JP5805382B2 - Detonator composition for detonator - Google Patents

Description

  The present invention relates to a detonator composition for a detonator that does not contain lead and heavy metals and designated chemical substances (PRTR method) and excludes environmental toxicity and human harmful substances.

Conventionally, detonator compositions for detonators that do not contain lead are known (see, for example, Patent Documents 1, 2, 3, and 4).
However, there has been a problem that it is insensitive to an explosive containing lead and misfiring is likely to occur.
Therefore, in order to solve this problem, Patent Document 4 proposes a non-toxic detonator mixture for use in a boxer-type detonator type detonator in which DDNP (diazodinitrophenol) and boron are combined.

The composition disclosed in Patent Document 4 includes calcium carbonate or strontium nitrate as an oxidant, nitrate as a fuel, and tetracene as a second explosive.
Explosives and explosives are highly sensitive and special explosives, and explosives are a mixture that easily ignites with little impact energy.

Explosives, on the other hand, are compound explosives that have the property of easily transferring from combustion to detonation once the reaction is initiated by receiving energy, and both have been used as indispensable for explosives.
However, conventional igniters, explosives, or explosives contain lead compounds, which are problematic from the viewpoint of environmental protection (see, for example, Patent Documents 5 and 6).
Considering from the viewpoint of worker protection, it contains substances harmful to the human body, which is a problem in handling and manufacturing.

In recent years, lead-free and detoxification has also been required for explosives for these reasons. Moreover, it is requested | required not to contain a heavy metal (metal element with a specific gravity of 4-5 or more).
These substances harmful to the human body are designated by the Chemical Substance Management Promotion Act (PRTR Law), and management obligations are established for chemical substances that may affect the environment and the human body.
For explosives, it is also within the scope of the law, and it is desirable to exclude harmful substances from the composition components, and it is expected that a complete exclusion will be required in the future.

US Pat. No. 4,675,059 US Pat. No. 4,963,201 U.S. Pat. No. 4,363,679 Japanese translation of PCT publication No. 7-500562 US Pat. No. 4,608,102 US Pat. No. 4,581,082

On the other hand, in Patent Document 1, manganese of manganese dioxide in the composition component corresponds to a heavy metal, and manganese dioxide also corresponds to a substance harmful to the human body specified in the PRTR method.
Patent Document 2 excludes lead and heavy metals from the composition components, but does not exclude substances harmful to the human body (nitrate ester (nitroglycerin)) specified in the PRTR method.
Patent Document 3 excludes lead from the composition components, but does not exclude substances harmful to the human body (nitrate ester (nitroglycerin)) designated by the PRTR method.

Patent Document 4 excludes lead from the composition component, but does not exclude a substance (nitroglycerin) harmful to the human body specified in the PRTR method.
Patent Document 5 excludes substances harmful to the human body specified in the PRTR method, but metal powders such as zinc peroxide zinc and tantalum in the composition components correspond to heavy metals.
In Patent Document 6, manganese of manganese dioxide in the composition component corresponds to a heavy metal, and manganese dioxide also corresponds to a substance harmful to the human body specified in the PRTR method.

  It is an object of the present invention to provide a detoxification initiator that does not contain lead and heavy metals, and PRTR law-designated substances, and has the same functions and performance as conventional initiators containing lead and heavy metals and PRTR law-designated substances. To do.

The detonator composition for a detonator according to the invention of claim 1 does not include heavy metals having a specific gravity of 4 or more and chemical substances designated by the Chemical Substance Management Promotion Act (PRTR method), DDNP (diazodinitrophenol), potassium nitrate, strontium nitrate, Oxidizing agent consisting of any one of magnesium carbonate, calcium carbonate, potassium persulfate or potassium chlorate , calcium silicide, or a sensitizer consisting of glass powder and calcium silicide , gum arabic (Gum Arabic) or guar gum ( characterized in that comprising a binder comprising a water-soluble rubber Guar gum).

