Kugwiritsa Ntchito Inki Yotetezedwa ndi Malo Ozikidwa ndi Madzi Pakuyika Chakudya Chowonetsedwa

Kugwiritsa Ntchito Inki Yoteteza Zachilengedwe Pamadzi Pakuyika Chakudya

Kufotokozera Kwachidule:

Monga mtundu watsopano wa ma CD ndi zinthu zosindikizira, mwayi waukulu wa inki yochokera kumadzi ndikuti ulibe zosungunulira za organic.Kugwiritsa ntchito kwake kumachepetsa kuchuluka kwa ma volatile organic compounds (VOCs), sikuwononga thanzi la opanga inki ndi osindikiza, komanso kumapangitsa kuti chilengedwe chikhale bwino.Choncho, angatchedwe inki chilengedwe wochezeka.Makhalidwe akuluakulu a inki yochokera m'madzi sakuwononga chilengedwe, osakhudza thanzi la munthu, osayaka, komanso chitetezo chabwino.Sizingachepetse poizoni wotsalira pamwamba pa zinthu zosindikizidwa, zikhale zosavuta kuyeretsa zida zosindikizira, komanso kuchepetsa chiopsezo cha moto chomwe chimayambitsidwa ndi magetsi osasunthika ndi zosungunulira zoyaka.Kuwonjezera pa kuteteza chilengedwe, makhalidwe osindikizira a inki yochokera kumadzi ndi abwino.Inki yopangidwa ndi madzi imakhala ndi ntchito yokhazikika, sichiwononga mbale, ntchito yosavuta, mtengo wotsika, kumamatira bwino pambuyo pa kusindikiza, kukana madzi amphamvu komanso kuyanika mofulumira.Ma inki opangidwa ndi madzi samangogwiritsidwa ntchito posindikiza ma flexographic ndi kusindikiza pazenera ndi kuthekera kwakukulu kwachitukuko.

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Inki yamadzi imatchedwa inki yamadzi mwachidule.Inki yopangidwa ndi madzi yotchedwa flexographic imatchedwanso inki yamadzimadzi.Amapangidwa makamaka ndi utomoni wosungunuka m'madzi, organic pigment, zosungunulira ndi zina zowonjezera kudzera mukupera pawiri.Utomoni wamadzi ndi mtundu watsopano wa utomoni womwe umagwiritsa ntchito madzi m'malo mwa zosungunulira za organic ngati dispersion medium.Amasakanikirana ndi madzi kuti apange yankho.Madzi atatha kuphulika, filimu ya resin imapangidwa.Utomoni wopangidwa ndi madzi si utomoni wamadzi wokhawokha koma ndi filimu yomwe imapezeka pambuyo pa kusungunuka kwa madzi.Polyurethane yamadzi, monga nthumwi, imatha kugwiritsidwa ntchito kwambiri pakupaka, zomatira, zokutira za nsalu ndi zomalizitsa, zida zomalizitsa zikopa, othandizira opangira mapepala apamwamba komanso othandizira mankhwala a fiber pamwamba.Inki yochokera kumadzi ndi yabwino makamaka kwa chakudya, chakumwa, mankhwala, fodya, vinyo, zoseweretsa za ana ndi zinthu zina zonyamula ndi kusindikiza ndi zofunika zaukhondo, m'malo mwa zosungunulira zochokera m'magawo osiyanasiyana.Monga chimodzi mwazinthu zisanu zosindikizira, inki yochokera kumadzi imakhala ndi gawo lofunikira pakusindikiza komanso kusindikiza.Kugawika koyenera kwa inki ndi ulalo wofunikira kuonetsetsa kuti zosindikizidwa zili bwino.Inki yochokera kumadzi yakhala ikutenga gawo lalikulu pakusindikiza kwa flexographic chifukwa cha zabwino zake pakuteteza chilengedwe komanso chuma.
Kukula kolimba kwamakampani osindikizira obiriwira kudzakulitsa mpikisano pamsika wa inki yosindikiza.Tsopano opanga inki atumiza chizindikiro chakuti mtengo wa zipangizo za inki wakwera kwambiri, zomwe zidzawonjezera mtengo wa kupanga ndi kukonza bwino.Izi makamaka chifukwa cha kusowa kwapadziko lonse kwa mitundu ingapo ya mankhwala, omwe ndi zinthu zofunika kwambiri popanga inki.Mpaka pano, kukwera kwa mtengo wamafuta opangidwa ndi petrochemical ndi chifukwa chachikulu chakukwera kwamitengo ya inki.Komabe, ngakhale mtengo wa mafuta utatsika, chifukwa makampani a inki amakhudzidwa ndi kusowa kwa zinthu zopangira mankhwala, makamaka zopangira monga nitrocellulose, acrylic acid, acetic acid ndi titaniyamu woipa, mtengo wa inki udzangowukabe.Pakalipano, mayiko otukuka ndi zigawo akuyesera kupanga ndi ntchito inki kuti pang'onopang'ono m'malo zosungunulira zochokera inki.Kusindikiza ma CD ndi inki yosindikizira madzi monga chinthu chachikulu cha chitukuko chapanga chikhalidwe padziko lapansi.

