Standard Viscosity Properties Testing
Arjay Performance Products can be tested with a variety of sample sizes, temperatures and spindle / speed geometries - depending on customer requirements, however, the most common is as follows:
Test No. ATI-V-001
Revised: 11-01-04
Determining Filled-Polyester Viscosity Properties
A. Method
An indication of a fluids resistance to flow is obtained with this test.
A immersed spindle is rotated on a calibrated spring and the viscous drag is measured relative to the deflection of the spring with a known k
The rotational speed, size and shape of the spindle and container all contribute to the results reported in centipoise.
B. Apparatus
1. Controlled temperature environment 74 +/- 2 degrees F
2. Humidity at 50% +/- 10% R.H.
3. Type K Thermocouple
4. 400 ml low form griffin beaker (glass, teflon, SS, or HDPE)
5. BrookField Model DV-I Digital Viscometer (or equivalent)
6. Helipath Stand
7. T-Bar Spindles:
T-A for Viscosities of less than 100,000 cPs
T-C for Viscosities of greater than 100,000 cPs
C. Reagents
1. Acetone (or equivalent for cleanup).
D. Procedures
1. Fill beaker to 300 ml +/- 5 %
2. Adjust sample temperature to 77 deg F +/- 1 deg
3. Secure clean spindle and postion Helipath stand so the top of the cycle is at 250 ml and the bottom of the cycle at 50 ml
4. Set initial speed at 2.0 RPM and timer for 3 min beginning with the spindle in the top position.
5. Run viscometer and record final value in centipoise
6. Repeat step 3-5 with the speed set to 20 RPM
E. Calculations
1. The DV-I provides values in centipose requiring no conversions
F. Report
1. Test Temperature
2. Sample Container size
3. Sample volume
4. Viscometer model
5. Test Speeds
6. Length of time to record value
7. Viscosity (in cPs) at low speed
8. Viscosity (in cPs) at high speed
Certificates of Analysis accompany each shipment and can also be obtained from:
[Look for Certificate of Analysis by batch]