Qhov sib txawv tseem ceeb ntawm calcium sulfate thiab plaster ntawm Paris yog calcium sulfate yog ib qho inorganic compound uas muaj calcium cation thiab sulfate anion, whereas plaster ntawm Paris yog cov khoom uas muaj calcium sulfate hemihydrates.
Lub sij hawm calcium sulfate yog muaj nyob rau hauv chemistry laboratories, thaum lub sij hawm plaster ntawm Paris yog muaj nyob rau hauv kev kho mob chaw kuaj mob thiab artistry. Nws yog vim lub plaster ntawm Paris yog ib yam khoom uas yuav siv tau rau molding.
Calcium Sulfate yog dab tsi?
Calcium sulfate yog ib qho inorganic compound uas muaj cov tshuaj formula CaSO 4Nws tshwm sim nyob rau hauv nws cov ntaub ntawv hydrated. Tsis tas li ntawd, cov molar loj ntawm anhydrous calcium sulfate yog 136.14 g / mol. Nws zoo nkaus li cov khoom dawb hauv chav sov. Tsis tas li ntawd, cov khoom dawb no tsis muaj ntxhiab tsw.
Daim duab 01: Cov qauv tshuaj ntawm Calcium Sulfate Ionic Compound
Lub hauv paus tseem ceeb ntawm calcium sulfate yog gypsum, ib qho ntxhia tshwm sim. Lwm qhov chaw tseem ceeb yog anhydrite. Ob qhov deposits tshwm sim li evaporates. Tsis tas li ntawd, peb tuaj yeem tau txais cov pob zeb hauv av los ntawm ob txoj hauv kev: los ntawm kev qhib-cam khwb cia lossis los ntawm kev sib sib zog nqus mining. Ntxiv rau qhov ntawd, peb tuaj yeem tau txais calcium sulfate los ntawm ntau cov txheej txheem sib txawv, xws li flue-gas desulfurization, tsim cov phosphoric acid los ntawm phosphate pob zeb, tsim cov hydrogen fluoride, thiab lwm yam. Tsis tas li ntawd, thaum calcium sulfate tsim tawm, peb tuaj yeem ua tau. saib nws nyob rau hauv peb theem sib txawv: daim ntawv anhydrous, daim ntawv dihydrated, thiab daim ntawv hemihydrate.
Ntxiv mus, muaj ntau yam kev siv calcium sulfate. Nws yog ib qho tseem ceeb hauv kev tsim cov plaster ntawm Paris, tsim cov stucco, hauv kev lag luam khoom noj ua coagulants, thiab lwm yam. Nws kuj yog siv los ua tus neeg sawv cev firming, tus neeg sawv cev leavening, thiab ua cov desiccant hauv ntau daim ntawv thov.
Plaster of Paris yog dab tsi?
Peb tuaj yeem tsim plaster ntawm Paris los ntawm gypsum. Tib neeg tau siv cov khoom no los ntawm lub sijhawm qub. Cov neeg nyob hauv thaj chaw ze Paris siv cov khoom siv no dav, los ua plaster thiab cement. Lawv kuj tau siv nws los ua haujlwm ornamental ntawm qab nthab thiab cornices. Yog li, qhov no yog li cas lub npe plaster ntawm Paris tau los ua. Plaster ntawm Paris muaj cov calcium sulfate hemihydrates (CaSO4·0.5H2O).
Daim duab 02: Calcium Sulfate Hemihydrate / Plaster of Paris
Ntxiv mus, peb tuaj yeem npaj cov khoom sib xyaw no los ntawm cua sov gypsum, uas muaj calcium sulfate dihydrate (CaSO4·2H2O), mus rau qhov kub ntawm li 150 ° C (120-180 ° C). Saum toj no, peb yuav tsum tau ntxiv qee yam additives thaum cua sov.
Tsis tas li ntawd, Plaster ntawm Paris yog hmoov zoo, dawb. Thaum nws dhau los ua dej, peb tuaj yeem siv nws los pwm cov khoom, thiab yog tias peb tso nws kom qhuav, nws ua kom tawv thiab khaws txhua yam zoo li tau teeb tsa ua ntej ziab.
Qhov txawv ntawm Calcium Sulfate thiab Plaster ntawm Paris yog dab tsi?
Calcium sulfate yog ib qho inorganic compound uas muaj cov tshuaj CaSO 4, tab sis plaster ntawm Paris muaj calcium sulfate. Qhov sib txawv tseem ceeb ntawm calcium sulfate thiab plaster ntawm Paris yog calcium sulfate yog ib qho inorganic compound uas muaj calcium cation thiab sulfate anion, whereas plaster ntawm Paris yog cov khoom uas muaj calcium sulfate hemihydrates.
Hauv qab infographic muab cov lus piav qhia ntxaws txog qhov sib txawv ntawm calcium sulfate thiab plaster ntawm Paris.
Summary – Calcium Sulfate vs Plaster of Paris
Plaster ntawm Paris muaj calcium sulfate. Qhov sib txawv tseem ceeb ntawm calcium sulfate thiab plaster ntawm Paris yog tias calcium sulfate yog ib qho inorganic compound uas muaj calcium cation thiab sulfate anion, hos plaster ntawm Paris yog cov khoom muaj calcium sulfate hemihydrates.
