Rubber Process Analyzer RPA 8000
ASTM D6204, ASTM D5289, ASTM D6601, ISO 6502
Qualitest rubber process analyzer RPA8000 is an advanced dynamic mechanical rheological test instrument. The RPA8000 is designed to measure dynamic mechanical rheological characteristics of polymers and rubber compounds before during and after cure
The RPA 8000 has many advantages over traditional rubber test methods due to the ability to test under conditions of variable strain frequency and temperature which reveal important differences in rheological, rheometric and dynamic viscoelastic properties. The versatility of this instrument allows for polymers and compounds to be comprehensively characterized, especially in terms of intrinsic material properties, processability characteristics and end product performance.
|Specifications of Rubber Process Analyzer RPA 8000|
|Standards||Complies with ASTM D6204, ASTM D5289, ASTM D6601, ISO 6502|
|Temperature||Microprocessor controlled, ambient to 230°C (446°F)|
|Oscillation Strain||±0.14 to ±1256% (±0.01° to ±90° of arc)|
|Oscillation Frequency||0.0016 to 33Hz (0.1 to 2000rpm)|
|Torque Range||0.001 to 225dN-m (0-200lb-in)|
|Units of measure||Torque: S’, S” (N-m, dN-m, lb-in, kg-cm)
Shear Modulus: G’, G”, G* (Pa, MPa, psi)
Temp: °C, °F
Frequency: cpm, Hz, rad/s
Strain: °arc, %
Optional calculated results: ŋ’, ŋ”, ŋ*, j’, j”, j* tanδ
|Electrical||100/110/120/130VAC ±10%, 50/60±3Hz, 15amp single p
200/220/240/260VAC ±10%, 50/60±3Hz, 7.5amp single p
|Dimensions (WxDxH)||70x80x130cm (28x32x53in.)|
|Automation||Optional 100 sample auto loader available to automatically load and unload samples|
The optional auto loading fixture further improves the productivity of the RPA8000. This option allows for up to 100 samples to be measured without operator interference. The auto loading fixture consists of a rotary tray staging system, sample loading arm, film transport system and controller. (use the two auto loading images for this text these needs to be fairly small)
- Incoming polymer characterization
- Incoming raw material test
- Master batch testing
- Final compound testing
- Cured compound testing
|Polymer||Strain||Molecular weight distribution|
|Stress Relaxation||Consistent processing|
|Optimize cycle times|
|Calandering/ Extrusion||Strain||Gauge control / Die swell|
|Injection Molding||Strain||Mold flow|
|Cure||Temp||Optimized cycle times|
|Minimized cycle times|
|Frequency||Heat build up|
Strain is applied via the oscillating lower die, under full computer control. The strain angle can be precisely varied between 0.05° and 90° in 0.01° increments. Torque modulus and viscosity are measured at pre determined frequency and temperature.
The oscillation frequency of the applied strain cam be varied with great accuracy between 0.03Hz and 33Hz. Torque, modulus and viscosity are measured at pre determined strain and temperature.
During a test, the temperature can be varied between 20°C and 230°C with great precision. Torque, modulus and viscosity are measured under pre determined frequency and strain.
Modulus and torque are measured vs. time after a sample has been subjected to a pre-programmed strain.