METHOD FOR FABRICATION OF AMMONIA PERCHLORATE CONTAINING HYDROPHOBISATED FRACTION Russian patent published in 2009 - IPC C06B21/00 C06B29/22 

FIELD: chemistry.

SUBSTANCE: invention refers to the fabrication of ammonia perchlorate for composite solid propellant. The fabrication method of ammonia perchlorate containing the hydrophobisated fraction includes the preparation of the hydrophobizated fraction with specific surface area from 5400 to 7300 cm²/g having alkylsiloxane coating with mass content from 0.11 to 0.25 wt %, addition of the said hydrophobizated fraction to ammonia perchlorate in the amount of 1.5 to 77 wt % and mixing in the drum mixer having cylinders with height and diametre 30-40 mm made from elastic polyurethane. The hydrophobizated fraction of ammonia perchlorate is fabricated and packed to the bags with calculating of the arithmetic mean of the alkylsiloxane content in the fabricated bags round to the nearest hundredths. The hydrophobizated fraction used for addition to ammonia perchlorate has alkylsiloxane content departure from arithmetic mean value no more than ±0.01 wt %.

EFFECT: claimed method enhances the burning rate uniformity of the composite solid propellant containing ammonia perchlorate with the hydrophobizated fraction.

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