Tensile shear strength of natural wood decorative plywood from lesser known Sungkai (Peronema canescens) tree

The Wood and Biofiber International Conference 2017

轻工业生物科学

Farizan, N.A.^1,2 ; Catherine, B.^1 ; Hamami Sahri, M.^1

Forestry Complex, Faculty of Science and Natural Resource, Universiti Malaysia Sabah, Kota Kinabalu, Sabah

88450, Malaysia^1

Civil Engineering Department, Politeknik Kota Kinabalu, Jalan Politeknik, Kota Kinabalu, Sabah

88450, Malaysia^2

关键词: Cold water immersion;    Comparison study;    Control samples;    End-uses;    Malaysia;    Natural wood;    Tensile shear strength;    Urea formaldehyde;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/368/1/012045/pdf
DOI  :  10.1088/1757-899X/368/1/012045

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

Sungkai (Peronema canescens) small logs has been harvested from a private sungkai plantation (Sabahpuri Nursery Sdn Bhd) in Telipok, Sabah. The logs were then rotary peeled to 0.6mm thick and made into 4' x 4', 3 plies Urea Formaldehyde (UF) plywood with Acacia Hybrid wood used as the core veneer (1.2 mm thick) at a local plywood facility; Cymao Plywood Sdn Bhd in Sandakan. Remaining dried veneer were brought back to University Malaysia Sabah for further study. Laboratory scale 3 plies plywood (Sungkai-Acacia, Sungkai-Seraya) were made using the same source of UF resin and veneer, and used for comparison studies. Commercial 3 plies Nyatoh plywood were also used as control samples. The samples were then tested according to Japanese Agricultural Standard for Plywood 2003 (amended: 2008) Tensile Shear Strength of Type II Natural Wood Decorative Plywood. All of the samples pass the Tensile Shear Strength (TSS) minimum standard of 0.7 N/mm2in untreated condition or even after hot and cold water immersion treatment. The untreated mill samples of Sungkai-Acacia plywood perform the best with mean TSS = 1.74 N/mm2, SE = 0.05 while Nyatoh shows the lowest mean tensile shear strength with 1.06 N/mm2, SE = 0.07. Further statistical analysis shows there was no significance difference between Sungkai mixed plywood group samples. However, Sungkai mixed plywood samples shows a significant difference (p