Indima ye-hydroxyethyl cellulose (HEC) kwiingubo!

I-Hydroxyethyl cellulose (HEC), i-solid emhlophe okanye ekhanyayo emthubi, engenavumba, engenatyhefu ene-fibrous okanye engumgubo, 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 zokutyeba, 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.

Emva kokuba i-hydroxyethyl cellulose idibana nepeyinti esekwe 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;

Xa kuthelekiswa ne-methyl cellulose eyaziwayo kunye ne-hydroxypropyl methyl cellulose, amandla okusasaza e-HEC ngawona ambi kakhulu, kodwa amandla okukhusela e-colloid ngawona anamandla;

Ayina-ionic kwaye ingasebenza kunye nezinye iipolymers ezinyibilikayo emanzini, ii-surfactants, kunye neetyuwa. Sisithambisi esihle se-colloidal kwizisombululo ze-electrolyte ezinoxinzelelo oluphezulu.

Ungayisebenzisa njani i-hydroxyethyl cellulose?

Yongeza ngqo ngexesha lokuvelisa - le ndlela yeyona ilula kwaye ithatha ixesha elincinci:

Qala ngokuxovula rhoqo ngesantya esiphantsi uze ucofe kancinci i-hydroxyethyl cellulose ngokulinganayo kwisisombululo uze uqhubeke uxovula de zonke iisuntswana zimanziswe. Emva koko yongeza izinto zokugcina ulwelo kunye nezinye izongezo ezahlukeneyo. Ezifana neepigment, izixhobo zokusasaza, i-ammonia, njl. Xuba de yonke i-hydroxyethyl cellulose ichitheke ngokupheleleyo (i-viscosity yesisombululo iyanda kakhulu) ngaphambi kokongeza ezinye izinto kwifomyula ukuze wenze impendulo.

Ixhotyiswe ngotywala be-mama

Kukulungiselela utywala obungumama obunomlinganiselo ophezulu kuqala, uze ubongeze kwimveliso. Inzuzo yale ndlela kukuba inokuguquguquka okukhulu kwaye inokongezwa ngokuthe ngqo kwimveliso egqityiweyo, kodwa kufuneka igcinwe kakuhle. Amanyathelo ale ndlela afana namanyathelo amaninzi kwiNdlela yoku-1; umahluko kukuba akukho mfuneko ye-agitator ephezulu, kwaye kuphela ezinye i-agitators ezinamandla aneleyo okugcina i-hydroxyethyl cellulose isasazeke ngokulinganayo kwisisombululo ezingasetyenziswa, kwaye ziqhubeke nokuxuba de zinyibilike ngokupheleleyo zibe sisisombululo esiqinileyo. Nangona kunjalo, kufuneka kuqatshelwe ukuba i-arhente ye-antifungal kufuneka yongezwe kwi-alcohol yomama ngokukhawuleza.

Iingcebiso ezilungileyo:

Ekubeni i-hydroxyethyl cellulose ecociweyo phezu komhlaba ifana ne-powdery okanye i-fibrous solid, xa ulungisa i-hydroxyethyl cellulose mother liquor, khumbuza ukuba unikele ingqalelo kula manqaku alandelayo:

Ngaphambi nasemva kokufaka i-hydroxyethyl cellulose, kufuneka ihlale ixutywa de isisombululo sibe sobala ngokupheleleyo kwaye sicace;

Kufuneka ihluzwe kancinci kwibhareli yokuxuba, kwaye ungaqhagamsheli ngokuthe ngqo amaqhuma okanye ii-spheroids kunye ne-hydroxyethyl cellulose kwibhareli yokuxuba;

Ubushushu bamanzi kunye nexabiso le-pH lamanzi zinobudlelwane obubalulekileyo nokunyibilika kwe-hydroxyethyl cellulose, ngoko ke kufuneka kunikwe ingqalelo ekhethekileyo kuwo;

Musa ukongeza ezinye izinto ze-alkaline kumxube ngaphambi kokubai-hydroxyethyl celluloseumgubo ufunxwa ngamanzi. Ukunyusa ixabiso le-pH emva kokufunxwa kuya kunceda ukunyibilika;

Kangangoko kunokwenzeka, yongeza i-arhente yokubola kwangaphambili;

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