scholarly journals Effect of Green Hybrid Fillers Loading on Mechanical and Thermal Properties of Vinyl Ester Composites

2021 ◽  
Author(s):  
Nagaprasad Nagaraj ◽  
VigneshVenkataraman Venkataraman ◽  
Karthik Babu NB ◽  
Stalin Balasubramaniam ◽  
Leta Tesfaye Jule ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Vinyl Ester ◽  
Low Cost ◽  
Filler Loading ◽  
Mechanical And Thermal Properties ◽  
Reinforced Composites ◽  
Hybrid Filler ◽  
Hybrid Form ◽  
Hybrid Fillers ◽  
The Matrix

Abstract The need of eco-friendly materials has been attracted due to renewability, abundance availability, low cost, and so on. Therefore, the search for bio fillers for the production of bio-based composite materials is gaining more and more attention in both academic and industry circles because it promotes sustainability. The present study represents the utilization of biomass solid waste in the hybrid form of tamarind seed and date seed powder into polymer reinforced composite which has been explored for the first time by a compression molding technique. These fillers are bio-waste that can be obtained at a minimal cost from renewable sources. An attempt has been made to use these hybrid fillers to reinforce with the matrix ranging from 0 to 50 wt.%, and their physical, mechanical, and thermal properties were investigated. In general, the inclusion of hybrid fillers increases mechanical properties, although the addition of hybrid fillers had only a minor impact on thermal properties. When compared to the pure vinyl ester resin, the hybrid fillers reinforced composites revealed a significant improvement in tensile, flexural, impact, and hardness properties, with improvements of 1.51 times, 1.44 times, 1.87 times, and 1.46 times respectively, at 10 wt.% filler loading. Filler matrix interaction of fractured mechanical testing samples was analyzed by scanning electron microscope. Based on the findings, hybrid filler reinforced composites may be suitable for applications where cost is a consideration and where minor compromises in thermal qualities are acceptable.

Influence of Carbon Nanotubes on Mechanical and Thermal Properties of Glass Fiber Reinforced Vinyl Ester Resin Composites

2011 ◽  
Vol 675-677 ◽  
pp. 419-422 ◽  
Author(s):  
Hong Yan Chen ◽  
Zhen Xing Kong ◽  
Ji Hui Wang
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Glass Fiber ◽  
Vinyl Ester ◽  
Decomposition Temperature ◽  
Mechanical And Thermal Properties ◽  
Glass Fiber Reinforced ◽  
The Matrix ◽  
Higher Temperature ◽  
Interlaminar Shear

Carbon nanotubes (CNTs) were incorporated into glass fiber/ vinyl ester resins composites to improve their mechanical and thermal properties, especially the interlaminar shear and longitudinal compressive strengths which are belong to the matrix-dominanted properties and much weaker than the fiber-dominated properties. In this study, a higher temperature initiator was added to improve the polymerization degree and raise the transition temperature (Tg). Mechanical testing indicated that by adding 0.4 wt% CNTs, the nano-filled composites attributed to 21%, 16%, 10%, and 8% improvement in interlaminar shear strength, compressive strength, tensile strength and flexural strength with respect to their counterparts without CNTs, respectively. Moreover, Thermogravimetric analysis (TGA) also exhibits approximately 14°C higher decomposition temperature than those of conventional composites.

scholarly journals Effect of cellulosic filler loading on mechanical and thermal properties of date palm seed/vinyl ester composites

2020 ◽  
Vol 147 ◽  
pp. 53-66 ◽  
Author(s):  
Nagaprasad Nagaraj ◽  
Stalin Balasubramaniam ◽  
Vignesh Venkataraman ◽  
Ravichandran Manickam ◽  
Rajini Nagarajan ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Vinyl Ester ◽  
Date Palm ◽  
Filler Loading ◽  
Mechanical And Thermal Properties

scholarly journals Investigation of Miscanthus and Sunflower Stalk Fiber-Reinforced Composites for Insulation Applications

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Arne Eschenhagen ◽  
Magdalena Raj ◽  
Natalia Rodrigo ◽  
Alejandro Zamora ◽  
Laurent Labonne ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Water Content ◽  
Low Cost ◽  
Fiber Reinforced Composites ◽  
Building Industry ◽  
Mechanical And Thermal Properties ◽  
Reinforced Composites ◽  
High Fiber ◽  
Lignocellulosic Fibers ◽  
Vegetable Fibers

