Title: Cure characteristics, mechanical properties and back face signature of ballistic rubber trauma pack

Authors: Mazliah Mazlan; Noraiham Mohamad; Jeefferie Abd Razak; Hairul Effendy Ab Maulod; Azmi Minal; Mohd Mef'at Hamdan

Addresses: Fakulti Kejuruteraan Pembuatan, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Fakulti Kejuruteraan Pembuatan, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Fakulti Kejuruteraan Pembuatan, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Fakulti Teknologi Kejuruteraan Mekanikal dan Pembuatan, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Science and Technology Research Institute for Defence (STRIDE), Bahagian Teknologi Persenjataan Kementerian Pertahanan, 48100 Batu Arang, Selangor, Malaysia ' Sindutch Cable Manufacturer Sdn. Bhd. Lot 38, Alor Gajah Industrial Estate, 78000 Alor Gajah, Melaka, Malaysia

Abstract: Curing characteristics, mechanical properties and back face signature (BFS) of natural rubber (NR) and chemically modified natural rubber (CNR) filled carbon black (CB) nanocomposites are reported. Five bullet shots for each samples at velocity of 367 ± 10 m s-1 and the indentation depths on oil based modelling clay backing known as Roma Plastilina No. 1 were measured. Results indicate that the minimum torque and maximum torque increase with increasing carbon black, whereas scorch time and cure time show decreasing trend. The value of tensile strength, elongation at break and modulus at 300% elongation (M300) improved with incorporation of 50 phr CB especially in the CNR filled composites. Further increment of CB reduces the enhancement of the mechanical properties. The CNR 50 recorded the lowest BFS of 4.55 mm indentation in depth. In conclusion, the CNR filled 50 phr carbon black is proven to be the most suitable for the trauma pack performance.

Keywords: natural rubber composites; carbon black; trauma pack; body armour; cure characteristics; mechanical properties; back face signature.

DOI: 10.1504/IJNT.2019.107364

International Journal of Nanotechnology, 2019 Vol.16 No.11/12, pp.715 - 729

Published online: 09 May 2020 *

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