The detonator composition for a detonator according to the invention of claim 2 does not contain heavy metals having a specific gravity of 4 or more and chemical substances designated by the Chemical Substances Management Promotion Act (PRTR method ), and 24% to 40% by weight of DDNP (diazodinitrophenol) And 30% by weight to 46% by weight of an oxidizing agent consisting of potassium nitrate, strontium nitrate, magnesium carbonate, calcium carbonate, potassium persulfate, or potassium chlorate , and calcium silicide, or glass powder and calcium silicide. sensitizer and 1.5 wt% to 24 wt%, that consists of gum arabic (gum Arabic) or guar (guar gum) binder 0.5 wt to 8% by weight consisting of water-soluble rubber of (outer percentage) Features.

The detonator composition for a detonator according to the invention of claim 3 does not include heavy metals having a specific gravity of 4 or more and chemical substances designated by the Chemical Substance Management Promotion Act (PRTR method ), and 24 wt% to 40 wt% of DDNP (diazodinitrophenol) When a 30 wt% to 46 wt% potassium nitrate, silicofluoride of calcium and 5 wt% to 24 wt%, and glass powder 1.5 wt% to 15 wt%, gum arabic (gum Arabic) or guar (guar gum) It is characterized by comprising 0.5 to 8% by weight (outer percent) of a binder made of a water-soluble rubber.

The detonator composition for a detonator according to the invention of claim 4 does not contain heavy metals having a specific gravity of 4 or more and chemical substances designated by the Chemical Substances Management Promotion Act (PRTR method ), and 24 wt% to 30 wt% of DDNP (diazodinitrophenol) When, water of a 40 wt% to 46 wt% potassium nitrate, and 14 wt% to 24 wt% silicofluoride of calcium, and glass particles 4% to 8 wt%, gum arabic (gum Arabic) or guar (guar gum) It is characterized by comprising 0.5 to 8% by weight (outer percent) of a binder made of a conductive rubber.

Primer for initiator composition according to the invention of claim 5 is the primer for initiator composition according to the invention of claim 3, the sum of the amount ratio between the front Ki珪 of calcium and front Kiga Las powder, It is characterized by being 11.5 wt% to 30 wt%.

Primer for initiator composition according to the invention of claim 6 is the detonator for detonating composition according to any one of the claims 1 to 5, the front Kiga Las powder, silicate glass (SiO ₂ ) System, soda-lime glass (Na ₂ O—CaO—SiO ₂ ) system or potassium lime glass (K ₂ O—CaO—SiO ₂ ) system.

  According to the present invention, while satisfying the sensitivity standard and launch performance equivalent to those of conventional explosives containing lead, heavy metals, and PRTR-designated substances, contamination of drug handlers is prevented, and environmental pollution during use is prevented. It is possible to provide a detoxifying detonator that does not contain a PRTR-designated substance to prevent.

It is a top view which shows the gun detonator used for this embodiment. It is sectional drawing which shows the gun detonator of FIG. It is a figure which shows the mixing | blending procedure of the explosive used for the gun detonator of FIG. It is a front view which shows the falling ball sensitivity test apparatus of the gun detonator of FIG. It is the A section enlarged view of FIG. It is a figure which shows the sensitivity test data of a glass powder ratio change. It is a figure which shows the sensitivity test data of a calcium silicide ratio change.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.
In the present embodiment, a case where the detonator composition according to this embodiment is applied to the detonator 3 of the gun detonator 1 will be described.
1 and 2 show a gun detonator (12.7 mm detonator (P50 detonator)) 1 used in this embodiment.

The gun detonator 1 includes a cup-shaped detonator body 2 made of copper, copper alloy, or aluminum alloy, a detonator 3 that is weighed and filled in the detonator body 2, and a filled detonator 3. The disc 4 is made of a paper foil and a water-resistant paper foil to be placed, and the ignition gold 5 made of copper, copper alloy or aluminum alloy is placed on the disc 4.
In this embodiment, a 12.7 mm bullet detonator (P50 detonator) has been described. However, the present invention is not limited to this, and any gun detonator may be used. Here, “for gun” refers to a diameter of 12.7 mm or less. In addition, “P” of “P50 detonator” means Percussion, and “50” means 0.5 inch (12.7 mm).

