Kuthatha ixesha elingakanani ukuba i-HEC ifakwe emanzini?

I-HEC (i-Hydroxyethylcellulose) isetyenziswa ngokuqhelekileyo i-polymer e-soluble yamanzi kunye noluhlu olubanzi lwezicelo kwiimveliso zoshishino kunye nabathengi, ngokukodwa kwiingubo, izimonyo, amayeza kunye namashishini okutya. Inkqubo ye-hydration ye-HEC ibhekisela kwinkqubo apho i-HEC powder ithatha amanzi kwaye ichithe emanzini ukwenza isisombululo esifanayo.

Izinto ezichaphazela ixesha lokuchithwa kwe-HEC
Ixesha le-hydration ye-HEC ayilungiswanga, kodwa ichaphazeleka ngezinto ezininzi. Ngokuqhelekileyo, ixesha lokuchithwa kwe-HEC emanzini lingahluka ukusuka kwimizuzu embalwa ukuya kwiiyure ezimbalwa. Ezi zilandelayo zezona zinto ziphambili ezichaphazela ixesha le-HEC le-hydration:

I-molecular weight and degree of substitution of HEC: I-molecular weight and degree of substitution of HEC (i-degree of substitution ibhekisela kwinqanaba apho amaqela e-hydroxyethyl athatha indawo yamaqela e-hydroxyl kwi-molecule ye-cellulose) iya kuchaphazela kakhulu isantya sayo se-hydration. I-HEC enobunzima obukhulu be-molecular ithatha ixesha elide ukuba i-hydrate, ngelixa i-HEC enezinga eliphezulu lokutshintshwa livame ukuba ne-solubility engcono yamanzi kunye nesantya sokuhamba kwamanzi siya kukhawuleziswa ngokufanelekileyo.

Ubushushu bamanzi: Ubushushu bamanzi yenye yezinto eziphambili ezichaphazela ixesha le-HEC le-hydration. Ngokuqhelekileyo, ubushushu bamanzi angaphezulu bunokukhawulezisa inkqubo yokufakwa kwamanzi kwi-HEC. Ngokomzekelo, emanzini afudumeleyo, i-HEC i-hydrates ngokukhawuleza kunamanzi abandayo. Nangona kunjalo, ubushushu bamanzi obuphezulu kakhulu bunokubangela ukuba i-HEC inyibilike ngokungalingani kwaye yenze i-clumps, ngoko ngokuqhelekileyo kuyacetyiswa ukuba kulawulwe ubushushu bamanzi phakathi kwe-20 ° C kunye ne-40 ° C.

Isantya esichukumisayo kunye nendlela: Ukuvuselela yindlela ebalulekileyo yokukhuthaza i-HEC hydration. Ukukhawuleza kwesantya esishukumisayo, ixesha elifutshane le-hydration ye-HEC liqhelekileyo. Nangona kunjalo, ukugqithisa kunokwazisa amaqamza amaninzi, okuchaphazela umgangatho wesisombululo. Kucetyiswa ngokubanzi ukuba wongeze i-HEC umgubo ngokuthe ngcembe kunye nesantya esisezantsi esishukumisayo ukunqanda ukubunjwa kweeagglomerates kunye nokugcina ukuvuselela okuphakathi kuyo yonke inkqubo yokufakwa kwamanzi.

Ixabiso le-pH yesisombululo: I-HEC inovelwano ngokwentelekiso kwixabiso le-pH kwaye isebenza kakuhle kwindawo engathathi hlangothi okanye eneasidi kancinane. Ngaphantsi kweemeko ezigqithisileyo ze-pH (ezifana ne-acids eqinile okanye iziseko), i-solubility ye-HEC inokuchaphazeleka, ngaloo ndlela yandisa ixesha le-hydration. Ke ngoko, kucetyiswa ngokubanzi ukwenza i-hydration ye-HEC kwindawo ekufuphi ne-pH engathathi hlangothi.

