Studying the mechanical properties of composites made of Kenaf-Nylon 66 fabric, silica nanoparticles, and epoxy resin

Phenol novolac epoxy resin is a polymer matter which its properties can be modified for industrial needs. In this research, nanocomposites of phenol novolac epoxy resin and unsaturated polyester are made nano Bentonite and silica nanoparticles as filler. For this purpose, effect of nanoparticles percent on nanocomposite formation is studied and their physical, mechanical and thermal properties are obtained. The presence of unsaturated polyester in this process forms a cross-link capable of improving the physical and mechanical properties of epoxy resin. Fracture behavior was determined by a SEM device. Moreover, TGA, DSC, impact tests and bending test were applied for data analysis. When process ability is growing, moisture absorption decreases. Fracture toughness was also evaluated in a stoichiometric network. Physical and mechanical properties improve significantly with increasing nanoparticles. The most important reason for using this nanocomposite is its high resistance to corrosion.

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Tailoring the Mechanical Performance of Epoxy Resin by Various Nanoparticles

Polymers and Polymer Composites ◽

10.1177/096739110801600806 ◽

2008 ◽

Vol 16 (8) ◽

pp. 527-533 ◽

Cited By ~ 2

Author(s):

Sheng Liu ◽

Hui Zhang ◽

Zhong Zhang ◽

Taihua Zhang ◽

Stephan Sprenger

Keyword(s):

Mechanical Properties ◽

Fracture Toughness ◽

Tensile Strength ◽

Epoxy Resin ◽

Silica Nanoparticles ◽

Mechanical Performance ◽

Sol Gel ◽

Nanoparticle Dispersion ◽

Nanosilica Particles ◽

The Cost

Flexible organic elastomeric nanoparticles (ENP) and two kinds of rigid inorganic silica nanoparticles were dispersed respectively into a bisphenol-A epoxy resin in order to tailor and compare the performance of mechanical properties. It was found that the well-dispersed flexible ENP greatly enhanced the toughness of the epoxy with the cost of modulus and strength. Comparatively, the rigid silica nanoparticles improved Young's modulus, tensile strength and fracture toughness simultaneously. Both fumed and sol-gel-formed nanosilica particles conducted similar results in reinforcing the epoxy resin, although the latter exhibited almost perfect nanoparticle dispersion in matrix. The toughening mechanisms of nanocomposites were further discussed based on fractographic analysis.

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Mechanical properties of composites made of hybrid fabric impregnated with silica nanoparticles and epoxy resin

Modern Physics Letters B ◽

10.1142/s0217984917502359 ◽

2017 ◽

Vol 31 (26) ◽

pp. 1750235

Author(s):

N. Kordani ◽

M. Alizadeh ◽

F. Lohrasby ◽

R. Khajavi ◽

H. R. Baharvandi ◽

...

Keyword(s):

Mechanical Properties ◽

Epoxy Resin ◽

Natural Fibers ◽

Shear Thickening ◽

Silica Particles ◽

Nano Silica ◽

Shear Thickening Fluid ◽

Synthetic Fibers ◽

Hybrid Fabric ◽

Properties Of Composites

In this study, the mechanical properties of composites will be examined which were made from Kenaf and hybrid fabric with a simple structure that was coated with epoxy resin and nano silica particles. This fabric cotton has a different situation in terms of yarn score and the type of fiber that is used in textiles. Nano silica particles of 200 nm, polyethylene glycol with 200 molecular weights and ethanol with mechanical weight molecular with ratio of 6:1 will be mixed. Suspension of 60% was chosen according to the silica particles. The D6264 standard test for concentrated force was carried out through the cone edge to determine the strength of each of the samples. Increasing of resistance against penetration in the Kenaf samples from the raw until impregnated with the shear thickening fluid is less than the hybrid samples. Slippage of the fibers with the change of round edge indenter to cone edge indenter has changed. Penetration by cone edge to the cloth is done with lower force and it shows the effect of slippage of fibers on the resistance of the penetration. Samples impregnated with the shear thickening fluid in comparison with epoxy resin have lower resistance. Slippage of natural fibers in comparison with synthetic fibers is lower and on the other hand the average of friction between fibers in the natural fibers is more than synthetic fibers.

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Physicomechanical Properties of Epoxyurethane Biocomposites Strengthened with Hemp Wood Core

French-Ukrainian Journal of Chemistry ◽

10.17721/fujcv9i1p9-18 ◽

2021 ◽

Vol 9 (1) ◽

pp. 9-18

Author(s):

Tetian Samoilenko ◽

Larysa Yashchenko ◽

Natalia Yarova ◽

Oleh Babich ◽

Oleksandr Brovko

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Flexural Strength ◽

Soybean Oil ◽

Epoxy Resin ◽

Physicomechanical Properties ◽

Polymer Matrices ◽

Epoxidized Soybean Oil ◽

Maximum Content ◽

Properties Of Composites

Hemp wood core (HWC) filled Si-containing epoxyurethane biocomposites, in which diane epoxy resin was replaced with epoxidized soybean oil (ESO), were obtained. It was shown that the tensile strength of ESO-containing polymer was higher, and the flexural strength was lower than those of original polymer. HWC was especially effective strengthening filler for modified epoxyurethanes, because in that case mechanical properties of composites were higher than those of unfilled polymer matrices. Particularly, flexural and tensile strength of unfilled epoxyurethane with maximum content of ESO were 8.1 and 6.8 MPa respectively, while in corresponding composite they reached 17.3 and 15.7 MPa.

