Preparation and properties of nano-silica filled self-reinforced polypropylene

Hong Ruan Wen, Qiu Zhang Ming, Hui Wang Ming, Zhi Rong Min, Thomas Bárány, Tibor Czigány

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

To improve the properties of polypropylene (PP), a new route that combines nanoparticles filling with self-reinforced technique was applied in this work. That is, nano-silica particles were firstly modified by graft polymerization to increase interfacial interaction between nanoparticles and matrix. Then the grafted nanoparticles were melt-compounded with PP producing composites sheets, and the sheets were stretched under a temperature slight lower than the melt point of PP at a constant velocity. Finally, the stretched sheets were film-stacked with random PP copolymer by a special designed mold and were hot pressd at different processing temperature (T=150-175°C) and holding pressure (2.0-5.0MPa) under constant holding time of 5min. The resultant self-reinforced nanocomposite are much stronger and stiffer than the unfilled polymer as characterized by mechanical test. The results show that the optimum processing conditions for hot consolidation are 160°C and 2.5MPa. Addition of nanoparticles increases crystallinity of PP, and induces the formation of craze and cause much more surrounding matrix polymer to involve in large-scale plastic deformation, which might ensure an overall improvement of mechanical properties.

Original languageEnglish
Title of host publicationMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
PublisherTrans Tech Publications
Pages318-321
Number of pages4
ISBN (Print)0878493786, 9780878493784
Publication statusPublished - Jan 1 2008
EventMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures - Hong Kong, P.R., China
Duration: Jul 28 2008Jul 31 2008

Publication series

NameAdvanced Materials Research
Volume47-50 PART 1
ISSN (Print)1022-6680

Other

OtherMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
CountryChina
CityHong Kong, P.R.
Period7/28/087/31/08

    Fingerprint

Keywords

  • Film-stacking
  • Nano-silica
  • Nanocomposite
  • Polypropylene
  • Self-reinforced

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Wen, H. R., Ming, Q. Z., Ming, H. W., Min, Z. R., Bárány, T., & Czigány, T. (2008). Preparation and properties of nano-silica filled self-reinforced polypropylene. In Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures (pp. 318-321). (Advanced Materials Research; Vol. 47-50 PART 1). Trans Tech Publications.