Binderless boards made of milled coconut husk: an analysis of the technical feasibility and process restraints

Abstract

The possibility of producing binderless panels made of milled coconut husk, a largely available by-product of the coconut oil industry, has been shown in previous researches. Long pressing times and a high risk of blisters have however hindered the industrial implementation of the process. In this study, a more energy-efficient manufacturing process, involving a tailored degassing step, was developed on a laboratory scale and then validated at an industrial size (2 × 1 m 2 ). To achieve mechanical properties close to the European and Japanese standards for fibreboards and to avoid the delamination of the boards, final densities between 900 and 1000 kg m −3 had to be targeted. Similarly, a successful board production was only possible if the moisture content of the husk was between 10 and 25%. The need for a suitable matforming technology to avoid the risk of warping of the panel was highlighted.

An Investigation of the Effects of Manufacturing Parameters On Properties of Binderless Boards Produced from Abura (Mitragyna Ciliata) Sawdust

“…The manufactured boards from whole coconut husks exhibited characteristics which were similar to, or better than, commercial wood panels. Böger et al [10] investigated the production of binderless panels from milled coconut husk by developing an energy-efficient manufacturing process at laboratory scale. The study found that required moisture content for the successful production of fiberboards using the hot-pressing process was between 10 and 25%.…”

Electrical Characteristics of Dry Cement – Based Composites Modified with Coconut Husk Ash Nanomaterial

“…It has been observed that though coconut husk is a promising material for production of composite ceilings and other insulation panels [14][15][16][17], it is majorly under-utilized. As of April 29, 2019, it was reported in the Guardian Newspaper that increase in global demand for coconut exceeded 500% in the past five years.…”

Environmental performance of social housing in emerging economies: life cycle assessment of conventional and alternative construction methods in the Philippines

“…3 Flowchart of product-and-construction-process-stage (A1-A5) for social house made from reinforced concrete frame and hollow block filling Fig. 4 Flowchart product-and-construction-process-stage (A1-A5) for cement-bamboo frame house (Base Builds 2015) Boeger et al (2017), Snijder et al (2005), Keijsers (2006), TenHave et al (2010) and the Philippine Coconut Authority (2012). The husks are typically considered a waste product.…”

“…Fig. 5 Flowchart product-and-construction-process-stage (A1-A5) for coconut board-based house to be applied in the Philippines (Boeger et al 2017) 2.2.5 Phase B: use phase of the houses LCAs are more often used in exemplary projects with building-integrated technical systems, not for ordinary building stock (Cabeza et al 2014). Multiple studies for exemplary houses state that energy consumption during the use phase (phase B6) of the house contributes 70-90% to the overall life cycle balance (Ortiz et al 2009;Cabeza et al 2014;Abd Rashid and Yusoff 2015).…”

“…Additionally they have properties that naturally balance indoor climates (Habitech 2015). The raw material coconut husk, a waste stream of 16 billion coconuts produced annually in the Philippines, is suitable for pressing into coconut boards for cladding of frame-based houses (Keijsers et al 2006;Philippine Coconut Authority 2012;Boeger et al 2017). With the potential of replacing wood-based boards in a country with massive deforestation, this technology is a third major alternative for the Philippine market.…”