Yintoni i-hydroxyethyl cellulose?

Yintoni i-hydroxyethyl cellulose?

Iselulosi yeHydroxyethyl (HEC), imbala emhlophe okanye emthubi, engenavumba, engeyiyo ityhefu okanye umgubo oqinileyo, olungiselelwe yi-etherification ye-alkaline cellulose kunye ne-ethylene oxide (okanye i-chlorohydrin), ephuma kwi-genus Nonionic soluble cellulose ethers. Ngenxa yokuba i-HEC ineempawu ezintle ezifana nokuqina, ukumisa, ukusabalalisa, i-emulsifying, i-bonding, i-film-forming, ukukhusela umswakama kunye nokubonelela nge-colloids ekhuselayo, isetyenziswe ngokubanzi ekuhloliseni ioli, iingubo, ukwakhiwa, amayeza kunye nokutya, iingubo, i-papermaking kunye ne-polymers. Polymerization kunye nezinye iinkalo.

Iselulosi yeHydroxyethyl isetyenziswa kakhulu kushishino lokwandlala. Makhe sijonge indlela esebenza ngayo kwiingubo:

Kwenzeka ntoni xa i-hydroxyethyl cellulose idibana neengubo ezisekelwe emanzini?

Njenge-non-ionic surfactant, i-hydroxyethyl cellulose inezi mpawu zilandelayo ukongeza ekujikeni, ukunqumamisa, ukubopha, ukudada, ukwenza ifilimu, ukusasaza, ukugcinwa kwamanzi kunye nokubonelela ngee-colloids ezikhuselayo:

I-HEC iyancibilika kumanzi ashushu okanye abandayo, kwaye ayigqithisi kwiqondo lokushisa eliphezulu okanye ukubilisa, okwenza ibe noluhlu olubanzi lwe-solubility kunye neempawu ze-viscosity, kunye ne-gelling engeyiyo i-thermal;

Umthamo wokugcina amanzi uphindwe kabini kune-methyl cellulose, kwaye unolawulo olungcono lokuhamba;

I-non-ionic ngokwayo inokubambisana kunye noluhlu olubanzi lwezinye iipolymers ezinyibilikayo zamanzi, i-surfactants, kunye neetyuwa, kwaye i-colloidal thickener egqwesileyo equlethe izisombululo eziphezulu ze-electrolyte;

Xa kuthelekiswa ne-methyl cellulose eyaziwayo kunye ne-hydroxypropyl methyl cellulose, amandla okusasazaI-HECyeyona nto imbi, kodwa isakhono esikhuselayo se-colloid sesona sinamandla.

Ekubeni i-hydroxyethyl cellulose enyangwe kumphezulu ingumgubo okanye i-fibrous solid, i-Shandong Heda ikukhumbuza ukuba ubeke ingqalelo kula manqaku alandelayo xa ulungiselela utywala be-hydroxyethyl cellulose:

(1) Ngaphambi nasemva kokongeza i-hydroxyethyl cellulose, kufuneka igcinwe ivuselela de isisombululo sicace ngokupheleleyo kwaye sicace.

(2) Kufuneka ihlulwe ngokucothayo kwi-barrel yokuxuba, kwaye ingaxhumi ngokuthe ngqo i-hydroxyethyl cellulose kunye ne-hydroxyethyl cellulose kwi-barrel yokuxuba ngobuninzi okanye ngendlela yeengqungquthela kunye neebhola.

(3) Ubushushu bamanzi kunye nexabiso le-pH lamanzi linobudlelwane obucacileyo nokuchithwa kwe-hydroxyethyl cellulose, ngoko ke ingqwalasela ekhethekileyo kufuneka ihlawulwe kuyo.

(4) Ungaze ugalele izinto zealkaline kumxube phambi kokuba umgubo we-hydroxyethyl cellulose ufakwe emanzini. Ukunyusa i-pH kuphela emva kokumanzisa kuya kunceda ekunyibilikeni.

(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 oomama kunzima ukuphatha.