Epoxy composites reinforced with multi-walled carbon nanotube/poly(ethylene glycol)methylether-coated aramid fiber

Abstract

<jats:title>Abstract</jats:title> <jats:p>A novel type of aramid fibers coated with poly(ethylene glycol) methyl ether (PEGME)-modified multi-walled carbon nanotubes (MWCNTs) was designed using electrophoresis. Owing to the good interaction of MWCNT-PEGME with the matrix, the coated fibers were well dispersed in epoxy resin. Thin films of epoxy/aramid-MWCNT-PEGME were prepared by placing the modified aramid fibers in molds, and the epoxy resin was infused into them. 4,4′-Diaminodiphenylmethane was dissolved in epoxy before the resin was poured over the aramid fibers coated with MWCNT-PEGME. According to fracture surface studies, the modified fibers were completely miscible with the epoxy resin and the filler was dispersed well in the space between the aramid fibers. The tensile strength of neat resin was increased from 658 to 1198 MPa in 40 wt.% of fiber-loaded epoxy/aramid-MWCNT-PEGME 40 composite. The maximum flexural strength was also found to be higher for epoxy/aramid-MWCNT-PEGME 40 (1593 MPa). The glass transition temperature (<jats:italic>T</jats:italic><jats:sub>g</jats:sub>) was studied using differential scanning calorimetry, in the range of 164–173°C. The tensile strength, modulus, flexural strength, and <jats:italic>T</jats:italic><jats:sub>g</jats:sub> of epoxy/aramid fiber composites with unmodified fibers were found to be lower than those of epoxy/aramid-MWCNT-PEGME composites.</jats:p>

Study the Effect of Adding MWCNTs on the Hardness, Impact Strength, and Structural Properties of Composite Materials based on Epoxy Polymer

“…The infrared absorption bands of the MWCNTs identify distinct molecular components and structures. The surface functional group of carbon nanotubes Fourier As a result, the mechanical properties of the composites are improved [18]. The FE-SEM images refer to another characterization procedure used to determine uniform dispersion.…”

“…Smaller arches suggest that the nanofiller-matrix interfacial connection was strong, allowing for efficient stress transfer from the matrix. As a result, the mechanical properties of the composites are improved[18]. The FE-SEM images refer to another characterization procedure used to determine uniform dispersion.…”

Effect of Chitin Nanocrystals Deacetylation on a Nature-Mimicking Interface in Carbon Fiber Composites

“…On the basis of the above facts, we consider the important role of the tough rigid interfaces using nature-mimicking nacre-like structures. So far, rigid-soft structures based on CNT modified with poly(ethylene glycol)methylether [37] and CNT/PEI combination [37] have been reported. However, unlike the comparable effect in single coating using GO or CNT [38] to enhance interfacial properties, the ability of tubular nanoelements to form complex structures and thus rigid tough interface is limited.…”

“…Recently, we have prepared CF coatings using nacre-like interlayers by EPD of PDA coated or some polymer-grafted GO combinations showing an excellent ability to enhance ILSS without loss of stiffness [37]. To control the composition of EPD coatings in the two-component system, grafting of aminated polymer to GO or borate-mediated interactions/bonding of hydroxyl-containing PVA and CMC was necessary.…”

On Tribological Behavior of Synthetic Fiber Reinforced Polymer Composites Modified With Fillers, A Review

“…Since the polymer matrix essentially needs to resist higher loads, it is normally reinforced with fibers and fillers. Polymer composites reinforced with synthetic fibers made up of glass [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], carbon [21][22][23][24][25][26][27][28][29][30], aramid [31][32][33][34] etc. are being extensively deployed in engineering applications because of their exceptional mechanical performance.…”