MECHANICAL PROPERTIES (IMPACT STRENGTH) OF PINEAPPLE LEAF FIBRE REINFORCED POLYPROPYLENE COMPOSITES WITH VARIATION OF FIBRE LOADING AND TREATMENT PROCESS.

2018 ◽  
Vol 2 (4) ◽  
Author(s):  
SM Sapuan 1,2,,b ◽  
S. Izwan 1a
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Treatment Process ◽  
Volume Fraction ◽  
Thermoplastic Composite ◽  
Polypropylene Composites ◽  
Sem Micrograph ◽  
Good Potential ◽  
Fibre Loading ◽  
Scanning Electron

This paper presents the study of mechanical properties of short pineapple leaf fibre reinforced polypropylene composites. Pineapple leaf fibre (PALF) is one of them that have also good potential as reinforcement in thermoplastic composite. It is the objective of the current research to characterize the mechanical properties of treated and untreated composites of PALF reinforced polypropylene (PP) composite with four different volume fractions of pineapple leaf fiber (PALF) was fabricated, (5 vol%, 10 vol%, 15 vol% and 20 vol%).  The study of this PALF-PP composite demonstrates that bulk density of the composite decrease as the volume fraction increased. From the study about impact strength toward the fibre loadings, impact strength and energy absorbed increase as the volume fraction of fibre increased. Untreated PALF gives greater impact strength than treated PALF. From the experiment conducted on impact test and scanning electron microscopy experiment, untreated fibre produce greater impact and absorbed energy than treated fibre. Until 20% of PALF, result showed strength of the composite still rising to prove that 20% of fibre will fabricate finest fibre loading for the PALF-PP composite was observed from the scanning electron microscope (SEM) micrograph as an evidences on compatibility mechanical properties at the intersectional region of composite.

Tensile and Impact Strength of Coir Fibre Reinforced Polypropylene Composites: Effect of Different Temperature Conditions

2015 ◽  
Vol 763 ◽  
pp. 25-29
Author(s):  
Z. Salleh ◽  
Koay Mei Hyie ◽  
Syarifah Yunus ◽  
Y.M. Taib ◽  
M.N. Berhan ◽  
...  
Keyword(s):  
Low Temperature ◽  
Impact Strength ◽  
Tensile Properties ◽  
Volume Fraction ◽  
Hot Press ◽  
Impact Properties ◽  
Polypropylene Composites ◽  
Coir Fibre ◽  
Izod Impact ◽  
Fibre Loading

This study focuses on tensile properties and impact strength of coir fibre reinforced polypropylene composites under influences of fibre loading and various temperatures conditions. All samples were fabricated by using hot-press technique. Tensile and izod impact samples were prepared in accordance to the standard specifications as closely as possible. Three different ratios of fibre with matrix which were 10%, 20% and 30% were studied. The results revealed that 20% volume fraction of coir fibre demonstrated optimum tensile and impact properties. Significance reduction of impact strength under low temperature condition had been shown for all composites due to the brittleness of both fibre and matrix.

Effects of Quenching and Partitioning Process on Mechanical Properties of a Hot-Stamping Steel

2014 ◽  
Vol 788 ◽  
pp. 340-345 ◽  
Author(s):  
Ming Cheng ◽  
Hong Wu Song ◽  
Xin Li ◽  
Shi Hong Zhang ◽  
Ming Cheng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Treatment Process ◽  
Volume Fraction ◽  
Hot Stamping ◽  
Quenching Temperature ◽  
Quenching And Partitioning ◽  
22Mnb5 Steel ◽  
Partitioning Time ◽  
Hot Stamping Steel ◽  
Quenching And Partitioning Process

As a novel heat treatment process, Q&P (quenching and partitioning) process can be applied to enhance the ductility of steels. In this paper, the effects of different parameters of Q&P process (such as quenching temperature, partitioning temperature and partitioning time) on mechanical properties and microstructure of 22MnB5 steel was investigated. Analysis demonstrated that austenite can be stabilized via Q&P process and the volume fraction of retained austenite increases with the partitioning temperature and the partitioning time. The mechanical properties of the steel can be controlled to acquire the steel with excellent strength-ductility balance by Q&P process.

Influence of the Ageing Temperature on the Selected Mechanical Properties of the Ti6Al7Nb Alloy

2015 ◽  
Vol 641 ◽  
pp. 120-123 ◽  
Author(s):  
Robert Dąbrowski ◽  
Janusz Krawczyk ◽  
Edyta Rożniata
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Volume Fraction ◽  
Heating Temperature ◽  
Ageing Temperature ◽  
Sample Length ◽  
Two Phase ◽  
Β Phase ◽  
Α Phase ◽  
The Impact

