Mode I and Mode II delamination resistance and mechanical properties of woven glass/epoxy–PU IPN composites

Sampath, P. S.; Murugesan, V.; Sarojadevi, M.; Thanigaiyarasu, G.

doi:10.1002/pc.20371

Cited by 11 publications

(6 citation statements)

References 22 publications

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“…Sylgard‐184kit consists of two parts: one is a dimethyl vinyl‐terminated silicone base polymer (Sylgard‐A), and the other one is the cross‐linker with a platinum‐based catalyst (Sylgard‐B). Sylgard‐A, Sylgard‐B, and n‐heptane solvent were mixed in a ratio of 10:1:10 to form a Sylgard‐184 kit solution . The conductive Ag ink was used as a 10 wt% water solution.…”

Section: Methodsmentioning

confidence: 99%

“…In the interpenetrating polymer network (IPN), two different polymers are mixed with one another to enhance the continuity of components at a molecular scale due to their small entropy of mixing . Thus, the IPN structure provides superior mechanical compliance such as fracture toughness, stretchability, flexibility, compressive, and tribological properties as compared to the single network counterparts . In addition, the IPN structure is highly capable of maintaining the shape and size via dissipating mechanical energy from external sources.…”

Section: Introductionmentioning

confidence: 99%

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Highly stretchable wrinkled electrode based on silver ink‐elastomer nanocomposite with excellent fatigue resistance

et al. 2020

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Flexible and stretchable electrodes have attracted immense attention because of their various electronic applications on the wearable sensing electronics, but challenges regarding robust and sustainable electrical performance under static and dynamic mechanical stresses still need to be overcome. Herein, with a simple effective strategy, a highly serviceable and flexible elastomeric electrode fabricated by utilizing an interpenetrating network between acrylic rubber (AR) and silicone rubber (SR), and silver (Ag) ink to increase electrical conductivity, is introduced. Oxygen (O2) plasma and sodium dodecyl sulfate (SDS) treatment on wrinkle substrate surface lead to robust adhesion of Ag ink layer, results in high electrical conductivity. Wrinkle morphology can help to stably maintain the continuous conductive Ag network during static and dynamic deformation. This stretchable electrode possessing properties such as robust and stable electrical conductivity of ~103 S/cm under 150% static tensile deformations and good sustainability after 1000 cycles of dynamic tensile deformations is a promising candidate for stretchable wearable electronics.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly stretchable wrinkled electrode based on silver ink‐elastomer nanocomposite with excellent fatigue resistance

et al. 2020

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“…Heating ramp ( C/min) calculation of Equation (11). Across small time intervals and the activation energy is determined as a value that minimizes this function 127,128 :…”

Section: Samplementioning

confidence: 99%

“…[1][2][3][4][5] Interpenetrating polymer networks (IPNs), among the different types of polymeric mixtures, are a specific group of hybrid polymer materials comprising two thermosetting resins in which the polymer networks are physically and permanently linked together via chain entanglements, as well as chemically a few bond formations between two resins. [6][7][8][9][10][11][12] Thermosetting resins similar to vinyl ester, polyester, and especially epoxy are generally applied as coating binders. 13,14 The epoxy-vinyl ester blend can form IPNs consisting of two cured resins, the interlaced networks forming one homogeneous system on a molecular scale.…”

Section: Introductionmentioning

confidence: 99%

The synergistic impacts of hybrid nanofillers of graphene nanoplatelets/carbon nanotubes on curing behavior of an epoxy‐vinyl ester interpenetrating polymer network nanocomposite coating

