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Morphological and mechanical properties of foamed thick-walled Wood-Plastic-Composite structures

Content Provider	SAGE Publishing
Author	Moritzer, Elmar Flachmann, Felix
Copyright Year	2023
Abstract	Microcellular wood fiber reinforced polymers offer the possibility to reduce the use of fossil raw materials. In particular, thick-walled structures with thicknesses greater than 6 mm offer a high potential for weight savings. This study investigates the cell structures and mechanical properties of injection-molded test specimens. The influence of different thicknesses (6–10 mm) along with different chemical blowing agents (endothermic, exothermic) with varying dosages (0–2 wt%) is analyzed. The investigations reveal that exothermic chemical blowing agents form finer cells consistently to thin-walled structures than endothermic ones. Higher foaming agent content leads to higher pore fractions, with many small cells coalescing into a large open-pore cell network. The mechanical properties depend mainly on the pore content of the sample. The specific tensile properties deteriorate with the use of chemical blowing agents (CFA), whereas the sandwich structure produced with compact edge layers has a positive influence on the specific flexural properties.
Related Links	https://journals.sagepub.com/doi/pdf/10.1177/0021955X231161175?download=true
Starting Page	187
Ending Page	199
Page Count	13
ISSN	0021955X
Issue Number	3
Volume Number	59
Journal	Journal of Cellular Plastics (CEL)
e-ISSN	15307999
DOI	10.1177/0021955X231161175
Language	English
Publisher	Sage Publications UK
Publisher Date	2023-02-23
Publisher Place	London
Access Restriction	Open
Rights Holder	© The Author(s) 2023
Subject Keyword	mechanicle properties Chemical foaming/blowing agent cell morpholgy wood-plastic-composite (WPC) injection foam molding
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Polymers and Plastics

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