scholarly journals Study of the Mechanical and Morphology Properties of Recycled HDPE Composite Using Rice Husk Filler

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Jia Ying Tong ◽  
Nishata Royan Rajendran Royan ◽  
Yong Chuen Ng ◽  
Mohd Hafizuddin Ab Ghani ◽  
Sahrim Ahmad
Keyword(s):  
Impact Strength ◽  
Rice Husk ◽  
Morphological Properties ◽  
Flexural Properties ◽  
Twin Screw Extrusion ◽  
Screw Extrusion ◽  
Twin Screw ◽  
The Impact ◽  
Extrusion Method ◽  
Recycled Hdpe

WPCs are being used in a large number of applications in the automotive, construction, electronic, and aerospace industries. There are an increasing number of research studies and developments in WPC technology involving rice husk as fillers. This study investigated the effects of different compositions of rice husk (RH) filler on the mechanical and morphological properties of recycled HDPE (rHDPE) composite. The composites were prepared with five different loading contents of RH fibers (0, 10, 20, 30, and 40 wt%) using the twin screw extrusion method. Maleic acid polyethylene (MAPE) was added as a coupling agent. Results showed that tensile and flexural properties improved with increasing RH loading. However, the impact strength of the composites decreased as the RH loading increased. SEM micrographs revealed good interfacial bonding between the fiber and polymer matrix.

Cellulolytic Enzyme Lignin Efficiently Blended with Polycaprolactone: Thermal, Mechanical Properties and Morphological Evaluation

2014 ◽  
Vol 1070-1072 ◽  
pp. 100-106
Author(s):  
Wen Zhu Ouyang ◽  
Yong Huang
Keyword(s):  
Mechanical Properties ◽  
Mechanical Test ◽  
Cellulolytic Enzyme ◽  
Twin Screw Extrusion ◽  
Morphological Evaluation ◽  
Screw Extrusion ◽  
Thermal Mechanical Properties ◽  
Twin Screw ◽  
The Cost ◽  
The Impact

In this study, cellulolytic enzyme lignin (CEL) was blended with polycaprolactone (PCL) by twin-screw extrusion and injection molding. The thermal, mechanical properties and the morphology of the PCL/CEL blends were investigated as a function of CEL content. The results showed that the CEL in the blends acting as nucleus accelerated the crystallization of PCL when CEL was not more than 10 wt%, but retarded PCL to crystallize with more CEL addition. Thermogravimetry analysis (TGA) revealed that the thermal stability of the PCL/CEL blends was almost unaffected by increasing CEL content. Mechanical test showed that, although the elongation at break and the impact strength were decreased, the strength and the modulus of the PCL/CEL blends were significantly higher than those of the neat PCL. Scanning electron microscopy (SEM) observations indicated that the CEL and the PCL were in good miscibility and there was a good adhesion at the interface of the CEL filler and the PCL matrix, suggesting that CEL could be potential filler used in PCL-based materials to reduce the cost of the friendly material, whereas increased its strength and modulus.

On secondary recycling of ZrO2-reinforced HDPE filament prepared from domestic waste for possible 3-D printing of bearings

2019 ◽  
pp. 089270571986462 ◽  
Author(s):  
Rupinder Singh ◽  
Ranvijay Kumar ◽  
Shubham Tiwari ◽  
Shubham Vishwakarma ◽  
Shivam Kakkar ◽  
...  
Keyword(s):  
Acrylonitrile Butadiene Styrene ◽  
Melt Flow Index ◽  
Melt Processing ◽  
Thermoplastic Composites ◽  
Flow Index ◽  
Wear Properties ◽  
Twin Screw Extrusion ◽  
Screw Extrusion ◽  
Twin Screw ◽  
Recycled Hdpe

In this study, an innovative route for secondary recycling (with zirconium oxide (ZrO2) reinforcement) has been proposed based on melt processing of high-density polyethylene (HDPE) in low-temperature bearing applications. Initially, secondary recycled HDPE, acrylonitrile butadiene styrene, and nylon 6 thermoplastic composites were investigated for melt flow index (MFI) according to ASTM D1238 standard. Based on the acceptable MFI, secondary recycled HDPE matrix was selected for second-stage processing on twin screw extrusion (TSE). The final process involves reinforcement of ZrO2 into HDPE matrix by TSE in 60:40 ratio (by weight %) for preparation of feedstock filament (for possible 3-D printing of bearings). The results of the study suggest that for processing of HDPE, 40% ZrO2 composite matrix, 50 r min−1 screw speed, 190°C barrel temperature, and 15 kg applied load are the best setting of TSE (for maximizing the tensile strength of feedstock filament). The results are also supported by wear properties, thermal stability, and morphological analysis (based on scanning electron microscopy and electron-dispersive X-ray analysis).

