November 17, 2025Polymer TestingOpen Access

Powder Aging Effects on Mechanical and Fire Properties of a Flame Retardant PA12 in Laser Powder Bed Fusion

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Assessment reveals reduced mechanical properties and enhanced burning behavior in flame retardant PA12, indicating complex aging effects.

Aging in flame retardant PA12 negatively impacts mechanical properties while improving fire characteristics.
The study indicates a rise in limiting oxygen index by 1.2 pp for aged powder, highlighting its fire resistance.
Cone calorimetry tests reveal that aged flame retardant additives lead to varied heat release rates during ignition.
Chemical interactions, particularly esterification reactions, contribute to the aging effects observed in PA12 mixtures.

Roumeliotis et al. (2025) studied this question.

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