A Multifunctional Mineral Binder for Plywood Production: The Effect of Manufacturing Parameters on Bonding Quality

Shalbafan, Ali; Nadali, Amin; Thömen, Heiko (2020). A Multifunctional Mineral Binder for Plywood Production: The Effect of Manufacturing Parameters on Bonding Quality Materials, 13(10), p. 2360. 10.3390/ma13102360

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Geopolymers show great potential for use as binders in developing and manufacturingmultifunctional wood products. The objective of this study was to improve the bonding qualityof a geopolymer binder, with wood veneers, using different manufacturing parameters. To thisend, we produced five layered plywood panels treated with various lay-up times (1, 5, 10, 15 min),panel compressibility values during hot pressing (5%, 10%, 15%, and 30% compression), veneerroughness values (low, medium, and high roughness), press temperatures (120, 140, and 160◦C),and veneer layouts via changing the middle layer position of plywood relative to the surface layers.The results show that the shear strength and thickness swelling were negatively influenced byincreasing the lay-up time of resinated veneers and panel compressibility. Increasing the veneerroughness significantly increased the panels’ properties. Furthermore, the panels produced witha pressing temperature of 140◦C showed the best performances. The veneer layouts also significantlychanged the physical and mechanical properties of the plywood panels. Generally speaking, the resultsobtained in this study show that improving the bonding quality of geopolymer binders with woodcan be done through the manipulation of plywood manufacturing parameters.

Item Type:	Journal Article (Original Article)
Division/Institute:	School of Architecture, Wood and Civil Engineering School of Architecture, Wood and Civil Engineering > Institute for Materials and Wood Technology School of Architecture, Wood and Civil Engineering > AHB Teaching School of Architecture, Wood and Civil Engineering > Institut for Building Materials and Biobased Products IBBM
Name:	Shalbafan, Ali; Nadali, Amin and Thömen, Heiko
Subjects:	Q Science > QC Physics Q Science > QD Chemistry T Technology > TH Building construction T Technology > TP Chemical technology
ISSN:	1996-1944
Language:	English
Submitter:	Armin Rist
Date Deposited:	29 Jun 2020 12:34
Last Modified:	01 Oct 2021 02:18
Publisher DOI:	10.3390/ma13102360
Uncontrolled Keywords:	mineral binder geopolymer plywood formaldehyde emission lay-up time veneerroughness veneer layouts compression ratio press temperature
ARBOR DOI:	10.24451/arbor.11898
URI:	https://arbor.bfh.ch/id/eprint/11898