About service-life terms of asphalted igniting fuse

Authors
DOI:
https://doi.org/10.34169/2414-0651.2021.3(31).59-66
Keywords:
Array, Array, Array, Array
Abstract

This work has investigated the physicochemical (heat resistance, frost resistance, water resistance) and specific (burning time of the cord segment) characteristics of the asphalted igniting fuse after 30 years of storage at abovezero temperatures in hermetic packaging. Such an igniting fuse after long storage showed characteristics which completely correspond to normative and technical documentation. The thermic investigations of the materials have been put into practice by the TG-DTA method, which make the construction of an igniting fuse (the central thread, the smoke cord powder, the first braid, the second braid, the third braid) on characteristics of temperature of the beginning of thermal decomposition and temperature of the beginning of intensive decomposition. The obtained results showed that the studied thermal characteristics did not change during 30 years of storage. The behavior of igniting fuse samples in unsealed packaging in an atmosphere of different relative humidity and its influence on the fuse burning rate have been studied. According to the obtained results, the coefficients of moisture diffusion are calculated, which are, depending on the relative humidity of the atmosphere, (1,92 – 3,51) × 10-8 cm2/s. It was also found that the insulating layers of the igniting fuse have properties capable of resisting the penetration of moisture for at least 200 days in a humid atmosphere (92 % relative humidity) to maintain its burning rate.

Author Biographies
  1. Mykhaylo Buller, Shostka Institute of Sumy State University

    Doctor of Technical Sciences, Professor
    Department Professor of Chemical Technology of Highmolecular Compounds of Shostka Institute of Sumy State University
    Shostka, Ukraine

  2. Valery Robotko, State Scientific - Research Institute of Chemical Products (Russia)

    Candidate of technical sciences
    Chief of laboratory of State Scientific-Research Institute of Chemical Products
    Shostka, Ukraine

  3. Olga Novobranets, State Scientific-Research Institute of Chemical Products

    Engineer of State Scientific-Research Institute of Chemical Products
    Shostka, Ukraine

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Published
2022-02-01
Issue
Vol. 31 No. 3 (2021): Weapons and military equipment
Section
ENGINEERING EQUIPMENT
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How to Cite

About service-life terms of asphalted igniting fuse. (2022). Weapons and Military Equipment, 31(3), 59-66. https://doi.org/10.34169/2414-0651.2021.3(31).59-66