Makhalidwe A Inki Yotengera Madzi: Kusiyana Pakati pa Wothandizira Ndi Inki Yotengera Mafuta

Ubwino wa polyurethane wa inki makamaka umagwiritsa ntchito aliphatic poliyesitala ndi aliphatic isocyanate monga zida zazikulu zopangira pokonzekera.Poyerekeza ndi zonunkhira za polyurethane, zoyambazo zimakhala ndi kukhazikika kwabwino kwambiri ndipo filimuyo ikapanga filimu imakhala ndi kukana bwino kwachikasu.Pali magulu a polar monga carbamate, urethane, ester bond ndi ether bond mu polyurethane molecular chain segment for inki, omwe amapanga ma hydrogen bond ndi magulu a polar pamwamba pa magawo osiyanasiyana a polar monga pet ndi PA, motero amapanga mgwirizano ndi mphamvu zina zolumikizirana.Pambuyo pa utomoni wosinthidwa wa polyurethane wapangidwa kukhala inki, ukhoza kusindikizidwa pamwamba pa gawo lapansi la pulasitiki la polar ndi kumamatira kwabwino.Utomoni wa inki wa polyurethane nthawi zambiri umapangidwa kuchokera ku polyester kapena polyether polyol, ester ring diisocyanate ndi diamine chain extender.Chifukwa cha kukhazikitsidwa kwa chomangira cha urea mu utomoni wa polyurethane, utomoni wa polyurethane urea (PUU) umapangidwa, womwe uli ndi mphamvu zonyowetsa komanso zobalalitsa ku pigment.
Utomoni wa polyurethane wa inki umagwirizana bwino ndi utomoni wa aldehyde ketone, utomoni wa chloroacetic, etc. ukhoza kuwonjezeredwa bwino mu ndondomekoyi molingana ndi momwe zinthu zilili kuti zitheke kuti inki igwire bwino.Utoto wa inki wa polyurethane umakonzedwa ndikuyambitsa gulu la urea mu gawo lakale la polyurethane molekyulu, zomwe zimathandizira kwambiri kulimba kwa mgwirizano komanso kupanga filimu ya utomoni womwewo.Traditional polyurethane resin ali osiyanasiyana miscibility ndi organic solvents.Komabe, m'kati kukonzekera inki, kuti akonze fluidity ndi mamasukidwe akayendedwe ka inki, m'pofunika kuwonjezera mowa organic solvents, amene kwambiri kuchepetsa bata la utomoni dongosolo ndi chifukwa turbidity, flocculent mpweya ndi zochitika zina chikhalidwe utomoni wa polyurethane.Mu gawo la molekyulu ya polyurethane resin yosindikiza inki, chifukwa cha kukhalapo kwa gulu la urea, utomoni wa polyurethane ndi mowa zimatha kusungunuka.Komabe, tisaiwale kuti zosungunulira mowa akadali zosungunulira pseudo.M'malo osawoneka bwino, chosungunulira cha mowa chimangolowetsa molekyulu ya polyurethane resin, m'malo molowa mu molekyulu ya molekyulu ngati zosungunulira zenizeni, kotero kuti inki yokonzedwa ndi utomoni wa polyurethane imakhala ndi madzi abwino.
Kusiyana kwakukulu pakati pa inki yamadzi ndi inki yochokera ku mafuta ndi zosungunulira.Inki yokhala ndi madzi imagwiritsa ntchito madzi (45% - 50%) monga zosungunulira, zokhala ndi VOC zochepa kwambiri komanso kuwonongeka kwa chilengedwe;Inki yamafuta imagwiritsa ntchito zosungunulira za organic (toluene, xylene, mowa wa m'mafakitale, ndi zina zotero) monga zosungunulira.Inki yopangidwa ndi madzi imagwiritsa ntchito madzi ndi zosungunulira zosungunuka m'madzi monga zigawo zikuluzikulu za mtundu wosungunuka;Palinso inki ya utoto ndi inki ya pigment mu inki yochokera m'madzi, ndipo pH nthawi zambiri imakhala yopanda ndale;Mafuta alinso ndi inki ya utoto ndi inki ya pigment, ndipo pH nthawi zambiri imakhala acidic.Inki yochokera kumadzi ndi inki yochokera kumafuta sizingasakanizidwe pamutu womwewo wosindikiza.
Mu inki yokhala ndi madzi, utomoni wopangidwa ndi madzi ndi gawo lofunikira la inki yokhala ndi madzi.Kulumikiza kwa inki kumakhudza mwachindunji ntchito yomatira, kuthamanga kwa kuyanika, magwiridwe antchito a anti fouling ndi kukana kutentha kwa inki, komanso zimakhudza magwiridwe antchito a gloss ndi inki.Choncho, kusankha utomoni woyenera wamadzi ndi chinsinsi chokonzekera inki yamadzi.Iyenera kukhala yogwirizana bwino ndi ma colorants, kuthamanga kwamphamvu kwambiri pambuyo pa kusindikiza ndi kupanga filimu, kukana kuvala, kukana zikande, kukana kutentha kwabwino, kuwoloka kosavuta komanso kupanga filimu.Ma resin omwe amagwiritsidwa ntchito kwambiri m'madzi amaphatikizapo utomoni wa polyurethane wamadzi, acrylic resin, polyvinyl mowa ndi epoxy resin.
Madzi a polyurethane resin amamwazikana m'madzi poyambitsa magulu a hydrophilic mu tcheni cha polyurethane.Madzi a polyurethane resin ali ndi ubwino wogwiritsa ntchito mosavuta, kugwira ntchito mokhazikika, kumamatira mwamphamvu, kuwala kwakukulu komanso kukana kutentha kwabwino.Itha kukhala yoyenera panjira zosiyanasiyana zosindikizira, makamaka zosindikizira pazenera, mabokosi oyika mapulasitiki ndi makanema ophatikizika.