The effect of chemical treatment on the mechanical and thermal properties of composite materials based on clay reinforced with sawdust

2021 ◽  
Vol 109 (1) ◽  
pp. 101
Author(s):  
Fadhila Mouissa ◽  
Azzedine Benyahia ◽  
Mokhtar Djehiche ◽  
Kamel Belmokre ◽  
Nadir Deghfel ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Chemical Treatment ◽  
Mechanical Test ◽  
Variable Mass ◽  
Mechanical And Thermal Properties ◽  
Test Results ◽  
A Value ◽  
Reinforced Composite ◽  
Desert Areas ◽  
The One

This study investigates the effect of the chemical treatment of sawdust on the mechanical and thermal properties of a clay composite reinforced with sawdust in variable mass proportions: 0.5, 1, 1.5, 2 and 2.5%, intended for use as brick in rural houses in desert areas. The sawdust was chemically treated with 5 wt% NaOH and 0.01 wt% KMnO4 solutions. The mechanical test results of the reinforced composite with alkali-treated sawdust show an increase in flexural and compression strength, reaching a maximum value of 0.89 and 4.85 MPa, respectively. However, the thermal test results show a significant decrease in the thermal conductivity of the sawdust-reinforced composite. The best result recorded is that of untreated sawdust, which has a value of 0.37 (W.m−1.K−1) compared to the one reinforced with treated sawdust.

Mechanical and thermal properties of carbon fiber reinforced composite with silanized graphene as nano-inclusions

2020 ◽  
pp. 002199832095318
Author(s):  
RMR Shagor ◽  
F Abedin ◽  
R Asmatulu
Keyword(s):  
Tensile Strength ◽  
Thermal Properties ◽  
Carbon Fiber ◽  
Fiber Reinforced Composites ◽  
Mechanical And Thermal Properties ◽  
Reinforced Composites ◽  
Functionalized Graphene ◽  
Fiber Reinforced ◽  
Reinforced Composite ◽  
Carbon Fiber Reinforced

The use of nanofillers to enhance the properties of fiber reinforced composites is limited due to the adverse effect on mechanical properties caused by agglomeration of these nanofillers in the matrix materials. In this study, graphene nanoflakes were functionalized with silane moiety to improve its dispersion, stability and bond strengths in the polymer matrices of the carbon fiber reinforced composites. Wet layup process was applied to incorporate graphene nanocomposites into the dry carbon fibers to make composite panels following the curing cycle of the epoxy and hardener. The impacts of the functionalized graphene on the mechanical and thermal properties of carbon reinforced composite were investigated in detail by tensile test, differential scanning calorimetry, dynamic mechanical analysis and scanning electron microscopy (SEM) analysis. It was observed that nanocomposites with 0.5 wt% silanized graphene exhibited maximum tensile strength and modulus of elasticity, indicating that 0.50 wt% silane functionalized graphene was the optimum nanofiller composition amongst the three different compositions investigated. The nanocomposites with 0.25 wt% and 0.50 wt% nanofillers showed improved ductility compared to the control sample. Based on the SEM studies on the crack zones, major morphological changes were observed after the salinization process. The interfacial interaction between epoxy and silane moiety of the graphene and reduction in the tendency to agglomerate could account for the improved properties of the nanocomposite observed here. Nanocomposites with silanized graphene showed overall higher glass transition temperature (Tg) and tensile strength than those with pristine graphene and control samples.

The Improvement in Mechanical and Thermal Properties of Biodegradable Poly(Butylene Succinate) (PBS) Nanocomposites with Low Loadings of Graphene Oxide (XGO)

2016 ◽  
Vol 872 ◽  
pp. 235-241
Author(s):  
Achanai Buasri ◽  
Udon Kampichit ◽  
Panupong Salacharoen ◽  
Pouvadon Sangsawee ◽  
Vorrada Loryuenyong
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Thermal Properties ◽  
Mechanical Test ◽  
Mechanical And Thermal Properties ◽  
Butylene Succinate ◽  
Degradation Temperature ◽  
Transmission Electron ◽  
Uniform Dispersion ◽  
Biodegradable Poly

This research aims to study the physical, mechanical and thermal properties of poly (butylene succinate)/graphene oxide (PBS/XGO) nanocomposites. The polymer nanocomposites were successfully prepared by solution processing in conjunction with compression molding at various contents of XGO from 0-1.0 wt%. The structure, tensile properties and thermal stability of materials have been investigated by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), mechanical test, and thermogravimetric analysis. The results revealed that PBS and XGO could mix with each other homogeneously, and uniform dispersion of XGO in the PBS matrix occurred when the filler content was less than 1.0 wt%. Young′s modulus and degradation temperature (Td) of biopolymer were greatly improved by the addition of a small amount of XGO (1.0 wt%). The nanocomposites have potential application as packing materials.

scholarly journals Effect of the Electron Beam on the Alloy Properties of Polymethyl Methacrylate and Cycloolefin Copolymer

2021 ◽  
Author(s):  
Maryam Khosravinezhad ◽  
Masoumeh Kazemi
Keyword(s):  
Electron Beam ◽  
Thermal Properties ◽  
Polymethyl Methacrylate ◽  
Electrical Resistance ◽  
Moisture Absorption ◽  
Mechanical Test ◽  
Impact Resistance ◽  
Mechanical And Thermal Properties ◽  
Optimal Sample ◽  
Alloy Properties

Polymethyl methacrylate (PMMA) is a transparent thermoplastic with excellent optical properties, transparent surface, low moisture absorption, tensile and electrical resistance. In this study, the alloy was prepared through PMMA and cycloolefin copolymer (COC) due to some similar properties. The mechanical test showed that properties such as impact resistance, elongation, tensile, and flexural strength decreased by adding COC by up to 20% due to less incompatibility and miscibility, but mentioned properties improved by adding COC 40% due to sub-phase generation. The DSC and DMTA tests showed improvement in the thermal properties of alloys by adding 40% COC. SEM micrographs exhibited a softer surface and more phase elongation of the alloy. Finally, the sample was selected as the optimal sample in terms of mechanical properties irradiated by electron beam, and amplification results showed that a dose of 50 KGY increased the mechanical and thermal properties relatively.

Mechanical and thermal properties of polypropylene reinforced with Alfa fiber under different chemical treatment

2012 ◽  
Vol 35 ◽  
pp. 318-322 ◽  
Author(s):  
F.Z. Arrakhiz ◽  
M. Elachaby ◽  
R. Bouhfid ◽  
S. Vaudreuil ◽  
M. Essassi ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Chemical Treatment ◽  
Mechanical And Thermal Properties
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