scholarly journals Evaluasi Pembuatan Prototype Package Tray Biokomposit Serat Tebu- Polypropylene untuk Kebutuhan Interior Mobil

2020 ◽  
Vol 17 (2) ◽  
pp. 42-47
Author(s):  
Patrik Permana Putra Wijaya ◽  
Juliana Anggono
Keyword(s):  
Mechanical Property ◽  
Flexural Strength ◽  
Sugarcane Bagasse ◽  
Room Temperature ◽  
Natural Fibers ◽  
Interfacial Region ◽  
Flexural Test ◽  
The Matrix ◽  
Naoh Solution ◽  
Strong Material

Natural fibers used in the fabrication of biocomposite product can support the need of the industries for lightweight yet strong material. Sugarcane bagasse is one of the available natural fibers in Indonesia. There have been some research done on these bagasse fibers as reinforcement materials for plastics and their incorporation to the matrix has improved its strength. This research aimed to evaluate the fabrication of a car package tray prototype. The composition and the bagasse were prepared in accordance with the previous research in which the bagasse were alkali treated using NaOH solution of 8 wt% for one hour at room temperature. The hotpressed prototype was evaluated by its physical outlook and the mechanical property of its preform. The flexural test shows a low flexural strength of the prototype (7.4 MPa) compared to the required strength of the current material (woodboard) used by the industry (35.58 MPa). The evaluation shows the clustering of bagasse fibers, uneven distribution of sugarcane/PP in the structure and low adhesion at the interfacial region between bagasse fibers and PP.

scholarly journals Mechanical Properties of Mortars Reinforced with Amazon Rainforest Natural Fibers

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 155
Author(s):  
Régis Pamponet da Fonseca ◽  
Janaíde Cavalcante Rocha ◽  
Malik Cheriaf
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Natural Fibers ◽  
Construction Materials ◽  
Hot Water ◽  
Amazon Rainforest ◽  
Hot Water Treatment ◽  
Composite Binder ◽  
Naoh Solution ◽  
Reference Samples

The addition of natural fibers used as reinforcement has great appeal in the construction materials industry since natural fibers are cheaper, biodegradable, and easily available. In this work, we analyzed the feasibility of using the fibers of piassava, tucum palm, razor grass, and jute from the Amazon rainforest as reinforcement in mortars, exploiting the mechanical properties of compressive and flexural strength of samples with 1.5%, 3.0%, and 4.5% mass addition of the composite binder (50% Portland cement + 40% metakaolin + 10% fly ash). The mortars were reinforced with untreated (natural) and treated (hot water treatment, hornification, 8% NaOH solution, and hybridization) fibers, submitted to two types of curing (submerged in water, and inflated with CO2 in a pressurized autoclave) for 28 days. Mortars without fibers were used as a reference. For the durability study, the samples were submitted to 20 drying/wetting cycles. The fibers improved the flexural strength of the mortars and prevented the abrupt rupture of the samples, in contrast to the fragile behavior of the reference samples. The autoclave cure increased the compressive strength of the piassava and tucum palm samples with 4.5% of fibers.

scholarly journals Synthesis and Characterization of Natural Fibers Reinforced Fiber Epoxy Composites

2015 ◽  
Vol 51 ◽  
pp. 47-53
Author(s):  
U. Mahaboob Basha ◽  
D. Mohana Krishnudu ◽  
P. Hussain ◽  
K. Manohar Reddy ◽  
N. Karthikeyan ◽  
...  
Keyword(s):  
Room Temperature ◽  
Natural Fibers ◽  
Epoxy Composites ◽  
Synthesis And Characterization ◽  
Mechanical And Thermal Properties ◽  
Epoxy System ◽  
Pennisetum Typhoides ◽  
The Matrix ◽  
Reinforced Fiber

In the current work epoxy resin is chosen as matrix, treated Sacharum offinarum ( SugarCane) fiber, Pennisetum typhoides (Jowar)/ Fillet miller (Ragi) filler are chosen as reinforcement. Room temperature cured Epoxy System filled with Sacharum offinarum fiber and Pennisetum typhoides (Jowar)/ Fillet miller (Ragi) filler are synthesised by mechanical shear mixer, then kept in a Ultra sonic Sonicator for better dispersion of Pennisetum typhoides (Jowar)/ Fillet miller (Ragi) filler in the matrix. Different weights of modified Pennisetum typhoides (Jowar)/ Fillet miller (Ragi) 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.

