The Thermal Behavior of Hybrid Fabric Reinforced Composites with Stratified Filled Epoxy Matrix

In this research, the thermal performance of the hybrid composites with modified epoxy matrix was investigated. The results were compared with those presented by the hybrid composites with homogeneous epoxy matrix. For understand the effects of the replacement of lower specific density glass fabric by higher specific density glass fabric, the thermal properties of the hybrid epoxy composites were determined by comparison to the thermal results of composites reinforced with lower specific density glass fabric with those of the hybrid epoxy materials reinforced with higher specific density glass fabric. Also, the effects on the specific heat and thermal expansion coefficient of the used fabric types in outer sheets of the composites were studied.

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Effect of Hybrid Fillers on the Thermal Properties of UHMWPE/Chitosan-ZnO Composites

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.754-755.71 ◽

2015 ◽

Vol 754-755 ◽

pp. 71-76

Author(s):

Mohd Firdaus Omar ◽

Lu Yew Wei ◽

Mohd Mustafa Al Bakri Abdullah ◽

Kamarudin Hussin

Keyword(s):

Thermal Properties ◽

Hybrid Composites ◽

Degree Of Crystallinity ◽

Reinforced Composites ◽

Compression Technique ◽

Melting Temperatures ◽

Fusion Enthalpy ◽

Reinforced Composite ◽

Hybrid Fillers ◽

Loss Level

In this work, UHMWPE reinforced composites containing hybrid zinc oxide (ZnO) and chitosan particles were prepared via the hot compression technique. The effect of ZnO contents (10, 20, 30 wt.%) and chitosan contents (1, 2, 3 wt.%) on the thermal properties of UHMWPE/ZnO and UHMWPE/Chitosan-ZnO reinforced composites were successfully investigated using DSC and TGA analysis, respectively. Based on DSC results, both UHMWPE/ZnO and hybrid composites did not record significant changes in the melting temperatures (Tm). The heat fusion enthalpy (Hm) and degree of crystallinity (Xc) of hybrid composites were found to be higher than UHMWPE/ZnO composites. As the TGA results shown, hybrid composites were also found to have higher thermal stability than UHMWPE/ZnO composites at 10 % and 50 % weight loss level. Overall, the UHMWPE/ZnO + 3 wt.% Chitosan hybrid reinforced composite recorded comparable mechanical properties and better thermal properties than neat UHMWPE.

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Halloysite nanotube reinforcement endows ameliorated fracture resistance of seawater aged basalt/epoxy composites

Journal of Composite Materials ◽

10.1177/0021998320902821 ◽

2020 ◽

Vol 54 (20) ◽

pp. 2761-2779 ◽

Cited By ~ 4

Author(s):

Hasan Ulus ◽

Halil Burak Kaybal ◽

Volkan Eskizeybek ◽

Ahmet Avcı

Keyword(s):

