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Wood pulp nitrocellulose single-base propellant and preparation method thereof

A nitrocellulose and single-base propellant technology is applied in the field of wood pulp nitrocellulose single-base propellant and its preparation, and achieves the effects of stable performance, less impurities and good quality consistency

Active Publication Date: 2014-08-27
LUZHOU NORTH CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Domestically, in the manufacturing process of single-base propellants, there is no report on the use of wood pulp nitrocellulose for the production of single-base propellants.

Method used

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  • Wood pulp nitrocellulose single-base propellant and preparation method thereof
  • Wood pulp nitrocellulose single-base propellant and preparation method thereof
  • Wood pulp nitrocellulose single-base propellant and preparation method thereof

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preparation example Construction

[0045] In addition to providing the above-mentioned wood pulp nitrocellulose single-base propellant, the present invention also provides a preparation method of the above-mentioned wood pulp nitrocellulose single-base propellant. It includes the following steps:

[0046] a. Water flooding: water-containing wood pulp nitrocellulose is flooded, and ethanol with a volume concentration of 72% to 100% is sprayed during the water flooding process to obtain wood pulp nitration with a water mass percentage of ≤4.0% and a certain amount of ethanol cellulose;

[0047] b. Plasticization: add 1% to 2% stabilizer and 50% to 110% solvent to the wood pulp nitrocellulose after water displacement in step a, based on the pure dry weight of wood pulp nitrocellulose, and then add 0% to 110% solvent 7% other additional ingredients, plasticized and mixed at -5°C to 35°C for 60min to 120min;

[0048] Wherein, the other additional ingredients described are one or more of potassium nitrate, potassiu...

Embodiment 1

[0061] The preparation of wood pulp nitrocellulose single-base propellant 2 / 1 camphor comprises the following steps:

[0062] (1) Water flooding: put the water-containing wood pulp nitrocellulose into the centrifugal water flooding machine, first gradually spray 35L of ethanol with a volume concentration of 72% to 76% in the centrifugal water flooding machine, uniformly flood the water for more than 3min, and then Gradually spray 48L to 53L of ethanol with a volume concentration of 95% to 100%, and drive water for more than 15 minutes to produce water-repelling wood pulp nitrocellulose with a water content of ≤4.0%;

[0063] (2) Plasticization: According to the existing 2 / 1 single-base propellant technology of Zhang product number, the wood pulp nitrocellulose after the water displacement in step a is added to the gelling machine, calculated according to the pure dry weight of wood pulp nitrocellulose , dissolve 1.5% stabilizer diphenylamine in ether, prepare the solution and ...

Embodiment 2

[0069] The preparation of wood pulp nitrocellulose single base propellant 4 / 7 stone comprises the following steps:

[0070] (1) Water flooding: put the water-containing wood pulp nitrocellulose into the centrifugal water flooding machine, first gradually spray 40L of ethanol with a volume concentration of 72% to 76% in the centrifugal water flooding machine, and evenly flood the water for 10 minutes, then Gradually spray 60L of ethanol with a volume concentration of 95% to 100%, and displace water for 20 minutes to obtain water-displacing wood pulp nitrocellulose with a water content of ≤4.0%.

[0071] (2) Plasticization: According to the existing 4 / 7 stone product number single-base propellant technology, take the water-displacing wood pulp nitrocellulose prepared in step (1) and add it to the gelling machine; Calculated, dissolve 1.6% diphenylamine in ether, prepare the solution and then add it to the plasticizing equipment, wherein the amount of ether added is 65% to 80%, p...

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Abstract

The invention relates to a wood pulp nitrocellulose single-base propellant and a preparation method thereof and belongs to the technical field of propellant preparation. The method for preparing the single-base propellant comprises the following steps: by taking wood pulp nitrocellulose as a main raw material of the single-base propellant, expelling water and plastifying, sequentially companding, cutting, screening, removing solvent, desensitizing the gloss and drying according to the conventional single-base propellant technical technology, and thus obtaining the single-base propellants of various different article numbers of which the internal trajectory performance meets the index requirement, such as 2 / 1 camphor tree and 4 / 7 stone. The wood pulp nitrocellulose single-base propellant comprises the following components in percentage by mass: 80-98 percent of wood pulp nitrocellulose, 1-2 percent of stabilizing agent, 1-5 percent of volatile component, 0-6 percent of desensitization agent and 0-7 percent of other supplementary elements. According to the preparation method, the problem that the raw material of the single-base propellant depends on linters nitrocellulose is solved, and the strategic supplies reserves are expanded.

Description

technical field [0001] The invention belongs to the technical field of propellant preparation, and in particular relates to a wood pulp nitrocellulose single-base propellant and a preparation method thereof. Background technique [0002] The content of nitrocellulose in the single-base propellant is about 94-96%, and it is the only energy component in the single-base propellant. In the field of single-base propellant manufacturing, domestically used linter cellulose is refined nitrocellulose as the only energetic material for the production of single-base propellants. However, the production of cotton linter cellulose is greatly affected by the production of cotton. When a large number of single-base propellants are required to be manufactured, there is a risk of insufficient supply of production capacity. [0003] In order to solve the risk of relying on cotton linter nitrocellulose as the only energetic raw material for the production of single-base propellant, the presen...

Claims

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Application Information

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IPC IPC(8): C06B25/18
Inventor 马基友江菊华刘德鸿戴秋洪
Owner LUZHOU NORTH CHEM IND
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