Physical and Mechanical Properties of Cross-Laminated Timber Made of a Combination of Mangium-Puspa Wood and Polyurethane Adhesive

Authors

  • Tengku Muhammad Renzy Hariz Department of Forest Products, Faculty of Forestry and Environment, IPB University
  • Yusuf Sudo Hadi Department of Forest Products, Faculty of Forestry and Environment, IPB University
  • Muhammad Adly Rahandi Lubis Research Center for Biomass and Bioproducts, National Research and Innovation Agency (BRIN)
  • Muhammad Iqbal Maulana Research Center for Biomass and Bioproducts, National Research and Innovation Agency (BRIN)
  • Rita Kartika Sari Department of Forest Products, Faculty of Forestry and Environment, IPB University
  • Wahyu Hidayat Department of Forestry, Faculty of Agriculture, University of Lampung

DOI:

https://doi.org/10.23960/jsl.v11i1.645

Abstract

This study aimed to evaluate the physical and mechanical properties of cross-laminated timber (CLT) characteristics from mangium (Acacia mangium) and puspa (Schima wallichii) woods and their combination using polyurethane (PU 1.2) adhesives. The manufacture of CLT began with basic adhesive characterization and thermo-mechanical analysis. Wood material’s physical and chemical properties were also tested with its response to the PU 1.2 wettability. The CLT (100 ´ 30 ´ 3.60) cm3 was manufactured with 160 g/m2 glue spread at a pressure of 0.80 MPa for 200 minutes. The CLT panels were characterized refers to the JAS 3079  standard. The results show that PU 1.2 had a gelatination time of 182.1 minutes at 25°C, was able to form urethane groups, and experienced an increase in storage modulus at 35°C. Mangium and puspa woods have different physical and chemical properties, but they interact similarly with PU 1.2 wettability. Puspa CLT panel has a higher density than mangium but lower dimensional stability. The bending mechanical properties of hybrid puspa-mangium-puspa CLT were able to match puspa CLT and have one sample of shear strength that met the JAS 3079 standard in both grain directions. Therefore, hybrid puspa-mangium-puspa CLT has the potential to be developed to improve its dimensional stability and mechanical properties.

Keywords: Acacia mangium, cross-laminated timber, layer combination, polyurethane adhesive, Schima wallichii

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Published

06-01-2023

How to Cite

Hariz, T. M. R., Hadi, Y. S., Lubis, M. A. R., Maulana, M. I., Sari, R. K., & Hidayat, W. (2023). Physical and Mechanical Properties of Cross-Laminated Timber Made of a Combination of Mangium-Puspa Wood and Polyurethane Adhesive. Jurnal Sylva Lestari, 11(1), 37–65. https://doi.org/10.23960/jsl.v11i1.645

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