scholarly journals STUDY ON PREPARATION OF BAMBOO FIBER REINFORCED UNSATURATED POLYESTER RESIN "GREEN" COMPOSITES

2012 ◽  
Vol 15 (3) ◽  
pp. 5-14
Author(s):  
Thanh Duy Tran ◽  
Tai Tan Dang
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Unsaturated Polyester ◽  
Low Cost ◽  
Glass Fibers ◽  
Natural Fibers ◽  
Green Composite ◽  
Polyester Resins ◽  
Neat Polymer ◽  
Synthetic Fibers

Composite materials are usually made with organic matrixes reinforced by synthetic fillers, such as carbon or glass fibers.... But the high cost and environmental awareness of the synthetic fibers has limited their application. Meanwhile, natural fibers have been very attractive because they have been low cost, low density, eco-friendly, available in high quantities, renewable, biodegradable and shown excellent mechanical properties. In this study, green composite materials were prepared by using unsaturated polyester resins and bamboo fibers. The fibers were previously modified by chemical treatment and inserted into matrix in the role of the reinforcement. Some factors effecting to properties of products showed more advantages than modifier content were studied meticulously. As a result, composite products showed more advantages than neat polymer. For example, it does not only improve significantly mechanical properties but also becomes cheaper and friendlier with environment.

scholarly journals Studying the effect of reinforcing by fibers and particles on mechanical properties for polymer Matrix composite materials

2017 ◽  
Vol 1 (4) ◽  
Author(s):  
Ibrahim A. Atiyah
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Matrix Composite ◽  
Polymer Matrix ◽  
Volume Fraction ◽  
Unsaturated Polyester ◽  
Glass Fibers ◽  
Polymer Matrix Composite ◽  
Graphite Particles ◽  
Wide Range

The using of polymer matrix composite materials has found a wide range of applications in our modern day world. This is as a result of the combination of characteristics which are achieved by these materials. This work aimed on the preparation of polymeric-matrix composite material in order to improve its mechanical properties by using more than one type of reinforcement with different volume fraction values. This composite materials prepared from unsaturated polyester resin as a matrix, reinforced by E-glass fiber with (5%) volume fraction and graphite particles of (1%, 3%, 5%,7% and 10%) volume fractions, and study  the effect of these fillers on the  properties of polyester. The reinforcing by different types of materials with different values of volume fraction led to improve the mechanical properties (i.e. tensile strength, modules of elasticity and hardness) significantly, because of the contribution of both graphite particles and glass fibers to bear the applied load, also due to the high hardness graphite particles  

scholarly journals Rush Fibers Reinforced Adobe for Sustainable Building

2020 ◽  
Vol 9 (1) ◽  
pp. 2304-2310
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Low Cost ◽  
Low Density ◽  
Energy Materials ◽  
Plant Fibers ◽  
Sustainable Building ◽  
Synthetic Fibers ◽  
Glass Carbon ◽  
Raw Earth

Little consume energy materials have recently received increased attention as an ecological and sustainable alternative. We propose to study a building approach with raw earth (adobe) combined with plant fibers. The latter used as reinforcement in composite materials have specific competitive mechanical properties compared to those of synthetic fibers (glass, carbon, ...) and are an environmentally friendly alternative to these fibers because of their low cost, low density, biodegradability and availability. We describe adobe stabilization and reinforcement process with treated rush fibers. We introduce our approach to formulate an earth mortar allowing the making of blocks of adobe, intended for the construction of works such as walls, arches and domes.

Available Mechanical and Chemical Properties of Natural Fibers

2018 ◽  
pp. 110-136
Keyword(s):  
Mechanical Properties ◽  
Moisture Absorption ◽  
Natural Fiber ◽  
Low Cost ◽  
Natural Fibers ◽  
Chemical Properties ◽  
Low Energy ◽  
Synthetic Fibers ◽  
The Right ◽  
And Chemical Properties

Natural fibers are so attracting in comparison to synthetic fibers since they exhibit good properties like the low cost, good specific mechanical properties and their requirements of low energy during production. However, natural fibers hold some drawbacks which must be consider in comparison to the synthetic fibers like their high moisture absorption, low mechanical properties, heat resistance and durability and the variation in their prices and quality. In order to choose the suitable natural fiber for the selected application, their mechanical and chemical properties can be helpful for taking the right decision. In this chapter, a wide research is done in order to provide as much as possible the available mechanical and chemical properties of natural fibers of bast, leaf, seed, stalk, and wood categories from the most trusted publications. The specific mechanical properties of natural fibers are then calculated for a better comparison at the level of composites.

