Use of Rice Husk Powder as a Substitute for CaCO3 in Thermoset-Based Molding Compounds

2007 ◽  
Vol 1 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Chuleeporn Thanomsilp ◽  
Silvano Cauchi-Savona ◽  
Ton Peijs ◽  
Saran Posyachinda
Keyword(s):  
Mechanical Properties ◽  
Calcium Carbonate ◽  
Glass Fiber ◽  
Rice Husk ◽  
Filler Particle ◽  
Volume Ratio ◽  
Charpy Impact ◽  
Molding Compounds ◽  
Uniform Dispersion ◽  
Cold Pressed

This paper explores the potential of using rice husk powder (RHP) as a substitute or in combination with calcium carbonate (CaCO3) fillers for its application in glass fiber/polyester molding compounds. In each case, one type of filler particle was used, while three formulations of filler combinations were selected: 100% RHP, 50:50% RHP:CaCO3, and 100% CaCO3. The constituents were kept at a constant volume ratio of resin:fibers:filler at 63:12:25% in all the formulations investigated. A sigma-bladed mixer was used to mix the compounds to a uniform dispersion. These were subsequently cold-pressed, post-cured, and tested for flexure, tension, and notched-Charpy impact. The results showed that the strength of the composites increases with increasing RHP, while the stiffness decreases when the CaCO3 is replaced by RHP. However, weight-for-weight, the composites containing RHP exhibit better or at least comparable mechanical properties to those containing solely CaCO3.

Mechanical properties of hybrid glass fiber/rice husk reinforced polymer composite

2020 ◽  
Vol 27 ◽  
pp. 1749-1755
Author(s):  
Mawarnie Ismail ◽  
M.R.M. Rejab ◽  
J.P. Siregar ◽  
Zalinawati Mohamad ◽  
M. Quanjin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Polymer Composite ◽  
Rice Husk ◽  
Reinforced Polymer

Analysis of the Mechanical Properties of Rice Husk Reinforced Polyethylene Composites Using Experiments with Mixtures

2013 ◽  
Vol 747 ◽  
pp. 395-398 ◽  
Author(s):  
Ahmad Bilal ◽  
Richard Lin ◽  
Krishnan Jayaraman
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Rice Husk ◽  
Flexural Modulus ◽  
Tensile Modulus ◽  
Charpy Impact ◽  
Thermoplastic Composites ◽  
Design Expert ◽  
Wood Fibres ◽  
Charpy Impact Strength

In recent years, the use of agro-wastes, such as rice husk (RH), in the manufacture of thermoplastic composites to replace wood fibres has emerged as a promising field of interest. Linear medium density polyethylene (LMDPE) and ground rice husk (GRH) were used to manufacture composites. The D-optimal design routine in Design Expert software was used to select ten different blends with different percentages of RH, MDPE and compatibiliser, maleated polyethylene (MAPE) along with four replicate blends. RH was varied between 15 to 50 wt%, MAPE between 1 to 6 wt% and MDPE between 44 to 84 wt%. The effects of RH, MDPE and MAPE content on the mechanical properties of the manufactured composites were examined. The results show that tensile and flexural properties of the composites were improved, whereas, Charpy impact strength was decreased with increasing RH loading. The effect of MAPE on tensile strength and Charpy impact strength was significant, but its effect was negligible on tensile modulus, flexural strength and flexural modulus of the composites.

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 Different Concentrations and Sizes of Particles of Rice Husk Ash - RHS in the Mechanical Properties of Polypropylene

2010 ◽  
Vol 660-661 ◽  
pp. 23-28 ◽  
Author(s):  
G.C. Nascimento ◽  
D.M. Cechinel ◽  
R. Piletti ◽  
Erlon Mendes ◽  
M.M.S. Paula ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Waste Product ◽  
Impact Resistance ◽  
Charpy Impact ◽  
Polymeric Materials ◽  
Optical Microscope ◽  
Uniaxial Tensile ◽  
Production Cycle

The minerals powders are much applied on polymeric materials to better its properties and to promote new applications. The rice husk ash powder - RHS is a mineral compound has been applied on polymeric compounds to increase the stiffness. This work presents studies of different sizes of particles of RHS applied at different concentrations in polypropylene. To study the mechanical properties were applied techniques of Charpy Impact Resistance and Uniaxial Tensile Analysis. The morphology was observed using the optical microscope. The results showed that the CCA may be an alternative in the incorporation of mineral loads in polypropylene, since this is a waste product generated in the production of rice, thus the complete closure of the production cycle of the cereal.

Role of Fillers on Physico-Mechanical Properties of POM Based Hybrid Composites

2019 ◽  
Vol 895 ◽  
pp. 170-175
Author(s):  
Krishna ◽  
Bheemappa Suresha ◽  
H.M. Somashekar
Keyword(s):  
Mechanical Properties ◽  
Mechanical Performance ◽  
Hybrid Composites ◽  
Full Range ◽  
Testing Machine ◽  
Physical And Mechanical Properties ◽  
Charpy Impact ◽  
Filler Loading ◽  
Melt Mixing ◽  
Uniform Dispersion