Shear Strength ◽

Hybrid Composites ◽

Tensile Tests ◽

Halloysite Nanotubes ◽

Interlaminar Shear Strength ◽

Epoxy Composites ◽

Halloysite Nanotube ◽

Fiber Reinforced Polymer Composites ◽

Interlaminar Shear ◽

Modified Epoxy

Seawater aging-dominated delamination failure is a critical design parameter for marine composites. Modification of matrix with nanosized reinforcements of fiber-reinforced polymer composites comes forward as an effective way to improve the delamination resistance of marine composites. In this study, we aimed to investigate experimentally the effect of halloysite nanotube nanoreinforcements on the fracture performance of artificial seawater aged basalt–epoxy composites. For this, we introduced various amounts of halloysite nanotubes into the epoxy and the halloysite nanotube–epoxy mixtures were used to impregnate to basalt fabrics via vacuum-assisted resin transfer molding, subsequently. Fracture performances of the halloysite nanotubes modified epoxy and basalt/epoxy composite laminated were evaluated separately. Single edge notched tensile tests were conducted on halloysite nanotube modified epoxy nanocomposites and the average stress intensity factor (KIC) was increased from 1.65 to 2.36 MPa.m1/2 (by 43%) with the incorporation of 2 wt % halloysite nanotubes. The interlaminar shear strength and Mode-I interlaminar fracture toughness (GIC) of basalt–epoxy hybrid composites were enhanced from 36.1 to 42.9 MPa and from 1.22 to 1.44 kJ/m2, respectively. Moreover, the hybrid composites exhibited improved seawater aging performance by almost 52% and 34% in interlaminar shear strength and GIC values compared to the neat basalt-epoxy composites after conditioning in seawater for six months, respectively. We proposed a model to represent fracture behavior of the seawater aged hybrid composite based on scanning electron microscopy and infrared spectroscopy analyses.

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Characterization on thermal properties of glass fiber and kevlar fiber with modified epoxy hybrid composites

Journal of Materials Research and Technology ◽

10.1016/j.jmrt.2020.01.061 ◽

2020 ◽

Vol 9 (3) ◽

pp. 3158-3167 ◽

Cited By ~ 3

Author(s):

Vivekanandhan Chinnasamy ◽

Sampath Pavayee Subramani ◽

Sathish Kumar Palaniappan ◽

Bhuvaneshwaran Mylsamy ◽

Karthik Aruchamy

Keyword(s):

Thermal Properties ◽

Glass Fiber ◽

Hybrid Composites ◽

Kevlar Fiber ◽

Modified Epoxy

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Development of Hybrid Cellulosic-Keratineous Fibers Base Epoxy Composites for Automobile Applications

Advanced Technologies & Materials ◽

10.24867/atm-2020-2-002 ◽

2020 ◽

Vol 45 (2) ◽

pp. 10-16

Author(s):

Isiaka Oluwol Oladele ◽

Opeyemi Emmanuel Barbarinde ◽

Okikiola Ganiu Agbabiaka ◽

Micheal Hope Adegun ◽

Adelani Samson Oluwagbenga ◽

...

Keyword(s):

Epoxy Matrix ◽

Moisture Absorption ◽

Hybrid Composites ◽

Epoxy Composites ◽

Moisture Resistance ◽

Wear Property ◽

Coir Fiber ◽

Mechanical Wear ◽

Thermal Insulating ◽

Feather Fiber

The development of hybrid cellulosic-keratinous fibers reinforced epoxy composites was investigated in this study. Hybrid composites were fabricated by mixing coir fiber (CF) and chicken feather fiber (CFF) with the epoxy matrix in a randomly dispersed approach. The mechanical properties such as tensile, flexural and hardness properties were determined. Also, wear property, thermal conductivity and moisture absorption potentials of the developed composites were studied while the surface morphology of the composite fracture surface was examined using scanning electron microscopy (SEM). The results revealed that all the selected properties were improved compared to the unreinforced epoxy matrix. Sample with 1% CF and 2% CFF gave the optimum results and the combination of good mechanical, wear, thermal insulating and moisture resistance properties. It was discovered that higher volume of CFF in synergy with low volume of CF was responsible for performance. The results revealed that the materials can be used in automobile due to the inclusion of light-weight bio-fibers that gave good insulating properties in epoxy composites in conjunction with good mechanical, wear and moisture resistance.

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Comparative analysis of the mechanical and thermal properties of polyester and epoxy natural fibre-reinforced hybrid composites

Journal of Composite Materials ◽

10.1177/0021998320976811 ◽

2020 ◽

pp. 002199832097681

Author(s):

DKK Cavalcanti ◽

MD Banea ◽

JSS Neto ◽

RAA Lima

Keyword(s):

