PMID- 36677680 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20230123 LR - 20230124 IS - 1420-3049 (Electronic) IS - 1420-3049 (Linking) VI - 28 IP - 2 DP - 2023 Jan 7 TI - Amino Phenyl Copper Phosphate-Bridged Reactive Phosphaphenanthrene to Intensify Fire Safety of Epoxy Resins. LID - 10.3390/molecules28020623 [doi] LID - 623 AB - To improve the compatibility between flame retardant and epoxy resin (EP) matrix, amino phenyl copper phosphate-9, 10-dihydro-9-oxygen-10-phospha-phenanthrene-10-oxide (CuPPA-DOPO) is synthesized through surface grafting, which is blended with EP matrix to prepare EP/CuPPA-DOPO composites. The amorphous structure of CuPPA-DOPO is characterized by X-ray diffraction and Fourier-transform infrared spectroscopy. Scanning electron microscope (SEM) images indicate that the agglomeration of hybrids is improved, resisting the intense intermolecular attractions on account of the acting force between CuPPA and DOPO. The results of thermal analysis show that CuPPA-DOPO can promote the premature decomposition of EP and increase the residual amount of EP composites. It is worth mentioning that EP/6 wt% CuPPA-DOPO composites reach UL-94 V-1 level and limiting oxygen index (LOI) of 32.6%. Meanwhile, their peak heat release rate (PHRR), peak smoke production release (PSPR) and CO(2) production (CO(2)P) are decreased by 52.5%, 26.1% and 41.4%, respectively, compared with those of EP. The inhibition effect of CuPPA-DOPO on the combustion of EP may be due to the release of phosphorus and ammonia free radicals, as well as the catalytic charring ability of metal oxides and phosphorus phases. FAU - Chai, Huiyu AU - Chai H AD - School of Emergency Management, Jiangsu University, Zhenjiang 212013, China. FAU - Li, Weixi AU - Li W AD - School of Emergency Management, Jiangsu University, Zhenjiang 212013, China. FAU - Wan, Shengbing AU - Wan S AD - Zhejiang Jiamin New Materials Co., Ltd., Jiaxing 314027, China. FAU - Liu, Zheng AU - Liu Z AD - Zhejiang Jiamin New Materials Co., Ltd., Jiaxing 314027, China. FAU - Zhang, Yafen AU - Zhang Y AD - Zhejiang Jiamin New Materials Co., Ltd., Jiaxing 314027, China. FAU - Zhang, Yunlong AU - Zhang Y AD - School of Emergency Management, Jiangsu University, Zhenjiang 212013, China. FAU - Zhang, Junhao AU - Zhang J AUID- ORCID: 0000-0002-9878-4629 AD - School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China. FAU - Kong, Qinghong AU - Kong Q AD - School of Emergency Management, Jiangsu University, Zhenjiang 212013, China. LA - eng PT - Journal Article DEP - 20230107 PL - Switzerland TA - Molecules JT - Molecules (Basel, Switzerland) JID - 100964009 SB - IM PMC - PMC9861604 OTO - NOTNLM OT - amino phenyl metal phosphate OT - epoxy resin OT - organic-inorganic hybrid OT - reactive flame retardant COIS- The authors declare no conflict of interest. EDAT- 2023/01/22 06:00 MHDA- 2023/01/22 06:01 PMCR- 2023/01/07 CRDT- 2023/01/21 01:43 PHST- 2022/12/09 00:00 [received] PHST- 2023/01/03 00:00 [revised] PHST- 2023/01/04 00:00 [accepted] PHST- 2023/01/21 01:43 [entrez] PHST- 2023/01/22 06:00 [pubmed] PHST- 2023/01/22 06:01 [medline] PHST- 2023/01/07 00:00 [pmc-release] AID - molecules28020623 [pii] AID - molecules-28-00623 [pii] AID - 10.3390/molecules28020623 [doi] PST - epublish SO - Molecules. 2023 Jan 7;28(2):623. doi: 10.3390/molecules28020623.