Fabrication of HDPE composites via a novel friction stir processing technology

2018 ◽  
Vol 32 (10) ◽  
pp. 1305-1318
Author(s):  
Jicheng Gao ◽  
Xixi Cui ◽  
Yifu Shen ◽  
Liang Yu
Keyword(s):  
Tensile Strength ◽  
Surface Layer ◽  
Friction Stir Processing ◽  
High Density Polyethylene ◽  
Processing Parameters ◽  
High Density ◽  
Processing Technology ◽  
Friction Stir ◽  
The Matrix

In this article, the feasibility of preparing high-density polyethylene (HDPE)/copper (Cu) composites by submerged friction stir processing was investigated. The results showed that the Cu powders were dispersed with the flow of matrix in the action of stir. The surface layer of the composites was more uniform than core, and the advancing side was more homogenous than retreating side. The crystalline content of HDPE/Cu composites was higher than the processing materials without Cu powders. Compared with the matrix, the tensile strength of composites was lower, however, higher than that processing samples under the same processing parameters. The microhardness of composites was higher than either the matrix of the sample without Cu powders.

Investigations into the mechanical, morphological and thermal analyses of friction stir processing of high-density polyethylene composites

2016 ◽  
Vol 232 (7) ◽  
pp. 1193-1200 ◽  
Author(s):  
Jicheng Gao ◽  
Chao Li ◽  
Yifu Shen
Keyword(s):  
Tensile Strength ◽  
Friction Stir Processing ◽  
High Density Polyethylene ◽  
Thermal Analyses ◽  
Experimental Tests ◽  
Traverse Speed ◽  
High Density ◽  
Scanning Calorimetry ◽  
Friction Stir ◽  
Polyethylene Composites

The aim of this work is to fabricate the high-density polyethylene–copper composites by submerged friction stir processing at different traverse speeds. The scanning electron microscopy is used to analyze the distribution of microstructure and particles. The experimental results indicated that the macrostructure morphology, microstructure and tensile strength vary depending on the traverse speed. Compared with the pure high-density polyethylene, Cu-filled polymer composites showed lower tensile strength and higher microhardness. The maximal values of the tensile strength and microhardness were achieved at traverse speeds of 30 and 15 mm/min, respectively. The thermal properties of Cu-filled high-density polyethylene composites were studied by differential scanning calorimetry. The crystalline content of the composites was decreased due to the addition of copper. From the experimental tests, it can be concluded that submerged fiction stir processing has a great potential for producing polymer–metal composites.

Effect of Process Parameters on Defect Formation in Friction Stir Processed 6082-T6 Aluminium Alloy

2012 ◽  
Vol 232 ◽  
pp. 3-7
Author(s):  
Akinlabi Esther Titilayo ◽  
Akinlabi Stephen Akinwale
Keyword(s):  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Aluminium Alloy ◽  
Process Parameters ◽  
Friction Stir Processing ◽  
Feed Rate ◽  
Rotational Speed ◽  
Defect Formation ◽  
Processing Parameters ◽  
Friction Stir

This paper reports the effects of processing parameters on defects formed during friction stir processing of 6082-T6 Aluminium Alloy. The plates were processed by varying the feed rate between 50 and 250 mm/min, while the rotational speed was varied between 1500 and 3500 rpm to achieve the best result. It was observed that the sheets processed at the highest feed rate considered in this research resulted in wormhole defect. These processed samples with defects were correlated to the tensile results and it was found that the Ultimate Tensile Strength (UTS) of these samples was relatively low compared to other samples without defects.

Fabrication of high-density polyethylene/multiwalled carbon nanotube composites via submerged friction stir processing

2016 ◽  
Vol 30 (2) ◽  
pp. 241-254 ◽  
Author(s):  
Jicheng Gao ◽  
Yifu Shen ◽  
Chao Li
Keyword(s):  
Thermal Properties ◽  
Friction Stir Processing ◽  
Rotational Speed ◽  
High Density Polyethylene ◽  
Traverse Speed ◽  
High Density ◽  
Mechanical And Thermal Properties ◽  
Scanning Calorimetry ◽  
Multiwalled Carbon ◽  
Friction Stir

