Page 12 - InnoRenew CoE International Conference 2022
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capsulation of fire retardants in wood modification processes –
An overview of recent activities at Luleå University of Technology
Dennis Jones1,5, Chia-feng Lin2, Olov Karlsson3 and Dick Sandberg4,5
1 Wood Science and Engineering, Luleå University of Technology, Forskargatan 1, S-93197 Skellefteå, Sweden [email: dennis.jones@ltu.se]
2 Wood Science and Engineering, Luleå University of Technology, Forskargatan 1, S-93197 Skellefteå, Sweden [email: chia-feng.lin@ltu.se]
3 Wood Science and Engineering, Luleå University of Technology, Forskargatan 1, S-93197 Skellefteå, Sweden [email: olov.karlsson@ltu.se]
4 Wood Science and Engineering, Luleå University of Technology, Forskargatan 1, S-93197 Skellefteå, Sweden [email: dick.sandberg@ltu.se]
5 Czech University of Life Sciences Prague, Department of Forestry and Biomaterials, 16500 Prague, Suchdol, Czech Republic
Modern construction is moving more towards engineered wood products, such as glulam and cross-laminated
timber (CLT). This increase is driven by the aspiration to deliver high-rise buildings with enhanced environmental
profiles and human well-being. The desire to use wood in construction is pushing the need for fire treatments
capable of meeting a products service life.
Currently, the majority of fire retardants are water soluble, meaning that exposed, uncoated surfaces are prone
to suffer leaching of the treatment over time, meaning that many treatments are regarded as not suited for such
outdoor use.
In recent years, work at Luleå University of Technology has focused on the combination of wood modification
and fire treatment, with an emphasis on encapsulating fire treatment within the modification system, such that
they are permanently held within the wood matrix, yet still capable of imparting their fire-retardant properties.
This poster will give an overview of the work carried out, primarily with the reagent guanyl urea phosphate (GUP).
Keywords: wood modification, fire retardancy, guanyl urea phosphate, encapsulation.
12 1 7 – 1 8 N OVE M B E R 2 0 2 2 I I Z O L A , S LOVE N I A
An overview of recent activities at Luleå University of Technology
Dennis Jones1,5, Chia-feng Lin2, Olov Karlsson3 and Dick Sandberg4,5
1 Wood Science and Engineering, Luleå University of Technology, Forskargatan 1, S-93197 Skellefteå, Sweden [email: dennis.jones@ltu.se]
2 Wood Science and Engineering, Luleå University of Technology, Forskargatan 1, S-93197 Skellefteå, Sweden [email: chia-feng.lin@ltu.se]
3 Wood Science and Engineering, Luleå University of Technology, Forskargatan 1, S-93197 Skellefteå, Sweden [email: olov.karlsson@ltu.se]
4 Wood Science and Engineering, Luleå University of Technology, Forskargatan 1, S-93197 Skellefteå, Sweden [email: dick.sandberg@ltu.se]
5 Czech University of Life Sciences Prague, Department of Forestry and Biomaterials, 16500 Prague, Suchdol, Czech Republic
Modern construction is moving more towards engineered wood products, such as glulam and cross-laminated
timber (CLT). This increase is driven by the aspiration to deliver high-rise buildings with enhanced environmental
profiles and human well-being. The desire to use wood in construction is pushing the need for fire treatments
capable of meeting a products service life.
Currently, the majority of fire retardants are water soluble, meaning that exposed, uncoated surfaces are prone
to suffer leaching of the treatment over time, meaning that many treatments are regarded as not suited for such
outdoor use.
In recent years, work at Luleå University of Technology has focused on the combination of wood modification
and fire treatment, with an emphasis on encapsulating fire treatment within the modification system, such that
they are permanently held within the wood matrix, yet still capable of imparting their fire-retardant properties.
This poster will give an overview of the work carried out, primarily with the reagent guanyl urea phosphate (GUP).
Keywords: wood modification, fire retardancy, guanyl urea phosphate, encapsulation.
12 1 7 – 1 8 N OVE M B E R 2 0 2 2 I I Z O L A , S LOVE N I A
