Momwe mungathetsere vuto la mawanga oyera pamapepala opanda mpweya?

Pepala lopanda kaboni amagawidwa kukhala mapepala apamwamba, mapepala apakati ndi mapepala apansi. Pepala lopanda kaboni limagwiritsidwa ntchito kwambiri kuti likhale losavuta, losavuta komanso laukhondo. Maonekedwe, mawonekedwe owonetsera mtundu, ntchito ya inki, ndi mphamvu ya pamwamba ya pepala lopanda mpweya zonse zidzakhudza kugwiritsa ntchito pepala lopanda mpweya. Kuphatikiza pa zoyera zoyera komanso zoyera kwambiri, mawonekedwe a pepala lopanda mpweya amakhalanso ndi mitundu monga chikasu, buluu, ofiira ndi obiriwira. Ngakhale kuoneka kwa pepala lakuda lopanda mpweya ndikokongola, ndikosavuta kuyambitsa zovuta zina, monga mawanga oyera pamapepala.

Vuto la mawonekedwe oyera a pepala lopanda mpweya makamaka limapezeka kumbali ya CF ya pepala. Pali zinthu zambiri zomwe zimayambitsa mawanga oyera kumbali ya CF. Kawirikawiri, pali mbali zotsatirazi:

Kutsika kwabwino kwa dispersant kumapangitsa kuti utoto ukhale wosabalalika mu utoto; pamene kuchuluka kwa dispersant ndi kochepa, pigment particles osati atakulungidwa ndi dispersant adzakhala flocculate ndi precipitate chifukwa cha kukopa magetsi; pamene kuchuluka kwa dispersant ndi lalikulu kwambiri, mopitirira muyeso dispersant Kuwononga magetsi awiri wosanjikiza opangidwa ndi pigment, kuchititsa wosagwirizana kugawa milandu ndi chifukwa cha mvula. Pamene ❖ kuyanika ntchito pa makina, ndi flocculated pigment particles sangathe TACHIMATA ndi kuyambitsa mawanga woyera pa pepala. Kuchuluka kokwanira kwa dispersant kungadziwike poyesa kuyesa, ndipo nthawi zambiri kuchuluka kwa dispersant kumawonjezera pafupifupi 0.5% -2.5% ya pigment.

Mtengo wa pH umakhudza kwambiri kubalalitsidwa (kukhazikika) kwapepala lopanda mpweya mitundu. Pamene pigment imabalalitsidwa, alkali akhoza kuwonjezeredwa kuti asinthe pH kukhala yamchere, makamaka pakati pa 7.5 ndi 8.5.

Defoamers amachotsa thovu la mpweya mu utoto. Komabe, defoamer nthawi zambiri ndi chinthu chachilengedwe chomwe chimakhala chovuta kusungunuka m'madzi. Kugwiritsa ntchito mopitirira muyeso kapena njira yosayenera yowonjezera idzapangitsa kuti defoamer apange "mtambo wamtambo" pamapepala, zomwe zidzapangitse kuti CF ❖ kuyanika kulephera kugwiritsa ntchito ndikupanga mawanga oyera. Vutoli litha kuthetsedwa mwa kuchepetsa bwino ndikupopera utoto pamwamba pa utoto ndi thovu la mpweya.

Zovala za CF zimakhala ndi thovu zambiri za mpweya, ndipo pamene zokutirazo zikugwiritsidwa ntchito, thovulo limaphulika pamapepala, kuchititsa mawanga oyera. Ichinso ndi chifukwa chachikulupepala lopanda kaboni zimayambitsa matenda a pepala loyera. Njira yothetsera vutoli ndikuwonjezera cholepheretsa chithovu kuti muteteze kubadwa kwa thovu pamene pigment imabalalitsidwa, kapena kuwonjezera defoamer kuchotsa thovu zomwe zachitika kale.

Zida zina zothandizira (makamaka organic zida zothandizira) zowonjezeredwa ku zokutira za CF, ngati khalidwe la mafuta odzola silili labwino, zidzachititsa kuti anthu azibalalitsa bwino ndikumamatira ku pepala, zomwe zimapangitsa kuti zokutira za CF zilephereke kupanga mawanga oyera. Chifukwa chake gwiritsani ntchito zida zabwino zothandizira mankhwala momwe mungathere.