Cov ntawv sau siv feem ntau ntawm cov xim muaj xws li calcium carbonate (hnyav calcium, lub teeb calcium), barite hmoov (barium sulfate), talc, kaolin (plooj av), porous hmoov quartz (silica), dawb carbon dub, precipitated barium sulfate, Mica hmoov, wollastonite, bentonite, thiab lwm yam.
Calcium carbonate
Calcium carbonate yog qhov muab tub lim (ntxiv rau xim) rau xim
Kev faib tawm ntawm cov calcium carbonate rau txheej txheej
Qhia tawm los ntawm cov yam ntxwv Raws li cov yam ntxwv, calcium carbonate rau txheej pleev xim feem ntau yog muab faib ua cov calcium calcium carbonate thiab hnyav calcium carbonate. Lub teeb calcium carbonate thiab hnyav calcium carbonate. Lub teeb calcium carbonate (precipitated calcium carbonate) tau muab faib ua dog dig precipitated calcium carbonate, nplua nplua calcium carbonate, ultrafine calcium carbonate, thiab ua kom muaj calcium calcium carbonate; hnyav calcium carbonate (cov khoom ntuj tsim) tau muab faib ua cov calcium calcium carbonate, cov nplua calcium calcium carbonate, thiab hnyav calcium calcium carbonate Cov calcium calcium carbonate.
Cais los ntawm daim ntawv siv lead ua. Cov dej tsis qab ntsev calcium carbonate pauv cov txheej txheem thiab tswj cov kua iav kom tau txais cov qhov cub muaju, rab koob muaju, cov nplai siv lead ua, cov khoom siv ua khoom siv thiab lwm cov khoom siv ua kom muaj calcium calcium carbonate.
Qeb los ntawm cov siv lead ua muaj qhov loj me Precipitated calcium carbonate yuav muab faib ua: cov calcium calcium carbonate (nruab nrab cov hmoov me me 44 ～ 60um); nruab nrab calcium carbonate (nruab nrab particle loj 15 ～ 44um); nplua calcium calcium carbonate (qhov nruab nrab ntawm cov khoom me me 1 ～ 15um); Superfine calcium carbonate (0.1 ～ 1um); Superfine calcium carbonate (GG lt; 0.1um).
Cov khoom siv calcium calciumate ntau tau muab faib ua cov hmoov ya ib zaug (200 lub hli zoo), ob chav yoov hmoov (325 mesh fineness) thiab plaub ya hmoov (400 mesh fineness) raws li cov hmoov zoo. Calcium carbonate (1250 mesh fineness).
Daim ntawv thov ntawm calcium carbonate hauv txheej txheej txheej
Calcium carbonate yog ib qho tseem ceeb muab xyaw xim. Cov calcium carbonate ua lub luag haujlwm ntawm txhawm rau txhawm rau txhawm thiab teeb meem (steel phaj, ntoo) hauv cov xim pleev xim zaj duab xis, thiab ua kom zoo dua qhov kev tso thiab permeability ntawm cov xim pleev xim zaj duab xis. Tshwj xeeb tshaj yog siv hauv cov hlau los tiv thaiv xeb primer, nws tsim cov ntawv cog lus hydrogen nrog cov nplaim hlau kom cov nplaum ntawm cov xim zaj duab xis, thiab tuaj yeem nqus hydrogen ions los tiv thaiv kev xeb ntawm cov hlau los tsim micro roj teeb. Tsis tas li ntawd, calcium carbonate muaj zoo weatherability, muaj abrasion tsis kam, cov ntsiab lus electrolyte tsawg, pH stabilization effect, thiab tuaj yeem txhim kho corrosion tsis kam thiab xim rheology. Cov pa roj carbon calcium carbonate tsuas yog tso rau cov putty, sau cov lus sib txuas, cov hlau ntxig thiab lwm yam khoom, uas yuav tsum muaj cov xim muaj cov xim loj, npliag npliag thiab qhov chaw ntxhib; nruab nrab calcium carbonate yog siv nyob hauv txheej txheej txheej txheej sab hauv tsev thiab txheej sab hauv tsev lossis cov khoom lag luam tiav. Ntawm lub teeb xim; kev nplua nplua nplua calcium calcium yog tsuas yog precipitated calcium carbonate, uas yog siv hauv kev luam ntawv inks.
Hnyav calcium tuaj yeem siv hauv kev kho mob sab hauv thiab sab nraud, thiab nws tsim nyog siv hauv kev pleev xim dej. Vim nws cov kua qaub tiv tsis zoo, nws hinders nws daim ntawv thov hauv cov xim sab nraud. Hauv cov tshuaj pleev ib ce, cov tshuaj hnyav ntawm cov calcium ntxiv yog 10% mus rau 35%, thiab cov ntsiab lus hauv ntau cov tshuaj pleev xim muaj ntau txog li 50%.
Hauv cov txheej txheem kev lag luam, cov calcium hnyav yog siv ntxiv rau qhov nce ntxiv, thiab feem ntau yog siv los hloov qee cov titanium dioxide (feem ntau 10% txog 20%, 30% hauv qhov loj) thiab xim xim, hloov lub teeb calcium thiab precipitated barium sulfate, thiab tiv thaiv xeb thiab ib nrab hloov los tiv thaiv xeb pigments.
Thaum hnyav calcium siv rau hauv cov xim tha xim sab hauv sab hauv, nws tuaj yeem siv ib leeg los yog ua ke nrog nrog talc. Piv nrog talcum hmoov, calcium carbonate tuaj yeem txo tus nqi pulverization, txhim kho cov xim khaws cia ntawm cov xim pleev xim rau cov xim dawb thiab nce cov khoom ua kom zoo nkauj.
Piv nrog rau cov calcium hnyav, lub teeb calcium muaj ib qho me me qhov me thiab qhov loj me me qhov me me tuaj yeem faib tawm, cov roj nqus tau siab thiab ci ci. Lub teeb calcium tuaj yeem siv qhov chaw uas muaj cov nyhuv loj xav tau. Nws yog ntau dua los sib xyaw lub teeb calcium thiab hnyav calcium hauv cov xim zoo ib nrab, matt xim thiab matt xim pleev xim.