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Friction

Friction

It is virtually impossible to obtain a meaningful assessment of the friction behavior of plastics, since, in practice, friction processes are accompanied by effects that cannot be defined in a comprehensive manner.

The friction behavior of Desmopan products is determined by their hardness and surface finish. Friction increases as the hardness of the material decreases. “Stick-slip” effects thus develop with flexible products.

Friction behavior is also dependent on the surface against which the friction is tested, as well as on the condition of the surface (wet, dry).

The following table gives an impression of the friction behavior:

based on DIN-EN-ISO-8295

Friction Partners
Coefficients of friction µ (static) Coefficients of friction µ (dynamic) 
Desmopan® DP.3055D; steel No. 1, smooth  0.42  0.42
Desmopan® DP.3055D; steel No. 5, coarse  0.33  0.33
Desmopan® 460; steel No. 1, smooth  0.50  0.37
Desmopan® 460; steel No. 5, coarse  0.29  0.27
Desmopan® DP.3072D; steel No. 1, smooth  0.19  0.17

Friction behavior to TM 900040

Specimen : leather-grained flat specimen 50 x 50
Friction partner : polished steel
Test weight : 2000 g
Mean sliding friction : µD

 F01033 /      
 DP.8785 SO43 [pbw] 100
 
 DP.1080A [pbw]   100
 Plastic specimen: coarse leather grain      
 Dry [µD]  1.37  1.57
 Water [µD]   0.18  0.18
 Oil [µD]   0.15  0.15
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