Table of contentsSPE: Rheology Workshop
Questions
Goals
What Makes Polymers Unique
Basic Deformations
Entrance and Die Flow
Barrel Pressure Profile
Extrudate Swell
Capillary Shear Flow Equations
Capillary Critical Variables
Simple Extensional Analysis
Simpler Extensional Analysis
Cogswell Capillary Analysis Extensional Flow Equations
Extensional Behavior
Critical Things to Know
What is MFR? Melt Flow Rate
Thermal Degradation Demo Run
Screenshot 1
Screenshot 2
What is IMV Intrinsic Melt Viscosity
IMV Data
Degradation Nylon 6,6
Why Shear Rate Sweeps?
Shear Rate
Velocity Profile for Tube Flow of a Powerlaw Fluid
Melt Properties
Melt Properties II
Melt Properties III
What is Zero Shear Viscosity
Changes in Viscosity with Temperature
Quiz
Viscosity vs Temperature PMMA V044
Polypropylene MFR 3.5
Dowlex, Zytel, Delrin, Noryl
Modeling the Shear Thinning -Viscosity Drop with Rate-
Temperature Dependence with Pressure Effect
Rate Sweeps Fast-Slow or Slow-Fast
Shear Rate Range
Assessing Precision
The Rheology Tube
SQC Verification Linear-Log Viewing Metric
(Simulated)
Load Cell Advantages
Pressure Transducers
Capillary and Parallel Plate
Nylon 6,6 Post-Mortem Ground Parts
Short and Long Die Data
Bagley Correction
Polymer Structure
Polymer Structure II
Polymer Structure III
Polymer Structure IV
Polymer Structure V
LLDPE various Molecular Weights
Molecular Weight and Distribution Effect
Drying of PET
Effect of Moisture on PET
PET Viscosity vs Rate
Pet Screenshot
Melt vs. Solution Viscosity Unfilled Material!
ASTM Round Robin Variability vs. Shear Rate
ASTM Round Robin Variability vs Stress Level
Test: Typical Rheometer Run
Melt Fracture
Spotting Melt Fracture
Standard Laser Measurements
Laser Extrudate Geometry
LDPE 200C Extrudate
LDPE 200C
Why Process Line Rheometers?
Process Line Rheometers
Process Line Rheometers II
Process Line Rheometers III
Process Line Rheometers IV
Comparing Rheological Tests
Typical Rheometer Run
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