Extrudable Gassy Pyrotechnic Time Delay Compositions

• Autorzy: Grobler J. M. , Cowgill A. W. , Focke W. W. , Labuschagne G.

Identyfikatory

DOI

10.22211/cejem/89866

• Języki publikacji: EN

Abstrakty

EN

A copolymer of chlorotrifluoroethylene and vinylidene fluoride was investigated to assess its viability as an oxidiser, for aluminium as the fuel, in an extrudable pyrotechnic composition for application in 3D printing. Experimental results and EKVI thermochemical modelling suggested that a fuel loading of 30 wt.% would provide the maximum energy output. DTA and TGA analysis were performed in order to ascertain processing limits. With the addition of a processing aid LFC-1® samples could be extruded successfully. Printing with the compositions had limited success. The high melt viscosity paired with the filament’s susceptibility to excessive preheating caused the print quality to be low. Delamination did not occur due to good fusion achieved during layer deposition. With minor compositional adjustments printing quality could be improvedy.

Słowa kluczowe

EN

polymer; burning rate; pyrotechnic; ignition time

• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2018
• Tom: Vol. 15, no. 2
• Strony: 299--314
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Grobler J. M.

• Institute of Applied Materials, University of Pretoria, Private Bag X20, Hatfield, 0028 Pretoria, South Africa

autor

Cowgill A. W.

• Institute of Applied Materials, University of Pretoria, Private Bag X20, Hatfield, 0028 Pretoria, South Africa

autor

Focke W. W.

• Institute of Applied Materials, University of Pretoria, Private Bag X20, Hatfield, 0028 Pretoria, South Africa

autor

Labuschagne G.

• Institute of Applied Materials, University of Pretoria, Private Bag X20, Hatfield, 0028 Pretoria, South Africa

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).