Mechanical Properties ◽

Thermal Properties ◽

Comparative Analysis ◽

Hybrid Composites ◽

Natural Fibre ◽

Mechanical And Thermal Properties ◽

Reinforced Composites ◽

Thermoset Polymer ◽

Thermal Stability Of ◽

Fibre Reinforced Composites

In this work, a comparative analysis of the mechanical and thermal properties of polyester and epoxy single and hybrid natural fibre-reinforced composites was performed. Pure jute, jute + curauá and jute + sisal composites with two distinct thermoset polymer resins (an epoxy and a polyester) were produced. Tensile, flexural and impact tests were carried out, in accordance to ASTM standards, to investigate and compare the mechanical properties of the composites as a function of matrix and hybridization. In addition, a thermogravimetric analysis (TGA) was used to complete the comparative analysis of the thermal properties. Finally, a scanning electron microscopy (SEM) was used to examine the fracture surface of the tested specimens. It was found that the hybridization process improved the mechanical properties of the non-hybrid jute fibre based composites for both matrices used. The resin used as matrix plays an important role on the mechanical properties of the composites. The epoxy matrix based composites presented higher tensile strength, while the polyester based composites presented higher tensile and flexural stiffness as well as higher impact energy, when compared to the epoxy-based composite. TGA analysis showed that the thermal stability of epoxy-based composites was higher compared to the polyester-based composites.

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Thermal properties of autoclave and out-of-autoclave carbon fiber-epoxy composites with different fiber weave configurations

Journal of Composite Materials ◽

10.1177/0021998318774608 ◽

2018 ◽

Vol 52 (29) ◽

pp. 4075-4085 ◽

Cited By ~ 2

Author(s):

Ronald Joven ◽

Bob Minaie

Keyword(s):

Thermal Expansion ◽

Thermal Properties ◽

Carbon Fiber ◽

Specific Heat ◽

Volume Fraction ◽

Light Flash ◽

Epoxy Composites ◽

Fiber Volume ◽

Out Of Autoclave ◽

Carbon Fiber Epoxy

Thermal expansion, specific heat, diffusivity, and conductivity of carbon fiber-epoxy composites were studied using autoclave and out-of-autoclave prepregs with three different fabric weaves including unidirectional, eight-harness satin, and plain weave. For this purpose, light flash analysis was utilized where the implications of using anisotropic materials were studied. Results indicated that density, thermal expansion, conductivity, and diffusivity were strongly influenced by the fiber configuration of the sample. This phenomenon was attributed to the difference in fiber volume fraction induced by the different weaves of the fabric. Nevertheless, specific heat was similar for all the samples regardless of fabric type or resin formulation. Finally, thermal properties of tetrafluoroethylene release film were presented to analyze the tool-part heat transfer during manufacturing. This release film showed thermal conductivity three times lower than carbon fiber-epoxy samples indicating that the film could be an important contributor to thermal lag between tool and part.

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Morphology and Properties of Carbon Nanotubes Modified Epoxy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.284-286.918 ◽

2011 ◽

Vol 284-286 ◽

pp. 918-922

Author(s):

Xiao Lan Hu ◽

Wen Hao Wang ◽

Rong Lu Yu ◽

Gang Liu ◽

Teng Fei Lu

Keyword(s):

Carbon Nanotubes ◽

Thermal Properties ◽

Epoxy Resin ◽

Optical Microscopy ◽

Epoxy Matrix ◽

Amino Group ◽

Matrix Composites ◽

Elementary Analysis ◽

Nanotube Dispersion ◽

Modified Epoxy

Multi-walled carbon nanobutes (MWNTs) reinforced epoxy resin nanocomposites were fabricated by functionalizing the MWNTs with amino group. The functionlization of MWNTs was characterized by FTIR, elementary analysis, and TEM, and the MWNTs dispersion was characterized by optical microscopy and SEM. MWNTs functionalization with ethylene diamine improved the nanotube dispersion in the epoxy matrix composites. The dynamic mechanical thermal properties and thermal properties of MWNTs/epoxy nanocomposites are briefly discussed in terms of the MWNT loading and dispersion.

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