scholarly journals Influence of Chemical Treatment on Tensile and Flexural Properties of Sansevieria Cylindrica Polyester Composites

2019 ◽  
Vol 9 (2S2) ◽  
pp. 547-550
Keyword(s):  
Tensile Strength ◽  
Flexural Strength ◽  
Fibre Length ◽  
Natural Fibre ◽  
Curing Temperature ◽  
Weight Percentage ◽  
Chemical Treatments ◽  
Polyester Composite ◽  
Polyester Matrix ◽  
Performance Surface

The sansevieria cylindrica polyester composite slabs are made by compression molding technique using fibres treated with sodium hydroxide (NaOH), silane, calcium hydroxide (Ca(OH)2) and potassium permanganate (KMnO4) for optimum fibre length, optimum weight percentage and optimum curing temperature ( 40 mm, 40% wt, 600C) and their tensile 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. The main problem in natural fibre is water uptake which damages the fibre and thereby the strength is reduced. To improve the performance, surface modification of fibres with various chemical treatments is performed and it enhanced the properties to a greater extent. Ca(OH)2 treated composites showed higher tensile strength whereas silane treated composites showed lower tensile strength. KMnO4 treated composites showed higher flexural strength whereas silane treated composites showed lower flexural strength.

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 Mechanical Performance Analysis on Bamboo Fiber Reinforced Polyester Composite

2019 ◽  
Vol 9 (1S4) ◽  
pp. 833-835
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Mechanical Performance ◽  
Unsaturated Polyester ◽  
Natural Fibers ◽  
Bamboo Fiber ◽  
Weight Percentage ◽  
Polyester Composite ◽  
Composite Production

The present study narrates about the performance of bamboo fiber against polymer matrix. Among different natural fibers bamboo proved to be a potential ones for effective composite production. Based on this aspect this research carried out by using bamboo fiber of length 5mm in chopped form as reinforcement unsaturated polyester used as matrix. The studies were done by varying the bamboo fiber weight percentage as 20, 30 and 40% weight respectively. The prepared specimens are subjected to tensile strength, flexural strength and Impact strength studies. Based on the results obtained this composite suggested for suitable application.

scholarly journals Better Wettability of Pandanus Utilis Alkaline Treated Fibres Tead to Higher Tensile Strengths of Composites.

2021 ◽  
Author(s):  
Laurent L'Entete ◽  
Hareenanden Ramasawmy
Keyword(s):  
Tensile Strength ◽  
Composite Materials ◽  
Carbon Footprint ◽  
Fibre Length ◽  
Natural Fibre ◽  
Engineering Properties ◽  
Aggressive Treatment ◽  
High Carbon ◽  
Reinforcing Agent ◽  
Internal Angle

Abstract Composite materials made with synthetic fibres like E-glass, Kevlar or carbon have helped to provide a wide array of products to society with specific engineering properties. However, these materials have a high carbon footprint as well as being non-biodegradable. The use of natural fibre, as a substitution to these man-made fibres, has been studied and encouraging results are being obtained.In this study, the use of ‘Pandanus utilis’ fibre as a reinforcing agent in plastic was investigated with the aim of exploring specific properties such as the tensile strength of the fibre, its wettability and the effect of fibre length after treating the fibre with two different NaOH solutions. Results have shown that better reinforcement was obtained for the composites (11.10 ± 2.53MPa) with fibres subjected to a more aggressive treatment (2.5%NaOH for 2h) compared to the composite made with fibres having maximum tensile strength (168 ± 12MPa at 0.5% NaOH for 14h), due to a better hydrophilicity of the alkaline treated fibre (87.37° internal angle). Within the range of short chopped fibre length tested (6 to 15 mm), it was shown that there was a general decrease in the tensile strength of the composite.

