Work

Phytochemical COF ‐Modified Magnesium–Aluminum Hydrotalcite for Improving Flame Retardancy and Mechanical Properties of Epoxy Resins

Year: 2025

Type: article

Abstract: ABSTRACT The high flammability and fume toxicity of epoxy resins (EP) represent the most significant impediments to their broader utilization. In this study, we synthesized a new multifunctional organic–inorganic hybrid flame retardant (PA‐COF@LDH) rich in phosphorus and nitrogen through solvothermal intercalation of COF into Mg/Al‐LDH and subsequent modification with phytic acid (PA). The incorporation of 4 wt% PA‐COF@LDH resulted in EP composites achieving a V‐0 level of UL‐94 with an LOI of 27.1%. The PHRR, THR, and TSP exhibited reductions of 48.29%, 48.32%, and 57.04% compared to EP. The flame retardancy index value reached 4.94, which is classified as “good.” This can be due to the collaboration effect of the coherent and vapor phases. Furthermore, tensile strength and break elongation of EP/4wt%PA‐COF@LDH were enhanced by 18.1% and 32.6%, respectively.

Source: Journal of Applied Polymer Science

DOI: 10.1002/app.57118

Authors: Xiaoli Ji, Yongxin Yu, Jian Liu

Institution: Anhui University of Science and Technology

Language: English

Topic: Flame retardant materials and properties

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: National Natural Science Foundation of China, Anhui University, Key Technologies Research and Development Program, National Key Research and Development Program of China

Awards: G3105171030, G3189515461