Effect of Die Drawing Process on the Mechanical Behaviour of Polypropylene

Mourad, Abdel‐Hamid I.; Bekheet, N.; El-Butch, A. M. A.; Abdel-Latif, Lotfi A.; Nafee, D.

doi:10.4028/www.scientific.net/kem.261-263.1677

Cited by 3 publications

(4 citation statements)

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“…According to the grey relational analysis performed by their group, a barrel temperature of 240 °C was concluded to be the optimum for the processing of neat HDPE [ 5 ]; as the barrel temperature was increased from 200 °C to 240 °C, a slight increase in tensile strength was observed. Moreover, the effect of processing conditions was studied by Mourad et al [ 54 , 55 ] on die drawn polypropylene, and it was found that the compression modulus and yield strength increased with a higher processing temperatures. Zhang et al [ 52 ] studied the effect of processing temperature on PP/LLDPE injection molded bars and observed a trend similar to the present study, that is, at high temperatures, the strength of the polymeric materials was found to be low.…”

Section: Resultsmentioning

confidence: 99%

On the Injection Molding Processing Parameters of HDPE-TiO2 Nanocomposites

et al. 2017

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In recent years, the development and use of polymeric nanocomposites in creating advanced materials has expanded exponentially. A substantial amount of research has been done in order to design polymeric nanocomposites in a safe and efficient manner. In the present study, the impact of processing parameters, such as, barrel temperature, and residence time on the mechanical and thermal properties of high density polyethylene (HDPE)-TiO2 nanocomposites were investigated. Additionally, scanning electron microscopy and X-ray diffraction spectroscopy were used to analyze the dispersion, location, and phase morphology of TiO2 on the HDPE matrix. Mechanical tests revealed that tensile strength of the fabricated HDPE-TiO2 nanocomposites ranged between 22.53 and 26.30 MPa, while the Young’s modulus showed a consistent increase as the barrel temperature increased from 150 °C to 300 °C. Moreover, the thermal stability decreased as the barrel temperature increased.

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Section: Resultsmentioning

confidence: 99%

On the Injection Molding Processing Parameters of HDPE-TiO2 Nanocomposites

et al. 2017

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“…However, the effect of some more parameters that have adverse effect on the performance of polymeric materials in general should be studied such as process parameters, high strain rate effects, etc. [43][44][45][46][47] The effects of all these parameter are the main objectives of our ongoing research project on greenhouse covers. Further…”

Section: Resultsmentioning

confidence: 99%

On use of trilayer low density polyethylene greenhouse cover as substitute for monolayer cover

Mourad

Dehbi

2014

Plastics, Rubber and Composites

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Few attempts are available in the literature on utilising the trilayer low density polyethylene (LDPE) film as new generation of greenhouse cover to substitute the monolayer film that is often used. This paper investigates and compares the degradation behaviour and durability of both covers. The covers are exposed to 7 months of natural withering. The results revealed that the degradation resistance of trilayer film is better than the monolayer film in terms of their mechanical and optical properties. The service lifespan, based on 50% reduction in the property criterion, of the trilayer film is found to be double the service lifespan of the monolayer film.

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“…Apart from ensuring a define geometry of products, die drawing is more attractive owing to its high production rates, good controllability of final product structure, and applicability to nearly all the common thermoplastic polymers . Numerous studies have investigated the effect of processing parameters on one‐stage die‐drawn polypropylene (PP) and elaborated the relationship among draw ratio, drawing speed, and temperature with the mechanical properties of die‐drawn PP. Compared with conventional one‐stage die drawing, it has been verified that better regulation of structure and properties, dimensional stability and drawability could be realized through the two‐stage die‐drawing process .…”

Section: Introductionmentioning

confidence: 99%

“…Various complex crystalline structures can be formed with different processing methods or distinct conditions during the same processing method. Furthermore, PP and its blends account for a large proportion in the materials made for existed die‐drawing products, such as rods, tubes, sheet, and so on . Considering all these factors, PP is selected as the most appropriate materials for parameter optimization during two‐stage solid die‐drawing process.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Processing Parameters on the Crystalline, Orientation, and Mechanical Properties of Two‐Stage Die‐Drawn Polypropylene

Yang

Luo

et al. 2019

Polymer Engineering & Sci

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An investigation specifically focusing on the relationship among processing parameters, structure, and mechanical properties of solid two‐stage die‐drawn polypropylene (PP) has been done in this study, which aimed at providing a reliable reference in the choose of appropriate conditions that can be able to meet a specific processing requirement. PP sheets were drawn through a self‐design solid two‐stage die‐drawing apparatus to various drawing ratios (DRs) at different speeds and with different die‐exit thicknesses. The results showed that tensile strength, modulus, and the degree of orientation significantly increased with the nominal DR and could be further improved by increasing the drawing speed. While the crystallinity increased prior and decreased to near a constant value when the drawing speed was over 150 mm/min in the researched scope. Larger the die‐exit thickness was, lower the orientation degree was but higher the crystallinity could be obtained. Compared with crystallinity, orientation degree plays a leading role in the final product properties during a two‐stage solid die‐drawing process. POLYM. ENG. SCI., 59:2347–2355, 2019. © 2019 Society of Plastics Engineers

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Effect of Die Drawing Process on the Mechanical Behaviour of Polypropylene

Cited by 3 publications

References 0 publications

On the Injection Molding Processing Parameters of HDPE-TiO2 Nanocomposites

On the Injection Molding Processing Parameters of HDPE-TiO2 Nanocomposites

On use of trilayer low density polyethylene greenhouse cover as substitute for monolayer cover

The Effect of Processing Parameters on the Crystalline, Orientation, and Mechanical Properties of Two‐Stage Die‐Drawn Polypropylene

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