scholarly journals The effect of temperature and water immersion on the interlaminar shear fatigue of glass fiber epoxy composites using the I-beam method

2019 ◽  
Vol 181 ◽  
pp. 107703 ◽  
Author(s):  
Abedin I. Gagani ◽  
Anna B. Monsås ◽  
Andrey E. Krauklis ◽  
Andreas T. Echtermeyer
Keyword(s):  
Glass Fiber ◽  
Water Immersion ◽  
Epoxy Composites ◽  
Effect Of Temperature ◽  
Shear Fatigue ◽  
Beam Method ◽  
Interlaminar Shear

Effect of the addition of aliphatic diamine-functionalized carbon nanotubes on the interfacial adhesion of glass fiber/epoxy composites

2021 ◽  
pp. 004051752110519
Author(s):  
Yecheng Fan ◽  
Shen Ziyue ◽  
Shaohua Zeng ◽  
Pengpeng Chen ◽  
Ying Xu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Glass Fiber ◽  
Interfacial Adhesion ◽  
Control Sample ◽  
Epoxy Composites ◽  
Aliphatic Diamine ◽  
Uniform Dispersion ◽  
Fiber Matrix ◽  
Interlaminar Shear ◽  
Chain Lengths

To improve the interfacial adhesion of glass fiber (GF)/epoxy composites, the GF surface was treated by dispersing aliphatic diamine-functionalized multi-walled carbon nanotubes (MWCNTs). Carboxyl MWCNTs were first modified by aliphatic diamine with different alkyl chain lengths and then deposited on the surface of GF. The effect of aliphatic diamine chain lengths on the MWCNTs’ dispersion and interfacial properties of resultant composites was investigated in detail. The results showed that uniform dispersion of MWCNTs and strong fiber/matrix interfacial adhesion could be achieved, based on the grafting of 1,8-octanediamine onto MWCNTs. Compared with the control sample, the interlaminar shear, flexural, and tensile strengths of the treated composites increased by 41%, 29%, and 30%, respectively; the interlaminar fracture toughness and storage modulus in the glass region were significantly enhanced; and the glass transition temperature increased by more than 8°C. This work demonstrates that the carbon nanotubes functionalized by appropriate chain lengths of amine modifier can improve the fiber/matrix interfacial interactions and thus enhance the strength, toughness, and stiffness of fiber-reinforced composites.

scholarly journals Immersed interlaminar fatigue of glass fiber epoxy composites using the I-beam method

2019 ◽  
Vol 119 ◽  
pp. 302-310 ◽  
Author(s):  
Abedin I. Gagani ◽  
Emeric P.V. Mialon ◽  
Andreas T. Echtermeyer
Keyword(s):  
Glass Fiber ◽  
Epoxy Composites ◽  
Beam Method

Enhanced interfacial adhesion in glass fiber fabric/epoxy composites employing fiber surface treatment with aminosilane-functionalized graphene oxide

2020 ◽  
pp. 004051752096074
Author(s):  
Hongjie Gao ◽  
Yecheng Fan ◽  
Shaohua Zeng ◽  
Pengpeng Chen ◽  
Ying Xu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Glass Fiber ◽  
Fiber Surface ◽  
Epoxy Composites ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Uniform Dispersion ◽  
Interlaminar Shear ◽  
Fiber Surface Treatment ◽  
Fiber Fabric

An economical and effective method was developed to optimize the interface of glass fiber fabric (GFf)-reinforced epoxy composites (GFfE) by dispersing aminosilane-functionalized graphene oxide (GO) on the fiber surface. The effects of γ-aminopropyltrimethoxysilane (APS) or APS hydrolysis on the dispersion of GO and the interfacial properties of resultant composites were investigated in detail. The results indicated that the uniform dispersion of GO in composites and strong fiber/matrix adhesion could be achieved, based on grafting of APS hydrolysis onto GO. The interlaminar shear, flexural and tensile strengths of resultant composites were improved by 28%, 22% and 19%, respectively; the storage modulus and dynamic glass transition temperature (1 Hz) were significantly enhanced, compared with pure GFfE. In particular, the work of fracture received from interlaminar load–deflection curves increased by 97%, indicating the toughening effect of GO. This work demonstrates that it is possible to enhance the strength, stiffness and toughness of fiber-reinforced composites by incorporating GO into the interface between the fiber and the matrix.

Assessing glass-fiber modification developments by comparison of glass-fiber epoxy composites with reference materials: Some thoughts on relevance

2016 ◽  
Vol 231 (1-2) ◽  
pp. 49-54
Author(s):  
Marion Frey ◽  
Andreas J Brunner
Keyword(s):  
Glass Fiber ◽  
Epoxy Composites ◽  
Fiber Modification ◽  
Glass Fiber Reinforced ◽  
Percentage Difference ◽  
Fiber Treatment ◽  
Reinforcing Fibers ◽  
The Matrix ◽  
Fiber Matrix Interface ◽  
Interlaminar Shear

Any approach for designing composites with improved mechanical properties finally has to be assessed for respective improvements achieved. Glass-fiber reinforced epoxy matrix laminates consist of several constituents. Pretreatment of the constituents, the processes combining the matrix with the reinforcing fibers as well as the curing of the laminate may all have an effect on the resulting mechanical or fracture properties of the composites. In this contribution, the authors present selected cases from recent materials developments, dealing with glass-fiber epoxy laminates for which a thermal fiber treatment for desizing was compared with chemical solvent desizing. While desizing with a solvent and resizing with another type of sizing yielded tensile and interlaminar shear properties comparable to those of laminates prepared from as-received fibers, but lower for desized fibers, resizing after thermal desizing treatment exceeding +500 ℃ yielded lower properties for laminates from desized and resized fibers, but roughly in the same percentage difference as chemically desized and resized fiber laminates. This raises the question of how material or interface modifications in glass-fiber epoxy composites can best be compared for an assessment of the improvements achieved by the fiber treatments or the fiber–matrix interface modifications.

Improved interlaminar shear strength of glass fiber/epoxy composites by graphene oxide modified short glass fiber

2019 ◽  
Vol 6 (8) ◽  
pp. 085324 ◽  
Author(s):  
Chen-Yang Dang ◽  
Bo-Lin Tang ◽  
Xiao-Ling Zeng ◽  
Jiao Xu ◽  
Ming-Jia Feng ◽  
...  
Keyword(s):  
Shear Strength ◽  
Graphene Oxide ◽  
Glass Fiber ◽  
Interlaminar Shear Strength ◽  
Epoxy Composites ◽  
Short Glass Fiber ◽  
Interlaminar Shear ◽  
Short Glass
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