Fracture toughness and electrical conductivity of epoxy composites filled with carbon nanotubes and spherical particles

2013 ◽  
Vol 45 ◽  
pp. 95-101 ◽  
Author(s):  
Long-Cheng Tang ◽  
Yan-Jun Wan ◽  
Ke Peng ◽  
Yong-Bing Pei ◽  
Lian-Bin Wu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Fracture Toughness ◽  
Epoxy Composites ◽  
Spherical Particles

scholarly journals Assessing the Critical Multifunctionality Threshold for Optimal Electrical, Thermal, and Nanomechanical Properties of Carbon Nanotubes/Epoxy Nanocomposites for Aerospace Applications

Aerospace ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 7 ◽  
Author(s):  
Aikaterini-Flora Trompeta ◽  
Elias Koumoulos ◽  
Sotirios Stavropoulos ◽  
Theodoros Velmachos ◽  
Georgios Psarras ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Electrical Conductivity ◽  
Critical Concentration ◽  
Epoxy Composites ◽  
Micro Computed Tomography ◽  
Epoxy Nanocomposites ◽  
Aerospace Structures ◽  
Nanomechanical Properties

Epoxy composites are widely used in primary aerospace structures, where high impact damage properties are necessary. However, challenges appear when multiple functionalities, including electrical and thermal conductivity, are needed in parallel with increased mechanical properties. The current study aims at the assessment of a critical concentration of multiwalled carbon nanotubes (MWCNTs), incorporated in epoxy resin, which will indicate a threshold for optimal electrical, thermal and mechanical properties. For the evaluation of this optimal concentration, electrical conductivity, thermal stability and nanomechanical properties (Young modulus and nanohardness) have been assessed, for epoxy nanocomposites with 0 to 15 parts per hundred resin per weight (phr) MWCNTs. Percolation theory was applied to study the electrical conductivity for different contents of MWCNTs in the epoxy nanocomposite system. Thermogravimetric analysis was employed for the assessment of the epoxy composites’ thermal properties. Nanohardness and elastic modulus were measured, and the hardness versus modulus index was calculated. Emphasis was given to the dispersion of MWCNTs in the epoxy matrix, which was assessed by both microscopy techniques and X-ray micro–computed tomography. A correlation between the optimum dispersion and MWCNTs content in terms of electrical conductivity, thermal stability, and nanomechanical properties revealed a threshold concentration at 3 phr, allowing the manufacturing of aerospace structures with multifunctional properties.

scholarly journals Mechanical properties of aerospace epoxy composites reinforced with 2D nano-fillers: current status and road to industrialization

2021 ◽  
Author(s):  
Radhika Wazalwar ◽  
Megha Sahu ◽  
Ashok M. Raichur
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Fracture Toughness ◽  
High Performance ◽  
Aerospace Industry ◽  
Epoxy Composites ◽  
Current Status ◽  
High Performance Polymer

Epoxy composites find application in the aerospace industry. Although epoxy is a high-performance polymer, its fracture toughness is compromised due to its highly cross-linked nature. Nanomaterials such as carbon nanotubes...

scholarly journals Simultaneous enhancement of electrical conductivity and interlaminar fracture toughness of carbon fiber/epoxy composites using plasma-treated conductive thermoplastic film interleaves

RSC Advances ◽  
2018 ◽  
Vol 8 (47) ◽  
pp. 26910-26921 ◽  
Author(s):  
Wei Li ◽  
Dong Xiang ◽  
Lei Wang ◽  
Eileen Harkin-Jones ◽  
Chunxia Zhao ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Fracture Toughness ◽  
Carbon Fiber ◽  
Epoxy Composites ◽  
Interlaminar Fracture Toughness ◽  
Interlaminar Fracture ◽  
Carbon Fiber Epoxy

The electrical conductivity and interlaminar fracture toughness of carbon fiber/epoxy composites are simultaneously enhanced by plasma-treated MWCNT-doped PA12 film interleaves. This work is important for the LSP and EMI properties of CFRP.

Sign in / Sign up

Export Citation Format

Share Document