Papermaking chemicals xa mus rau lub ntsiab lus dav dav rau ntau yam tshuaj siv tshuaj thiab cov koom haum siv hauv cov txheej txheem papermaking. Lawv lub hom phiaj yog txhawm rau txhim kho cov ntawv zoo thiab kev ua haujlwm ntau lawm, txhim kho kev ua haujlwm, txo cov nqi tsim khoom, nce nyiaj txiag txiaj ntsig, thiab tsim cov ntawv tshiab. Lawv yog cov khoom siv thev naus laus zis tseem ceeb rau kev lag luam papermaking.
Papermaking chemicals muaj ntau haiv neeg thiab tuaj yeem muab faib ua ob pawg loj raws li lawv lub hom phiaj thiab kev ua haujlwm: cov tshuaj ua haujlwm thiab cov txheej txheem tshuaj.
1. Cov khoom pab khaws cia thiab pom: cationic starch, polyacrylamide, polyethyleneimine, anionic starch, thiab multi-cov khoom siv khaws cia.
2. Defoamers: organosilicones, polyethers, los yog fatty alcohols.
3. Preservatives: triazine, isothiazolinones, organic bromine compounds, thiab lwm yam.
4. Flocculants: polyaluminum chloride, sodium polyacrylate, polyacrylamide, thiab lawv cov khoom hloov kho.
5. Cov tshuaj tiv thaiv sediment: cationic polyamides, thiab lwm yam.
6. Fiber dispersants: polyethylene oxide, siab molecular hnyav anionic polyacrylamide, thiab lwm yam.