The results of investigations of the influence of the ageing temperature on the selected mechanical properties i.e. hardness, fracture toughness (examined by the linear elastic fracture mechanics - KIctest) and impact strength (KV) of two-phase Ti6Al7Nb alloy, are presented in the hereby paper. Investigations were performed in the ageing temperatures range: 450÷650°C of the alloy previously undercooled from the selected heating temperature (in two-phase range) - equal 970°C. The heating temperature was determined on the basis of the dilatometric curve of the alloy heating in the system ΔL = f ((T), where: ΔL – change of the sample length, T – temperature, which was then differentiated in the system: ΔL/ΔT = f (T). The dilatometer L78 R.I.T.A of the LINSEIS Company was used in the tests. Investigations of the alloy microstructure in the ageing temperatures range 450÷650°C were carried out by means of the light microscope Axiovert 200 MAT of the Carl Zeiss Company. It was found that nearly equiaxial grains of the primary α phase occur in the microstructure (of the volume fraction app. 30%) and that the volume fraction of the new lamellar α phase - formed from the supersaturated β phase - increases. With an increase of the alloy ageing temperature, in the mentioned above range, a small increase of its hardness from 305 to 324HV as well as a decrease of stress intensity factor KIcfrom 67.3 to 48.6 MPa x m1/2and impact strength (KV) from 40.2 to 31.3 J. The impact tests results were supplemented by the fractographic documentation. It was found, that the characteristic features of the fractures of impact test samples do not exhibit essential differences in dependence of the ageing temperature and material hardness. The fractographic investigations were performed by means of the scanning electron microscope NovaNanoSEM 450.

scholarly journals Effects of Aspect Ratio and Loading on the Mechanical Properties of Prosopis Juliflora Fibre-reinforced Phenol Formaldehyde Composites

2017 ◽  
Vol 25 (0) ◽  
pp. 59-64 ◽  
Author(s):  
A. Sujin Jose ◽  
A. Athijayamani ◽  
K. Ramanathan ◽  
S. Sidhardhan
Keyword(s):  
Mechanical Properties ◽  
Phenol Formaldehyde ◽  
Prosopis Juliflora ◽  
Resin Matrix ◽  
Aspect Ratios ◽  
Reinforcing Agent ◽  
Fibre Loading ◽  
Fractured Surface ◽  
Scanning Electron ◽  
Good Agreement

In this paper, an attempt was made to use Prosopis juliflora fibres (PJFs) as a reinforcing agent for phenol formaldehyde (PF) composites. Mechanical properties of the composites were studied for various fibre aspect ratios (FAR) and fibre loadings (FL). A scanning electron microscope (SEM) was used to study the fractured surface of the composites. The peak range of mechanical properties was identified for composites with a FAR of 136 and fibre loading of 23.53 wt%. This study shows that the optimum FAR and fibre loading for PJFs were found to be 136 and 23.53 wt% in order to achieve good reinforcement with better mechanical properties in the PF resin matrix. Experimental results were observed to be in very good agreement with the theoretical.

scholarly journals Analysis of Morphological and Mechanical Behaviors of Bamboo Flour Reinforced Polypropylene Composites

2013 ◽  
Vol 13 (1) ◽  
pp. 95-100 ◽  
Author(s):  
Netra L Bhandari ◽  
Sabu Thomas ◽  
Chapal K Das ◽  
Rameshwar Adhikari
Keyword(s):  
Mechanical Properties ◽  
Tensile Testing ◽  
Mechanical Behaviors ◽  
Melt Mixing ◽  
Polypropylene Composites ◽  
Chemically Modified ◽  
Polypropylene Matrix ◽  
Pp Composites ◽  
Bamboo Flour ◽  
Scanning Electron

In this paper, the bamboo flour (BF) reinforced polypropylene (PP) composites were studied with special attention to morphology of the composites and the effectiveness of chemically modified fillers to improve their mechanical properties. The composites of polypropylene with neat bamboo flour (BF) and treated bamboo flour (TBF) in different proportions were prepared by melt mixing followed by compression molding. The samples were characterized by Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM), tensile testing and water absorption testing. The results show that the alkali treated BF is compatible with polypropylene matrix than the neat one as the effects are reflected in the morphological features of the composites and their tensile mechanical properties. Nepal Journal of Science and Technology Vol. 13, No. 1 (2012) 95-100 DOI: http://dx.doi.org/10.3126/njst.v13i1.7447

scholarly journals Simultaneous Improvement in the Tensile and Impact Strength of Polypropylene Reinforced by Graphene

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Li Juan
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Fracture Surface ◽  
Impact Strength ◽  
Melt Blending ◽  
Elongation At Break ◽  
Morphological Behavior ◽  
Scanning Electron

The nanocomposites of polypropylene (PP)/graphene were prepared by melt blending. The effects of the dosage of graphene on the flow and mechanical properties of the nanocomposites were investigated. The morphologies of fracture surfaces were characterized through scanning electron microscopy (SEM). The graphene simultaneous enhanced tensile and impact properties of nanocomposites. A 3.22% increase in tensile strength, 39.8% increase in elongation at break, and 26.7% increase in impact strength are achieved by addition of only 1 wt.% of graphene loading. The morphological behavior indicates the fracture surface of PP/graphene is more rough than that of pure PP.

