Structural Optimization of PA12/MVQ@POE‐g‐MAH Ternary Composite for Superior Toughness and Low‐Temperature Resistance

Abstract To enhance the low‐temperature toughness and resistance of the engineering plastic polyamide PA12, this study introduces novel PA12/MVQ@POE‐ g ‐MAH ternary composites using a two‐step process and dynamic curing. Analytical results indicate that incorporating MVQ@POE‐ g ‐MAH into the PA12 matrix markedly enhances its toughness and heat resistance. As the MVQ@POE‐g‐MAH content increases, the elongation at break of PA12 composites significantly expands from 52.83% to 204.69%, and the notch impact strength escalates from 8.69 to 74.34 kJ m −2 . In addition, the brittleness temperature of PA12 decreases from −59.5 to −67.0 °C. Experimental findings confirm that POE‐ g ‐MAH is dispersed at the interface between MVQ and PA12, creating an encapsulated structure of MVQ@POE‐ g ‐MAH. This enhancement significantly broadens the potential applications of PA12 by improving its toughness, and resistance to both low and high temperatures, as well as impact endurance.