期刊
COMPOSITES PART B-ENGINEERING
卷 56, 期 -, 页码 350-357出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2013.08.041
关键词
Polymer-matrix composites (PMCs); Mechanical properties; Statistical properties/methods; Extrusion
资金
- Prince of Songkla Graduate Studies Grant
- Government budget Fund [2555A11502062]
- Rubberwood Technology and Management Research Group of Faculty of Engineering, Prince of Songkla University, Thailand [ENG-54-27-11-0137-S]
A mixture design was used in experiments, to determine the optimal mixture for composites of rubberwood flour (RWF) and reinforced recycled polypropylene (rPP). The mixed materials were extruded into panels. Effects were determined of the mixture components rPP, RWF, maleic anhydride-grafted polypropylene (MAPP), and ultraviolet (UV) stabilizer, on the mechanical properties. The overall composition significantly affected flexural, compressive, and tensile properties. The fractions of recycled polypropylene and rubberwood flour increased all the mechanical material properties; however, increasing one fraction must be balanced by decreasing the other, and the rubberwood flour fraction had a higher effect size. The fraction of MAPP was best kept in mid-range of the fractions tested, while the UV stabilizer fraction overall degraded the mechanical properties. Our results suggest that the fraction of UV stabilizer should be as small as possible to minimize its negative influences. The models fitted were used for optimization of a desirability score, substituting for the multiple objectives modeled. The optimal formulation found was 50.3 wt% rPP, 44.5 wt% RWF, 3.9 wt% MAPP, 0.2 wt% UV stabilizer, and 1.0 wt% lubricant; the composite made with this formulation had good mechanical properties that closely matched the model predictions. (C) 2013 Elsevier Ltd. All rights reserved.
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