scholarly journals SINTESIS NANOSELULOSA DARI SERAT NANAS DAN APLIKASINYA SEBAGAINANOFILLERPADA FILM BERBASIS POLIVINIL ALKOHOL

2015 ◽  
Vol 12 (1) ◽  
pp. 11 ◽  
Author(s):  
Evi Savitri Iriani ◽  
Kendri Wahyuningsih ◽  
Titi Candra Sunarti ◽  
Asep Wawan Permana
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Raw Materials ◽  
Limited Supply

<p>A variety of attempts have been made to reduce the dependence on petroleum raw materials based plastics which are limited supply the mechanical properties close to conventional plastic. The objectives of research was to know the effect of  pineapple nanocellulose effective in increasing tensile strength and elongation, but the higher addition (of up to 50%) resulted in decreased elongation. The addition and without glycerol</p>

scholarly journals Tension mechanical properties of recycled glass-epoxy composite material

2012 ◽  
pp. 189-198 ◽  
Author(s):  
Jelena Petrovic ◽  
Darko Ljubic ◽  
Marina Stamenovic ◽  
Ivana Dimic ◽  
Slavisa Putic
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Material ◽  
Composite Materials ◽  
Modulus Of Elasticity ◽  
Epoxy Composite ◽  
Raw Materials ◽  
Mechanical Tests ◽  
Recycled Glass ◽  
Before And After

The significance of composite materials and their applications are mainly due to their good properties. This imposes the need for their recycling, thus extending their lifetime. Once used composite material will be disposed as a waste at the end of it service life. After recycling, this kind of waste can be used as raw materials for the production of same material, which raises their applicability. This indicates a great importance of recycling as a method of the renowal of composite materials. This study represents a contribution to the field of mechanical properties of the recycled composite materials. The tension mechanical properties (tensile strength and modulus of elasticity) of once used and disposed glass-epoxy composite material were compared before and after the recycling. The obtained results from mechanical tests confirmed that the applied recycling method was suitable for glass-epoxy composite materials. In respect to the tensile strength and modulus of elasticity it can be further assessed the possibility of use of recycled glass-epoxy composite materials.

scholarly journals Effective reinforcements for thermoplastics based on carbon nanotubes of oil fly ash

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Numan Salah ◽  
Abdulrahman Muhammad Alfawzan ◽  
Abdu Saeed ◽  
Ahmed Alshahrie ◽  
Waleed Allafi
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Fly Ash ◽  
Young’S Modulus ◽  
Raw Materials ◽  
Young's Modulus ◽  
Weight Fraction ◽  
Low Weight ◽  
Oil Fly Ash

AbstractCarbon nanotubes (CNTs) are widely investigated for preparing polymer nanocomposites, owing to their unique mechanical properties. However, dispersing CNTs uniformly in a polymer matrix and controlling their entanglement/agglomeration are still big technical challenges to be overcome. The costs of their raw materials and production are also still high. In this work, we propose the use of CNTs grown on oil fly ash to solve these issues. The CNTs of oil fly ash were evaluated as reinforcing materials for some common thermoplastics. High-density polyethylene (HDPE) was mainly reinforced with various weight fractions of CNTs. Xylene was used as a solvent to dissolve HDPE and to uniformly disperse the CNTs. Significantly enhanced mechanical properties of HDPE reinforced at a low weight fraction of these CNTs (1–2 wt.%), mainly the tensile strength, Young’s modulus, stiffness, and hardness, were observed. The tensile strength and Young’s modulus were enhanced by ~20 and 38%, respectively. Moreover, the nanoindentation results were found to be in support to these findings. Polycarbonate, polypropylene, and polystyrene were also preliminarily evaluated after reinforcement with 1 wt.% CNTs. The tensile strength and Young’s Modulus were increased after reinforcement with CNTs. These results demonstrate that the CNTs of the solid waste, oil fly ash, might serve as an appropriate reinforcing material for different thermoplastics polymers.

