Effect of Calcium Carbonate on Thermal Properties of CaCO3/Kenaf/HDPE and CaCO3/Rice Husk/HDPE Composites

2013 ◽  
Vol 812 ◽  
pp. 175-180 ◽  
Author(s):  
Abd Aziz Noor Zuhaira ◽  
Mohamed Rahmah
Keyword(s):  
Thermal Stability ◽  
Thermal Properties ◽  
Calcium Carbonate ◽  
Rice Husk ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Natural Fibers ◽  
Filler Loading ◽  
Degree Of Crystallinity ◽  
Differential Scanning Calorimetric

In this research, the thermal properties of 30% filler loading of natural fibers with varying filler loadings of calcium carbonate (CaCO3) were studied. CaCO3 was compounded using twin-screw extruder with rice husk/high density polyethylene (HDPE) and kenaf/HDPE composites to produce composites. Compounded composites were prepared and tested for thermal properties. The thermal stability of the components was examined by thermogravimetric analysis (TGA) and differential scanning calorimetric (DSC) to identify the influence of CaCO3 filler loading on thermal properties of the composites. The cycle heating for TGA was 30-800°C while for differential scanning calorimetric (DSC) was 30-300°C. Melting temperature (Tm) of kenaf/HDPE hybrid composites increased slightly with addition of 10% CaCO3. However, decreasing Tm was found for all CaCO3 filler loading in rice husk/HDPE composites. The DSC analysis showed that the degree of crystallinity (Xc) of hybrid composite decrease with the addition of CaCO3 filler loading. From TGA result, CaCO3/kenaf/HDPE hybrid composite showed better thermal stability compared to CaCO3/rice husk/HDPE hybrid composite.

Effects of Kenaf and Rice Husk on Thermal Properties of Kenaf/CaCO3/HDPE and Rice Husk/CaCO3/HDPE Hybrid Composites

2013 ◽  
Vol 748 ◽  
pp. 201-205
Author(s):  
Abd Aziz Noor Zuhaira ◽  
Rahmah Mohamed
Keyword(s):  
Thermal Stability ◽  
Thermal Properties ◽  
Rice Husk ◽  
Natural Fiber ◽  
Hybrid Composites ◽  
Degree Of Crystallinity ◽  
Differential Scanning Calorimetric ◽  
Kenaf Fiber ◽  
Twin Screw ◽  
Thermal Stability Of

In this research, rice husk and kenaf fiber were compounded with calcium carbonate (CaCO3)/high density polyethylene (HDPE) composite.Different loadings of up to 30 parts of 50 mesh sizes of rice husk particulate and kenaf fiber were compounded using twin-screw extruder with fixed 30 parts of CaCO3 fillerto produce hybrid composites of rice husk/CaCO3/HDPE and kenaf/CaCO3/HDPE.Compounded hybrid composites were prepared and tested for thermal properties. The thermal stability of the components was examined by thermogravimetricanalysis (TGA) and differential scanning calorimetric (DSC). The DSC results showed a slightly changes in melting temperature (Tm), crystallization temperature (Tc) and the degree of crystallinity (Xc) with addition of natural fiber. TGA indicates thermal stability of hybrid composite filled with kenaf or rice husk is better than unfilledCaCO3/HDPE composite.

scholarly journals Comparative Study of Mechanical Properties and Thermal Stability on Banyan/Ramie Fiber-Reinforced Hybrid Polymer Composite

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
T. Raja ◽  
S. Ravi ◽  
Alagar Karthick ◽  
Asif Afzal ◽  
B. Saleh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Impact Strength ◽  
Hybrid Composite ◽  
Composite Laminates ◽  
Hybrid Composites ◽  
Natural Fibers ◽  
Synthetic Fiber ◽  
Ramie Fiber ◽  
Fabric Composite

