Flame Resistant of Larch Plywood According to Main Ingredients of Fire Retardant Paint

Abstract

The aims of this study is to comparative analyze the flame resistant of Larix kamperi according to fire retardant paints with different main components. Wood, an eco friendly traditional material, has been proven to reduce carbon, drawing attention as a solution to climate change, an international environmental issue. Wood is used as a material for buildings as furniture, interior, and furniture, and greatly satisfied users who require eco-friendliness. However, wood is a factor that increases the fire load in a fire. In previous studies, the fire vulnerability of Cryptomeria japonica, Pinus densiflora, MDF, OSB, cork board, and plain wood plywood was analyzed. As a result, wood without flame retardant treatment was vulnerable to fire. To compensate for this problem, we intend to secure an evacuation time by delaying the ignition time in case of a fire. Accordingly, Flame retardant treatment is implemented in accordance with Article 20 of ?the Enforcement Decree of the Act on the maintenance and Safety Management of Firefighting Facilities?. The main flame-retardant paint used is bromine, a halogen compound, and has high flame resistant. However, it is subject to environmental regulations due to the problem of soot and smoke generation. Eco friendly fire retardant paint are continuously being developed to escape regulations. Therefore, it is necessary to measure the effect of the flame resistant by treating the developed fire retardant paint for each tree species. So, three types of fire retardant paint with different main components are selected and treated on a larch plywood to analyze flame resistant. In this study, after flame time, after glow time, char length, and char area were measured in accordance with Standard of the Nation Fire Agency of Republic Korea. The main components of fire retardant paint are ammonium polyphosphate, emulsion resin, and phosphorus based mixture. Based on each theoretical application amount, 150g/m², 180g/m², and 180g/m² were applied as the flame retardant paint. As a control group, a test specimen that was not with flame retardant treatment was set. The results are as follows. First, ammonium polyphosphate was the most excellent flame resistant. Second, as a result of flame retardant treatment the phosphorus mixture with the same main ingredient on the same type of larch plywood, the effect of flame resistant was different depending on the technology development of each manufacturer. Third, all larch plywood satisfied the flame resistant regardless of the presence or absence of flame retardant treatment. This seems to be because Larix Kamperi itself has a property that does not burn easily. It is expected that the results of this study will be used as basic data for the production of semi noncombustible material suitable for flame resistant Standard of the Nation Fire Agency of Republic Korea in the future.