1. Tanthauzo ndi ntchito ya Thicker
Zowonjezera zomwe zimatha kuwonjezera chidwi cha utoto wamadzi opangidwa ndi madzi zimatchedwa okumba.
Otsatsa amatenga gawo lofunikira pakupanga, kusungirako ndi kumanga zokutira.
Ntchito yayikulu ya Thicker ndikuwonjezera mafatiwo kuti akwaniritse zofunikira zosiyanasiyana kugwiritsa ntchito. Komabe, mawilo amafunikira chifukwa chokutidwa ndi chinjoka pamagawo osiyanasiyana ndi osiyana. Mwachitsanzo:
Panthawi yosungirako, ndikofunikira kukhala ndi mawonekedwe owoneka bwino kuti uletse pigment kuti usasunthike;
Panthawi yomanga, ndikofunikira kukhala ndi mawonekedwe owoneka bwino kuti uwonetsetse kuti utoto umakhala ndi mphamvu yopanda utoto kwambiri;
Pambuyo pomanga, zikuyembekezeka kuti mafayilo amatha kubwerera msanga kuti atuluke kwambiri pambuyo poti apewe kusanja.
Madzi a zokumba zamadzi ndi osadziwika.
Pamene mafayilo a utoto amachepetsa ndi kuwonjezeka kwa mphamvu ya mbedza, imatchedwa madzi a pseudoplactic, ndipo utoto wambiri ndi madzi a pseudoplactic.
Pamene mayendedwe otuluka a pseudoplastic amagwirizana ndi mbiri yake, ndiye kuti, ndi nthawi yodalira nthawi, amatchedwa thixotropic madzi.
Tikamapanga zokutira, nthawi zambiri timayesetsa kupanga zokutira Thixotropic, monga kuwonjezera zowonjezera.
Pamene thixotropy ya zojambulazo ndi koyenera, imatha kuthana ndi zomwe zimatsutsana ndi magawo osiyanasiyana a zokutira, ndikukwaniritsa zosowa zaukadaulo zokutira, zomangamanga, ndi zotumphukira.
Otsatsa ena amatha kupereka utoto ndi ma thixotropy, kuti ali ndi mafayilo apamwamba opumira kapena pamtengo wotsika (monga kusungirako utoto kuti asakhazikike. Ndipo pansi pa mitengo yautali (monga zokutira), zimawoneka ngati zowoneka bwino, kuti zoumba zikhale zokwanira kuyenda ndikupanga.
Thixotropy akuyimiriridwa ndi thixotropic index tinthu ta ndikuyeza ndi Brookfield Wreeterter.
Ti = ma visction
2. Mitundu ya otuwa ndi zovuta zawo pakukula
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Mitundu ya atorganic imaphatikizapo Bentonite, Alandulgite, Aluminium Magnesium silikaum, etc.
Kuchokera momwe zimapangidwira kwa zovuta zomwe zimabala, otuwa amagawidwa mu thixotropic m'matumba ndi othandiza. Pankhani ya zofunikira zomwe zimachitika, kuchuluka kwa kukula kwake kuyenera kukhala kocheperako komanso kokulirapo; Sizovuta kulongedwa ndi michere; Kutentha kapena kupukusa kwa dongosololi kumasintha, mawidwe okutirawo sadzachepetsedwa kwambiri, ndipo pigment ndi filler sadzakhala woponyedwa. ; Kukhazikika kwabwino kosungira; Kusungidwa kwabwino madzi, palibe chowopsa chowopsa ndipo palibe zovuta zomwe zimachitika pakugwiritsa ntchito filimu yokutidwa.
①cellulose trickener
Ma Traulose ophatikizika omwe amagwiritsidwa ntchito pazokutira makamaka methylcellulose, hydroxenulose, hydroxethycellulose ndi hydroxypropylmeloulose, ndipo izi zimagwiritsidwa ntchito kawiri.
Hydroxyethyl cellulose ndi mankhwala omwe amapezeka ndikusintha magulu a hydroxyl pamagawo a glucose pa cellulose ndi magulu a hydroxyethyll. Zomwe zimapangidwa ndi mitundu ya zinthuzo zimasiyanitsidwa makamaka malinga ndi kuchuluka kwa zolowa m'malo mwake.
