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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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加工工艺对气相生长碳纤维填充聚苯乙烯复合体系导电逾渗与动态流变特性的影响
DOI: 10.3724/SP.J.1105.2011.10376, PP. 1305-1310
Keywords: 气相生长碳纤维,聚苯乙烯,动态流变行为,共混工艺,电逾渗
Abstract:
研究了加工工艺对气相生长碳纤维(VGCF)填充聚苯乙烯(PS)复合体系导电逾渗与动态流变特性的影响.结果表明,低转速、短时间混合有利于VGCF形成较为完善的逾渗网络结构,其复合体系逾渗阈值低、导电性能好.使用作者提出的两相模型描述VGCF/PS复合体系的流变特性,发现低转速、短时间(30r/min、5min)混合条件下所制得的复合体系应变放大因子(Af)、填料相特征模量(Gf1′、Gf0″)较高.建立了加工工艺-填料相结构-性能间的关联提高混合转速(30r/min→120r/min)、延长混合时间(2.5min→10min),有利于VGCF在PS中的分散,降低了逾渗阈值以上复合体系的导电性、填料相特征模量(Gf1′、Gf0″).研究结果证明,作者所提出的两相模型可间接反映填料相结构信息.
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