Iimpawu zokuqina kunye nokugcinwa kwamanzi ze-cellulose ethers

I-cellulose ether idla ngokuba yinxalenye ebalulekileyo kwiimortar ezixutywe nomileyo. Kuba sisixhobo esibalulekileyo sokugcina amanzi esineempawu ezintle zokugcina amanzi. Le mpawu yokugcina amanzi inokuthintela amanzi kwimortar emanzi ukuba angatshi ngaphambi kwexesha okanye afunxwe yi-substrate, yandise ixesha elisebenzayo lemortar emanzi, iqinisekise ukuba isamente inamanzi apheleleyo, kwaye ekugqibeleni iqinisekise iimpawu zoomatshini zemortar, eziluncedo kakhulu ekwakhiweni kweemortar ezibhityileyo (ezifana neemortar zokuplasta) kunye neemortar kwiindawo ezifunxa amanzi amaninzi (ezifana neebhloko zekhonkrithi ezivuthuzayo), ubushushu obuphezulu kunye neemeko ezomileyo.

Ipropati yokugcina amanzi ye-cellulose inxulumene kakhulu ne-viscosity yayo. Okukhona i-viscosity ye-cellulose ether iphezulu, kokukhona ukusebenza kokugcina amanzi kuphucuka. I-viscosity yiparameter ebalulekileyo yokusebenza kwe-MC. Okwangoku, abavelisi be-MC abahlukeneyo basebenzisa iindlela ezahlukeneyo kunye nezixhobo ukuvavanya i-viscosity ye-MC, kwaye iindlela eziphambili yiHaake Rotovisko, iHoppler, i-Ubbelohde kunye neBrookfield. Kwimveliso efanayo, iziphumo ze-viscosity ezilinganiswa ngeendlela ezahlukeneyo zahluka kakhulu, kwaye ezinye zahlukile kakhulu. Ke ngoko, xa kuthelekiswa i-viscosities, kubalulekile ukwenza njalo phakathi kweendlela zovavanyo ezifanayo, kubandakanya ubushushu, i-rotor, njl.

Ngokubanzi, okukhona i-viscosity iphezulu, kokukhona isiphumo sokugcina amanzi siba ngcono. Nangona kunjalo, okukhona i-viscosity iphezulu, kokukhona ubunzima be-molecular ye-MC buphakama kunye nokuncipha kokunyibilika kwayo okuhambelanayo, okunefuthe elibi kumandla kunye nokusebenza kolwakhiwo lwe-mortar. Okukhona i-viscosity iphezulu, kokukhona isiphumo sokutyeba sibonakala ngakumbi kwi-mortar. Okukhona i-viscosity iphezulu, kokukhona i-mortar emanzi iya kuba ncamathela ngakumbi, kokubini ekwakheni, njengoko kuboniswe yi-sticky scraper kunye nokunamathela okuphezulu kwi-substrate. Nangona kunjalo, ayincedi kangako ekwandiseni amandla olwakhiwo lwe-mortar emanzi ngokwayo. Xa zombini zakhiwa, zibonisa ukusebenza okuchasene nokugoba akubonakali. Ngokwahlukileyo koko, ezinye i-viscosity ephantsi ukuya kwephakathi kodwa i-methyl cellulose ethers ezilungisiweyo zisebenza kakuhle ekuphuculeni amandla olwakhiwo lwe-mortar emanzi.