Silicone (SC) and polytetrafluroethylene (PTFE) reinforced polyoxymethylene (POM) composites have been fabricated by melt mixing followed by injection moulding. Physical and mechanical properties of SC and SC+PTFE/POM composites have been investigated as per ASTM standards. The dispersion of fillers in POM was studied by using scanning electron microscopy (SEM). The effects indicated that the hardness of the POM matrix decreases with increasing the SC content and slight increase in hardness was found in SC+PTFE/POM. The mechanical performance of the composites are investigated by means of a well known universal testing machine and notched Charpy impact tester. The POM with 10 wt. % of SC binary composite reveals good mechanical properties. The tensile and flexural properties of SC+PTFE/POM hybrid composites are higher than that of 20 and 30 wt. % SC reinforced POM binary composites. Further, these mechanical strength and impact toughness are established on the kind as nicely as filler loading over the full range of the study. The uniform dispersion of the filler in the POM matrix is obtained from SEM micrographs. Furthermore, SEM was used to identify the fractographic points of the tensile fractured POM based composites.

scholarly journals Effect of Clay Addition on Mechanical Properties of Unsaturated Polyester/Glass Fiber Composites

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Kusmono ◽  
Zainal Arifin Mohd Ishak
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Glass Fiber ◽  
Unsaturated Polyester ◽  
Flexural Modulus ◽  
Charpy Impact ◽  
Fiber Composites ◽  
Glass Fiber Composites

Unsaturated polyester (UP)/glass fiber/clay composites were prepared by hand layup method. The effect of clay loading on the morphological and mechanical properties of UP/glass fiber composites was investigated in this study. X-ray diffraction (XRD) was used to characterize the structure of the composites. The mechanical properties of the composites were determined by tensile, flexural, unnotched Charpy impact and fracture toughness tests. XRD results indicated that the exfoliated structure was found in the composite containing 2 wt% of clay while the intercalated structure was obtained in the composite with 6 wt% of clay. The tensile strength, flexural strength, and flexural modulus of the composites were increased in the presence of clay. The optimum loading of clay in the UP/glass fiber composites was attained at 2 wt%, where the improvement in in tensile strength, flexural strength, and flexural modulus was approximately 13, 21, and 11%, respectively. On the other hand, the highest values in impact toughness and fracture toughness were observed in the composites with 4 wt% of clay.

scholarly journals INVESTIGATION OF SOME MECHANICAL PROPERTIES FOR NATURAL (EGGSHELL) AND INDUSTRIAL (CALCIUM CARBONATE) MATERIAL / REINFORCED WITH GLASS FIBER WITH POLYMER COMPOSITE

2020 ◽  
Vol 24 (06) ◽  
pp. 137-141
Author(s):  
Marwah Subhi Attallah ◽  
Keyword(s):  
Mechanical Properties ◽  
Calcium Carbonate ◽  
Glass Fiber ◽  
Glass Fibers ◽  
Matrix Material ◽  
Weight Fraction ◽  
Mean Values ◽  
Particle Size Analyzer ◽  
Carbonate Material ◽  
The Mean

The purpose of this paper is to discuss the influence of adding eggshell and calcium carbonate powder reinforced with glass fibers and epoxy resin. Hand Lay-upimethod was utilized for the preparation of samples from epoxyiresin as a matrix material with (6%weight fraction chopped glass fiber) and (2%,4%, 6% & 8% weight fraction eggshell, CaCO3 powder) as filler material . The tensile and impact properties are tested for the specimens containing calcium carbonate and eggshell powder reinfoced with glass fiber and epoxy resins, also the result analyzed by (SPSS) to determine the specimens have best mechanical properties. The mean particle size analyzer of the eggshell powder and calcium carbonate powder were (12.6µm, 0.4-1µm) respectively. The results showed that the mean values of tensile test, modulus of elasticity, impact strength and fracture toughness (247.50,222.00MPa) (8.450,7.500 GPa) (8.150, 7.500K.J/m2) (9.1675 , 7.8345 MPa.m1/2) respectively increased with the addition (6% glass fiber+8%CaCO2, eggshell), while the mean values of the elongation percentage at break (%) decrease with the addition (6% glass fiber+8%CaCO2). The SPSS statistical shown the values was significantly increased whenever the value (Sig < 0.05).

Comparing fast inductive tempering and conventional tempering: Effects on microstructure and mechanical properties

2018 ◽  
Vol 115 (4) ◽  
pp. 407 ◽  
Author(s):  
Annika Eggbauer Vieweg ◽  
Gerald Ressel ◽  
Peter Raninger ◽  
Petri Prevedel ◽  
Stefan Marsoner ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Impact Energy ◽  
Charpy Impact ◽  
Heat Treating ◽  
Processing Route ◽  
High Heating Rate ◽  
Heating Rates ◽  
High Heating ◽  
Tempering Treatment ◽  
Carbide Distribution

Induction heating processes are of rising interest within the heat treating industry. Using inductive tempering, a lot of production time can be saved compared to a conventional tempering treatment. However, it is not completely understood how fast inductive processes influence the quenched and tempered microstructure and the corresponding mechanical properties. The aim of this work is to highlight differences between inductive and conventional tempering processes and to suggest a possible processing route which results in optimized microstructures, as well as desirable mechanical properties. Therefore, the present work evaluates the influencing factors of high heating rates to tempering temperatures on the microstructure as well as hardness and Charpy impact energy. To this end, after quenching a 50CrMo4 steel three different induction tempering processes are carried out and the resulting properties are subsequently compared to a conventional tempering process. The results indicate that notch impact energy raises with increasing heating rates to tempering when realizing the same hardness of the samples. The positive effect of high heating rate on toughness is traced back to smaller carbide sizes, as well as smaller carbide spacing and more uniform carbide distribution over the sample.

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