The focus of this work was to study the effect of multiwalled carbon nanotubes (MWCNTs) on morphology, mechanical, and thermal properties of high-density polyethylene (HDPE) nanocomposites. MWCNTs/HDPE nanocomposites were prepared using submerged friction stir processing (SFSP) technique. The pristine MWCNTs without any pretreatment were blended with HDPE at a fixed traverse speed of 30 mm min−1 and various rotational speeds ranging from 1200 r min−1 to 2100 r min−1. The effect of rotational speed on MWCNTs dispersion in HDPE matrix was assessed using scanning electron microscopy. The experimental results showed the rotational speed affected the disperision of the MWCNTs. The mechanical properties of the composites were measured, and the results indicated that the tensile strength increased at first and then decreased with the increase of the rotation speed. The thermal properties of MWCNTs-filled HDPE nanocomposites were studied by differential scanning calorimetry, and the crystalline content of the prepared composites by the SFSP technology was increased. From the experimental research, it was found that the SFSP technique was a practical way to fabricate polymeric composites.

scholarly journals EFFECT OF FRICTION STIR PROCESSING PARAMETERS ON THE TENSILE STRENGTH OF SURFACE COMPOSITE ALUMINUM ALLOY.

2017 ◽  
Vol 5 (1) ◽  
pp. 2061-2065 ◽  
Author(s):  
Essam Moustafa ◽  
◽  
Samah Mohammed ◽  
Sayed Abdel-Wanis ◽  
Tamer Mahmoud ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Aluminum Alloy ◽  
Friction Stir Processing ◽  
Processing Parameters ◽  
Friction Stir ◽  
Surface Composite

scholarly journals Leather Waste to Enhance Mechanical Performance of High-Density Polyethylene

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2016 ◽  
Author(s):  
Eylem Kiliç ◽  
Quim Tarrés ◽  
Marc Delgado-Aguilar ◽  
Xavier Espinach ◽  
Pere Fullana-i-Palmer ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
High Density Polyethylene ◽  
Mechanical Performance ◽  
Low Cost ◽  
Impact Resistance ◽  
High Density ◽  
Polyethylene Matrix ◽  
The Matrix ◽  
High Impact Strength

Leather buffing dust (BF) is a waste from tannery which is usually disposed on landfills. The interest in using wastes as fillers or reinforcements for composites has raised recently due to environmental concerns. This study investigates the potential use of BF waste as filler for a high density polyethylene matrix (HDPE). A series of HDPE-BF composites, containing filler concentrations ranging from 20 to 50wt%, were formulated, injection molded and tested. The effect of filler contents on the mechanical properties of the composites were evaluated and discussed. Composites with BF contents up to 30wt% improved the tensile strength and Young’s modulus of the matrix, achieving similar mechanical properties to polypropylene (PP). In the case of flexural strength, it was found to be proportionally enhanced by increasing reinforcement content, maintaining high impact strength. These composites present great opportunities for PP application areas that require higher impact resistance. The materials were submitted to a series of closed-loop recycling cycles in order to assess their recyclability, being able to maintain better tensile strength than virgin HDPE after 5 cycles. The study develops new low-cost and sustainable composites by using a waste as composite filler.

scholarly journals Optimization of Friction Stir Processing Parameters for Aluminum Alloy (AA6061-T6) Using Taguchi Method

2019 ◽  
Vol 12 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Muna K. Abbassa ◽  
Noor Alhuda B. Sharhan
Keyword(s):  
Tensile Strength ◽  
Aluminum Alloy ◽  
Ultimate Tensile Strength ◽  
Taguchi Method ◽  
Friction Stir Processing ◽  
Thick Plate ◽  
Processing Parameters ◽  
Friction Stir ◽  
Tool Tilt Angle

This work is devoted toward optimization of the parameters of the friction stir processing (FSP) which effect on tensile strength of aluminium alloy AA6061-T6 of 6mm thick plate by applying a certain number of tests utilizing the Taguchi method. Design of experiment (DOE) has been applied for the determination of the most important parameters influencing ultimate tensile strength. FSP was achieved under three different rotation speeds (800,1000 and 1250) rpm, different transverse speeds (16,25 and 32) mm\min, and number passes(1,2 and 3)  in the same direction and tool tilt angle was 2°  with using threaded cylindrical pin profile.  The best FSP parameters were 1250 rpm and 32 mm\min and two passes. It was found that the higher hardness value was 75HV in stir zone center and then decreases toward the TMAZ, HAZ and the base metal

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