A green highly-effective surface flame-retardant strategy for rigid polyurethane foam: Transforming UV-cured coating into intumescent self-extinguishing layer

In this paper, the effect of C3H6N6modified by imidazolium based Ionic Liquid 1-butyl-methylimidazolium hexafluorophosphate ([BMIM]PF6) on polyurethane rigid foam flame retardant properties was conducted.The results show that the flame retardant properties of C3H6N6 modified with Ionic Liquid significantly increased and the LOI increased form 22.3 to 24.5. In the modification process, the ionic liquid mass have a very noticeable effect to the flame retardant property and when [BMIM]PF6 and C3H6N6 in quality was 4:6, Fire-retardant effect was best.Compared with the prior to the modification, C3H6N6 modified can increase effective Flame resistance of materials, horizontal burning speed from 67.6mm/min down to 33.4mm/min.Thermal degradation data show that C3H6N6 modified could improve initial decomposition temperature and reminder yield of rigid polyurethane foam,and then heat release reduced, the decomposition controlled,thermal stability increased.

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Synthesis, mechanical properties and fire behaviors of rigid polyurethane foam with a reactive flame retardant containing phosphazene and phosphate

Polymer Degradation and Stability ◽

10.1016/j.polymdegradstab.2015.10.007 ◽

2015 ◽

Vol 122 ◽

pp. 102-109 ◽

Cited By ~ 89

Author(s):

Rong Yang ◽

Wentian Hu ◽

Liang Xu ◽

Yan Song ◽

Jinchun Li

Keyword(s):

Mechanical Properties ◽

Flame Retardant ◽

Polyurethane Foam ◽

Rigid Polyurethane Foam ◽

Reactive Flame Retardant

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Synergistic effect of nano magnesium amino-tris-(methylenephosphonate) and expandable graphite on improving flame retardant, mechanical and thermal insulating properties of rigid polyurethane foam

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2018.08.010 ◽

2018 ◽

Vol 219 ◽

pp. 318-327 ◽

Cited By ~ 14

Author(s):

Lei Liu ◽

Zhengzhou Wang

Keyword(s):

Synergistic Effect ◽

Flame Retardant ◽

Polyurethane Foam ◽

Expandable Graphite ◽

Rigid Polyurethane Foam ◽

Thermal Insulating ◽

Insulating Properties

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Synthesis of a DOPO-triazine additive and its flame-retardant effect in rigid polyurethane foam

e-Polymers ◽

10.1515/epoly-2019-0024 ◽

2019 ◽

Vol 19 (1) ◽

pp. 235-243 ◽

Cited By ~ 2

Author(s):

Lin Liu ◽

Rui Lv

Keyword(s):

Flame Retardant ◽

Polyurethane Foam ◽

Cell Structure ◽

Rigid Polyurethane Foam ◽

Flame Resistance ◽

Limiting Oxygen Index ◽

Flame Retarded ◽

Flame Retardant Properties ◽

Mechanical Performances ◽

Halogen Free

AbstractA DOPO (9,10-dihydro-9-oxa-10-phosphaphen-anthrene-10-oxide)-based halogen-free flame retardant (ODOPM-CYC) was synthesized and incorporated in rigid polyurethane foam (RPUF). The structure of ODOPM-CYC was characterized by Fourier transform infrared spectra (FTIR), 1H NMR and 31P NMR. The effects of ODOPM-CYC on the flame resistance, mechanical performances, thermal properties and cell structure of RPUF were also investigated. The results showed that the incorporation of ODOPM-CYC strikingly enhanced flame retardant properties of RPUF. The flame retarded RPUF acquired a limiting oxygen index (LOI) value of 26% and achieved UL-94 V-0 rating with the phosphorus content of 3 wt%. The smoke production rate (SPR) also showed an obvious decrease and total smoke release (TSR) was 39.8% lower than that of neat RPUF. Besides, the results demonstrated that the incorporation of ODOPM-CYC provided RPUF better thermal stability but did not show any obvious influence on its thermal conductivity.

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