The Relationship Between Plastic Virginity and Engineering Properties of Wood Plastic Composites
4 Abstract: This study attempted to investigate the relationship between plastic virginity and physico-mechanical properties of wood plastic composites. To meet this objective, wood flour was mixed with either virgin or recycled polypropylene at 40%, 50% and 60% by weight fiber loading. The samples were made by melt compounding and then injection molding. The amount of coupling agent was fixed at 2% for all formulations. Then physical and mechanical properties of composites were measured according to ASTM standard. Then, all the experimental data were collected and analyzed with the analysis of variance techniques and suitable model was selected with the simple's linear regression model. Results indicated that the flexural strength, flexural modulus, tensile strength and tensile modulus of composites of recycled plastic composites were higher than those of virgin plastics. Also, the water absorption and thickness swelling of samples decreased with the increase of recycled plastic loading. Furthermore, optimization processes have been carried out to determine the suitable combinations of plastic virginity variables in order to attain desirable physical and mechanical properties of wood plastic composites.
Wood-polymer composites
provides a comprehensive survey of major new developments in wood-polymer composites - reviews the key aspects of manufacture, including raw materials and manufacturing technologies - discusses pro ...
Absorption of steam and water at ambient temperature in wood polymer composites prepared from agro-waste and Novolac
Banana (Musa paradisica), Hemp (Hibiscus cannabinus), and Agave (Agave jourcroydes) fibers were treated with Novolac resin for the formation of their composites in the ratio of 50: 50 (wt/wt). These fibers were also treated with maleic anhydride, and it was found that composites based on treated fibers showed higher absorption of steam ( at 100°C) up to 12 h; and beyond 18 h, it is less than the untreated fiber composites. However, at ambient temperature, the absorption of water is lesser for composites based on maleic anhydride-treated fiber than for composites based on untreated fibers. The SHORE-D hardness was commonly higher for composites based on maleic-anhydride-treated fibers.