scholarly journals Mechanical Behaviour of Polypropylene And Human Hair Fibres And Polypropylene Reinforced Polymeric Composites

Author(s):  
Sanjay Choudhry ◽  
Bhawana Pandey

Bio fibres have recently become eye-catching to researchers, engineers and scientist as an alternative reinforcement for FRP (fibre reinforced polymer) composite. Due to their low cost, fairly good mechanical properties, high aspect strength .Three to four ton of human hair fibre wasted in India annually .These fibre pose an environmental challenge In order to find commercial application the wasted human hair fibre mixed with polypropylene. Polypropylene based composite are prepared using hair fibre obtained from human hair. Human hair fibres are mixed into polypropylene (PP) at 3,5,10 and 15 % by wt. using two roll mills. The composite are compression moulded at specific time and temperature. Polypropylene and hair fibre polymer reinforced composite have better flexural and impact strength than PP (Polypropylene) and lower the tensile strength of polypropylene and hair fibre polymer reinforced composite than (PP) polypropylene.

2018 ◽  
Vol 7 (2) ◽  
pp. 110-112
Author(s):  
Sasikumar Gnanasekaran ◽  
Sivasangari Ayyappan

Natural fibres namely sisal, jute, kenaf, hemp, abaca and banana are mainly used in industries for developing Natural fibres composites. They find many applications such as automobiles, furniture, packing and construction due to many merits such as their low cost, good mechanical properties, non-toxic, low weight, less damage to processing equipment, improved surface finish, abundant and renewable resources. The objective of this paper is to review the applications of various kenaf fibre reinforced polymer composites which will provide a base for further research in this area.


2021 ◽  
pp. 152808372110575
Author(s):  
Adnan Amjad ◽  
Aslina Anjang Ab Rahman ◽  
Habib Awais ◽  
Mohd Shukur Zainol Abidin ◽  
Junaid Khan

Composite holds great promise for future materials considering its advantages such as excellent strength, stiffness, lightweight, and cost-effectiveness. Due to rising environmental concerns, the research speed gradually changes from synthetic polymer composites to natural fibre reinforced polymer composites (NFRPCs). Natural fibres are believed a valuable and robust replacement to synthetic silicates and carbon-based fibres, along with biodegradability, recyclability, low cost, and eco-friendliness. But the incompatibility between natural fibre and polymer matrices and higher moisture absorption percentage of natural fibre limitise their applications. To overcome these flaws, surface treatment of natural fibre and nanofiller addition have become some of the most important aspects to improve the performance of NFRPCs. This review article provides the most recent development on the effect of different nanofiller addition and surface treatment on the mechanical, thermal, and wetting behaviour of NFRPCs. It concludes that the fibre surface treatment and nanofillers in natural fibre polymer composites positively affect mechanical, thermal and water absorption properties. A systematic understanding in this field covers advanced research basics to stimulate investigation for fabricating NFRPCs with excellent performance.


Glass fibre-reinforced polymer composites find numerous applications in today 's aggressive world because of their different benefits such as high wear resistance, strength to weight ratio and low cost. Particle fillers can be further enhanced with the added composite efficiency. Titanates are successfully used as polymer filler to achieve this. A number of these short-glass epoxy composites and the study of their wear behavior are included in current work. They are manufactured and characterized. It also outlines a technique for parametric analysis of the sliding wear behavior, based on Taguchi’s test-design approach


2001 ◽  
Vol 54 (4) ◽  
pp. 279-300 ◽  
Author(s):  
Joris Degrieck and ◽  
Wim Van Paepegem

This article presents a review of the major fatigue models and life time prediction methodologies for fibre-reinforced polymer composites, subjected to fatigue loadings. In this review, the fatigue models have been classified in three major categories: fatigue life models, which do not take into account the actual degradation mechanisms but use S-N curves or Goodman-type diagrams and introduce some sort of fatigue failure criterion; phenomenological models for residual stiffness/strength; and finally progressive damage models which use one or more damage variables related to measurable manifestations of damage (transverse matrix cracks, delamination size). Although this review does not pretend to be exhaustive, the most important models proposed during the last decades have been included, as well as the relevant equations upon which the respective models are based. This review article contains 141 references.


