Ipeyinti, ngokwesiko ebizwa ngokuba yipeyinti eTshayina. Le peyinti igqunywe phezu kwento eza kukhuselwa okanye ukuhonjiswa, kwaye inokwenza ifilimu eqhubekayo enamathele ngokuqinileyo kwinto eza kufakwa.
Yintoni iHydroxyethyl Cellulose?
I-Hydroxyethyl cellulose (HEC), i-solid emhlophe okanye ekhanyayo emthubi, engenavumba, engenatyhefu okanye eyi-powdery solid, elungiselelwe yi-etherification reaction ye-alkaline cellulose kunye ne-ethylene oxide (okanye i-chlorohydrin), yeyama-Nonionic soluble cellulose ethers. Ekubeni i-HEC ineempawu ezilungileyo zokutyeba, ukuxhoma, ukusasaza, ukuxuba, ukubopha, ukwenza ifilimu, ukukhusela umswakama kunye nokubonelela nge-colloid ekhuselayo, isetyenziswa kakhulu ekuhloleni ioyile, ukugquma, ukwakha, amayeza, ukutya, ilaphu, ukwenza iphepha kunye ne-polymer Polymerization kunye neminye imimandla.
Kwenzeka ntoni xa i-hydroxyethyl cellulose idibana nepeyinti esekwe emanzini?
Njenge-surfactant engeyiyo i-ionic, i-hydroxyethyl cellulose ineempawu ezilandelayo ukongeza ekuqineni, ekumiseni, ekubopheni, ekuntanteni, ekwenzeni ifilimu, ekuchitheni, ekugcineni amanzi kunye nokubonelela nge-colloid ekhuselayo:
I-HEC iyanyibilika emanzini ashushu okanye emanzini abandayo, kubushushu obuphezulu okanye ibila ngaphandle kwemvula, ngoko ke ineempawu ezahlukeneyo zokunyibilika kunye ne-viscosity, kunye ne-gelation engashushu;
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 esibalaseleyo se-colloidal kwizisombululo ze-electrolyte ezinoxinzelelo oluphezulu;
Uyisebenzisa njani i-hydroxyethyl cellulose? Ungayongeza njani?
Yongeza ngqo ngexesha lokuvelisa - le ndlela yeyona ilula kwaye ithatha ixesha elifutshane.
Yongeza amanzi acocekileyo kwibhakethi enkulu exhotyiswe ngomxube ocoliweyo kakhulu. Qala ukuxuba rhoqo ngesantya esiphantsi kwaye kancinci uhluze i-hydroxyethyl cellulose kwisisombululo ngokulinganayo. Qhubeka uvuselela de zonke iisuntswana zimanzi. Emva koko yongeza izithinteli kunye nezinye izongezo ezahlukeneyo. Ezifana neepigment, izixhobo zokusasaza, amanzi e-ammonia, njl. Xuba de yonke i-hydroxyethyl cellulose ichitheke ngokupheleleyo (i-viscosity yesisombululo iyanda kakhulu) ngaphambi kokongeza ezinye izinto kwifomyula yokusabela.
Ixhotyiswe ngotywala be-mama
Kukulungiselela utywala obungumama ngoxinzelelo oluphezulu 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 ezinokuqhubeka ngaphandle kokumisa. Hlanganisa ide inyibilike ngokupheleleyo ibe sisisombululo esiqinileyo. Nangona kunjalo, kufuneka kuqatshelwe ukuba i-fungicide kufuneka yongezwe kwi-alcohol yomama ngokukhawuleza.
Ekubeni i-hydroxyethyl cellulose ecociweyo phezu kwayo ifana ne-powdery okanye i-fibrous solid, iLihongde ikukhumbuza ukuba unikele ingqalelo kula manqaku alandelayo xa ulungiselela i-hydroxyethyl cellulose mother liquor:
(1) Ngaphambi nasemva kokufaka i-hydroxyethyl cellulose, kufuneka ixutywe rhoqo de isisombululo sibe sobala ngokupheleleyo kwaye sicace gca.
(2) Mayihluzwe kancinci kancinci kwi-tank yokuxuba, kwaye ungafaki isixa esikhulu okanye ufake i-hydroxyethyl cellulose ngokuthe ngqo kwi-tank yokuxuba.
(3) Ubushushu bamanzi kunye nexabiso le-PH emanzini zinobudlelwane obubalulekileyo nokunyibilika kwe-hydroxyethyl cellulose, ngoko ke kufuneka kunikwe ingqalelo ekhethekileyo.
(4) Musa ukongeza ezinye izinto ze-alkaline kumxube ngaphambi kokuba umgubo we-hydroxyethyl cellulose ufakwe emanzini. Ukunyusa i-pH emva kokumanzisa 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 obuvela kumama buya kuba nzima ukuluphatha.
Ixesha lokuthumela: Matshi-02-2023