Next, a procedure for assembling the gun detonator 1 used in this embodiment will be described.
(1) The detonator 3 is weighed in an amount of 70 to 100 mg (in the case of a 12.7 mm detonator) as a dry weight.
(2) The disc 4 is inserted into the detonated detonator body 2.
(3) After inserting the disk 4, the explosive 3 is temporarily compressed using a scissors.
(4) After provisional pressure filling, press filling is performed.
(5) After the main compression, the ignition gold 5 is inserted into the detonator body 2 and press-fitted with a press.

Next, the composition of the explosive 3 according to this embodiment will be described.
Priming agent 3 is DDNP (priming agent) 24 wt% to 40 wt%, potassium nitrate (oxidizing agent) 30 wt% to 46 wt%, aluminum powder (flammable agent) 0 wt% to 15 wt%, tetracene (flammable agent) 0 wt% to 5 wt%, calcium silicide (sensitizer) 5 wt% to 24 wt%, glass powder (sensitizer) 1.5 wt% to 15 wt%, rubber liquid (binder) 0.5 wt% It is composed of ˜8% by weight (outer percent).

Next, the mixing | blending procedure of the explosive 3 is demonstrated based on FIG.
(1) Weigh potassium nitrate, aluminum powder, calcium silicide, and glass powder.
(2) Mix the materials weighed in (1).
(3) The rubber liquid and tetracene are weighed.
(4) Add the weighed rubber liquid and tetracene to the material mixed in (2) and mix.
(5) Weigh DDNP.
(6) Add the weighed DDNP to the material mixed in (4) and mix.
(7) Collect the material mixed in (6).

Next, a verification test of the composition width of the detonator 3 of the gun detonator 1 was performed.
In the composition width verification test, the allowable range of the composition components is verified by a falling ball sensitivity test.
The test method verifies the allowable range of the composition component by a falling ball sensitivity test.
The test method of the falling ball sensitivity test is as follows.
(1) The firing needle 11 and the electromagnet 17 of the test apparatus 10 shown in FIG.
(2) As shown in FIG. 5, the detonator holder 13 that has been attached is attached to the detonator holder support 14.

(3) As shown in FIG. 4, the closure plug 12 is closed, and a steel ball (weight 225 g, diameter 38 mm) 16 is attached to the electromagnet 17.
(4) The attached steel ball 16 is dropped and the firing / non-fire of the detonator 1 is recorded.
(5) The dropped steel ball 16 is removed, the closure plug 12 is opened, and the detonator holder 13 is taken out.

(6) Repeat the procedure from (2) to (5) until 50 tests are completed with a drop of 8 inches, and record the number of ignition / non-firing.
(7) By the above method, the drop height is increased by 1 inch by 9, 10, 11 inches, etc., and is increased to the drop height at which all 50 samples are ignited.
(8) Next, the drop height is lowered by 7, 6, 5 inches,..., And the drop height is lowered by 1 inch at a time until the drop height at which all 50 samples are non-fired.

The evaluation method is as follows.
(1) The average critical drop height (H50) and standard deviation (S) are obtained from the above-mentioned record of the falling ball sensitivity test.
(2) The sensitivity standard of the 12.7 mm detonator is as shown in Table 1.

(3) Substituting the average critical drop (H50) and standard deviation (S) obtained in (1) into the formulas (H50 + 5S) and (H50-2S) shown in Table 1, and evaluating whether or not the standard is satisfied To do.
In addition, the test method and evaluation method of a falling ball sensitivity test are based on MIL-P-749. Here, "MIL" is an abbreviation for "MILITARY SPECIFICATION" (US military specification). The specification number is acquired by the product. “MIL-P-749” is the “PRIMERS, PERCUSSION, FOR SMALL ARMS AMMUNITION” specification number of the detonator for small arms ammunition.
Next, Experiment No. is demonstrated based on Table 2. FIG.

In Experiment No. 1 to Experiment No. 10, the compounding ratio of the glass powder as the sensitizer is 0%, 1.5%, 2%, 3%, 7%, 9%, 15%. Check if there is a difference in the sensitivity of the% sample.
Also, whether there is a difference in sensitivity between samples of calcium silicate, which is another sensitizer, having a blending ratio of 5% by weight, 10% by weight, 15% by weight, 20% by weight, 22% by weight, and 24% by weight. Confirm.