The usage of natural fibers has increased recently. They are used to replace synthetic fiber products in aircraft and automobile industries. In this study, natural fibers of bidirectional banyan mat and ramie fabrics are used for reinforcement, and the matrix is an epoxy resin to fabricate composite laminates by traditional hand layup technique at atmospheric temperature mode. Five different sequences of reinforcements are as follows to quantify the effect of thermal stability and mechanical behavior of silane-treated and untreated hybrid composites. The results revealed that silane-treated fabric composite laminates were given enhanced mechanical properties of 7% tensile, 11% flexural, and 9% impact strength compared with untreated fabric composite, and at the same time when the increasing of ramie fabric was given the positive influence of 41% improved tensile strength of 40.7 MPa, 49% improved in flexural strength of 38.9 MPa and negative influence in 57% lower impact strength in sample E and positive value in sample A 21.12 J impact energy absorbed in the hybrid composite. Thermogravimetric analysis (TGA) revealed the thermal stability of the hybrid composite. In sample A, the thermal stability is more than in other samples, and 410°C is required to reduce the mass loss of 25%. The working mass condition of the hybrid composite is up to 3.25 g after it moves to degrade.

scholarly journals Thermal Properties of Woven Kenaf/Carbon Fibre-Reinforced Epoxy Hybrid Composite Panels

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
H. A. Aisyah ◽  
M. T. Paridah ◽  
S. M. Sapuan ◽  
A. Khalina ◽  
O. B. Berkalp ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Properties ◽  
Carbon Fibre ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Fibre Composite ◽  
Decomposition Temperature ◽  
Carbon Fibre Composite ◽  
Pure Carbon ◽  
Woven Kenaf

The effects of carbon fibre hybridisation on the thermal properties of woven kenaf-reinforced epoxy composites were studied. Woven kenaf hybrid composites of different weave designs of plain and satin and fabric counts of 5×5 and 6×6 were manually prepared by a vacuum infusion technique. A composite made from 100% carbon fibre was served for a comparison purpose. Thermal properties of pure carbon fibre and hybrid composites were determined by using a thermogravimetric analyser (TGA) and differential scanning calorimeter (DSC). It was found that a hybrid composite with higher kenaf fibre content (fabric count 6×6) showed better thermal stability while the highest thermal stability was found in the pure carbon fibre composite. The TG and DTG results showed that the amount of residue decreased in the plain-designed hybrid composite compared to the satin-designed hybrid composite. The DSC data revealed that the presence of woven kenaf increased the decomposition temperature.

Effects of Calcium Carbonate on Melt Flow and Mechanical Properties of Rice Husk/HDPE and Kenaf/HDPE Hybrid Composites

2013 ◽  
Vol 795 ◽  
pp. 286-289 ◽  
Author(s):  
Abd Aziz Noor Zuhaira ◽  
Mohamed Rahmah
Keyword(s):  
Mechanical Properties ◽  
Calcium Carbonate ◽  
Impact Strength ◽  
Rice Husk ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Melt Flow Index ◽  
Flow Index ◽  
Test Results ◽  
Melt Flow

In this research, calcium carbonate (CaCO3) was compounded with rice husk/high density polyethylene (HDPE) and kenaf/HDPE composite at different filler loadings to produce hybrid composites. Melt flow index (MFI) and mechanical properties of hybrid composite was investigated. From the test results, the addition of CaCO3 filler had decreased melt flow index (MFI) on both composites. In terms of mechanical properties, tensile strength, elongation at break and impact strength decreased, whereas Youngs Modulus increased with the increase of CaCO3 in both kenaf/HDPE and rice husk/HDPE composites. Impact strength of unfilled rice husk/HDPE composite was lower than unfilled kenaf/HDPE composite, however impact strength of CaCO3/rice husk/HDPE hybrid composite were found to have slightly higher than CaCO3/kenaf/HDPE hybrid composite with addition of 10% and 20% of CaCO3.

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.

