scholarly journals PENGARUH BAHAN PENGISI SILIKA DAN SERBUK TANDAN KOSONG SAWIT (STKS) TERMODIFIKASI TERHADAP KEKUATAN BENTUR DAN DAYA SERAP AIR KOMPOSIT HIBRID POLIESTER TIDAK JENUH

2016 ◽  
Vol 5 (2) ◽  
pp. 32-37
Author(s):  
Halimatuddahliana ◽  
Johan Evander Sirait ◽  
Fermadi Sirait
Keyword(s):  
Impact Strength ◽  
Chemical Modification ◽  
Water Adsorption ◽  
Impact Test ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Weight Ratio ◽  
Empty Fruit Bunches ◽  
The Matrix ◽  
Method Analysis

This research aims to determine the effect of palm oil empty fruit bunches (POEFB) powder and silica into the matrix of unsaturated polyester resin (UPR) and the influence of chemical modification OPEFB with using acetic acid 50% (v / v). In this study, (UPR) was mixed with silica and OPEFB to weight ratio (UPR: Silica: OPEFB) 80: 20: 0, 80: 15: 5, 80: 10: 10, 80: 5: 15, 80: 0: 20 by hand lay-up method. Analysis was done by impact test, and analysis of scanning electron microscopy (SEM). Results showed that impact strength at a ratio of 80: 5: 15 was higher than those without modification viz. 3622.5 J / m2. In this case the chemical modification has lowered OPEFB polarity so that the interfacial tencion between the filler with a matrix became low resulting in good interfacial interaction and adhesion between matrix and fille. Impact strength values ​​were supported by the results of SEM. From water adsorption test, composite with chemical modification showed low values as compared without modification indicating that modification has lowered the polarity of OPEFB.

scholarly journals INVESTIGATION OF MECHANICAL BEHAVIOR OF POLYMERIC FOAM MATERIALS REINFORCED BY OIL PALM EMPTY FRUIT BUNCHES (OPEFB) FIBERS DUE TO STATIC AND DYNAMIC LOADS

2019 ◽  
Vol 3 (1) ◽  
pp. 10
Author(s):  
Achmad Jusuf Zulfikar ◽  
Bobby Umroh ◽  
Muhammad Yusuf Rahmansyah Siahaan
Keyword(s):  
Composite Material ◽  
Mechanical Behavior ◽  
Modulus Of Elasticity ◽  
Impact Test ◽  
Unsaturated Polyester ◽  
Polymeric Composite ◽  
Polymer Composite Material ◽  
Empty Fruit Bunches ◽  
The Matrix ◽  
Manufacturing Techniques

Polymeric composite foam with EFB fiber reinforced is new material that can be utilized as an alternative engineering material. EFB fiber utilization becomes the center of subject in this research. Moreover, these composites are unique with the presence of cavities (foam) in the matrix of unsaturated polyester resin. It results a decrease in density of the material that formed, and obtain a thermoset polymer composite material lighter than any else similar type. The objective of this study is to obtain the best manufacturing techniques of composite material, the mechanical behavior of these materials due to tensile static loading and high strain rate impact, and the distribution of foam that occur in the material that formed as a result of blowing agent (BA) from the type of polyurethane (PU). In this research, the sample formed into standard specimen of testing, such as ASTM D638 for static tensile test, and impact test specimen. Mechanical’s behaviors that are obtained in this research are density, tensile strength, modulus of elasticity (E), the incident stress, and dynamic modulus of elasticity of the material. For static testing was performed according to standard ASTM D638 tensile and impact test using the Kolsky’s method. To know the distribution of foam that occur in the material, were observed using Scanning Electron Microscope instrument (SEM). To determine the stress distribution in this material, then conducted a computer simulation using Ansys. The best result obtained by the composition of this material based on material composition, which resin consumption can be reduced by the presence of BA as well as mechanical strength, good enough for molding. The best composition in this study will be used in subsequent studies, namely the design and manufacture of traffic cones from this material.

The Influence of Ultrasonic Energy on Chemical Treatment of Surface Properties and the Properties of Composites Made of Luffa Cylindrical Fiber-Polyester Resin

2008 ◽  
Vol 130 (4) ◽  
Author(s):  
E. Dilara Koçak
Keyword(s):  
Composite Structure ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Natural Fibers ◽  
Morphological Characteristics ◽  
Mechanical Tests ◽  
Cylindrical Fiber ◽  
The Matrix ◽  
Mechanical Performances ◽  
Properties Of Composites

Producing composites from natural fibers is known to be common. These fibers benefit from their mechanical performances, low density, and their biodegradability. However, it is necessary for the fibers to form adhesion in the matrix. Therefore, it is necessary to apply a chemical process to the surface of the fibers. In this study, four different processes in conventional and ultrasonic energies were applied on luffa cylindrical fibers. At the end of the application, a composite structure was formed on the fibers that were obtained by using unsaturated polyester resin. The changes in the characteristics of the composite structure were recorded by mechanical tests, Fourier transform infrared, X-ray diffractometer, and their morphological characteristics by means of scanning electron microscopy. Considering all the results, formic acid and acetic acid process results were found to adequately modify the fiber surfaces.

