Influence of the Pyrotechnic Igniter Composition Aging on Explosion Parameters of Dispersed Dusts
A commercially available pyrotechnic igniter was used according to the EN 14034 and ASTM E1226a Standards to study the explosiveness of dispersed dusts. Its pyrotechnic composition consists of 1.2 g of zirconium (40% wt.), barium peroxide (30% wt.) and barium nitrate (30% wt.). The energy released d...
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MDPI AG
2021-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/22/10728 |
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| author | Zuzana Szabová Richard Kuracina Martin Sahul Miroslav Mynarz Petr Lepík László Kosár |
| author_facet | Zuzana Szabová Richard Kuracina Martin Sahul Miroslav Mynarz Petr Lepík László Kosár |
| author_sort | Zuzana Szabová |
| collection | DOAJ |
| description | A commercially available pyrotechnic igniter was used according to the EN 14034 and ASTM E1226a Standards to study the explosiveness of dispersed dusts. Its pyrotechnic composition consists of 1.2 g of zirconium (40% wt.), barium peroxide (30% wt.) and barium nitrate (30% wt.). The energy released during the combustion of that amount of composition is 5 kJ. The article investigates the influence of aging of the pyrotechnic composition in the igniter on its initiation parameters. In the study, igniters of different years from date of manufacture were used: Igniter 1, manufactured in 2021 (less than 1 year from date of manufacture), and Igniter 2 (more than 2 years from date of manufacture). The study was performed in the KV 150M2 explosion chamber with a volume of 365 L and the 20 L sphere chamber with a volume of 20 L. A standard sample of <i>Lycopodium clavatum</i> was used in the KV 150M2 explosion chamber. Magnesium and benzoic acid were used as the samples in the 20 L sphere explosion chamber. The experiment showed that the explosion pressure P<sub>max</sub> of the igniter with more than 2 years from date of manufacture decreased by up to 10%, while the value of the explosion constant K<sub>st</sub> decreased by up to 40%. The attained results proved that aging of igniters affects their explosion parameters and measurement accuracy. |
| first_indexed | 2024-03-10T05:44:39Z |
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| id | doaj.art-e7a45add2e254e829e103a15c4fdf052 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T05:44:39Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-e7a45add2e254e829e103a15c4fdf0522023-11-22T22:18:05ZengMDPI AGApplied Sciences2076-34172021-11-0111221072810.3390/app112210728Influence of the Pyrotechnic Igniter Composition Aging on Explosion Parameters of Dispersed DustsZuzana Szabová0Richard Kuracina1Martin Sahul2Miroslav Mynarz3Petr Lepík4László Kosár5Faculty of Materials Science and Technology in Trnava, Institute of Integrated Safety, Slovak University of Technology in Bratislava, Ul. Jána Bottu 2781/25, SK-917 24 Trnava, SlovakiaFaculty of Materials Science and Technology in Trnava, Institute of Integrated Safety, Slovak University of Technology in Bratislava, Ul. Jána Bottu 2781/25, SK-917 24 Trnava, SlovakiaFaculty of Materials Science and Technology in Trnava, Institute of Materials, Slovak University of Technology in Bratislava, Ul. Jána Bottu 2781/25, SK-917 24 Trnava, SlovakiaDepartment of Fire Protection, Faculty of Safety Engineering, Technical University of Ostrava, Lumírova 630/13, CZ-700 30 Ostrava, Czech RepublicDepartment of Occupational and Process Safety, Faculty of Safety Engineering, Technical University of Ostrava, Lumírova 630/13, CZ-700 30 Ostrava, Czech RepublicFaculty of Materials Science and Technology in Trnava, Institute of Integrated Safety, Slovak University of Technology in Bratislava, Ul. Jána Bottu 2781/25, SK-917 24 Trnava, SlovakiaA commercially available pyrotechnic igniter was used according to the EN 14034 and ASTM E1226a Standards to study the explosiveness of dispersed dusts. Its pyrotechnic composition consists of 1.2 g of zirconium (40% wt.), barium peroxide (30% wt.) and barium nitrate (30% wt.). The energy released during the combustion of that amount of composition is 5 kJ. The article investigates the influence of aging of the pyrotechnic composition in the igniter on its initiation parameters. In the study, igniters of different years from date of manufacture were used: Igniter 1, manufactured in 2021 (less than 1 year from date of manufacture), and Igniter 2 (more than 2 years from date of manufacture). The study was performed in the KV 150M2 explosion chamber with a volume of 365 L and the 20 L sphere chamber with a volume of 20 L. A standard sample of <i>Lycopodium clavatum</i> was used in the KV 150M2 explosion chamber. Magnesium and benzoic acid were used as the samples in the 20 L sphere explosion chamber. The experiment showed that the explosion pressure P<sub>max</sub> of the igniter with more than 2 years from date of manufacture decreased by up to 10%, while the value of the explosion constant K<sub>st</sub> decreased by up to 40%. The attained results proved that aging of igniters affects their explosion parameters and measurement accuracy.https://www.mdpi.com/2076-3417/11/22/10728dust explosionpyrotechnic igniterdispersed dustmagnesium powder<i>Lycopodium clavatum</i> powderbenzoic acid |
| spellingShingle | Zuzana Szabová Richard Kuracina Martin Sahul Miroslav Mynarz Petr Lepík László Kosár Influence of the Pyrotechnic Igniter Composition Aging on Explosion Parameters of Dispersed Dusts Applied Sciences dust explosion pyrotechnic igniter dispersed dust magnesium powder <i>Lycopodium clavatum</i> powder benzoic acid |
| title | Influence of the Pyrotechnic Igniter Composition Aging on Explosion Parameters of Dispersed Dusts |
| title_full | Influence of the Pyrotechnic Igniter Composition Aging on Explosion Parameters of Dispersed Dusts |
| title_fullStr | Influence of the Pyrotechnic Igniter Composition Aging on Explosion Parameters of Dispersed Dusts |
| title_full_unstemmed | Influence of the Pyrotechnic Igniter Composition Aging on Explosion Parameters of Dispersed Dusts |
| title_short | Influence of the Pyrotechnic Igniter Composition Aging on Explosion Parameters of Dispersed Dusts |
| title_sort | influence of the pyrotechnic igniter composition aging on explosion parameters of dispersed dusts |
| topic | dust explosion pyrotechnic igniter dispersed dust magnesium powder <i>Lycopodium clavatum</i> powder benzoic acid |
| url | https://www.mdpi.com/2076-3417/11/22/10728 |
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