scholarly journals Hybrid Composites from Wheat Straw, Inorganic Filler, and Recycled Polypropylene: Morphology and Mechanical and Thermal Expansion Performance

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Min Yu ◽  
Runzhou Huang ◽  
Chunxia He ◽  
Qinglin Wu ◽  
Xueni Zhao
Keyword(s):  
Thermal Expansion ◽  
Fly Ash ◽  
Calcium Carbonate ◽  
Water Absorption ◽  
Wheat Straw ◽  
Hybrid Composites ◽  
Flexural Modulus ◽  
Inorganic Filler ◽  
Recycled Polypropylene ◽  
Inorganic Fillers

Reinforcing effect of hybrid filler including wheat straw (WS) and inorganic filler (heavy calcium carbonate, silicon dioxide, and fly ash) in recycled polypropylene (R-PP) has been investigated. The effects of individual filler (WS) and combined fillers (WS and inorganic filler) on morphological, mechanical, and thermal expansion and water absorption properties of hybrid composites were investigated. The flexural modulus and flexural strength were both reduced when reinforced with three kinds of inorganic fillers, respectively, which was possibly due to the poor interphase adhesion as observed in SEM. The high surface energy of heavy calcium carbonate due to its high acidic character provides an opportunity of better PP-heavy calcium carbonate interfacial interactions compared to PP-straw, PP-fly ash, and PP-SiO2interface. The water absorption at saturation increased markedly by introduction of WS in it. The hybrid composites from WS and inorganic fillers showed better water absorption compared to those WS/PP composites. The thermal expansion of composites decreased with the increase of WS loading. Heavy calcium and SiO2can obviously reduce the LCTE value of composite. At the 25% inorganic filler content, composites had the smallest LCTE values.

scholarly journals Effect of Coir Fiber and Inorganic Filler Hybridization on Innegra Fiber Reinforced Epoxy Polymer Composites: Physical and Mechanical Properties

2021 ◽  
Author(s):  
H M Kavya ◽  
Saravana Bavan ◽  
B Yogesha ◽  
Sanjay Mavinkere Rangappa ◽  
Suchart Siengchin ◽  
...  
Keyword(s):  
Fly Ash ◽  
Epoxy Polymer ◽  
Hybrid Composites ◽  
Testing Machine ◽  
Inorganic Filler ◽  
Coir Fiber ◽  
Mechanical Stirring ◽  
Micro Particles ◽  
Tic Nanoparticles ◽  
Laminar Shear

Abstract The present investigation is concentrated on the results of different fillers over the physical, mechanical, and thermal characteristics of the epoxy polymer. These epoxy hybrid composites were produced using mechanical-stirring assisted wet layup method with coir micro-particles, fly ash, Titanium Carbide (TiC) nanoparticles, and Innegra fabrics contains simultaneous considering mechanical stirring with a stirring rod. The tensile, flexural, and inter-laminar shear characteristics of fabricated epoxy hybrid composites were determined using a universal testing machine. After the reinforcement of fly ash and TiC nanoparticles offers the most remarkable improvement in tensile, flexural, and impact strength, about 2.84, 1.65, and 9.19 times compared with pure epoxy polymer. The differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA) showed the epoxy hybrid composites' enhanced thermal stability. The homogeneity of fillers dispersion in the epoxy polymer was observed from a scanning electron microscope (SEM). Keywords: Contact angle; Fly ash; Inter-laminar shear strength; Innegra Fabric; Tensile Strength; TiC nanoparticle

scholarly journals Hybrid green organic/inorganic filler polypropylene composites: Morphological study and mechanical performance investigations

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 710-721
Author(s):  
Mohammed T. Hayajneh ◽  
Faris M. AL-Oqla ◽  
Mu’ayyad M. Al-Shrida
Keyword(s):  
Mechanical Performance ◽  
Hybrid Composites ◽  
Flexural Modulus ◽  
Tensile Modulus ◽  
Inorganic Filler ◽  
Hybrid Filler ◽  
Polypropylene Composites ◽  
Polypropylene Matrix ◽  
Mechanical Performances ◽  
Flexural Tests

Abstract In this study, the morphological and mechanical performances of hybrid green organic and inorganic filler composites were investigated. Various hybrid reinforcements using natural waste fillers including lemon leaves and eggshells were utilized for the study. The tensile strength, tensile modulus, elongation to break, flexural strength, and flexural modulus were investigated for the composites with polypropylene matrix. The results revealed that eggshells composites had the best values for both tensile and flexural tests while lemon leaves composites had the lowest values. However, the hybrid filler (lemon leaves-eggshells) had intermediate values. The poor properties of lemon leaves were attributed to the agglomeration and weak bonding presented by the morphological analysis of the hybrid composites.