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The Effect of Sizing Agent of Carbon Fibre on the Interface of Electron Beam Cured Composites

Advanced Composites Letters ◽

10.1177/096369351102000601 ◽

2011 ◽

Vol 20 (6) ◽

pp. 096369351102000

Author(s):

Jianwen Bao ◽

Ye Li ◽

Xiangyu Zhong ◽

Xiangbao Chen

Keyword(s):

Mechanical Properties ◽

Electron Beam ◽

Carbon Fibre ◽

Heat Resistance ◽

Epoxy Resin ◽

Chemical Structure ◽

Carbon Fibres ◽

Composite Properties ◽

Properties Of Composites

To understand the effect of interface on the properties of electron beam cured composites, the composition and its chemical structure of the sizing agent of carbon fibres were investigated. The results show that there are alkali groups in the sizing agent of T300 and T800 carbon fibres, and these alkali groups react with the strong proton acids that are generated by the initiator and hinder the EB curing of cationic epoxy resin matrices. The properties of the composites of T300 and T800 carbon fibres cured by EB were poor. In the composites of T700, M40 and M40J carbon fibres, the effects of the sizing agent of the carbon fibres on the EB curing and the composite properties are less than for T300 and T800. After the carbon fibres were extracted by acetone, the properties of their composites improved. In particular, the heat-resistance and mechanical properties of composites of T300 and T800 carbon fibre increased greatly.

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The effect of the modification of an epoxy resin by liquid oligomers on the physical-mechanical properties of composites

Voprosy Khimii i Khimicheskoi Tekhnologii ◽

10.32434/0321-4095-2020-130-3-122-127 ◽

2020 ◽

pp. 122-127

Keyword(s):

Mechanical Properties ◽

Epoxy Resin ◽

Properties Of Composites

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Investigation on Effect of Nano-Fillers on Mechanical Properties of Epoxy Based Composites Using ANOVA

Materials Science Forum ◽

10.4028/www.scientific.net/msf.904.137 ◽

2017 ◽

Vol 904 ◽

pp. 137-141 ◽

Cited By ~ 3

Author(s):

Manjunath Shettar ◽

Pavan Hiremath ◽

U. Achutha Kini ◽

Sathya Shankar Sharma

Keyword(s):

Mechanical Properties ◽

Flexural Strength ◽

Epoxy Resin ◽

High Speed ◽

Astm Standard ◽

Weight Percentage ◽

Basic Properties ◽

Different Types ◽

Properties Of Composites

The present work aims to fabricate and characterize epoxy based composites with varying wt. % of nanoparticles as filler and to investigate and analyze the effects of nanoclay and nanocarbon with different wt. % on the epoxy resin. Different types of composites are prepared using 0, 2, 4 and 6 wt. % of fillers with rest of epoxy resin. Fillers are mixed with the resin by high speed mechanical stirrer for 2 hours. The mixture is transferred to the mould and allowed to cure. The specimens are prepared based on ASTM standard. The specimens are tested for tensile and flexural strength. Adding fillers resulted in change in the basic properties. ANOVA is applied to find the significance effect of 4 different weight percentage of fillers and different variety of fillers on the properties of composites.

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Mechanical Characterization and Fracture Analysis of Epoxy Resin Composites Reinforced with Quasi-Unidirectional Salago Fibers

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.324.145 ◽

2021 ◽

Vol 324 ◽

pp. 145-150

Author(s):

Jerome D. Lopena ◽

Jeremiah C. Millare

Keyword(s):

Mechanical Properties ◽

Epoxy Resin ◽

Flexural Modulus ◽

Research Work ◽

Natural Fibers ◽

Fracture Analysis ◽

Fiber Loading ◽

Weight Content ◽

Izod Impact ◽

Properties Of Composites

The good environmental effect and possible cost reduction which can be achieved by reinforcing natural fibers in composites while improving some properties led to the development of these materials in various fields. In terms of mechanical properties of composites with natural fibers, both fiber loading and their orientation in the matrices are important factors. In this research work, the effects on the mechanical properties of reinforcing quasi-unidirectional salago fiber in epoxy resin were investigated. Varying alkaline treated fiber contents of 5 %, 10 % and 15 % by weight were characterized through tensile, flexural and impact tests. Fracture analysis after mechanical testing was done with the aid of optical microscopy. As the fiber weight content increases, results revealed enhancements on tensile strength, modulus of elasticity, flexural modulus and impact strength. Overall, the 15 wt. % fiber loading obtained the highest mechanical properties with average tensile and Izod impact strengths of 89.2 MPa and 137 J/m, respectively.

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