Use of Cellulose-Containing Fillers in Composites with Polypropylene

1970 ◽  
Vol 17 (2) ◽  
pp. 150-154
Author(s):  
Marianna LAKA ◽  
Svetlana CHERNYAVSKAYA ◽  
Galia SHULGA ◽  
Viktor SHAPOVALOV ◽  
Andrej VALENKOV ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Shear Modulus ◽  
Rapeseed Oil ◽  
Water Retention ◽  
Raw Materials ◽  
Water Retention Value ◽  
Water Vapour Sorption ◽  
Recycled Polypropylene ◽  
Sulphate Pulp

The composites, containing recycled polypropylene and fillers, obtained from different lignocellulosics by the thermocatalytic destruction method, were investigated. Birch sawdust, newsprint wastes, cotton residues and wood bleached sulphate pulp were used as raw materials for obtaining fillers. The indices of mechanical properties (tensile strength, modulus of elasticity, deformation at break, shear modulus, toughness, twisting moment) of the composites' samples were determined. It has been found that the obtained composites have relatively good mechanical properties. Better results were obtained, using fillers from sawdust and wood pulp. After treating the fillers with rapeseed oil, their water vapour sorption and water retention value (WRV) decreased. In this case, the strength of the composites was higher.http://dx.doi.org/10.5755/j01.ms.17.2.484

Research on Miniature Thermoplastic Processing of Polyvinyl Alcohol Based Nanocomposites

2013 ◽  
Vol 380-384 ◽  
pp. 4224-4227
Author(s):  
Ming Fang Xie ◽  
Sheng Qiang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Polyvinyl Alcohol ◽  
Raw Materials ◽  
Great Influence ◽  
Theoretical Method ◽  
Process Conditions ◽  
Processing Conditions ◽  
Elongation At Break ◽  
Preparation Conditions

This paper discusses the synthesis and preparation of polyvinyl alcohol based nanocomposites through the use of miniature thermoplastics processing technology. It studies the influence of different process conditions, the amount of raw materials and water on the processing performance, tensile strength and elongation at break of polyvinyl alcohol based nanocomposites. Studies have shown that using two miniature thermoplastic processes does not have much influence on the mechanical properties of polyvinyl alcohol based nanocomposites, different amount of polyvinyl alcohol will lead to enhancement of the tensile strength of the polyvinyl alcohol based nanocomposites system by the increasing amount of glycerin, and the water content has a great influence on the performance of polyvinyl alcohol based nanocomposites. To this end, according to the analysis of experimental results, it can obtain preparation conditions and influencing factors of polyvinyl alcohol based nanocomposites with the miniature thermoplastic processing conditions, and provide a new theoretical method and means for nanocomposites.

scholarly journals Evaluation of Composite Material used in the Wings of Typical Airplane based on Stress Analysis

2018 ◽  
Vol 3 (11) ◽  
pp. 37-41
Author(s):  
Tawfeeq W. Mohammed ◽  
Dalmn Yaseen Taha ◽  
Rafal R. Abdul-Ilah
Keyword(s):  
Experimental Data ◽  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Material ◽  
Carbon Fiber ◽  
Glass Fiber ◽  
Raw Materials ◽  
Stress Test ◽  
Mechanical Tests ◽  
Bending Stress

This research has focused on the evaluation of raw materials that used in the wings of modern airplane. These materials either would be fiberglass, carbon-fiber or aramid based composites like Kevlar. These common materials have been selected and evaluated depending on experimental data obtained from mechanical tests. These tests include: hardness, tensile strength and bending stress. The tests based on ASTM standards for mechanical properties. The results show increasing in the hardness value of graphite-epoxy by 9% comparing with that of fiberglass and by 18% comparing with that of Kevlar-epoxy. The results also show an increasing in the maximum tensile strength of graphite-epoxy by 2.9 times to that of fiberglass and by 5.5 times to that of Kevlar-epoxy. Furthermore, the results of bending stress test show increasing of the maximum strength of Kevlar-epoxy by 30% comparing to that of glass fiber and by 75% comparing to that of graphite-epoxy.

scholarly journals Sintering and mechanical properties of porcelains prepared from algerian raw materials

