High Temperature TPU
Eurothane HT 193 ACC/2
(Polcaprolactone/PPDI based TPU for High Temperature Applications)
The latest addition to our portfolio is a range of TPUs based on the isocyanate PPDI.
These products offer a combination of properties not previously obtained with polyurethane.
Resistance to abrasion, flex cracking, cutting and tearing are all taken to a significantly higher level together with rebound resilience and very low compression set at elevated temperatures.
The upper continuous-use temperature limit has for some PPDI elastomers been raised from 85ºC for conventional TPU to a remarkable 135ºC.
Examples of applications:
PPDI is especially suitable for applications in demanding environments:
- Hot moist environments
- Oily environments
- Tear and abrasion prone applications
- Power driven, repeat motion applications
Applications include hydraulic seals, gaskets, pump diaphragms, drive belts, shock absorbers, rollers and load bearing wheels. Industries covered are automotive, food industry, mining, agriculture and many more.
|| Shore A/D
|Elong. at Break
at 100% elongation
at 300% elongation
23ÂºC for 70 hrs
70ÂºC for 20 hrs
Physical Property Definitions
The relative resistance of a material's surface to indentation by an indentor of specified dimensions under a specified load. Numerical hardness values represent either depth of penetration or convenient arbitrary units derived from depth of penetration. The hardness of elastomers is measured in the SHORE A and D scales, according to DIN 53505
Tensile properties are a measure of the force necessary to stretch a plastic and the percentage of stretching the plastic can withstand before breaking. Measurements are conducted according to DIN 53504.
- Tensile modulus indicates the amount of force necessary to elongate a sample by, say, 100% and 300% of its original length.
- Ultimate tensile strength is the maximum stress a material withstands at the point of rupture.
- Elongation at break is the total elongation of a sample at the point of rupture.
Tear resistance is the force per unit of thickness required to initiate and propagate a tear in a direction perpendicular to the direction of the applied stress. It is measured according to DIN 53515
This measures the resistance of a material to wearing away by contact with a rotating abrasive cylinder of a specified coarseness, under a specified load. It is measured according to DIN 53516
In this test the specimen is compressed by 20% or 25% of its original thickness (depending on hardness) and subjected to specified temperatures for specified times, e.g. 22 hrs @ 70ºC. The compression set figure is the difference between the original thickness of the specimen and the thickness after testing, expressed as a percentage of the original deflection employed.
Please Note: Eurothane carries out its physical property evaluation on specimens which have been dry heat annealed for 16 hours at 100ºC.