scholarly journals Fabrication, Mechanical Characterization and Interfacial Properties of Okra Fiber Reinforced Polypropylene Composites

2018 ◽  
Vol 3 (1) ◽  
pp. 18-31 ◽  
Author(s):  
A.N.M. Masudur Rahman ◽  
Shah Alimuzzaman ◽  
Ruhul Amin Khan ◽  
Md. Ershad Khan ◽  
Sheikh Nazmul Hoque
Keyword(s):  
Mechanical Properties ◽  
Bending Strength ◽  
Matrix Material ◽  
Tensile Modulus ◽  
Fiber Composites ◽  
Interfacial Property ◽  
Soil Medium ◽  
Polypropylene Composites ◽  
Bending Modulus ◽  
Okra Fiber

In this study, an attempt has been taken to manufacture okra fiber (OF) composites with varying the fiber content ranging from 25-65% on total weight of the composites and polypropylene (PP) was preferred as matrix material. To fabricate the composites untreated and mercerized fibers were selected. A systematic study was done to observe the mechanical behaviors of the composites such as tensile, impact and bending properties. It was found that treated (mercerized) fiber composites exhibited improved mechanical properties than that of untreated fiber composites. Maximum tensile strength (TS) and bending strength (BS) was examined 38.5 MPa and 72.5 MPa respectively, whereas the highest tensile modulus (TM) and bending modulus (BM) was observed 675 MPa and 5.4 GPa respectively. The optimum impact strength (IS) and hardness value was found to be 22.87 KJ/m2 and 97 (Shore-A) for mercerized fiber composites containing 45% fiber. The composite samples were exposed to different intensities of γ radiation (2.5 kGy–10.0 kGy) and found significant improvement in the mechanical properties up to 5.0 kGy dose. Water absorption, degradation properties due to heat and soil medium of the composites were also performed. The interfacial property was examined by Microscopic Projector and Scanning Electron Microscope (SEM) and found that the interfacial bonding between matrix material and fiber was enhanced due to the treatment of fibers which authenticate the found mechanical characteristics of the composites.

scholarly journals Mechanical, Degradation and Water Uptake Properties of Fabric Reinforced Polypropylene Based Composites: Effect of Alkali on Composites

Fibers ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 94 ◽  
Author(s):  
Mohammad Bellal Hoque ◽  
Solaiman ◽  
A.B.M. Hafizul Alam ◽  
Hasan Mahmud ◽  
Asiqun Nobi
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Bending Strength ◽  
Matrix Material ◽  
Tensile Modulus ◽  
Mechanical Degradation ◽  
Bending Modulus ◽  
Alkali Solutions ◽  
Polypropylene Sheet ◽  
Water Absorption Test

In this study, a fabric was manufactured consisting of 50% pineapple, 25% jute and 25% cotton fibers by weight, to make composites using polypropylene (PP) as a matrix material. We used compression molding technique, which kept 30% of the fabric content by total weight as the composite. The tensile strength (TS), tensile modulus (TM), elongation break (Eb%), bending strength (BS) and bending modulus (BM) were investigated. From analyzed data, it was found that the composite values of TS, TM, Eb%, BS and BM were 58 MPa, 867 MPa, 22.38%, 42 MPa and 495 MPa, respectively. The TS, TM, Eb%, BS and BM of the neat polypropylene sheet were 28 MPa, 338 MPa, 75%, 20 MPa and 230 MPa, respectively. Due to fabric reinforcement, composite values for TS, TM, BS and BM increased 107%, 156%, 110% and 115%, respectively in comparison with a polypropylene sheet. A water absorption test was performed by dipping the composite samples in deionized water and it was noticed that water absorption was lower for PP-based composites. For investigating the effect of alkali, we sunk the composites in a solution containing 3%, 5% and 7% sodium hydroxide alkali solutions by weight, for 60 min after which their mechanical properties were investigated. A degradation test was carried out by putting the samples in soil for six months and it was noticed that the mechanical properties of fabric/PP composites degraded slowly.

Fabrication and Characterization of E-Glass Fiber Reinforced Unsaturated Polyester Resin Based Composite Materials

2019 ◽  
Vol 24 ◽  
pp. 1-7
Author(s):  
Md. Naimul Islam ◽  
Harun Ar-Rashid ◽  
Farhana Islam ◽  
Nanda Karmaker ◽  
Farjana A. Koly ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Bending Strength ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Glass Fibers ◽  
Tensile Modulus ◽  
Unsaturated Polyester Resin ◽  
Fiber Reinforced ◽  
Bending Modulus

E-glass fiber mat reinforced Unsaturated Polyester Resin (UPR)-based composites were fabricated by conventional hand lay-up technique. The fiber content was varied from 5 to 50% by weight. Mechanical properties (tensile and bending) of the fabricated composites were investigated. The tensile strength (TS) of the 5% and 50% fiber reinforced composites was 32 MPa and 72 MPa, respectively. Similarly, tensile modulus, bending strength and bending modulus of the composites were increased by the increase of fiber loading. Interfacial properties of the composites were investigated by scanning electron microscopy (SEM) and the results revealed that the interfacial bond between fiber and matrix was excellent. Keywords: Unsaturated Polyester Resin, Mechanical Properties, E-glass Fibers, Composites, Polymer.

