Namhlanje, siza kuthetha nawe malunga nokusetyenziswa okuqhelekileyo kwe-hydroxyethyl cellulose kwipende kunye neengubo. Ipeyinti, ngokwesiko ebizwa ngokuba ziingubo eTshayina. Into ebizwa ngokuba yi-coating ifakwe kumphezulu wento ekufuneka ikhuselwe okanye ihlotshiswe, kwaye inokwenza ifilimu eqhubekayo ehlanganiswe ngokuqinileyo kwinto efakwe kuyo.
Yintoni i-hydroxyethyl cellulose?
I-Hydroxyethyl cellulose (HEC), i-cellulose emhlophe okanye ekhanyayo, engenavumba, i-non-toxic fibrous okanye i-powdery solid, elungiswe yi-etherification ye-alkaline cellulose kunye ne-ethylene oxide (okanye i-chlorohydrin), eye-genus ye-Nonionic e-soluble cellulose ethers. Ngenxa yokuba i-HEC ineempawu ezintle zokuqina, ukumisa, ukusabalalisa, i-emulsifying, i-bonding, ifilimu-ifom, ukukhusela umswakama kunye nokubonelela nge-colloids ekhuselayo, isetyenziswe ngokubanzi ekuhloliseni ioli, iingubo, ukwakhiwa, amayeza kunye nokutya, iingubo, i-papermaking kunye neepolymers. Polymerization kunye nezinye iinkalo.
Kwenzeka ntoni xa i-hydroxyethyl cellulose idibana nesiseko samanziipeyinti?
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;
Xa kuthelekiswa ne-methyl cellulose eyaziwayo kunye ne-hydroxypropyl methyl cellulose, isakhono sokusasazeka kwe-HEC yeyona nto imbi kakhulu, 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 lokuvelisa - le ndlela iyona nto ilula kwaye ithatha ixesha elincinci.
Yongeza amanzi acocekileyo kwi-vat exhotywe nge-blender ephezulu yokucheba. Qalisa ngokuqhubekayo ngesantya esiphantsi kwaye kancinane uhluze i-hydroxyethyl cellulose ngokulinganayo kwisisombululo. Qhubeka uvuselela de onke amaqhekeza afakwe emanzini. 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 ukuphumeza ukusabela.
Ixhotyiswe ngotywala bemama.
Kukulungisa utywala oomama kunye noxinzelelo oluphezulu kuqala, kwaye ungeze 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 ezaneleyo zokugcina i-cellulose ye-hydroxyethyl ngokulinganayo ihlakazwe kwisisombululo ingasetyenziselwa, kwaye iqhube phambili i-Vuthuza ide inyibilike ngokupheleleyo kwisisombululo se-viscous. Nangona kunjalo, kufuneka kuqatshelwe ukuba i-agent ye-antifungal kufuneka yongezwe kumama otywala ngokukhawuleza.
Ekubeni i-cellulose ye-hydroxyethyl ephathwa ngomphezulu 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.
Ixesha lokuposa: Nov-03-2022