Zosiyanasiyana za hydroxethyl cellulose zimagawidwanso mtundu wazosinthika zodziwika bwino, mtundu wobadwira mwachangu ndi mtundu wokhazikika. Ponena za njira yogwiritsira ntchito, hydroxyethyl cellulose imatha kuwonjezeredwa pamagawo osiyanasiyana pakupanga zokutira. Mtundu wobalalika msanga umatha kuwonjezeredwa mwachindunji mu mawonekedwe owuma. Komabe, mtengo wa pH usanayambitse usakhale wosakwana 7, makamaka chifukwa masholo osungunuka amasungunuka mkati mwa tinthu tating'onoting'ono, ndipo mtengo wa pH umachulukitsa kuti zisungunuke mwachangu. Njira zofananira zingagwiritsidwenso ntchito kukonzekera ndende inayake yothetseratu komanso kuwonjezera pa zokutira.
Hydroxypropyll methylcellulose ndi mankhwala omwe amapezeka ndikusintha gulu la hlucose pa cellulose ya cellulose ndi gulu lina la methoxypyl. Mphamvu zake zakumwamba ndizofanana ndi za hydroxethyl cellulose. Ndipo imalimbana ndi enzymatic yowonongeka, koma madzi ake osasunthika siabwino ngati a hydroththyl cellulose, ndipo imakuvutitsani pakuwomba. Kwa hydroxypropyl methylcelulose, imatha kuwonjezedwa mwachindunji ku madzi mukamagwiritsa ntchito. Pambuyo poyambitsa ndikubalalitsa, onjezerani zinthu za alkaline monga ma ammonia madzi kusintha mtengo wa PH ndi 8-9, ndikuyambitsa mpaka utasungunuka kwathunthu. Kwa hydroxypropyl methylcellulose popanda chithandizo, imatha kunyowa ndi madzi otentha pamwamba pa 85 ° C asanagwiritsidwe, kenako ndikukakamizidwa ndi madzi ozizira kapena madzi oundana kuti asungunuke kwathunthu.
②norganic trickener
Mtundu wamtunduwu umakhala ndi zinthu zina zapadera, monga Bentonite, magnesium aluminiyamu silika, etc. amadziwikanso ndi mphamvu yabwino, ndipo sangakhudze madzi ophimba. Pambuyo pouma imapangidwa filimu, imapangidwa ngati filimu mufilimu yokutidwa, etc. Chosavomerezeka ndikuti lidzawakhudza kwambiri kuchuluka kwa zokutira.
③ Zopanga polymer ty
Opanga mapulogalamu a polymer amagwiritsidwa ntchito kwambiri ku ma acrylic ndi poureurethane (ophatikizira Otsatsa). Acrylic okulitsa acrylic nthawi zambiri okhala ndi ma gasboxyl. M'madzi okhala ndi mtengo wa 8-10, gulu la carboxyl limasungunuka ndipo limatupa; Mtengo wa PH ndi wokulirapo ngakhale 10, umasungunuka m'madzi ndipo umataya kukula, kotero kuti kukula kwa kukula kwake kumakhala kovuta kwambiri ndi mtengo wa pH.
Chithandizo cha kukula kwa ma acrylate chotsirizika ndichakuti tinthu ake titha kutsatsa pamwamba pa tinthu tating'onoting'ono tating'ono tating'onoting'ono titapakhomo, ndipo zimapangitsa kuti madzi azitulutsa, amalepheretsa mapangidwe a utoto. ; Chachiwiri, kutupa kwa thumbo kumawonjezera mafayilo a gawo lamadzi.
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Mphamvu ya mtundu wa Thickener pazachinyengo zomwe zikuyenda motere:
Kuchuluka kwa kukula kwa kukula kwake, kusuta maviyikidwe kwa utoto kumawonjezera kwambiri, ndipo kusintha kwa kusintha kwa Visctic kumagwirizana posinthana ndikamagwira ntchito yamphepete.
Ndi mphamvu ya Thicker, mafayilo a penti amatsikira mwachangu ikagonjetsedwa ndi mphamvu ya Sheard, akuwonetsa kuti pali pseudophity.
Pogwiritsa ntchito cellose yosinthika yosinthika (monga Eb451FQ), pamitengo yam'mimba, mafayilo akadali okwera pomwe kuchuluka kwake ndikokulirapo.
Kugwiritsa ntchito mabizinesi ophatikiza poldurethane (monga wt105a), kuchuluka kwa mitengo yayikulu, mamasukidwe amapezekabe pomwe kuchuluka kwake ndikokulirapo.
