公开(公告)号：US3917767A

公开(公告)日：1975-11-04

申请号：US51540274

申请日：1974-10-16

Applicant: DYNAMIT NOBEL AG

Inventor： EICH JOHANNES ,  BRACHERT HEINRICH

IPC: C06B21/00

CPC classification number: C06B21/0008

Abstract: A process for the preparation of spherical, multiple-base propellant powder for firearms having a low permissible maximum pressure which powder has a base of nitric acid esters of cellulose includes the steps of utilizing a mixture of nitrocellulose and at least one nitrate selected from the group consisting of glycerin trinitrate and glycol dinitrate as propellant raw material; agitating said raw material and stabilizers for the material dissolved in a water-immiscible first solvent under water to effect formation of a lacquer containing said raw material and the stabilizers in the solvent within an aqueous system; segregating the thus-produced lacquer into a plurality of particles by the addition of a protective colloid and alkaline salts; allowing the lacquer particles to flow together again by subsequently changing the agitating speed of the aqueous system and thereupon adding once more protective colloid and salt and again segregating the lacquer to form spherical particles of propellant powder by adjusting the agitating speed of the aqueous system to approximately the value at which the first segregation of the lacquer has taken place; and, after the second segregating step is finished, removing more than one-half of the solvent from the aqueous system by distillation; adding burn controll moderators dissolved in a second water immiscible solvent to the aqueous system; and subsequently, removing the remaining portion of water-immiscible solvents from the aqueous system. The moderators are coated on the spherical particles of the propellent powder.

Abstract translation: 制备具有低容许最大压力的枪支的球形多基础推进剂粉末的方法，该粉末具有纤维素的硝酸酯基的步骤包括以下步骤：利用硝酸纤维素和至少一种硝酸纤维素的混合物 由三硝酸甘油和二硝酸二乙酯为推进剂原料组成; 搅拌所述原料和用于在水中与水不混溶的第一溶剂中溶解的材料的稳定剂，以在含水体系内在溶剂中形成含有所述原料和稳定剂的漆; 通过添加保护胶体和碱性盐将如此生产的漆分离成多个颗粒; 通过随后改变水性体系的搅拌速度，使漆颗粒再次流动，随后再加入保护胶体和盐，并再次将漆分离，形成推进剂粉末的球形颗粒，通过将水系统的搅拌速度调节到大约 漆的第一次分离发生的价值; 并且在第二分离步骤完成后，通过蒸馏从水系中除去一半以上的溶剂; 将溶解在第二水不混溶溶剂中的燃烧控制调节剂加入到水系统中; 然后从水系统中除去剩余部分的与水不混溶的溶剂。 调节剂涂覆在推进剂粉末的球形颗粒上。