Tensile Properties of Pineapple Leaf Fibre Reinforced Unsaturated Polyester Composites

2014 ◽  
Vol 695 ◽  
pp. 159-162 ◽  
Author(s):  
Januar Parlaungan Siregar ◽  
Tezara Cionita ◽  
Dandi Bachtiar ◽  
Mohd Ruzaimi Mat Rejab
Keyword(s):  
Tensile Strength ◽  
Tensile Properties ◽  
Fiber Length ◽  
Interfacial Adhesion ◽  
Unsaturated Polyester ◽  
Fibre Length ◽  
Tensile Modulus ◽  
Natural Fibre ◽  
Fibre Content ◽  
Polyester Composites

In recent years natural fibres such as sisal, jute, kenaf, pineapple leaf and banana fibres appear to be the outstanding materials which come as the viable and abundant substitute for the expensive and non-renewable synthethic fibre. This paper investigate the effect of fibre length and fibre content on the tensile properties of pineapple leaf fibre (PALF) reinforced unsaturated polyester (UP) composites. PALF as reinforcement agent will be employed with UP to form composite material specimens. The various of fiber length (<0.5, 0.5–1, and 1-2 mm) and fibre content (0, 5, 10 and 15 % by volume) in UP composite have been studied. The fabrication of PALF/UP composites used hand lay-up process, and the specimens for tensile test prepared follow the ASTM D3039. The result obtained from this study show that the 1-2 mm fibre length has higher tensile strength (42 MPa) and tensile modulus (1344 MPa) values compared to fibre length of <0.5 mm (30 MPa and 981 MPa) and 0.5-1 mm (35.40 MPa and 1020 MPa) respectively. Meanwhile, for the effect of various fibre content in study has shown that the increase of fibre content has decreased in tensile strength dan tensile modulus of composites. The increase of fibre content due to poor interfacial bonding and poor wetting of the fibre by unsaturated polyster. The treatment of natural fibre are suggested in order to improve the interfacial adhesion between natural fibre and the unsaturated polyester.

scholarly journals Effect of Reinforcement of Hydrophobic Grade Banana (Musa ornata) Bark Fiber on the Physicomechanical Properties of Isotactic Polypropylene

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Md. Mamunur Rashid ◽  
Sabrin A. Samad ◽  
M. A. Gafur ◽  
Md. Rakibul Qadir ◽  
A. M. Sarwaruddin Chowdhury
Keyword(s):  
Tensile Strength ◽  
Flexural Strength ◽  
Morphological Characterization ◽  
Morphological Properties ◽  
Hydrophobic Property ◽  
Polypropylene Composites ◽  
Chemical Treatments ◽  
Banana Fibers ◽  
Treated Fiber ◽  
Uptake Studies

This research studied the physicomechanical as well as morphological properties of alkali treated (NaOH and KMnO4) and untreated banana bark fiber (BBF) reinforced polypropylene composites. A detailed structural and morphological characterization was performed using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and mechanical properties testing (tensile strength, flexural strength, and microhardness). Chemical treatments improved the hydrophobic property of the fiber and it is found to be better for KMnO4treatment. Composites with 0, 5, 10, and 15 wt.% loadings were then compared for water uptake studies and revealed that KMnO4treated fiber composites absorb less water compared to others. KMnO4treatment with 15% fiber loading improved the tensile strength, flexural strength, and microhardness of the composites compared to raw and NaOH treated fiber loadings. TGA analysis also shows onset temperature at 400~500°C that is associated with the decomposition of the banana fibers constituents including lignin, cellulose, and hemicelluloses which suggests better thermomechanical stability. All of the values suggest that 15% KMnO4treated banana bark fiber (BBF)/PP composites were found to be better than those of the raw and NaOH treated ones.

