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Fabrication of Wood-Rubber Composites Using Rubber Compound as a Bonding Agent
Instead of Adhesives
#MMPMID28773591
Shao D
; Xu M
; Cai L
; Shi SQ
Materials (Basel)
2016[Jun]; 9
(6
): ? PMID28773591
show ga
Differing from the hot-pressing method in the manufacturing of traditional
wood-rubber composites (WRCs), this study was aimed at fabricating WRCs using
rubber processing to improve water resistance and mechanical properties. Three
steps were used to make WRCs, namely, fiber-rubber mixing, tabletting, and the
vulcanization molding process. Ninety-six WRC panels were made with wood fiber
contents of 0%-50% at rotor rotational speeds of 15-45 rpm and filled
coefficients of 0.55-0.75. Four regression equations, i.e., the tensile strength
(Ts), elongation at break (Eb), hardness (Ha) and rebound resilience (Rr) as
functions of fiber contents, rotational speed and filled coefficient, were
derived and a nonlinear programming model were developed to obtain the optimum
composite properties. Although the Ts, Eb and Rr of the panels were reduced, Ha
was considerably increased by 17%-58% because of the wood fiber addition.
Scanning electron microscope images indicated that fibers were well embedded in
rubber matrix. The 24 h water absorption was only 1%-3%, which was much lower
than commercial wood-based composites.
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