Effect of bentonite clay and polypropylene matrix on the properties of silk and glass fiber-reinforced hybrid composites

2019 ◽  
pp. 089270571987823 ◽  
Author(s):  
Md RH Mazumder ◽  
F Numera ◽  
A Al-Asif ◽  
M Hasan
Keyword(s):  
Thermal Stability ◽  
Tensile Strength ◽  
Impact Strength ◽  
Water Absorption ◽  
Glass Fiber ◽  
Young’S Modulus ◽  
Hybrid Composites ◽  
Young's Modulus ◽  
Flexural Modulus ◽  
Bentonite Clay

Present research investigates the effect of bentonite clay and polypropylene (PP) matrix on the properties of silk and glass fiber hybrid composites. Three types of composite were prepared with 10 wt% silk and fiber at 1:1 ratio using hot press machine. In two composites commercial and recycled PP were used as matrix, while in third composite bentonite clay was added to silk and glass-reinforced commercial PP. Mechanical (tensile, flexural, impact, and hardness) tests, water absorption test, and thermogravimetric analysis were subsequently conducted. Tensile strength, flexural modulus, and hardness decreased, whereas Young’s modulus, impact strength, water absorption, and thermal stability increased with the addition of bentonite clay. On the other hand, change of matrix from commercial PP to recycled PP increased Young’s modulus, flexural strength, impact strength, and thermal stability and decreased tensile strength, flexural modulus, and hardness.

scholarly journals Synergic effect of recycled cotton fabric and wood saw dust reinforced biodegradable polypropylene composites

2019 ◽  
Vol 54 (1) ◽  
pp. 21-30 ◽  
Author(s):  
MK Islam ◽  
A Sharif ◽  
M Hussain ◽  
I Hassan
Keyword(s):  
Thermal Stability ◽  
Flexural Strength ◽  
Water Absorption ◽  
Cotton Fabric ◽  
Moisture Absorption ◽  
Polymer Matrix Composites ◽  
Hybrid Composites ◽  
Flexural Modulus ◽  
Polypropylene Composites ◽  
Saw Dust

Hybrid polymer matrix composites of waste cotton fabric and wood saw dust reinforcements were studied with a view to recycling the wastes from garments and carpentry industries. Polymer composites with cotton fabric and wood-saw-dust reinforcements were fabricated using hot press machine. Their physical, thermal and mechanical behaviors were discussed in terms of moisture absorption, thermal stability, tensile strength, elastic modulus, flexural strength and flexural modulus. Compositional analyses of fibers, matrix and composites were carried out with FTIR spectroscopy. Experimental results revealed that tensile and flexural strength of the composites increased with cotton fabric reinforcement. On the other hand, with increasing wood saw dust strength decreased up to a certain limit and then increased again. Water absorption of the hybrid composites increased substantially with increasing natural filler contents. Maximum water absorption was observed in 20% fabric/wood-saw-dust reinforced polymer composite. Furthermore, TGA graphs suggest better thermal stability of the hybrid composites than that of pure polypropylene. Bangladesh J. Sci. Ind. Res.54(1), 21-30, 2019

scholarly journals Characterization of Hybrid Composites with Polyester Waste Fibers, Olive Root Fibers and Coir Pith Micro-Particles Using Mixture Design Analysis for Structural Applications

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2291
Author(s):  
Muhammad Rizwan Tufail ◽  
Hafsa Jamshaid ◽  
Rajesh Mishra ◽  
Uzair Hussain ◽  
Martin Tichy ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Thermal Expansion ◽  
Impact Strength ◽  
Flexural Strength ◽  
Water Absorption ◽  
Hybrid Composites ◽  
Linear Thermal Expansion ◽  
Fiber Glass ◽  
Coir Pith ◽  
Micro Particles