Comparison of Melt Flow and Mechanical Properties of Rice Husk and Kenaf Hybrid Composites

2013 ◽  
Vol 701 ◽  
pp. 42-46 ◽  
Author(s):  
Abd Aziz Noor Zuhaira ◽  
Rahmah Mohamed
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Rice Husk ◽  
Hybrid Composites ◽  
Natural Fibers ◽  
Melt Flow Index ◽  
Silica Content ◽  
Flow Index ◽  
Melt Flow

This research is to identify the difference in melt flow and mechanical properties in hybrid composites between kenaf and rice husk that each of the filler was compounded with composite material of calcium carbonate (CaCO3) and high density polyethylene (HDPE) in different loading amount. Different filler loading up to 30 parts of kenaf fibers and rice husk particulate were mixed with the fixed 30% amount of CaCO3. Compounded hybrid composite were prepared and tested for melt flow index, tensile and impact strength. Addition of both fillers had decreased melt flow index (MFI). MFI of rice husk/CaCO3 was higher than kenaf/CaCO3 in HDPE composites. Tensile strength, elongation at break and impact properties of both hybrid composites had decreased with increasing filler content. Tensile strength of kenaf/CaCO3 was higher than rice husk/CaCO3 due to intrinsic fiber structure of kenaf which has some reinforcing effect compared to rice husk. While, impact strength of rice husk/CaCO3 was improved with addition of filler but drastically decrease as the rice husk content were increased up to 30% due to high silica content in rice husk. The Youngs Modulus was increased with addition of natural fibers in CaCO3/HDPE composite.

scholarly journals Effect of Kevlar Fiber and Nano Sio2 on Mechanical Andthermal Properties of Hybrid Composites

2021 ◽  
Vol 37 (3) ◽  
pp. 531-540
Author(s):  
P.S. Yadav ◽  
Rajesh Purohit ◽  
Anil Kothari ◽  
R. S. Rajput
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Thermal Properties ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Mechanical And Thermal Properties ◽  
Nano Sio2 ◽  
Kevlar Fiber ◽  
Heat Deflection Temperature ◽  
Scanning Electron

The aim of the current investigation is an analysis of the mechanical and thermal properties of epoxy/ nano-silica/ Kevlar fiber hybrid composites. The ultrasonic vibration-assisted hand layup process was used for the preparation of composite with different weight percentages (1%, 2%, 3%, and 4%) of Nano SiO2 particles and 2 layers of the Kevlar fiber. For the evolution of mechanical properties tensile tests, hardness tests, impact tests, and flexural tests were done. For evaluation of morphological analysis Field Emission-Scanning Electron Microscopy, X-RD, and FT-IR tests were performed. A heat deflection temperature test was performed for the evaluation of the thermal characteristic of the hybrid composite. The results show the improvement of mechanical and thermal properties of the hybrid composite with increasing wt.% of nano SiO2 particles in the hybrid composites. As per the observation of experimental results, the Field Emission-Scanning Electron Microscopy,Fourier Transform Infrared Spectroscopy, and X-ray diffraction test also show the enhancement of surface morphology and chemical structure of hybrid composites. The heat diffraction test shows the improvement of thermal resistance and heat absorption capability.As per the observation of experimental results, the tensile strength, hardness, and impact strength increased up to 98%, 16%, and 42% respectively. The flexural test shows the improvement of flexural modulus and stresses 46% and 35% respectively. The heat deflection temperature of hybrid composite improves up to 30%.

scholarly journals Mechanical Behaviour of Palm Fiber (Palmyra Spout) – Basalt Fiber - Hybrid Composites

2019 ◽  
Vol 9 (1) ◽  
pp. 1064-1070
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Glass Fibers ◽  
Natural Fibers ◽  
Basalt Fiber ◽  
Weight Ratio ◽  
Test Sample ◽  
Palm Fiber ◽  
Molding Method

