Anisotropic mechanical properties of oriented carbon fiber filled polymer composites produced with fused filament fabrication

2017 ◽  
Vol 18 ◽  
pp. 84-94 ◽  
Author(s):  
Delin Jiang ◽  
Douglas E. Smith
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Polymer Composites ◽  
Fused Filament Fabrication ◽  
Filled Polymer ◽  
Anisotropic Mechanical Properties

How the work of adhesion affects the mechanical properties of silica-filled polymer composites

1994 ◽  
Vol 29 (9) ◽  
pp. 2406-2416 ◽  
Author(s):  
S. W. Shang ◽  
J. W. Williams ◽  
K. -J. M. Söderholm
Keyword(s):  
Mechanical Properties ◽  
Polymer Composites ◽  
Work Of Adhesion ◽  
Filled Polymer

Calculation on the Residual Stresses of Injection-Molded Conductive-Carbon-Fiber-Filled Polymer Composites

2012 ◽  
Vol 629 ◽  
pp. 55-59
Author(s):  
Ai Yun Jiang ◽  
Jing Chao Zou ◽  
Bao Feng Zhang ◽  
Hai Hong Wu
Keyword(s):  
Carbon Fiber ◽  
Residual Stresses ◽  
Polymer Composites ◽  
Injection Molding Process ◽  
Molding Process ◽  
Filled Polymer ◽  
The Core ◽  
Packing Pressure ◽  
Core Areas ◽  
Injection Molded

For conductive-carbon-fiber-filled polymer composites, the residual stresses developed during injection molding process may affect not only the molding’s conductive property, but its dimensional stability as well. In order to improve the conductivity of the molding fabricated with this kind of composites, we investigated, using layer removal method, the distribution of the residual stresses of injection-molded conductive-carbon-fiber-filled polypropylene in this paper. The residual stresses were obtained under the actions of different processing conditions. Our results indicate that processing pressures have more significant effects on the residual stresses at the skin areas than the core areas of the sample because of fiber orientation. The tensile stresses of the molding at the core areas drop under the action of packing pressure, but the compressive stresses at the skin areas increase. The results reveal that the action of packing pressure may decrease the anisotropy of the residual stresses in the molding.

Nano-Filled Polymer Composites for Biomedical Applications

2008 ◽  
Author(s):  
Maximiano V. Ramos ◽  
Armstrong Frederick ◽  
Ahmed M. Al-Jumaily
Keyword(s):  
Mechanical Properties ◽  
Polymer Composites ◽  
Polymer Nanocomposites ◽  
Biomedical Applications ◽  
Mixing Time ◽  
Correct Choice ◽  
Processing Parameters ◽  
Experimental Procedure ◽  
Filled Polymer

Polymer nanocomposites offer various functional advantages required for several biomedical applications. For example, polymer nanocomposites are biocompatible, biodegradable, and can be engineered to have mechanical properties suitable for specific applications. The key to the use of polymer nanocomposites for different applications is the correct choice of matrix polymer chemistry, filler type, and matrix-filler interaction. This paper discusses the results of a study in the processing and characterization of nono-filled polymer composites and focuses on the improvement of its properties for potential biomedical applications. The experimental procedure for the preparation of nano-filled polymer composite by ultrasonic mixing is described. Different types of nanofillers and polymer matrix are studied. Effects of processing parameters such as percent loading of fillers, mixing time on the mechanical properties of the composites are discussed. Preliminary results indicate improvement in shear and flexural properties, tensile and compressive properties, were observed in the prepared composites for some processing conditions.

Effect of Injection Molding Process on Electrical Conductivity and Mechanical Property of Nanoparticle Filled Polymer Composites

2012 ◽  
Vol 486 ◽  
pp. 34-38
Author(s):  
Jing Chao Zou ◽  
Ai Yun Jiang ◽  
Bao Feng Zhang ◽  
Hai Hong Wu ◽  
Ya Jun Zhou
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Electrical Conductivity ◽  
Polymer Composites ◽  
Testing Machine ◽  
Injection Pressure ◽  
Processing Parameters ◽  
Injection Molding Process ◽  
Molding Process ◽  
Filled Polymer

Authors investigated the relationship among processing parameters, microstructures, electrical conductivity and mechanical property of injection molded nanoparticle filled polymer composites at present study. Standard tensile specimens were injected under different injecting pressures and packing pressures. The molded specimens were removing five layers from the surface to observe the microstructures at different positions of the moldings. The electrical properties were measured with a two-terminal standard resistor under DC condition at room temperature, and the mechanical properties of the moldings were measured by INSTRON 5580 Universal testing machine. The results showed that filled nanoparticles may form the best conductive path under the higher packing pressure matched with higher injection pressure. The mechanical properties of the molding depend on not only the concentration of the nanofiller, but processing conditions as well.

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