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首页> 外文期刊>Journal of Thermoplastic Composite Materials >Effect of chemical blowing agent on the hygroscopic behavior of HDPE/rice husk flour composites
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Effect of chemical blowing agent on the hygroscopic behavior of HDPE/rice husk flour composites

机译：化学发泡剂对HDPE /稻壳粉复合材料吸湿性能的影响

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摘要

The effect of chemical blowing agent on the cell morphology and long-term water absorption and thickness swelling of composites based on high-density polyethylene/rice husk flour were studied in this research. Composite materials containing high-density polyethylene, rice husk flour, chemical blowing agent and coupling agent were melt compounded using twin-screw extruder. Then, the samples were foamed via batch process using a compression molding machine. The results showed that the water absorption, thickness swelling, cell size and average cell density of composites increased by addition of chemical blowing agent. The mechanism of water absorption of the foamed wood plastic composites under study followed the kinetics of a Fickian diffusion process. Furthermore, adding the chemical blowing agent had effect on water diffusion coefficients and swelling rate parameter (K_(Sr)) of composites.
机译：研究了化学发泡剂对高密度聚乙烯/稻壳粉复合材料的细胞形态，长期吸水率和厚度膨胀的影响。使用双螺杆挤出机将含有高密度聚乙烯，稻壳粉，化学发泡剂和偶联剂的复合材料熔融复合。然后，使用压缩成型机通过分批处理使样品发泡。结果表明，加入化学发泡剂后，复合材料的吸水率，厚度膨胀率，泡孔尺寸和平均泡孔密度均增加。所研究的泡沫木塑复合材料的吸水机理遵循Fickian扩散过程的动力学。此外，添加化学发泡剂对复合材料的水扩散系数和溶胀速率参数（K_（Sr））有影响。

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