Characteristics of Flame Retardent and Mothproof Conservation of Microwave Heated wood

Abstract

It was found that test piece heated rapidly by 3 kW microwave for 5 minutes satisfies the targeted temperature and the percentage of moisture content, and the highest rate of weight increase is obtained in case of 120 minute immersion in the mixture of phosphates and heterocyclic compounds, from the result of such analysis as: kiln drying schedule, flame retardent by flammability test, insect

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

“…The impregnation time and the flame retardant's performance showed a positive correlation for the first 60 minutes, but the curve grew flatter gradually after that.After 90 minutes into the impregnation, the carbonized length and the carbonized area rose. This demonstrates that little flame retardant penetrates into wood after 60 minutes, which is consistent with the preceding study(Kim et al, 2013), where the weight of imported sawn wood hardly increased after the first 60 minutes of impregnation. The flame-retardant performance of birch plywood boards with different impregnationSample Remaining flame time (sec) Smoldering time (sec) Carbonized area (mm 2 ) Carbonized length (mm)…”

“…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.…”

Insect Repellency and Crop Productivity of Essential Oil Films

“…Insect repellents, on the other hand, have been used primarily in wood preservation. There have been studies on the properties of the flame retardant composite preservation treatment of microwave-heated wood (Lim et al, 2013) and on the interfacial electrochemical properties of the fixation properties of new water-soluble preservative insect repellents (Kim, 1996). However, there have been no domestic studies on insect-repellent effects of EOs films.…”