Premium
Mechanical properties of extrusion‐foamed rigid PVC/wood‐flour composites
Author(s) -
Mengeloglu Fatih,
Matuana Laurent M.
Publication year - 2003
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.10058
Subject(s) - materials science , extrusion , wood flour , composite material , ultimate tensile strength , izod impact strength test , foaming agent , exothermic reaction , ductility (earth science) , blowing agent , polyurethane , chemistry , creep , organic chemistry , porosity
This study was conducted to characterize the mechanical properties of extrusion‐foamed neat rigid PVC and rigid PVC/wood‐flour composites by using endothermic and exothermic chemical foaming agents (CFAs). The specific elongation at break (ductility) of the samples was improved by foaming, while the opposite trend was observed for the tensile strength and modulus of the samples, regardless of the chemical foaming agent type. In addition, experimental results indicated that foaming reduced the Izod impact resistance of both neat rigid PVC and rigid PVC/wood‐flour composites but that this reduction was not statistically significant for the composites. A comparison between batch microcellular processing and extrusion foam processing was made, which demonstrated that foams with very fine cells (microcellular processed) exhibit better impact strength than foams with larger cells (extrusion processed with CFAs).