  Further, for components having roles other than sensitizers, the blending ratio of DDNP is 24%, 25%, 28%, 30%, 40%, and the ratio of potassium nitrate is 30%, 32%. %, 35% by weight, 40% by weight, 43% by weight, 45% by weight, 45.5% by weight, 46% by weight, 0% by weight, 0.5% by weight, 2% by weight, 3% by weight of aluminum powder %, 7%, 9%, 15%, tetracene compounding ratio of 0%, 0.5%, 1%, 3%, 4.5%, 5%, rubber liquid The sensitivity of the sample is varied by changing the compounding ratio within the range of 0.5% by weight, 2% by weight, 4% by weight, 5% by weight, 6% by weight, and 8% by weight. Check whether there is a difference between the two.

Next, from the H50 and standard deviation of each level sample, it was determined that H50 + 5σ = 15 inches or less and H50-2σ = 2.5 inches or more.
Here, the criterion is based on MIL-P-749.
Next, Table 3 shows the blending ratio and test results.

6 and 7 are diagrams showing the results of the sensitivity test.
According to the sensitivity test data of the glass powder ratio change shown in FIG. 6, Experiment No. 2 to Experiment No. 9 excluding Experiment No. 1 and Experiment No. 10 satisfy the sensitivity standard. It can be confirmed that the composition range is 1.5 wt% to 15 wt%.

According to the ratio of calcium silicate, another sensitizer, and the total sensitizer of glass powder, the sensitivity naturally becomes sharper as it increases, but glass powder is more effective as a sensitizer. high.
The reason is that in Experiment No. 2 and Experiment No. 6, the total amount of sensitizer is 30% by weight, but in Experiment No. 2 in which the ratio of glass powder is large, the sensitivity becomes sharper. . It can be confirmed that the total ratio of sensitizers satisfying the sensitivity standard is preferably 11.5 to 30% by weight, and the ratio of calcium silicide is at least 5 to 24% by weight.
The blending ratio and test results are shown in Table 4 and FIG.

  According to Table 4, since Experiment No. 2 to Experiment No. 9 excluding Experiment No. 1 and Experiment No. 10 satisfy the sensitivity standard, DDNP which is the remaining component having no role of a sensitizer. As for the ratio of potassium nitrate, aluminum powder and tetracene, at least the ratio of DDNP is 24% to 40% by weight, the ratio of potassium nitrate is 30% to 46% by weight, and the ratio of aluminum powder is 0% to 15% by weight. The ratio of tetracene is 0% by weight to 5% by weight, and the ratio of the rubber liquid is 0.5% by weight to 8% by weight.

  As a result, the composition of the initiator 3 satisfying the sensitivity standard in the embodiment of the present invention is at least a blending ratio of DDNP of 24 wt% to 40 wt%, a blending ratio of potassium nitrate of 30 wt% to 46 wt%, The compounding ratio of calcium silicide is 5 to 24% by weight, the compounding ratio of aluminum powder is 0 to 15% by weight, the compounding ratio of tetracene is 0 to 5% by weight, and the compounding ratio of glass powder is 1.5. It was confirmed that the blending ratio of the rubber liquid was 0.5% by weight to 8% by weight.

  Next, in order to confirm the firing performance of the gun detonator, a 12.7 mm bullet firing test using the gun detonator 1 was conducted. The test method was performed in accordance with US ORD-M608-PM (Ordnance Proof Manual Vol. III, Test Methods for Small Arms Ammunition).

Experiment No. 11 to Experiment No. 22 of the gun detonator 1 used in the firing test will be described based on Table 5.
Experiment No. 11 to Experiment No. 13 are samples that do not contain aluminum powder and tetracene, Experiment No. 14 to Experiment No. 16 are samples in which the aluminum powder is 5 wt%, 3 wt%, and 0.5 wt%, Experiment No. 17 to Experiment No. 19 are samples in which tetracene is 5 wt%, 3 wt%, and 0.5 wt%, and Experiment No. 20 to Experiment No. 22 are samples in which aluminum powder and tetracene coexist. .
The samples of Experiment No. 11 to Experiment No. 22 are included in the blending ratio of Experiment No. 2 to Experiment No. 9 that satisfies the sensitivity standard.