Cerâmica ◽  
2011 ◽  
Vol 57 (344) ◽  
pp. 453-460 ◽  
Author(s):  
S. Kitouni ◽  
A. Harabi
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Bulk Density ◽  
Phase Diagrams ◽  
Heating Rate ◽  
Ternary Phase ◽  
Raw Materials ◽  
Micro Hardness ◽  
Ternary Phase Diagrams

Porcelain is a type of ceramics highly valued for its beauty and strength. The overall goal of this work is to utilize local raw materials within the following fractions: 37 wt.% kaolin, 35 wt.% feldspar and 28 wt.% quartz. This composition has been selected on the basis of the ternary phase diagrams (kaolin-feldspar-quartz). The densification behaviour indicated that specimens sintered at 1200 °C for 2 h with a heating rate of 5 °C/min, have a bulk density of about 2.50 g/cm³. This value is slightly higher than that reported for the conventional porcelain products (2.45 g/cm³). Porcelain specimens with and without calcination sintered at 1200 °C for 2 h have tensile strength values of about 45 and 73 MPa, respectively (equivalent flexural strength values of about 122 and 197 MPa, respectively). The flexural strength values of both specimens are much higher than those reported for conventional porcelains (ranged between 60 and 80 MPa). Furthermore, the value of micro-hardness of the fired samples without calcination at 1200 °C is 9.3 ± 0.2 GPa which is higher than the commercial porcelain products (5.5 GPa).

Investigation on Fabrication of Glass Fiber Reinforced Polypropylene by Recycled FRTP and their Properties

2013 ◽  
Vol 364 ◽  
pp. 727-733
Author(s):  
Jing Li Ma ◽  
Huan Lin Jin ◽  
Zheng Bing Cao ◽  
Shang De Wang ◽  
Jun Liang Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Glass Fiber ◽  
Raw Materials ◽  
Fiber Reinforced ◽  
Thermal Stabilities ◽  
Polypropylene Composites ◽  
Glass Fiber Reinforced ◽  
Screw Extrusion ◽  
Micro Structures

In this paper, glass fiber reinforced polypropylene composites have been successfully fabricated via double screw extrusion by using mechanical crushed leftover materials as the raw materials with maleic anhydride grafted polypropylene (PP-g-MAH) and γ-ammonia propyl-triethoxy silane (KH-550) as the compatilizer and coupling agent, respectively. The influences of the contents of PP-g-MAH and KH-550 on the micro-structures and crystallization as well as mechanical properties of the fabricated composites have been systematically investigated. The results showed that: the recycled raw materials were homogenously dispersed in the polymer matrix without obvious agglomerations; with adding the recycled raw materials and compatilizer, the crystallization behaviors of PP did not changed dramatically while their thermal stabilities were greatly improved; the tensile strength of the product increased by 14% while notched impact strength increased by 21% as the contents of PP-g-MAH and KH-550 were 10phr and 1phr, respectively.

scholarly journals Tapioca Waste-Methyl Methacrylate Irradiation for Biodegradable Plastic Raw Materials

2020 ◽  
Vol 21 (2) ◽  
pp. 74-80
Author(s):  
Akhmad Rasyid Syahputra ◽  
Tita Puspitasari ◽  
Santoso Prayitno ◽  
Ade Lestari Yunus
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Methyl Methacrylate ◽  
Raw Materials ◽  
Absorbed Dose ◽  
Biodegradable Plastic ◽  
Mechanical And Thermal Properties ◽  
Polymer Reaction ◽  
Gel Fraction ◽  
Dog Bone