2021 ◽  
Vol 2129 (1) ◽  
pp. 012034
Author(s):  
Vinu Sivakumar ◽  
Martin Mattioni ◽  
Nawawi Chouw

Abstract In practical application, fibre reinforced polymer (FRP) technology is implemented as the outer jackets in structural elements such as column, beam and in automobile engineering as light weight components in the head liners of car, brake pads and energy. In civil engineering FRP is mainly used in the retrofitting technique against corrosion, in columns, piles and poles. The research aims to provide a recyclable, natural, low-cost energy absorption material capable of increasing the load bearing capacity of the structure by increasing the fabric layer. The study focuses on the finite element analysis (FEM) of the energy absorption characteristics of basalt fibre reinforced polymer epoxy tube (BFRPE) subjected to axial compression with varying BFRPE layers. The results also discuss the failure modes of the specimens using abaqus. Parameters such as the energy absorption, crush force efficiency (CFE) are discussed. Energy absorption is defined as the area under the load displacement and CFE is defined as the ratio of the mean load to that of the initial peak force. The test results indicate that as the number of layers increases the ultimate load and CFE of the tube also increases. Compared to flax fibre reinforced polymer the thickness of the basalt fibre is very less with better energy absorption.


2020 ◽  
Vol 2020 ◽  
pp. 1-27
Author(s):  
C. H. Lee ◽  
A. Khalina ◽  
S. H. Lee ◽  
Ming Liu

Natural fibres are a gift from nature that we still underutilise. They can be classified into several groups, and bast natural fibre reinforcement in polymer composites has the most promising performance, among others. However, numerous factors have reported influences on mechanical properties of the fibre-reinforced composite, including natural fibre retting processes. In this review, bast fibre retting process and the effect of enzymatic retting on the fibre and fibre-reinforced polymer composites have been discussed and reviewed for the latest research studies. All retting methods except chemical and mechanical retting processes are involving secretion of enzymes by bacteria or fungi under controlled (enzymatic retting) or random conditions (water and dew retting). Besides, enzymatic retting is claimed to have more environmentally friendly wastewater products, shorter retting period, and controllable fibre biochemical components under mild incubation conditions. This review comprehensively assesses the enzymatic retting process for producing high-quality bast fibre and will become a reference for future development on bast fibre-reinforced polymer composites.


Author(s):  
Richard Trask ◽  
Ian Bond ◽  
Chris Norris

The concept of self-healing materials has gained widespread acceptance in the research community. Over recent years a diverse array of bio-inspired self-healing concepts, from solid-state diffusion to liquid-phase healing in a broad range of engineering materials, embracing ceramics, polymers and fibre reinforced polymer composite materials have been proposed in the open literature. In this research study the liquid-phase healing of operational damage, namely impact damage, is being addressed. The challenge of self-healing advanced fibre reinforced polymer composites is ensuring healing success without degrading the host composite’s performance, a problem not encountered in the self-healing of generic polymeric systems. In the genre of self-healing fibre reinforced composite materials, autonomous healing has been undertaken by a healing medium already located within the damage zone and released through the damage site either passively or actively through human invention. This approach requires the ‘engineering’ control of the storage medium’s toughness for release and the development of bespoke resin chemistries to be compatible with the manufacturing route, to remain active whilst latent and then to recover full mechanical performance once a damage event occurs. This study has generated a proof of concept whereby the healing medium is only deployed to the damage site once a sensor has been triggered. In essence this study aims to develop stimuli triggered deployment of a healing medium held remotely in a storage reservoir to repair impact damage to a composite material. The principle of the concept is revolves around the ability of a reservoir to deliver a healing medium to a damage site via a network of vessels contained in the centerline of the composite laminate. A Labview controlled peristaltic pressure rig containing the reservoirs for the resin and hardener, their independent pumps, pressure gauges, control switches and indicators was developed. Through the application of an impact event successfully deliver and subsequent healing of the damage event was achieved showing the potential of this concept for minimising parasitic mass and maximising healing potential in fibre reinforced composite materials.


2014 ◽  
Vol 893 ◽  
pp. 271-274 ◽  
Author(s):  
B. Vijaya Ramnath ◽  
C. Vinodh Krishna ◽  
S. Karthik ◽  
K. Saravanan ◽  
V.M. Manickavasagam ◽  
...  

The interest in natural fibers has been rising in the past decade due to low cost and abundant availability. Though the composites made from artificial fibers possess superior properties when compared to natural fiber reinforced composites, their high cost makes it unviable in day-to-day applications. This paper is an evaluation of a pineapple fiber reinforced composite using epoxy resin as matrix. Glass fibers are provided as the outer layers to improve the surface finish and strength. Using hand lay-up method, fibers of pineapple are assembled in alternate layers of vertical and horizontal orientation. The flexural properties of the composite are determined. Three samples are tested and it is seen that there is no appreciable variation in the properties. The average break load is 1.29 KN and the deflection is 5.533 mm. The flexural strength is calculated as 78.63MPa.


Sign in / Sign up

Export Citation Format

Share Document