scholarly journals Effects of Hydrothermal Aging of Carbon Fiber Reinforced Polycarbonate Composites on Mechanical Performance and Sand Erosion Resistance

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2453
Author(s):  
Mei Fang ◽  
Na Zhang ◽  
Ming Huang ◽  
Bo Lu ◽  
Khalid Lamnawar ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Erosion Resistance ◽  
Mechanical Performance ◽  
Sampling Period ◽  
Hot Water ◽  
Fiber Reinforced ◽  
Hydrothermal Aging ◽  
Humid Environment ◽  
Sand Erosion ◽  
Carbon Fiber Reinforced

Carbon fiber reinforced polycarbonate (CF/PC) composites have attracted attention for their excellent performances. However, their performances are greatly affected by environmental factors. In this work, the composites were exposed to hydrothermal aging to investigate the effects of a hot and humid environment. The mechanical properties of CF/PC composites with different aging times (0, 7, 14, 21, 28, 35, and 42 days) were analyzed. It was demonstrated that the storage modulus of CF/PC composites with hot water aged for seven days has the highest value in this sampling period and frequency. Through the solid particle erosion experiment, it was found that the hydrothermal aging causes the deviation of the maximum erosion angle of composites, indicating the composites underwent ductile–brittle transformation. Furthermore, the crack and cavity resulting from the absorption of water was observed via the scanning electron microscope (SEM). This suggested that the hydrothermal aging leads to the plasticization and degradation of CF/PC composites, resulting in a reduction of corrosion resistance.

Effect of hot water on the mechanical performance of unidirectional carbon fiber-reinforced nylon 6 composites

2020 ◽  
Vol 200 ◽  
pp. 108426 ◽  
Author(s):  
Yan Ma ◽  
Shanshan Jin ◽  
Tomohiro Yokozeki ◽  
Masahito Ueda ◽  
Yuqiu Yang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Mechanical Performance ◽  
Nylon 6 ◽  
Hot Water ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

Direct Write Additive Manufacturing of High-Strength, Short Fiber Reinforced Sandwich Panels

2020 ◽  
Author(s):  
Nashat Nawafleh ◽  
Emrah Celik
Keyword(s):  
Additive Manufacturing ◽  
Carbon Fiber ◽  
Mechanical Performance ◽  
Sandwich Panels ◽  
High Strength ◽  
Direct Write ◽  
Fiber Reinforced ◽  
Short Carbon Fiber ◽  
Carbon Fiber Reinforced ◽  
Short Carbon

Abstract Additive manufacturing (AM) is a novel technology which allows fabrication of complex geometries from digital representations without tooling. In addition, this technology results in low material waste, short lead times and cost reduction especially for the production of parts in low quantities. Current additive manufacturing processes developed for thermoplastic sandwich panels suffer from an unavoidable weak mechanical performance and low thermal resistance. To overcome these limitations, emphasis is paid in this study on direct write AM technology for the fabrication of short carbon fiber-reinforced sandwich panel composites. Sandwich panels using different infill densities with high strength (> 107 MPa), and high short carbon fiber volume (46%) were attained successfully. In parallel to the strength enhancement, these sandwich panels possessed reduced densities (0.72 g/cc3) due to their lightweight lattice core structures. The mechanical performance of the created sandwich panels was examined and compared to the unreinforced, base ink structures by performing compression tests. Successful fabrication and characterization of the additively manufactured thermoset-based carbon fiber reinforced, sandwich panels in this study can extend the range of applications for AM composites that require lightweight structures, high mechanical performance as well as the desired component complexity.

Effect of Hot Water Environment on Tensile Fracture Properties of Carbon Fiber Reinforced Polyoxamide Composites

2014 ◽  
Vol 627 ◽  
pp. 177-180
Author(s):  
Kazuto Tanaka ◽  
Shunsuke Maehata ◽  
Tsutao Katayama ◽  
Masahiro Shinohara
Keyword(s):  
Carbon Fiber ◽  
Water Environment ◽  
Polyamide 6 ◽  
Hot Water ◽  
Tensile Fracture ◽  
Fiber Reinforced ◽  
Fracture Properties ◽  
Properties Of Materials ◽  
Carbon Fiber Reinforced ◽  
Reinforced Thermoplastics

Matrices for carbon fiber reinforced thermoplastics are appropriate to use comparatively cheaper resins such as polyamide. However polyamide 6 is highly hygroscopic and the mechanical properties of materials are reported to be degraded by water absorption. Polyoxamide (PX) has been developed as polyamide resins with low hygroscopicity. In this study, the effect of hot water environment on the tensile fracture properties of carbon fiber/polyoxamide composites has been clarified.

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