Sensing performance of electrically conductive fabrics and suspension lines for parachute systems

Abstract

The electronic sensing capabilities of parachute fabrics and suspension lines coated with conducting polymers, single-walled carbon nanotubes, and their composites are described. A new synthetic method is described to obtain a thin, strongly adhering coating of conducting polymers on commercial parachute fabrics and suspension lines using oligoanilines as an undercoating. The results indicate that both materials have a sensing ability; however, the coated suspension lines show superior performance compared to the coated parachute fabrics.

Comparison of Piezoresistive Monofilament Polymer Sensors

“…Previous research into conductive polymers and piezoresistive monofilament fibers has evolved from metallic thread woven with traditional textile materials [ 5 ] to the integration of carbon or graphene nano-particles [ 6 ] or carbon nanotubes [ 7 , 8 ] into polymer matrices [ 9 ], which can then be extruded into monofilament or pressed in sheet forms to create sensor coatings for substrate materials [ 9 ]. Silver-plated nylon 66 yarn [ 10 ] has also been used to design a wearable sensor for knee angle measurements.…”

Effects on the electro-mechanical properties of aniline-doped polyester fibric

“…Figure 5 and 6, show the plots of % elongation and work of rupture versus concentrations, which depicted that they increased with the increased in concentration. Applying a lubricant between the filaments in this way, when a load is applied at the two extremes of a fabric piece, the filaments tend to first straighten out, then untwist, then slide against each other as they attempt to resist stress-bearing This explains why there was an increase in average % elongation and work of rupture .The 3.5% concentration abnormal behaviour were observed because, it is the critical concentration above which the tensile strength started manifesting in the fabrics After the percolation threshold, tensile strength decreased with increase in the concentration (Favini et al,2012). …”

“…Polymerization was allowed for 3 hrs and then the fabric was removed SO₄ in a beaker (to remove loose polymer, unconsumed monomer and oxidant). The residue washed with deionized water Instron automatic testing machine with an IBM ace and printer according to the ASTM International D 5035-11 (2013), investigate the tensile characteristic such as; breaking force, percent elongation at break, work of rupture. Electrical Conductivity Measurement METEX auto/manual range dual display digital multimeter with interface (M-3860D) was used to measure the resistance between two probes separated by a known distance.…”

“…M 160 (2013),was used to stic such as; average breaking force, percent elongation at break, work of Electrical Conductivity Measurement METEX auto/manual range dual display digital 3860D) was used to measure the resistance between two probes are micrographs of control polyester niline on the fabric respectively. The Polyaniline deposited as a spongy was observed to have actually penetrated into the filaments, and of course, a larger percentage can be seen coating the nd also lodged between their interstices which functions as the electrically conductive layer (ECL)..…”

Influence of plasma treatment on CNT absorption of cotton fabric and its electrical conductivity and antibacterial activity

“…Therefore, it is important to modify the properties of textile. [1,2] Carbon nanotubes (CNTs) are new fascinating materials. Basically, they are fullerenerelated structures composed of graphite cylinders, which are closed at either ends with caps consisting of pentagonal rings.…”