In the present work, hybrid composites were developed by using polyester waste fibers along with natural origin materials: olive root fibers and coir pitch filler. Such composite panels can be used as a potential alternative for fiber glass sunshade panels and room dividers in buildings. Hybrid composites were fabricated by mixing polyester waste fibers and olive root fibers in different ratios (0:100, 33:67, 67:33 and 100:0). Coir pith micro-particles with an average size of 312 d.nm were used as filler in the polyester matrix at three different levels (0%, 5%, and 10%) of the overall matrix weight. Mechanical properties, e.g., tensile strength, flexural strength and impact strength, thermal properties, e.g., coefficient of linear thermal expansion, thermo-gravimetric analysis (TGA) and environmental properties, e.g., water absorption, loss of density after exposure to weathering were characterized. For comparison purposes, a commercially available fiber glass sunshades sample was also investigated. Mixture design analysis was used to optimize the ratio of all components in the composite. Graphical comparison of experimental results using regression models showed a high degree of correlation. An optimized formulation of composite with an objective of maximization of tensile strength, flexural strength, impact strength and minimization of water absorption, density loss, as well as coefficient of linear thermal expansion, was determined at 70.83 wt%, 15.15 wt%, and 14.01 wt% of polyester waste fibers, olive root fibers and coir pith micro-fillers, respectively. Overall, it can be concluded that the developed hybrid composites from waste fibrous materials can be used as a promising alternative and a value-added application in buildings and construction purposes.

scholarly journals Characterisation of Wheat Straw Pellets Individually and in Combination with Cassava Starch or Calcium Carbonate under Various Compaction Conditions: Determination of Pellet Strength and Water Absorption Capacity

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4375
Author(s):  
Patryk Matkowski ◽  
Aleksander Lisowski ◽  
Adam Świętochowski
Keyword(s):  
Tensile Strength ◽  
Calcium Carbonate ◽  
Water Absorption ◽  
Wheat Straw ◽  
Elasticity Modulus ◽  
Cassava Starch ◽  
Optimal Conditions ◽  
Strength Parameters ◽  
Pellet Strength ◽  
Material Temperature

This study aimed to optimise the production conditions of wheat straw (WS) pellets and pellets with the additives of cassava starch (CS) or calcium carbonate (CC) based on the criteria of pellet strength and water absorption by crushed pellets. The pellets produced using a 2–10%-wt/wt additive ratio, material moisture of 10–30% w.b., die height of 66–86 mm, and material temperature of 78–108 °C were tested. The influence these factors on the strength parameters of pellets was different than on the water absorption by the crushed pellets. The pellets made of WS blended with CC additive were characterised by better strength parameters and the compressed pellets were characterised by better water absorption than those with CS. High and positive correlation among specific pellet compression work, elasticity modulus for pellet compression, and tensile strength values were observed. As the strength parameters of pellets showed high correlation with single pellet density, for the consistency of conclusions, the optimal conditions for pellet production were assumed based on the density. For optimal conditions at 4% wt/wt additive ratio, 23% w.b. material moisture, 78 mm die height, and 80 °C material temperature, the specific pellet compression work was 3.22 mJ·mm−2, elasticity modulus was 5.78 MPa, and maximum tensile strength of the pellets was 2.68 MPa; moreover, the water absorption by crushed pellets amounted to 2.60 g H2O·g−1 of dry matter.

scholarly journals Inorganic Fillers in Composite Gel Polymer Electrolytes for High-Performance Lithium and Non-Lithium Polymer Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 614
Author(s):  
Vo Pham Hoang Huy ◽  
Seongjoon So ◽  
Jaehyun Hur
Keyword(s):  
Polymer Electrolytes ◽  
High Performance ◽  
Gel Polymer Electrolyte ◽  
Inorganic Filler ◽  
Gel Polymer Electrolytes ◽  
Lithium Polymer Batteries ◽  
Conductivity Enhancement ◽  
Composite Gel ◽  
Inorganic Fillers ◽  
Historical Developments