Iindlela zokunyangwa kwangaphambili kwe-HEC: Iindlela zokunyanga kwangaphambili ezifana nokumisa, ukugawula, njl njl kuya kuchaphazela ukusebenza kwe-hydration ye-HEC. Ukucutshungulwa ngokufanelekileyo kwe-HEC powder iyancibilika kwaye i-hydrates ngokukhawuleza. Ngokomzekelo, ukusabalalisa kwangaphambili i-HEC powder kwi-ethanol okanye i-glycerin ngaphambi kokuyongeza emanzini kunokunciphisa kakhulu ixesha lokuhamba.

Imibuzo Ebuzwa Rhoqo Ngexesha le-HEC Hydration Process
Ngexesha lenkqubo ye-hydration ye-HEC, unokuhlangabezana neengxaki eziqhelekileyo, ezihlala zihambelana nendlela yokusebenza okanye iimeko zokusingqongileyo:

I-Agglomeration: Ngaphantsi kweemeko zokusebenza ezingafanelekanga, i-HEC powder inokwenza i-agglomerations emanzini. Ngokuqhelekileyo oku kubangelwa ukuba xa i-HEC powder idibana namanzi, uluhlu lwangaphandle luthatha ngokukhawuleza amanzi kunye nokuvuvukala, luthintela umgca wangaphakathi ukuba udibanise namanzi, ngaloo ndlela wenze i-clumps. Le meko yandisa kakhulu ixesha lokufakwa kwamanzi kwaye ikhokelela kwisisombululo se-inhomogeneity. Ukuze ugweme oku, ngokuqhelekileyo kucetyiswa ukuba ufefe ngokuthe ngcembe kwi-HEC powder ngelixa uvuselela.

Ingxaki yeBubble: Ngaphantsi kwamandla aphezulu okucheba okanye ukuvuselela ngokukhawuleza, izisombululo ze-HEC zithande ukwazisa inani elikhulu lamaqamza. La maqamza omoya angachaphazela umgangatho wesisombululo sokugqibela, ngakumbi xa sisetyenziselwa iipeyinti okanye izithambiso. Ngoko ke, ukuvuselela ngamandla kufuneka kugwenywe ngexesha lenkqubo ye-hydration, kwaye ukubunjwa kwamabhubhu kunokunciphisa ngokufaka i-defoamers.

Utshintsho lwe-viscosity yesisombululo: I-viscosity yesisombululo se-HEC inyuka ngokuthe ngcembe njengoko inkqubo yokufakwa kwamanzi iqhubeka. Kwezinye izicelo, ezifana nokuqulunqwa kweengubo okanye i-adhesives, ukulawulwa kwe-viscosity kubaluleke kakhulu. Ukuba ixesha le-hydration lide kakhulu, i-viscosity ingaba phezulu kakhulu, ichaphazela ukusebenza. Ke ngoko, ukulawulwa ngokuchanekileyo kwexesha le-hydration kubalulekile ukufumana isisombululo esifunwayo se-viscosity.

I-HEC Hydration kwi-Practical Applications
Kwizicelo ezisebenzayo, inkqubo ye-hydration ye-HEC idla ngokufuneka ukuba iphuculwe ngokubambisana neenkqubo ezithile zokuvelisa kunye neemfuno zemveliso. Ngokomzekelo, kwi-cosmetic formulations, ukwenzela ukufumana ukuthungwa okufunwayo kunye nokuzinza, i-HEC idla ngokuchithwa kwangaphambili emanzini afudumele kwaye ke ezinye izithako zongezwa ngokuthe ngcembe. Kwiingubo zezakhiwo, kunokufuneka ukulungelelanisa isantya esishukumisayo kunye nobushushu bamanzi ukukhawuleza inkqubo ye-hydration ye-HEC, ngaloo ndlela kuphuculwe ukusebenza kakuhle kwemveliso.

Ixesha le-hydration ye-HEC yinkqubo eguquguqukayo kwaye ichaphazeleka ngokubanzi ngezinto ezininzi. Kwiimeko ezahlukeneyo zokusetyenziswa, kufuneka zilungiswe kwaye zilungiswe ngokwemiqathango ethile ukuze kuqinisekiswe ukuba i-HEC inokuthi ifakwe emanzini ngokukhawuleza kwaye ifake isisombululo esizinzile. Oku akuncedi nje ukuphucula ukusebenza kakuhle kwemveliso kodwa kuqinisekisa umgangatho kunye nokusebenza kwemveliso yokugqibela.