The Effect Of Weight Fraction And Size On The Properties Of Sago Particles Urea Formaldehyde Particleboard

Abstract

We live in a world where wood products are hard to ignore. The sheer flexibility in the number of applications where the wood is used means that it is one of the most sought resources in the world. The wood products industry faces challenges in promoting sustainable management of forest resources. Composite materials have advantage of having an optimized performance, minimized weight and volume, cost effectiveness, chemical resistance and resistance to biodegradation. The research in this paper is focused on sago particles with adhesive of low emission urea formaldehyde (UF) resin 51.6% solid content. The fabrication and testing method are based on JIS A 5908 standard. A single-layer particleboard by using the sago particles has been established at targeted density level 600kg/m3. Particles with weight fractions of 90%, 85%, 80%, 75% and 70% were used in the fabrication of sago composite boards. The results of the test demonstrated that the samples with different weight fraction and size have great influence on the mechanical properties like: MOR, screw test and internal bonding. The findings had demonstrated that the level of weight fraction and size had affects the performance of a board. At the next stage of the research the comparison between sago and wood particleboard will be carried out to identify the feasibility of these materials in the industrial application.

Performance Evaluation of Novel Eco-Materials Composed of Millet Husks, Rice Husks, and Polystyrene

“…The composites studied here have MOR values ranging from 2.54 to 4.47 MPa and MOE values from 686 to 1400 MPa. These values are lower than those reported in the literature for composites based on wood chips, bagasse, chili stems, and others[13]-[18],where MOR values can reach up to 35.84 MPa and MOE up to 3343.2 MPa.…”

The effects of chemical components and particle size on the mechanical properties of binderless boards made from oak (Quercus spp.) logs degraded by shiitake fungi (Lentinula edodes)

“…The results of the particle size distribution analysis suggests that the physical characteristics of WP has a greater influence on MOR and IB than the chemical composition of the raw materials. A greater proportion of small particles may enhance particle packing [9] and decrease total surface void area [13], thereby enhancing stress transfer among the fibres and increasing MOR. Particle packing may also decrease the amount of voids in the matrix and increase the number of internal bonding sites, thereby improving IB [9].…”

“…In addition to ligninolytic enzymes, shiitake fungi also contain cellulose and hemicellulose degrading enzymes that reduce polysaccharides to low molecular weight monomer and oligomer sugars for uptake [12]. There are many shiitake fungi induced chemical and physical changes in spent logs, two of which may potentially be favorable for binderless boards: (1) increase in hot water extractives, which can promote polymerization [8] and cross linkage [10] between various chemical components during the hot press process and (2) structurally weakened cells that may breakdown into smaller particles during the milling process, which can lead to a better particle packing system [9] with less voids and enhance stress transfer [13]. Furthermore, there is a large volume of waste logs produced by the mushroom cultivation industry [14].…”

Urea Formaldehyde Composites Reinforced with Sago Fibres Analysis by FTIR, TGA, and DSC

“…To develop materials with lower environment impact, the solution proposed here is to associate Sago particles and UF matrix. The previous work was conducted to characterize the mechanical properties of particleboard made from Sago with different loading of UF matrix and particles size [9]. An understanding of adhesives and how they react to different particles size and weight fraction will help us understand the behaviour of Sago composite materials and design based on the desired function.…”