  The composition of the explosive 3 in this embodiment as a 12.7 mm bullet has a blending ratio of DDNP of 24 wt% to 30 wt%, a blending ratio of potassium nitrate of 40 wt% to 46 wt%, and a blending ratio of calcium silicide of 14. Wt% to 24 wt%, aluminum powder blending ratio of 0 wt% to 5 wt%, tetracene blending ratio of 0 wt% to 5 wt%, glass powder blending ratio of 4 wt% to 8 wt%, rubber liquid The blending ratio is 0.5 wt% to 8 wt%.

In the present embodiment, the blending ratio of the rubber liquid is 5% by weight, but the same result is obtained if the blending ratio of each component is within the effective range.
In addition, in this embodiment, the amount of filling of the explosive 3 of the gun detonator 1 is performed within the range of 70 mg to 100 mg in dry mass, and the same result is obtained as long as it is within this range.

Next, Table 6 shows the sensitivity test data of the gun detonator 1 of Experiment No. 11 to Experiment No. 22. The test method of the sensitivity test is the same as the method described above. For reference, data on tricine-based detonators using tricines containing lead are also shown.
It can be seen that the firing sensitivity of the gun detonator of Experiment No. 11 to Experiment No. 22 satisfies the sensitivity standard.

Next, a firing test was conducted in the case where the gun detonator 1 of Experiment No. 11 to Experiment No. 22 was incorporated in a 12.7 mm actual package. In the firing test, a 12.7 mm actual package was incubated for 8 hours at three temperatures of high temperature (+ 51 ° C.), normal temperature (+ 21 ° C.), and low temperature (−40 ° C.), and then for each experiment No. 11 to experiment No. 22 10 data were acquired. For reference, data on tricine-based detonators using tricines containing lead are also shown.
In this embodiment, the same lot product with the amount of propellant fixed at 15.2 g is used. However, the combustion performance of each lot of the detonator and the propellant is reflected so as to be an appropriate value. You may adjust and use the amount of projectiles.

The speed data acquired in the actual package firing test will be described based on Table 7. The velocity was acquired at 23.8 m points in front of the muzzle.
It can be seen that the average values and standard deviations of Experiment No. 11 to Experiment No. 22 are equivalent to those of the trisinate-type detonator even when the heat retention temperatures are different.

The maximum pressure data acquired in the actual package firing test will be described based on Table 8. The maximum pressure was acquired at the joint position between the drug cartridge and the flying object.
It can be seen that the average values and standard deviations of Experiment No. 11 to Experiment No. 22 are equivalent to those of the trisinate-type detonator even when the heat retention temperatures are different.

The operation time data acquired in the actual package firing test will be described based on Table 9. The operation time is the time from the detonator hitting with the firing pin to the projectile ejection.
It can be seen that the average values and standard deviations of Experiment No. 11 to Experiment No. 22 are equivalent to those of the trisinate-type detonator even when the heat retention temperatures are different.

  From the speed, maximum pressure, and operation time data obtained in the actual package launch test, the gun detonator of Experiment No. 11 to Experiment No. 22 satisfies the launch performance of the actual 12.7 mm package even when the temperature is different. I understand that

Next, a launch test was conducted when the gun detonator 1 of Experiment Nos. 12, 15, 18, and 21 used in the actual package launch test was incorporated in a 12.7 mm empty package. In the firing test, a 12.7 mm actual package was incubated for 8 hours at three temperatures: high temperature (+ 51 ° C.), normal temperature (+ 21 ° C.), and low temperature (−40 ° C.), and then each experiment No. 12, 15, 18, 21 On the other hand, 10 data were obtained. For reference, data on tricine-based detonators using tricines containing lead are also shown.
In the present embodiment, the same lot product with the amount of propellant fixed to 3.5 g is used, but it reflects the combustion performance of each lot of the detonator and the propellant so that it becomes an appropriate value. You may adjust and use the amount of projectiles.

The propellant used for the empty package is different from the propellant used for the actual package, and generally has a high burning rate. From the following empty packet launch performance data, it is confirmed whether or not the propellant with different fuel speed can be handled.
The maximum pressure data acquired in the empty package firing test will be described based on Table 10. The maximum pressure was obtained at the same position as the actual package.
It can be seen that the average values and standard deviations of Experiment Nos. 12, 15, 18, and 21 are equivalent to those of the trisinate-type detonator even when the temperature is different.

