An experimental study on flame resistant performance by flame resistant method and agents

Flame Retardancy of Wood Products by Spreading Concentration and Impregnation Time of Flame Retardant

“…On the other hand, the preceding study using a com times in this study was similar to a previous study that found a significant improvement of the flame-retardant performance after 30 minutes of impregnation for Korean ash trees, maple trees, and oaks (Lim et al, 2008). However, considering a preceding study that resulted in arelatively low flame-retardant performance with the carbonized length and area of 105.0 mm and 4750 mm 2 respectively after pine wood specimens were immersed for 72 hours, it seems that the optimal impregnation time depends on the species of the tree.…”

“…The amount, method, and number of applications to analyze the flame retardancy with different spreading concentrations were determined based on the results of preceding research on commercial flame retardants (Son and Han, 2014;Seo et al, 2017). It was determined to apply 300 g/m 2 and 500 g/m 2 to the Korean pine plywood, Japanese larch plywood, and Japanese the conditions of a precedent study (Lim et al, 2008;Park et al, 2011Kim et al, 2013) where the specimens were immersed for each treatment time in containers providing complete submergence of the specimens at a temperature of 23 °C and a humidity of 50%. Refer to Table 2 for the flame-retardant treatment methods.…”

“…Anti-inflammatory treatment methods include: application, which sprays or directly coats flame retardants on the surface of the wooden material, lining, which attach metal plates or other non-combustible materials, and impregnation, which penetrates flame retardants into the wooden material, depending on the characteristics of the combustible material (Kim and Hyun, 2009;Cha et al, 2011). For wood materials and wooden products, the anti-inflammatory method of spraying or brushing flame retardants has been typically used after the materials or products are installed in the structures (Min et al, 2012), and research has been conducted on flame retardant impregnation times from 10 minutes up to 240 minutes to apply the impregnation method (Lim et al, 2008;Park et al, 2011;Kim et al, 2012;Kim et al, 2013). As it was reported that application of commercial retardants to a Korean red pine is more effective than impregnation (Choi et al, 2011), research is required to present appropriate treatment methods for different types of flame retardants and treated materials.…”

Experimental Study on the Combustion Characteristics and Human Hazard of Flame-retardant Plywood

“…방염처리라 함은 무기 및 유기재료, 천연재료 등에 방염액 또는 표면 코팅 재료를 적용하는 것을 말하며, 이때 방염액이란 가연성재료에 대하여 형상 등이 변형되지 않고 방염 성능을 가진 물질을 용매에 용해하여 제조한 액체를 말한다 (Park et al, 2008;. 국내에서 주로 사용되고 있는 방염액의 주성분은 붕소 및 인, 질소 계열로 구성되어 있으며 (Lim et al, 2008;Choi et al, 2011), 특히 실내에 적용이 용이한 방염액으로는 목재의 보존성능을 유지하면서 방염 성능 또한 향상할 수 있는 인계 방염액의 사용이 증가하는 추세이다 (Chow, 2015;Park, Lee, et al, 2011).…”