Mechanical and dynamic mechanical properties of epoxy syntactic foams reinforced by short carbon fiber

Huang, Chi; Zhang, Huang; Qin, Yan; Ding, Jie; Lv, Xuesong

doi:10.1002/pc.23374

Cited by 36 publications

(20 citation statements)

References 37 publications

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“…researched the dynamic mechanical properties of nanoclay reinforced cyanate ester syntactic foams, incorporation of nanoclay improved storage modulus but diminished the T g of the syntactic foams due to the plasticizing effect of the organic moiety of the nanoclay. Huang et al . reported the effect of carbon fiber on epoxy syntactic foams, the DMA tests indicated that the addition of a small amount of CF could reinforce the matrix, thus improved the storage modulus.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of hollow glass microsphere with different coupling agents for potential applications in phenolic syntactic foams

Huang

Zhang

et al. 2016

J of Applied Polymer Sci

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Modified hollow glass microsphere (HGM) particles have been prepared by surface treatment. Coupling agents such as γ‐aminopropyltriethoxysilane (APTES), di(dioctylpyrophosphato) ethylene titanate (NDZ‐311), and glutaraldehyde (GA) were used as modifiers to improve the hydrophobicity of HGM. Compared with pristine HGM, the modified HGM, especially the particles coupled with APTES‐GA, show better properties on flexural strength, fracture toughness, and dynamic mechanical properties of phenolic syntactic foams. It is revealed that the coupling agent coating layer grafted onto the surface of HGM reduces the polarity of particles, avoiding agglomeration of HGM in phenolic matrix and exhibiting good interfacial interaction between HGM and phenolic matrix. The remarkable improvement of interfacial adhesion between APTES‐GA modified HGM and phenolic matrix is mainly due to the covalent linkage with phenolic resin while the physical entanglement of molecular chains dominates the linkage between other modified HGM and phenolic matrix. APTES‐GA treatment is a more appropriate surface modification method for inorganic particle reinforced phenolic matrix composites. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44415.

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Section: Introductionmentioning

confidence: 99%

Surface modification of hollow glass microsphere with different coupling agents for potential applications in phenolic syntactic foams

Huang

Zhang

et al. 2016

J of Applied Polymer Sci

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“…With the increase of HGM content, the intervals between microspheres reduce. The generated cracks will be blocked by the surrounding microspheres and could not propagate far away, which will concentrate most stress when subjected to load . Therefore, the step structures become scarce and even disappear as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Effect of high‐temperature treatment on the mechanical and thermal properties of phenolic syntactic foams

Huang

Zhang

Wang

2018

Polymer Engineering & Sci

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Phenolic syntactic foams were prepared with phenol–formaldehyde resin (PF), p‐toluene sulfonic acid, γ‐aminopropyltriethoxysilane (APTES), and glutaraldehyde (GA) cooperative treated hollow glass microsphere (HGM). Five types of syntactic foams were fabricated by filling different content of modified HGM. Compressive, flexural and thermal properties of the foams were investigated with respect to HGM content and treated temperature. Thermogravimetric analysis (TGA) studies presented a considerable reduction in the weight loss rate of system with the addition of HGM, the residual weight of syntactic foam with 50 vol% HGM at 800°C is 72.45%. Compression and bending tests results showed an increase on compressive and flexural properties for syntactic foams treated at high temperature with increasing HGM volume fraction. The thermal conductivity of all syntactic foams increased with temperature while decreased with introducing HGM, and thermal conduction through solid phase was the main heat transfer approach. The incorporation of HGM was beneficial to improving the thermal insulation property of syntactic foams especially at high temperatures. POLYM. ENG. SCI., 58:2200–2209, 2018. © 2018 Society of Plastics Engineers

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“…This is due to the fact that most epoxy foams were fabricated by dispersing hollow glass microsphere into the epoxy resin (e.g. syntactic epoxy foams) [44][45][46]. Excessive concentration of hollow glass microspheres will lead to a dramatic increase in the viscosity of the liquid epoxy resin, which leads to processing issues and in turn limited the porosity of the resulting syntactic epoxy foams [47].…”

Section: Compressive Properties Of the Mechanically Frothed (Scf-reinmentioning

confidence: 99%

Short carbon fibre-reinforced epoxy foams with isotropic cellular structure and anisotropic mechanical response produced from liquid foam templates

Song

Konstantellos

et al. 2019

Composites Science and Technology

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In this work, we show that mechanically anisotropic short carbon fibre (sCF)reinforced epoxy foams with an isotropic cellular structure can be fabricated from liquid foam templates. Short carbon fibres were mechanically frothed in an uncured liquid epoxy resin to produce an air-in-resin liquid foam template, followed by subsequent polymerisation to produce sCF-reinforced epoxy foam with an isotropic cellular structure. Fracture toughness test showed that the incorporation of chopped carbon fibres into epoxy foams led to a significant increase in critical stress intensity factor. It was also observed that neat epoxy foams failed catastrophically whilst sCF-reinforced epoxy foams failed in a progressive manner. Compression test further showed that the in-plane compressive moduli of mechanically frothed sCF-reinforced epoxy foams were significantly higher than their out-ofplane compressive moduli, signifying an anisotropic mechanical response. This anisotropic mechanical response stemmed from the radial flow generated by the high intensity mechanical frothing process, facilitating the preferential orientation of the added chopped carbon fibres in-plane whilst the entrained air bubbles during the mechanical frothing process were in equilibrium with the surrounding uncured liquid epoxy resin, resulting in an epoxy foam with an isotropic (spherical) cellular structure.

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Mechanical and dynamic mechanical properties of epoxy syntactic foams reinforced by short carbon fiber

Cited by 36 publications

References 37 publications

Surface modification of hollow glass microsphere with different coupling agents for potential applications in phenolic syntactic foams

Surface modification of hollow glass microsphere with different coupling agents for potential applications in phenolic syntactic foams

Effect of high‐temperature treatment on the mechanical and thermal properties of phenolic syntactic foams

Short carbon fibre-reinforced epoxy foams with isotropic cellular structure and anisotropic mechanical response produced from liquid foam templates

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