Kugwiritsa ntchito acrylic okulitsa ma acrylic (monga Asex0), ngakhale mamasukidwe okhazikika akakwera msanga pomwe kuchuluka kwake ndi kwakukulu, ma viscy amachepetsa msanga pamlingo wapamwamba.
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(1) Chipangizo cha Thirani
Cellulose ether ndi alkali-swellable a ma acrylable a ma acrylable amangophimba gawo la madzi, koma osakhumudwitsa ena mu utoto wamadzi ndi ma tinthu a emulsion, kotero chizolowezi cha utoto sichingasinthidwe.
Otsatsa ophatikizana amadziwika kuti kuwonjezera pakukula kudzera hydration, amakulanso kudzera m'mayanjano, komanso zigawo zina mu kachitidwe. Mayanjanowa amapepuka pamitengo yapamwamba yosewerera komanso amacheza nawo mitundu yotsika ku Shear, kulola kuti chiwombacho chikusinthidwe.
Chithandizo cha kukula kwa thunthu lophatikiza ndi loti Molekyu yake ndi mzere wa hydrophilic unyolo, ndiye kuti, ili ndi magulu a hydrophobic ndi mamona a hydrophobic. Zachilengedwe. Mamolekyu oterewa sangakhale ongodzitama ndi kuwaza gawo la madzi, komanso amapanga michere yam'madzi pomwe ndende yake yothetseratu. Mitimayo imatha kulumikizana ndi tinthu tating'onoting'ono ta emulsion ndi tinthu tating'onoting'ono tomwe timasangalatsa timakhala ndi mawonekedwe a ma network atatu, ndipo zimalumikizidwa ndikukakamira mafayilo a dongosolo.
Chofunika kwambiri ndichakuti mayanjano awa ali munthawi yamphamvu kwambiri, ndipo mipembedzoelles omwe amagwirizanitsa amatha kusintha maudindo awo akakumana ndi mphamvu zakunja, kuti zigwirizane ndi katundu. Kuphatikiza apo, popeza moleklulu ili ndi ma mamolekle angapo, izi zimachepetsa kutembenuka mamolekyulu amadzi kuti asamuke ndikuwonjezera mafayilo a gawo lam'madzi.
(2) Udindo wa zokutira
Ambiri mwa omasulira ophatikizira ndi polyurethanes, ndipo zolemera zawo zazitali zimakhala pakati pa 103-104 zowongolera, madongosolo awiri a mitu yotsika kwambiri ndi ma cellose olemera pakati pa 105-106. Chifukwa cha kuchuluka kochepa, kuchuluka kwa kuchuluka kwa kuchuluka kwa hydration kumakhala kocheperako, kotero mawonedwe amapinki ndi okoma kuposa omwe sakuphatikizana.
Chifukwa cha kuchuluka kwa kuchuluka kwa chinsinsi cha kuphatikizira, kuphatikizika kwake kwapakatikati kumadzi kumakhala ochepa, kotero kukula kwake pa gawo lamadzi silofunika. Munthawi yotsika mtengo, kutembenuka pakati pa mamolekyulu silongokhala kuwonongedwa pakati pa mamolekyulu, chilengedwe chonse chimakhala ndi vuto, ndipo mamasuki amapezeka kwambiri. Chifukwa chake, kuphatikizira Thickener kumapangitsa kupaka utoto-utoto wamadzi kumawonetsa kuti akuwoneka ngati malo otsika a Shear.
Otsatsa ophatikizana ndi mphamvu pakati pa mamolekyulu chifukwa cha mayanjano omwe ali pakati pa tinthu tambiri mu gawo. Mwanjira imeneyi, mphamvu zambiri zimafunikira kuti muthetse kucheza pakati pa mamolekyulu ometa ubweya, ndipo mphamvu yosemphanayo iyenera kukwaniritsa gawo lomwelo limakhala lalikulu, kotero kuti dongosololi likuwonetsa kuchuluka kwa mitsuko yayitali. Mawonekedwe akuwoneka. Mawonekedwe okwera kwambiri komanso ma virus otsika otsika kwambiri amatha kungopanga zipsinjo zokhala ndi zojambulajambula mu utoto wa utoto, ndiye kuti, otsatsa awiriwa amatha kugwiritsidwa ntchito limodzi kuti asinthe utoto wa latex. Kugwiritsa ntchito mosiyanasiyana, kuti tikwaniritse zofunikira zokutira filimu yayikulu ndi filimu yokutira.
Post Nthawi: Nov-24-2022