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Preparation and flame retardancy of phosphorus-amine ion liquid type epoxy resin flame retardant
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Shaowen WO1, Yisong LIU2, Bing LIANG1, *, Jiapeng LONG1, *
Fine Chemicals | 2026, 43(5) : 1030 - 1036
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Fine Chemicals | 2026, 43(5): 1030-1036
Preparation and flame retardancy of phosphorus-amine ion liquid type epoxy resin flame retardant
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Shaowen WO1, Yisong LIU2, Bing LIANG1, *, Jiapeng LONG1, *
Affiliations
  • 1.School of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China
  • 2.Liaoning Institute for High-Quality Development of Private Education, Shenyang University of Urban Construction, Shenyang 110167, Liaoning, China
Published: 2026-05-15 doi: 10.13550/j.jxhg.20250173
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A phosphorus-amine ionic liquid, 1-(3-amino-3-oxopropyl)-3-propyl-imidazolium phosphate (IL) was prepared by quaternization reaction and ion exchange method using acrylamide, imidazole, 1-bromopropane, and sodium hypophosphite as raw materials, characterized via FTIR, 1HNMR and HRMS, and then used as curing agent to obtain epoxy resin (EP) composites. The effect of IL mass fraction on the properties of EP composites was analyzed through SEM characterization, tensile strength, impact strength tests, limiting oxygen index, horizontal/vertical burning, thermal analysis and conical calorimetry experiments. The results showed that the addition of IL improved the mechanical properties of EP composites. When the mass fraction of IL was 6.4%, the impact strength of the prepared EP composites (EP-2) increased by 46.16% compared with that of pure EP (EP-0). Meanwhile, the addition of IL broadened the decomposition temperature range of EP composites, increased the residual carbon content, and significantly reduced the maximum heat release rate (PHRR) and total heat release (THR). When the mass fraction of IL was 8.4%, the PHRR of the prepared EP composites (EP-3) was 664.95 kW/m2, a decrease of 27.86% compared with that of EP-0 (921.72 kW/m2), while THR decreased from 119.27 kJ/m2 of EP-0 to 86.39 kJ/m2, a decrease of 27.57%. The ultimate oxygen index reached 30.6%, and the horizontal/vertical combustion level reached V-0 level.

halogen-free flame retardants  /  ionic liquids  /  epoxy resin  /  composites  /  mechanical properties  /  flame retardancy  /  functional materials
Shaowen WO, Yisong LIU, Bing LIANG, Jiapeng LONG. Preparation and flame retardancy of phosphorus-amine ion liquid type epoxy resin flame retardant[J]. Fine Chemicals, 2026 , 43 (5) : 1030 -1036 . DOI: 10.13550/j.jxhg.20250173
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Year 2026 volume 43 Issue 5
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Article Info
doi: 10.13550/j.jxhg.20250173
  • Receive Date：2025-03-14
  • Online Date：2026-08-20
  • Published：2026-05-15
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  • Received：2025-03-14
  • Accepted：2025-04-17
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Affiliations
    1.School of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China
    2.Liaoning Institute for High-Quality Development of Private Education, Shenyang University of Urban Construction, Shenyang 110167, Liaoning, China
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https://castjournals.cast.org.cn/joweb/jxhg/EN/10.13550/j.jxhg.20250173
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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