期刊
COMPOSITES PART B-ENGINEERING
卷 43, 期 7, 页码 2795-2800出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2012.04.041
关键词
Polymer-matrix composites (PMCs); Thermoplastic resin; Mechanical properties; Fracture toughness
资金
- National Research Council of Argentina (CONICET)
Polypropylene/wood flour composites with different fibre content were prepared. The effect of composition and the incorporation of maleinated polypropylene on the materials tensile and fracture and failure behaviour was investigated. Reliable fracture toughness data that will be useful for structural applications were obtained. In unmodified composites an increase in Young's modulus was found with the addition of wood flour to PP, whereas tensile strength, strain at break and fracture toughness were observed to decrease as fibre content increased. The presence of MAPP was beneficial to tensile strength and ductility and had no significant effect on fracture toughness, as a result of enhanced fibre dispersion within the matrix and improved interfacial adhesion. Although reduced ductility and toughness were observed for the composites respect to the matrix, in the case of modified composites, environmentally friendly stiffer materials were obtained with cost saving without sacrificing strength. (C) 2012 Elsevier Ltd. All rights reserved.
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