Composite ignition powder for seismic exploration electric detonator and preparation method of composite ignition powder

Abstract

The invention discloses composite ignition powder for a seismic exploration electric detonator and a preparation method of the composite ignition powder, and the composite ignition powder is used for solving the problems that great difficulties are caused in powder preparation and security management in the later production process and the electrostatic sensitivity index is not easy to achieve when lead styphnate acid ignition powder which is relatively high in mechanical sensitivity and electrostatic spark sensitivity is mainly adopted as the ignition powder for manufacturing a seismic exploration electric detonator. Four components, namely, potassium picrate, potassium perchlorate, minium and lead thiocyanate, are adopted as raw materials for preparing the ignition powder. The composite ignition powder disclosed by the invention is short in action time, good in ignition synchronism, relatively low in mechanical sensitivity and electrostatic spark sensitivity, can be used for remarkably improving the security in producing and using the seismic exploration electric detonator when being used for manufacturing the seismic exploration electric detonator, can reduce the security management difficulty, and has great significance in development of seismic exploration electric detonators. The applicant performs a great deal of tests, and the testing results verify the technical effect of the composite ignition powder.

Description

technical field

[0001] The invention relates to the field of detonating materials, in particular to a compound ignition powder for seismic exploration electric detonators and a preparation method thereof. Background technique

[0002] Seismic exploration electric detonator is a kind of detonating equipment often used in seismic exploration engineering, and it is generally used in conjunction with seismic source charges. Seismic exploration electric detonators require good ignition consistency, short action time and sufficient detonation capacity. The ignition mechanism is as follows: passing current through the product makes the bridge wire of the ignition element in the product heat up, and when the temperature reaches the ignition point of the igniting powder, the electric igniting powder is caused to burn, and the product explodes.

[0003] Among them, the ignition process of the electric ignition powder used for the assembly of the electric detonator can be roughly divi...

Examples

Embodiment 1

[0034] Each component was weighed according to the following mass ratio: 25% potassium picrate, 45% potassium perchlorate, 15% red lead, and 15% lead thiocyanate. Take a polyvinyl alcohol aqueous solution with a mass concentration of 5% for subsequent use. Put the weighed potassium picrate, potassium perchlorate, red lead and lead thiocyanate into the mixing container, and add polyvinyl alcohol aqueous solution, and mix evenly to obtain the mixture. Apply the resulting mixture to the bridge wire of the ignition element to form a medicine ball. The add-on of polyvinyl alcohol aqueous solution is as the criterion that the medicine ball can be formed when the prepared mixture is coated on the bridge wire of the ignition element.

[0035] The ignition charge prepared in Example 1 was used to make an electric ignition charge, and assembled into an electric detonator for seismic exploration. At the same time, the seismic exploration electric detonator assembled with the 80 power g...

Embodiment 2

[0038] Each component was weighed according to the following mass ratio: 35% potassium picrate, 35% potassium perchlorate, 15% red lead, and 15% lead thiocyanate. Then take a polyvinyl alcohol aqueous solution with a mass concentration of 5-15% for subsequent use. Add the weighed potassium picrate, potassium perchlorate, red lead, and lead thiocyanate into the mixing container, and add polyvinyl alcohol aqueous solution, then manually stir with a wooden mixing stick to observe the dry dilution of the medicament (use polyvinyl alcohol Aqueous solution to adjust the dry dilution), and machine-mixed medicament for 1 hour to obtain a mixture. Apply the resulting mixture to the bridge wire of the ignition element to form a medicine ball.

[0039] The ignition powder prepared in this embodiment is used to make an electric ignition charge, and assembled into an electric detonator for seismic exploration. At the same time, the seismic exploration electric detonator assembled with th...

