Pengaruh Perlakuan Pendahuluan pada Strand terhadap Sifat Fisis dan Mekanis Oriented Strand Board Kayu Sengon (Paraserianthes falcataria (L.) Nielsen)
Abstract
Penelitian ini bertujuan mengevaluasi karakteristik OSB kayu sengon dengan
perlakuan pendahuluan steam dan steam bilas NaOH 1%. Strand kayu sengon
diberi perlakuan steam pada suhu 126 ℃ dengan tekanan 0,14 MPa selama 1 jam
dan dilanjutkan dengan pembilasan NaOH 1%. Strand dicampur dengan perekat
Phenol Formaldehyde (PF) pada konsentrasi 10%. Papan berukuran (30x30x0,9)
cm3 disusun 3 lapis dengan kerapatan target 0,55 g.cm-3 dan nisbah lapisan 25:50:25.
Pengujian sifat fisis dan mekanis mengacu pada standar JIS A 5908 (2003) yang
hasilnya dibandingkan dengan standar CSA 0437.0 (Grade O-1). Hasil penelitian
menunjukkan bahwa perlakuan pendahuluan strand memberikan pengaruh
terhadap stabilitas dimensi OSB. Perlakuan steam bilas NaOH 1% menghasilkan
OSB dengan sifat fisis yang lebih baik dari perlakuan steam tanpa perlakuan
lanjutan. Namun, perlakuan steam dan steam bilas NaOH 1% tidak berpengaruh
terhadap sifat mekanis OSB. Secara keseluruhan, karakeristik OSB pada setiap
perlakuan pendahuluan mampu memenuhi standar CSA 0437.0 (Grade O-1),
terkecuali pada beberapa parameter sifat mekanis. The objectives of this research were to evaluated the characteristics of OSB
from sengon wood with steam treatment and steam-treated followed by washing
1% NaOH. The sengon wood strand was treated with steam at a temperature of
126 ℃ with a pressure of 0,14 MPa for 1 hour and followed by washing with 1%
NaOH. Strands were mixed with phenol formaldehyde (PF) adhesive at a
concentration of 10%. Three layered of OSB was made with the size of (30x30x0,9)
cm3, target density of 0,55 g.cm-3, and shelling ratio of 25:50:25. Testing of physical
and mechanical properties of OSB refers to the JIS A 5908 (2003) standard and the
results are compared with the CSA 0437.0 (Grade O-1) standard. The results show
that the pretreatment of strand has an effect on the dimensional stability of OSB.
The steam-treated follow by washing with 1% NaOH produce OSB with better
physical properties than the steam without further treatment. However, the steam
and steam-treated follow by washing with 1% NaOH has no effect on
the mechanical properties of the OSB. Overall, the characteristics of OSB in
each pretreatment met the CSA 0437.0 (Grade O-1) standard, prefix on some
parameters of mechanical properties.
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