The pressure rise time data acquired in the empty package firing test will be described based on Table 11. The pressure rise time is the time from the detonator strike with the firing pin until the maximum pressure is reached.
It can be seen that the average values and standard deviations of Experiment Nos. 12, 15, 18, and 21 are equivalent to those of the trisinate-type detonator even when the temperature is different.

  From the maximum pressure and pressure rise time data obtained in the empty package launch test, the gun detonators of Experiment Nos. 12, 15, 18, and 21 have the performance of 12.7 mm empty package even when the temperature is different. Is satisfied, and the same results are obtained for the remaining Experiment Nos. 11, 13, 14, 16, 17, 19, 20, and 22 of Experiment No. 11 to Experiment No. 22.

From the result of the launch test of the 12.7 mm actual package and the empty package, the composition of the explosive 3 satisfying the launch performance in this embodiment as a 12.7 mm bullet is at least a blending ratio of DDNP of 24 wt% to 30 wt%. The compounding ratio of potassium nitrate is 40% to 46% by weight, the compounding ratio of calcium silicide is 5% to 28% by weight, the compounding ratio of aluminum powder is 0% to 5% by weight, and the compounding ratio of tetracene is 0% by weight. It was confirmed that the blending ratio of the glass powder was -5 wt%, the blending ratio of the glass powder was 4-8 wt%, and the blending ratio of the rubber liquid was 0.5-8 wt%.
In addition, it is preferable that the filling amount of the initiator 3 is in the range of 70 mg to 100 mg in terms of dry mass.

In the present invention, the composition range of the binder (rubber liquid) is 0.5 wt% to 8 wt%.
The role of the binder is to stably hold the blended powder in the detonator.
When it is less than 0.5% by weight indicated by the lower limit value, stable holding cannot be performed. If stable maintenance is not possible, the risk of ignition increases due to impacts such as transportation, resulting in a safety problem.
In the case of 8% by weight or more shown by the upper limit value, there is no problem of stable retention, but the viscosity becomes large, resulting in production problems.

In the present invention, the role of the aluminum powder is to stably ignite the propellant, which has an effect of affecting the amount of flame at the time of detonation.
The composition range of the aluminum powder in the present invention depends on the combustion characteristics of the propellant used. However, when non-ignition of the propellant occurs, it is not possible to contain 0.5 wt% or more of the aluminum powder. There is an effect of improving ignition, and when the aluminum powder is contained in an amount exceeding 15% by weight, the deflagration phenomenon of the propellant occurs, so the content is made 0.5% by weight to 15% by weight.

In the present invention, the role of tetracene is to stably burn the explosive powder, and since the ignition point is lower than tetracene (140 ° C.) than DDNP (180 ° C.) as an initiator, by adding tetracene, There is an effect that the energy generated by the firing pin can be continuously supplied to the entire explosion in the detonator.
The composition range of tetracene in the present invention depends on the magnitude of the impact energy acting on the detonator, but when explosion combustion is interrupted, it is combusted by containing tetracene in an amount of 0.5% by weight or more. There is an effect of improving the interruption, and if tetracene is included in an amount exceeding 5% by weight, the burning rate of the explosive powder becomes larger than necessary and exceeds the allowable strength of the detonator body 2, so that 0.5% to 5% by weight. %.

In the present invention, regarding the effect when aluminum powder and tetracene coexist, it has a function as a detonator for a gun, at least in the composition range of the present invention, based on the results of the sensitivity test and the actual package and empty package launch test. Can be confirmed.
Similarly, as for the effect when aluminum powder and tetracene are not included, it has a function as a detonator for a gun, at least in the composition range of the present invention, based on the results of the sensitivity test and the actual package and empty package launch test. I can confirm.

The glass powder used for this invention uses the silicate glass which does not contain a lead and a heavy metal in a component, and does not contain a substance harmful | toxic to a human body.
Silicate glass containing a SiO ₂ 98% or more (SiO ₂₎ system, a soda lime glass _{(Na 2 O-CaO-SiO} 2) system or potash lime glass _{(K 2 O-CaO-SiO} 2) system.
The soda-lime glass _{(Na 2 O-CaO-SiO} 2) system, SiO ₂ 65 wt% to 75 wt%, Na ₂ O10 wt% to 20 wt%, CaO5 wt% to 15 wt%, Al ₂ O ₃ 0 .5% to 4 wt%, glass of less than MgO0.5% to 4%, Fe ₂ O ₃ 2% by weight.