Effects of CeO2-Rich Mixed Rare Earth on the Mechanical Properties of Al2O3-Mullite Based Foam Ceramics

2010 ◽  
Vol 150-151 ◽  
pp. 815-820
Author(s):  
Shu Jun Ji ◽  
Xue Yi Guo ◽  
Jian Xiong Dong ◽  
Peng Su
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Rare Earth ◽  
Flexural Strength ◽  
Room Temperature ◽  
Strengthening Mechanism ◽  
Mechanism Analysis ◽  
Rare Earth Addition ◽  
The Matrix ◽  
Ceramic Microstructure

Using corundum, quartz, kaoline, etc, as base components and CeO2-rich mixed rare earth as modifier, foam ceramics were fabricated adopting the organic foam impregnation process. The mixed rare earth addition had much improving effects on the matrix mechanical properties owing to much glass phase and acerate mullite growing. While 3wt% was considered to be the optimal addition, in this case, homogeneous and compact ceramic microstructure with maximal glass condensation and minimal porosity formed, with the matrix compressive strength and the flexural strength at room temperature reached 0.87MPa and 0.66MPa respectively, which were 52.6% and 73.7% higher than the original samples respectively. As the mixed rare earth addition exceeded further, the compressive strength increased slowly and the flexural strength descended gradually. XRD and SEM were used to structure strengthening mechanism analysis.

scholarly journals Mechanical Characterization of Epoxy Filled with Seed Shells as Reinforcement

2019 ◽  
Vol 8 (4) ◽  
pp. 6972-6977
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Sodium Hydroxide ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Flexural Modulus ◽  
Natural Fibers ◽  
Epoxy Composites ◽  
The Matrix ◽  
Sunflower Seed Shells

The use of natural fiber composite has been widely promoted in many industries such as construction, automotive and even aerospace. Natural fibers can be extracted from plants that are abundantly available in the form of waste such as sunflower seed shells (SSS) and groundnut shells (GNS). These fibers were chosen as the reinforcement in epoxy to form composites. The performance of composites was evaluated following the ASTM D3039 and ASTM D790 for tensile and flexural tests respectively. Eight types of composites were prepared using SSS and GNS fibers as reinforcement and epoxy as the matrix with the fiber content of 20wt %. The fibers were untreated and treated with Sodium Hydroxide (NaOH) at various concentrations (6%, 10%, 15%, and 20%) and soaking time (24, 48 and 72 hours). The treatment has successfully enhanced the mechanical properties of both composites, namely SSS/epoxy and GNS/epoxy composites. The SSS/epoxy composite has the best mechanical properties when the fibers were treated for 48 hours using 6% of NaOH that produced 22 MPa and 13 MPa of tensile and flexural strength respectively. Meanwhile, the treatment on groundnut shells with 10% sodium Hydroxide for 24 hours has increased the Flexural strength tremendously (53%), however no significant effect on the tensile strength. The same trend was also observed on the tensile and flexural modulus. The increase of 41% in flexural modulus after treatment with 10% NaOH for 24 hours was also the evidence of mechanical properties enhancement. The evidence of improved fiber and matrix bonding after fiber treatment was also observed using a scanning electron microscope (SEM). The SSS/epoxy composites performed better in tensile application, meanwhile the GNS/epoxy composites are good in flexural application.

