Bentonite, tseem hu ua bentonite av nplaum lossis montmorillonite av nplaum, yog cov av nplaum uas tshwm sim hauv ntuj tsim los ntawm montmorillonite. Nws paub zoo txog nws qhov kev nqus dej zoo heev, cov khoom o, thiab lub peev xwm pauv cationic. Lub npe "Bentonite" yog los ntawm thaj chaw Benton ntawm Wyoming, Tebchaws Meskas, qhov chaw uas cov av nplaum tshwj xeeb no tau pom thawj zaug thiab muab lub npe rau nws qhov chaw tshawb pom.

Bentonite yog tus cwj pwm los ntawm nws lub peev xwm los tsim cov gels thaum hydrated, uas ua rau nws muaj txiaj ntsig zoo hauv ntau yam lag luam. Nws cov khoom siv lub cev thiab tshuaj lom neeg ua rau nws siv tau ua ib qho tseem ceeb hauv kev khawb av nkos, txhim kho lawv cov viscosity, suspension, thiab lubricity. Hauv kev lag luam ntawv, bentonite ua haujlwm ua tus neeg sawv cev filler thiab txheej, txhim kho daim ntawv dawb, du, thiab luam tawm tau. Tsis tas li ntawd, nws pom cov ntawv thov hauv metallurgy, ceramics, tshuaj pleev ib ce, thiab ntau ntxiv, qhov twg nws yuav xav tau hauv ntau hom thiab nrog cov kev cai ua tau zoo tshwj xeeb.

Cov xim ntawm bentonite tuaj yeem sib txawv ntawm dawb thiab daj ntseg mus rau ntau yam xim xws li grey, ntsuab, liab dawb, xim av, thiab liab, nyob ntawm nws cov hlau muaj pes tsawg leeg. Nws feem ntau ua rau pom cov luster zoo li waxy, earthy, lossis greasy thiab tuaj yeem pom hauv ob qho tib si xoob thiab compact. Lub peev xwm adsorption ntawm bentonite yog cuam tshuam los ntawm nws qhov loj me, nrog cov khoom me me qhia tau tias muaj zog adsorption.