Environmental effects on the water absorption and mechanical properties of carbon fiber reinforced PPS and PEEK composites. Part II

1991 ◽  
Vol 31 (1) ◽  
pp. 34-39 ◽  
Author(s):  
Chen-Chi M. Ma ◽  
Shih-Wen Yur
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Water Absorption ◽  
Environmental Effects ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

scholarly journals Effects of Water Absorption on the Fiber–Matrix Interfacial Shear Strength of Carbon Nanotube-Grafted Carbon Fiber Reinforced Polyamide Resin

2019 ◽  
Vol 3 (1) ◽  
pp. 4 ◽  
Author(s):  
Kazuto Tanaka ◽  
Saya Okuda ◽  
Yoshitaka Hinoue ◽  
Tsutao Katayama
Keyword(s):  
Mechanical Properties ◽  
Shear Strength ◽  
Carbon Fiber ◽  
Water Absorption ◽  
Interfacial Shear Strength ◽  
Interfacial Shear ◽  
Fiber Reinforced ◽  
Pull Out ◽  
Fiber Matrix ◽  
Carbon Fiber Reinforced

Carbon fiber reinforced thermoplastics (CFRTPs) are expected to be used for the structural parts of automobiles and aircraft due to their mechanical properties, such as high specific stiffness, high specific strength, short molding times and high recyclability. The fiber/matrix interface of the composite plays an important role in transmitting stress from the matrix to the reinforcing fibers. It was reported that grafting of carbon nanotubes (CNTs) on the carbon fiber can improve the fiber/matrix interfacial property. We have reported that CNTs, which are directly grafted onto carbon fiber using Ni as the catalyst by the chemical vapor deposition (CVD) method, can improve the fiber/matrix interfacial shear strength (IFSS) of carbon fiber/polyamide 6 (PA6). For practical use of CFRTPs, it is important to clarify the effects of water absorption on the mechanical properties of the composite material. In this study, the effects of water absorption on the fiber–matrix interfacial shear strength (IFSS) of carbon fiber reinforced polyamide resin and CNT-grafted carbon fiber reinforced polyamide resin were clarified by the single fiber pull-out test for specimens preserved in air, then in water for 24 h and re-dried after water absorption. The IFSS of carbon fiber/PA6 was significantly decreased by water absorption. In contrast, CNT-grafted carbon fiber/PA6 showed smaller degradation of the IFSS by water absorption.

Effects of water pH and immersion time on water absorption behavior and mechanical properties of carbon fiber-reinforced bioplastic composites

2021 ◽  
pp. 2140049
Author(s):  
Ri-Ichi Murakami ◽  
Wahyu Solafide Sipahutar
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Water Absorption ◽  
Immersion Time ◽  
Moisture Absorption ◽  
Distilled Water ◽  
Fiber Reinforced ◽  
Water Ph ◽  
Normal Water ◽  
Carbon Fiber Reinforced

This research aims to study the effects of water pH and immersion time on water absorption and mechanical properties of carbon fiber-reinforced bioplastic composites. The composite samples were exposed to three different water conditions of normal water, distilled water and saltwater. The composites were immersed for a maximum of 40 days. After immersing for 40 days, the highest moisture absorption was found for the composites immersed in distilled water. Young’s modulus and tensile strength decreased with increasing the immersion time for the composite immersed in normal water. Moreover, the effect of the moisture absorption on the mechanical properties and the fracture surface was discussed by the glass transition temperature’s thermal behavior.

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