Ionic liquid (ILS) based fire retardant for wood-based panels

Jussi Ruponen*, Jari Kukkonen

*Corresponding author for this work

Research output: Contribution to conferencePaperScientificpeer-review

1 Citation (Scopus)


This study presents a novel approach for fire protection of wood-based panels for construction industry. A low-cost fire retardant, Palonot F1, is based on ionic liquid (ILs), which is a feature leading to ultimate thorough distribution within the material to be protected. Both the chemical composition and the thorough distribution result to a highly powerful and cost-effective fire retardant. Within this study, Palonot F1 treated spruce LVL was manufactured and the combustion properties were studied. According to the results, Palonot F1 fire retardant importantly decreased the charring rate of LVL compared to that of non-treated LVL reference material. In comparison to the non-treated LVL, the charring rate of Palonot F1 treated LVL decreased by ca. 39%. Additionally, during the combustion test, the Palonot F1 treated LVL performed as a quasi-non-combustible material (Q-NC) determined by the Building Standard Law of Japan.

Original languageEnglish
Publication statusPublished - 2021
MoE publication typeNot Eligible
EventWorld Conference on Timber Engineering - Virtual, Online, Santiago, Chile
Duration: 9 Aug 202112 Aug 2021


ConferenceWorld Conference on Timber Engineering
Abbreviated titleWCTE


  • Cone calorimeter
  • Construction industry
  • Fire retardant
  • Flame retardant
  • Ionic liquid
  • Wood-based panels


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