scholarly journals Short Jute Fiber Reinforced Polypropylene Composites: Effect of Nonhalogenated Fire Retardants

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Sk. Sharfuddin Chestee ◽  
Pinku Poddar ◽  
Tushar Kumar Sheel ◽  
Md. Mamunur Rashid ◽  
Ruhul A. Khan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bending Strength ◽  
Ignition Time ◽  
Tensile Modulus ◽  
Jute Fiber ◽  
Flame Height ◽  
Firing Time ◽  
Fire Retardants ◽  
Fiber Reinforced ◽  
Bending Modulus

Short jute fiber reinforced polypropylene (PP) composites were prepared using a single screw extrusion moulding. Jute fiber content in the composites is optimized with the extent of mechanical properties, and composites with 20% jute show higher mechanical properties. Dissimilar concentrations of several fire retardants (FRs), such as magnesium oxide (MO), aluminum oxide (AO), and phosphoric acid (PA), were used in the composites. The addition of MO, AO, and PA improved the fire retardancy properties (ignition time, flame height, and total firing time) of the composites. Ignition time for 30% MO, flame height for 30% PA, and total firing time for 20% MO content composites showed good results which were 8 sec, 1 inch, and 268 sec, respectively. Mechanical properties (tensile strength, tensile modulus, bending strength, bending modulus, and elongation at break), degradation properties (soil test, weathering test, and percentage of weight loss), and water uptake were studied.

Effect of Oxidizing Agents on Thermo-Mechanical Behavior of Jute Fabric-Reinforced Polypropylene Composites

2010 ◽  
Vol 123-125 ◽  
pp. 1127-1130 ◽  
Author(s):  
Jahangir A. Khan ◽  
Mubarak A. Khan ◽  
Nazia Rahman
Keyword(s):  
Bending Strength ◽  
Potassium Dichromate ◽  
Tensile Modulus ◽  
Polypropylene Composites ◽  
Oxidizing Agents ◽  
Bending Modulus ◽  
Hydrophilic Nature ◽  
Jute Fabrics ◽  
The Stability ◽  
Thermal Stability Of

Jute fabrics reinforced polypropylene (PP) composites were prepared by compression molding. Tensile strength (TS), tensile modulus (TM), bending strength (BS), bending modulus (BM) and impact strength (IS) of the composites were studied. To investigate the effect of oxidizing agents on the properties of the composites, jute fabrics were treated separately with the aqueous solutions of (0.005-0.05%w/v) potassium dichromate (K2Cr2O7) and (0.0025-0.04%w/v) potassium permanganate (KMnO4). The highest values of mechanical properties were reported for 0.02% K2Cr2O7 and 0.01% KMnO4 treatment. Thermal analysis of PP, treated and untreated jute fabrics and composites revealed that KMnO4 treatment lowers the thermal stability of the jute fabrics and composite. On the other hand, K2Cr2O7 treatment increases the stability of the fibers and composites. Hydrophilic nature of the treated composites was also reduced significantly.

Fabrication and Characterization of Pineapple Fiber-Reinforced Polypropylene Based Composites

2018 ◽  
Vol 21 ◽  
pp. 31-42 ◽  
Author(s):  
Mohammad Bellal Hoque ◽  
M. Sahadat Hossain ◽  
Abdul M. Nahid ◽  
Solaiman Bari ◽  
Ruhul A. Khan
Keyword(s):  
Bending Strength ◽  
Sodium Hydroxide Solution ◽  
Matrix Material ◽  
Group Analysis ◽  
Tensile Modulus ◽  
Elongation At Break ◽  
Bending Modulus ◽  
The Matrix ◽  
Functional Group Analysis

Pineapple Leaf Fiber (PALF)-reinforced polypropylene (PP) based composites were prepared successfully by conventional compression molding technique. Different percentages (25,30,35, 40 and 405% by weight) of fiber were used to prepare composites. Tensile Strength (TS), Tensile Modulus (TM), Elongation at Break (Eb %), Bending Strength (BS), Bending Modulus (BM) and Impact Strength (IS) were evaluated. The 45 wt% PALF/PP composite exhibited an increase of 132% TS, 412% TM, 155% BS, 265% BM, and 140% IS with respect to the matrix material (PP). Fourier Transform Infrared (FTIR) Spectroscopy was employed for functional group analysis of PALF/PP composites. For all percentages of fiber, the composites demonstrated lower water uptake. The fabricated composites were immersed in alkali solution (Sodium hydroxide solution, 3%, 5% and 7% by weight) for 60 min and showed low TS, TM and Eb% compared to control composites.

scholarly journals Improving the mechanical properties of polypropylene composites with coconut shell particles

