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Largely improved toughness of polypropylene/long glass fiber composites by β-modification and annealing.
- Source :
-
Composites Science & Technology . May2014, Vol. 96, p56-62. 7p. - Publication Year :
- 2014
-
Abstract
- Abstract: β-Modification and annealing were adopted to improve the impact strength of long glass fiber reinforced (LFPP) composites. It was found that either β-modification or annealing is an efficient way to toughen LFPP composites, and largely enhanced impact toughness can be achieved via simultaneously using β-modification and annealing, particularly for the toughness at low temperatures (−40°C to −20°C). Meanwhile, the tensile strength and Young’s modulus of the composites could be maintained. Various characterizations were used to understand the microstructure changes and toughening mechanism after β-modification and annealing. The results show that the higher extent of the matrix plastic deformation could be the main reason for the enhanced toughness as induced by β-modification and annealing. The possible structural origins for the higher extent of matrix plastic deformation are also discussed. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 02663538
- Volume :
- 96
- Database :
- Academic Search Index
- Journal :
- Composites Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 95827842
- Full Text :
- https://doi.org/10.1016/j.compscitech.2014.03.010