The silicone masterbatch/linear low density polyethylene (LLDPE) composites with different contents of silicone masterbatch 5%, 10%, 15%, 20%, and 30%) were fabricated by hot pressing sintering method and their tribological performance was tested.
The results show that the silicone masterbatch contents have a significant effect on the frictional performance of the composite. The friction coefficient of composites could decrease with the increase of the silicone masterbatch contents.
When the content of silicone masterbatch is 5%, the wear extent could decrease 90. 7%, which means a little silicone masterbatch could improve the abrasion resistance. As the applied load increases from 10 N to 20 N, the friction coefficient is varied in the range of 0. 33-0.54 and 0. 22-0.41, indicating that high load could contribute to the decline in friction coefficient of the composite. The wear surface structure analysis shows that the plastic deformation of pure LLDPE surface is very serious, and the main wear mechanism is adhesive and abrasive wear. However, after the addition of silicone masterbatch, the wear surface of the composite material becomes smooth, which is mainly caused by slight abrasive.
(This information, excerpted from China Plastic Industry, Study on Tribological Properties of Modified by Silicone Masterbatch, College of Materials Science and Engineering, University of Liaocheng, China.)
However, SILIKE LYSI-412 silicone masterbatch is a pelletized formulation containing an ultra-high molecular weight PDMS dispersed in linear low density polyethylene (LLDPE). It is designed to be used as a lubricant additive in polyethylene compatibles systems to impart benefits such as improved surface properties(lubricity, slip, lower coefficient of friction, silky feeling).
Post time: Jun-30-2021