Effect of γ-ray irradiation grafting on the carbon fibers and interfacial adhesion of epoxy composites

2007 ◽  
Vol 67 (15-16) ◽  
pp. 3261-3270 ◽  
Author(s):  
Zhiwei Xu ◽  
Yudong Huang ◽  
Chunhua Zhang ◽  
Li Liu ◽  
Yanhua Zhang ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Interfacial Adhesion ◽  
Epoxy Composites ◽  
Γ Ray

Surface and Composite Interface of Carbon Fiber Modified by Grafting of Diethanolamine

2009 ◽  
Vol 79-82 ◽  
pp. 497-500 ◽  
Author(s):  
Lei Chen ◽  
Zhi Wei Xu ◽  
Jia Lu Li ◽  
Xiao Qing Wu ◽  
Li Chen
Keyword(s):  
Shear Strength ◽  
Carbon Fiber ◽  
Functional Groups ◽  
Carbon Fibers ◽  
Irradiation Dose ◽  
Interlaminar Shear Strength ◽  
Epoxy Composites ◽  
Composite Interface ◽  
Γ Ray ◽  
Interlaminar Shear

The γ-ray co-irradiation method was employed to study the effect of diethanolamine modification on the surface of carbon fiber (CF) and the interfacial properties of CF/epoxy composites. Compared with the original carbon fiber, the surface of modified fibers became rougher. The amount of oxygen-containing functional groups was increased and the nitrogen element was detected after irradiation grafting. The interlaminar shear strength (ILSS) of composites reinforced by carbon fibers irradiated in diethanolamine solution was increased and then decreased as the irradiation dose increased. The ILSS of CF/epoxy composites was enhanced by 16.1% at 200kGy dose, compared with that of untreated one. The γ-ray irradiation grafting is expected to be a promising method for the industrialized modification of carbon fibers.

Study of Surface Characteristics of T700 Carbon Fibers and Interfacial Properties of their Reinforced Epoxy Composites

2013 ◽  
Vol 364 ◽  
pp. 706-710
Author(s):  
Ling Cong Li ◽  
Li Li Wang ◽  
Hua Hao ◽  
Hui Ling ◽  
Hong Jie Sun ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Energy ◽  
Carbon Fibers ◽  
Photoelectron Spectroscopy ◽  
Interfacial Adhesion ◽  
Dynamic Contact Angle ◽  
Surface Characteristics ◽  
Interfacial Properties ◽  
Epoxy Composites ◽  
Sem Images

The purpose of this paper is to comparatively study the surface characteristics of domestic and Toray T700 carbon fibers (T700-CFs) and the interfacial properties of their reinforced epoxy composites. The surface roughness and surface energy of the fibers were characterized by scanning electron microscope (SEM) and dynamic contact angle analysis (DCAA). The surface chemistry analysis of the fibers was carried out by using X-ray photoelectron spectroscopy (XPS). The interfacial properties of the T700-CF/epoxy composites were studied by testing the interlaminar shear strength (ILSS), observing SEM images of composites profiles and calculating the interfacial adhesion factors from dynamic mechanical thermal analysis (DMTA) data. The results show that domestic T700-CFs have a better interfacial adhesion to epoxy matrix due to its higher surface roughness, chemical activity and surface energy than Toray T700-CFs.

Interfacial properties and impact toughness of dendritic hexamethylenetetramine functionalized carbon fiber with varying chain lengths

RSC Advances ◽  
2014 ◽  
Vol 4 (74) ◽  
pp. 39156-39166 ◽  
Author(s):  
Lichun Ma ◽  
Linghui Meng ◽  
Yuwei Wang ◽  
Guangshun Wu ◽  
Dapeng Fan ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Impact Toughness ◽  
Chain Length ◽  
Carbon Fibers ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Interfacial Adhesion ◽  
Epoxy Composites ◽  
Chain Lengths

In order to understand the effects of chain length on the interfacial adhesion of PAN-based carbon fiber (CF)/epoxy composites, dendritic hexamethylenetetramine (HMTA) was functionalized on carbon fibers through quaternary ammonium salt reaction using alkyl dihalide of varying chain length [Cl(CH2)nCl, n = 2, 6 and 12].

Sulfone-functionalized poly(p-phenylene terephthalamide) copolymer fibers with improved interfacial adhesion to epoxy matrices

2021 ◽  
pp. 095400832110089
Author(s):  
Ting Li ◽  
Zengxiao Wang ◽  
Hao Zhang ◽  
Yutong Cao ◽  
Zuming Hu ◽  
...  
Keyword(s):  
Interfacial Adhesion ◽  
Interfacial Shear Strength ◽  
Aramid Fiber ◽  
Fiber Reinforced Composites ◽  
Epoxy Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Regular Arrangement ◽  
Epoxy Matrices ◽  
Polymerization Conditions

The poor interfacial adhesion of aramid fiber and matrix limits the application of the final composites. In this study, a series of the sulfone-functionalized poly( p-phenylene terephthalamide) (SPPTA) copolymers were satisfactorily synthesized and the effects of polymerization conditions (contents of the additional monomer and the cosolvent LiCl, molar concentration and ratio of the monomer, reaction temperature and time) on the molecular weight of the copolymer were discussed. The introduction of the sulfone group in aromatic polyamides not only increased the polarity of poly( p-phenylene terephthalamide) (PPTA) but destroyed the regular arrangement of the molecular chains, which greatly improved the surface free energy and the solubility of the polymers in organic solvents. The polymer maintained excellent thermal and interfacial properties. Compared with the PPTA fiber/epoxy composites, the interfacial shear strength (IFSS) of SPPTA fiber-reinforced epoxy composites reached 43.5 MPa, with a significantly enhancement of 20.8%, implying that the study provided an effective method to achieve highly interfacial adhesion of aramid fiber-reinforced composites.

scholarly journals Using redox active molecules to build multilayered architecture on carbon fibers and the effect on adhesion in epoxy composites

2021 ◽  
Vol 202 ◽  
pp. 108564
Author(s):  
Melissa K. Stanfield ◽  
Daniel J. Eyckens ◽  
Jérôme Médard ◽  
Philippe Decorse ◽  
Jean Pinson ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Epoxy Composites ◽  
Redox Active

Graphene oxide modified carbon fiber reinforced epoxy composites

2020 ◽  
Vol 40 (5) ◽  
pp. 415-420 ◽  
Author(s):  
Yasin Altin ◽  
Hazal Yilmaz ◽  
Omer Faruk Unsal ◽  
Ayse Celik Bedeloglu
Keyword(s):  
Graphene Oxide ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Spray Coating ◽  
Sem Analysis ◽  
Epoxy Composites ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Quick Method ◽  
Carbon Fiber Reinforced

AbstractThe interfacial interaction between the fiber and matrix is the most important factor which influences the performance of the carbon fiber-epoxy composites. In this study, the graphitic surface of the carbon fibers was modified with graphene oxide nanomaterials by using a spray coating technique which is an easy, cheap, and quick method. The carbon fiber-reinforced epoxy matrix composites were prepared by hand layup technique using neat carbon fibers and 0.5, 1 and 2% by weight graphene oxide (GO) modified carbon fibers. As a result of SEM analysis, it was observed that GO particles were homogeneously coated on the surface of the carbon fibers. Furthermore, Young's modulus increased from 35.14 to 43.40 GPa, tensile strength increased from 436 to 672 MPa, and the elongation at break was maintained around 2% even in only 2% GO addition.

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