Kev siv cov fillers

Fillers muaj ntau yam kev siv thiab muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm cov ntaub ntawv sau. Cov ntaub ntawv sib xyaw ua ke ntawm cov fillers yog dav siv. Cov ntawv thov tseem ceeb yog raws li hauv qab no:
(1) Fillers rau roj hmab: Txawm tias cov roj hmab ntuj lossis cov roj hmab hluavtaws, cov khoom siv ntxiv rau cov khoom siv roj hmab feem ntau suav txog 10 ~ 50% ntawm lawv qhov hnyav tag nrho. Cov hom kev siv yuav luag txhua hom muab tub lim, thiab txoj kev tseem ceeb ntawm kev sib ntxiv yog sib xyaw. Cov khoom sib txawv thiab cov nyiaj ntxiv raug xaiv raws li qhov sib txawv ntawm cov khoom siv roj hmab xws li hnav, elongation, hardness, tensile zog, ruaj khov deformation, tsim kua muag lub zog, thiab elasticity los txhim kho lawv cov kev ua tau zoo thiab kev lag luam;
(2) Fillers rau plastics: Cov khoom ntim rau cov yas tuaj yeem muab faib ua ob pawg, ib qho yog incremental fillers thiab lwm yam yog cov khoom siv ntxiv. Cov qub tsuas yog txo cov nqi, tab sis qhov sib ntxiv ntawm cov fillers hloov qhov kub ntawm qhov ntom ntom, hardness, elastic modulus, thiab txhua yam khoom ntawm thermoplastics. Daim ntawv thov ntawm reinforcing fillers, ntxiv rau txo cov nqi, feem ntau txhim kho lub zog thiab elongation ntawm plastics thiab cuam tshuam lub zog. Yog li ntawd, qhov tsim nyog xaiv ntawm cov hom thiab cov nqi ntawm incremental fillers thiab reinforcing fillers thiab lawv qhov sib txuam tuaj yeem ua rau ob qho kev cuam tshuam;
(3) Fillers rau papermaking: Txhawm rau txhim kho daim ntawv zoo thiab txo cov nqi hauv kev lag luam papermaking, cov fillers uas tsis yooj yim hauv dej yuav tsum tau muab ntxiv rau hauv cov ntaub so ntswg txhawm rau txhim kho kev luam ntawv, yoog raws, lub zog, thiab lwm yam ntawm daim ntawv. Tus nqi ntxiv yog 1 ~ 40%. Lub ntsiab ntau yam yog calcium carbonate, thiab lwm yam .;
(4) Fillers rau coatings: Fillers ua lub luag haujlwm ntawm cov pob txha hauv cov txheej txheem, ua kom cov tuab ntawm txheej, txo tus nqi ntawm cov txheej txheej, thiab muab cov txheej txheem tshwj xeeb, xws li kev tiv thaiv corrosion, durability, thiab tsawg ntim expansion. Lub ntsiab ntau yam yog calcium carbonate, mica, silica, kaolin, thiab lwm yam.