M'makampani opanga utoto, kukhazikika ndi kukhazikika kwa phala lamtundu ndikofunikira. Komabe, panthawi yosungiramo ndikugwiritsa ntchito, phala lamtundu nthawi zambiri limakhala ndi mavuto monga thickening ndi agglomeration, zomwe zimakhudza momwe ntchito yomanga imagwirira ntchito komanso khalidwe lopaka.Hydroxyethyl cellulose (HEC), monga chowonjezera chosungunuka cha polima chosungunuka m'madzi, chimakhala ndi gawo lofunikira pakupanga utoto. Itha kusintha bwino mawonekedwe amtundu wa phala, kupewa kuphatikizika, ndikuwongolera kukhazikika kosungirako.
1. Zifukwa thickening ndi agglomeration wa utoto mtundu phala
Kukula ndi kuphatikiza kwa phala la utoto nthawi zambiri kumakhudzana ndi izi:
Osakhazikika pigment kubalalitsidwa: The pigment particles mu mtundu phala akhoza flocculate ndi kukhazikika pa yosungirako, chifukwa kwambiri m'deralo ndende ndi agglomeration.
Kutuluka kwa madzi m'dongosolo: Pakusungirako, kutuluka kwa gawo la madzi kumapangitsa kuti kukhuthala kwa phala lamtundu kuchuluke, ndipo ngakhale kupanga zinthu zouma pamwamba.
Kusagwirizana pakati pa zowonjezera: Zina za thickeners, dispersants kapena zowonjezera zimatha kuchita ndi wina ndi mzake, zomwe zimakhudza rheological properties za phala lamtundu, zomwe zimachititsa kuti kuwonjezereka kwamakamaka kuwonjezereka kapena mapangidwe a flocculent.
Mphamvu ya kukameta ubweya wa ubweya: Kukondoweza kwa nthawi yayitali kapena kupopera kungayambitse kuwonongeka kwa mawonekedwe a polima mu dongosolo, kuchepetsa kusungunuka kwa phala lamtundu, ndikupangitsa kukhala kowoneka bwino kapena kophatikizana.
2. Njira yogwiritsira ntchito hydroxyethyl cellulose
Hydroxyethyl cellulose (HEC) ndi yochokera ku cellulose yopanda ionic yokhala ndi makulidwe abwino, luso losintha ma rheological komanso kukhazikika kwa kubalalitsidwa. Njira yake yayikulu yopangira utoto wa utoto imaphatikizapo:
makulidwe ndi rheological kusintha: HEC akhoza kuphatikiza ndi mamolekyu madzi kudzera hydrogen chomangira kupanga khola hydration wosanjikiza, kuonjezera mamasukidwe akayendedwe a dongosolo, kuteteza pigment particles kuchokera agglomerating ndi kukhazikika, ndi kuonetsetsa kuti phala mtundu amakhalabe fluidity wabwino pa kuyima kapena kumanga.
Khola kupezeka dongosolo: HEC ali wabwino padziko ntchito, akhoza kuvala pigment particles, kumapangitsanso dispersibility awo mu gawo madzi, kuteteza agglomeration pakati particles, motero kuchepetsa flocculation ndi agglomeration.
Anti-water evaporation: HEC imatha kupanga gawo lina loteteza, kuchepetsa kuchuluka kwa madzi a nthunzi, kuteteza phala lamtundu kuti lisakhwime chifukwa cha kutaya madzi, ndikuwonjezera nthawi yosungira.
kukameta ubweya kukana: HEC amapereka utoto wabwino thixotropy, amachepetsa mamasukidwe akayendedwe pansi mkulu kukameta ubweya mphamvu, facilitates kumanga, ndipo mwamsanga kubwezeretsa mamasukidwe akayendedwe pansi otsika kukameta ubweya mphamvu, kuwongolera utoto wa odana ndi sagging ntchito.
