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Igniting powder composition for igniters

A technology of igniter and ignition powder, which is applied to ignition devices, explosives, belt tensioners, etc., can solve the problems of high manufacturing cost and difficult to control metal powder manufacturing, and achieve the effect of improving safety and rapid response.

Inactive Publication Date: 2013-04-17
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technique requires the metal powder to be made into a special shape, and there is a disadvantage that it is difficult to control the production of the metal powder and the production cost becomes high.

Method used

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  • Igniting powder composition for igniters
  • Igniting powder composition for igniters
  • Igniting powder composition for igniters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Nitrocellulose as a binder was dissolved in isoamyl acetate to prepare an isoamyl acetate solution having a binder concentration of 2% by mass. Next, to a mixture of zirconium hydride (particle size: 2.5 μm) 8.55 g, tungsten powder (particle size: 0.6 μm to 0.8 μm) 9.6 g, potassium perchlorate 11.85 g (particle size: 12 μm to 18 μm), and magnesium oxide 0.15 g After adding 1.5 g of an isoamyl acetate solution (binder concentration: 2 mass %) of the binder, 11 g of isoamyl acetate was added and mixed with a mixer. After the mixing was completed, the obtained mixture was spread out on a pallet and air-dried. After air-drying, it was granulated by passing through a sieve with 24 mesh holes (aperture of about 0.8 mm to 0.6 mm), and then the granulated product was put into a dryer and dried at 60° C. to obtain Example 1 igniter with ignition powder (about 30g).

Embodiment 2～ Embodiment 4

[0075] Furthermore, the composition ratio of each component was changed as shown in Table 1, and the ignition powder for igniters of Examples 2 to 4 was prepared by the same preparation method as in Example 1.

Embodiment 5

[0091] Except for adding 6.3 g of titanium hydride (particle size: 8.0 μm), 9.6 g of tungsten powder (particle size: 0.6 μm to 0.8 μm), and 14.1 g of potassium perchlorate (particle size: 12 μm to 18 μm), The same production method as in Example 1 (addition of magnesium oxide: 0.15 g, and 1.5 g of an isoamyl acetate solution of nitrocellulose as a binder (binder concentration: 2 mass %)) The ignition of Example 5 was prepared igniter powder.

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Abstract

Provided is an igniting powder composition which satisfies the current ignition sensitivity required for the igniting powder to be used in igniters that are actuated by an electric signal and which exhibits reduced friction sensitivity. An igniting powder composition for igniters, characterized by being prepared by blending together (A) a metal hydride, (B) at least one kind of metal powder selected from the group consisting of tungsten powder, molybdenum powder, aluminum powder, titanium powder and magnesium powder, and (C) a perchloric acid salt.

Description

technical field [0001] The present invention relates to an ignition powder composition for an igniter and an igniter using the ignition powder composition, in particular to an ignition powder composition for an electric detonator or an airbag equipped in an automobile, etc., and an ignition powder composition using the same. An igniter of an ignition powder composition (so-called squib), in particular, to an ignition powder composition for an igniter which satisfies the required current ignition sensitivity while reducing the friction sensitivity, and the ignition powder composition using the same igniter. Background technique [0002] Various types of igniters have been conventionally developed as igniters mounted in gas generators used for safety devices of automobiles such as airbags and seat belt pretensioners. Such an igniter is usually filled with an ignition charge that is ignited by minute electrical energy, and the ignition charge has the function of rapidly respon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06C7/00B60R21/264B60R22/46C06B27/00
CPCB60R2021/26029C06B33/06C06C9/00C06D5/06
Inventor 福元麻衣子木村歩
Owner NIPPON KAYAKU CO LTD
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