Composite Wood Decorative Panels-Inorganic And HPL Overlayed

Wood was ever, is being, and will continuousely be widely applied inmany fields such as construction, furniture, inner decoration etc., simplybecause of its natural texture, high strength-to-specifity ratio, and goodhumidty conditioning characteristics. Howerver, wood is heavily flammable.To compare, magnesium chloride oxide cement (MCOC) is highly fireretardant, and is simultaneously plastisizable, acid&alkali resistant, agaistinsects, and sound insulative. As MCOC is reinfouced with fiber glass, thematerial is light-weighted while strong. However, MCOC is easy to scumand/or show efflorescence on surface, which seriously affects its wideappliction.In this disertiation, wood verneers and MCOC fleets are co-laminated tomake fire-retarding decoration A2-grade boards. Influence from differentprocess conditions, i.e., PVAC (with and without curing agent) and PU resins,3/5/7-layer constrctions,100~160g/m2PU content, and1~2mm core veneerthickness, was analyzed.Conclusions:(1) PU resin for wood-MCOC laminates effectively modifiedthe scumming and efflorescence phenomina of MCOC material;(2) change ofcore verneer thickness showed effectiveness on controlling combutionproperties such as heat release of composite boards. All test results satisfiedcorresponding national standards.