Structure and Properties of Vibrating Extruded High-Density Polyethylene Sheet

Xuemei, Qin; Qu, Jinping; Cao, Xianwu

doi:10.1007/s00289-006-0523-5

Cited by 6 publications

(3 citation statements)

References 12 publications

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“…The material used in this work is HDPE (grade 5502B) with MFR=0.3987g/10min, supplied by Shanghai Kinfei Petrochemical Corp. China. Equipment (EMDP) [9][10] : The single screw extruder cell of the electromagnetic dynamic rheologic general measuring instrument is used to prepare the HDPE sheets.…”

Section: Materialmentioning

confidence: 99%

“…It had been verified that the EMPD had multiple advantages over traditional extruder, such as low energy consumption, high output, low melt die swell ratio, and superior mechanical and surface quality of the extruded products [6][7][8]. There are also investigations have been done on its effect on the relationship between microstructures and properties by Qin et al [9][10]. But few study has been done on the polymer reinforce of vibrating extruded in a low temperature.…”

Section: Introductionmentioning

confidence: 99%

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Study on Self-Reinforcement of High-Density Polyethylene Extruded with Vibration in Low Temperature

Qin

Shi

2011

AMR

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The effect of vibration on the microstructure and mechanical properties of high-density polyethylene (HDPE) sheets, obtained through vibration plasticating extruder in low temperature, were studied systematically. Property Tests show that the tensile strength and the Vika temperature were much improved under the reciprocating axial vibration in low temperature. Differential scanning calorimetry , scanning electron microcopy and wide angle X-ray diffraction were executed to analyze the microstructure of the samples. The results indicate that the vibration extrudate in low temperature has higher crystallinity, perfect crystallite, and new crystal morphology formed , which account for enhancement of the mechanical properties and Vika temperature of sheets, compared to conventional static extrudate.

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Section: Materialmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on Self-Reinforcement of High-Density Polyethylene Extruded with Vibration in Low Temperature

Qin

Shi

2011

AMR

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“…Thus, solid conveying, melting and metering stages are all under the impact of a vibration force field resulting in positive effects on the material transportation and plasticizing, as well as in a uniform dispersion of filler particles in the extrudates. 8,9 In recent years, a novel ultrasound-assisted extrusion of a dispersion of nanofillers in polymer melts has been developed. 10,11 In contrast to the electromagnetic dynamic plasticizing extrusion, sections for ultrasonic treatment are attached directly to the entrance of the die.…”

Section: Introductionmentioning

confidence: 99%

Vibration-assisted melt compounding of polypropylene/carbon black composites: Processability, filler dispersion and mechanical properties

Kotzev

Djoumaliisky

Natova

et al. 2012

Journal of Reinforced Plastics and Composites

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Composites of polypropylene and carbon black were melt compounded by a vibration-assisted process. For comparison, conventional extrusion was also used for preparation of the same composites. A throughput of the vibration-assisted process was established to be higher than that of conventional extrusion. Microscopic images of the extrudates demonstrated better dispersion of the fillers when the vibration force field was applied. The mechanical properties and viscoelastic behavior of the composites were studied and the results were discussed in the context of the reinforcing action of the fillers and the higher level of polypropylene chain scission accompanying the vibration-assisted process.

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Improved mechanical properties and structure of polypropylene pipe prepared under vibration force field

Chen

Nan-qiao

Liu

et al. 2009

J of Applied Polymer Sci

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The polypropylene (PP) pipes were prepared using a self-made electromagnetic dynamic plasticating extruder, which introduced a vibration force field into the whole plasticating and extrusion process by the axial vibration of the screw. The effects of the vibration frequency and the vibration amplitude on the mechanical properties and microstructure of PP pipes were investigated using bursting pressure testing, tensile testing, impact testing, differential scanning calorimetry (DSC), and wide-angle X-ray diffraction (WAXD). The mechanical properties testing showed that the circumferential strength of PP pipes increased significantly, and the biaxial selfreinforcement pipes could be obtained. Also, the impact strength was improved. When compared with the conventional static extruded specimens, the maximum increase of bursting pressure, tensile yield strength, and impact strength were 27.03%, 7.3%, and 16.2%, respectively. DSC and WAXD analysis showed that the PP pipes obtained by vibration plasticating extrusion (VPE) had higher crystallinity, higher melting temperature, more perfect crystals, and smaller crystal sizes, but no new polymeric crystalline peak appeared. The improvement of mechanical properties of the PP pipes prepared by VPE was attributed to the higher crystallinity and the improvement of the molecular orientation and of the crystalline morphology under the action of the vibration force field.

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Structure and Properties of Vibrating Extruded High-Density Polyethylene Sheet

Cited by 6 publications

References 12 publications

Study on Self-Reinforcement of High-Density Polyethylene Extruded with Vibration in Low Temperature

Study on Self-Reinforcement of High-Density Polyethylene Extruded with Vibration in Low Temperature

Vibration-assisted melt compounding of polypropylene/carbon black composites: Processability, filler dispersion and mechanical properties

Improved mechanical properties and structure of polypropylene pipe prepared under vibration force field

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