Green epoxy resin/date stone flour biocomposites: Effect of filler chemical treatments on elastic properties

2021 ◽  
Author(s):  
Said Rabhi ◽  
Said Abdi ◽  
Rafik Halimi ◽  
Nacera Benghanem
Keyword(s):  
Epoxy Resin ◽  
Elastic Properties ◽  
Chemical Treatments

Extrusion Freeform Fabrication of Chopped-Fibre Reinforced Composites

1997 ◽  
Vol 9 (4) ◽  
pp. 449-456 ◽  
Author(s):  
Paul Calvert ◽  
Tung Liang Lin ◽  
Hogan Martin
Keyword(s):  
Carbon Fibre ◽  
Epoxy Resin ◽  
Elastic Properties ◽  
Fibre Orientation ◽  
Three Dimensional ◽  
Reinforced Composites ◽  
Freeform Fabrication ◽  
Large Influence ◽  
Fibre Reinforced Composites ◽  
Extrusion Freeform Fabrication

Extrusion freeform fabrication is a process whereby three-dimensional parts are built by writing successive layers of material onto a support. In this case, two types of epoxy resin have been formed into test bars containing varying fractions of chopped carbon fibre of various lengths. It is shown that the fibre orientation follows the writing direction and has a large influence on the directional elastic properties of the composite. Test bars have also been formed containing multiple layers of reinforced and unreinforced resin to demonstrate the flexibility of this method.

Magnetic and Elastic Properties of Nanocomposites Containing Soft (Ni) and Hard (SrFe12O19) Magnetic Particles

2013 ◽  
Vol 203-204 ◽  
pp. 310-314 ◽  
Author(s):  
Marian Kubisztal ◽  
Artur Chrobak ◽  
Julian Kubisztal ◽  
Jozef Stabik ◽  
Agnieszka Dybowska ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Elastic Properties ◽  
Elastic Deformation ◽  
Magnetic Particles ◽  
Size Reduction ◽  
Magnetic Parameters ◽  
Ni Powder ◽  
Powder Particles ◽  
Epoxy Resin Coating ◽  
Vibrating Reed

In the present paper magnetic and elastic properties of the Ni+SrFe12O19 nanocomposites were examined in detail. Samples were in two forms: i) mechanically pressed cylindrical pellets and ii) filled polymer (amine-epoxy resin) coating on aluminum substrate. The so called apparent Young’s modulus was determined by measurements of the free flexural vibrations frequency by means of vibrating reed technique. Magnetic research was carried out using VSM magnetometer. It was shown that replacement of SrFe12O19 with nano Ni powder results in an increase in material resistivity to elastic deformation. The influence of size reduction of SrFe12O19 powder particles on magnetic parameters of the studied nanocomposites were discussed in detail.

scholarly journals Analysis of the elastic properties of CNTs and their effect in polymer nanocomposites

2018 ◽  
Vol 188 ◽  
pp. 01018
Author(s):  
Manuel Laspalas ◽  
Agustín Chiminelli ◽  
Carlos Saenz ◽  
Francisco Serrano ◽  
Clara Valero
Keyword(s):  
Epoxy Resin ◽  
Polymer Nanocomposites ◽  
Elastic Properties ◽  
Micromechanical Model ◽  
Mean Field ◽  
Homogenization Theory ◽  
Elastic Behavior ◽  
Epoxy Resin System ◽  
Transversally Isotropic ◽  
Dynamics Simulations

A study about of the influence of CNTs elastic properties in polymer nanocomposites is presented. These properties are assumed to be dependent on the CNTs diameter and number of walls, identified as key characteristics of these reinforcements. The analysis is carried out using a micromechanical model based on the mean field homogenization theory for the prediction of the composite elastic properties of a MWCNT – epoxy resin system. A transversally isotropic elastic behavior has been considered for the CNTs based on values/dependencies reported in the literature. Interphase properties between the CNT and epoxy resin has been investigated by means of molecular dynamics simulations.

scholarly journals Enhancement of Mechanical Properties of an Epoxy Composite Reinforced with Hibiscuss Sabdariffa VAR. Altissima Fiber Micro Cellulose

2019 ◽  
Vol 8 (2S4) ◽  
pp. 477-480 ◽  
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Steam Explosion ◽  
Epoxy Composite ◽  
Epoxy Composites ◽  
Reinforced Composites ◽  
Fiber Loading ◽  
Cellulosic Fibers ◽  
Chemical Treatments ◽  
Particle Form

The effects of micro cellulose reinforcement on the mechanical properties of epoxy composites were investigated. Micro cellulose were extracted from Hibiscuss sabdariffa fibers using the steam explosion technique and repeated chemical treatments. Reinforcing of epoxy resin with micro cellulosic fibers was done in particle form. Tensile, hardness and impact results revealed that mechanical properties of micro cellulose reinforced composites increases for 10%, 20% and 30% fiber loading and then decrease for 40% loading. Composite with 30% of micro cellulose enhanced the overall mechanical properties of composite, due to the enhanced fiber-matrix adhesion and micro cellulose reinforcement.

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