2021 ◽  
Vol 30 ◽  
pp. 263498332110074
Author(s):  
Henry C Obasi ◽  
Uchechi C Mark ◽  
Udochukwu Mark
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Flexural Modulus ◽  
Filler Particle ◽  
Tensile Modulus ◽  
Coconut Shell ◽  
Polypropylene Composites ◽  
Increase With Increase ◽  
Pp Composites ◽  
Shell Particles

Conventional inorganic fillers are widely used as fillers for polymer-based composites. Though, their processing difficulties and cost have demanded the quest for credible alternatives of organic origin like coconut shell fillers. Dried shells of coconut were burnt, ground, and sifted to sizes of 63, 150, 300, and 425 µm. The ground coconut shell particles (CSP) were used as a filler to prepare polypropylene (PP) composites at filler contents of 0% to 40% via injection melt blending process to produce PP composite sheets. The effect of the filler particle size on the mechanical properties was investigated. The decrease in the size of filler (CSP) was found to improve the yield strength, tensile strength, tensile modulus, flexural strength, flexural modulus, and hardness of PP by 8.5 MPa, 15.75 MPa, 1.72 GPa, 7.5 MPa, 100 MPa, and 10.5 HR for 63 µm at 40%, respectively. However, the elongation at break and modulus of resilience of the PP composites were seen to increase with increase in the filler size. Scanning electron microscope analysis showed that fillers with 63 µm particle size had the best distribution and interaction with the PP matrix resulting in enhanced properties.

scholarly journals Effect of Gamma Radiation on the Mechanical Properties of Natural Fabric Reinforced Polyester Composites

2019 ◽  
Vol 27 (4(136)) ◽  
pp. 88-93
Author(s):  
K.Z.M. Abdul Motaleb ◽  
Md Shariful Islam ◽  
Rimvydas Milašius
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Gamma Radiation ◽  
Bending Strength ◽  
Polyester Resin ◽  
Radiation Doses ◽  
Elongation At Break ◽  
Bending Modulus ◽  
Polyester Composites

Two types of composites:(1) pineapple fabric reinforced polyester resin (Pineapple/PR) and (2) jute fabric reinforced polyester resin (Jute/PR) were prepared and the mechanical properties investigated for various gamma radiation doses ranging from 100-500 krad. Properties like tensile strength, Young’s modulus, elongation-at-break, bending strength, bending modulus and impact strength were increased significantly by 19%, 32%, 45%, 32%, 47% and 20%, respectively, at a dose of 300 krad for Pineapple/PR, and by 47%, 49%, 42%, 45%, 52% and 65%, respectively, at a dose of 200 krad for the Jute/PR composite in comparison to the non-irradiated composite. Gamma radiation improved the mechanical properties, but overdoses of radiation even caused a reduction in them.

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.

Enhancement of mechanical properties of composites made of calcium carbonate modified bamboo fibers and polypropylene

Holzforschung ◽  
2015 ◽  
Vol 69 (2) ◽  
pp. 215-221 ◽  
Author(s):  
Haitao Cheng ◽  
Jie Gao ◽  
Ge Wang ◽  
Sheldon Q. Shi ◽  
Shuangbao Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aqueous Solution ◽  
Tensile Strength ◽  
Tensile Modulus ◽  
Inorganic Materials ◽  
Polypropylene Composites ◽  
Fiber Treatment ◽  
Bamboo Fibers ◽  
Properties Of Composites

Abstract The work aimed at the improvement of the mechanical properties of bamboo fiber-polypropylene composites (BaFPPC) by treatment of the fibers with CaCO3 at various concentrations of the solution (0.05, 0.1, 0.2, and 0.3 mol l-1). CaCO3 particles were successfully deposited in situ to bamboo fibers by means of ionic reaction of Na2 CO3 and CaCl2 aqueous solution at various temperatures. Then BaFPPC were produced, and various tests on single fibers and the composites were performed. The compatibility between BaF and PP matrix was improved by the treatments. The crystallinity of inorganic materials was significantly affected by the reagent’s concentration. A 10.4% increase in tensile strength and a 16.7% increase in tensile modulus were observed after fiber treatment with CaCO3 at a concentration of 0.2 mol l-1.

Development of a Silicon-Infiltrated Silicon Carbide (SiSiC) Friction Layer by the Doctor-Blade Technique Using a Computer-Optimized Calculation for the Packing Density

2015 ◽  
Vol 825-826 ◽  
pp. 264-270
Author(s):  
Pascal Seffern ◽  
Lee Klein ◽  
Daniel Tischer ◽  
Antje Liersch
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Fracture Toughness ◽  
Bending Strength ◽  
Matrix Material ◽  
Particle Packing ◽  
Friction Layer ◽  
Solid Mixture ◽  
Particle Parameter ◽  
Tape Cast

This paper focuses on an iterative algorithm for setting and attaining particle packing densities by means of different concentrations of a matrix material. The mechanical properties of a product, such as fracture toughness, bending strength and thermal conductivity are directly dependent on the amount of matrix material present. A tape cast friction layer was developed, in order to investigate the dependence of the parameters of the RRSB distribution on concentration of matrix material. The results verify the calculation method of a solid mixture and show a linear dependence of the RRSB particle-parameternon the concentration of matrix material (SiC-content).

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