Lub ntsiab sib txawv ntawmprecipitated silicathiab fumed silica

Qhov sib txawv tseem ceeb ntawm precipitated silica thiab fumed silica (tseem hu ua silica fume) tuaj yeem boiled mus rau ob yam. Ua ntej, qhov loj me me ntawm precipitated silica feem ntau yog nyob rau hauv micrometer ntau, thaum lub fumed silica feem ntau nyob rau hauv nanometer ntau yam. Qhov thib ob, cov ntsiab lus impurity ntawm precipitated silica yog siab dua, nrog ib tug purity theem ntawm ib ncig ntawm 93 feem pua, whereas cov impurity cov ntsiab lus ntawm fumed silica yog tsawg heev, nrog ib tug purity theem ntawm ntau tshaj 99 feem pua.

Ob hom silica tuaj yeem siv los ua kom tuab, muab cov viscosity, tiv thaiv kev teeb tsa, thiab txhawb cov khoom siv ntxiv. Txawm li cas los xij, vim muaj qhov sib txawv loj ntawm qhov loj me thiab purity, fumed silica yog superior rau precipitated silica nyob rau hauv no hwm.

Txawm hais tias qhov sib txawv no, ob qho tib si ntawm silica muaj lawv cov kev siv hauv ntau daim ntawv thov. Precipitated silica yog dav siv nyob rau hauv zus tau tej cov roj hmab, yas, thiab coatings, thaum fumed silica feem ntau siv nyob rau hauv zus tau tej cov adhesives, sealants, thiab inks.

Nws yog tsim nyog sau cia tias ob qho tib si precipitated thiab fumed silica ua lub luag haujlwm tseem ceeb hauv ntau qhov kev lag luam thiab tseem ceeb rau kev tsim cov khoom tshiab thiab cov khoom. Lawv ob leeg muaj nuj nqis heev rau lawv cov khoom tshwj xeeb thiab tseem yuav ua cov ntaub ntawv tseem ceeb rau xyoo tom ntej.

Hauv kev xaus, thaum muaj qee qhov sib txawv ntawm precipitated silica thiab fumed silica, ob hom silica muaj kev siv tseem ceeb thiab muaj txiaj ntsig zoo hauv ntau yam lag luam. Nws yog ib qho tseem ceeb kom txaus siab rau cov khoom tshwj xeeb ntawm ob qho tib si thiab lawv lub peev xwm los txhim kho thiab txhim kho cov ntaub ntawv uas peb siv txhua hnub.

Tiv tauj peb