PENGARUH UMUR POHON DAN JUMLAH PEREKAT LABUR TERHADAP SIFAT - SIFAT PAPAN LAMINASI KAYU SUREN

PUNGKY WIDIARYANTO, Prof. Dr. Ir. T. A. Prayitno, M. For.

2006 | Skripsi | S1 KEHUTANAN

Ketidakseimbangan antara pasokan kayu dan kebutuhan kayu memuncu1kan alternatif dalam pengolahan kayu diantaranya dengan teknologi papan laminasi. Kua1itas papan laminasi dipengaruhi oleh berbagai faktor. Penelitian ini ditujukan untuk mengetahui pengaruh umur pohon danjum1ah perekat 1abur terhadap (kualitas) sifat-sifat papan laminasi kayu suren. Pene1itian ini menggunakan rancangan acak lengkap dengan percobaan secara faktorial. Faktor yang digunakan adalah umur pohon (6,7 dan 8 tahun) dan jum1ah perekat labur (20 #IMSGL, 40 #/MSGL dan 60 #/MSGL) sehingga diperoleh 9 kombinasi perlakuan dengan 3 kali ulangan. Parameter yang diamati meliputi kadar air, berat jenis, keteguhan 1engkung statik, keteguhan tekan sejajar serat dan keteguhan geser rekat. Berdasarkan hasH analisis, interaksi antara kedua faktor tidak berpengaruh terhadap sifat-sifat papan 1aminasi kayu suren. Faktor umur pohon juga tidak berpengaruh terhadap sifat-sifat papan laminasi kayu suren. Faktor jumlah perekat labur mempengaruhi kadar air, berat jenis, MoR, keteguhan rekat geser dan tekan sejajar serat dengan hubungan makin banyakjumlah perekat 1abur maka makin tinggi juga sifat-sifat papan laminasi tersebut. Hasil penelitian menunjukkan bahwa nilai rata-rata kadar air 15,01 %, berat jenis 0,54, MoE 5622,27 kg/cm2 , MoR 490,77 kg/em2 , keteguhan rekat geser 76,12 kg/em2 dan keteguhan tekan sejajar serat 3555,45 kg/em.

The imbalance between wood supply and wood demand has appeared the alternative ofwood uses such as technology oflaminated board The quality of a laminated board is influenced by many factors. This research is aimed to investigate the irifluence oftree age and amount ofglue spread toward the properties (qualities) oflaminated boards. This research used completely randomized design with factorial experiment. The factors used in this research were tree age (6, 7 and 8 years old) and amount of glue spread (20 #/MSGL, 40 #/MSGL and 60 #/MSGL) so that it had 9 treatment's combinations with 3 repetitions. Parameters of the research included moisture content, specific gravity, static bending elasticity, compression parallel to grain and shear strength bending. According to analysis, interaction between the two factors had no influence on the properties of laminated boards. Tree age also had no effect toward the properties oflaminated boards. Glue spread irifluenced moisturte content, specific gravity, MoR. compression parallel to grain and shear strength bending. The higher amount ofglue spread the higher those properties ofthe laminated board The result showed that average value ofmoisture content was 15,01 %; specific gravity: 0,54; MoE: 5622,27 kg/cm2 ; MoR: 490,77 kg/cm2 ; compression parallel to grain: 355,45 kg/cm2 and shear strength bending was 76,45 kg/cm2 •

Kata Kunci : umur pohon, perekat labur, papan laminasi, kayu suren