| PE-HD/纳米SiO_2复合材料的动态流变行为研究 |
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| 引用本文： | 王树苹,郁加华,龚方红.PE-HD/纳米SiO_2复合材料的动态流变行为研究[J].中国塑料,2008(9). |
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| 作者姓名： | 王树苹 郁加华 龚方红 |
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| 作者单位： | 江苏工业学院材料科学与工程学院; |
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| 基金项目： | 江苏省高校自然科学基金资助项目(05KJB430024) |
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| 摘 要： | 研究了高密度聚乙烯(PE-HD)/纳米二氧化硅(SiO_2)复合材料的动态流变行为,探讨了纳米 SiO_2经表面偶联剂处理对复合体系的流变行为影响。实验数据显示,PE-HD/SiO_2体系是假塑性流体,黏度随着 SiO_2含量的增加而增加,当>6%时,黏度发生突变,并出现强烈的剪切变稀,在动态储能模量(G′)、损耗模量(G″)与频率(ω)关系曲线上分别出现第二平台,表明体系因粒子间相互关联、团聚及粒子与基体问相互作用而形成局部有序的逾渗网络结构。而纳米 SiO_2经偶联剂处理后,体系流体类型没有改变,体系黏度下降,对应的 G′、G″与ω关系曲线上没有出现第二平台,复合体系更加均匀。
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| 关 键 词： | 高密度聚乙烯 纳米二氧化硅 逾渗网络结构 动态流变行为 |
Dynamic Rheological Behaviour of PE-HD/Nano-SiO_2 Composite |
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| WANG Shu-ping YU Jia-hua GONG Fang-hong.Dynamic Rheological Behaviour of PE-HD/Nano-SiO_2 Composite[J].China Plastics,2008(9). |
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| Authors: | WANG Shu-ping YU Jia-hua GONG Fang-hong |
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| Affiliation: | Department of Material Science and Engineering;Jiangsu Polytechnic University;Changzhou 213164;China |
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| Abstract: | Dynamic rheological behaviour of high density polyethylene/nano-silica composites was inves- tigated,and the effect of the surface modification of nano-SiO_2 on it was probed.Experimental results show that PE-HD/SiO_2 composites belong to pseudoplastic fluid.The viscosity of the composites in- creased with increasing of SiO_2 content.When the content of SiO_2 is greater than 6 %,the viscosity ap- pears increasing suddenly,and exhibits shear thinning behavior.In the relation curve of the storage moduli(G'),l... |
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| Keywords: | high density polyethylene nano-SiO_2 percolation threshold dynamic rheological behavior |
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