A study on the ballistic impact performance of neat and natural rubber latexcoated unidirectional (non-woven) high strength fabrics / Normala Hassim

This research explores the application of natural rubber (NR) latex as a thin coating matrix on unidirectional (UD) fabrics for ballistic impact applications. Pre-vulcanised NR lattices were used to coat ballistic fabrics mainly by the single dip method and half dip method. It was found that NR late...

Full description

Bibliographic Details
Main Author:	Hassim, Normala
Format:	Thesis
Language:	English
Published:	2015
Online Access:	http://ir.uitm.edu.my/id/eprint/17800/ http://ir.uitm.edu.my/id/eprint/17800/2/TP_NORMALA%20HASSIM%20AS%2015_5.pdf

id	uitm-17800
recordtype	eprints
spelling	uitm-178002018-09-27T02:26:42Z http://ir.uitm.edu.my/id/eprint/17800/ A study on the ballistic impact performance of neat and natural rubber latexcoated unidirectional (non-woven) high strength fabrics / Normala Hassim Hassim, Normala This research explores the application of natural rubber (NR) latex as a thin coating matrix on unidirectional (UD) fabrics for ballistic impact applications. Pre-vulcanised NR lattices were used to coat ballistic fabrics mainly by the single dip method and half dip method. It was found that NR latex changes the frictional aspects among the fibers attached with thin polyethylene film in the coated fabrics. The NR latex film was able to bind the polyethylene film, restrict mobility and share in resisting load applied to the fabric. In particular, an increase in friction was evident from the higher tensile, tearing and puncture resistance of the NR latex coated fabrics in comparison with neat fabrics. In the ballistic impact tests, utilizing several NR latex-coated fabrics in a fabric system increases the ballistic limit as high as 65% in comparisons with all-neat fabric system. The single dip coating technique gave higher ballistic limit value than the all-neat and other types of coating technique which was fired by Full Metal Jacketed Round Nose bullet. Somehow, the half dip coating method has the potential for ballistic applications because of the slight increase in the ballistic limit of a 12-layer fabric system. In subsequent tests, as high 23% in blunt trauma reduction was achieved using 4 NR latexcoated layers in the fabric system. The main deformation modes were small deflection or ballistic punch and peeling off of the NR latex film at the impact point. Neat fabrics failed mainly through broken fibers, fiber delamination, fiber pull out and fiber stretching. Calcium carbonate dispersion as a filler in the NR latex compounding also contributed in increasing the ballistic limit of the fabric systems. However, when compared with the unfilled NR latex-coated fabrics, the filler did not show to give any significant differences. As a conclusion, it can be said that the NR latex-coated fabrics were effective in absorbing the impact energy and reducing blunt trauma and has the potential to be used as blunt trauma panel and positioned at the rear of a body armour fabric system. 2015 Thesis NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/17800/2/TP_NORMALA%20HASSIM%20AS%2015_5.pdf Hassim, Normala (2015) A study on the ballistic impact performance of neat and natural rubber latexcoated unidirectional (non-woven) high strength fabrics / Normala Hassim. PhD thesis, Universiti Teknologi MARA.
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
description	This research explores the application of natural rubber (NR) latex as a thin coating matrix on unidirectional (UD) fabrics for ballistic impact applications. Pre-vulcanised NR lattices were used to coat ballistic fabrics mainly by the single dip method and half dip method. It was found that NR latex changes the frictional aspects among the fibers attached with thin polyethylene film in the coated fabrics. The NR latex film was able to bind the polyethylene film, restrict mobility and share in resisting load applied to the fabric. In particular, an increase in friction was evident from the higher tensile, tearing and puncture resistance of the NR latex coated fabrics in comparison with neat fabrics. In the ballistic impact tests, utilizing several NR latex-coated fabrics in a fabric system increases the ballistic limit as high as 65% in comparisons with all-neat fabric system. The single dip coating technique gave higher ballistic limit value than the all-neat and other types of coating technique which was fired by Full Metal Jacketed Round Nose bullet. Somehow, the half dip coating method has the potential for ballistic applications because of the slight increase in the ballistic limit of a 12-layer fabric system. In subsequent tests, as high 23% in blunt trauma reduction was achieved using 4 NR latexcoated layers in the fabric system. The main deformation modes were small deflection or ballistic punch and peeling off of the NR latex film at the impact point. Neat fabrics failed mainly through broken fibers, fiber delamination, fiber pull out and fiber stretching. Calcium carbonate dispersion as a filler in the NR latex compounding also contributed in increasing the ballistic limit of the fabric systems. However, when compared with the unfilled NR latex-coated fabrics, the filler did not show to give any significant differences. As a conclusion, it can be said that the NR latex-coated fabrics were effective in absorbing the impact energy and reducing blunt trauma and has the potential to be used as blunt trauma panel and positioned at the rear of a body armour fabric system.
format	Thesis
author	Hassim, Normala
spellingShingle	Hassim, Normala A study on the ballistic impact performance of neat and natural rubber latexcoated unidirectional (non-woven) high strength fabrics / Normala Hassim
author_facet	Hassim, Normala
author_sort	Hassim, Normala
title	A study on the ballistic impact performance of neat and natural rubber latexcoated unidirectional (non-woven) high strength fabrics / Normala Hassim
title_short	A study on the ballistic impact performance of neat and natural rubber latexcoated unidirectional (non-woven) high strength fabrics / Normala Hassim
title_full	A study on the ballistic impact performance of neat and natural rubber latexcoated unidirectional (non-woven) high strength fabrics / Normala Hassim
title_fullStr	A study on the ballistic impact performance of neat and natural rubber latexcoated unidirectional (non-woven) high strength fabrics / Normala Hassim
title_full_unstemmed	A study on the ballistic impact performance of neat and natural rubber latexcoated unidirectional (non-woven) high strength fabrics / Normala Hassim
title_sort	study on the ballistic impact performance of neat and natural rubber latexcoated unidirectional (non-woven) high strength fabrics / normala hassim
publishDate	2015
url	http://ir.uitm.edu.my/id/eprint/17800/ http://ir.uitm.edu.my/id/eprint/17800/2/TP_NORMALA%20HASSIM%20AS%2015_5.pdf
first_indexed	2023-09-18T22:59:06Z
last_indexed	2023-09-18T22:59:06Z
_version_	1777418052470571008

A study on the ballistic impact performance of neat and natural rubber latexcoated unidirectional (non-woven) high strength fabrics / Normala Hassim

Similar Items