Effect of ultrasonic parameters on the mechanical properties of glass fiber reinforced polyester filled with nano-clay

2020 ◽  
pp. 152808372091834
Author(s):  
M Megahed ◽  
MA Agwa ◽  
AA Megahed
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Glass Fiber ◽  
Control Mode ◽  
Nano Clay ◽  
Maximum Improvement ◽  
Polyester Matrix ◽  
Ultrasonic Parameters ◽  
Polyester Composites ◽  
Sonication Parameters

Ultrasound sonication is one of the promising techniques to disperse the nanoparticles into a polymeric matrix thoroughly. In this study, the effects of ultrasonic parameters (amplitude%, time, and cycle of sonication) on the dispersion of 1 wt% nano-clay in polyester matrix were investigated. To disperse the nano-clay into the polyester matrix, sonication amplitudes of 40 and 80%; sonication times of 0.5, 1, and 2 h; and pulsed as well as continuous cycle acoustic irradiation modes were used. Compared with the unfilled glass fiber/polyester composites, the tensile strength and fracture toughness of glass fiber/polyester composites filled with nano-clay were improved with all sonication parameters. The ultrasonic parameters were of significant importance for dispersing nano-clay onto glass fiber/polyester composites and improving the interfacial properties of the composites. Sonication using an amplitude of 40% with pulse control mode of 0.5 cycle and time of 2 h resulted in maximum improvement in both ultimate tensile strength and fracture toughness of 22 and 33.4%, respectively, as compared to neat specimens.

Can ultrasonic parameters affect the impact and water barrier properties of nano-clay filled glass fiber/polyester composites?

2020 ◽  
pp. 152808372096073
Author(s):  
AA Megahed ◽  
MA Agwa ◽  
M Megahed
Keyword(s):  
Glass Fiber ◽  
Impact Resistance ◽  
Impact Behavior ◽  
Water Barrier ◽  
Nano Clay ◽  
Polyester Matrix ◽  
Ultrasonic Parameters ◽  
Polyester Composites ◽  
Sonication Parameters ◽  
The Impact

Good dispersion of the nanoparticles into the polymer is considered a critical issue, as it can provide higher strength and stiffness while poor dispersion is seen to decrease those properties. In the present work, the effect of three ultrasonic parameters (amplitude, time and cycle of sonication) on sonication technique for dispersing 1 wt.% nano-clay in polyester matrix was investigated. To disperse the nano-clay into the polyester matrix, sonication frequencies of 40% and 80%, sonication times of 0.5, 1 and 2 hours and pulse of 0.5 and 1 cycle were used. The effect of these ultrasonication parameters on water barrier and impact behavior of unfilled and filled glass fiber (GF)/polyester with nano-clay under dry, distilled and seawater conditions was studied. Results showed that, water absorption of nano-filled composites dispersed with all sonication parameters is lower than that of unfilled glass fiber/polyester composites immersed in distilled and seawater. Nano-clay filled GF/polyester composites showed an improvement in impact resistance under dry, distilled and seawater conditions with all sonication parameters. Among the used sonication parameters; time of 2 hours, amplitude of 40% and 0.5 cycle was found as the best parameter which resulted in the maximum enhancement in impact resistance, due to the addition of nano-clay to GF/polyester, of 8.2%, 14% and 19.6% under dry, distilled water and seawater conditions, respectively. Nonlinear minimization approach was exploited using MAPLE commercial software in order to find the suitable fit to the models of Fick and Langmuir. Diffusion coefficients for different sonication times were computed.

Tensile Strength of Polyester Composites Reinforced with Thinner Buriti Fibers

2014 ◽  
Vol 775-776 ◽  
pp. 183-188 ◽  
Author(s):  
Sergio Neves Monteiro ◽  
Frederico Muylaert Margem ◽  
Giulio Rodrigues Altoé ◽  
Rômulo Leite Loiola ◽  
Michel Picanço Oliveira
Keyword(s):  
Tensile Strength ◽  
Volume Fraction ◽  
Environmental Concern ◽  
Natural Fibers ◽  
Palm Tree ◽  
Synthetic Fibers ◽  
Synthetic Materials ◽  
Mauritia Flexuosa ◽  
Polyester Matrix ◽  
Polyester Composites

The environmental concern is creating pressure for the substitution of energy intensive synthetic materials for natural and sustainable ones. Compared to synthetic fibers, natural fibers have shown advantages in technical aspects such as flexibility and toughness. So there is today a growing worldwide interest in the use of natural fibers. Buriti fiber extracted from the petiole of buriti palm tree (Mauritia flexuosa), presents some significant characteristic, but until now only few studies on buriti fiber were performed. This work aims to study the tensile strength of polyester composites reinforced with buriti fibers. This study was performed in relatively thinner fibers with diameters between 0.1 and 0.4 mm. Those fibers were incorporated into the polyester matrix with volume fraction from 0 to 30%. The fiber diameters were measured by a profile projector. After fracture the specimens were analyzed by scanning electron microscope (SEM). The results showed a sensible improvement in the mechanical properties. The SEM observation revealed the mechanism for this improvement.