Manufacture of Sheets Using Post-Consumer Unsaturated Polyester Resin/Glass Fibre Composites

2002 ◽  
Vol 18 (2) ◽  
pp. 111-125 ◽  
Author(s):  
A. G. Pedroso ◽  
D. S. Rosa ◽  
T. D. Z. Atvars
Keyword(s):  
Glass Fibre ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Impact Resistance ◽  
Weight Ratio ◽  
High Volume ◽  
Volume Weight ◽  
Fibre Composites ◽  
Powdered Composite ◽  
Resin Curing

The storage of post-consumer unsaturated polyester/glass fibre composites impacts negatively on the environment due to its persistence (long lifetime of both the glass fibre and the resin) as well as the high volume/weight ratio of the residues. In this work we introduce a new approach for the recycling process of artefacts made of these polyester/glass fibre composites that involves the dispersion of the ground, not powdered, composite in raw polyester resin. Room temperature resin curing was employed. Flexural and impact tests were performed to optimize the processing conditions and the manufacturing process. Significant improvement in texture, flexural strength and impact resistance of sheets were achieved by pressing and heating the sheets at 40∞C and 50∞C during curing. The artefacts utilized in our work were post-consumer public telephone weather protector caps, which, in Brazil, are manufactured with a composite of unsaturated polyester/glass fibre. Although we used this specific artefact, the methodology can be extended to different types of post-consumer materials or industrial scraps.

Mechanical and Interfacial Characterization of Jute Fabrics Reinforced Unsaturated Polyester Resin Composites

2019 ◽  
Vol 25 ◽  
pp. 22-31 ◽  
Author(s):  
Farhana Islam ◽  
M. Naimul Islam ◽  
Shahirin Shahida ◽  
Harun Ar Rashid ◽  
Nanda Karmaker ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Bending Strength ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Tensile Modulus ◽  
Unsaturated Polyester Resin ◽  
Bending Modulus ◽  
The Matrix ◽  
Jute Fabrics

Jute fabrics reinforced Unsaturated Polyester Resin (UPR)-based composites were prepared by conventional hand lay-up technique. Different proportions (5 to 50% by weight) of fibre content was used in preparation of the composite. Tensile Strength (TS), Tensile Modulus (TM), Bending Modulus (BM), Bending Strength (BS), Impact Strength (IS) of the fabricated composites were studied. Upon each addition of fiber content in the matrix, mechanical properties of the composites were increased. The Tensile Strength (TS) of the 5% and 50% fiber reinforced composites was 18 MPa and 42 MPa respectively. Scanning Electron Microscopy (SEM) showed interfacial properties of the composites and it was revealed that the bond between fiber and matrix was excellent.

scholarly journals Characterization of Ceramic Waste Filled Unsaturated Polyester Resin

2020 ◽  
Vol 57 (3) ◽  
pp. 52-60
Author(s):  
Mohamed Farsane ◽  
Abdellah Anouar ◽  
Souad Chah ◽  
Miloud Bouzziri
Keyword(s):  
Water Absorption ◽  
Polyester Resin ◽  
Filler Content ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
Ceramic Waste ◽  
The Matrix ◽  
Polyester Matrix ◽  
Resin Formulation

In this study, the composites of ceramic waste filler polyester were produced with ceramic waste as the filler and unsaturated polyester resin as the matrix. Various weight of filler loads (particle size [180 �m) were used; 0, 28.5, 41 and 50 wt% in view to better understand the effect of filler content on the mechanical, thermal properties and water absorption of the composites. Additionally, Fourier transform infrared spectroscopy was used to characterize the samples, from the findings, it is noticed an increase in the level of porcelain powder decreased the flexural strength and Hardness and increased the density. The results of water absorption have shown the composites absorbs fewer water. Thermal degradation indicates that the composite is more resistant to temperature than unsaturated polyester matrix due to the effect of porcelain powder incorporated. Moreover, the results reveal an opportunity for using the ceramic waste as filler in unsaturated polyester resin formulation.

