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<p>This study investigates the tribological performance of stereolithography (SLA)-fabricated UV resin composites reinforced with hexagonal boron nitride (h-BN) and graphene for lightweight and wear-resistant engineering applications. UV resin was reinforced with 0–2 wt% h-BN while maintaining a constant 0.5 wt% graphene content, and specimens were fabricated using SLA followed by UV post-curing. SEM, EDX, and elemental mapping confirmed uniform filler dispersion and improved matrix compactness with increasing h-BN content. Tribological performance was evaluated under dry sliding conditions using a pin-on-disc tribometer at loads of 20–80&#xa0;N and sliding speeds of 100–400 RPM. The coefficient of friction (COF) decreased from approximately 0.62 for neat resin to 0.44 for the composite containing 2 wt% h-BN + 0.5 wt% graphene, representing a reduction of about 29%. Wear loss decreased from 5.8&#xa0;mg to 3.2&#xa0;mg, corresponding to a 45% improvement in wear resistance. Compared with neat resin, the hybrid composites exhibited lower sensitivity to increasing load and sliding speed due to enhanced load-bearing capability and the formation of a stable lubricating tribo-film. Worn surface analysis revealed a transition from severe adhesive–abrasive wear in neat resin to mild abrasive/oxidative wear in the reinforced composites. The results demonstrate that hybrid h-BN/graphene reinforcement is an effective strategy for improving the durability of SLA-printed polymer components intended for tribological applications.</p> Graphical Abstract <p></p>

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High-performance SLA-Printed UV Resin Composites Reinforced with h-BN/Graphene for Enhanced Frictional Stability and Wear Resistance

  • 期刊论文

  • 发表日期：

    2026年7月22日

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  • Rohit G K,
  • Sangamesh C. Managuli,
  • R. Keshavamurthy

摘要

This study investigates the tribological performance of stereolithography (SLA)-fabricated UV resin composites reinforced with hexagonal boron nitride (h-BN) and graphene for lightweight and wear-resistant engineering applications. UV resin was reinforced with 0–2 wt% h-BN while maintaining a constant 0.5 wt% graphene content, and specimens were fabricated using SLA followed by UV post-curing. SEM, EDX, and elemental mapping confirmed uniform filler dispersion and improved matrix compactness with increasing h-BN content. Tribological performance was evaluated under dry sliding conditions using a pin-on-disc tribometer at loads of 20–80 N and sliding speeds of 100–400 RPM. The coefficient of friction (COF) decreased from approximately 0.62 for neat resin to 0.44 for the composite containing 2 wt% h-BN + 0.5 wt% graphene, representing a reduction of about 29%. Wear loss decreased from 5.8 mg to 3.2 mg, corresponding to a 45% improvement in wear resistance. Compared with neat resin, the hybrid composites exhibited lower sensitivity to increasing load and sliding speed due to enhanced load-bearing capability and the formation of a stable lubricating tribo-film. Worn surface analysis revealed a transition from severe adhesive–abrasive wear in neat resin to mild abrasive/oxidative wear in the reinforced composites. The results demonstrate that hybrid h-BN/graphene reinforcement is an effective strategy for improving the durability of SLA-printed polymer components intended for tribological applications.

Graphical Abstract