Yintoni i-hydroxyethyl cellulose?

Yintoni i-hydroxyethyl cellulose?

I-Hydroxyethyl cellulose (HEC), i-solid emhlophe okanye engwevu ekhanyayo, engenavumba, engenatyhefu okanye eyimpuphu, elungiselelwe ngokuthambisa i-alkaline cellulose kunye ne-ethylene oxide (okanye i-chlorohydrin), eyinxalenye ye-genus Nonionic soluble cellulose ethers. Ngenxa yokuba i-HEC ineempawu ezilungileyo ezifana nokuqina, ukuxhoma, ukusasaza, ukuxuba, ukubopha, ukwenza ifilimu, ukukhusela umswakama kunye nokubonelela ngee-colloids ezikhuselayo, isetyenzisiwe kakhulu ekuhloleni ioyile, ukugquma, ukwakha, amayeza nokutya, amalaphu, ukwenza iphepha kunye nee-polymers. Ukudibanisa nezinye iindawo.

I-Hydroxyethyl cellulose isetyenziswa kakhulu kwishishini leengubo. Makhe sijonge indlela esebenza ngayo kwiingubo:

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

Njenge-surfactant engeyiyo i-ionic, i-hydroxyethyl cellulose ineempawu ezilandelayo ukongeza ekuqineni, ekumiseni, ekubopheni, ekuflotheni, ekwenzeni ifilimu, ekuchitheni, ekugcineni amanzi kunye nokubonelela ngee-colloids ezikhuselayo:

I-HEC iyanyibilika emanzini ashushu okanye abandayo, kwaye ayitshisi xa ishushu kakhulu okanye ibila, nto leyo eyenza ukuba ibe neempawu ezahlukeneyo zokunyibilika kunye ne-viscosity, kunye ne-gelling engatshisi kakhulu;

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

I-Non-ionic ngokwayo inokudibana nezinye iintlobo ngeentlobo zeepolymers ezinyibilikayo emanzini, ii-surfactants, kunye neetyuwa, kwaye sisixhobo esihle kakhulu sokwandisa i-colloidal esinezisombululo ze-electrolyte ezixineneyo kakhulu;

Xa kuthelekiswa ne-methyl cellulose eyaziwayo kunye ne-hydroxypropyl methyl cellulose, amandla okusasazaI-HECyeyona imbi kakhulu, kodwa amandla okukhusela e-colloid ngawona anamandla.

Ekubeni i-hydroxyethyl cellulose ecociweyo phezu komhlaba iyinto eqinileyo okanye ene-fibrous solid, iShandong Heda ikukhumbuza ukuba unikele ingqalelo kula manqaku alandelayo xa ulungiselela i-hydroxyethyl cellulose mother liquor:

(1) Ngaphambi nasemva kokufaka i-hydroxyethyl cellulose, kufuneka ihlale ixutywa de isisombululo sibe sobala ngokupheleleyo kwaye sicace.

(2) Kufuneka ihluzwe kancinci kancinci kwibhareli yokuxuba, kwaye ungayiqhagamshela ngqo i-hydroxyethyl cellulose kunye ne-hydroxyethyl cellulose kwibhareli yokuxuba ngobuninzi okanye ngendlela yamaqhuqhuva kunye neebhola.

(3) Ubushushu bamanzi kunye nexabiso le-pH lamanzi zinobudlelwane obucacileyo nokunyibilika kwe-hydroxyethyl cellulose, ngoko ke kufuneka kunikwe ingqalelo ekhethekileyo kuwo.

(4) Ungaze wongeze ezinye izinto ze-alkaline kumxube ngaphambi kokuba umgubo we-hydroxyethyl cellulose ufakwe emanzini. Ukunyusa i-pH kuphela emva kokumanzisa kuya kunceda ekunyibilikeni.

(5) Kangangoko kunokwenzeka, yongeza i-antifungal agent kwangaphambili.

(6) Xa usebenzisa i-hydroxyethyl cellulose ene-viscosity ephezulu, uxinzelelo lotywala oluvela kumama akufuneki lube ngaphezulu kwe-2.5-3% (ngokobunzima), kungenjalo utywala oluvela kumama kunzima ukuluphatha.