Effect of Wood Species on Water Sorption and Durability of Wood-Plastic Composites
Effect of Wood Species on Water Sorption and Durability of Wood-Plastic Composites
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DOI：
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发表时间：
2008-11
影响因子：
1.4
通讯作者：
Jae-Woo Kim;D. Harper;Adam M. Taylor
中科院分区：
文献类型：
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作者：
Jae-Woo Kim;D. Harper;Adam M. Taylor
木塑复合材料（WPCs）由等聚聚丙烯和10种木材（8种硬木和2种软木）制成。对复合材料的吸水性和耐久性进行了评价。与其他种类的复合材料相比，用东部红杉和奥塞奇橙制成的复合材料吸湿性低，真菌腐烂程度低，抗霉菌能力强。复合材料的颜色最初相差很大，反映了各种木材的颜色差异，但经过户外暴露后，样品的外观相似。金属与木塑制品接触后会在加速暴露过程中腐蚀，镀锌钢与南松和黑胡桃木制成的木塑制品接触时腐蚀最严重。由山核桃、甜树胶、黑樱桃和红橡木制成的复合材料对普通钢的腐蚀比含有其他物种的复合材料更严重。这些结果表明，木材填料的固有特性会影响木塑材料的性能。在wpc中使用耐用的木材品种可以提高产品的耐用性。
Wood-plastic composites (WPCs) were made from isotactic polypropylene and 10 wood species (8 hardwoods and 2 softwoods). Water sorption and durability of the composites were evaluated. WPCs made with eastern redcedar and Osage orange had low moisture sorption characteristics, lower levels of fungal decay, and increased resistance to mold compared with composites made from other species. The color of the composites was initially quite different, reflecting the differences in color of the various wood species, but after outdoor exposure, the samples were similar in appearance. Metals in contact with WPCs corroded during accelerated exposure and the corrosion of galvanized steel was greatest when in contact with WPCs made from southern pine and black walnut. WPCs made from hickory, sweet gum, black cherry, and red oak corroded ordinary steel more than composites containing other species. These results demonstrate that the inherent characteristics of the wood filler can affect the properties of WPCs. The use of durable wood species in WPCs could result in products with improved durability performance.