Flexural Mechanical Characteristic of Sawdust and Chipwood Filled Epoxy Composites

Abstract

A study was conducted with the objective of gathering the information through flexural (three-point bending) testing. This research presents the testing results concerning the mechanical properties, modulus of elasticity (MOE) and modulus of rupture (MOR) of natural fiber reinforced composite. Resin were used as a matrix and untreated wood fibres contents 14% by weight as a filler treatment parameters to obtain better compatibility involving wood fibres Sawdust (SW) and Chipwood (CW) and epoxy. The feasibility of processing the composite prepared manually from waste wood and epoxy using open molding was investigated. The tests that have been conducted are in according to ASTM (D790-97) for flexural properties test method. Statistical analysis using ANOVA one way and two way showed that the differences of results obtained from those SW and CW fiber composite samples are significant, which confirm a very firm mechanical performance of the composites through flexural tests. This shows the producing a good quality of SW and CW fibre composite which maybe can use for furniture utilities.

Mechanical and microstructural characterization of epoxy/sawdust (Pinus elliottii) composites

“…The lateral profiles of EPS samples in Figure 1(d), (f), and (h) show the formation of air bubbles in different numbers and of different sizes, which is a common occurrence in epoxy composites. 5,17 Careful observation of the inset in Figure 1(d) and (f) reveals the presence of some circular patterns, such as bubbles or cavities, in the interface between the sawdust particles and epoxy resin. These cavities can be attributed to the pullout of the sawdust during the rupture of the sample, revealing that interaction between them and the matrix is not optimized; these phenomena can be understood as weak epoxy wettability of the sawdust surface.…”

“…Composite materials reinforced with natural fiber waste present interesting properties, such as low density, high rigidity, and low cost, and reduce the environmental impacts caused by incorrect disposal of these wastes. 1–4 There have been several studies conducted with various types of natural fibers, such as bamboo, empty fruit bunch from palm oil production, and wood residue, 4–7 to obtain polymeric composites reinforced with natural fibers. These composites usually have less complex manufacturing processes than other composites that perform similar functions.…”

Preparation of bio-composite from wood sawdust and gypsum

“…Therefore, the disposal of sawdust is getting more and more attentions in recent years. The sawdust is usually developed as adsorbents (Britton, 1978;Ajmal et al, 1996;Chatterjee et al, 1996;Ajmal et al, 1998;Ribeiro et al, 2000) and fuel (Martensson and Lindblom, 1996;Yan et al, 1999;Ravi et al, 2004), in addition, it still has a variety of practical applications like in making mineral-bonded composites (Aziz et al, 1979;Paramasivam and Loke, 1980;Kossatz and Lempfer, 1982); filler of polymers (Maldas and Kokta, 1990;Marcovich et al, 1996;Aranguren et al, 1999;Najafi and Najafi, 2009;Hisham et al, 2011;Félix et al, 2013); composting or fertilizer (Yarie and VanCleve, 1996;Bugbee, 1999;Herai et al, 2006); and chemical intermediates (Allgeier et al, 1929;Othmer et al, 1942;Sullivan et al, 1983;Thiebaud and Borredon, 1998;Tymchyshyn and Xu, 2010). Among these disposals, mineral-bonded sawdust composites which combine sawdust with such mineral as Portland cement (Moslemi et al, 1983;Simatupang, 1998), magnesite cement (Dinwoodie and Paxton, 1989) and gypsum (Kossatz and Lempfer, 1982;Simatupang et al, 1994;Hernández-Olivares et al, 1999) have long history, the earliest commercial mineral-bonded (cement) sawdust composite dating back to 1930s (Frybort et al, 2008).…”

Investigations on sustainable honeycomb sandwich panels containing eucalyptus sawdust, Piassava and cement particles

“…In recent years, sawdust disposal has received more attention in response to growing environmental concerns and advances in science. The sawdust consists of lignin, cellulose and hemicellulose, which in principle can be used to produce fuel [12], fertilizer [13], filler of polymers [14][15] and composites [16][17] and others. Dai and Fan [10] have investigated biocomposites based on wood sawdust with novel modification and gypsum.…”