Method for preparing dispersible ultra-fine silicon dioxide
A technology of ultra-fine silica and silica, which is applied in the treatment of dyed low-molecular organic compounds, dyed high-molecular organic compounds, dyed organic silicon compounds, etc., can solve serious dust pollution, unsatisfactory effect, high cost, etc. problem, to achieve the effect of uniform particle size distribution
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Embodiment 1
[0010] Embodiment 1: in the 5 liter container that is equipped with constant speed stirrer (for the general equipment in present laboratory, as Beijing Zhongxi Yuanda Technology Co., Ltd., adjustable rotating speed: 50-1300 rev / min, hereinafter the same), add containing The filter cake of 200g silicon dioxide (Fujian Shaxian Jinsha White Carbon Black Manufacturing Co., Ltd., silicon dioxide content 25%, water content 75%, hereinafter the same) adds 5g borate coupling agent (methyl ethylene stearyl alcohol base Borate-stearic acid triethanolamine complex, Fuzhou Cangshan District Hongbo Auxiliary Factory, the same below), stirred at a constant speed at 70°C for 20 minutes, then moved into a blast drying oven to dry at 100°C, and waited After drying, it was activated at 150°C for 1 hour to obtain the product.
Embodiment 2
[0011] Example 2: In a 5-liter container equipped with a constant-speed stirrer, add a filter cake containing 200g of silicon dioxide, stir at a constant speed until the filter cake becomes a slurry, add 10g of borate coupling agent, and keep at a constant speed at 70°C Stir for 20 minutes, then move into a blast drying oven to dry at 100°C, and activate at 150°C for 1 hour after drying to obtain the product.
Embodiment 3
[0012] Example 3: In a 5-liter container equipped with a constant-speed stirrer, add a filter cake containing 200g of silicon dioxide, stir at a constant speed until the filter cake becomes a slurry, add 20g of borate coupling agent, and keep at a constant speed at 70°C Stir for 20 minutes, then move into a blast drying oven to dry at 100°C, and activate at 150°C for 1 hour after drying to obtain the product.
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