Effect of water environment on jute/polypropylene composites

2011 ◽  
Vol 18 (1-2) ◽  
pp. 87-92 ◽  
Author(s):  
Tohru Morii ◽  
Seiji Tomioka ◽  
Hiroyuki Hamada
Keyword(s):  
Tensile Properties ◽  
Fiber Type ◽  
Water Immersion ◽  
Water Environment ◽  
Fiber Content ◽  
Jute Fiber ◽  
Weight Changes ◽  
Material Loss ◽  
Polypropylene Composites ◽  
Pp Composites

AbstractThis study investigates the effects of water immersion on tensile properties of jute fiber reinforced polypropylene (PP) composites. The long fiber type jute/PP pellet and neat PP pellet were used as materials and the jute/PP specimens with different fiber content were prepared by injection molding with dry-blending of jute/PP and neat PP pellets. All the specimens were aged in hot distilled water at 80°C, and after the fixed periods of immersion, the weight changes and the tensile properties were measured. The weight gain by water absorption was significantly affected by the fiber content. The specimens with the jute fiber content of 30 wt% more easily absorbed water and it reached more than 10%. In these specimens, significant material loss by immersion also occurred. The tensile strength after immersion decreased remarkably in the specimens with the jute fiber content of 30 wt% and more, and all the jute/PP composites showed lower strength than neat PP after immersion of 1000 h.

scholarly journals Variation of Mechanical Properties of Polypropylene Composites with the Additives Content: An Empirical Mathematical Modeling Study

2021 ◽  
Vol 13 (2) ◽  
pp. 611-621
Author(s):  
M. Mostafizur Rahman ◽  
Iftekhar Chowdhury ◽  
M. Mastabur Rahman
Keyword(s):  
Mathematical Modeling ◽  
Mechanical Properties ◽  
Tensile Properties ◽  
Rice Husk Ash ◽  
Jute Fiber ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Polypropylene Composites ◽  
Pp Composites ◽  
Potential Use

Polypropylene (PP) composites were prepared by using additives CaCO3/rice husk ash (RHA) as filler, low density polyethylene (LDPE) as modifier, and jute fiber as reinforcement. The effects of filler, modifier, and chemically treated and untreated jute fiber reinforcement on the mechanical properties of the PP composites were studied. The result shows that incorporation of RHA in the PP matrix improves the tensile properties up to 16% which is almost similar to that of CaCO3 incorporated PP composite. This result clearly indicates the potential use of RHA as filler in % LDPE, and 30 wt% jute fiber.

Hydrothermal Aging and Mechanical Property of Injection Molded Jute/Glass/Polypropylene Hybrid Composites

2013 ◽  
Author(s):  
Jian Wang ◽  
Putinun Uawongsuwan ◽  
Yuqiu Yang ◽  
Hiroyuki Inoya ◽  
Toshihiko Hojo ◽  
...  
Keyword(s):  
Hybrid Composites ◽  
Water Immersion ◽  
Fiber Content ◽  
Hot Water ◽  
Jute Fiber ◽  
Hydrothermal Aging ◽  
Immersion Experiment ◽  
Injection Molded ◽  
Pp Composites ◽  
Hot Water Immersion

As well known, the durability of the material is always considered in the safety design of the materials. Therefore in this study, the property of injection molded hybrid jute/glass reinforced polypropylene (PP) composites was firstly investigated after the hot water immersion experiment. The hydrothermal aging performance was investigated in the 80 °C hot water immersion experiment with a series of immersion time and different fraction of jute fiber and the effects of hot water immersion on the mechanical properties of composites have been evaluated based on the tensile test. Water absorption and weight loss of the reinforced PP composites were recorded and discussed. It is found that with the increase of jute fiber content, the tensile modulus is increased. However, the increasing of jute fiber content decreased the tensile strength of hybrid composites. For the effect of hydrothermal aging, the weight by water absorption was significantly affected by the jute fiber content. The specimens with higher jute fiber content absorbed water easier and significant materials loss by aging was also occurred. Tensile properties of hybrid composites which contain jute fiber showed the lower tensile strength than the monotonic glass/PP composite. It is considered that the hydrophilic property of jute fiber decreases the resistance of the hybrid composite in high humidity environment.

Study on Ramie Fiber Reinforced Polypropylene Composites (RF-PP) and its Mechanical Properties

2008 ◽  
Vol 41-42 ◽  
pp. 313-316 ◽  
Author(s):  
Li Ping He ◽  
Yong Tian ◽  
Lu Lin Wang
Keyword(s):  
Mechanical Properties ◽  
Fiber Length ◽  
Fiber Content ◽  
Ramie Fiber ◽  
Fiber Reinforced ◽  
Polypropylene Composites ◽  
Environmental Friendly ◽  
Pp Composites ◽  
Pre Treatment ◽  
The Impact

Natural fiber reinforced polypropylene composites (NF/PP) have attracted a lot of attention because of their light weight, good mechanical properties, recyclable and environmental friendly features. This work has successfully fabricated ramie fiber reinforced polypropylene composites (RF/PP) with a hybrid method of melt-blending and injection molding. Different RF/PP eco-materials have been fabricated by varying the fiber length, fiber content and way of fiber pre-treatment. This paper studied the mechanical properties of the fabricated RF/PP composites in depth by investigating the mechanical behaviors of RF/PP and microstructures of the ruptured surfaces. The results show that the increases of fiber length and fiber content can improve the tensile strength, flexural strength and compression strength apparently, but result in negative influences on the impact strength and elongation behaviors of RF/PP composites. The optimal addition amount of ramie fiber is around 20 wt%. The pre-treatment of ramie fiber in 10%~15% NaOH is good to the mechanical properties of RF/PP. The fiber length can be varied in the range of 3-8 mm. It is expected that the fabricated RF/PP composites can be applied to automobile industry as environmental friendly eco-materials.