Among the various types of polymer electrolytes, gel polymer electrolytes have been considered as promising electrolytes for high-performance lithium and non-lithium batteries. The introduction of inorganic fillers into the polymer-salt system of gel polymer electrolytes has emerged as an effective strategy to achieve high ionic conductivity and excellent interfacial contact with the electrode. In this review, the detailed roles of inorganic fillers in composite gel polymer electrolytes are presented based on their physical and electrochemical properties in lithium and non-lithium polymer batteries. First, we summarize the historical developments of gel polymer electrolytes. Then, a list of detailed fillers applied in gel polymer electrolytes is presented. Possible mechanisms of conductivity enhancement by the addition of inorganic fillers are discussed for each inorganic filler. Subsequently, inorganic filler/polymer composite electrolytes studied for use in various battery systems, including Li-, Na-, Mg-, and Zn-ion batteries, are discussed. Finally, the future perspectives and requirements of the current composite gel polymer electrolyte technologies are highlighted.

scholarly journals Improvement of Performance Profile of Acrylic Based Polyester Bio-Composites by Bast/Basalt Fibers Hybridization for Automotive Applications

2021 ◽  
Vol 5 (4) ◽  
pp. 100
Author(s):  
Anjum Saleem ◽  
Luisa Medina ◽  
Mikael Skrifvars
Keyword(s):  
Hybrid Composites ◽  
Flexural Modulus ◽  
Basalt Fiber ◽  
Fiber Composites ◽  
Fiber Reinforced ◽  
Basalt Fibers ◽  
Bast Fiber ◽  
Bast Fibers ◽  
Resin Impregnation ◽  
Structural Applications

New technologies in the automotive industry require lightweight, environment-friendly, and mechanically strong materials. Bast fibers such as kenaf, flax, and hemp reinforced polymers are frequently used composites in semi-structural applications in industry. However, the low mechanical properties of bast fibers limit the applications of these composites in structural applications. The work presented here aims to enhance the mechanical property profile of bast fiber reinforced acrylic-based polyester resin composites by hybridization with basalt fibers. The hybridization was studied in three resin forms, solution, dispersion, and a mixture of solution and dispersion resin forms. The composites were prepared by established processing methods such as carding, resin impregnation, and compression molding. The composites were characterized for their mechanical (tensile, flexural, and Charpy impact strength), thermal, and morphological properties. The mechanical performance of hybrid bast/basalt fiber composites was significantly improved compared to their respective bast fiber composites. For hybrid composites, the specific flexural modulus and strength were on an average about 21 and 19% higher, specific tensile modulus and strength about 31 and 16% higher, respectively, and the specific impact energy was 13% higher than bast fiber reinforced composites. The statistical significance of the results was analyzed using one-way analysis of variance.

scholarly journals Effects of water absorption on the mechanical properties of hybrid natural fibre/phenol formaldehyde composites

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sekar Sanjeevi ◽  
Vigneshwaran Shanmugam ◽  
Suresh Kumar ◽  
Velmurugan Ganesan ◽  
Gabriel Sas ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Water Absorption ◽  
Hybrid Composites ◽  
Phenol Formaldehyde ◽  
Natural Fibre ◽  
The Other ◽  
Fibre Reinforcement ◽  
Dry Conditions

AbstractThis investigation is carried out to understand the effects of water absorption on the mechanical properties of hybrid phenol formaldehyde (PF) composite fabricated with Areca Fine Fibres (AFFs) and Calotropis Gigantea Fibre (CGF). Hybrid CGF/AFF/PF composites were manufactured using the hand layup technique at varying weight percentages of fibre reinforcement (25, 35 and 45%). Hybrid composite having 35 wt.% showed better mechanical properties (tensile strength ca. 59 MPa, flexural strength ca. 73 MPa and impact strength 1.43 kJ/m2) under wet and dry conditions as compared to the other hybrid composites. In general, the inclusion of the fibres enhanced the mechanical properties of neat PF. Increase in the fibre content increased the water absorption, however, after 120 h of immersion, all the composites attained an equilibrium state.

Sign in / Sign up

Export Citation Format

Share Document