Molaei,

Jannesari

2023

Polymer Composites

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This study investigated the synergistic effects of hybrid graphene nanoplatelet (GnP)/multi walled carbon nanotube (MWCNT) nanofillers at various loadings on the kinetics of curing of the epoxy (EP)/vinyl ester (VE) interpenetrating polymer network (IPN) system, with a mass ratio of 1:1. Fourier transform infrared spectroscopy (FTIR), dynamic mechanical thermal analyzer (DMTA) and differential scanning calorimetry (DSC) were used to monitor the interpenetration process of EP and VE and likely interactions between the components of the different resin systems in IPN. The curing behavior of all prepared samples under non‐isothermal conditions was studied using DSC at four heating rates. Two different isoconversional approaches were applied to evaluate the reaction kinetics, that is, the Friedman and the advanced Vyazovkin methods. The obtained activation energy curves for all samples revealed a complex curing behavior involving three stages; early IPN stage, IPN growth stage, and late IPN stage. Then, the activation energy values for each reaction step were determined based on the Friedman method. The presence of GnP/MWCNT nanoparticles showed no catalytic effect on the reaction of VE with methyl ethyl ketone peroxide (MEKP). In contrast, incorporating GnP/MWCNT nanoparticles significantly decreases the activation energy values of the reaction of ring opening of epoxides with methyl tetrahydrophthalic anhydride (MTHPA) 1‐methyl imidazole (‐Mi) and the reaction of esterification of the hydroxyl groups of VE with MTHPA.Highlights Model‐free methods used to curing study of epoxy‐vinyl ester IPN nanocomposites FTIR, DSC and DMTA used for evaluation IPN formation of EP/VE It showed that the improvement of dispersion and compatibility by using of GnP/MWCNT hybrid Frideman and Vyazovkin methods used to calculate Ea of nanocomposites DSC thermograms were deconvoluted into three individual peaks.

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“…Specimens with P‐SWCNT showed stable crack growth and improved the interlaminar mode I fracture toughness a little more than F‐SWCNT specimens. Sampath et al studied the effect of polyurethane on the mechanical properties, and Mode I and Mode II interlaminar fracture toughness of glass/epoxy composites. They added polyurethane to the matrix of glass/epoxy composite.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the effects of carbon nanotubes on mode I interlaminar fracture toughness of laminated composites

Kermansaravi

Pol

2016

Polymer Composites

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In this research, a small quantity of multiwalled carbon nanotubes was used in order to enhance the IFT and the tensile properties of glass fiber/epoxy composite laminates. For this purpose, the nanocomposite samples, which have 18 fiber‐glass plain‐weave layers were manufactured. The epoxy resin system is made of Epon828 resin with Epikure F205 as the hardener. The MWCNTs modified with hydroxide (‐COOH) is also dispersed into the epoxy system as a reinforcement in a 0, 0.1, 0.5, and 1 wt%. In addition, the tensile nanoresin and hybrid nanocomposite specimens were produced. In the tensile test of nanomatrixes, the maximum change in Young's modulus, ultimate strength, and fracture toughness of the samples is obtained in the 0.5 wt% sample, with a 31.2, 21.4, and 16.66% increase with respect to neat sample, respectively. Moreover, the results of the tensile test of hybrid nanocomposites show that the maximum change in fracture toughness, ultimate strength, and fracture strain of the samples is in the 0.5 wt% sample, with a 12.6, 9.8, and 12.6% increase with respect to the neat sample, respectively. The result of the double cantilever beam test of hybrid nanocomposites indicates that the maximum change in value of the force and value of the energy of crack propagation in mode I interlaminar fracture is in 0.5 wt% sample, with a 24.4 and 24.15% increase respect to the neat sample, respectively. Totally, it can be included that the 0.5 wt% is the best value out of 3% of MWCNTs to be added. POLYM. COMPOS., 39:E797–E806, 2018. © 2016 Society of Plastics Engineers

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Mode I and Mode II delamination resistance and mechanical properties of woven glass/epoxy–PU IPN composites

Cited by 11 publications

References 22 publications

Highly stretchable wrinkled electrode based on silver ink‐elastomer nanocomposite with excellent fatigue resistance

Highly stretchable wrinkled electrode based on silver ink‐elastomer nanocomposite with excellent fatigue resistance

The synergistic impacts of hybrid nanofillers of graphene nanoplatelets/carbon nanotubes on curing behavior of an epoxy‐vinyl ester interpenetrating polymer network nanocomposite coating

Experimental investigation on the effects of carbon nanotubes on mode I interlaminar fracture toughness of laminated composites

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