scholarly journals Carbon Fiber Reinforced Polymers

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5545
Author(s):  
Francesca Lionetto
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibers ◽  
High Performance ◽  
Fiber Reinforced Polymers ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Polymers ◽  
Reinforced Polymers ◽  
Production Methods ◽  
Carbon Fiber Reinforced ◽  
Out Of Autoclave

The current demand for lightweight and high-performance structures leads to increasing applications of carbon fiber reinforced polymers, which is also made possible by novel production methods, automation with repeatable quality, the reduced cost of carbon fibers, out of autoclave processes such as resin transfer molding and resin infusion technologies, the re-use of waste fibers, development in preform technology, high-performance, fast-curing resins, etc [...]

scholarly journals UV-Assisted 3D Printing of Polymer Composites from Thermally and Mechanically Recycled Carbon Fibers

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 726 ◽  
Author(s):  
Andrea Mantelli ◽  
Alessia Romani ◽  
Raffaella Suriano ◽  
Marco Diani ◽  
Marcello Colledani ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
3D Printing ◽  
Carbon Fibers ◽  
Fiber Reinforced Polymers ◽  
Cost Ratio ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Polymers ◽  
Reinforced Polymers ◽  
3D Printed ◽  
Carbon Fiber Reinforced

Despite the growing global interest in 3D printed carbon fiber reinforced polymers, most of the applications are still limited to high-performance sectors due to the low effectiveness–cost ratio of virgin carbon fibers. However, the use of recycled carbon fibers in 3D printing is almost unexplored, especially for thermoset-based composites. This paper aims to demonstrate the feasibility of recycled carbon fibers 3D printing via UV-assisted direct ink writing. Pyrolyzed recycled carbon fibers with a sizing treatment were firstly shredded to be used as a reinforcement of a thermally and photo-curable acrylic resin. UV-differential scanning calorimetry analyses were then performed to define the material crosslinking of the 3D printable ink. Because of the poor UV reactivity of the resin loaded with carbon fibers, a rheology modifier was added to guarantee shape retention after 3D printing. Thanks to a customized 3D printer based on a commercial apparatus, a batch of specimens was successfully 3D printed. According to the tensile tests and Scanning Electron Microscopy analysis, the material shows good mechanical properties and the absence of layer marks related to the 3D printing. These results will, therefore, pave the way for the use of 3D printed recycled carbon fiber reinforced polymers in new fields of application.

Enzymatic Degradation of Epoxy Resins: An Approach for the Recycling of Carbon Fiber Reinforced Polymers

2014 ◽  
Vol 1018 ◽  
pp. 131-136 ◽  
Author(s):  
Katrin Moeser
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibers ◽  
Epoxy Resins ◽  
Polymer Degradation ◽  
Fiber Reinforced Polymers ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Polymers ◽  
Reinforced Polymers ◽  
Polymer Component ◽  
Carbon Fiber Reinforced

Carbon fiber reinforced polymers (CFRPs), particularly epoxy resins, are increasingly applied in innovative products nowadays. At the end of the life cycle of those products, CFRP waste has to be disposed in an ecological way. As of today, no energy effective recycling method is available to recover the valuable carbon fibers in a good quality. The presented study aims to exploit the ability of biological systems in order to efficiently and specifically degrade the polymer and release carbon fibers with minimal material strain. In a first approach environmental microorganisms for degrading the polymer component of epoxy composites into small fragments have to be identified. An analytical method will be developed to identify and quantify the polymer degradation. In a following step, the enzymes that are produced by the microorganisms and are essential for the polymer degradation will be identified, cloned, produced in a high amount and characterized in CFRP recycling studies.

Processing of Carbon Nanotubes and Carbon Nanofibers towards High Performance Carbon Fiber Reinforced Polymers

2017 ◽  
Vol 742 ◽  
pp. 31-37 ◽  
Author(s):  
Gerald Singer ◽  
Harald Rennhofer ◽  
Gerhard Sinn ◽  
Miriam M. Unterlass ◽  
Josef Wendrinsky ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Fiber ◽  
Carbon Nanofibers ◽  
High Performance ◽  
Fiber Reinforced Polymers ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Polymers ◽  
Reinforced Polymers ◽  
Cfrp Composite ◽  
Carbon Fiber Reinforced

Carbon fiber reinforced polymers (CFRPs) are promising composite materials for high-performance and lightweight applications, gaining increasing interest in aerospace and automotive industries. Epoxy thermosets are frequently used as polymer matrices of CFRPs, which are usually responsible for failure of the composite. In this work different types of carbon nanotubes (CNTs) and carbon nanofibers (CNF) are added to the epoxy resin to improve mechanical properties of the whole CFRP composite. The dispersion of the fillers on a three-roll mill (TRM) is shown comparing their dispersion behavior in the resin. Results of increased modulus and strength of the hierarchical composite in four-point bending tests are presented.

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