Abstract
This study aims to examine the physical and mechanical properties of particle board from veneer waste based on the press time and concentration of urea formaldehyde, as well as to determine the best pressing time and adhesive concentration, so as to produce physical and mechanical properties that meet JIS A 5908: 2003 standards. The method used in this research were a factorial experiment in random design complete (RAL) with two factors are factor A (pressing time) consists of 7 minutes and 9 minutes, and factor B (urea formaldehyde concentration) consists of concentrations of 12%, 14% and 16%. The particle board size is 30 cm x 30 cm x 1 cm with a target density of 0,8g/cm3 and pressed at 165°C with a pressure of 30 kg/cm2. The results showed that density values 0,7640 gr/cm³, water content 8,4509%, water absorption 40,4108%, thickness development 9,9308%, MOE 19.290,5877 kg/cm², MOR 370,5011 kg/cm², IB 2,9925 kg/cm², the screw holding strength 146,7145 kg. In general, all test values meet the JIS A 5908: 2003 standards except thickness swelling and MOE. The best particle board is a particle board made of with a pressing time of 9 minutes with a concentration of urea formaldehyde of 16%.Keywords: pressing time, urea formaldehyde concentration, particle board, veneer waste
Highlights
PENDAHULUAN Kebutuhan kayu sebagai bahan baku bangunan dan furniture semakin meningkat dari tahun ke tahun seiring bertambahnya jumlah penduduk, sehingga ketersediaan kayu dihutan semakin menurun
This study aims to examine the physical and mechanical properties of particle board from veneer waste based on the press time and concentration of urea formaldehyde, as well as to determine the best pressing time and adhesive concentration, so as to produce physical and mechanical properties that meet JIS A 5908: 2003 standards
The results showed that density values 0,7640 gr/cm[3], water content 8,4509%, water absorption 40,4108%, thickness development 9,9308%, Modulus elastatisitas (MOE) 19.290,5877 kg/cm[2], MOR 370,5011 kg/cm[2], IB 2,9925 kg/cm[2], the screw holding strength 146,7145 kg
Summary
Kerapatan merupakan salah satu sifat fisik yang menunjukkan perbandingan antara massa benda terhadap volume yang dimilikinya atau dengan kata lain kerapatan adalah banyaknya massa zat per satuan. Nilai rerata kerapatan papan partikel disajikan pada Gambar 1. Hasil penelitian menunjukkan papan partikel dengan konsentrasi urea formaldehida 16%. Hal ini sejalan dengan penyataan Sudiryanto (2015) yang menyatakan bahwa kerapatan papan partikel meningkat seiring bertambahnya waktu kempa. Hasil analisis keragaman menunjukkan waktu kempa dan konsentrasi urea formaldehida serta interaksi kedua faktor tidak berpengaruh nyata terhadap kerapatan papan partikel. Hal ini diduga karena proses pada saat pencampuran (blending) antara perekat dengan bahan tidak tersebar merata pada seluruh partikel. Pencampuran yang dilakukan secara manual dapat menyebabkan sebaran perekat pada serbuk tidak merata pada seluruh bagian papan dan terkonsentrasi pada beberapa titik, hal ini dapat menyebabkan nilai kerapatan yang bervariasi pada konsentrasi perekat yang sama. Nilai rerata kadar air papan partikel disajikan pada Gambar 2
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
