Yintoni iHydroxyethyl Cellulose?
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.
Kwenzeka ntoni xa i-hydroxyethyl cellulose idibana nepeyinti esekwe emanzini?
Njengomntu osebenza nge-non-ionic,i-hydroxyethyl celluloseinezi mpawu zilandelayo ukongeza ukujiya, ukuxhoma, ukubopha, ukudada, ukwenza ifilim, 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, amandla okusasaza e-HEC yeyona nto imbi, 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 eziphezulu ze-electrolyte;
Uyisebenzisa njani i-hydroxyethyl cellulose? Uyongeza njani?
Yongeza ngokuthe ngqo ngexesha lemveliso - le ndlela iyona elula kwaye ithatha ixesha elifutshane.
Yongeza amanzi acocekileyo kwi-emele enkulu exhotyiswe ngomxube wokucheba ophezulu. Qala ukushukumisa ngokuqhubekayo ngesantya esiphantsi kwaye kancinane uhluze i-hydroxyethyl cellulose kwisisombululo ngokulinganayo. Qhubeka uvuselela de onke amaqhekeza afakwe. 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.
Kuba iselulose ye-hydroxyethyl enyangwe ngomphezulu ingumgubo okanye i-fibrous solid, uLihongde ukukhumbuza ukuba uthathele ingqalelo la manqaku alandelayo xa ulungiselela utywala kamama be-hydroxyethyl cellulose:
(1) Ngaphambi nangemva kokongeza i-hydroxyethyl cellulose, kufuneka iqhutywe ngokuqhubekayo de isisombululo sibonakale ngokucacileyo kwaye sicace.
(2) Kufuneka ihluzwe kancinane kwitanki yokuxuba, kwaye ungafaki isixa esikhulu okanye ubeke ngqo i-hydroxyethyl cellulose kwitanki yokuxuba.
(3) Ubushushu bamanzi kunye nexabiso le-PH emanzini linobudlelwane obubalulekileyo kunye nokuchithwa kwe-hydroxyethyl cellulose, ngoko ke ingqwalasela ekhethekileyo kufuneka ihlawulwe.
(4) Musa ukongeza ezinye izinto zealkaline kumxube phambi kokuba umgubo we-hydroxyethyl cellulose ufakwe emanzini. Ukunyusa i-pH emva kokumanzisa kunceda ukunyibilika.
(5) Kangangoko kunokwenzeka, yongeza i-agent ye-antifungal kwangaphambili
(6) Xa usebenzisa i-high-viscosity hydroxyethyl cellulose, ukuxinwa kotywala komama akufanele kube ngaphezu kwe-2.5-3% (ngobunzima), ngaphandle koko utywala lukamama luya kuba nzima ukuphatha.
Ixesha lokuposa: Dec-26-2022