Results 201 to 210 of about 10,300 (250)

Recrystallization of HDPE in HDPE/iPP quenched films

Acta Polymerica, 1996
AbstractEpitaxial crystallization behavior of HDPE/iPP double layers under quenching and annealing conditions has been studied by means of transmission electron microscopy (TEM). The results obtained from bright field TEM observations indicate that in the as‐quenched state the HDPE that is in direct contact with the surface of the oriented iPP ...
S. Yan, J. Petermann, D. Yang
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Simulation of the extrusion of HDPE and HDPE/UHMWPE blends

European Polymer Journal, 1993
Abstract A Criminale-Ericksen-Filbey (CEF) constitutive equation was used to simulate the behaviour of HDPE samples of different molecular weights and blends with UHMWPE. Shear rate dependent viscosity and first normal stress coefficient data were obtained by capillary rheometry. The extruder operation point was calculated by using the central finite
Rosario E.S. Bretas, Carlos Granado
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Impact of ultraviolet radiation on HDPE and HDPE/STC blends

Polymers for Advanced Technologies, 2008
AbstractThe structure and properties of high‐density polyethylene (HDPE) ultraviolet irradiated in ozone atmosphere were studied by FTIR, XPS, GPC, XRD, DSC, TG, gel, and contact angle test. The oxygen‐containing groups such as CO, CO, and C(O)O were quickly introduced onto HDPE chains through ultraviolet irradiation in ozone atmosphere; their ...
Min Qiao, Qianping Ran, Shishan Wu, Jian Shen   +3 more
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iPP/HDPE blends: Interactions at lower HDPE contents

Journal of Applied Polymer Science, 1995
AbstractMechanical and rheological properties of blends of polypropylene (PP) and linear polyethylene (PE) were studied, with particular attention to the effects of aging of such mixtures. These two olefin polymers are basically incompatible. In PP‐rich blends, addition of highdensity PE (HDPE) causes only a slight decrease in tensile properties and ...
H. P. Blom, J. W. Teh, A. Rudin
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Thermoforming of HDPE

AIP Conference Proceedings, 2017
The thermoforming process involves a previously extruded sheet of material being reheated to a softened state below the melting temperature and then forced into a mould either by a plug, air pressure or a combination of both. Thermoplastics such as polystyrene (PS) and polypropylene (PP) are commonly processed via thermoforming for products in the ...
McKelvey, David, Menary, Gary, Martin, Peter, Yan, Shiyong   +3 more
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Enhanced strain hardening in elongational viscosity for HDPE/crosslinked HDPE blend. I. Characteristics of crosslinked HDPE

Journal of Applied Polymer Science, 2002
AbstractBlending a crosslinked high‐density polyethylene (xHDPE) enhances melt strength and strain hardening behavior in elongational viscosity of high‐density polyethylene (HDPE) to a great degree. Gel fraction of xHDPE has a stronger effect on the strain hardening than sol fraction, although sol fraction also enhances the strain hardening to some ...
Masayuki Yamaguchi, Ken‐Ichi Suzuki, Shingo Maeda   +2 more
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FRACTIONATED CRYSTALLIZATION OF HDPE IN PS/POE/HDPE/SBS BLENDS

Chinese Journal of Polymer Science, 2008
The fractionated crystallization behavior of the minor dispersed HDPE phase in PS/POE/HDPE/SBS quaternary blends was investigated by differential scanning calorimetry (DSC). Interestingly, we found that the fractionated crystallization behavior of HDPE was molecular weight dependent.
Ming-ming Ding, Xiao-ting Fu, Jing Cao, Qin Zhang, Chang-yue Yang, Qiang Fu   +5 more
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Tribological Investigation of HDPE-cuttlebone and HDPE-red Coral Composites

Journal of Bionic Engineering, 2019
In this paper, the tribological properties of cuttlebone (CB)-reinforced high density polyethylene (HDPE) and Red Coral (RC)-reinforced HDPE composites were investigated. The composite specimens were prepared with a hot compression molding machine using different weight proportions of fillers blended with HDPE.
Amira Salem, Walid Bensalah, Salah Mezlini   +2 more
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Tribological investigation of oriented HDPE

Journal of Biomedical Materials Research, 2002
AbstractThe possibility to control the wear properties of high‐density polyethylene (HDPE) material at an early processing stage is explored. Wear measurements of cold roll‐drawn HDPE with two different draw ratios were carried out for three sliding planes, each in two directions.
Mohammed, Hoseini, Jukka, Lausmaa, Antal, Boldizar   +2 more
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Effect of Recycled HDPE with Pro-oxidant on the Photodegradation of HDPE Film

Progress in Rubber, Plastics and Recycling Technology, 2013
Stability and photodegradation studies of HDPE film blended with recycled HDPE, with and without pro-oxidant, were carried out by subjecting the film to accelerated UV exposure up to 144 hours. Two types of recycled HDPE were used; one containing pro-oxidant (recycled degradable HDPE – RDH) and the other without pro-oxidant (recycled standard HDPE ...
M.S.F Samsudin, M.A.A. Wahab, Z. Ahamid
openaire   +1 more source