MANUFACTURING METHOD OF WOOD-PLASTIC COMPOSITES USING RECYCLED FIBERBOARD

摘要

A method of manufacturing wood plastic composites by using recycled fiberboards is provided to reduce manufacturing costs of the wood plastic composites, manufacture wood plastic composites having excellent physical properties, and replace wooden powder materials of the wood plastic composites with waste fiberboards. A method of manufacturing a wood plastic composite by using recycled fiberboards comprises the steps of kneading 0.1 to 0.2 part by weight of a ultraviolet stabilizer, 0.3 to 0.7 part by weight of a ultraviolet absorbent, and 1 to 30 parts by weight of a reinforcing agent with respect to 100 parts by weight of a mixture of a thermoplastic resin and powders of recycled fiberboards, and extruding or injecting the kneaded materials. The recycled fiberboards are one or more selected from the group consisting of a medium density fiberboard and a high density fiberboard. The ultraviolet stabilizer is one or more selected from the group consisting of 2- ethylhexyl-P-methoxycinnamate and 2,2,2,6- tetramethylpiperidine. The ultraviolet absorbent is one or more selected from the group consisting of 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(2'-hydroxy-3'-tertiary-butyl-5'-methylphenyl)-5-chlorobenzotriazole, and 2-(2'-hydroxy-3',5'-ditertiary- butylphenyl)-5-chlorobenzotriazole. The reinforcing agent is one or more selected from the group consisting of silica, silica having its surface treated with silanetriol, and syndiotactic-1,2-polybutadiene.