: In general the natural fibers are taken out from the sources of animals and plants. In recent days the natural fibers play an important role in engineering applications like automotive, aerospace and marine industries due to abundant availability, less in cost and zero percentage environment harmless in nature. In this paper the investigation of various mechanical properties of hybrid reinforced composite (Palm fiber Basalt S-glass fiber) is been done on the fabricated samples. The different mechanical property includes tensile, hardness and impact tests etc... The fabrication comprises three layers of Palm and Basalt fibers outer laminated by two layers of S-glass fibers using injection molding method. From the various testing and investigation against the test sample it is been concluded that the fibers in the hybrid set took a major role in determining the important mechanical properties. Thus the fibers present in the hybrid composite increases the strength, stiffness and weight ratio of the composite materials. The various forms and structural analysis of the hybrid composite material are processed by using scanning electron microscope for attaining the better results and application basis

The Influence of Moisture Absorption on the Mechanical and Thermal Properties of Chemically Treated DPL Reinforced Hybrid Composite

2020 ◽  
Vol 978 ◽  
pp. 316-322 ◽  
Author(s):  
Priyadarshi Tapas Ranjan Swain ◽  
Sankar Narayan Das ◽  
Prabina Kumar Patnaik ◽  
Abhilash Purohit
Keyword(s):  
Thermal Properties ◽  
Glass Fiber ◽  
Moisture Absorption ◽  
Natural Fiber ◽  
Hybrid Composites ◽  
Synthetic Fiber ◽  
Differential Scanning Calorimetric ◽  
Mechanical And Thermal Properties ◽  
Weight Percentage ◽  
Chemically Treated

Moisture absorption of natural fiber-based composites is one of the major problems in outdoor applications. The present study deals with the effect of moisture absorption on mechanical and thermal properties of unmodified/modified Date Palm Leaf (DPL) with glass fiber-based hybrid composites. Natural fibers were modified with alkaline treatment to improve fiber and matrix bonding. Conventional hand lay-up technique is used to fabricate the composites with varying different wt.% of treated and untreated short DPL with constant wt.% of glass fiber and prepared with random oriented manner. The combine effect of hydrophilic and hydrophobic nature find out as the study based upon the natural with synthetic fiber hybrid composites. Mechanical behaviour of the epoxy-based hybrid composites were characterized by using tensile, flexural and hardness test. The results revealed that significant improvement in mechanical properties by the addition of different weight percentage of modified DPL. Different thermal properties of the composites were described by using Thermo Gravimetric Analyzer (TGA) and Differential Scanning Calorimetric (DSC). Morphological investigation was carried out to by using scanning electron microscope. All the properties of untreated natural fiber reinforced composites were mostly affected by the influence of water absorption as compared with chemically treated based composites.

Thermal Stability of PALF-PP and PALF-PLA for Natural Fiber Honeycomb Core Materials

2021 ◽  
Vol 87 (1) ◽  
pp. 20-29
Author(s):  
Amira Syuhada Zainudin ◽  
Abdul Rahim Othman
Keyword(s):  
Thermal Stability ◽  
Natural Fiber ◽  
Thermal Characteristic ◽  
Inert Atmosphere ◽  
Filler Loading ◽  
Differential Scanning Calorimetric ◽  
Dsc Analysis ◽  
Honeycomb Core ◽  
Nitrogen Gas ◽  
Thermal Stability Of

This paper studied the thermal behaviour of pineapple leaf fiber (PALF) reinforced with polypropylene (PP) and polylactic acid (PLA) composite, used for natural fiber honeycomb core. Thermogravimetric analysis (TGA) and differential scanning calorimetric (DSC) analysis were used to measure the thermal characteristic of PALF-PP/PLA composites. In particular, the TGA analysis was utilized to measure the degradation and decomposition of materials in different composition (NF-PP/PLA (0%, 15%, 30% and 50%). The measurements were carried out in the temperature of 0oC- 900oC, at a heating rate of 10oCmin-1 and under an inert atmosphere (nitrogen gas). The temperature of DSC analysis was programmed to between 25oC- 500oC. The result shows the thermal stability of PALF-PP/PLA decreased as the PALF filler-loading increased. While from the DSC analysis this study clearly shows in the graph plot, the sample have glass transition temperature, crystallization and melting temperature. So that means the sample in this study is crystalline and amorphous domains.

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