Study on Tensile and Impact Performance for the MWCNTs/EP Composite

Yan, Fei; Fu, Jing Wen; Zhao, Dong Yu

doi:10.4028/www.scientific.net/AMR.936.390

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Home Advanced Materials Research Materials Science and Engineering TechnologyStudy on Tensile and Impact Performance for the...

Study on Tensile and Impact Performance for the MWCNTs/EP Composite

Abstract:

In this paper, multiwalled carbon nanotubes (MWCNTs)/epoxy resins (EP) composite was prepared by situ polymerization. MWCNTs/EP composites were prepared with different content of MWCNTs. The study of morphology and properties showed certain content of MWCNTs can well homogeneous dispersed in EP. Since of interface interaction between MWCNTs and EP, the glass transition temperature (T_g), strength and toughness of MWCNTs/EP composites were improved. Compared to the neat EP, composites prepared with 10 wt% MWCNTs showed 20 °C rising in T_g and nine orders of magnitude reduce in volume resistivity. The percolation thresholds between 4 wt% and 6 wt% are observed. Compared to the neat EP, composites prepared with 6 wt% MWCNTs showed with 83 % increase in tensile strength, 83 % increase in elastic modulus and 89 % increase in impact strength.

Info:

Periodical:

Advanced Materials Research (Volume 936)

Main Theme:

Materials Science and Engineering Technology

Edited by:

Zhang Mei

Pages:

390-393

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.936.390

Citation:

F. Yan et al., "Study on Tensile and Impact Performance for the MWCNTs/EP Composite", Advanced Materials Research, Vol. 936, pp. 390-393, 2014

Online since:

June 2014

Authors:

Fei Yan, Jing Wen Fu, Dong Yu Zhao *

Keywords:

Epoxy Resin (ER), Multi-Walled Carbon Nanotube (MWCNT), Nanocomposite

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$38.00

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References

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[4] Li C, Chou TW, Elastic moduli of multi-walled carbon nanotubes and the effect of van der Waals forces. Compos Sci Technol 2003; 63: 1517-24.

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DOI: https://doi.org/10.1021/nl0342489

Paper TitlePages

Mechanical Properties of Electron Beam Cured MMT/MWNTs/Epoxy Composites

Authors: Yan Yan Lu, Hua Li, Bo Kai Ng, Chen Xin Chen, Hong Mei Kang, Li Jiang, He Zhou Liu

Abstract: In this paper, electron beam radiation technology was applied to the preparation of MMT/MWNTs/epoxy nano-composites. The influences of the addition of Montmorillonite (MMT) and multi-walled carbon nanotubes (MWNTs) on the tensile properties of MMT/MWNTs/epoxy nano-composites were examined. The fracture surface of the composites was characterized by SEM as well. The results indicated that the composites have higher tensile modulus than that of the pristine epoxy resin.

458

Preparation and Mechanical Property of PLLA/Nano-SiO₂ Composite

Authors: Xin Fan

Abstract: Blends of Poly(L-lactide) (PLLA) and nano-SiO2 powder were prepared via solution mixing. Effect of nano-SiO2 particles on the crystallinity of PLLA in composite was investigated by X-ray diffraction, the result indicated that the incorporation of nano-SiO2 did not influence the crystallinity of PLLA in composite. The bending strength and modulus of the PLLA/nano-SiO2 composites with varying nano-SiO2 content were tested, showing that the bending strength reduced with the increase of nano-SiO2 content and the bending modulus increased. The SEM graphs of PLLA/nano-SiO2 composites were illustrated that the cross-section of composites varied from brittle to ductile fracture with the content of nano-SiO2 increasing up to 10 %, and changed from ductile to brittle fracture with further increasing of nano-SiO2 content.

367

Fatigue of Nanotube-Reinforced Carbon Fiber Epoxy Composites

Authors: Ying Cao, Li Pan

Abstract: In the present investigation, resin transfer molding has been used to produce high quality carbon fiber epoxy composites and nanotube-reinforced carbon fiber epoxy composites. To study the influence of carbon nanotubes (CNTs) on improving the mechanical properties and fatigue life, the tension-tension fatigue test has been carried out on those two kinds of material in the fiber direction. The damage mechanism in the fiber directions was analyzed by X-ray radiography and electron microscopy. The results show that CNTs pulled out, rapture and bridged cracks during the test, the results also show that CNTs possess an obvious potential on improving the property of carbon fiber epoxy composite, especially for properties that dominated by matrix.

753

Investigation of Fiber-Reinforced Modified Epoxy Resin Composites

Authors: A. Quddos, Mohammad Bilal Khan, R.N. Khan, M.K.K. Ghauri

Abstract: The impregnation of the fiber with a resin system, the polymeric matrix with the interface needs to be properly cured so that the dimensional stability of the matrix and the composite is ensured. A modified epoxy resin matrix was obtained with a reactive toughening agent and anhydride as a curing agent. The mechanical properties of the modified epoxy matrix and its fiber reinforced composites were investigated systematically. The polymeric matrix possessed many good properties, including high strength, high elongation at break, low viscosity, long pot life at room temperature, and good water resistance. The special attentions are given to the matrix due to its low out gassing, low water absorption and radiation resistance. In addition, the fiber-reinforced composites showed a high strength conversion ratio of the fiber and good fatigue resistance. The dynamic and static of the composite material were studied by thermo gravimetric analysis (TGA), Differential Scanning Calorimetry (DSC) and Scanning Electron Microscopy (SEM) with EDX. The influences of processing technique such as curing and proper mixing on the mechanical and interfacial properties were determined. The results demonstrated that the modified epoxy resin matrix is very suitable for applications in products fabricated with fiber-reinforced composites.

577

The Effects of Oil Palm Fruit Bunch (OPFB) Fiber and Coupling Agent Loadings on the Performance of Hybrid Composites

Authors: Anizah Kalam, M.N. Berhan, Hanafi Ismail

Abstract: Hybrid composites were prepared by incorporating oil palm fruit bunch (OPFB) fibre in the mixture of clay and polypropylene as secondary filler. OPFB and MAPP loadings were varied to investigate it effects on the performance. Tensile and impact tests were performed on the hybrid composites to evaluate their mechanical performances. Water absorption and thermal degradation tests were also conducted on the hybrid composites. Results indicated that the incorporation of OPFB in PP/PPnanoclay has decreased the thermal stability of hybrid composites. Tensile modulus of hybrid composites increased as the OPFB loading increases and further increased with the increasing of MAPP loading. Generally the tensile strength has decreased with the addition of OPFB, however slight increased was observed when the MAPP loading was increased. The impact strength has also increased with the increasing of OPFB for higher MAPP loading.

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