The potash-lime glass _{(K 2 O-CaO-SiO} 2) system, SiO ₂ 65 wt% to 75 wt%, K ₂ O10 wt% to 20 wt%, CaO5 wt% to 15 wt%, Na ₂ O15 wt% less, Al ₂ O ₃ 0.5 wt% to 4 wt%, glass of less than MgO0.5% to 4%, Fe ₂ O ₃ 2% by weight.
The glass powder used in the present embodiment is a grade GP105 (250 μm to 106 μm) manufactured by Potters Valoti Co., Ltd., and its composition is SiO ₂ 72 wt%, Al ₂ O ₃ 2.0 wt%, CaO 9 wt%. MgO 3.4 wt%, Na ₂ O 13 wt%. The particle diameter is 150 μm to 100 μm (commercially used glass powder is used after particle size adjustment by sieving).

1 Gun Detonator 2 Detonator 3 Detonator 4 Disc 5 Ignition Gold

Claims (6)

Does not include heavy metals with a specific gravity of 4 or more and chemical substances designated by the Chemical Substance Management Promotion Law (PRTR Law)
DDNP (diazodinitrophenol),
An oxidizing agent comprising any of potassium nitrate, strontium nitrate, magnesium carbonate, calcium carbonate, potassium persulfate, or potassium chlorate ;
Calcium silicide, or a sensitizer consisting of glass powder and calcium silicide ,
A binder made of water-soluble rubber of gum arabic or guar gum;
Lightning pipe initiator composition you characterized in that it consists of. Does not include heavy metals with a specific gravity of 4 or more and chemical substances designated by the Chemical Substance Management Promotion Law (PRTR Law)
DDNP (diazodinitrophenol) 24 wt% to 40 wt%,
30% to 46% by weight of an oxidizing agent comprising any one of potassium nitrate, strontium nitrate, magnesium carbonate, calcium carbonate, potassium persulfate, or potassium chlorate ;
Calcium silicide, or 1.5 to 24% by weight of a sensitizer composed of glass powder and calcium silicide ,
0.5% to 8% by weight (external ratio) of a binder made of a water-soluble rubber of gum arabic or guar gum
Lightning pipe initiator composition you characterized in that it consists of. Does not include heavy metals with a specific gravity of 4 or more and chemical substances designated by the Chemical Substance Management Promotion Law (PRTR Law)
DDNP (diazodinitrophenol) 24 wt% to 40 wt%,
30% to 46% by weight of potassium nitrate,
Silicofluoride of calcium and 5 wt% to 24 wt%,
Moth and Las powder 1.5 wt% to 15 wt%,
0.5% to 8% by weight (external ratio) of a binder made of a water-soluble rubber of gum arabic or guar gum
Lightning pipe initiator composition you characterized in that it consists of. Does not include heavy metals with a specific gravity of 4 or more and chemical substances designated by the Chemical Substance Management Promotion Law (PRTR Law)
DDNP (diazodinitrophenol) 24 wt% to 30 wt%,
40% to 46% by weight of potassium nitrate,
Silicofluoride of calcium and 14 wt% to 24 wt%,
Moth and Las powder 4% to 8% by weight,
0.5% to 8% by weight (external ratio) of a binder made of a water-soluble rubber of gum arabic or guar gum
Lightning pipe initiator composition you characterized in that it consists of. In claim 3 lightning pipe initiator composition according,
Before SL sum of the amount ratio of the calcium silicide and the front Kiga Las powder, lightning pipe initiator composition you characterized by a 11.5% to 30% by weight. In lightning pipe initiator composition according to any one of claims 1 to 5,
Wherein the front Kiga Las powder, silicate glass (SiO ₂₎ system, a soda lime glass _{(Na 2 O-CaO-SiO} 2) system or potash lime glass _{(K 2 O-CaO-SiO} 2) system It is that lightning pipe initiator composition and.

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