Welcome: U-THERM INTERNATIONAL (H.K.) LIMITED
Principle:
The rapid plasticity value P0 is rapidly compressed by the main body to a cylindrical sample between two parallel compacts to a fixed thickness of 1 mm, and the test sample is kept under compression for 15 s to achieve a temperature balance with the parallel plate, and then tested. A constant pressure of 100 N ± 1 N was applied and held for 15 s. At the end of this phase, the measured thickness of the test is accurately measured by the observation instrument as a measure of plasticity.
Technical parameters:
Host
Temperature
control
100±0.5℃
Load
value
100±1N
Power
supply
AC
220V±10%
Upper
plate size
φ7.3±0.02mm,
φ10±0.02mm, φ14±0.02mm
Upper
plate effective height
3.2mm
Lower
plate
φ15mm
Aging
Chamber
Temperature
control
140±0.2℃
Power
supply
AC
220V±10%
Timing
time
30min
± 5s
The plastic retention rate PRI was measured by aging the sample at a temperature of 140 ° for 30 min through a high-precision special aging box, and the plastic value P30 was measured, and the PRI value was calculated by calculation.
The PRI value is a measure of the thermal oxidation of natural rubber, and a higher value indicates a better thermal oxidation resistance.
Features:
1. Direct electronic temperature control, fast heating and high precision
2. Direct loading with standard weights overcomes the shortcomings of instability and zero drift caused by the stress of the loaded electromagnetic spring.
Standards:
ISO2007, ISO2930
Composition:
It consists of HOST, punching machine (including cutting knife), aging test chamber and thickness gauge.
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