Non-halogenated fire retardant additives for an opaque exterior wood paint
Lindqvist, Wilma (2021)
Lindqvist, Wilma
2021
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2021091346117
https://urn.fi/URN:NBN:fi-fe2021091346117
Tiivistelmä
This thesis focuses on finding effective and environmentally friendly fire retardant (FR) formulations for opaque exterior wood paints. The utilisation of green chemistry and incorporation of mineral-based FRs were deemed to improve the sustainability of wood paints and prolong the material’s life cycle in comparison to those utilising conventional halogenated FR additives. Six additives were selected for further evaluation based on the conducted literature research. These compounds were: 1) epsomite, 2) bentonite, 3) precipitated calcium carbonate (PCC), 4) wollastonite, 5) dolomite and 6) expandable graphite (EG). The reported effective FR properties of the compounds were the main criteria for their selection, besides the possibility of simultaneously improving the physical and mechanical properties of the finished coating product with these fillers. The FR efficacy was assessed with cone calorimeter analysis.
Precipitated calcium carbonate, followed by dolomite were proven to be the most effective additives based on their highest ability to reduce the heat release rate (HRR) in this series of experiments. Hence, these fillers could be vital components in future timber FR products. However, additional research work is still required to optimise components and composition and refine the optimal opaque exterior FR paint.
Precipitated calcium carbonate, followed by dolomite were proven to be the most effective additives based on their highest ability to reduce the heat release rate (HRR) in this series of experiments. Hence, these fillers could be vital components in future timber FR products. However, additional research work is still required to optimise components and composition and refine the optimal opaque exterior FR paint.