Abstract:Basalt fiber was first treated in a mixture of formic acid (FA) and dichloromethane (DCM) to reduce its diameter down to one micrometer. Electrospinning process was utilized to produce treated basalt fiber (TBF)-reinforced nylon 6,6/epoxy (NY/EP) hybrid nanofibril composites. NY/EP polymers have been dissolved in 80:20 mixture of FA/DCM solvent to form a homogenous solution. TBFs with different weight ratios of 5, 10, 15, 20, and 25 wt% were added to NY/EP (ratio of 5:1). The morphology of the hybrid nanocompo… Show more
“…Only 9wt.% EGNS, on the other hand, demonstrated a decrease in Tg due to its substantial free volume (void) resulting from excess EGNS aggregates and cause the segmental motions in the polymer network to increase. 53,54 Figure 6.DSC thermogram of PS loaded with EGNS Composite nanofiber mats.…”
The present study is an attempt to fabricate composite nanofiber mats from polystyrene (PS) loaded with exfoliated graphite nanosheets (EGNS) by using electrospinning technique. EGNS with different weight ratios of 3, 6, and 9 wt.% were added to PS (20 wt.%). The fiber diameter and morphology of the composite nanofiber mats were investigated by scanning electron microscopy (SEM). Results revealed that as EGNS concentration was increased, the average diameter of EGNS/PS electrospun nanofibers decreased. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were used to investigate the thermal properties. The tensile strengths and Young’s modulus of the composites improve with the increasing EGNS concentrations compared to PS nanofiber, which indicates 84% and 88% augmentation, respectively at 6 wt.% of EGNS. Also, the addition of EGNS increased thermal stability of composite nanofiber mats.
“…Only 9wt.% EGNS, on the other hand, demonstrated a decrease in Tg due to its substantial free volume (void) resulting from excess EGNS aggregates and cause the segmental motions in the polymer network to increase. 53,54 Figure 6.DSC thermogram of PS loaded with EGNS Composite nanofiber mats.…”
The present study is an attempt to fabricate composite nanofiber mats from polystyrene (PS) loaded with exfoliated graphite nanosheets (EGNS) by using electrospinning technique. EGNS with different weight ratios of 3, 6, and 9 wt.% were added to PS (20 wt.%). The fiber diameter and morphology of the composite nanofiber mats were investigated by scanning electron microscopy (SEM). Results revealed that as EGNS concentration was increased, the average diameter of EGNS/PS electrospun nanofibers decreased. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were used to investigate the thermal properties. The tensile strengths and Young’s modulus of the composites improve with the increasing EGNS concentrations compared to PS nanofiber, which indicates 84% and 88% augmentation, respectively at 6 wt.% of EGNS. Also, the addition of EGNS increased thermal stability of composite nanofiber mats.
“…The main goal of this research is to develop controllable aspects in order to improve mechanical strength qualities. At three stages, the type of reinforcing materials, the weight percent of support content, and the injection moulding pressure are all monitored [15]. In light of the writing overview, the reaches for the cycle boundaries are set.…”
Section: Reinforcement Materials-sic and B 4 Cmentioning
confidence: 99%
“…Experimentation has been carried out in this regard to assess the temperature that occurs in the gear box of a moped when nylon 66 helical gear is used instead of metal gear [1]. Through the analysis in polymer composite gear with reinforcement of E-Glass GSM in various proportions, detailed analysis concluded that polymer composite gears have less wear rate related with conventional cast iron gears [15]. Composite was made using nylon 66 with various percentages of silica fume particulates through injection moulding machine to examine tensile, compression, flexural, impact, and heat distortion temperature (HDT).…”
The mechanical properties of different polymer matrix composites are discussed in this research study. These composites are multiphase materials in which reinforcing elements and a polymer matrix are suitably combined. The mechanical properties of 18 PMCs, including nylon 66 reinforced with 5, 15, and 25% wt% silicon carbide (SiC) and nylon 66 reinforced with 5, 15, and 25% wt% boron carbide (B4C), were evaluated using an injection moulding technique at three different injection pressures in this study. The optimization of process parameters like reinforcement material, reinforcement quantity, and injection pressure to maximize the tensile and impact strength of nylon 66 composites are the main focus of this study. It is observed that the specimens 25% SiC with an injection pressure of 90 MPa has optimised tensile strength, while the specimen 5% B4C with an injection pressure of 90 MPa has optimised impact strength.
“…Various fibers were also used to improve the mechanical and tribological properties of polymers for decades. In one recent research, formic acid and dichloromethanetreated basalt fibers enhanced the tensile strength, young's modulus, and thermal stability of nylon 66/epoxy composites (21). In another recent research, 13 wt% bamboo mesoparticles enhanced the tensile strength, modulus, and flexural strength of nylon 6 by a few percentages (22).…”
Mechanical and tribological properties of nylon 6 and nylon 6/h-BN composites were investigated in this paper. Tensile, hardness, and impact tests were carried out for mechanical properties, while wear tests on pin-on-disc were carried out for tribological properties identification. Abrasion resistance tests were carried out on the TABER apparatus to analyze the abrasive wear of materials. SEM, XRD, and TGA were used to characterize the materials and to understand the distinctive features of nylon 6 and nylon 6/h-BN composites. Experimental results show that the mechanical properties and tribological behavior of nylon 6 got enhanced by the h-BN fillers. Tensile strength and modulus of elasticity were enhanced by 15.2% and 64.5%, respectively, while hardness and impact strength were enhanced by 3.45% and 6%, respectively. COF and wear rate of composites decreased up to 4 wt% filler reinforcement due to smooth transfer film formation. Coefficient of friction (COF) and wear resistance were improved by 10–15% and 8–10%, respectively, at various testing conditions. h-BN reinforcement in the matrix resulted in more weight loss due to abrasion and it reduced the abrasion resistance of nylon 6 by 5.5 times. Thermal stability was slightly increased, and crystallinity was little affected by the h-BN fillers.
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