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R. Meyer J. Köhler A. Homburg Explosives

R. Meyer J. Köhler A. Homburg Explosives

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Pentastit<br />

The compound is prepared by cautious partial nitration of pentaerythritol.<br />

The free hydroxyl group can react with an acid, e.g., acrylic acid; the<br />

polymer PETRIN acrylate serves as a binder.<br />

Pentastit<br />

Name for W PETN phlegmatized with 7% wax.<br />

detonation velocity, confined:<br />

7720 m/s = 23700ft/s at r = 1.59 g/cm3 deflagration point: 192–194 °C = 378 – 390 °F<br />

impact sensitivity: 3 kp m = 29 N m<br />

friction sensitivity: crackling at 24 kp = 240 N<br />

pistil load<br />

critical diameter of steel sleeve test:<br />

begins to explode at 4 mm P.<br />

Pentolite<br />

Pourable mixtures of W TNT and PETN, used for shaped charges and<br />

for cast boosters (for initiation of insensitive explosives, such as<br />

ANFO). A 50:50 mixture has a density of 1.65 g/cm 3 ; the detonation<br />

velocity is 7400 m/s.<br />

Perchlorate <strong>Explosives</strong><br />

Perchlorat-Sprengstoffe; explosifs perchlorates<br />

In these explosives, the main oxidizer is sodium, potassium, or ammonium<br />

perchlorate; the combustible components consist of organic nitro<br />

compounds, hydrocarbons, waxes, and other carbon carriers. Nowadays,<br />

these explosives are uneconomical and are no longer industrially<br />

produced.<br />

A mixture of 75% KClO4 and 25% asphalt pitch, melted together<br />

under the name of Galcit, was used as a rocket propellant and was<br />

thus a precursor of the modern W Composite Propellants.<br />

Percussion Cap<br />

244<br />

Anzündhütchen; amorce<br />

Percussion caps serve as primers for propellant charges. In mechanical<br />

percussion caps, a friction-sensitive or impact-sensitive priming

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