The certification of the rheological properties of standard reference material SRM 2490, a non-Newtonian fluid consisting of polyisobutylene dissolved in 2,6,10,14-tetramethylpentadecane, is described. The viscosity and the first normal stress difference were measured in steady shear at rates between 0.001 s-1 and 100 s- 1 at 0 C, 25 C and 50 C. The linear viscoelastic storage modulus G' and loss modulus G'' were also measured in dynamic oscillatory measurements between 0.04 rad/s and 100 rad/s in the temperature range between 0 C and 50 C and master curves calculated using time temperature superposition.
| Author: Nist |
| Publisher: Createspace Independent Publishing Platform |
| Publication Date: Dec 18, 2013 |
| Number of Pages: 102 pages |
| Binding: Paperback or Softback |
| ISBN-10: 1494741393 |
| ISBN-13: 9781494741396 |
