XSBRL-MODIFIED PHENOLIC RESIN COMPOSITES FOR BASKETBALL COURT SURFACES: MECHANICAL AND MICROSTRUCTURAL CHARACTERIZATION
Abstract
High joint injury rates in basketball are frequently linked to the inadequate shock absorption of traditional court surfaces. This study investigates a carboxylated styrene-butadiene rubber latex (XSBRL)-modified phenolic resin composite, reinforced with magnesium calcium sand, to address the trade-off between safety and durability. Results indicate that 12 w/% XSBRL yields optimal mechanical properties, achieving a 90-day compressive strength of 68 MPa and a flexural strength of 4.5 MPa. Consequently, the composite exhibits superior biomechanics with 55 % impact absorption – significantly outperforming hardwood (35 %) and polyurethane (48 %) – and an ideal static friction coefficient of 0.68. Microstructural analysis via SEM confirmed a brittle-to-ductile fracture transition, clarifying the mechanism behind the enhanced toughness. Furthermore, process reproducibility was secured through an orthogonal experimental design. This optimized XSBRL-modified composite demonstrates a superior balance of performance and protection, offering a robust solution for next-generation basketball court construction.
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