earticle

영어

Wood-fiber insulation board (WIB) can be considered a one of core construction materials to provide comfort and safe residential space and to help reducing energy consumption due to its environmental friendly and high heat insulation properties. In this study, low density wood-fiber insulation board was prepared with different types of adhesive and then physical and heat insulation properties, toxic chemical emission property, and combustion characteristics were analyzed. Density of WIB was approximately 0.10 g/cm3. The WIB prepared with MUF (melamine-urea-formaldehyde), PF (phenol-formaldehyde), eMDI (emulsified 4,4′ methylene diisocyanate) showed hard form type board and that of prepared with latex showed soft and flexible form type board. All WIB showed approximately 0.037 W/m․ k, so thermal conductivity of sample did not affected by adhesive types. Formaldehyde emission of WIB prepared with MUF, eMDF, and latex showed SE0 grade except WIB prepared with PF. All WIB satisfied TVOC (total volatile organic compounds) emission regulation (no exceed 400 ㎍/m2․h). TVOC emission level was very lower than that of petroleum-based synthetic insulations. The WIB prepared with MUF and eMDI had less than 3 % thickness swelling properties and higher bending strength was detected on WIB prepared with eMDI. According to cone-calorimeter test, the WIB prepared with MUF showed lower THR and PHRR properties and lower gas emission than other WIBs. For using insulation board made by wood-fiber, MUF adhesive may be better choose based on comprehensive evaluation.