title: Fire-retardant-treated low-formaldehyde-emission particleboard made from recycled wood-waste.
abstract: The objective of this study was to manufacture fire-retardant-treated low-formaldehyde-emission particleboard from recycled wood-waste particles using polymeric 4,4'-methylenediphenyl isocyanate (PMDI) and phenol-formaldehyde (PF) resins. The influence of the PMDI/PF ratio (ratio of particles sprayed with PMDI to particles sprayed with PF, w/w) after fire retardant treatment on formaldehyde emissions, mechanical properties, and surface fire resistant performance of the manufactured particleboard was investigated. The experimental results showed that the formaldehyde emissions linearly decreased with an increasing PMDI/PF ratio. Moreover, the bending strength, internal bond strength, and screw holding strength increased with an increasing PMDI/PF ratio. The thickness swelling of the particleboard was improved by using an increasing PMDI/PF ratio. Furthermore, the fire-retardant-treated low-formaldehyde-emission particleboards fabricated in our study could pass the third grade standard of surface fire resistant performance as specified by CNS 6532.
authors.affiliation: School of Forestry and Resource Conservation, College of Bio-Resource and Agriculture, National Taiwan University, Taipei, Taiwan, ROC.
authors.forename: Song-Yung
authors.initials: SY
authors.lastname: Wang
authors.forename: Te-Hsin
authors.initials: TH
authors.lastname: Yang
authors.forename: Li-Ting
authors.initials: LT
authors.lastname: Lin
authors.forename: Cheng-Jung
authors.initials: CJ
authors.lastname: Lin
authors.forename: Ming-Jer
authors.initials: MJ
authors.lastname: Tsai
mesh_terms: D001709:Biotechnology / Q000379:methods*; D003247:Conservation of Natural Resources; D003252:Construction Materials; D005411:Flame Retardants; D005557:Formaldehyde / Q000737:chemistry*; D017953:Isocyanates / Q000737:chemistry*; D008420:Manufactured Materials; D008422:Materials Testing; D010636:Phenols / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012037:Refuse Disposal; D014465:Ultrasonics; D014934:Wood; D001559:Benzhydryl Compounds
chemical_list: D005411:Flame Retardants; D005557:Formaldehyde; D017953:Isocyanates; D010636:Phenols; D011108:Polymers; C011529:phenol-formaldehyde resin; C005969:4,4'-diphenylmethane diisocyanate; D001559:Benzhydryl Compounds