Self-lubricating coating via PDMS microgel dispersion.

Since the powerful lubricant PDMS cannot be used directly in the PAI coating, the microgel particle dispersion used to add to the PAI solution is described.
in the production of paint-coated copper wire coated with high-performance polymer poly (alamide-alamide), friction between multiple polymer surfaces and between polymers and gap substrates is an important issue. However, low friction is essential to increase the build-up density that can be achieved by wires and therefore to improve the efficiency of the

. As an existing technology, lubrication is carried out by seeping out inefficient lubricants or adding wax layers, which involves additional production steps.
has greatly improved friction
the most effective migration lubricant for this application is polydymethane (PDMS). However, the polymer cannot be used in a free form due to adverse migration behavior at the high temperature inherent in the method. As an effective method to solve this problem, the crosslink between PDMS and non-hydro microgels is studied. These microgel particles can be incorporated directly into the PAI coating system and show very favorable migration properties due to the formation of a stable, uniform layer at the top of the PAI coating.
compared to other self-lubricating systems, the corresponding friction tests have shown a significant improvement in friction performance and the same high performance as other wax layers, but only for one-pot coating formulations.
the study was published in the 146th volume of Progress in Organic Coatings in September 2020.
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