Sifat Fisis Mekanis Papan Laminasi Bambu Belangke (Gigantochloa Pruriens) Termodifikasi Polystyrene

Abstract

Laminate board is an engineered product that has lignocellulosic material from wood or non-wood. Belangke bamboo as raw material for laminated boards can be used as a substitute for wood, which is currently a trend for derivative products. The addition of long soaking polystyrene treatment is one of the modifications to laminated boards in increasing the quality of their strength and durability against attacks by destructive organisms. This study aims to analyze the physical and mechanical properties of laminated boards from belangke bamboo with the effect of soaking time of 0 hours, 6 hours, 12 hours, and 24 hours. The laminated board consists of 3 layers measuring 30 cm long x 15 cm wide x 1.5 cm thick using 280 g/m2 of isocyanate adhesive which is cold pressed for 24 hours and conditioned for 10 days. The results of the research on physical properties showed that the average value of the weight percent gain (WPG) ranged from 7.67-8.33%, the density ranged from 0.79-1.07 g/cm3 , the moisture content ranged from 11.77-12.67% . The results of the mechanical properties test showed that the average value of the modulus of elasticity (MOE) test ranged from 127377.74- 140668.34 kgf/cm2 , modulus of rupture (MOR) ranged from 578.95 to 634.01 kgf/cm2 , and the shear strength ranged from 19.60-33.72 kgf/cm2 . Based on the results of analysis of variance, the best laminate board was found in the 24 hour immersion treatment.