HEC (Hydroxyethylcellulose) ndi polima yosungunuka m'madzi yomwe imagwiritsidwa ntchito kwambiri m'mafakitale ndi ogula, makamaka m'mafakitale, zodzoladzola, mankhwala ndi zakudya. Njira ya hydration ya HEC imatanthawuza njira yomwe HEC ufa umatenga madzi ndikusungunula m'madzi kuti apange njira yofanana.
Zomwe zimakhudza nthawi ya hydration ya HEC
Nthawi ya hydration ya HEC sinakhazikitsidwe, koma imakhudzidwa ndi zinthu zambiri. Kawirikawiri, nthawi ya hydration ya HEC m'madzi imatha kusiyana ndi mphindi zingapo mpaka maola angapo. Zotsatirazi ndi zifukwa zazikulu zomwe zimakhudza nthawi ya HEC hydration:
Kulemera kwa mamolekyulu ndi digiri ya kusintha kwa HEC: Kulemera kwa molekyulu ndi digiri ya kulowetsedwa kwa HEC (degree of substitution imatanthawuza momwe magulu a hydroxyethyl amalowa m'malo mwa magulu a hydroxyl mu molekyulu ya cellulose) zidzakhudza kwambiri mlingo wake wa hydration. HEC yokhala ndi kulemera kwakukulu kwa ma molekyulu imatenga nthawi yayitali kuti ikhale ndi madzi, pamene HEC yokhala ndi digiri yapamwamba yoloweza m'malo imakhala ndi madzi osungunuka bwino ndipo kuthamanga kwa madzi kumathamanga moyenerera.
Kutentha kwa madzi: Kutentha kwa madzi ndi chimodzi mwazinthu zazikulu zomwe zimakhudza nthawi ya HEC hydration. Nthawi zambiri, kutentha kwamadzi kumatha kufulumizitsa njira ya hydration ya HEC. Mwachitsanzo, m'madzi ofunda, HEC imathamanga mofulumira kuposa madzi ozizira. Komabe, kutentha kwa madzi komwe kumakhala kokwera kwambiri kungapangitse HEC kusungunuka mosagwirizana ndi kupanga magulu, choncho nthawi zambiri amalangizidwa kuti azitha kutentha kwa madzi pakati pa 20 ° C ndi 40 ° C.
Kuthamanga kwachangu ndi njira: Kugwedeza ndi njira yofunikira yolimbikitsira HEC hydration. Kuthamanga kothamanga kwambiri, kumachepetsa nthawi ya hydration ya HEC nthawi zambiri. Komabe, kuchulukitsitsa kumatha kuyambitsa thovu lochulukirapo, zomwe zimakhudza mtundu wa yankho. Nthawi zambiri tikulimbikitsidwa kuwonjezera ufa wa HEC pang'onopang'ono ndi liwiro lotsika loyambitsa kuti tipewe mapangidwe a ma agglomerates ndikukhalabe otakasuka pang'ono panthawi yonse ya hydration.
Phindu la pH yankho: HEC imakhudzidwa kwambiri ndi pH yamtengo wapatali ndipo imagwira bwino kwambiri m'malo osalowerera kapena acidic pang'ono. Pansi pa zovuta za pH (monga ma asidi amphamvu kapena maziko), kusungunuka kwa HEC kungakhudzidwe, motero kumawonjezera nthawi ya hydration. Choncho, nthawi zambiri amalangizidwa kuti azichita hydration ya HEC m'malo osalowerera ndale pH.
Njira zochiritsira za HEC: Njira zowonongeka monga kuyanika, kugaya, etc. zidzakhudzanso ntchito ya hydration ya HEC. Zokonzedwa bwino za HEC ufa umasungunuka ndikuthira madzi mofulumira. Mwachitsanzo, pre-dispersing HEC ufa mu ethanol kapena glycerin musanawonjezepo madzi akhoza kuchepetsa kwambiri nthawi ya hydration.
Mafunso Ofunsidwa Kawirikawiri Panthawi ya HEC Hydration Process
Panthawi ya hydration ya HEC, mutha kukumana ndi zovuta zina, zomwe nthawi zambiri zimakhudzana ndi njira yogwirira ntchito kapena chilengedwe:
Agglomeration: Pazikhalidwe zosayenera ntchito, HEC ufa akhoza kupanga agglomerations m'madzi. Izi nthawi zambiri zimakhala chifukwa chakuti ufa wa HEC ukakumana ndi madzi, wosanjikiza wakunja nthawi yomweyo umatenga madzi ndi kutupa, kuteteza gawo lamkati kuti lisagwirizane ndi madzi, motero kupanga zipolopolo. Izi kwambiri prolongs nthawi hydration ndi kumabweretsa njira inhomogeneity. Pofuna kupewa izi, nthawi zambiri zimalimbikitsidwa kuti pang'onopang'ono muwaza ufa wa HEC pamene mukuyambitsa.
Vuto la Bubble: Pansi pa kumeta ubweya wambiri kapena kugwedezeka mwachangu, mayankho a HEC amatha kuyambitsa thovu zambiri. Ma thovu a mpweyawa amatha kukhudza mtundu wa yankho lomaliza, makamaka akagwiritsidwa ntchito mu utoto kapena zodzoladzola. Choncho, kusonkhezera mwamphamvu kuyenera kupewedwa panthawi ya hydration, ndipo mapangidwe a thovu akhoza kuchepetsedwa powonjezera defoamers.
Kusintha kwa mamasukidwe amphamvu: Kukhuthala kwa HEC yankho kumawonjezeka pang'onopang'ono pamene njira ya hydration ikupita. Muzinthu zina, monga kupanga zokutira kapena zomatira, kuwongolera kukhuthala ndikofunikira. Ngati nthawi ya hydration ndi yayitali kwambiri, kukhuthala kwake kumatha kukhala kokwera kwambiri, kumakhudza magwiridwe antchito. Choncho, kulamulira molondola hydration nthawi n'kofunika kupeza ankafuna yankho mamasukidwe akayendedwe.
HEC Hydration mu Ntchito Zothandiza
Muzochita zogwira ntchito, njira ya hydration ya HEC nthawi zambiri imayenera kukonzedwa molumikizana ndi njira zina zopangira komanso zofunikira zazinthu. Mwachitsanzo, muzodzoladzola zodzikongoletsera, kuti mupeze mawonekedwe ofunikira ndi kukhazikika, HEC nthawi zambiri imasungunuka m'madzi ofunda ndipo kenaka zina zowonjezera zimawonjezeredwa pang'onopang'ono. Muzopaka zomangamanga, pangakhale kofunikira kusintha liwiro loyendetsa ndi kutentha kwa madzi kuti mufulumizitse njira ya hydration ya HEC, potero kumapangitsa kuti kupanga bwino.
Nthawi ya hydration ya HEC ndi njira yosinthira ndipo imakhudzidwa kwambiri ndi zinthu zingapo. Muzochitika zosiyanasiyana zogwiritsira ntchito, ziyenera kusinthidwa ndi kukonzedwa molingana ndi zikhalidwe zinazake kuti zitsimikizire kuti HEC ikhoza kusungunuka mofulumira komanso mofanana ndikupanga njira yokhazikika. Izi sizimangothandiza kupititsa patsogolo ntchito zopanga komanso zimatsimikizira kuti chinthu chomaliza chimagwira ntchito bwino.
Nthawi yotumiza: Aug-23-2024