Dej-raws li cov nplaum, raws li lub npe qhia, yog cov nplaum uas siv dej ua qhov nruab nrab dispersion.
Piv nrog rau cov kuab tshuaj ib txwm muaj-raws li cov nplaum nplaum, dej-raws li cov nplaum nplaum muaj cov txiaj ntsig zoo xws li kev ua phooj ywg ib puag ncig, tsis yog- tshuaj lom, tsis muaj ntxhiab, tsis yog-flammable, thiab tsis yog- tawg, yog li nrhiav tau dav siv nyob rau hauv niaj hnub kev lag luam ntau lawm thiab lub neej txhua hnub.
Dej-raws li cov nplaum nplaum yog cov tshuab ruaj khov uas tsim los ntawm dispersing hluavtaws resins lossis natural polymers hauv dej los ntawm txoj kev xws li emulsion polymerization lossis suspension polymerization. Cov nplaum nplaum nyob rau hauv qhov system dispersion no nqa hluav taws xob, tswj kev ruaj ntseg los ntawm kev sib cuam tshuam ntawm cov nqi no, thaum tib lub sijhawm muab cov khoom nplaum zoo rau cov nplaum. Lub zog ntawm cov dej-raws li cov nplaum feem ntau yog nyob ntawm qhov loj thiab kev faib tawm ntawm cov nplaum nplaum, nrog rau kev sib cuam tshuam ntawm cov khoom thiab cov adherends.