Study on Formula for Glass Fiber/Microcellular Unsaturated Polyester Composites Preparation

2011 ◽  
Vol 233-235 ◽  
pp. 2595-2599 ◽  
Author(s):  
Xue Ni Zhao ◽  
Bin Zhou ◽  
Wu Yong Wan ◽  
Shan Qi Zeng ◽  
Wei Ren
Keyword(s):  
Tensile Strength ◽  
Glass Fiber ◽  
Fiber Length ◽  
Unsaturated Polyester ◽  
Curing Agent ◽  
Average Cell Size ◽  
Average Cell ◽  
Factors Affecting ◽  
Styrene Content ◽  
Polyester Composites

Formula for glass fiber/microcellular unsaturated polyester composites (GF/MCUP) using supersaturated gas technology was studied by the way of orthogonal experiment. The results showed that these factors affecting average cell size from strongly to weakly were styrene content, accelerant content, glass fiber length, curing agent and glass fiber content, respectively. The factors affecting average cell density from strongly to weakly were accelerant content, styrene content, glass fiber content, curing agent content and glass fiber length, respectively. Curing agent content was the major factor affecting impact strength of GF/MCUP. The factors revealed no obvious difference in affecting tensile strength. Under the optimizing processing condition, the average cell size of GF/MCUP was about 8 μm and the cell density was 1.19×109 cells/cm3. The 153.70 and 255.84 % increase in impact strength were gained over that of GF/UP and UP, respectively. The corresponding 20.24 and 82.51% increase in tensile strength-to-weight ratio were gained over that of GF/UP and UP, respectively.

Investigation on Effect of Varying Weight Percentage of Glass Fiber and Filler on the Properties of Glass Fiber-Cement- Polyester Composites

2020 ◽  
Vol 995 ◽  
pp. 117-122
Author(s):  
Phaneesh Shettigar ◽  
Manjunath Shettar ◽  
Rao U. Sathish ◽  
C.S. Suhas Kowshik ◽  
M.C. Gowrishankar
Keyword(s):  
Tensile Strength ◽  
Flexural Strength ◽  
Glass Fiber ◽  
Polyester Resin ◽  
Tensile Load ◽  
Weight Percentage ◽  
Pull Out ◽  
The Matrix ◽  
Polyester Composites

In this research, the results of different weight percentage of glass fiber (30, 40 & 50), cement (0, 3 & 6) and polyester resin (70, 60 & 50), on the properties of glass fiber-cement-polyester composites are investigated. The specimens are prepared by hand lay-up technique. All the specimens are tested for tensile and flexural strength as per ASTM standards. Results showed that escalation in glass fiber wt.% improved the tensile strength (by 9% at 40 wt.% and 17% at 50 wt.%) and flexural strength (by 10% at 40 wt.% and 16.5% at 50 wt.%). Whereas an increase in cement weight percentage decreases tensile strength and increases flexural strength. The failure of the sample is due to glass fiber pull out and rupture of the matrix, under tensile load.

Tensile Strength of Polyester Composites Reinforced with Thinner Buriti Fibers

2014 ◽  
Vol 805 ◽  
pp. 466-471
Author(s):  
Sergio Neves Monteiro ◽  
Frederico Muylaert Margem ◽  
Giulio Rodrigues Altoé ◽  
Rômulo Leite Loiola ◽  
Michel Picanço Oliveira
Keyword(s):  
Tensile Strength ◽  
Volume Fraction ◽  
Environmental Concern ◽  
Natural Fibers ◽  
Palm Tree ◽  
Synthetic Fibers ◽  
Synthetic Materials ◽  
Mauritia Flexuosa ◽  
Polyester Matrix ◽  
Polyester Composites

