Maonekedwe abwino osindikizira zotanuka zomatira zoyera ndi mawonekedwe akunja amtundu wake ndi mtundu wake, womwe umaphatikizapo mawonekedwe amtundu, kuwongolera komanso kutulutsa kwamadzi osindikizira zotanuka zoyera zoyera. Maonekedwe a zotanuka zotanuka zomatira zoyera zowoneka bwino ziyenera kukhala zamadzimadzi zofananira, zoyera za viscous semi-phala, wosakhwima komanso wokwanira, madzimadzi abwino, komanso pamwamba ponyezimira. Komabe, osauka khalidwe kusindikiza zotanuka zomatira woyera nthawi zambiri layered kulimba, fluidity osauka, flocculation ndi kulekana madzi, kukhuthala kwambiri, ndi phala ngati thupi pa yosungirako, amene zimakhudza mwachindunji khalidwe lake, mtundu, kuphimba mphamvu, kukana madzi, kusanja, Kuwonekera, gloss, zokolola zamtundu ndi zina.
Pali zinthu zambiri zomwe zimakhudza mawonekedwe osindikizira zotanuka zomatira zoyera: zopangira monga utomoni (zomatira) wetting ndi dispersing wothandizira, thickener, filler ndi chilinganizo chake ndi kupanga ndondomeko zidzakhudza izo.
Zifukwa Zomwe Zimakhudza Mawonekedwe Abwino a Kusindikiza Koyera Koyera Mucilage
1. Mafuta ndi chinthu chopanga filimu chosindikizira zotanuka zoyera zomatira. Panthawi ya polymerization ya utomoni, kutentha, nthawi, kuthamanga, kuteteza kutentha, kuthamanga kwachangu ndi kuwonjezera zowonjezera kumayambitsa kusakwanira kwa mankhwala ndi zotsalira Ma monomers ochuluka kwambiri amachititsa kuti mankhwala asasunthike komanso kuti asasunthike, ndipo utomoniwo udzasungunuka ndikugwirizanitsa. , zomwe zimapangitsa kusindikiza kwa zotanuka zotanuka zomatira, fungo lamphamvu, kusamata bwino, kutsekereza maukonde ndi zinthu zina zosakhazikika. Choncho, utomoni uyenera kukhala ndi kukhazikika kwa mankhwala, kukhazikika kosungirako, kusungunuka kwabwino, kumamatira mwamphamvu, kufewa komanso kusakhala ndi ndodo.
2. Kutengera kuthamanga kwa matope (lamulo la Stokes)
V=218r2(P-P1)/η
Mu chilinganizo: V-kugwa liwiro, ㎝/s; r-tinthu utali wozungulira, ㎝;
Kuchulukana kwa P-pigment particle, g/cm3; Kuchuluka kwa madzi a P1, g/cm3
η-kukula kwa tinthu tamadzi, 0.1pa.s
Kuthamanga kwa sedimentation kwa filler kumakhala ndi ubale wambiri ndi fineness yopera, ndiko kuti, kukula kwa fineness kugaya, kuthamanga kwa sedimentation kwa filler kudzachulukitsidwa. Kusindikiza zotanuka zomatira woyera adzalekanitsa madzi ndi flocculate mu zigawo mu nthawi yochepa. Chifukwa chake fineness wamba ndi mkati 15-20μm. Komabe, tinthu tating'onoting'ono ta pigment timangochedwa kukhazikika ndipo sizilepheretsa kukhazikika. Kusindikiza zotanuka guluu woyera ndi viscous madzi ndi sanali Newtonian fluidity, ndi mamasukidwe akayendedwe ake ayenera kuyezedwa ndi viscometer rotational.
3. Mphamvu yosindikiza zowonjezera zotanuka zoyera zomatira
The chonyowetsa ndi kubalalitsa wothandizira mu kusindikiza zotanuka woyera mucilage akhoza wogawana kumwaza fillers zosiyanasiyana. Maukonde otayirira amalowetsedwa m'mapangidwe ake kuti tinthu tating'onoting'ono tiyimitse popanda dothi, kuchepetsa kukhuthala kwa slurry, ndikuletsa kusindikiza kwa mucilage zotanuka kuti zisagwedezeke. ndi mvula layering; Kuphatikiza kwa kusanja kumachepetsa kudziletsa pakati pa unyolo wa macromolecular, kumachepetsa kukangana kwa zinthu ndikuchepetsa kukhuthala. The thickener amagwira ntchito yofunika kwambiri pakusintha mawonekedwe a zotanuka zoyera zomatira.
4. Chikoka cha kusindikiza zotanuka woyera guluu kupanga ndondomeko
Kuthamanga kwambiri kwa agitator kudzachititsa kuti utomoni uwonongeke ndi kumeta ubweya wambiri, ndipo kuwonjezera kolakwika kwa zowonjezera monga dispersants, othandizira otaya, ndi thickeners kudzachititsanso kuti demulsification ya zosindikizira zotanuka zoyera ndi mapangidwe a gel osakaniza. Kuwongolera nthawi, kutentha ndi kukonza bwino kwazinthu popanga.
