Abstract
SummaryMagnesium hydroxide is shown to dehydrate endothermically to magnesium oxide over a similar temperature range to that of the thermal degradation of polyamide. The extent of dehydration in plasma spraying is shown to be a function of particle size. However the research indicates that the use of magnesium hydroxide as a filler in plasma sprayed polyamide composite coatings does not significantly increase the quality of the matrix by suppressing its degradation. A high content of unreacted magnesium hydroxide can be obtained in plasma sprayed polyamide composites by control of the feedstock particle size. The practical implications of the results for potential engineering applications of the composite are discussed in terms of wear resistance and fire retardance.
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