X-ray Photoelectron Spectroscopic Analysis of Modified MWCNT and Dynamic Mechanical Properties of E-beam Cured Epoxy Resins with the MWCNT

Fiber plays an important role in determining the hardness, strength, and dynamic mechanical properties of composite material. In the present work, enhancement of viscoelastic behaviour of hybrid phenolic composites has been synergistically investigated. Five different phenolic composites, namely, C1, C2, C3, C4, and C5, were fabricated by varying the weight percentage of basalt and aramid fiber, namely, 25, 20, 15, 10, and 5% by compensating with barium sulphate (BaSO4) to keep the combined reinforcement concentration at 25 wt%. Hardness was measured to examine the resistance of composites to indentation. The hardness of phenolic composites increased from 72.2 to 85.2 with increase in basalt fiber loading. Composite C1 (25 wt% fiber) is 1.2 times harder than composite C5. Compression test was conducted to find out compressive strength of phenolic composites and compressive strength increased with increase in fiber content. Dynamic mechanical analysis (DMA) was carried out to assess the temperature dependence mechanical properties in terms of storage modulus (E′), loss modulus (E′′), and damping factor (tan δ). The results indicate great improvement of E′ values and decrease in damping behaviour of composite upon fiber addition. Further X-ray powder diffraction (XRD) and energy-dispersive X-ray (EDX) analysis were employed to characterize the friction composites.

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Influence of Aging and Wetting on Dynamic Mechanical Properties of Multi-Functional Epoxy Resins Filled with Aramid Short Fibers.

Journal of the Japan Society for Composite Materials ◽

10.6089/jscm.23.121 ◽

1997 ◽

Vol 23 (4) ◽

pp. 121-128 ◽

Cited By ~ 3

Author(s):

Muneaki YAMAGUCHI ◽

Yuko TANAKA ◽

Katsutoshi TANAKA

Keyword(s):

Mechanical Properties ◽

Epoxy Resins ◽

Dynamic Mechanical Properties ◽

Short Fibers ◽

Dynamic Mechanical

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Chain Structure and Dynamic Mechanical Property of the Vinylidenefluoride and Chlorotrifluoroethylene Copolymers

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1049-1050.123 ◽

2014 ◽

Vol 1049-1050 ◽

pp. 123-128

Author(s):

Guo Ping Zeng ◽

Chun Bo Yue ◽

Ya Qing Weng ◽

Ming Yu Wang ◽

Heng Feng Li

Keyword(s):

Mechanical Properties ◽

Random Distribution ◽

Dynamic Mechanical Properties ◽

Chain Structure ◽

Radical Copolymerization ◽

Dynamic Mechanical Property ◽

Diffraction Spectrum ◽

X Ray Diffraction ◽

X Ray ◽

Dynamic Mechanical

A series of vinylidenefluoride (VDF) and chlorotrifluoroethylene (CTFE) copolymers were prepared by radical copolymerization, the chain elements structures of the copolymers were gain with the elemental analysis, and the crystal regions with X-ray diffraction spectrum. The effect of chain elements structure on the crystallinity and dynamic mechanical properties was discussed with the DMA analysis. The result shows: the increasing of the CTFE content decreases the chain elements structure of VDF-VDF, the random distribution of VDF-CTFE structure has a great effect on the crystallization properties and the dynamic mechanical properties. The increasing of CTFE content improves the storage modulus and the damping of copolymers in the amorphous copolymers, while the distribution of chain segments’ length gets narrower.

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