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Method for preparing stars through gel in-situ molding

A gelatinogen and bright bead technology, applied in offensive equipment, weapon types, pyrotechnics, etc., can solve the problems of large gaps, no consideration of the effect of molding materials, etc., and achieve the effect of high density, rich variety and function, and improved safety.

Active Publication Date: 2019-03-19
DANCING FIREWORKS GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liu Zhongyu et al. ("Chemical Times", Vol. 32, No. 6) used this technology to prepare a gel explosive by pouring acrylamide between energetic solid particles, but the energetic solid particles used were formed gunpowder. It is not the original black powder powder. The gap between the energetic solid particles is relatively large, so it can be poured, and its purpose is to bond the energetic solid particles in the cartridge, not for forming. Therefore, It does not take into account the effect of the molded substance after bonding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) The configuration of the premix: use distilled water as the solvent, add acrylamide (AM), N,N-methylene acrylamide (MBAM), ammonium persulfate (APS), tetramethylethylenediamine (TEMED) in sequence , stir evenly to obtain a premixed solution;

[0021] (2) Mixing of the premix and the dry powder: put the black powder dry powder in the sesame cake, add a certain amount of the premix, and mix for 45 seconds under the condition of antistatic slow stirring to obtain the infiltrated mixture;

[0022] (3) In-situ molding: quickly fill the soaked mixture into the mold, cure at room temperature, demould after curing, and dry at 40°C for 48 hours to obtain bright beads;

[0023] Among them, the mass ratio of AM, MBAM, APS, TEMED to black powder dry powder is 5:0.3:0.6:0.6:100, and the ratio of distilled water to black powder dry powder is 64mL:100g.

Embodiment 2

[0025] Same as Example 1, but the ratio of distilled water to black powder dry powder is 52mL: 100g.

Embodiment 3

[0027] Same as Example 1, but the mass ratio of AM, MBAM, APS, TEMED and black powder dry powder is 5:0.3:0.1:0.6:100.

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PUM

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Abstract

The invention discloses a method for preparing stars through gel in-situ molding. The method comprises the following steps that distilled water is taken as a solvent, acrylamide, N,N-methacrylamide, ammonium persulfate and tetramethylethylenediamine are sequentially added, and the mixture is uniformly stirred to obtain a premixed solution; black powder dry powder is placed in a beaker, a certain amount of the premixed solution is added, and then the mixture is mixed under an anti-static low-speed stirring condition to obtain an infiltrated mixture; and the infiltrated mixture rapidly fills a mold and is cured at room temperature, after curing, demoulding and drying are performed to obtain the stars, and the raw material formula is further optimized. According to the preparation method, thestars of different shapes can be prepared according to requirements, moreover, the curing time is short, moreover, the relatively large pressure is not needed, the preparation is safe, and the prepared stars have the advantages of being high in density and high in strength.

Description

technical field [0001] The present application relates to a preparation method of bright beads for fireworks and firecrackers, in particular to a method for preparing bright beads by gel in-situ molding. Background technique [0002] Bright beads are used in the field of fireworks and firecrackers to achieve a specific discharge effect, which is prepared by granulating black powder powder into spherical beads with a binder. For safety reasons, bright beads are usually rotated on a rotating disc through black powder dry powder, and the dry powder is made to have a certain viscosity by adding a binder liquid, and the roll becomes larger and larger during the rotation of the disc, and qualified particles are obtained by setting a particle size screening device. Bright beads. However, this method can only prepare round bright beads, and the preparation time is long, and there are still potential safety hazards due to the friction between the dry powders. In order to obtain b...

Claims

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Application Information

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IPC IPC(8): F42B4/30
CPCF42B4/30
Inventor 蔡波杨传观刘武
Owner DANCING FIREWORKS GROUP CO LTD