High strain rate compression of epoxy based nanocomposites

Tian, Yan; Zhang, Hui; Zhao, Jun; Li, Tao; Bie, B.X.; Luo, Sheng‐Nian; Zhong, Ziyi

doi:10.1016/j.compositesa.2016.06.008

Cited by 33 publications

(9 citation statements)

References 47 publications

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“…The compression details are shown and summarized in Figure 5 and Table 2 . As can be seen in Figure 5 a,b, the curves of the composite materials all have basically the same trend as pure PUE, and the curves generally go through three stages: initial linear elasticity, platform stress and a strain hardening region [ 34 ]. The peak stress in the initial linearly elastic region can be regarded as the compressive yield strength of a material, which is usually used to evaluate the compressive performance of a composite material [ 35 ].…”

Section: Resultsmentioning

confidence: 99%

Effects of Modified Al2O3-Decorated Ionic Liquid on the Mechanical Properties and Impact Resistance of a Polyurethane Elastomer

Gao

Zhang

et al. 2021

Materials

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In this work, a new composite material with excellent dynamic impact resistance and outstanding quasi-static mechanical properties was synthesized. The composite material is composed of a polyurethane elastomer and a novel nano-polymer. The nano-polymer was composed of silane coupling agent-modified alumina microspheres and functionalized ionic liquids by double bond polymerization. The universal testing machine and split Hopkinson pressure bar were used to characterize the compression behavior, strength and energy absorption of the composite materials under static and dynamic conditions. Additionally, the comprehensive mechanical properties of polyurethane elastomer with different nano-polymer loadings (0.5–2.5 wt.%) were studied. The results show that whether it was static compression or dynamic impact, the polyurethane elastomer with 1% nano-polymer had the best performance. For the composite material with the best properties, its compressive yield strength under the static compression was about 61.13% higher than that of the pure polyurethane elastomer, and its energy absorption of dynamic impacts was also increased by about 15.53%. Moreover, the shape memory effect was very good (shape recovery is approximately 95%), and the microscopic damage degree was relatively small. This shows that the composite material with the best properties can withstand high compression loads and high-speed impacts. The developed composite material is a promising one for materials science and engineering, especially for protection against compression and impacts.

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Section: Resultsmentioning

confidence: 99%

Effects of Modified Al2O3-Decorated Ionic Liquid on the Mechanical Properties and Impact Resistance of a Polyurethane Elastomer

Gao

Zhang

et al. 2021

Materials

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“…In total, by increasing the high strain rate from 1,300 to 1,900 s −1 , the maximum improvement due to the addition of GO is reduced from 9% to 3% for 0.1 wt% nanocomposite. Similar observations were reported by Tian et al . They investigated the effect of strain rates of 0.001–3,000 s −1 on nanosilical/epoxy nanocomposites and reported that the efficiency of the filler at higher strain rates was less than that at lower strain rates.…”

Section: Resultsmentioning

confidence: 99%

Mechanical characterization of graphene oxide reinforced epoxy at different strain rates

Majzoobi

Nejad

Sabet

2019

Polymer Engineering & Sci

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Strain rate has significant effect on mechanical behavior of the thermoset polymers. The rate sensitivity is more complicated for thermoset nanocomposites, which compose of two quite different types of materials. Nanofiller‐reinforced epoxy resin is widely used in the industry. In the present work, epoxy resin is reinforced by 0.05 to 0.7 wt% nanographene oxide (GO). The strain rate sensitivity of the fabricated nanocomposites is investigated through compressive test carried out at the strain rates of 0.001–1,900 s−1. The stress–strain curves of the nanocomposites indicated considerable difference between the low‐strain and high‐strain‐rate responses of the specimens. The results showed that the compressive strength of the nanocomposites was improved by more than 100% at high strain rates with respect to the low strain rates. Also, the addition of nano‐GO had influence on compressive strength enhancement but not as significant as the effect of strain rate. It was observed that the effect of GO was less important for higher strain rates. The experimental compressive strength and modulus of elasticity of the nanocomposites were casted in empirical relations for low and high strain rates for various filler weight percentages. Scanning electron microscopy was also used to examine the quality of GO dispersion. POLYM. ENG. SCI., 59:1636–1647 2019. © 2019 Society of Plastics Engineers

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“…Zhang et al investigated the strain-rate effect on compressive properties of a highly crosslinked tetrafunctional epoxy resin, the tetraglycidyl ether of methyl dianiline (TGMDA) cured with diamino- diphenyl sulfone (DDS) [ 15 ]. Then, 10 wt % nanosilica were added by using a commercial 40 wt % concentrate in DGEBA.…”

Section: Epoxy Resins Modified With Silica Nanoparticlesmentioning

confidence: 99%

Nanosilica-Toughened Epoxy Resins

Sprenger

2020

Polymers

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Surface-modified silica nanoparticles are available as concentrates in epoxy resins in industrial quantities for nearly 20 years. Meanwhile, they are used in many epoxy resin formulations for various applications like fiber-reinforced composites, adhesives or electronic components; even in space vehicles like satellites. Some of the drawbacks of “classic” epoxy toughening using elastomers as a second phase, like lower modulus or a loss in strength can be compensated by using nanosilica together with such tougheners. Apparently, there exists a synergy as toughness and fatigue performance are increased significantly. This work intends to provide an overview regarding the possibilities of nanotoughening with silica, the industrial applications of such epoxy resin formulations and the most recent research results.

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High strain rate compression of epoxy based nanocomposites

Cited by 33 publications

References 47 publications

Effects of Modified Al2O3-Decorated Ionic Liquid on the Mechanical Properties and Impact Resistance of a Polyurethane Elastomer

Effects of Modified Al2O3-Decorated Ionic Liquid on the Mechanical Properties and Impact Resistance of a Polyurethane Elastomer

Mechanical characterization of graphene oxide reinforced epoxy at different strain rates

Nanosilica-Toughened Epoxy Resins

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