Cov ncauj lus kom ntxaws qhia txog Barium Sulfate

1. Tshuaj npe thiab cov qauv
"Barium Sulphate" yog lus Askiv lub npe rau qhov sib xyaw no. Nws cov tshuaj formula yog BaSO₄. Barium yog ib hom hlau thiab sulphate yog polyatomic anion. Hauv lub npe, "barium" qhia tias muaj barium ions (Ba²⁺), thiab "sulphate" yog hais txog cov sulfate ions (SO₄²⁻).
2. Lub cev muaj zog
Cov tsos mob: Barium sulphate yog dawb crystalline khoom. Nws feem ntau tshwm raws li cov hmoov zoo los yog nyob rau hauv daim ntawv ntawm crystals. Piv txwv li, hauv kev tsim cov xim, nws cov xim dawb yog siv los muab lub zog npog zoo thiab ci ntsa iab.
Solubility: Nws yog insoluble hauv dej. Cov cuab yeej no tseem ceeb heev. Cov khoom solubility tas li (Ksp) ntawm barium sulphate yog qhov tsawg heev, uas txhais tau hais tias tsuas yog ib qho me me ntawm barium sulphate tuaj yeem yaj hauv dej. Nws kuj yog insoluble nyob rau hauv feem ntau cov organic solvents xws li ethanol. Txawm li cas los xij, nws tuaj yeem yaj hauv cov concentrated sulfuric acid nyob rau hauv qee yam mob vim yog kev tsim cov complex.
Qhov ntom ntom: Nws muaj qhov ntom ntom ntom. Qhov ceev ntawm barium sulphate yog li 4.5 g / cm³. Qhov no ua rau nws cov khoom hnyav thiab yog ib qho ntawm cov laj thawj uas nws tau siv los ua tus neeg sawv cev hnyav hauv qee qhov kev siv.
3. Cov Khoom Siv Tshuaj
Stability: Barium sulphate yog ib qho tshuaj ruaj khov. Nws tsis hnov ​​​​mob yooj yim nrog cov kua qaub (tshwj tsis yog cov concentrated sulfuric acid raws li tau hais ua ntej) lossis cov hauv paus hauv cov xwm txheej ib txwm muaj. Qhov kev ruaj ntseg no yog qhov tseem ceeb hauv nws cov kev siv. Piv txwv li, hauv kev kho mob, thaum nws siv los ua tus neeg sawv cev sib txawv rau kev kuaj X-ray ntawm lub plab zom mov, nws ruaj khov ua kom tsis txhob muaj cov kua qaub thiab cov enzymes hauv plab thiab cov hnyuv.
Inertness: Nws yog ib qho inert thiab tsis koom nrog ntau yam tshuaj lom neeg. Cov cuab yeej inert no ua rau nws tsim nyog rau kev siv nyob rau hauv ib puag ncig uas yuav tsum tau muaj tshuaj stability, xws li nyob rau hauv cov formulation ntawm tej plastics thiab coatings los tiv thaiv cov tshuaj degradation.
4. Siv
Kev Siv Tshuaj Kho Mob: Hauv cov tshuaj, barium sulphate yog dav siv los ua tus neeg sawv cev sib txawv rau X-ray thiab CT scans ntawm plab hnyuv. Kev ncua ntawm barium sulphate yog noj los ntawm cov neeg mob. Raws li X-rays dhau los ntawm lub cev, barium sulphate - cov cheeb tsam uas muaj nyob hauv (xws li txoj hlab pas, lub plab, thiab cov hnyuv) tshwm sim kom pom tseeb ntawm X-ray duab vim hais tias barium sulphate muaj qhov ntom ntom thiab nqus X-rays ntau dua li cov duab X-rays. cov ntaub so ntswg nyob ib puag ncig. Qhov no pab cov kws kho mob txhawm rau txheeb xyuas cov txheej txheem txawv txav, rwj, qog, thiab lwm yam mob hauv lub plab zom mov.
Cov ntawv thov kev lag luam:
Xim thiab Txheej: Nws yog siv los ua cov khoom siv hauv cov xim thiab coatings. Qhov sib ntxiv ntawm barium sulphate tuaj yeem txhim kho qhov opacity, hardness, thiab abrasion tsis kam ntawm cov xim zaj duab xis. Nws kuj tseem pab txo tus nqi ntawm cov xim pleev xim vim nws yog cov khoom siv pheej yig dua piv rau lwm cov tshuaj ntxiv.
Plastics thiab Roj Hmab: Hauv kev lag luam yas thiab roj hmab, barium sulphate yog ntxiv los txhim kho cov khoom siv xws li tensile zog thiab hardness. Nws kuj tseem ua haujlwm raws li kev muab tub lim kom txo cov nqi ntawm cov khoom siv polymer kim dua uas xav tau, yog li txiav cov nqi. Nyob rau tib lub sijhawm, nws cov xim dawb tuaj yeem pab ua kom tawv nqaij ntawm cov khoom kawg.
Kev Lag Luam Ntawv: Barium sulphate yog siv rau hauv daim ntawv - ua cov txheej txheem. Nws tuaj yeem muab ntxiv rau hauv daim ntawv pulp ua cov muab tub lim kom cov ntawv hnyav thiab opacity. Nws kuj tseem txhim kho qhov luam ntawv ntawm daim ntawv los ntawm kev muab lub ntsej muag smoother rau tus cwj mem kom ua raws li.