Normal Stress Behavior of Linear Polyethylene Melts in a Rotational Parallel‐Plate Rheometer

1969 ◽  
Vol 13 (1) ◽  
pp. 39-58 ◽  
Author(s):  
L. L. Blyler
Keyword(s):  
Normal Stress ◽  
Parallel Plate ◽  
Linear Polyethylene ◽  
Stress Behavior ◽  
Polyethylene Melts

scholarly journals Chain Dynamics of Ring and Linear Polyethylene Melts from Molecular Dynamics Simulations

2011 ◽  
Vol 44 (7) ◽  
pp. 2311-2315 ◽  
Author(s):  
Kahyun Hur ◽  
Cheol Jeong ◽  
Roland G. Winkler ◽  
Naida Lacevic ◽  
Richard H. Gee ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Linear Polyethylene ◽  
Chain Dynamics ◽  
Polyethylene Melts ◽  
Dynamics Simulations

Prediction of Infinite Dilution Benzene Solubility in Linear Polyethylene Melts via the Direct Particle Deletion Method

2010 ◽  
Vol 114 (19) ◽  
pp. 6233-6246 ◽  
Author(s):  
Maria Grazia De Angelis ◽  
Georgios C. Boulougouris ◽  
Doros N. Theodorou
Keyword(s):  
Infinite Dilution ◽  
Linear Polyethylene ◽  
Polyethylene Melts

scholarly journals Magneto-Induced Normal Stress of Magnetorheological Gel Under Quasi-Statically Monotonic and Periodically Cyclic Loading

2021 ◽  
Vol 8 ◽  
Author(s):  
Runsong Mao ◽  
Xudan Ye ◽  
Huixing Wang ◽  
Guang Zhang ◽  
Jiong Wang
Keyword(s):  
Magnetic Field ◽  
Cyclic Loading ◽  
Shear Strain ◽  
Normal Stress ◽  
High Efficiency ◽  
Close Relation ◽  
Stress Behavior ◽  
Final Steady State ◽  
Soft Polymer ◽  
Mr Effect

Magnetorheological (MR) gel, an analog of MR fluid, is a novel kind of magnetic-responsive material. In this article, the influence of quasi-statically monotonic loading and periodically cyclic loading on the normal stress behavior of MR gel (MRG) is systemically investigated. Firstly, carbonyl iron powder (CIP) and soft polymer were adopted for the fabrication of MRG. Then, the variations of normal stress with shear strain were tested under different excited magnetic fields, shear rates, CIP contents, and shear strain amplitudes. It was found that the normal stress behavior of MRG exhibits three prominent stages: a sudden rise at the beginning, followed by a rapid decrease, and then a final steady-state value. The experiments also indicated that the excited magnetic field, compared with other influencing factors, has the most critical effect on the normal stress behavior of MRG. The corresponding mechanisms of various phenomena were methodically discussed. Furthermore, the ratio of shear stress to normal stress was proposed to better comprehend the mechanism of the evolution of internal microstructures of MRG and MR effects from a novel perspective. The results implied that the ratio has a close relation to the excited magnetic field and CIP content of MRG. The increase of normal stress is helpful for the fabrication of MRG with a high-efficiency MR effect.

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