Synergy effects of multi-walled carbon nanotube and graphene nanoplate filled epoxy adhesive on the shear properties of unidirectional composite bonded joints

2020 ◽  
Vol 82 ◽  
pp. 106299 ◽  
Author(s):  
Qiong Rao ◽  
Haixin Huang ◽  
Zeyu Ouyang ◽  
Xiongqi Peng
Keyword(s):  
Carbon Nanotube ◽  
Epoxy Adhesive ◽  
Unidirectional Composite ◽  
Bonded Joints ◽  
Shear Properties ◽  
Multi Walled Carbon Nanotube ◽  
Synergy Effects

Thermal stability and adhesive strength of boron nitride nano platelets and carbon nano tube modified adhesives

2017 ◽  
Vol 52 (11) ◽  
pp. 1557-1565 ◽  
Author(s):  
Mürsel Ekrem ◽  
Ömer Sinan Şahin ◽  
Salim Eğemen Karabulut ◽  
Ahmet Avcı
Keyword(s):  
Thermal Stability ◽  
Shear Strength ◽  
Carbon Nanotube ◽  
Boron Nitride ◽  
Epoxy Adhesive ◽  
Diglycidyl Ether ◽  
Nano Particles ◽  
Scanning Calorimetry ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes

The effect of multi-walled carbon nanotube and/or boron nitride nano platelets usage on shear strength and thermal stability of epoxy based adhesives have been investigated. Commercially available diglycidyl ether of bisphenol A based epoxy was used as matrix and reinforced by using nanofillers. The resulting adhesive was tested for its shear-lap adhesion to aluminum alloy sheets (2024-T3). The nano particles modified epoxy adhesives were characterized by Fourier transform infrared, differential scanning calorimetry, and thermal gravity analyses analysis. These characterizations revealed that incorporation of nano particles can result in enhancement in chemical stability. Single lap strength joint testing was conducted in accordance with ASTM-D-1002-10 standard. Fracture morphologies and the effects of multi-walled carbon nanotubes and boron nitride nano platelets on epoxy adhesive were investigated after shear tests by means of scanning electron microscopy. Compared to neat epoxy, increases of 30% in shear strength and 57% in energy required to break joints have been obtained by multi-walled carbon nanotube/boron nitride nano platelet modification.

scholarly journals Photoluminescent Properties of Hydroxyapatite and Hydroxyapatite/Multi-Walled Carbon Nanotube Composites

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 832
Author(s):  
Edna X. Figueroa-Rosales ◽  
Javier Martínez-Juárez ◽  
Esmeralda García-Díaz ◽  
Daniel Hernández-Cruz ◽  
Sergio A. Sabinas-Hernández ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Hexagonal Phase ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Multi Walled Carbon Nanotube ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Co Precipitation ◽  
Functionalized Mwcnts

Hydroxyapatite (HAp) and hydroxyapatite/multi-walled carbon nanotube (MWCNT) composites were obtained by the co-precipitation method, followed by ultrasound-assisted and microwave radiation and thermal treatment at 250 °C. X-ray diffraction (XRD) confirmed the presence of a hexagonal phase in all the samples, while Fourier-transform infrared (FTIR) spectroscopy elucidated the interaction between HAp and MWCNTs. The photoluminescent technique revealed that HAp and the composite with non-functionalized MWCNTs present a blue luminescence, while the composite with functionalized MWCNTs, under UV-vis radiation shows an intense white emission. These findings allowed presentation of a proposal for the use of HAp and HAp with functionalized MWCNTs as potential materials for optoelectronic and medical applications.

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