scholarly journals Improved Wear-Resistant Performance of Epoxy Resin Composites Using Ceramic Particles

Polymers ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 333
Author(s):  
Amal Nassar ◽  
Mona Younis ◽  
Mohamed Ismail ◽  
Eman Nassar

This work investigated the effects of using a new fabrication technique to prepare polymer composite on the wear-resistant performance of epoxy resin composites under dry friction conditions. Polymer composite samples with different weight contents of silicon carbide (SiC) particles were manufactured. This paper addresses the wear behavior of the obtained samples. With the suggested technique, the samples were prepared from epoxy/silicon carbide particles using a layer of thin kraft paper to prevent the sedimentation of the ceramic particles and to control the weight content of ceramic in the polymer. Kraft paper was used as a layer in the polymer composite. The hardness, wear resistance, and water absorption capacity of the produced epoxy composite samples prepared using the kraft paper technique were evaluated. The morphology of epoxy composite samples showed a significant improvement in the ceramic distribution and enhancement of interface bonding between ceramic and the polymer. The hardness values of the developed polymer composites were enhanced by up to 42.8%, which was obtained at 18 wt.% SiC particles. Increasing the ceramic content in the epoxy also led to the enhancement of wear resistance compared with pure epoxy. The results of the microstructure study also showed that the kraft paper layers helped in maintaining the distribution of the ceramic particles according to the previously specified content in each layer in the sample. Wear tests showed that the wear rate of the polymer composite decreased with the increase in the ceramic content. This study provides a new recycling method for using old kraft paper in polymer composite manufacturing to improve the distribution of ceramic particles in the polymer matrix.

2007 ◽  
Vol 353-358 ◽  
pp. 1374-1377
Author(s):  
Supreyak Kumfu ◽  
V. Chailangka ◽  
Wim Nhuapeng ◽  
Pisith Singjai

Carbon nanotubes (CNTs)/epoxy resin composites were prepared by using a sonication technique. Microstructure, mechanical and physical properties such as hardness, wear resistance, tensile strength and density of the composite samples were examined. The tensile strength of the 0.6 vol.% CNTs/epoxy resin composites compared with the monolithic epoxy resin increased 183%. The hardness and wear resistance were maximum at 0.8 vol.% CNTs. Moreover, SEM image of the composites indicated that there is good adhesion between CNTs and the epoxy resin.


2011 ◽  
Vol 399-401 ◽  
pp. 461-464
Author(s):  
Wei Geng ◽  
Lei Lei Song ◽  
Jia Lu Li

In this paper, the tensile strength of 3-dimension-4-direction braided/epoxy resin composites after accelerated aging for different period of time at 150°C was investigated. The tensile tests of 3-dimension-4-direction braided/epoxy resin composite samples without aging and aged 60 hours, 120 hours, 180 hours, at 150°C were carried out. The damage forms of braided composite samples tested were investigated. The experiment result indicates that the accelerated aging process at 150°C has some effect on the tensile strength of braided composite samples. The average tensile strengths of composite samples aged 60 hours, 120 hours, and 180 hours period of time at 150°C are 92.44%, 91.62% and 84.91% of average tensile strength of braided composite samples without aging, respectively. This means that the tensile strength will be decreased when the aging period of time increases at 150°C. The damage form of samples tested shows that when accelerated aging, the resin in the composite samples is damaged, which makes the adhesive force between fiber bundles and epoxy resin decline, so that the ability of fiber and resin bearing the tensile load together decreases.


2008 ◽  
Vol 55-57 ◽  
pp. 553-555
Author(s):  
Haruthai Longkullabutra ◽  
Wim Nhuapeng ◽  
Wandee Thamjaree ◽  
Tawee Tunkasiri

An experimental was investigated the condition of reinforcement of hemp fiber and hemp fiber/epoxy resin composites with carbon nanotubes (CNTs).The CNTs were mixed with several liquid such as ethanol, latex, water glue and epoxy resin. These mixtures were added to hemp fiber and prepared the hemp fiber/epoxy resin composites. The mechanical properties of both fiber and composite samples were measured. It was found that the mixture of epoxy resin and CNTs with CNTs ratio of 20 vol% in hemp fiber showed the highest tensile strength of 25.43 N. and the same mixture in hemp fiber/epoxy resin composites showed the highest tensile strength of 31.82 MPa and elongation of 7.40 %.


2008 ◽  
Vol 8 (3-4) ◽  
pp. 295-299 ◽  
Author(s):  
W. Nhuapeng ◽  
W. Thamjaree ◽  
S. Kumfu ◽  
P. Singjai ◽  
T. Tunkasiri

Author(s):  
Tamara Indrusiak Silva ◽  
Ketly Pontes Soares ◽  
Iaci Miranda Pereira ◽  
Loan Filipi Calheiros ◽  
Bluma Guenther Soares

The present work evaluates a multilayer structure based on epoxy resin for stealth technology. The structure consists of two absorber layers with nanoferrite and a resistive layer between them containing polyaniline (PANI) with and without carbon nanotube (CNT). The best reflection loss result multilayer structure analyzed was Ni-PANICNT-Fe with RL = –22dB at 11,9 GHz, justified by higher conductivity loss due to the CNT in PANI epoxy composite.


2011 ◽  
Vol 382 ◽  
pp. 312-315 ◽  
Author(s):  
Liang Sen Liu ◽  
Lei Lei Song ◽  
Jia Lu Li

The tensile strength of 3-dimension-4-direction braided/epoxy resin composites after accelerated aging for different period of time at 180°C was investigated. The tensile tests of 3-dimension-4-direction braided/epoxy resin composite samples without aging and aged 60 hours, 120 hours, 180 hours, at 180°C were carried out. The damage forms of braided composite samples tested were investigated. The experiment result indicates that the accelerated aging process at 180°C has obvious effect on the tensile strength of braided composite samples. The average tensile strengths of composite samples aged 60 hours, 120 hours, and 180 hours period of time at 180°C are 86.29%, 88.59% and 84.12% of average tensile strength of braided composite samples without aging, respectively. This means that the tensile strength of aged braided composites will be decreased. The damage form of samples tested shows that after aging for a long time at 180°C, the resin is damaged badly and becomes brittle which make the bonding force between fiber and resin decrease. This is the reason of the decrease of tensile strength of composites after accelerated aging at 180°C.


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