The environmental concern is creating pressure for the substitution of energy intensive synthetic materials for natural and sustainable ones. Compared to synthetic fibers, natural fibers have shown advantages in technical aspects such as flexibility and toughness. So there is today a growing worldwide interest in the use of natural fibers. Buriti fiber extracted from the petiole of buriti palm tree (Mauritia flexuosa), presents some significant characteristic, but until now only few studies on buriti fiber were performed. This work aims to study the tensile strength of polyester composites reinforced with buriti fibers. This study was performed in relatively thinner fibers with diameters between 0.1 and 0.4 mm. Those fibers were incorporated into the polyester matrix with volume fraction from 0 to 30%. The fiber diameters were measured by a profile projector. After fracture the specimens were analyzed by scanning electron microscope (SEM). The results showed a sensible improvement in the mechanical properties. The SEM observation revealed the mechanism for this improvement.

scholarly journals Influence of Fibre Parameters on Mechanical Properties of Sansevieria Cylindrica Polyester Composites

2020 ◽  
Vol 8 (4S4) ◽  
pp. 212-215
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Fibre Length ◽  
Curing Temperature ◽  
Weight Percentage ◽  
Increase With Increase ◽  
Composite Slabs ◽  
Polyester Composite ◽  
Polyester Matrix ◽  
Polyester Composites

The sansevieria cylindrica polyester composite slabs are made by compression molding technique using virgin fibres for varying fibre length ( 30 mm, 40 mm, 50 mm) and different weight percentage ( 20%wt, 30% wt, 40%wt, 50% wt ) under room curing temperature and their mechanical properties have been studied. The inclusion of sansevieria cylindrica fibre as reinforcement into polyester matrix improves the flexural and tensile strength till a certain weight percentage, then it decreases drastically by further addition of fibre. It is observed that the mechanical properties of the composites increase with increase in fibre length from 30mm to 40 mm and there is decrease in their strengths for fibre length of 50 mm.

scholarly journals Experimental Investigation on Mechanical Properties of A/GFRP, B/GFRP and AB/GFRP Polymer Composites

2022 ◽  
Vol 58 (4) ◽  
pp. 28-36
Author(s):  
Velmurugan Natarajan ◽  
Ravi Samraj ◽  
Jayabalakrishnan Duraivelu ◽  
Prabhu Paulraj
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Glass Fiber ◽  
Polymer Composites ◽  
Fiber Reinforced ◽  
Gfrp Composites ◽  
Glass Fiber Reinforced ◽  
Structural Applications ◽  
Polyester Composites

This study aims to reveal the consequence of thickness reinforcement on Fiber Laminates (Polyester Resin, Glass Fiber, Aluminum, and Bentonite) and to see if it can enhance the mechanical properties and resistance of laminates. Glass fiber reinforced polymer composites have recently been used in automotive, aerospace, and structural applications where they will be safe for the application s unique shape. Hand layup was used to fabricate three different combinations, including Aluminium /Glass fiber reinforced polyester composites (A/GFRP), Bentonite/Glass fiber reinforced polyester composites (B/GFRP), and Aluminium&Bentonie/Glass fiber reinforced polyester composites (AB/GFRP). Results revealed that AB/GFRP had better tensile strength, flexural strength, and hardness than GFRP and A/GFRP. Under normal atmospheric conditions and after exposure to boiling water, hybrid Aluminium&Bentonite and glass fiber-reinforced nanocomposites have improved mechanical properties than other hybrid composites. After exposure to temperature, the flexural strength, tensile strength and stiffness of AB/GFRP Composites are 40 % higher than A/GFRP and 17.44% higher than B/GFRP Composites.

Research on Glass Fiber/Microcellular Unsaturated Polyester Composites

2011 ◽  
Vol 52-54 ◽  
pp. 1237-1242
Author(s):  
Xue Ni Zhao ◽  
Wu Yong Wan ◽  
Wei Ren ◽  
Shan Qi Zeng ◽  
Jing Lei ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Glass Fiber ◽  
Cell Size ◽  
Cell Density ◽  
Unsaturated Polyester ◽  
Processing Condition ◽  
Average Cell Size ◽  
Average Cell ◽  
Polyester Composites

Glass fiber/microcellular unsaturated polyester composites (GF/MCUP) were prepared using the supersaturated gas technology. Technological process included three stages. The effect of processing parameters on average cell size, cell density, impact strength and tensile strength was investigaed by orthogonal experiment. The results indicated that the major factor affecting them was the temperature in stageⅡ(T2). Under the optimizing processing condition, the average cell size of GF/MCUP was about 8 μm and the cell density was 1.57×109 cells/cm3. It was found that impact strength of GF/MCUP increased 88.81 and 188.12 % than that of glass fiber/unsaturated polyester composites (GF/UP) and unsaturated polyester plastics (UP), respectively. The corresponding 16.56 and 69.25 % increase in tensile strength-to-weight ratio were gained over that of GF/UP and UP, respectively.

Sign in / Sign up

Export Citation Format

Share Document