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A Study on the Effect of Expandable Graphite and Metal Hydroxides on the Properties of Wood Plastic Composites (WPCs)  

Kim, Seungkyun (Department of Forest Products and Biotechnology, Kookmin University)
Lee, Danbee (Department of Forest Products and Biotechnology, Kookmin University)
Lee, Sun-Young (Department of Wood Processing, Korea Forest Research Institute)
Chun, Sang-Jin (Department of Wood Processing, Korea Forest Research Institute)
Kim, Birm-June (Department of Forest Products and Biotechnology, Kookmin University)
Publication Information
Journal of the Korea Furniture Society / v.27, no.4, 2016 , pp. 392-398 More about this Journal
Abstract
Wood-plastic composites (WPCs) composed of mainly wood flour and thermoplastics have attracted considerable attentions due to advantages of cost effectiveness, high durability, and microbial resistance. However, relatively poor fire resistance of WPCs from low thermal stability of wood and plastics prevents further uses. This study investigated the effect of expandable graphite (EG) and aluminium hydroxide (AH)/magnesium hydroxide (MH) on the properties of WPCs. The combined incorporation of both EG and metal hydroxide (i.e., AH or MH) into formulations leads to higher flexural modulus of filled composites compared to neat PP and WPC. In thermal properties, EG played an important role in improving thermal stability of filled composites by suppressing thermal decompositions of wood and PP. Moreover, EG showed better water absorption features. From this research, it can be said that EG and metal hydroxides have potentials as effective reinforcement, flame retardant, and moisture barrier.
Keywords
wood plastic composites (WPCs); expandable graphite; metal hydroxide; flexural modulus; thermal stability;
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Times Cited By KSCI : 3  (Citation Analysis)
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