scholarly journals Studies on Mechanical, Thermal, and Morphological Properties of Glass Fibre Reinforced Polyoxymethylene Nanocomposite

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
K. Mohan Babu ◽  
M. Mettilda
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Glass Fibre ◽  
Morphological Properties ◽  
Flexural Properties ◽  
Moulding Process ◽  
Sem Image ◽  
Injection Moulding Process ◽  
Twin Screw ◽  
Water Absorption Property

Polyoxymethylene is a material which has excellent mechanical properties similar to Nylon-6 filled with 30% GF. 75% POM and 25% glass fibre (POMGF) were blended with nanoclay to increase the tensile and flexural properties. Samples were extruded in twin screw extruder to blend POMGF and (1%, 3%, and 5%) Cloisite 25A nanoclay and specimens were prepared by injection moulding process. The tensile properties, flexural properties, impact strength, and hardness were investigated for the nanocomposites. The fibre pull-outs, fibre matrix adhesion, and cracks in composites were investigated by using scanning electron microscopy. 1% POMGF nanocomposite has low water absorption property. Addition of nanoclay improves the mechanical properties and thermal properties marginally. Improper blending of glass fibre and nanoclay gives low tensile strength and impact strength. SEM image shows the mixing of glass fibre and nanoclay among which 1% POMGF nanocomposite shows better properties compared to others. The thermal stability decreased marginally only with the addition of nanoclay.

Auto-hybridization of Polyethylene/Maple Composites: The Effect of Fiber Size and Concentration

2017 ◽  
Vol 25 (6) ◽  
pp. 471-482
Author(s):  
Wendy Rodriguez-Castellanos ◽  
Denis Rodrigue
Keyword(s):  
Impact Strength ◽  
Hybrid Composites ◽  
Tensile Modulus ◽  
Linear Low Density Polyethylene ◽  
Twin Screw Extrusion ◽  
Screw Extrusion ◽  
Fiber Size ◽  
Twin Screw ◽  
Long Fibers ◽  
Hybrid Mixtures

This work investigated the effect of maple fiber size and content on the auto-hybridization of linear low density polyethylene (LLDPE) composites. The samples were compounded by twin-screw extrusion and molded by compression molding. Different fiber loadings (5 to 20% wt.), fiber sizes (0-425 microns) and size ratios (30/70, 50/50, 70/30 of short, medium, and long fibers) were used to prepare the auto-hybrid composites with 3% of coupling agent (maleated polyethylene). Micrographs and impact strength results showed that the fracture in auto-hybrid composites is mostly dependent on the longer fibers. At 10% wt. the optimum ratio was 30/70 of shorter/longer fibers, which improved tensile strength (20%), tensile modulus (20%), and impact strength (13%) compared with composites with a single fiber size. But at 20% wt., tensile modulus increased by 30% and torsion modulus by 40% above the rule of hybrid mixtures (RoHM) at a 70/30 ratio of shorter/longer fibers.

scholarly journals Efficiency of Twin-Screw Extrusion of Biodegradable Poly (Butylene Succinate)-Wheat Bran Blend

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 424
Author(s):  
Emil Sasimowski ◽  
Łukasz Majewski ◽  
Marta Grochowicz
Keyword(s):  
Polymer Blend ◽  
Flow Rate ◽  
Wheat Bran ◽  
Rotational Speed ◽  
Twin Screw Extrusion ◽  
Butylene Succinate ◽  
Extrusion Processing ◽  
Screw Extrusion ◽  
Twin Screw ◽  
The Impact

