Rheological behaviors of fumed silica filled polydimethylsiloxane suspensions

被引：24
|
作者：
Yue, Yinglei [1 ,4 ]
Zhang, Chong [2 ]
Zhang, Hui [1 ]
Zhang, Donghai [3 ]
Chen, Xin [2 ]
Chen, Yunfa [3 ]
Zhang, Zhong [1 ]
机构：
[1] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China
[2] State Grid Smart Grid Res Inst, Beijing 102211, Peoples R China
[3] Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2013年 / 53卷
关键词：
Polymer-matrix composites (PMCs); Rheological properties; Interface; Electron microscopy; YIELD-STRESS; POLYMER ADSORPTION; PARTICLE-SIZE; SYSTEMS; MELTS; SLIP; DISPERSIONS; RELAXATION; VISCOSITY; MIXTURES;
D O I：
10.1016/j.compositesa.2013.06.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Rheological behaviors of fumed silica filled hydroxylated polydimethylsiloxane suspensions were investigated in both static and dynamic shear modes. Both viscosity and modulus increase with filler's concentration and specific surface area, however, they decrease with the improved dispersion and proper surface modification. In addition to the effective volume effect of filler's excluded volume and polymer-filler interaction, the polymer-mediated filler-filler interaction contributes significantly. Such an interaction was classified according to the particle distance, and the concept of "inter-particle excess energy" was proposed. A combination of effective volume effect and inter-particle excess energy can be used to interpret the rheological behaviors of the nanocomposites. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：152 / 159
页数：8
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