Studies on Mechanical Properties of Discontinuous Glass Fiber/Continuous Glass Mat/Polypropylene Composite

2002 ◽  
Vol 10 (4) ◽  
pp. 299-306 ◽  
Author(s):  
Xiaodong Zhou ◽  
Qunfang Lin ◽  
Gance Dai
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Glass Fiber ◽  
Matrix Resin ◽  
Continuous Glass ◽  
Polypropylene Composites ◽  
Melt Index ◽  
Discontinuous Fiber ◽  
Glass Mat ◽  
The Impact

The mechanical properties of discontinuous glass fiber/continuous glass fiber mat/polypropylene composites were investigated. The mechanical properties increased with increasing areal weight of the continuous glass mat, whereas the suitable content of discontinuous fiber was also depended on the mat areal weight. The impact strength of composites initially decreased due to the addition of discontinuous glass fiber, but increased when the content of discontinuous glass fiber further increased. Comparisons between the 4 mm discontinuous fiber length and the 12 mm fiber showed that the longer discontinuous glass fiber was advantageous to the mechanical properties of composite system. The modification of the interfacial adhesion between reinforcements and matrix resin by using functionalized polypropylene played a significant role in improving the mechanical properties of the composites. But the impact strength decreased above 5% of MA-g-PP level (with respect to matrix resin). It was also found that using a matrix resin with a high melt index was beneficial impregnation with the mechanical properties improving accordingly.

Effect of various additives on mechanical properties of rice husk polypropylene (RHPP) composites

2012 ◽  
Vol 32 (3) ◽  
Author(s):  
Vinay Kumar ◽  
Manohar Singh Saini ◽  
Bikram Kishore Kanungo ◽  
Shishir Sinha
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Impact Strength ◽  
Rice Husk ◽  
Zirconium Oxide ◽  
Thermoplastic Composites ◽  
Polypropylene Composite ◽  
Polypropylene Composites

Abstract Abundantly available rice husk can be used with polypropylene for the development of thermoplastic composites. The present study deals with mechanical properties such as hardness and impact strength of rice husk polypropylene composites with the addition of talc, mica, CaCO3, wollastonite, and zirconium oxide. Maleic anhydride polypropylene was used as compatibilizer. Improvement in the hardness and impact strength of the composites was observed by the use of these additives. Possible applications of rice husk polypropylene composite are in building and automobile sectors.

Impact Strength and Hardness Properties of Banana Pseudo‐Stem Filled Unplastisized PVC Composites

2009 ◽  
Vol 5 (3) ◽  
pp. 277-282 ◽  
Author(s):  
E.S. Zainudin ◽  
S.M. Sapuan
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Polyvinyl Chloride ◽  
Human Body ◽  
High Resistance ◽  
Shape Change ◽  
Hardness Property ◽  
The Impact ◽  
Fibre Loading

Specific responses of thermoplastic components are required when they are subjected to impact conditions to minimize the damage in human body. Hardness property gives material, high resistance to various kinds of shape change when force is applied. In this study, mechanical properties such as impact strength and hardness of banana pseudo‐stem (BPS) unplastisized polyvinyl chloride (UPVC) composites were determined. It was found that fibre loading of BPS filler could enhance the properties of the impact strength and hardness of BPS/UPVC composites. The results on the addition of acrylic modifier to the composites have been discussed.

Micro-Structure and Mechanical Property of Polypropylene Composites Filled with Modified Attapulgite

2012 ◽  
Vol 174-177 ◽  
pp. 1384-1387
Author(s):  
Li Li Xu ◽  
Chang Hua Liu ◽  
Sheng Peng Liu
Keyword(s):  
Impact Strength ◽  
Chemical Structure ◽  
Interfacial Interaction ◽  
Micro Structure ◽  
Polypropylene Composites ◽  
Propyl Methacrylate ◽  
Izod Impact Strength ◽  
Izod Impact ◽  
Modified Attapulgite ◽  
Scanning Electron

Organified Attapulgites (AT) were grafted with 3-(trimethoxysilyl) propyl methacrylate ( KH570 ) on the surface of AT particles. Then, the modified AT (AT-g-KH570) and untreated AT particles were compounded with polypropylene (PP) to prepare PP/AT-g-KH570 and PP/AT composites respectively. The morphology, chemical structure and mechanical properties of the composites were also investigated with scanning electron microscopy (SEM), Fourier-transform infrared spectra (FTIR) and mechanical testing. The FTIR results showed that the KH570 is grafted on the AT particles. The tensile strength and izod impact strength of PP/AT-g-KH570 composites were improved obviously than those of PP/AT composites. The izod impact strength of PP/AT-g-KH570 composites show the maximum and was enhanced 50 % at 1 wt% loading, which contributed to homogeneous dispersion of particles and enhanced the interfacial interaction between modified AT particles and PP matrix.

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