3. Ubwino wa hydroxyethyl cellulose mu utoto wa utoto
Kuwonjezera ma cellulose a hydroxyethyl pamakina opaka utoto ali ndi zabwino izi:
Kupititsa patsogolo kukhazikika kwa kusungirako kwa phala lamtundu: HEC imatha kuteteza pigment sedimentation ndi agglomeration, kuonetsetsa kuti phala lamtundu limasunga madzi amtundu umodzi pambuyo posungira nthawi yayitali.
Kupititsa patsogolo ntchito yomanga: HEC imapatsa phala lamtundu wabwino kwambiri, zomwe zimapangitsa kuti zikhale zosavuta kutsuka, kugudubuza kapena kupopera panthawi yomanga, ndikuwongolera kusinthika kwa utoto.
Kupititsa patsogolo kukana kwa madzi: HEC ikhoza kuchepetsa kusintha kwa viscosity komwe kumachitika chifukwa cha kutuluka kwa madzi, kuti phala lamtundu likhalebe lokhazikika pansi pazikhalidwe zosiyanasiyana.
Kugwirizana kwamphamvu: HEC ndi thickener non-ionic, yomwe imakhala yogwirizana bwino ndi dispersants ambiri, wetting agents ndi zina zowonjezera, ndipo sizingayambitse kusakhazikika mu dongosolo lokonzekera.
Chitetezo ndi chitetezo cha chilengedwe: HEC imachokera ku cellulose yachilengedwe, imakwaniritsa zofunikira zachitetezo cha chilengedwe, sichitulutsa zinthu zovulaza, ndipo ikugwirizana ndi chikhalidwe chobiriwira ndi chitetezo cha chilengedwe cha zokutira zokhala ndi madzi.
4. Kugwiritsa ntchito ndi malingaliro a hydroxyethyl cellulose
Kuti mutenge bwino gawo la HEC, mfundo zotsatirazi ziyenera kuzindikirika mukamagwiritsa ntchito phala lopaka utoto:
Kuwongolera koyenera kwa kuchuluka kwa kuwonjezera: Kuchuluka kwa HEC nthawi zambiri kumakhala pakati pa 0.2% -1.0%. Kuchuluka kwapadera komwe kumagwiritsidwa ntchito kumayenera kusinthidwa molingana ndi zosowa za dongosolo lophimba kuti zisawonongeke kwambiri komanso zimakhudza ntchito yomanga.
Kukonzekera kusanachitike: HEC iyenera kumwazikana ndi kusungunuka m'madzi poyamba, kenako ndikuwonjezeredwa ku dongosolo la phala lamtundu mutatha kupanga njira yofananira kuti iwonetsetse kuti imagwiritsa ntchito mphamvu zake zowonjezera ndi zowonongeka.
Gwiritsani ntchito ndi zowonjezera zina: Itha kufananizidwa bwino ndi zotulutsa, zonyowetsa, ndi zina zambiri kuti zithandizire kukhazikika kwamtundu wa pigment ndikuwongolera magwiridwe antchito.
Pewani kutentha kwakukulu: Kusungunuka kwa HEC kumakhudzidwa kwambiri ndi kutentha. Ndibwino kuti musungunuke pa kutentha koyenera (25-50 ℃) kuti mupewe kuphatikizika kapena kusungunuka kosakwanira.
Hydroxyethyl celluloseili ndi mtengo wofunikira wogwiritsa ntchito pamakina a utoto wa utoto. Ikhoza kuthetsa mavuto a mtundu phala thickening ndi agglomeration, ndi kusintha kusunga bata ndi ntchito yomanga. Kukhuthala kwake, kukhazikika kwake komanso kukana kusungunuka kwa madzi kumapangitsa kuti ikhale chowonjezera chofunikira pa utoto wamadzi. Muzogwiritsira ntchito, kusintha koyenera kwa mlingo wa HEC ndi njira yowonjezera kungapangitse ubwino wake ndikuwongolera mtundu wonse wa utoto. Pakupangidwa kwa utoto wogwiritsa ntchito madzi ogwirizana ndi chilengedwe, chiyembekezo chogwiritsa ntchito HEC chidzakhala chokulirapo.
Nthawi yotumiza: Apr-09-2025