Maonekedwe Njira Yabwino Yosindikizira Glue Yoyera Yoyera
1. Sankhani utomoni woyenerana ndi kapangidwe ka fomula
Utomoni ndiye gawo lofunikira kwambiri pakupanga zotanuka zoyera zomatira. Ma resins osiyanasiyana amakhala ndi kukula kwa tinthu tating'ono, kukhazikika kwa ion mankhwala, kukhazikika kwamakina, mafuta-mu-mafuta, mafuta m'madzi ndi hydrophilicity, omwe amakhudza kwambiri mawonekedwe. Choncho, posankha utomoni, m'pofunika kuganizira mozama za makhalidwe a utomoni wokha, makamaka kugwirizana kwa utomoni, kuti agwirizane kusankha fillers ndi zina mu ndondomeko chilinganizo.
2. Fananizani bwino ndi dispersant ndi leveling wothandizira
Othandizira olemetsa ndi otulutsa opangidwa ndi opanga osiyanasiyana ali ndi mitundu yosiyanasiyana ya HLB. Nthawi zambiri, ma dispersants ndi ma leveling agents (otengera madzi) okhala ndi ma HLB akuluakulu amachepetsa kukhuthala kwadongosolo; ndi kuwonjezeka kwa makhalidwe a HLB, mitundu yosiyanasiyana ya obalalitsa ndi yoyanjanitsa idzachepetsa kukhuthala kwa dongosolo ndikukhudza utomoni Komanso zazikulu. The hydrophilic dispersing and leveling agent imathandizira kukhazikika kwa zomatira zotanuka zoyera, ndipo hydrophobic dispersing and leveling agent imathandizira kukana kwa guluu losindikiza loyera pambuyo popanga filimu. Chifukwa chake, kuphatikiza kwa hydrophilic ndi hydrophobic dispersing and leveling agents kumatha kukonza bwino kusungirako zotanuka zoyera zomatira. Ngati zowonjezera zowonjezera ndi zowonjezera ziwonjezedwa, hydrophilicity yake ndi fluidity zidzawongoleredwa, koma kufulumira kwake kutsuka kudzachepetsedwa ndipo kukana kwake kwa madzi kudzawonongeka. Ngati wobalalitsa pang'ono ndikuwonjezedwa, izi zimakhudza mwachindunji mawonekedwe ake, motero ziyenera kuyendetsedwa pakati pa 3% -5%.
3. Kusankhidwa koyenera kwa zokhuthala kuti zithandizire kusindikiza zotanuka zoyera zomatira
Pakali pano, zokhuthala zomwe zimagwiritsidwa ntchito posindikiza zotanuka zomatira zoyera ndizo: polyacrylic acid, cellulose ether, alkali-soluble acrylic, ndi non-ionic associative polyurethane.
Ma cellulose thickeners (makamaka kuphatikiza hydroxypropyl methyl cellulose, hydroxyethyl cellulose, ndi hydroxypropyl cellulose) ali ndi mphamvu yokhuthala kwambiri komanso osasunthika bwino, koma osasunthika komanso osavuta kupangitsa zilembo zapaintaneti posindikiza pazenera, ndipo amakhala ndi zotsatira zina pakuwala kwa slurry. Ma polyurethane thickeners ndi okwera mtengo kwambiri ndipo sagwiritsidwa ntchito kawirikawiri posindikiza zotanuka zoyera zomatira. Ma polyacrylic acid thickeners ali ndi zinthu zabwino zowongolera, sizosavuta kupanga zilembo zamaukonde, sizikhudza kung'anima kwa slurry, amakhala ndi kukana kwamadzi bwino komanso kukhazikika kwachilengedwe, komanso amalumikizana bwino, kotero kuti maulalo a molekyulu amapangidwa pakati pa tinthu tating'onoting'ono, zomwe zimapangitsa Resin -filler-resin imapanga dongosolo la maukonde, kupereka liwiro lalitali komanso lalitali kwambiri, zomwe zimapangitsa kuti guluu losindikizira loyera likhale ndi rheology yabwino, ndikupanga mawonekedwe amadzimadzi oyera amkaka.
4. Gwiritsani ntchito njira yoyenera yopangira
The thickener ayenera kuchepetsedwa ndi madzi musanawonjezere. Utomoni uyenera kuwonjezeredwa poyamba, ndipo choyambitsa chizindikirocho chiyenera kusungidwa pa liwiro lapakati-pang'onopang'ono kuti asawonongeke chifukwa cha kumeta kwambiri. Panthawi yopanga, kukhuthala kwa slurry kuyenera kuwonedwa nthawi iliyonse, ndipo kuthamanga ndi kutentha kwa slurry pakupanga ziyenera kuyendetsedwa bwino. Ndipo musanayambe kusintha slurry, onjezani kuchuluka koyenera kwa surfactant kuteteza tinthu ta utomoni ku demulsification.
Nthawi yotumiza: Mar-04-2023