scholarly journals Effects of Process Parameters in the Production of High Density Polyethylene-Grass Composite

2018 ◽  
Vol 22 (9) ◽  
pp. 1479
Author(s):  
DD Olodu ◽  
JO Osarenmwinda
2020 ◽  
Vol 994 ◽  
pp. 189-196
Author(s):  
Aleš Mizera ◽  
Tomáš Fiala ◽  
Miroslav Manas ◽  
Pavel Stoklásek ◽  
Martin Ovsik

Commodity polymers are a common part of everyday life. They consist mainly of polyolefins such as polyethylene, polypropylene. They are primarily used for ease of processing, cost and especially chemical resistance. The disadvantages of these polymers are low mechanical properties as well as temperature resistance. Any improvement in the mechanical properties can extend the application possibilities of the commodity polymers to the areas reserved for the construction polymers. This paper deals with changing two injection moulding process parameters - melt and mould temperature to high-density polyethylene (HDPE) surface hardness. HDPE hardness was measured using the method of Depth-Sensing Indentation (DSI) on three different instruments (ultranano-, nanoand micro-hardness tester). It has been found that as the melt and mould temperature increases, the hardness slightly increases.


2018 ◽  
Vol 136 ◽  
pp. 146-152 ◽  
Author(s):  
Zeyou Pan ◽  
Xiangfei Xue ◽  
Changsen Zhang ◽  
Dengtai Wang ◽  
Yunyun Xie ◽  
...  

2018 ◽  
Vol 28 (2) ◽  
pp. 149-160
Author(s):  
ELHADJ RAOUACHE ◽  
Zakaria BOUMERZOUG ◽  
Selvarajan RAJAKUMAR ◽  
Fares KHALFALLAH

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 19
Author(s):  
Wieslaw Lyskawinski ◽  
Mariusz Baranski ◽  
Cezary Jedryczka ◽  
Jacek Mikolajewicz ◽  
Roman Regulski ◽  
...  

The aim of this study was to investigate and analyze the separation process of poly (ethylene terephthalate) and high-density polyethylene mixture. The research studied the influence of parameters of tribocharging and separation processes on the quality of separation. The research was carried out using a developed test stand consisting of a test tribocharger and a dedicated drum-type electrostatic separator. Both the separator and the tribocharger have been designed as automated test benches to assess the quality of plastic separation. In order to assess the quality of electrostatic separation of plastics, an original method based on the use of a dedicated vision system was used. The research was conducted in two stages. Firstly, the influence of the tribocharging process parameters on the efficiency of the process, i.e., the charge collected, was investigated. The next stage of the research was focused on the analysis of the influence of the separation process parameters on its effectiveness. The obtained results were presented and discussed. On the basis of the conducted research, the parameters of the tribocharging and separation processes affecting their effectiveness were determined.


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