Tensile Behavior of Polypropylene Reinforced with Comminutes Extracted from Out-of-Condition Aerospace Grade Carbon Fiber Prepreg Waste

2015 ◽  
Vol 761 ◽  
pp. 526-530
Author(s):  
Noraiham Mohamad ◽  
Anisah Abd Latiff ◽  
Mohamad Azrul Drahman ◽  
Siti Rahmah Shamsuri ◽  
Jeeferie Abdil Razak ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Carbon Fiber ◽  
End Of Life ◽  
High Performance ◽  
Industry Waste ◽  
Melt Compounding ◽  
C 50 ◽  
Reinforced Thermoplastics ◽  
Internal Mixer

Carbon fiber reinforced thermoplastics are in demand for high performance composites, particularly for the aircraft industry. Waste disposal of carbon fiber in the form of off-cuts, out of life of prepreg and end-of-life components lead to the environmental pollution. This study focuses on the processing and characterization of carbon fiber prepreg comminutes reinforced polypropylene (PP) produced by melt compounding using an internal mixer. In this study, end-of-life carbon fiber prepreg were crushed into fine fibers and dried in oven at 220°C for one hour. It was divided into two types; (1) partially cured carbon fiber prepreg (c-CFP) and, (2) fully cured carbon fiber prepreg (c-CF). The composites were prepared by melt compounding in a Haake internal mixer at 180°C, 50 rpm for 10 minutes. Samples were tested for tensile properties (ASTM D638) and the morphology of fractured surface was observed using Scanning Electron Microscopy (SEM). Increasing carbon fiber in polypropylene was found to increase the Young’s modulus of the composites, but decreased the tensile strength. However, the tensile strength of composites with c-CFP were observed to surpass the neat PP at every loading level. Whereas for composites with c-CF the tensile strength was comparable to the neat PP only within the range of 3 – 5 wt.%.

Preparation and Characterization of PLA /Rice Straw Fiber Composite

2011 ◽  
Vol 71-78 ◽  
pp. 1154-1157 ◽  
Author(s):  
Zhi Fei Liao ◽  
Guo Lin Song ◽  
Feng Shi ◽  
Zhan Song Yin ◽  
You Yang ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Tensile Strength ◽  
Rice Straw ◽  
Mechanical Performance ◽  
Fiber Composite ◽  
Fiber Composites ◽  
Interface Effect ◽  
Coupling Agents ◽  
Internal Mixer

The PLA/Rice straw fiber composites with various content ratios were prepared by using an internal mixer and a flatten press. The thermal properties, interface effect and mechanical performance of as-prepared PLA/Rice straw fiber composites were studied by mechanical performance measurement, TG, DSC and SEM technique. It was found that increasing the content of rice straw fiber leads to the decrease of the melting temperature while the improvement of the crystallinity of these composites. Introducing the rice straw fibers into PLA matrix does not result in any enhancement of mechanical property. However, the tensile strength of the composite increases as the content of rice straw fiber increases from 10% to 30%. The interface effect between fibers and PLA was obviously observed by SEM photo. It was thought such an issue could be improved by the addition of appropriate coupling agents into the composites.

Nano‐engineering of high‐performance PA6.6 nanocomposites by the integration of CVD‐grown carbon fiber on graphene as a bicomponent reinforcement by melt‐compounding

2019 ◽  
Vol 136 (47) ◽  
pp. 48347 ◽  
Author(s):  
Elcin Cakal Sarac ◽  
Leila Haghighi Poudeh ◽  
Jamal Seyyed Monfared Zanjani ◽  
Zeki Semih Pehlivan ◽  
Fevzi Çakmak Cebeci ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
High Performance ◽  
Melt Compounding

An Alternative Approach for FRCM Matrix Tensile Strength Evaluation

2019 ◽  
Vol 817 ◽  
pp. 365-370 ◽  
Author(s):  
Alessandro Bellini ◽  
Marco Bovo ◽  
Andrea Incerti ◽  
Claudio Mazzotti
Keyword(s):  
Tensile Strength ◽  
High Performance ◽  
Mechanical Characterization ◽  
Experimental Tests ◽  
Tensile Tests ◽  
Test Methods ◽  
Test Method ◽  
The Matrix ◽  
Flexural Tests

Structural retrofitting with composite materials proved to be an effective technique for rehabilitation of degraded or damaged masonry and concrete buildings. Nowadays, Fiber Reinforced Cementitious Matrix (FRCM) composites are widely used as externally bonded strengthening systems thanks to their high performance, low weight and easiness of installation. Several experimental tests and numerical studies are currently available concerning the tensile and bond behavior of FRCM systems, but a debated and still open issue concerns the methods for the mechanical characterization of the mortar used as matrix within the strengthening system. The present paper analyses and compares different test methods for determining the matrix tensile strength. Pure tensile and flexural tests have been carried out on different mortar matrix samples. In order to evaluate which is the most suitable value to be considered for a correct interpretation and modeling of the composite system, the experimental results obtained through flexural tests on standard mortar specimens have been compared with the outcomes obtained from direct tensile tests on FRCM coupons. The present study represents only a first step for the definition of the most appropriate test method for the mechanical characterization of the matrix used within FRCM strengthening systems.

scholarly journals Development of Carbon Fiber-Reinforced Thermoplastics for Mass-Produced Automotive Applications in Japan

2021 ◽  
Vol 5 (3) ◽  
pp. 86
Author(s):  
Yi Wan ◽  
Jun Takahashi
Keyword(s):  
Carbon Fiber ◽  
Mass Production ◽  
High Performance ◽  
Mechanical Performance ◽  
Fiber Reinforced ◽  
Recent Developments ◽  
Carbon Fiber Reinforced ◽  
Material Solution ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics

The application of carbon fiber-reinforced thermoplastics (CFRTPs) for automotive mass production is attracting increasing attention from researchers and engineers in related fields. This article presents recent developments in CFRTPs focusing on the systematic development of lightweight CFRTP applications for automotive mass production. Additionally, a related national project of Japan conducted at the University of Tokyo is also introduced. The basic development demands, the specific requirements of CFRTPs for lightweight applications in automotive mass production, and the current development status and basic scientific outputs are discussed. The development of high-performance CFRTPs (chopped carbon fiber tape-reinforced thermoplastics (CTTs)) and functional CFRTPs (carbon fiber mat-reinforced thermoplastics (CMTs)) is also introduced. The fabrication process control of CTTs is evaluated, which demonstrates the extreme importance of the mechanical performance. The ultralight lattice, toughened structures, and orientation designable components of CMTs provide a flexible multi-material solution for the proposed applications. Moreover, highly efficient carbon fiber recycling technology is discussed, with recycled carbon fibers exhibiting outstanding compatibility with CFRTPs. A cost sensitivity analysis of carbon fiber and CFRTPs is conducted to guarantee the feasibility and affordability of their application. This article also discusses the trends and sustainability of carbon fiber and CFRTPs usage. The importance of the object-oriented optimal development of CFRTPs is emphasized to efficiently exploit their advantages.

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