A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fire performance of oak wood modified with N-methylol resin and methylolated guanylurea phosphate/boric acid-based fire retardant
Highlights We chemically modified wood with a mixture of N-methylol resin and fire retardant. N-methylol resin facilitates the flammability of wood. Incorporation of methylolated GUP and boric acid restrains the combustion of wood. Cell walls with thick layers and cracks are observed as a typical charring pattern. The modified wood is useful for application in public settings.
Abstract Modification with 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU) can dimensionally stabilize wood and improve the durability, but does not change its flammability. In this study, fire retardant (methylolated guanylurea phosphate (MGUP) and boric acid (BA)) was incorporated in DMDHEU to treat Oak wood (Quercus rubra L.). Thermogravimetry and cone calorimetry showed that combinative treatment with DMDHEU/MGUP/BA caused a considerable decrease in the pyrolysis temperature, heat release, and smoke production. A full-scale fire test indicated that DMDHEU/MGUP/BA modified wood can be classified as Bfl-s1. Findings demonstrated that combinative treatments can substantially reduce the fire risk for DMDHEU-modified wood, making them especially useful for application in public settings.
Fire performance of oak wood modified with N-methylol resin and methylolated guanylurea phosphate/boric acid-based fire retardant
Highlights We chemically modified wood with a mixture of N-methylol resin and fire retardant. N-methylol resin facilitates the flammability of wood. Incorporation of methylolated GUP and boric acid restrains the combustion of wood. Cell walls with thick layers and cracks are observed as a typical charring pattern. The modified wood is useful for application in public settings.
Abstract Modification with 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU) can dimensionally stabilize wood and improve the durability, but does not change its flammability. In this study, fire retardant (methylolated guanylurea phosphate (MGUP) and boric acid (BA)) was incorporated in DMDHEU to treat Oak wood (Quercus rubra L.). Thermogravimetry and cone calorimetry showed that combinative treatment with DMDHEU/MGUP/BA caused a considerable decrease in the pyrolysis temperature, heat release, and smoke production. A full-scale fire test indicated that DMDHEU/MGUP/BA modified wood can be classified as Bfl-s1. Findings demonstrated that combinative treatments can substantially reduce the fire risk for DMDHEU-modified wood, making them especially useful for application in public settings.
Fire performance of oak wood modified with N-methylol resin and methylolated guanylurea phosphate/boric acid-based fire retardant
Jiang, Tao (author) / Feng, Xinhao (author) / Wang, Qingwen (author) / Xiao, Zefang (author) / Wang, Fengqiang (author) / Xie, Yanjun (author)
Construction and Building Materials ; 72 ; 1-6
2014-09-03
6 pages
Article (Journal)
Electronic Resource
English
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