Xuexi Chen

All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.

1. Introduction In recent years, global research on clean energy transitions and environmental sustainability has grown substantially [1,2,3]. Against this backdrop, coal and gas co-mining has emerged as an advanced mining philosophy, emphasizing the simultaneous and effective extraction of methane during coal production to maximize resource utilization while minimizing safety risks [4].

EP as one of thermosetting materials characterized by two or more epoxy groups, which can be cured in the presence of hardener [1], [2], [3], has been widely utilized across various industries, including the aerospace, automotive, coatings, and electronics industries, due to its high mechanical strength, electrical insulation properties, processability, and dimensional stability [4], [5], [6], [7], [8].