The development of materials based on renewable and low-cost resources is today’s crucial interest for civil engineering. This work intends to investigate two new vegetable fibers as composite reinforcement for insulation application in the building industry. Miscanthus and sunflower stalk have mainly been selected for their high fiber content, low water content after harvesting, and availability. These criteria lead to good structural properties and allow a reduction in production and transportation costs. This study aims at demonstrating the feasibility to produce cohesive panels from these lignocellulosic fibers and their related interesting mechanical and thermal properties according to various natural binders.

scholarly journals Properties of cellulose reinforced composites: A review

2020 ◽  
Vol 39 (2) ◽  
pp. 386-402
Author(s):  
M.I. Ofem ◽  
E.B. Ene ◽  
P.A. Ubi ◽  
S.O. Odey ◽  
D.O. Fakorede
Keyword(s):  
Electron Microscopy ◽  
Thermal Properties ◽  
Common Source ◽  
Mechanical And Thermal Properties ◽  
Reinforced Composites ◽  
Cellulose Whiskers ◽  
Transmission Electron ◽  
The Matrix ◽  
Cellulose Whisker ◽  
Micro Organisms

This paper provides a review of cellulose, sources, extraction, molecular structure, cellulose whiskers, preparations, and morphology. The mechanical and thermal properties of cellulose reinforced composites are also discussed. Detail structure of Nano whiskers is also reported. As a renewable biomaterial, the most common source of cellulose is the plant. These plants include fruit fibers (coir), seed fibers (cotton), wood, leaf fibers (sisal), bast fibers (jute, kenaf, and hemp). Other sources of cellulose are from micro-organisms such as fungi, tunicates, bacteria, and algae. Cellulose whiskers are isolated from cellulose fibers by acid hydrolysis. Cellulose micro fibril structures are made of both amorphous and crystalline regions. The amorphous regions are vulnerable to hydrolysis by acids compared to the crystalline domains. Several techniques among which are Field Emission Scanning Electron Microscopy (FESEM), Transmission electron microscopy (TEM) and Atomic Force Microscopy (AFM) have been used to study the morphology of cellulose whiskers. An interface between cellulose whisker and matrix is a transition zone between the matrix and the cellulose whiskers. It plays an important role in the overall mechanical properties of the composites. A soft interface domain will yield a greater resistance to fracture, while the composite will be low in stiffness and strength. On the other hand, a stiffer interface domain may cause the composite to be strong and stiff and less resistant to fracture. The addition of CW into polymers matrices has little or no effect on the glass transition temperature, (Tg) except on the modification of CW. Keywords: Cellulose, whiskers, mechanical, thermal, properties, biomaterials

Synthesis and Characterization and Properties Comparison of Epoxy Filled Pennisetum typhoides (Jowar) Filler and Treated Sacharun offinarum (Sugar Cane) Fiber Reinforced Composites

2015 ◽  
Vol 51 ◽  
pp. 34-40
Author(s):  
U. Mahaboob Basha ◽  
D. Mohana Krishnudu ◽  
P. Hussain ◽  
K. Manohar Reddy ◽  
N. Karthikeyan ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Sugar Cane ◽  
Room Temperature ◽  
Fiber Reinforced Composites ◽  
Synthesis And Characterization ◽  
Mechanical And Thermal Properties ◽  
Reinforced Composites ◽  
Epoxy System ◽  
Pennisetum Typhoides ◽  
The Matrix

In the current work epoxy resin is chosen as matrix, treated Sacharum offinarum (SugarCane) fiber, Pennisetum typhoides (Jowar) filler is chosen as reinforcement. Room temperature cured Epoxy System filled with Sacharum offinarum fiber and Pennisetum typhoides (Jowar) filler is synthesised by mechanical shear mixer, then kept in a Ultra sonic Solicitor for better dispersion of Pennisetum typhoides (Jowar) filler in the matrix. Different weights of modified Pennisetum typhoides (Jowar) filler (1,2,3,4,5 gm wt) has been incorporated into the Epoxy matrix in order to study the variation of Mechanical and Thermal properties.

