| 摘要 |
PURPOSE: Provided is a preparation method of a nonpoisonous portable gas mask which is used continuously for 120 minutes and has a light weight of minimum 300 gram. CONSTITUTION: The preparation method on nonpoisonous portable gas mask comprises the steps of: crushing 15% of silica gel and 10% of germanium, firing for 7 to 10 hours and pulverizing to 450 to 500 meshes to obtain a preparation A; micro-kneading 8% of active carbon and 11% of loess, firing for 5 to 7 hours and pulverizing to 350 to 400 meshes to obtain a preparation B; diluting 5% of magnesium chloride and 3% of bicarbonate with 48% of water to obtain a preparation C; mixing the preparation A, B and C and cooling; and forming the mask finely with the preparation.
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