I-Hydroxyethyl cellulose (HEC), i-cellulose emhlophe okanye ekhanyayo, engenavumba, i-non-toxic fibrous okanye i-powdery solid, elungiswe yi-etherification reaction ye-alkaline cellulose kunye ne-ethylene oxide (okanye i-chlorohydrin), ye-Nonionic soluble cellulose ethers. Ekubeni i-HEC ineempawu ezintle zokuqina, ukumisa, ukusabalalisa, i-emulsifying, i-bonding, ifilimu-ifom, ukukhusela umswakama kunye nokubonelela nge-colloid ekhuselayo, isetyenziswe ngokubanzi kwi-oyile yokuhlola, iingubo, ukwakhiwa, amayeza, ukutya, i-textile, i-papermaking kunye ne-polymerization. kunye neminye imimandla.
Emva kwentlanganiso ye-hydroxyethyl cellulose kunye nepeyinti esekwe emanzini?
Njenge-non-ionic surfactant, i-hydroxyethyl cellulose inezi mpawu zilandelayo ukongeza ekujikeni, ukuxhoma, ukubopha, ukudada, ukwenza ifilimu, ukusasaza, ukugcinwa kwamanzi kunye nokubonelela nge-colloid ekhuselayo:
I-HEC iyancibilika emanzini ashushu okanye amanzi abandayo, ukushisa okuphezulu okanye ukubilisa ngaphandle kwemvula, ukuze ibe noluhlu olubanzi lwe-solubility kunye neempawu ze-viscosity, kunye ne-gelation engeyona i-thermal;
Umthamo wokugcinwa kwamanzi uphindwe kabini kunalowo we-methyl cellulose, kwaye unolawulo olungcono lokuhamba;
Xa kuthelekiswa ne-methyl cellulose eyaziwayo kunye ne-hydroxypropyl methyl cellulose, isakhono sokusasazeka kwe-HEC yeyona nto imbi kakhulu, kodwa amandla okukhusela e-colloid awona anamandla;
Ayiyo-ionic kwaye inokuhlalisana kunye noluhlu olubanzi lwezinye iipolima ezinyibilikayo emanzini, ii-surfactants, kunye neetyuwa. Yinto egqwesileyo ye-colloidal thickener yezisombululo eziqulethe i-electrolyte ephezulu yoxinaniso.
Uyisebenzisa njani i-hydroxyethyl cellulose?
Yongeza ngokuthe ngqo ngexesha lemveliso - le ndlela yeyona ilula kwaye ithatha ixesha elifutshane:
Qala ukuvuselela ngokuqhubekayo ngesantya esiphantsi kwaye ucofe ngokucothayo i-hydroxyethyl cellulose ngokulinganayo kwisisombululo kwaye uqhubeke uvuselela de onke amasuntswana afakwe emanzini. Emva koko yongeza izigcini kunye nezongezelelo ezahlukeneyo. Ezinje ngebala, izixhobo zokusasaza, amanzi ammonia, njl. Gxuma de yonke i-cellulose ye-hydroxyethyl ichithwe ngokupheleleyo (i-viscosity yesisombululo iyanda kakhulu) ngaphambi kokuba ungeze amanye amacandelo kwifomula yokusabela.
Ixhotyiswe ngotywala bemama
Kukulungisa utywala oomama kunye noxinzelelo oluphezulu kuqala, kwaye ubongeze kwimveliso. Inzuzo yale ndlela kukuba inokuguquguquka okukhulu kwaye inokongezwa ngokuthe ngqo kwimveliso egqityiweyo, kodwa kufuneka igcinwe ngokufanelekileyo. Amanyathelo ale ndlela afana namanyathelo amaninzi kwindlela yoku-1; Umahluko kukuba akukho mfuneko ye-agitator ephezulu-shear, kwaye kuphela ezinye ii-agitators ezinamandla aneleyo okugcina i-cellulose ye-hydroxyethyl ngokufanayo ihlakazwe kwisisombululo inokuqhutyelwa ngaphandle kokumisa i-String de inyibilikiswe ngokupheleleyo kwisisombululo se-viscous. Nangona kunjalo, kufuneka kuqatshelwe ukuba i-fungicide kufuneka yongezwe kutywala benina ngokukhawuleza.
Iingcebiso ezinobubele:
Ekubeni i-cellulose ye-hydroxyethyl ehlanjululwe phezulu ilumgubo okanye i-fibrous solid, xa ulungiselela utywala be-hydroxyethyl cellulose, kukukhumbuza ukuba unike ingqalelo kula manqaku alandelayo:
Ngaphambi nangemva kokongeza i-hydroxyethyl cellulose, kufuneka iqhutywe ngokuqhubekayo de isisombululo sibonakale ngokucacileyo kwaye sicace;
Kufuneka ihluzwe ngokukhawuleza kwitanki yokuxuba, kwaye ungayifaki ngokuthe ngqo kwitanki yokuxuba ngobuninzi okanye kwiingqungquthela, iibhola kunye ne-hydroxyethyl cellulose;
Ubushushu bamanzi kunye nexabiso le-PH emanzini banobudlelwane obucacileyo bokuchithwa kwe-hydroxyethyl cellulose, ngoko kufuneka kuhlawulwe ingqalelo ekhethekileyo;
Musa ukongeza ezinye izinto zealkaline kumxube phambi kokuba umgubo we-hydroxyethyl cellulose ufakwe emanzini. Ukuphakamisa ixabiso le-pH emva kokucwina kuya kunceda ukunyibilika;
Kangangoko kunokwenzeka, yongeza i-agent anti-mold kwangaphambili;
Xa usebenzisa i-high-viscosity hydroxyethyl cellulose, ukuxinwa kotywala komama akufanele kube ngaphezu kwe-2.5-3% (ngobunzima), ngaphandle koko utywala komama kuya kuba nzima ukuphatha.
Ixesha lokuposa: Dec-23-2022