Preparation and Property Study of 3D Cf/Si-Ti-C-O Composites Fabricated with Polytitanocarbosilane by PIP Process

2007 ◽  
Vol 336-338 ◽  
pp. 1242-1244
Author(s):  
Qi Kun Wang ◽  
Hai Feng Hu ◽  
Wen Wei Zheng ◽  
Qing Song Ma ◽  
Zhao Hui Chen
Keyword(s):  
Fracture Toughness ◽  
Flexural Strength ◽  
Thermal Shock ◽  
Brittle Failure ◽  
Room Temperature ◽  
Oxidation Treatment ◽  
Fracture Failure ◽  
The Matrix ◽  
Polymer Infiltration ◽  
Strength Retention

In this paper, 3D Cf/Si-Ti-C-O composites were prepared with a polytitanocarbosilane (PTC) via polymer infiltration and pyrolysis (PIP) process, and accordingly the mechanical, oxidation resisting and thermal shock resisting properties were investigated. The composites with density of 1.93g·cm-3 show rather high flexural strength (485.3MPa) and fracture toughness (19.95MPa⋅m1/2), and typical non-brittle fracture failure mode. After oxidation treatment at 1300°C for 10 minutes in air, the flexural strength of the samples is 306.2MPa, with 63% strength retention. After 5 times of thermal shock tests from room temperature to 1300°C, the flexural strength of the samples is 408.9MPa, about 85% strength retention. SEM observation also testifies non-brittle failure because many fibers are pulled out on the fracture surface. After oxidation treatment, the matrix shows no changes from XRD measurement.

Reaction Formed SiC Prepared by Room Temperature Freezing Casting

2012 ◽  
Vol 512-515 ◽  
pp. 297-300
Author(s):  
Chuan Qi Hu ◽  
Hua Wang ◽  
Hai Lin Liu ◽  
Yan Li Huo ◽  
Jie Tang ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Silicon Carbide ◽  
Flexural Strength ◽  
Porous Carbon ◽  
Weibull Modulus ◽  
Room Temperature ◽  
Methyl Cellulose ◽  
Infiltration Process ◽  
Carbon Preform ◽  
Carbon Resource

The porous carbon preforms with fine pore structure has been successfully fabricated by room temperature freezing casting, and the reaction formed SiC with fine mechanical property has prepared successfully by liquid silicon infiltration process. Charcoal powder was used as carbon resource, camphene was used as sublimate vehicle, methyl cellulose was used as pore maker and bonder. The result shows that the homogeneity of the porous carbon preform has been improved largely by adding methyl cellulose ,and the defects of reaction formed silicon carbide has reduced largely also. The density, average flexural strength and Weibull modulus of the best reaction formed silicon carbide prepared in this paper is 2.86 g/cm3, 430.75MPa and 9.29 respectively.

Mechanical and Fracture Properties of R-Glass Reinforced Composites with Pyrolysed Polysiloxane Resin as a Matrix

2005 ◽  
Vol 290 ◽  
pp. 344-347
Author(s):  
Miroslav Černý ◽  
D. Bednářová ◽  
Petr Glogar ◽  
Ján Dusza ◽  
Emőke Rudnayová
Keyword(s):  
Flexural Strength ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
The Other ◽  
Reinforced Composites ◽  
Fracture Properties ◽  
The Matrix ◽  
Mechanical And Fracture Properties ◽  
The Impact ◽  
Glass Reinforced Composites

Mechanical and fracture properties of unidirectional composites reinforced with R-glass fibres and utilizing various commercially available polysiloxane resins as matrix precursors were investigated. As the matrix becomes more brittle after the pyrolysis the impact toughness and flexural strength of the composites fall. On the other hand, the shear modulus rises after the pyrolysis as the matrix becomes stiffer in shear. The appearance of fracture surfaces generated during the flexural strength at room temperature (RT) and elevated temperatures is discussed.

scholarly journals The Strength of Polylactic Acid Composites Reinforced with Sugarcane Bagasse and Rice Husk

2020 ◽  
Vol 1000 ◽  
pp. 193-199
Author(s):  
Juliana Anggono ◽  
Bily Budiarto ◽  
Suwandi Sugondo ◽  
Hariyati Purwaningsih ◽  
Antoni
Keyword(s):  
Flexural Strength ◽  
Polylactic Acid ◽  
Sugarcane Bagasse ◽  
Rice Husk ◽  
Wood Flour ◽  
Research Work ◽  
Flexural Test ◽  
Area Density ◽  
Weight Percentage ◽  
Pull Out