Mechanical & Thermal Properties of Sisal Epoxy/Banana Epoxy Composites - A Review

2015 ◽  
Vol 766-767 ◽  
pp. 173-177
Author(s):  
J.M. Prabhudass ◽  
K. Palanikumar
Keyword(s):  
Composite Materials ◽  
Natural Fiber ◽  
Low Cost ◽  
Rapid Development ◽  
Research Work ◽  
Natural Fibers ◽  
Industrial Applications ◽  
Synthetic Fibers ◽  
Banana Fibers ◽  
Reinforced Polymer

Composite materials are preferred in all engineering applications, nowadays, because of their superior properties over the traditional materials. Among Composite materials, Natural fiber reinforced polymer finds rapid development in Industrial applications and many areas of research. The main advantageous features of these composites are Renewability, Biodegradability and low cost. They are less dense and also easily available. These Natural fibers replace synthetic fibers in many important applications like Automobiles, Aerospace, etc. This paper reviews the research work carried on different types of Natural fibers reinforced polymer along with their preparation and properties, especially Sisal and Banana fibers.

Recycling of polypropylene and curaua fiber-based ecocomposites: Effect of reprocessing on mechanical properties

2021 ◽  
pp. 030932472199765
Author(s):  
Sistanley Jones Lima Bispo ◽  
Raimundo Carlos Silverio Freire Júnior ◽  
Joelton Fonseca Barbosa ◽  
Camila Cruz da Silva ◽  
Elmo Thiago Lins Cöuras Ford
Keyword(s):  
Mechanical Properties ◽  
Low Cost ◽  
Glass Fibers ◽  
Natural Fibers ◽  
Polypropylene Composites ◽  
Three Point Bending ◽  
Curaua Fibers ◽  
Plastic Parts ◽  
Mineral Fillers ◽  
Curauá Fiber

The polypropylene with load of reinforcement of curauá fiber (PP-curauá) is a compound developed to be applied in the process of injection of automotive plastic parts. Polypropylene composites reinforced with mineral fillers (talc) or glass fibers have been widely applied in this segment. However, natural fibers are an important alternative considering the aspects of sustainability, recyclability, abundance and low cost, when compared with glass fibers, and industrial talc. This study was prompted by the growing need for materials that meet the constant cycles of use, disposal and reuse, and avoid the harmful effects on the environment. The mechanical properties of a curaua fiber and polypropylene-based ecocomposite reprocessed one, three and five times were assessed, since reprocessing is known to change the strength of these materials. Pure polypropylene (0%) and ecocomposites with 10 and 30 wt% of fiber were submitted to tensile and three-point bending tests. The results showed that polypropylene ecocomposites with 30% curaua fibers exhibited a higher modulus of elasticity. Moreover, reprocessing did not significantly affect the ecocomposite properties, demonstrating their viability for reuse.

Effect of surface modification on mechanical properties of filature silk waste and nanoclay filler-based polymer matrix composite

2021 ◽  
pp. 096739112110230
Author(s):  
Rahul Nair ◽  
Abhishek Bhattacharya ◽  
Papiya Bhowmik ◽  
Ravi Kant
Keyword(s):  
Mechanical Properties ◽  
Surface Modification ◽  
Tensile Properties ◽  
Low Cost ◽  
Natural Fibers ◽  
Tensile Modulus ◽  
Forming Process ◽  
Synthetic Fibers ◽  
Alternative Reinforcement ◽  
Effect Of Surface

Natural fibers have been attracting researchers and engineers as an alternative reinforcement of synthetic fibers in polymer composites due to their low cost, availability from natural resources, satisfactory high modulus and tensile strength, and biodegradability. Filature silk waste (FSW) is the remnant part of the cocoons which is produced during the silk forming process. The current study focuses on the comparison of tensile properties between untreated filature silk waste reinforced epoxy-based composite (UTFSWREC), 2 wt% alkali-treated filature silk waste reinforced epoxy-based composites (TFSWREC) and 2 wt% alkali-treated filature silk waste reinforced epoxy nanocomposites (TFSWRENC). The tensile properties showed that Young’s modulus of composites increases with surface modification of fiber and further enhances with nanoclay filler. TFSWREC and TFSWRENC displayed a higher tensile modulus than UTFSWREC. Scanning Electron Microscopy (SEM) showed the removal of the sericin layer from the surface of fiber, which resulted in the separation of fibrils and further resulted in the enhancement of the mechanical properties. FTIR analysis confirmed that intermolecular bonding improves with the chemical treatment and further refined with nanoclay filler addition.

scholarly journals Techniques for Modelling and Optimizing the Mechanical Properties of Natural Fiber Composites: A Review

Fibers ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 6
Author(s):  
Timothy K. Mulenga ◽  
Albert U. Ude ◽  
Chinnasamy Vivekanandhan
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Natural Fiber ◽  
Natural Fibers ◽  
Fiber Composites ◽  
Computational Techniques ◽  
Natural Fiber Composites ◽  
Synthetic Fibers ◽  
Reinforced Composite ◽  
And Performance

The study of natural fiber-based composites through the use of computational techniques for modelling and optimizing their properties has emerged as a fast-growing approach in recent years. Ecological concerns associated with synthetic fibers have made the utilisation of natural fibers as a reinforcing material in composites a popular approach. Computational techniques have become an important tool in the hands of many researchers to model and analyze the characteristics that influence the mechanical properties of natural fiber composites. This recent trend has led to the development of many advanced computational techniques and software for a profound understanding of the characteristics and performance behavior of composite materials reinforced with natural fibers. The large variations in the characteristics of natural fiber-based composites present a great challenge, which has led to the development of many computational techniques for composite materials analysis. This review seeks to infer, from conventional to contemporary sources, the computational techniques used in modelling, analyzing, and optimizing the mechanical characteristics of natural fiber reinforced composite materials.

