1) khaub ncaws hmoov, tes ntxuav hmoov, muaj hmoov hmoov thiab lwm yam khoom, feem ntau cov hmoov raw khoom. Dej qab ntsev, sodium sulfate, sodium silicate thiab lwm yam khoom raw nws tus kheej qhuav, preservation puag yuav tsum tau tseem txias thiab qhuav, yog yooj yim rau damp. Xws li dej qab zib tshauv, alias: muaj sodium carbonate; lub luag haujlwm: kev ua npau suav phem; txoj kev qhia txog: dawb hmoov, txhaws hnov, yoojyim nqus tau cov dej noo, dej sov; nyob rau hauv qee qhov chaw yuav siv tau los ua kev ua si. Tam sim no, ntau ntawm cov khoom siv hmoov txhuam rau ntawm lub khw muag khoom yog sib tov khoom, yuav cov khoom tiav, thiab tom qab ntawd ob tov sib tov khoom. Qee tus lag luam siv lub tshuab ntxhua ntxhua khaub ncaws ntau txog 20 meters thiab siab tshaj 300 degree siab thiab sib piv cov nqi ntau tshaj li 800 txhiab, kom lawv muaj peev xwm ua kom pheej yig thiab tsis muaj cov hmoov zoo zoo hauv cov hmoov. Kev siv cov khaub ncaws hmoov qhuav tuaj yeem siv tau los ntawm kev siv ntau lub tshuab ntxhua khaub ncaws ntau dua li 20 metres thiab siab kub tshaj li ntawm 300 degrees, thiab nqis peev ntau tshaj li 800 txhiab, thiab tom qab ntawd peb tuaj yeem ua tus nqi pheej yig thiab qib siab zoo hmoov tshuaj hmoov.
2) ntxuav cov kua, xab npum , tsuaj zawv plaub hau, da dej gel, ntxuav tes ntxuav tes, thiab tag nrho cov khoom rau cov kua tshuaj, cov khoom siv (feem ntau ntawm cov hluav taws) 10-20% ntawm cov khoom, thiab feem ntau yog 80-90% dej. Kev lag luam ntawm ntau cov khoom siv lag luam nyob hauv kev lag luam yog relying rau lwm mechanical stirring yooj yooj yim molding khoom, yooj yim tov molding defects cov khoom tsuas ntim dispersed, raw cov ntaub ntawv tsis yog mus txog dispersion tag nrho thiab emulsification, cov khoom uas yooj yim los ua delamination, sedimentation, metamorphism thiab stank phenomenon.
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