I-Hydroxyethyl cellulose yi-viscosity grade ephakathi ukuya kwephezulu ye-cellulose ether, esetyenziswa njengesithambisi kunye nesiqinisi kwiingubo ezisekelwe emanzini, ingakumbi xa i-viscosity yokugcina iphezulu kwaye i-viscosity yokusetyenziswa iphantsi. I-Cellulose ether kulula ukuyisasaza emanzini abandayo anexabiso le-pH ≤ 7, kodwa kulula ukuyihlanganisa kwi-alkaline liquid enexabiso le-pH ≥ 7.5, ngoko ke kufuneka sinikele ingqalelo ekungasabalaleni kwe-cellulose ether.
Iimpawu kunye nokusetyenziswa kwe-hydroxyethyl cellulose:
1. Isinyibilikisi samanzi esingeyiyo i-ionic esilwa ne-enzyme, esingasetyenziswa kuluhlu olubanzi lwexabiso le-pH (PH=2-12).
2. Kulula ukuyisasaza, ingongezwa ngqo ngendlela yomgubo owomileyo okanye ngendlela yodaka xa kugaywa iipigments kunye nezizalisi.
3. Ulwakhiwo oluhle kakhulu. Inezibonelelo zokonga abasebenzi, ayilula ukuyicofa nokuxhoma, kwaye iyamelana kakuhle nokutshiza.
4. Ukuhambelana okuhle nee-surfactants ezahlukeneyo kunye nezithinteli ezisetyenziswa kwipeyinti yelatex.
5. Ubuninzi be-viscosity yokugcina buzinzile, nto leyo enokuthintela ubuninzi be-viscosity yepeyinti ye-latex ekuncipheni ngenxa yokubola kwee-enzymes kwi-hydroxyethyl cellulose ngokubanzi.
Iimpawu zeHydroxyethyl Cellulose
I-Hydroxyethyl cellulose ether yipolymer engeyiyo ionic enyibilikayo emanzini. Yipowder emhlophe okanye etyheli ekhanyayo ehamba lula. Ngokubanzi ayinyibiliki kwiintlambululi ezininzi zendalo.
1. I-HEC iyanyibilika emanzini ashushu okanye emanzini abandayo, kwaye ayitshisi xa ishushu kakhulu okanye ibila, nto leyo eyenza ukuba ibe neempawu ezahlukeneyo zokunyibilika kunye ne-viscosity, kunye ne-gelation engashushu.
2. Ayina-ionic kwaye ingahlala kunye nezinye iipolymers ezinyibilikayo emanzini, ii-surfactants, kunye neetyuwa. Sisithambisi esibalaseleyo se-colloidal kwizisombululo ezinee-electrolytes ezinoxinzelelo oluphezulu.
3. Umthamo wokugcina amanzi uphindwe kabini kunowe-methyl cellulose, kwaye unolawulo olungcono lokuhamba kwamanzi.
4. Xa kuthelekiswa ne-methyl cellulose eyaziwayo kunye ne-hydroxypropyl methyl cellulose, amandla okusasaza e-HEC ngawona mabi kakhulu, kodwa amandla okukhusela e-colloid ngawona anamandla (anemibala).
Ukujiya
Ichaphazela ukusebenza kakuhle, okufana noku: ukuguguleka, ukumelana nokutshiza, ukumelana nokulahleka; ulwakhiwo olukhethekileyo lwenethiwekhi ye-cellulose ether lunokuzinzisa umgubo kwinkqubo yokugquma, lucothise isantya sokuhlala kwawo, kwaye lwenze inkqubo ifumane isiphumo esingcono sokugcina.
Ukumelana kakuhle namanzi
Emva kokuba ifilimu yepeyinti yomile ngokupheleleyo, inokumelana kakuhle namanzi. Oku kubonisa ngakumbi ixabiso lokumelana kwayo namanzi kwinkqubo yokwenza i-PVC ephezulu. Ukusuka kwiifomyula zangaphandle ukuya kweziTshayina, kule nkqubo ye-PVC ephezulu, ubungakanani be-cellulose ether eyongeziweyo ngokusisiseko yi-4-6‰.
ukugcinwa kwamanzi okugqwesileyo
I-Hydroxyethyl cellulose inokwandisa ixesha lokuvezwa kwaye ilawule ixesha lokomisa ukuze kufunyanwe ukwakheka okungcono kwefilimu; phakathi kwazo, ukugcinwa kwamanzi kwe-methyl cellulose kunye ne-hypromellose kwehla kakhulu ngaphezu kwama-40°C, kwaye ezinye izifundo zangaphandle zikholelwa ukuba inokunciphisa ngama-50%, amathuba okuba neengxaki ehlotyeni nakwiqondo lobushushu eliphezulu ayanda kakhulu.
Uzinzo oluhle lokunciphisa ukutyibilika kwepeyinti
Susa i-sedimentation, i-syneresis kunye ne-flocculation; okwangoku, i-hydroxyethyl cellulose ether luhlobo lwemveliso olungelulo lwe-ionic. Ayisebenzi kunye nezongezo ezahlukeneyo kwinkqubo.
Ukuhambelana okuhle nenkqubo yemibala emininzi
Ukuhambelana okuhle kakhulu kwezinto ezifaka imibala, ii-pigment kunye nezizalisi; i-hydroxyethyl cellulose ether inophuhliso oluhle kakhulu lombala, kodwa emva kokuguqulwa, njenge-methyl kunye ne-ethyl, kuya kubakho iingozi ezifihlakeleyo zokuhambelana kwe-pigment.
Ukuhambelana okuhle nezinto ezahlukeneyo zokwenza imveliso
Ingasetyenziswa kwiinkqubo ezahlukeneyo zokwenziwa kwepeyinti.
Umsebenzi ophezulu wokubulala iintsholongwane
Ifanelekile kwiinkqubo ze-silicate
Ixesha lokuthumela: Feb-02-2023