Pourability Enhancement of PETN Explosive Powders

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Description

Manufacture of precision detonators requires the pelletizing of very fine, organic, crystalline explosive powders. Production of pellets in automatic machines within critical dimensional and weight tolerances requires that the powders pour uniformly into die cavities. The pellets must be able to be initiated with low energy and have a predictable energy output. Modifications to needle-like crystalline PETN explosive powders to make them pourable were introduced by the application of about 80 A thick polymeric coatings to the individual crystals, followed by a controlled agglomeration into a spherical prill. Microencapsulation techniques provided the key to achieving the result using less than ... continued below

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35 - 55

Creation Information

Vannet, M.D. & Ball, G.L. January 1, 1987.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 18 times . More information about this article can be viewed below.

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  • Mound Plant (U.S.)
    Publisher Info: MOUND (Mound Plant, Miamisburg, OH (United States))
    Place of Publication: Miamisburg, Ohio

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Description

Manufacture of precision detonators requires the pelletizing of very fine, organic, crystalline explosive powders. Production of pellets in automatic machines within critical dimensional and weight tolerances requires that the powders pour uniformly into die cavities. The pellets must be able to be initiated with low energy and have a predictable energy output. Modifications to needle-like crystalline PETN explosive powders to make them pourable were introduced by the application of about 80 A thick polymeric coatings to the individual crystals, followed by a controlled agglomeration into a spherical prill. Microencapsulation techniques provided the key to achieving the result using less than 0.5 wt. % coating (an order of magnitude less coating than in usual PBX systems). These coatings did not appreciably alter the energy required to initiate and significantly increased the strength of the pellets. A key point demonstrated, which may be translated to other applications, was that powders that exhibit performance based on physical characteristics could have their handling and strength properties tailored with little change in their primary function.

Physical Description

35 - 55

Source

  • Journal Name: Journal of Energetic Materials; Journal Volume: 5; Journal Issue: 1

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  • Report No.: MLM-3365J
  • Grant Number: None
  • DOI: 10.1080/07370658708012348 | External Link
  • Office of Scientific & Technical Information Report Number: 1028470
  • Archival Resource Key: ark:/67531/metadc846963

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Creation Date

  • January 1, 1987

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

Description Last Updated

  • Feb. 17, 2017, 3:21 p.m.

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Vannet, M.D. & Ball, G.L. Pourability Enhancement of PETN Explosive Powders, article, January 1, 1987; Miamisburg, Ohio. (digital.library.unt.edu/ark:/67531/metadc846963/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.