Unmodified poly (butylene succinate) (PBS) is characterized by very good processability; however, after the incorporation of various fillers of plant origin, its processing becomes much more complicated and its properties are significantly affected. Detailed studies of the processing aspects of PBS/wheat bran (WB) biocomposition are lacking, despite the addition of WB having a significant impact on both the production efficiency and the properties of end products. This research paper presents test results of the co-rotating twin-screw extrusion processing of a biodegradable polymer blend, the matrix of which was PBS, with WB as the filler. In undertaking this task, we examined the impact of extruder screw rotational speed and WB content on the characteristics of extrusion processing, as well as on certain thermal, physical, structural and processing properties of the obtained blend. The WB introduced to the blend was in the form of a selected fraction with particles smaller than 0.2 mm. The measurements were conducted using the Design of Experiment (DOE) methods, which enabled establishing the studied relationships in the form of polynomials and response surfaces. The determined extrusion process characteristics covered the impact of screw rotational speed and WB content on the mass flow rate of the processed blend and its pressure, the screw drive torque and specific energy consumption. The studies of the obtained polymer blend included determining the impact of the aforementioned variable factors on the melt flow rate (MFR) index, chemical structure (FTIR), thermal properties (differential scanning calorimetry (DSC), thermogravimetry (TG), derivative thermogravimetry (DTG)), p-v-T relationships, microstructure, density and moisture absorbance. Analysis of variance (ANOVA) was used to assess the effect of individual variable factors. The results of this work are presented, inter alia, using Pareto charts of standardized effects, which illustrate the influence of individual terms of the determined regression equations on the studied quantity.

Red mud/polypropylene composite with mechanical and thermal properties

2011 ◽  
Vol 45 (26) ◽  
pp. 2811-2816 ◽  
Author(s):  
Yihe Zhang ◽  
Anzhen Zhang ◽  
Zhichao Zhen ◽  
Fengzhu Lv ◽  
Paul K. Chu ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Thermal Properties ◽  
Impact Strength ◽  
Flexural Strength ◽  
Red Mud ◽  
Softening Temperature ◽  
Mechanical And Thermal Properties ◽  
Twin Screw Extrusion ◽  
Twin Screw ◽  
The Impact

Polypropylene (PP) based composites containing 0, 5, 10, 15, 20, 30, and 50 wt% red mud are granulated by twin-screw extrusion and injection molding. Their mechanical properties such as tensile strength, flexural strength and modulus, impact strength, and thermal properties are determined. After filling with red mud, the flexural strength and modulus, thermal deformation temperature, and Vicat softening temperature increase, whereas the impact strength decreases with increasing red mud contents. The maximum tensile strength is observed from the PP doped with 15 wt% red mud. Scanning electron microscopy (SEM) is used to investigate the dispersion of red mud in the PP matrix.

Mechanical Properties of Chopped Carbon Fiber Reinforced PBS/CF Composites

2014 ◽  
Vol 989-994 ◽  
pp. 587-590
Author(s):  
Wei Li ◽  
Jin Ping Qu
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Tensile Properties ◽  
Flexural Properties ◽  
Fiber Reinforced ◽  
Twin Screw Extrusion ◽  
Impact Properties ◽  
Extrusion Processing ◽  
Screw Extrusion ◽  
Twin Screw

Chopped carbon fiber (CF) reinforced PBS/CF composites were prepared by twin-screw extrusion processing. The effect of adding a certain quantity of CF in composites on the tensile, flexural and impact properties have been investigated. The results indicated that the tensile properties, flexural properties and impact properties of the PBS/CF composites were first improved and then decreased with the increase of the content of CF.

Mechanical and Thermal Behaviors of the Acrylic Based Core-Shell Rubber Modified Poly(Lactic Acid)

2011 ◽  
Vol 306-307 ◽  
pp. 340-343 ◽  
Author(s):  
Nawadon Petchwattana ◽  
Sirijutaratana Covavisaruch ◽  
Nukul Euapanthasate
Keyword(s):  
Lactic Acid ◽  
Tensile Modulus ◽  
Degree Of Crystallinity ◽  
Poly Lactic Acid ◽  
Core Shell ◽  
Twin Screw Extrusion ◽  
Elongation At Break ◽  
Screw Extrusion ◽  
Twin Screw ◽  
The Impact

Toughening of poly(lactic acid) (PLA) biopolymer by particles of acrylic based core-shell rubber (CSR) was conducted to observe the influences of the rubber contents on the properties of the modified PLA. A series of PLA specimens modified with the CSR by 0.1-10 wt% was prepared by twin screw extrusion and injection. Diminishing brittleness was reflected in the dramatic increment of both the impact strength by threefolds and the elongation at break by fifteenfolds when CSR was employed by 10 wt%. The toughening was also accompanied with a decrease in the tensile modulus and strength. At low loading, the added CSR by 0.5wt% also assisted crystallization of the PLA by slightly lowering the crystallization temperature, allowing decreased processing time and improving the degree of crystallinity of the generally difficult to crystallize PLA.

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