Impact and Thermal Properties of Unsaturated Polyester (UPR) Composites Filled with Empty Fruit Bunch Palm Oil (EFBPO) and Cellulose

2014 ◽  
Vol 896 ◽  
pp. 310-313 ◽  
Author(s):  
Elmer Surya ◽  
Michael ◽  
Halimatuddahliana ◽  
Maulida
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Palm Oil ◽  
Impact Test ◽  
Unsaturated Polyester ◽  
Empty Fruit Bunch ◽  
Infra Red ◽  
The Matrix ◽  
The Impact ◽  
Scanning Electron

In this research, the impact properties of unsaturated polyester (UPR) composites filled with empty fruit bunch palm oil (EFBPO) and cellulose were investigated. The composites were made by hand-lay up method by mixing UPR with the content of each fillers (EFBPO and cellulose) of 5,10,15,20 wt.%. The parameter which was carried out on the prepared samples was impact test. It was found that the addition of fillers to the matrix caused the impact strength of composites increased at 10% addition of EFBPO and 5% addition of cellulose. The results were confirmed by fourier transform infra-red (FTIR) and supported by thermogravimetric analysis (TGA) and scanning electron microscopy (SEM).

Preparation, Morphology and Thermal Properties of Rubber-Modified Polyester Resins

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
M O Munyati ◽  
P A Lovell
Keyword(s):  
Thermal Properties ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Matrix Material ◽  
Good Control ◽  
Resin Matrix ◽  
Scanning Calorimetry ◽  
Polyester Resins ◽  
The Matrix ◽  
Size And Morphology

AbstractThe preparation of polyester resin blends consisting of an unsaturated polyester resin matrix and rubbery particles comprising three radially-alternating glassy and rubbery layers is described. The morphology of the resin blends was examined by transmission electron microscopy (TEM) while thermal properties were investigated by differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA). The results show that the particles were prepared with good control of particle size and morphology. DMTA results showed no reduction in the Tg of the matrix whilst the shear modulus of modified materials was found to be lower than that of the matrix material.

scholarly journals A Comparative Study of Dispersion Techniques for Nanocomposite Made with Nanoclays and an Unsaturated Polyester Resin

2011 ◽  
Vol 2011 ◽  
pp. 1-12 ◽  
Author(s):  
Farida Bensadoun ◽  
Nadir Kchit ◽  
Catherine Billotte ◽  
François Trochu ◽  
Edu Ruiz
Keyword(s):  
Rheological Behavior ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
Liquid Composite Molding ◽  
Scanning Calorimetry ◽  
Polymer Resin ◽  
The Matrix ◽  
Shear Mixing ◽  
Mixing Method

Over the last few years, polymer/clay nanocomposites have been an area of intensive research due to their capacity to improve the properties of the polymer resin. These nanocharged polymers exhibit a complex rheological behavior due to their dispersed structure in the matrix. Thus, to gain fundamental understanding of nanocomposite dispersion, characterization of their internal structure and their rheological behavior is crucial. Such understanding is also key to determine the manufacturing conditions to produce these nanomaterials by liquid composite molding (LCM) process. This paper investigates the mix of nanoclays particles in an unsaturated polyester resin using three different dispersion techniques: manual mixing, sonication, and high shear mixing (HSM). This paper shows that the mixing method has a significant effect on the sample morphology. Rheology, scanning electron microscopy (SEM), and differential scanning calorimetry (DSC) characterization techniques were used to analyze the blends morphology and evaluate the nanoclays stacks/polymer matrix interaction. Several phenomena, such as shear thinning and premature polymer gelification, were notably observed.

scholarly journals Effect of Al2O3 on the Tensile and Impact Strength of Flax/Unsaturated Polyester Composite with Emphasis on Automobile Body Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Gebre Fenta Aynalem ◽  
Belete Sirahbizu
Keyword(s):  
Impact Strength ◽  
Polyester Resin ◽  
Natural Fiber ◽  
Resin Composite ◽  
Unsaturated Polyester ◽  
Fiber Material ◽  
Strength Properties ◽  
Unsaturated Polyester Resin ◽  
Molding Process ◽  
The Impact

This study has endeavored to develop an Al2O3-filled natural fiber reinforced polymer composite which is intended to substitute the most widely used synthetic E-glass fiber material. To attain the desired objective of the work, 0, 5, 10, and 15 wt% Al2O3-filled chopped flax/unsaturated polyester resin composite have been developed by the conventional hand-lay-up method followed by a compression molding process. Consequently, characterization and mechanical property tests are conducted based on the ASTM standard. The results revealed that both tensile and impact strength properties of the base chopped flax/unsaturated polyester resin composite are all affected due to the inclusion and variation of the content of Al2O3 in 15 and 25 wt% fiber loading cases. It has been noticed that a 39.06% increase in the ultimate tensile strength of the composite in 25/UPR-5 composition has been gained. The effect of Al2O3 on the impact strength of the base composite has also been analyzed and a 45% increase has been observed in 15/UPR-10 composition. The findings also witnessed that the newly developed composite can be applied to make automotive parts such as mud guard and engine undercover.

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