Mechanical and visco-elastic analysis of viscose fiber based needle-punched nonwoven fabric mat reinforced polymer composites: Part I

Abstract

Composites were fabricated using viscose fiber-based needlepunched nonwoven fabric mat as a reinforcement material, with varying mass per unit area of fabric mat (VS200 gsm, VS400 gsm and VS600 gsm) and varying fabric mat weight percentage. The effect of varying mass per unit area of fabric mat and weight percentage loading of these different fabric mats were reported on mechanical, physical and visco-elastic properties of needlepunched nonwoven reinforced epoxy composites. The mechanical and physical characterization was analyzed experimentally, and thermo-mechanical stability studied via the dynamic mechanical analysis, to measure the storage modulus (E 0 ), loss modulus (E 00 ) and damping factor (tan d) of nonwoven fabric mat-reinforced composites over a temperature range of 20 C to 200 C at 1 Hz frequency. The storage modulus (E 0 ) diminish with increase in temperature, with a significant fall in the temperature range 50-80 C for all the composites. Loss modulus (E 00 ) shows the variation from 60 MPa to 150 MPa, whereas glass transient temperature (T g ) from the tan d peaks, varies from 70 C to 85 C. The comparative analysis shows that with the incorporation of nonwoven fabric mat weight percentage in composites, all mechanical and physical properties of composites improve significantly. These mechanical and physical properties are also improving with raise in mass per unit area of fabric mats from VS200 gsm to VS600 gsm.

Physico-mechanical and erosive wear analysis of polyester fibre-based nonwoven fabric-reinforced polymer composites

“…Conventional hand-lay-up technique fabricated three composites with varying proportion of resin and NPNF mat ( Table 1). For curing, hardener was added to the epoxy in the ratio of 10:1 by weight [24]. Composites were fabricated in the form of plaque through 24 h casting at room temperature.…”

“…They concluded that inclusion of NPNF resulted in improved thermo-mechanical and erosive wear properties. Moreover, nonwoven fibrous reinforcement was also reported to enhance the mechanical and viscoelastic properties of polymer composites by various researchers [8][9][10][21][22][23][24].…”

Investigation on mechanical and thermo‐mechanical properties of granite powder filled treated jute fiber reinforced epoxy composite

“…The simplest resin of this group is formed from reaction of two moles of epichlorohydrin with one mole of bisphenol A to produce the bisphenol A diglycidyl ether (commonly abbreviated to DGEBA) . Epoxies are known for their excellent adhesion, chemical, heat resistance, and good mechanical properties . The low temperature curing epoxide resin (LY 556) with corresponding Triethylenetetramine (TETA) hardener (HY 951) in the ratio of 10:1 by weight is used as a matrix material, supplied by Huntsman International (India) Pvt.…”

“…The objectives of dynamic mechanical analysis are to study the modification in the modulus and damping factor of the composite under cyclic load with increase in temperature . Experimental work depicts that incorporation of fibers in to polymer matrix increases the storage modulus ( E ′) of the composite but did not have any effect on the glass transition temperature ( T g ) . Rana et al analyzed the dynamic mechanical properties of polypropylene composite reinforced with jute fiber.…”

Mechanical properties for bio-based thermoset composites made from lactic acid, glycerol and viscose fibers

“…The reinforcement of thermoset resins with viscose fibers has not yet been reported extensively. Patnaik and Tejyan (2014) reinforced an epoxy resin with a needle punched fiber mat of viscose and they obtained relatively good mechanical properties. Mader et al (2012) reinforced an epoxy resin with unidirectional viscose fibers and they also obtained good mechanical properties close to that of GFR samples.…”