Nuclear technology can be applied not only as an energy (electricity) but also in industry as as an initiator on polymer reaction. Tapioca waste is used due to its biodegradability properties. Tapioca waste gel is formed by adding equal aquades ratio to waste weight. After gel formed, several concentrations of methyl methacrylate (w/w) is added to the gel then packed into 150 mL ampule. Using Co-60 gamma irradiation source, gel is irradiated at 5 kGy absorbed dose. Gel is extracted using acetone to get rid of sample from impurities. Glycerol as a plasticizer is added to the gel to increase polymer flexibility. Gel-Glycerol mixing is done at 60ºC, 250 rpm for one hour by adding aquadest. To analyze mechanical properties, firstly, we need to mold samples using pressurized-hot press machine. Film is formed to type 5 specimen (dog bone, astm d638-14). Specimen is tested by analyzing tensile strength characteristics. Fabrication of biodegradable plastic based packaging by using starch has an increasement of mechanical and thermal properties at 5 kGy absorbed dose. Methyl methacrylate 25, 50, 75, 100, 125 and 150% addition to the solution has 10-24 MPa tensile strength. Gel fraction has range between 88-100%. Even the lowest ratio of monomer addition can provide highest gel fraction to improve mechanical properties of tapioca waste. 

Heat-resistant antiflaming and friction mechanisms in nano-Fe2O3-reinforced silicon rubber

2013 ◽  
Vol 20 (4) ◽  
pp. 331-335 ◽  
Author(s):  
Bin Zhao ◽  
Qilei Wang ◽  
Lin Jin
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
High Temperature ◽  
Heat Resistance ◽  
Friction Mechanisms ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Maximum Elongation ◽  
Heat Resistant ◽  
Good Heat

AbstractA ferric oxide (Fe2O3)/silicone rubber (SR) composite was prepared to produce a magnetic rubber with good heat-resistant and friction properties: SR and nano-Fe2O3 were used as its raw materials. The heat-resistant, antiflaming, magnetic, and mechanical properties of such composites with different proportions of nano-Fe2O3 were studied. The results showed that the Fe2O3 nanoparticles were uniformly distributed throughout the composites. The physical and mechanical properties of SR were improved when Fe2O3 nanoparticles were added. The maximum elongation and tensile strength of the composites were relatively good when the ratio of Fe2O3 was 20 phr. The heat-resistance and antiflaming properties of SR were improved by adding nano-Fe2O3, which had good combined heat resistance. The friction properties of these composites were optimal at 20 phr addition of nano-Fe2O3, which laid the foundation for further applications of this type of composite in high-temperature sealing and shock absorption environments.

Physical properties of lyocell-reinforced polypropylene composites from intermingled fibre with varying fibre volume fractions

2017 ◽  
Vol 31 (8) ◽  
pp. 1029-1041 ◽  
Author(s):  
Michael Cordin ◽  
Thomas Bechtold
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
High Performance ◽  
Raw Materials ◽  
Moisture Sorption ◽  
Cellulose Fibre ◽  
Fibre Volume ◽  
Textile Fibre ◽  
Cellulose Fibres ◽  
Cellulose Composites

Polypropylene (PP)-cellulose fibre blends exhibit substantial potential for the production of high-performance textile fibre–reinforced composites. The production of reinforced parts from PP-cellulose composites through thermal shaping of intermingled fibre blends is a strategy to form parts which exhibit superior mechanical properties. In this study, the use of intermingled fibre slivers with different ratios of lyocell fibres (CLY) and PP fibres as raw materials for thermally formed composites was investigated. Such a concept will maximize the interface between the reinforcement fibres and polymer matrix. The cellulose fibres remain oriented along the direction in which the drawing process was performed, which forms the basis for tailored fibre placement in technical production. Because of good surface contact between the cellulose fibre surface and PP matrix, no special coupling agents were required to improve the interfacial adhesion between the two different polymers. The share of CLY and PP fibres in the composite varied from 50% w/w CLY content, up to 70% w/w CLY. Besides analysis of the mechanical properties, such as tensile strength and E-modulus, attention was directed towards moisture sorption of the composites. The rate of sorption and amount of water bound in the composite were found to be dependent on the cellulose fibre content. Composites with a higher CLY content exhibited a more rapid and higher moisture uptake. In water saturated state, the ultimate tensile strength of composites reduced from 160 MPa to 90 MPa, which is an indicator for a reduced adhesion between the CLY surface and PP matrix. The results indicate the potential of the intermingled fibre concept blend for the efficient manufacturing of composite parts.

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