawo luvelisa i-ethers ye-cellulose yemathiriyeli eqhelekileyo, enomthamo wemveliso omalunga ne-100,000 yeetoni ngonyaka. Ngenxa yokungabikho kwamandla emali, amashishini amancinci amaninzi awaphumeleli ukuhlangabezana nemigangatho yotyalo-mali lokukhuselwa kwendalo kunyango lwamanzi kunye nokukhupha unyango lwegesi ukwenzela ukunciphisa iindleko zokuvelisa. Njengoko ilizwe kunye noluntu lonke lunikela ingqalelo ngakumbi nangakumbi ekukhuselweni kwendalo, loo mashishini akwishishini angakwaziyo ukuhlangabezana neemfuno zokukhuselwa kwendalo aya kuvala ngokuthe ngcembe okanye anciphise imveliso. Ngelo xesha, ukuxinana kwishishini lelizwe lam lokuvelisa i-cellulose ether kuya kunyuka ngakumbi.
Imigaqo-nkqubo yokhuseleko lwasekhaya iya isiba ngqongqo ngakumbi, kwaye iimfuno ezingqongqo zibekwe phambili kubuchwephesha bokhuselo lokusingqongileyo kunye notyalo-mali kwinkqubo yokuvelisai-cellulose ether. Amanyathelo okukhusela okusingqongileyo akumgangatho ophezulu anyusa ixabiso lemveliso yamashishini kwaye enze umqobo ophezulu wokhuseleko lokusingqongileyo. Amashishini angakwaziyo ukuhlangabezana neemfuno zokhuseleko lwendalo esingqongileyo aya kuthi avalwe kancinci kancinci okanye acuthe imveliso ngenxa yokusilela ukufikelela kwimigangatho yokhuselo lokusingqongileyo. Ngokweprospectus yenkampani, amashishini athi ngokuthe ngcembe anciphise imveliso kwaye ayeke imveliso ngenxa yokhuseleko lokusingqongileyo anokubandakanya unikezelo lulonke olumalunga neetoni ezingama-30,000/ngonyaka wemathiriyeli yesiqhelo yokwakha i-cellulose ether, enceda ekwandiseni amashishini anenzuzo.
Ngokusekelwe kwi-ether ye-cellulose, iyaqhubeka nokwandisa kwiimveliso eziphezulu kunye nexabiso eliphezulu
Ixesha lokuposa: Apr-25-2024