The thickening limagwirira wahydroxyethyl cellulosendi kuonjezera mamasukidwe akayendedwe mwa mapangidwe intermolecular ndi intramolecular hydrogen zomangira, komanso hydration ndi unyolo entanglement unyolo maselo. Choncho, thickening njira ya hydroxyethyl mapadi akhoza kugawidwa mu mbali ziwiri: mmodzi ndi udindo wa intermolecular ndi intramolecular hydrogen zomangira. Unyolo waukulu wa hydrophobic umalumikizana ndi mamolekyu amadzi ozungulira kudzera mu ma hydrogen bond, omwe amapangitsa kuti polimayo ikhale yabwino. Kuchuluka kwa tinthu tating'onoting'ono timachepetsa danga la kuyenda kwaulere kwa tinthu tating'onoting'ono, potero kumawonjezera kukhuthala kwa dongosolo; chachiwiri, kupyolera mu kutsekeredwa ndi kuphatikizika kwa unyolo wa maselo, maunyolo a cellulose ali mumagulu atatu amtundu wa maukonde mu dongosolo lonse, potero kuwongolera kukhuthala.
Tiyeni tiwone momwe cellulose imagwirira ntchito pakusungirako kukhazikika kwa dongosolo: choyamba, ntchito ya ma hydrogen bonds imalepheretsa kutuluka kwa madzi aulere, imagwira ntchito posungira madzi, ndipo imathandizira kupewa kulekanitsa madzi; Chachiwiri, kuyanjana kwa maunyolo a cellulose The lap entanglement imapanga maukonde olumikizidwa kapena malo osiyana pakati pa inki, fillers ndi emulsion particles, zomwe zimalepheretsa kukhazikika.
Ndi kuphatikiza kwa njira ziwiri zomwe zili pamwambazi zomwe zimathandizahydroxyethyl cellulosekukhala ndi luso labwino kwambiri lothandizira kusunga bata. Popanga utoto wa latex, HEC yowonjezeredwa panthawi yomenyedwa ndi kubalalika ikuwonjezeka ndi kuwonjezeka kwa mphamvu yakunja, kumeta ubweya wa ubweya kumawonjezeka, ma molekyulu amakonzedwa mwadongosolo lofanana ndi kayendetsedwe ka kayendetsedwe kake, ndipo ndondomeko yokhotakhota pakati pa unyolo wa maselo imawonongeka, zomwe zimakhala zosavuta Kuthamanga wina ndi mzake, kukhuthala kwa dongosolo kumachepa. Popeza dongosololi lili ndi zigawo zina zambiri (pigments, fillers, emulsions), dongosolo ladongosololi silingathe kubwezeretsa mkhalidwe wokhazikika wa kugwirizanitsa ndi kuphatikizika ngakhale atayikidwa kwa nthawi yaitali utoto utasakanikirana. Pankhaniyi, HEC imangodalira ma hydrogen bond. Zotsatira za kusunga madzi ndi thickening amachepetsa thickening dzuwa laHEC, ndipo chopereka cha chikhalidwe chobalalika ichi ku kukhazikika kosungirako kwadongosolo kumachepetsedwanso moyenera. Komabe, HEC yosungunuka idamwazika mofanana mu dongosolo pa liwiro lochepetsetsa panthawi ya letdown, ndipo mawonekedwe a netiweki opangidwa ndi kulumikizidwa kwa unyolo wa HEC sanawonongeke. Choncho kusonyeza mkulu thickening bwino ndi kusunga bata. Mwachiwonekere, machitidwe a nthawi imodzi a njira ziwiri zokometsera ndizo maziko a kulimbitsa bwino kwa cellulose ndikuonetsetsa kuti kusunga kukhazikika. Mwanjira ina, kusungunuka ndi kumwazikana kwa cellulose m'madzi kudzakhudza kwambiri kukhuthala kwake komanso kuthandizira kwake pakusunga bata.
Nthawi yotumiza: Apr-25-2024