There are more than 1000 species of cellulose plants available in fiber form. A number of them are by-products from the major food crops contain lignocellulosic sources and being investigated as composite reinforcement materials. Sugarcane bagasse and rice husk are potential reinforcement materials and they were used to reinforce polylactic acid (PLA) matrix to make green composites. In this research work, sugarcane bagasse was given two different kinds of treatment; some were alkali treated using 8 wt.% NaOH at room temperature for an hour and some other were steam treated at 0.75 MPa for 30 minutes. The fiber content of the composites changed with weight percentage ratios of sugarcane bagasse/rice husk/PLA was 25/0/75, 25/5/70 and 25/10/65. Flexural strength was tested in accordance with ASTM D790-17 and structural evaluation was evaluated using scanning electron microscope (SEM) on the fracture section of the flexural test samples. Composites produced using steam treated sugarcane bagasse and rice husk have lower area density (1277-1385 g/m2) compared to the ones formed using NaOH treated bagasse and rice husk (1162-1500 g/m2). Both values of area density are below the density of neat PP and wood flour reinforced PP/PE composites used as reference materials. The flexural test shows the NaOH treatment on the bagasse fibers improve the flexural strength of the composites but the rice husk content introduced to the structure reduces the strength of the composites. SEM evaluation shows fiber fracture and few pull-out.

Manufacturing and Mechanical Property Evaluations of CF/PLA Biocomposites

2014 ◽  
Vol 910 ◽  
pp. 153-156
Author(s):  
Ching Wen Lou ◽  
Jo Mei Liao ◽  
Zheng Lan Lin ◽  
Jia Horng Lin
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Tensile Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Tensile Test ◽  
Carbon Fibers ◽  
Impact Test ◽  
Flexural Modulus ◽  
Flexural Test

This study uses carbon fibers (CF) to reinforce polylactic acid (PLA) matrices to form CF/PLA biocomposites. Tensile test, flexural test, and impact test are performed on biocomposites to evaluate their mechanical properties. The results of tests show that an increment of the CF content results in an increase in tensile strength, flexural strength, flexural modulus, and impact strength. The combination of 15 wt% CF provides the resulting biocomposites with a 72 % increase in tensile strength, a 322 % increase in flexural modulus, and a 96 % increase in impact strength.

Inertization of Mine Tailing via Cold Consolidation in Geopolymer Matrix

2018 ◽  
Vol 761 ◽  
pp. 31-34 ◽  
Author(s):  
Isabella Lancellotti ◽  
Jenni Kiventerä ◽  
Michelina Catauro ◽  
Francesco dal Poggetto ◽  
Mirja Illikainen
Keyword(s):  
Mine Tailings ◽  
Room Temperature ◽  
Gold Mining ◽  
Leaching Test ◽  
Mining Site ◽  
Granulated Blast Furnace Slag ◽  
Geopolymer Matrix ◽  
The Matrix ◽  
Naoh Solution ◽  
Furnace Slag

The consolidation via geopolymerisation is a room temperature alkaline chemical reaction of condensation between SiO2 and AlO2 monomers. Such a matrix can retain a large number of cations to compensate for the Al+3 in place of Si+4 in the tetrahedra. Arsenic-rich mine tailings from a gold mining site were activated with NaOH solution and commercial Na-Silicate (Na2O/SiO2 = 3) to produce a no-hazardous final material. Granulated blast furnace slag and metakaolin were used as co-binders to optimize the formulations. Leaching test was used to evaluate the inertization capability of the matrix after curing times of 7 and 28 days. The leaching results show that increasing curing time there is a significant decrease of As leaching due to the better consolidation of the material. Leaching of Cu, V, Ba and Zn significantly decrease, while Ni and Cr remain almost constant and Sb slightly increases.

Sign in / Sign up

Export Citation Format

Share Document