Composite of alumina and low density polyethylene, an alternative application in ballistic protection

Authors

  • Márcio J Oliveira Instituto Federal do Rio de Janeiro. Paracambi, RJ, Brasil; Exército Brasileiro, Instituto Militar de Engenharia. Rio de Janeiro, RJ, Brasil.
  • Alaelson Vieira Gomes Exército Brasileiro, Instituto Militar de Engenharia. Rio de Janeiro, RJ, Brasil.
  • André Rocha Pimenta Instituto Federal do Rio de Janeiro. Paracambi, RJ, Brasil.

Keywords:

Ballistic shielding, Ballistic impact, Alumina-LDPE composite

Abstract

This work presents a composite formed by alumina and low density polyethylene for use in ballistic protections, mainly bulletproof vests. The material was manufactured with 70% by weight of alumina and 30% by weight of low density polyethylene and subjected to ballistic tests and physical and thermal characterizations. After the ballistic test the fractured surface was characterized by scanning electron microscopy. The results indicated that a 15 mm composite board was able to satisfactorily withstand the ballistic impacts of .22 LR projectiles. The composite showed low water absorption, endured high temperatures and demonstrated good thermal stability. However, despite increasing the flame propagation time of polyethylene, the addition of alumina was not able to confer flame self-extinguishing properties. It is concluded that the composite has a good performance for ballistic protections of projectiles .22 LR.

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Published

2021-01-01

How to Cite

Oliveira, M. J., Vieira Gomes, A., & Pimenta, A. R. (2021). Composite of alumina and low density polyethylene, an alternative application in ballistic protection. Revista Militar De Ciência E Tecnologia, 38(1), 61–67. Retrieved from https://ebrevistas.eb.mil.br/index.php/CT/article/view/8637

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