Surface modification of polyimide fibers by novel alkaline-solvent hydrolysis to form high-performance fiber-reinforced composites

2018 ◽  
Vol 135 (33) ◽  
pp. 46595 ◽  
Author(s):  
Xiaolin Yi ◽  
Xiao Kuang ◽  
Mengying Zhang ◽  
Xia Dong ◽  
Dezhen Wu ◽  
...  
Keyword(s):  
Surface Modification ◽  
High Performance ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Polyimide Fibers ◽  
High Performance Fiber

scholarly journals The Investigation Thermal Efficiency of High Performance Fiber Reinforced composites with additive Multi-Wall Carbon Nanotubes

2020 ◽  
Vol 4 (1) ◽  
Keyword(s):  
Thermal Efficiency ◽  
Temperature Increase ◽  
High Performance ◽  
Traffic Accidents ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Multi Wall Carbon Nanotubes ◽  
High Performance Fiber ◽  
Heating Test

Every year thousands of traffic accidents occur due to icing of roads which challenge lives and property. In this study the suitability of steel fibers and multi wall carbon nano tube (MWCNT) for electrical (Joule) heating was determined by cluster heating test which is novel for the literature. In this study, the bearing elements of the buildings and roads are intended to be a heater. Experiments were tested for a total of four weeks, once every week. During the tests, the top surface temperature, the voltage supplied and the current were recorded. The temperature increase and temperature increase rate were determined. Mortar having MWCNT ratio showed a superior heating performance for 4 weeks. In this study, the bearing elements of the buildings and roads are intended to be a heater. The thermal efficiency of the high performance fiber reinforced composites were investigated.

Electromagnetic Shielding Properties of Super Fiber-Reinforced Composites

2010 ◽  
Vol 123-125 ◽  
pp. 65-68 ◽  
Author(s):  
Hua Yang ◽  
Atsuhiko Yamanaka ◽  
Qing Qing Ni
Keyword(s):  
High Performance ◽  
High Strength ◽  
Electromagnetic Shielding ◽  
Fiber Reinforced Composites ◽  
Shielding Effect ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Polyethylene Fiber ◽  
High Performance Fiber ◽  
Shielding Properties

Electromagnetic shielding effect material is needed because electronic devices suffer electromagnetic interference. Otherwise, in many engineering designs such as antenna fairings, sonar cover and stealth aircraft, materials with good electromagnetic penetration are desired. High performance fiber-reinforced composites have high specific strength and mechanical properties, and there is therefore a need to develop an electronics enclosure with optimum shielding by using a combination of particular fiber reinforcements and a polymer matrix. This paper describes the development of high-performance fiber-reinforced composites that use four high strength fibers (super fibers), Dyneema SK60 (an ultra-high molecular weight polyethylene fiber), Zylon HM (poly-p-phenylenebenzobisoxazole fiber), Technora T-241J (aramid fiber) and Torayca T800HB (carbon fiber). These super fibers were fabricated by compression molding and their shielding effectiveness (SE) was tested. The results showed that the newly developed Dyneema fiber, Zylon fiber and Technora fiber composites exhibited low electromagnetic shielding properties of 1.3~2.3 dB at a frequency of 0.5~18 GHz. Furthermore, the Torayca fiber composite has high electromagnetic shielding properties of 10.2~20.7 dB at the same frequency. It is expected that these high-strength composites with optimum SE can be obtained by controlling the electromagnetic shielding properties from hybrid multi-fiber structures.

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