Qualitative separation of the effect of voids on the static mechanical properties of hygrothermally conditioned carbon/epoxy composites

Zhang, A. Y.; Li, D. H.; Zhang, D. X.; Lu, Haibao; Xiao, Hai Ying; Jia, Jiu Si

doi:10.3144/expresspolymlett.2011.69

Cited by 33 publications

(17 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the literature it is reported that the ILSS is particularly sensitive to void content . As mentioned in Bulk Resin Samples section, the difference in void content among the tested system is believed to be low, and in particular below 1%.…”

Section: Discussion Of Resultsmentioning

confidence: 90%

Interlaminar fracture toughness behavior of electron-beam cured carbon-fiber reinforced epoxy-resin composites

et al. 2013

View full text Add to dashboard Cite

The work describes the preparation and physicalmechanical characterization of unidirectional CFRP panels manufactured by an electron beam curing technique. Delamination fracture toughness in Mode I and II is investigated in order to evaluate the influence of fiber-matrix adhesion strength, matrix toughness and matrix crosslinking density as determined by the radiation curing process. A matrix system comprising a DGEBA epoxy monomer and an initiator of cationic polymerization have been used, with one batch of resin mixed with a PES monomer in order to enhance matrix toughness. Curing was achieved with a pulsed 10 MeV Electron Beam accelerator. Thermally cured composite systems have also been manufactured and tested for comparison. Results from double cantilever beam and end notched flexure delamination tests have been analyzed and correlated with results from short beam shear, dynamic mechanical thermal analysis tests and SEM micrographs of delaminated surfaces. POLYM. COMPOS., 35:1529-1542, 2014. V C 2013 Society of Plastics Engineers Recently some joined network research programmes and R&D projects within the aerospace industry have demonstrated the possibility to adapt radiation facilities to manufacture industrial grade large and complex FRP FIG. 12. SEM micrographs of delaminated surfaces from the ENF sample R1tpc: (a) overview of Mode II-Mode I pre-crack zone; (b) close-up of Mode II delaminated surface.

show abstract

Section: Discussion Of Resultsmentioning

confidence: 90%

Interlaminar fracture toughness behavior of electron-beam cured carbon-fiber reinforced epoxy-resin composites

et al. 2013

View full text Add to dashboard Cite

show abstract

“…At higher loading, CNTs get closer to each other in the matrix; hence their strong attractive forces might have led them to form agglomerates. These agglomerates can act as stress risers and also increase the free volume by creating voids in the matrix . This phenomenon may contribute to premature matrix failure during loading which results in lower mechanical properties.…”

Section: Resultsmentioning

confidence: 99%

Improved thermomechanical properties of carbon fiber reinforced epoxy composite using amino functionalized XDCNT

Hossain

Chowdhury

Salam

et al. 2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

Carbon fiber-reinforced epoxy composites (CFEC) are fabricated infusing up to 0.40 wt % amino-functionalized XD-grade carbon nanotubes (XDCNT) using the compression molding process. Interlaminar shear strength (ILSS) and thermomechanical properties of these composites are evaluated through short beam shear and dynamic-mechanical thermal analysis tests. XDCNTs are infused into Epon 862 resin using a mechanical stirrer followed by sonication. After the sonication, the mixture was placed in a three roll milling processor for three successive cycles at 140 rpm for uniform dispersion of CNTs. Epikure W curing agent was then added to the resin using a high-speed mechanical stirrer. Finally, the fiber was reinforced with the modified resin using the compressive mold. ILSS was observed to increase by 22% at 0.3 wt % XDCNT loading. Thermal properties, including storage modulus, glass transition temperature, and crosslink density demonstrated linear enhancement up to the 0.3 wt % XDCNT loading. Scanning electron microscopy revealed better interfacial bonding in the CNT-loaded CFEC.

show abstract

“…8). The other possibility for low tensile strength at high concentration can be the agglomeration of Si-CL particles, which reduces elasticity of polymeric chains in CA [60]. The thickness of the membrane also affects membrane characteristics and mechanical strength; therefore, thickness comparisons of pure and hybrid membranes are combined in Table 2.…”

Section: Tensile Strength Measurementmentioning

confidence: 99%

Comparison of silica and novel functionalized silica-based cellulose acetate hybrid membranes in gas permeation study

et al. 2015

View full text Add to dashboard Cite

Cellulose acetate (CA) is a widely applied glassy polymer in the preparation of gas separation membranes. In the present study, hybrid membranes were prepared by incorporating silica (Si) and silica functionalized with ptetranitrocalix[4]arene (Si-CL) into the CA matrix, and their gas permeation abilities were explored with regard to CO 2 , N 2 and CH 4 gases. The diffusion-induced phase separation (DIPS) method was adopted to make pure CA, CA/Si, and CA/Si-CL hybrid membranes. The concentration of Si-CL was varied as 10 wt%, 20 wt% and 30 wt% in the hybrid membranes. The analytical techniques employed for membrane characterization were Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM), and X ray-diffraction (XRD) analysis. The proper interaction of Si and Si-CL was confirmed by FTIR analysis. However, the homogenous surface textures of CA/Si, and CA/Si-CL hybrid membranes were evaluated through SEM. Furthermore, AFM analysis was performed to examine the surface roughness of these hybrid membranes. The changes in the crystallinity of CA were also examined by XRD analysis after adding Si and Si-CL. Moreover, the tensile strength of the CA/Si hybrid membrane was found to be better than that of CA/Si-CL hybrid membranes. CO 2 , CH 4 and N 2 gases were used for gas permeation experiments at 400 kPa. Among CO 2 and CH 4 gases, the permeability of N 2 was high in CA/Si-CL hybrid membranes, and N 2 /CO 2 selectivity of these membranes was 22.6.

show abstract

Qualitative separation of the effect of voids on the static mechanical properties of hygrothermally conditioned carbon/epoxy composites

Cited by 33 publications

References 17 publications

Interlaminar fracture toughness behavior of electron-beam cured carbon-fiber reinforced epoxy-resin composites

Interlaminar fracture toughness behavior of electron-beam cured carbon-fiber reinforced epoxy-resin composites

Improved thermomechanical properties of carbon fiber reinforced epoxy composite using amino functionalized XDCNT

Comparison of silica and novel functionalized silica-based cellulose acetate hybrid membranes in gas permeation study

Contact Info

Product

Resources

About