Embodiment 3

[0042] Each component was weighed according to the following mass ratio: 35% potassium picrate, 35% potassium perchlorate, 25% red lead, and 5% lead thiocyanate. Then take a polyvinyl alcohol aqueous solution with a mass concentration of 15% for subsequent use. Put the weighed potassium picrate, potassium perchlorate, red lead, and lead thiocyanate into the mixing container, add polyvinyl alcohol aqueous solution, and mix evenly to obtain a mixture. Apply the resulting mixture to the bridge wire of the ignition element to form a medicine ball. The add-on of polyvinyl alcohol aqueous solution is as the criterion that the medicine ball can be formed when the prepared mixture is coated on the bridge wire of the ignition element.

[0043] The ignition powder prepared in this embodiment is used to make an electric ignition charge, and assembled into an electric detonator for seismic exploration. At the same time, the seismic exploration electric detonator assembled with the 80 po...

technical field

[0001] The invention relates to the field of detonating materials, in particular to a compound ignition powder for seismic exploration electric detonators and a preparation method thereof. Background technique

[0002] Seismic exploration electric detonator is a kind of detonating equipment often used in seismic exploration engineering, and it is generally used in conjunction with seismic source charges. Seismic exploration electric detonators require good ignition consistency, short action time and sufficient detonation capacity. The ignition mechanism is as follows: passing current through the product makes the bridge wire of the ignition element in the product heat up, and when the temperature reaches the ignition point of the igniting powder, the electric igniting powder is caused to burn, and the product explodes.

[0003] Among them, the ignition process of the electric ignition powder used for the assembly of the electric detonator can be roughly divi...

Examples

Embodiment 1

[0034] Each component was weighed according to the following mass ratio: 25% potassium picrate, 45% potassium perchlorate, 15% red lead, and 15% lead thiocyanate. Take a polyvinyl alcohol aqueous solution with a mass concentration of 5% for subsequent use. Put the weighed potassium picrate, potassium perchlorate, red lead and lead thiocyanate into the mixing container, and add polyvinyl alcohol aqueous solution, and mix evenly to obtain the mixture. Apply the resulting mixture to the bridge wire of the ignition element to form a medicine ball. The add-on of polyvinyl alcohol aqueous solution is as the criterion that the medicine ball can be formed when the prepared mixture is coated on the bridge wire of the ignition element.

[0035] The ignition charge prepared in Example 1 was used to make an electric ignition charge, and assembled into an electric detonator for seismic exploration. At the same time, the seismic exploration electric detonator assembled with the 80 power g...

Embodiment 2

[0038] Each component was weighed according to the following mass ratio: 35% potassium picrate, 35% potassium perchlorate, 15% red lead, and 15% lead thiocyanate. Then take a polyvinyl alcohol aqueous solution with a mass concentration of 5-15% for subsequent use. Add the weighed potassium picrate, potassium perchlorate, red lead, and lead thiocyanate into the mixing container, and add polyvinyl alcohol aqueous solution, then manually stir with a wooden mixing stick to observe the dry dilution of the medicament (use polyvinyl alcohol Aqueous solution to adjust the dry dilution), and machine-mixed medicament for 1 hour to obtain a mixture. Apply the resulting mixture to the bridge wire of the ignition element to form a medicine ball.

[0039] The ignition powder prepared in this embodiment is used to make an electric ignition charge, and assembled into an electric detonator for seismic exploration. At the same time, the seismic exploration electric detonator assembled with th...

Embodiment 3

[0042] Each component was weighed according to the following mass ratio: 35% potassium picrate, 35% potassium perchlorate, 25% red lead, and 5% lead thiocyanate. Then take a polyvinyl alcohol aqueous solution with a mass concentration of 15% for subsequent use. Put the weighed potassium picrate, potassium perchlorate, red lead, and lead thiocyanate into the mixing container, add polyvinyl alcohol aqueous solution, and mix evenly to obtain a mixture. Apply the resulting mixture to the bridge wire of the ignition element to form a medicine ball. The add-on of polyvinyl alcohol aqueous solution is as the criterion that the medicine ball can be formed when the prepared mixture is coated on the bridge wire of the ignition element.

[0043] The ignition powder prepared in this embodiment is used to make an electric ignition charge, and assembled into an electric detonator for seismic exploration. At the same time, the seismic exploration electric detonator assembled with the 80 po...