云母填充HDPE的水扩散研究
STUDIES ON MOISTURE DIFFUSION OF MICA FILLED HDPE*
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摘要: 沸水浸泡实验发现,云母填充HDPE的平衡吸湿量随云母体积分数呈线性增加,而用经乙烯等离子体处理的云母填充,可减小该线性关系的比例常数。吸湿量数据分散程度也因处理而大大降低,水透过试样的扩散速度随云母含量的增加而提高,乙烯等离子体处理云母具有降低该扩散速度的作用。根据云母的表面结构和性质,对等离子体处理的作用作了合理解释。Abstract: The moisture diffusion characteristics of high density polyethylene (HDPE) filled with mica which had been tseated by ethylene plasma of radio frequency were studied through the boiling water immersion experiment.It has been found that the equilibrium moisture.content of filled HDPE increases linearly with the volume fraction of mica,and that the proportional constant is smaller and the data dispersivity naccowed if HDPE was filled with,the treated mica;the larger the mica content is the higher the moisture diffusion verocity,and when the mica content is the same,lower diffusion velocity is found in HDPE filled with plasma treated mica.These are explained by the structure charge of mica/HDPE interface resulted from the plasma treatureat.
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Key words:
- Moisture diffusion /
- Filled HDPE /
- Interface /
- Plasma polymerization
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