An Experimental Study on the Effect of Nanomaterials and Fibers on the Mechanical Properties of Polymer Composites

Abstract

This study aims to explore the tensile and impact properties (tensile strength, modulus of elasticity, and impact strength) of polypropylene (PP)-based nanocomposites reinforced with graphene nanosheets, nanoclay, and basalt fibers. The response surface methodology (RSM) with Box–Behnken design (BBD) was adopted as the experimental design. An internal mixer was used to prepare compounds consisting of 0, 0.75 and 1.5 wt% graphene nanosheets, 0, 10 and 20 wt% basalt fibers, and 0, 3 and 6 wt% nanoclay. The samples were prepared by a hot press machine for mechanical testing. The tensile tests were run to determine the tensile strength, and modulus of elasticity, and the Charpy impact tests were performed to assess the impact strength. It was found that the addition of basalt increased the tensile strength, modulus of elasticity, and impact strength by 32%, 64% and 18%, respectively. Also, the incorporation of the low-weight graphene nanosheets increased the tensile and impact strength by 15% and 20%, respectively, Adding graphene nanosheets generally improved the modulus of elasticity by 66%. Similarly, the addition of nanoclay improved the tensile strength by 17% and increased the modulus of elasticity by 59%, but further addition of it decreased the impact strength by 19%. The values obtained by this experiment for the mechanical property were roughly close to the data yielded from desirability optimization.

Sound Transmission Loss of a Honeycomb Sandwich Cylindrical Shell with Functionally Graded Porous Layers

“…The resulting vibrations can specifically create a strong noise in the surroundings, and are thus required to be fully investigated under such circumstances [13][14][15][16][17]. In this regard, forced and free vibrations of cylindrical shells and mechanical properties of polymer based nanocomposite have been thoroughly investigated in the past, as in the works of [18][19][20][21][22][23][24].…”

Separation of Diclofenac Sodium Using Polysulfone Membranes Incorporated with Manganese Nanoparticles

“…Increasing the NP concentration increases the viscosity of the casting polymer solution 42, which is clear through practical experience and by looking at the polymeric mixture while drawing on the fabric support. The tensile strength of the PSF membrane decreased slightly to 7.46 MPa after adding Mn 2 O 3 NP to the PSF solution, due to the agglomeration of NP 43 and the formation of stress points in the membrane matrix resulting from additive accumulation, where metallic NP can be considered as a cross‐linking agent which increases the membrane rigidity 44. As shown in Supporting Information Fig.…”

“…The tensile strength of the PSF membrane decreased slightly to 7.46 MPa after adding Mn 2 O 3 NP to the PSF solution, due to the agglomeration of NP [43] and the formation of stress points in the membrane matrix resulting from additive accumulation, where metallic NP can be considered as a cross-linking agent which increases the membrane rigidity [44]. As shown in Supporting Information Fig.…”

Size-dependent vibrational behavior of embedded spinning tubes under gravitational load in hygro-thermo-magnetic fields

“…For the viscoelastic-Pasternak foundation 61 in which c, k1, and k2 are damping, Winkler modulus, and shear modulus of the considered foundation, respectively.…”