Use Of Waste Powder Coatings As Binders For The
Manufacture Of Composite Materials
Author(s)
A. C. Abhyankar, N. R. Edmonds & A. J. Easteal
Abstract
Powder coatings are 100% solid dry powders that are used to coat a wide variety
of substrates. They are considered an environmentally friendly coating option
with no volatile emissions and minimal overspray wastage. Fines (5% of the
powder manufactured) that are not fit for application are also generated during
production. Reworking them into usable powder is a costly and cumbersome
process and hence they are not reclaimed. For this study three powder coating
thermosetting powders were selected. Composites were made by using waste
powder coating powders (WPCP) and fines as a primary binder, along with
secondary binders and sawdust as the reinforcing material. Scanning electron
microscopy (SEM) and differential scanning calorimetry (DSC) were used to
characterise composite boards formed using compressive moulding. The
composite boards resemble particle boards and were tested for their mechanical
properties according to the prescribed standard (AS/NZS 1895.1:2004 for
Reconstituted Wood Based Panels). All results confirmed that the composite
boards had mechanical performances comparable with conventional commercial
boards. As they are constructed wholly from industrial waste materials these
particle boards are novel products, and commercialization of this industrial
ecological product is envisioned.
Keywords: powder coatings, waste, fines, composites, particleboards, physical
and mechanical properties, SEM, thermal analysis, DSC.
1 Introduction
Powder coatings are a dry powder paint technology used to coat a wide variety
of conductive substrates, ranging from metals to specially treated wood. They
Keywords
powder coatings, waste, fines, composites, particleboards, physical
and mechanical properties, SEM, thermal analysis, DSC.
Related Book
Other papers in this volume
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