scholarly journals PROPERTIES OF CHITIN REINFORCES COMPOSITES: A REVIEW

2016 ◽  
Vol 36 (1) ◽  
pp. 57-71
Author(s):  
MI Ofem ◽  
AJ Anyandi ◽  
EB Ene
Keyword(s):  
Thermal Properties ◽  
Hydrochloric Acid ◽  
Cell Walls ◽  
Chemical Method ◽  
Stress Transfer ◽  
Filler Loading ◽  
Mechanical And Thermal Properties ◽  
Reinforced Composites ◽  
Chitin Whiskers ◽  
20 Nm

This paper provides a review of chitin, sources, extraction, uses, applications, chitin whiskers and it preparations and the mechanical and thermal properties of chitin reinforced composites. Also reported here is the properties of CaCO3/chitin whiskers reinforced composites. Chitin can be extracted from shrimps, crabs cell walls, yeast and green algae or from Riftia tubes with a percentage varying between 20 to 40% depending on the source. Despite the denaturing of chitin, the most widely used method of extractiong chitin from seashells is the chemical method. Chitin whiskers known by different name in literature can only be prepared by using hydrochloric acid. The rod-like particles of chitin whiskers have an average lengths and widths of 200 ± 20 nm and 8 ± 1 nm respectively or more depending on the source of chitin. Chitin whiskers reinforced composites have greatly improved the mechanical and thermal properties of the composites especially at lower filler loading. The improved properties are attributed to effective stress transfer. http://dx.doi.org/10.4314/njt.v36i1.9

Effect of Hybrid Fillers on the Thermal Properties of UHMWPE/Chitosan-ZnO Composites

2015 ◽  
Vol 754-755 ◽  
pp. 71-76
Author(s):  
Mohd Firdaus Omar ◽  
Lu Yew Wei ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
Kamarudin Hussin
Keyword(s):  
Thermal Properties ◽  
Hybrid Composites ◽  
Degree Of Crystallinity ◽  
Reinforced Composites ◽  
Compression Technique ◽  
Melting Temperatures ◽  
Fusion Enthalpy ◽  
Reinforced Composite ◽  
Hybrid Fillers ◽  
Loss Level

In this work, UHMWPE reinforced composites containing hybrid zinc oxide (ZnO) and chitosan particles were prepared via the hot compression technique. The effect of ZnO contents (10, 20, 30 wt.%) and chitosan contents (1, 2, 3 wt.%) on the thermal properties of UHMWPE/ZnO and UHMWPE/Chitosan-ZnO reinforced composites were successfully investigated using DSC and TGA analysis, respectively. Based on DSC results, both UHMWPE/ZnO and hybrid composites did not record significant changes in the melting temperatures (Tm). The heat fusion enthalpy (Hm) and degree of crystallinity (Xc) of hybrid composites were found to be higher than UHMWPE/ZnO composites. As the TGA results shown, hybrid composites were also found to have higher thermal stability than UHMWPE/ZnO composites at 10 % and 50 % weight loss level. Overall, the UHMWPE/ZnO + 3 wt.% Chitosan hybrid reinforced composite recorded comparable mechanical properties and better thermal properties than neat UHMWPE.

Machining parametric study on the natural fiber reinforced composites: A review

2021 ◽  
pp. 095440622110637
Author(s):  
Vijay Kumar Mahakur ◽  
Sumit Bhowmik ◽  
Promod Kumar Patowari
Keyword(s):  
Natural Fiber ◽  
Low Cost ◽  
Natural Fibers ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Machining Processes ◽  
Industrial Sectors ◽  
The Matrix ◽  
Input Variables

Nowadays, the utilization of natural fiber reinforced composite has increased frequently. These natural fibers have significant features like low cost, renewable, and, more importantly, biodegradable in nature, making them to be utilized for various industrial sectors. However, the massive demand for natural fiber reinforced composites (NFRC), forces them to be machined and operated, which is required for countless areas in multiple industries like automotive, marine, aerospace and constructions. But before obtaining the final shape of any specimen, this specimen should come across numerous machining processes to get the desired shape and structure. Therefore, the present review paper focused on the various aspects during conventional and unconventional machining of the NFRC. It covers the work by exploring the influence of all input variables on the outcome produced after machining the NFRC. Various methodologies and tools are also discussed in this article for reducing the machining defects. The machining of the NFRC is found as a challenging task due to insufficient interlocking between the matrix and fibers, and minimum knowledge in machining characteristics and appropriate input parameters. Thus, this review is trying to assist the readers to grasp a basic understanding and information during the machining of the NFRC in every aspect.

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