Thermal properties of Acacia mangium Cross Laminated Timber and its gluelines bonded with two structural adhesives

Norwahyuni  Mohd Yusof; Paridah  Md Tahir; Seng Hua  Lee; Fatimah Athiyah  Sabaruddin; Redzuan  Mohammad Suffian James; Mohammad  Asim Khan; Ching Hao  Lee; Adlin Sabrina   Muhammad Roseley

Thermal properties of Acacia mangium Cross Laminated Timber and its gluelines bonded with two structural adhesives

Autores

Norwahyuni Mohd Yusof

Paridah Md Tahir

Seng Hua Lee

Fatimah Athiyah Sabaruddin

Redzuan Mohammad Suffian James

Mohammad Asim Khan

Ching Hao Lee

Adlin Sabrina Muhammad Roseley

Editor

Universidad del Bío Bío

Descripción

The properties of CLT can be affected by the type of adhesives used. The thermal properties of the adhesive that join the timber together is essential to determine the thermal endurance of the CLT product. In this study, two types of adhesives were used to join the cross laminated timber (CLT) manufactured from Acacia mangium namely phenol resorcinol formaldehyde (PRF) and one component polyurethane (PUR). The thermal properties of the adhesives, A. mangium wood and the glue lines were determined via Thermogravimetric Analysis (TGA) and Dynamic Mechanical Analysis (DMA) tests. The TGA test showed that PRF adhesive had higher degradation temperature at 530 ºC compared to PUR adhesive at 430 ºC. Meanwhile, the PRF adhesive as a glue line in CLT also showed better thermal resistance where a higher amount of residue of 20,94 % was recorded at temperature up to 900 ºC compared to PUR glue line with 18,26 % residue. The integrity of the CLT over temperature was determined via DMA test and the results showed that PRF adhesive as glue line had superior properties, indicating better interfacial bonding with the woods.