Flexural Properties of Syntactic foam Reinforced by Warp Knitted Spacer Fabric

Zhi, Chao; Long, Hairu

doi:10.1515/aut-2015-0028

Cited by 22 publications

(14 citation statements)

References 15 publications

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“…maintained 2 to 5 vol % nanoclay in epoxy syntactic foams, an increase in flexural strength was observed with the incorporation of nanoparticles in syntactic foams and flexural strength was observed to depend on the nanoclay volume fraction. In addition, Zhi and Long investigated the flexural behaviors of syntactic foam reinforced by warp knitted spacer fabric (SF‐WKSF), results indicated that the SF‐WKSF showed higher flexural strength compared to neat syntactic foam with almost no impact on the density of composites. Zhang and Ma treated hollow carbon microspheres with a coupling agent of glutaric dialdehyde to improve the fracture toughness of phenolic syntactic foams, it was found that better interfacial adhesion could be induced from coupling agent treated hollow carbon microspheres, hence resulted in increasing the fracture toughness and the maximum fracture toughness values occurred at 28.12 vol %.…”

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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“…7 Compressive Stress-strain curve comparison of calcium carbonate coated SFs and cementite coated SFs Table 2 shows the specific tensile strength and specific flexural strength against percentage volume concentration. Literature reports shows that the flexural strength, tensile strength and elastic modulus are enhanced by the filler [48,49]. In the case of the calcium carbonate shell coating, the specific tensile strength increases and the specific flexural strength decreases with increase in volume percentage (%) of the epoxy HMs.…”

Section: Flatwise Orientationmentioning

confidence: 99%

Failure Mechanism of Two-Phase Syntactic Foam Polymer Composites under Different Coating Conditions

Afolabi

Ariff

Mutalib³

2019

IJIE

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In this study, the impact of coated hollow microsphere (HMs) on syntactic foams (SFs) failure analysis is performed. The HMs was made from polystyrene beads and were coated with CaCO3 and cementite powder to produce the SFs by Vacuum Assisted Mould Fill Technique (VAMFT). The morphological analysis was performed using Scanning Electron Microscope (SEM) and the compressive test conducted using INSTRON 5982 machine model. From the results, the HMs failure mechanism showed the cementite surface coating enhanced the shellrigidity by 65%. The physical and compressive properties of the SFs increased with increase in % vol. fraction of the HMs. The SFs compressive modulus, flexural strength and tensile strength for the CaCO3 and cementite specimen are 470,44, 36 MPa and 582,48,41 MPa, respectively. The energy absorption characteristic of the SFs was enhanced by 14% and 25% for the CaCO3 and cementite HMs surface coating, respectively. But the optimal concentration for the SFs was 20% vol. weight for both HMs coating.

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“…Syntactic foams are defined as closed pore foams which are formed by embedding hollow microballoons into matrix [1]. The hollow microballoons are usually made up of glass, phenolic, carbon or metal, while the matrixes are usually thermosetting resins [2].…”

Section: Introductionmentioning

confidence: 99%

Warp-Knitted Spacer Fabric Reinforced Syntactic Foam: A Compression Modulus Meso-Mechanics Theoretical Model and Experimental Verification

Zhi

Sun

et al. 2020

Polymers

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In this study, a new type ternary composite, called warp-knitted spacer fabric reinforced syntactic foam (WKSF-SF), with the advantages of high mechanical properties and a lower density, was proposed. Then, a meso-mechanics theoretical model based on the Eshelby–Mori–Tanaka equivalent inclusion method, average stress method and composite hybrid theory was established to predict the compression modulus of WKSF-SF. In order to verify the validity of this model, compression modulus values of theoretical simulations were compared with the quasi-static compression experiment results. The results showed that the addition of suitable WKSF produces at least 15% improvement in the compressive modulus of WKSF-SF compared with neat syntactic foam (NSF). Meanwhile, the theoretical model can effectively simulate the values and variation tendency of the compression modulus for different WKSF-SF samples, and is especially suitable for the samples with smaller wall thickness or a moderate volume fraction of microballoons (the deviations is less than 5%). The study of the meso-mechanical properties of WKSF-SF will help to increase understanding of the compression properties of this new type composite deeply. It is expected that WKSF-SF can be used in aerospace, marine, transportation, construction, and other fields.

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Flexural Properties of Syntactic foam Reinforced by Warp Knitted Spacer Fabric

Cited by 22 publications

References 15 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

Failure Mechanism of Two-Phase Syntactic Foam Polymer Composites under Different Coating Conditions

Warp-Knitted Spacer Fabric Reinforced Syntactic Foam: A Compression Modulus Meso-Mechanics Theoretical Model and Experimental Verification

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