Impact Toughness Evaluation of Coir Mat Reinforced Unsaturated Polyester Composite

2013 ◽  
Vol 765-767 ◽  
pp. 3125-3129 ◽  
Author(s):  
Jia Yao ◽  
Li Wei Jiang ◽  
Ping Han ◽  
Da Shuai Zhou
Keyword(s):  
Impact Toughness ◽  
Random Distribution ◽  
Unsaturated Polyester ◽  
Mechanical Index ◽  
Weight Percentage ◽  
Polyester Composite ◽  
Toughness Evaluation ◽  
Polyester Matrix ◽  
The Impact ◽  
Better Than

Coir mat reinforced unsaturated polyester composites have been prepared and the impact toughness has been researched, and the impact toughness model has been established based on the coir weight percentage content, the change laws of each mechanical index have been detailed, thus the optimal solutions have been put forward when the coir content was from 10 wt.% to 35 wt.%. The toughening effect of coir mat on unsaturated polyester matrix is remarkable, the non-woven needle mat of coir as the reinforced body for unsaturated polyester matrix is better than that of random distribution coir form.

scholarly journals Effects of Addition of Prosopis Juliflora Fiber on the Physical and Mechanical Properties of Wood Dust and Coir Pith Particle Reinforced Phenol Formaldehyde Hybrid Composite

2017 ◽  
Vol 13 (10) ◽  
pp. 6558-6562
Author(s):  
A. Athijayamani ◽  
A.Sujin Jose ◽  
K. Ramanathan ◽  
S. Sidhardhan
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Hybrid Composites ◽  
Phenol Formaldehyde ◽  
Physical And Mechanical Properties ◽  
Prosopis Juliflora ◽  
Wood Dust ◽  
Weight Percentage ◽  
Coir Pith

In this study, Wood Dust (WD)/Phenol Formaldehyde (PF) and Coir Pith (CP)/PF composites were hybridized with the Prosopis Juliflora Fiber (PJF) to obtain the hybrid composites. Composites were prepared by hand moulding technique. The weight percentage of particles and fibers are fixed in the ratio of 1:1. Mechanical properties such as tensile, flexural and impact strengths were evaluated as a function of the particle and fiber loadings. The results show that the properties of both the WD and CP composites obviously improved by the addition of the PJF. The improvement in WD/PF composites was obviously higher than the CP/PF composites for all loadings. The WD/PJF/PF hybrid composites exhibited better tensile (strength of 48.9 MPA and modulus of 1262.1 MPa, respectively), flexural (strength of 55.4 MPa and modulus of 1344.3 MPa, respectively), and impact properties (1.32 KJ/m2). 

Mechanical Properties of Reinforced Polymer Concrete with Three Types of Resin Systems

2022 ◽  
pp. 1-24
Author(s):  
Mostafa Hassani Niaki ◽  
Morteza Ghorbanzadeh Ahangari ◽  
Abdolhossein Fereidoon
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Polyurethane Foam ◽  
Basalt Fiber ◽  
Polymer Concrete ◽  
Weight Percentage ◽  
Reinforced Polymer

This paper studies the mechanical properties of polymer concrete (PC) with three types of resin systems. First, the effect of 0.5 wt% up to 3 wt% basalt fiber on the mechanical properties of a quaternary epoxy-based PC is investigated experimentally, and the best weight percentage of basalt fiber is obtained. The results show that adding basalt fiber to PC caused the greatest enhancement within 10% in compressive strength, 10% in flexural strength, 35% in the splitting tensile strength, and 315% in impact strength. In the next step, the effect of nanoclay particles on the mechanical properties of basalt fiber-reinforced PC (BFRPC) is analyzed experimentally. Nanoclays increase the compressive strength up to 7%, flexural strength up to 27%, and impact strength up to 260% but decrease the tensile strength of the PC. Field-emission scanning electron microscopy (FESEM) analysis is performed to study the fracture surface and morphology of various concrete specimens. In the last step, we consider the effect of two other different resin systems, rigid polyurethane and rigid polyurethane foam on the mechanical properties of reinforced polymer concrete. A comparison study presents that the epoxy PC has a higher specific strength than the polyurethane and ultra-lightweight polyurethane foam PC.

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.

Sign in / Sign up

Export Citation Format

Share Document