scholarly journals Tensile Performance of 3D-Printed Continuous Fiber-Reinforced Nylon Composites

2021 ◽  
Vol 5 (3) ◽  
pp. 68
Author(s):  
Mahdi Mohammadizadeh ◽  
Ismail Fidan
Keyword(s):  
Tensile Properties ◽  
Mechanical Performance ◽  
Fiber Type ◽  
Microstructural Analysis ◽  
Fiber Content ◽  
Fiber Reinforced ◽  
Continuous Fiber ◽  
Fused Filament Fabrication ◽  
Wide Range ◽  
Tensile Performance

Fused Filament Fabrication (FFF) is a promising technology for production of fiber-reinforced composite parts with complex geometries. Continuous Fiber Reinforced Additively Manufactured (CFRAM) parts are becoming more prominent due to their mechanical performance, light weight, and recyclability. CFRAM components are lighter, yet they are strong materials with a wide range of potential applications in the automotive industry, aerospace, medical tools, and sports goods. The wide range of applications of these novel materials justifies the need to study their properties. Tensile is one of the most important tests to evaluate the mechanical performance of CFRAM parts. In this paper, a comprehensive study is conducted on tensile properties of CFRAM components. The composite parts are printed using a dual nozzle 3D printing machine and their tensile performance is investigated. Furthermore, the effect of fiber type, fiber content, infill density, infill pattern, and layer thickness on tensile properties was studied. Nylon was used as the matrix and Carbon fiber (CF), fiberglass (FG), and Kevlar were used as reinforcing agents. Microstructural analysis was conducted to investigate the fracture mechanism, internal morphology, interlayer adhesion, and the printing quality of specimens. Finally, a comparative study is conducted on the price and printing time of CFRAM parts. It is observed that fiber inclusion increases the tensile strength up to 2200%; moreover, increasing the fiber content improves the tensile performance of composite. The results obtained demonstrate that CF-reinforced parts have better performance compared to FG and Kevlar-reinforced components. The results show that CFRAM parts have potential to replace metals and conventional composites for engineering applications like the automobile industry.

scholarly journals Improving the mechanical properties of polypropylene composites with coconut shell particles

2021 ◽  
Vol 30 ◽  
pp. 263498332110074
Author(s):  
Henry C Obasi ◽  
Uchechi C Mark ◽  
Udochukwu Mark
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Flexural Modulus ◽  
Filler Particle ◽  
Tensile Modulus ◽  
Coconut Shell ◽  
Polypropylene Composites ◽  
Increase With Increase ◽  
Pp Composites ◽  
Shell Particles

Conventional inorganic fillers are widely used as fillers for polymer-based composites. Though, their processing difficulties and cost have demanded the quest for credible alternatives of organic origin like coconut shell fillers. Dried shells of coconut were burnt, ground, and sifted to sizes of 63, 150, 300, and 425 µm. The ground coconut shell particles (CSP) were used as a filler to prepare polypropylene (PP) composites at filler contents of 0% to 40% via injection melt blending process to produce PP composite sheets. The effect of the filler particle size on the mechanical properties was investigated. The decrease in the size of filler (CSP) was found to improve the yield strength, tensile strength, tensile modulus, flexural strength, flexural modulus, and hardness of PP by 8.5 MPa, 15.75 MPa, 1.72 GPa, 7.5 MPa, 100 MPa, and 10.5 HR for 63 µm at 40%, respectively. However, the elongation at break and modulus of resilience of the PP composites were seen to increase with increase in the filler size. Scanning electron microscope analysis showed that fillers with 63 µm particle size had the best distribution and interaction with the PP matrix resulting in enhanced properties.

Molding Conditions and Mechanical Properties of Jute Fiber Reinforced Composite

2010 ◽  
Vol 452-453 ◽  
pp. 261-264 ◽  
Author(s):  
Kenichi Takemura
Keyword(s):  
Tensile Strength ◽  
Tensile Test ◽  
Tensile Properties ◽  
Jute Fiber ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Molding Temperature ◽  
High Fiber ◽  
Reinforced Composite ◽  
Molding Condition

In this study, molding condition and tensile properties of jute fiber reinforced composite were examined. PVA resin was used as matrix which is one of the biodegradable resin. Before tensile test, specimens have an offset twist. The tensile test after twist of jute fiber cloth was also conducted. As a result, following results were obtained. In the case of jute fiber cloth, the effect of twist deformation to tensile strength is not great. The reason is thought that the fiber cloth is flexible and easy to deform in this form. In the case of composite, molding time has an effect to the tensile properties. As the molding temperature increases, the tensile strength increases. So, the diffraction intensity was measured. The reason of effect to the strength is thought that the crystallization occurred in the matrix. When the molding temperature is so high, fiber has degradation, and the strength of the composite decreases. As the degree of twist increases, the strength decreases. The reasons are the delamination between layers and debonding between fiber and matrix.

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