Brittle-ductile transition in high-density polyethylene/glass-bead blends: Effects of interparticle distance and temperature

2001 ◽  
Vol 39 (16) ◽  
pp. 1855-1859 ◽  
Author(s):  
Qiang Yuan ◽  
Wei Jiang ◽  
Huixuan Zhang ◽  
Jinghua Yin ◽  
Lijia An ◽  
...  
Keyword(s):  
High Density Polyethylene ◽  
Glass Bead ◽  
Interparticle Distance ◽  
High Density ◽  
Brittle Ductile Transition

Microdamage and interfacial adhesion in glass bead-filled high-density polyethylene

1992 ◽  
Vol 27 (17) ◽  
pp. 4633-4638 ◽  
Author(s):  
Lu Sinien ◽  
Yan Lin ◽  
Zhu Xiaoguang ◽  
Qi Zongneng
Keyword(s):  
High Density Polyethylene ◽  
Interfacial Adhesion ◽  
Glass Bead ◽  
High Density

Dielectric monitoring of water absorption in glass-bead-filled high-density polyethylene

Polymer ◽  
1991 ◽  
Vol 32 (3) ◽  
pp. 523-530 ◽  
Author(s):  
P.A.M. Steeman ◽  
F.H.J. Maurer ◽  
M.A. van Es
Keyword(s):  
Water Absorption ◽  
High Density Polyethylene ◽  
Glass Bead ◽  
High Density

The role of creep damage in glass bead filled high density polyethylene

1995 ◽  
Vol 14 (20) ◽  
pp. 1458-1460 ◽  
Author(s):  
Lu Sinien ◽  
Zhu Xiaoguang ◽  
Qi Zhongneng ◽  
Xu Haun
Keyword(s):  
High Density Polyethylene ◽  
Glass Bead ◽  
Creep Damage ◽  
High Density

Electrical Behavior of High Density Polyethylene/ZnO Nano-composites

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Sie Chin Tjong ◽  
Guodong Liang
Keyword(s):  
High Density Polyethylene ◽  
Filler Particle ◽  
Interparticle Distance ◽  
Annealing Treatment ◽  
High Density ◽  
Insulating Layer ◽  
Melt Compounding ◽  
Reinforcing Fillers ◽  
Wide Range ◽  
Zno Powders

Abstract High density polyethylene (HDPE)/ZnO composites containing a wide range of ZnO content (1-60 vol%) were prepared by melt compounding. ZnO powders with sizes of ~ 200 nm and ~ 2 μm were employed as reinforcing fillers. The effects of the size and filler particle content as well as annealing treatment on the dielectric and conducting properties of the HDPE/ZnO composites were examined. The results showed that the dielectric constant of HDPE/ZnO composites increased gradually with an increase of the ZnO content. The resistivity of HDPE/ZnO composites can be described satisfactorily by the interparticle distance of filled particles. This behavior is interpreted in terms of tunneling of the electrons through the insulating layer of polymer separating two neighboring ZnO fillers. The correlation between the structure and electrical property of the composites is discussed.

Composition and Surface Topography Effects on Apatite-Forming Ability of Ceramic-Polymer Composites

2003 ◽  
Vol 774 ◽  
Author(s):  
Susan M. Rea ◽  
Serena M. Best ◽  
William Bonfield
Keyword(s):  
Surface Topography ◽  
High Density Polyethylene ◽  
High Density ◽  
Apatite Layer ◽  
Biologically Active ◽  
Human Blood Plasma ◽  
Apatite Formation ◽  
Polyethylene Matrix ◽  
Composite Surface ◽  
X Ray

AbstractHAPEXTM (40 vol% hydroxyapatite in a high-density polyethylene matrix) and AWPEX (40 vol% apatite-wollastonite glass ceramic in a high density polyethylene matrix) are composites designed to provide bioactivity and to match the mechanical properties of human cortical bone. HAPEXTM has had clinical success in middle ear and orbital implants, and there is great potential for further orthopaedic applications of these materials. However, more detailed in vitro investigations must be performed to better understand the biological interactions of the composites and so the bioactivity of each material was assessed in this study. Specifically, the effects of controlled surface topography and ceramic filler composition on apatite layer formation in acellular simulated body fluid (SBF) with ion concentration similar to those of human blood plasma were examined. Samples were prepared as 1 cm × 1 cm × 1 mm tiles with polished, roughened, or parallel-grooved surface finishes, and were incubated in 20 ml of SBF at 36.5 °C for 1, 3, 7, or 14 days. The formation of a biologically active apatite layer on the composite surface after immersion was demonstrated by thin-film x-ray diffraction (TF-XRD), environmental scanning electron microscopy (ESEM) imaging and energy dispersive x-ray (EDX) analysis. Variations in sample weight and solution pH over the period of incubation were also recorded. Significant differences were found between the two materials tested, with greater bioactivity in AWPEX than HAPEXTM overall. Results also indicate that within each material the surface topography is highly important, with rougher samples correlated to earlier apatite formation.

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