scholarly journals EFFECT OF SAWDUST VOLUME ON MECHANICAL PROPERTIES OF COMPOSITE MATERIAL

2018 ◽  
Vol 18 (3) ◽  
pp. 300-305
Author(s):  
A. G. Dyachenko ◽  
T. P. Savostina ◽  
B. I. Saed
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Water Treatment ◽  
Room Temperature ◽  
Treatment Time ◽  
Unsaturated Polyester ◽  
Polymer Fibers ◽  
Polyester Resins ◽  
Wood Component ◽  
Compression Resistance

Introduction. Generation of composite materials with addition of sawdust is considered. The wood component of the composites is treated with water to enhance the surface roughness. This increases the contact area resulting in intensifying the sawdust – polymer fibers interaction. The work objective is to study the possibility of strengthening composites obtained from sawdust.Materials and Methods. Samples are made of composite materials based on the unsaturated polyester resins, reinforced with wood chips. Water treatment was carried out at room temperature for 2, 4, 6 and 8 days. Then the samples were tested for bending and compression.Research Results. As a result of testing the samples, changes in their  mechanical  properties  were  recorded.  It  is  determined how the bending and compression resistance depends on the water treatment time. Graphs that reflect these dependences are constructed.Discussion and Conclusions. After water treatment, the composites reinforced with sawdust show a higher resistance to bending. This is due to the increased roughness of the sawdust surface and, as a consequence, to the extension of the surface area adhesion with the composite base. Besides, the water treatment enhances the specimen resistance under compression. The samples created on the basis of large sawdust come into particular prominence. This is due to the formation of holes on the sawdust surface which also enhances the adhesion between them and the composite polymer base. 

Mechanical Properties of a Composite of Gypsum Reinforced with Caroá Fiber and PVAc

2019 ◽  
Vol 958 ◽  
pp. 57-61
Author(s):  
Edpo Ferreira Santos ◽  
Aoliabe Pedro da Silva ◽  
Nelson Cárdenas Olivier ◽  
Alessandra Félix da Costa Pereira ◽  
Alan Christie da Silva Dantas
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Mechanical Strength ◽  
Low Cost ◽  
Natural Fibers ◽  
Building Industry ◽  
New Materials ◽  
Bending Tests ◽  
Northeast Region ◽  
Fiber Size

The Development of new materials for building industry is a necessary issue to promote sustainability. Gypsum is an important low cost material very abundant in the northeast region of Brazil. Its physical properties make it an interesting material to form composite materials. This work presents a study of gypsum reinforced with Caroá (neoglasiovia variegate) natural fibers, where different amounts of fibers (1, 2, and 3%) were added into gypsum matrix. Three different fiber sizes (5, 10, and 20mm) were used to evaluate the effect of fiber size on the properties. PVAc was added in order to enhance the interactions between matrix and fibers. Mechanical strength was characterized by compression and bending tests. The addition of 1% mass Caroá fibers leads to a slightly increase on the mechanical strength independently of fiber size.

scholarly journals Review of Hybrid Fiber Based Composites with Nano Particles—Material Properties and Applications

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2088 ◽  
Author(s):  
Ayyappa Atmakuri ◽  
Arvydas Palevicius ◽  
Andrius Vilkauskas ◽  
Giedrius Janusas
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Material Properties ◽  
Chemical Treatment ◽  
Hybrid Composites ◽  
Natural Fibers ◽  
Nano Particles ◽  
Synthetic Fibers ◽  
Wide Range ◽  
Natural And Synthetic

The present review article provides an overview of the properties of various natural and synthetic fibers for the fabrication of pure natural composites and the combination of both natural/synthetic fibers-based hybrid composites, bio-based resins, various fabrication techniques, chemical and mechanical properties of fibers, the effect of chemical treatment and the influence of nanoparticles on the composite materials. Natural fibers are becoming more popular and attractive to researchers, with satisfactory results, due to their availability, ease of fabrication, cost-effectiveness, biodegradable nature and being environmentally friendly. Hybrid composites made up of two different natural fibers under the same matrix material are more popular than a combination of natural and synthetic fibers. Recent studies relevant to natural fiber hybrid composites have stated that, due to their biodegradability and the strength of individual fibers causing an impact on mechanical properties, flame retardancy and moisture absorption, natural fibers need an additional treatment like chemical treatment for the fibers to overcome those drawbacks and to enhance their better properties. The result of chemical treatment on composite material properties such as thermal, mechanical and moisture properties was studied. Researchers found that the positive influence on overall strength by placing the filler materials (nanoparticles) in the composite materials. Hybrid composites are one of the fields in polymer science that are attracting consideration for various lightweight applications in a wide range of industries such as automobile, construction, shipping, aviation, sports equipment, electronics, hardware and biomedical sectors.

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