Abstract
The preparation of bio-based epoxy resin with excellent thermal properties and flame retardant properties from green renewable resources had attracted extensive attention in recent years. Starting from the driving structural properties, the purpose of this study is to prepare multifunctional triglycidylester- diphenolic acid- bio-based epoxy (TDBE) with diphenolic acid (DPA), triglycidyl isocyanurate (TGIC), and 9,10-dihydro-9-oxa-10-phosphophenanthrene 10 oxide (DOPO) as raw materials. TDBE/DDM and bisphenol A epoxy resin curing agent (DGEBA/DDM) was prepared with 4,4 '- diaminodiphenylmethane (DDM) as curing agent. TDBE/DDM has excellent fire safety. LOI value rose from 24.5 to 42.0%, and the UL-94 test level passes V-0 level. In the cone calorimeter test, the peak heat release rate (pHRR) is decreased by 69.3%. Besides, the lap shear TDBE adhesive strength was 42.9 MPa, which increased by 62.5%. This new multifunctional bio-based flame retardant epoxy resin provides a broader application prospect for high-performance materials.
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Acknowledgements
The authors acknowledge financial support from Youth Growth Science and technology plan project of science and Technology Department of Jilin Province (20210508051RQ)Science and technology research project of Jilin Provincial Department of Education (JJKH20210755KJ).
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Conceived and designed the experiments: LS, YA. Contributed reagents/materials /analysis tools: YA. Performed the experiments: LS, ML, JM, GY and LS: contributed significantly to analysis and manuscript preparation. LS: performed the data analyses and wrote the manuscript. LS and YA: helped perform the analysis with constructive discussions.
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**e, R., Yuan, Y., Sun, P. et al. Design of epoxy resin with sustainability, high adhesion and excellent flame retardancy based on bio-based molecules. J Mater Sci 57, 13078–13096 (2022). https://doi.org/10.1007/s10853-022-07399-y
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DOI: https://doi.org/10.1007/s10853-022-07399-y