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Mechanical properties of low nano-silica filled high density polyethylene composites

Authors :
Hai Bo Zhang
Ming Qiu Zhang
Klaus Friedrich
Min Zhi Rong
Source :
Polymer Engineering & Science. 43:490-500
Publication Year :
2003
Publisher :
Wiley, 2003.

Abstract

Modification of nanoparticles through graft polymerization is able to change the chemical nature of the particles' surfaces and provides an effective means for the preparation of nano-fillers specified for composites manufacturing. The present work focuses on the mechanical role of grafted nano-SiO 2 particles in high density polyethylene composites prepared by melt compounding. The experimental results show that at a content of 0.75 vol%, the modified nano-silica results in a rise in tensile stiffness, tensile strength and impact strength of the composites. The grafted nanoparticles can improve the mechanical performance of the matrix polymer more effectively than the untreated version. In addition, a further enhancement of the composites stiffness and strength can be achieved by crosslinking the concentrated masterbatches, which has not yet been revealed in the authors' previous works on grafted nano-SiO 2 particles/polypropylene composites. It is thus revealed that the introduction of the grafting polymers onto the nanoparticles increases the tailorability of the composites.

Details

ISSN :
15482634 and 00323888
Volume :
43
Database :
OpenAIRE
Journal :
Polymer Engineering & Science
Accession number :
edsair.doi...........d44f743a0a7a834fcb1ca2359345457a
Full Text :
https://doi.org/10.1002/pen.10040