Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Firework with integral module explosive filling structure in open mode and preparation method thereof

A technology for shells and buds, which is applied to the field of shells with an integral modular budding structure and their preparation, can solve the problems of unsatisfactory bud effect, unsatisfactory ignition performance, hidden dangers in the safety of shells, and the like. Improve budding effect, improve ornamental effect and environmental performance, good quality stability and consistency

Active Publication Date: 2013-03-13
NANJING UNIV OF SCI & TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of budding medicine has been used for hundreds of years. It is characterized by a wide range of raw materials and relatively easy production, but it also brings about the problem of unstable material properties.
In addition, during the bud opening process of the firework bomb, the filling materials such as black powder and rice husk will generate a lot of smoke, which will affect the viewing effect.
[0003] Directly using smokeless fireworks with a porous or microporous structure as the bud opening drug, the bud opening effect is not ideal, the main problem is that its ignition performance is not ideal, and the firing rate of bright beads is low when the charging conditions are not suitable
In the preparation process of granular microporous smokeless fireworks, the ignition performance can be significantly improved by adding sensitizers, but the above problems cannot be completely solved
In addition, when directly using granular porous or microporous smokeless fireworks as the budding drug for making fireworks shells, each shot needs to be weighed in advance, and the particles are prone to static electricity and adhere to the shells of the fireworks. The powder has brought some difficulties, and these problems have brought safety hazards in the production process of the fireworks shell powder
In addition, when the charging conditions of granular fireworks are not suitable, there will be a problem of drug particles remaining in the bud opening process, which is unfavorable to the safety and environmental protection of the discharge process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Firework with integral module explosive filling structure in open mode and preparation method thereof
  • Firework with integral module explosive filling structure in open mode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] combine figure 1 , select the 3-inch fireworks bomb as an example, the outer spherical shell diameter is 76mm, and the thickness is 3mm.

[0061] Granular microporous fireworks medicine is prepared by using single-base waste powder containing 97.0% nitrocellulose and 1.0% diphenylamine (stabilizer). The raw material is preliminarily crushed to control the particle diameter to no more than 3mm, and the wet powder with water is added to the molding equipment. In the state of stirring, add ethyl acetate solvent 10 times the mass of the pellets, stir and dissolve at 45°C-50°C for 30-60min, and then continuously add 0.5% aqueous solution of potassium nitrate to the system; Carry out emulsification and foaming operation. In this step, continue to add 0.5% potassium nitrate aqueous solution. The amount of potassium nitrate aqueous solution added is 6 times the mass of the medicine grains, and then continue to stir at a temperature of 50-60°C for 30min-60min. When the temperat...

Embodiment 2

[0068] combine figure 1 , using the same charge structure as in Example 1, the preparation process of the granular micropore fireworks drug is the same as in Example 1, and the preparation process of the budding drug premix for the integral module charge is also the same as in Example 1, except that The drying step of the two hemispheres is omitted in the process of popping and charging the fireworks, and the complete spheres are prepared and then dried together, and the drying time is extended by 24 hours. The bud-opening test shows that the firing rate of Liangzhu is 100%, and the bud-opening diameter is about 50 meters.

Embodiment 3

[0070] combine figure 2 , using the same process and raw materials as in Example 1 to make the fireworks shell of the modular charge structure. The preparation process of the granular micro-pore fireworks medicine is the same as that of Example 1, and the preparation process of the bud-opening drug premix for integral module filling is also the same as that of Example 1, only the filling structure is changed, and the filling order is as follows: step a, the first A layer of bright beads is arranged on the inside of half of the shell of the shell, and then the first layer of budding medicine is filled into the inside of the first layer of bright beads, and the second layer of bright beads is filled into the inside of the first layer of budding medicine premix ; Fill the second layer of bud-opening drug premix block into the inner side of the second layer of bright beads, leaving some space in the center of the shell; use the same method as above to fill the other half of the s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a firework with an integral module explosive filing structure in an open mode and a preparation method thereof. The explosive filling structure disclosed by the invention comprises a shell, a delay fuse, bright beads and an open explosive module, wherein the shell, the delay fuse and the bright beads are made of traditional materials. The preparation method of the firework with the integral module explosive filling structure in an open mode comprises the following steps: preparing a slurry containing an organic adhesive, an ignition performance reinforcing agent and granular micro-pore firework explosive granules; then, filling the bright beads and the slurry into the ball shell of the firework according to the needed structure, thus forming an integral module structure; and finishing the preparation of the firework according to a conventional method. By adopting the integral module explosive filling structure and the explosive filling method, the gap between the open explosive module and the bright beads is basically eliminated; the ignition rate of the bright beads can be improved; the mechanical friction action among the granules in the explosive filling course and storage and transportation course of the granules is avoided; and the safety of the preparation course and storage and transportation course of fireworks is improved.

Description

technical field [0001] The invention belongs to the technology of opening buds of fireworks bombs, in particular to a fireworks bomb with an integral module bud opening charge structure and a preparation method thereof. Background technique [0002] The traditional fireworks popping explosives are made of black powder as the main explosive material. Usually, black powder is mixed with a small amount of binder, and a large amount of low-density filling materials such as rice husk or cottonseed husk are added. Stick the black gunpowder to the surface of the granular filler, and dry it to become a granular budding medicine. This bud-opening drug has been used for hundreds of years. It is characterized by a wide range of sources of raw materials and is relatively easy to make, but it also brings about the problem of unstable material properties. In addition, during the bud opening process of this kind of budding medicine, the filling materials such as black powder and rice husk...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F42B4/00F42B4/30
Inventor 潘仁明蔺向阳李生有周兆宏
Owner NANJING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products