Effect of Annealing on Structure and Mechanical Properties of 3D ‐Printed Polymer Composites

ABSTRACT The 3D‐printed polymer composites have shown great potential in various fields, but their mechanical properties have yet to meet the requirements for industrial applications, limiting their widespread use. Annealing treatment has been proven to be an effective method to significantly improve the mechanical properties of 3D‐printed polymer composites. However, the enhancement mechanisms of various annealing methods still require further exploration to achieve the optimal balance between process and performance. This review aims to comprehensively summarize the research progress on annealing treatments to enhance the mechanical properties of 3D‐printed polymer composites over the past decade. It offers a detailed discussion of various annealing methods and their effects on mechanical property enhancement, focusing on the impact of process parameters such as annealing method, temperature, time, and more. Additionally, the relationship between annealing processes, material structure, and mechanical properties is analyzed. This review provides a reference for the design and development of future high‐performance 3D‐printed polymer composites, promoting their advancement in industrial applications.