Rheological Investigation of Highly Filled Polymers: Effect of Molecular Weight

被引：3
|
作者：
Hnatkova, Eva [1 ,2 ]
Hausnerova, Berenika [1 ,2 ]
Hales, Andrew [3 ]
Jiranek, Lukas [4 ]
Vera, Juan Miguel Alcon [5 ]
机构：
[1] Tomas Bata Univ Zlin, Fac Technol, Dept Prod Engn, Zlin 76001, Czech Republic
[2] Tomas Bata Univ Zlin, Univ Inst, Ctr Polymer Syst, Zlin 76001, Czech Republic
[3] Univ Sheffield, Dept Mat Sci & Engn, Sheffield S1 3JD, S Yorkshire, England
[4] Beckett MIM, Sheffield S9 1TH, S Yorkshire, England
[5] Univ Castilla La Mancha, ETSII, E-13071 Ciudad Real, Spain
来源：
NOVEL TRENDS IN RHEOLOGY VI | 2015年 / 1662卷
关键词：
D O I：
10.1063/1.4918891
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The paper deals with rheological properties of highly filled polymers used in powder injection molding. Within the experimental framework seven PIM feedstocks based on superalloy Inconel 718 powder were prepared. Each feedstock contains the fixed amount of powder loading and the same composition of binder system consisting of three components: polyethylene glycol (PEG) differing in molecular weight, poly (methyl methacrylate) (PMMA) and stearic acid (SA). The aim is to investigate the influence of PEG's molecular weight on the flow properties of feedstocks. Non-Newtonian indices, representing the shear rate sensitivity of the feedstocks, are obtained from a polynomial fit, and found to vary within measured shear rates range from 0.2 to 0.8. Temperature effect is considered via activation energies, showing decreasing trend with increasing of molecular weight of PEG (except of feedstock containing 1,500 g.mol(-1) PEG).
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页数：8
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