Mitundu ndi Kagwiritsidwe ntchito ka mankhwala a pepala

Mankhwala a mapepala amatanthauza mankhwala osiyanasiyana omwe amagwiritsidwa ntchito popanga mapepala, nthawi zambiri zothandizira. Kuphatikizapo zinthu zambiri:

pulping chemicals (monga zothandizira kuphika, ma deinking agents, etc.)

1. Zothandizira kuphika: zomwe zimagwiritsidwa ntchito kufulumizitsa liwiro ndi zokolola za kuphika kwa mankhwala, zomwe zimagwiritsidwa ntchito nthawi zambiri zimakhala ndi anthraquinone ndi quinone zotumphukira, zowonjezera ndi zina zotero.
2. Deinking agent: Amagwiritsidwa ntchito pochotsa mapepala owonongeka ndi kubwezeretsanso, zomwe zingathe kusintha kuyera kwa zamkati ndikuchotsa zonyansa zosiyanasiyana monga madontho a inki, ndi zina zotero.

mankhwala a pepala (mongazamkatisizing agents,pamwamba sizing wothandiziraetc.):

1. Zamkati sizing wothandizila: sizing wothandizila anawonjezera pa zamkati, kuti atenge mbali ya sizing, zambiri rosin saponification chingamu, analimbitsa rosin chingamu, omwazika rosin chingamu (anionic omwazika rosin chingamu, cationic omwazika rosin chingamu), AKD ndi ASA ndi zina zotakataka zandale kusalowerera sizing agent ndi pesin petrol.
2. pamwamba saizi wothandizila: ntchito pamwamba saizi ya pepala kusintha mphamvu pamwamba pa pepala, kuchepetsa ufa, lint ndi zochitika zina, makamaka kusinthidwa wowuma, monga oxidized wowuma, wowuma acetate, crosslinked wowuma; kusinthidwa mapadi, monga carboxymethyl cellulose; ma polima opangidwa, monga polyvinyl mowa, polyacrylates, styrene maleic anhydride copolymers, emulsions sera ndi zina zotero; polima zachilengedwe, monga chitosan, gelatin ndi zina zotero.

mankhwala opangira mapepala (mongaantifoam wothandizira, zokutiraothandizira)

1. antifoam wothandizira: ntchito pulping, papermaking, ❖ kuyanika ndi njira zina defoaming, waukulu mitundu malasha manja kapena emulsified palafini, mafuta acid esters, otsika carbon alcohols, silicones, amides ndi zina zotero.
2. ❖ kuyanika zothandizira: mafuta, monga calcium stearate kubalalitsidwa; zotetezera, monga isothiazolinone, p-chloro-m-toluene; dispersing agents, monga sodium hexametaphosphate, sodium polyacrylate; zosintha mamasukidwe akayendedwe, monga CMC, alkali sungunuka kukweza sodium polyacrylate ndi zina zotero.

Cholinga chake ndi kupititsa patsogolo ubwino wa mapepala ndi kupanga bwino, kupititsa patsogolo ntchito, kuchepetsa ndalama zopangira zinthu, kuonjezera phindu lachuma ndikupanga mitundu yatsopano ya mapepala.

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