Ultra-high molecular weight polyethylene (UHMW-PE) is well known for its abrasion and chemical resistance. Recently we developed a new application for UHMW-PE as a liner in elastomeric hoses. It was found that the adhesion between UHMW-PE and elastomers such as ethylene-propylene-diene monomer (EPDM) and styrene-butadiene rubber (SBR) is sufficient for practical applications, but the adhesion to nitrile rubber (NBR) is poor. In order to improve the adhesion between NBR and the UHMW-PE liner, (nascent) powder chlorinated polyethylenes were used as interlayers between UHMW-PE and NBR. These powder chlorinated polyethylenes are polymers with a dual nature and are composed of highly chlorinated polyethylene segments compatible with NBR and polyethylene segments compatible with UHMW-PE. In order to achieve sufficient adhesion, the chlorine content of the chlorinated blocks should be at least 15 wt%. If these powder chlorinated UHMW-PEs have a chlorine content of 15 wt% in the chlorinated blocks, dilution with polyethylene hardly affects the adhesive properties, which is an advantage in the practical use of these materials as interlayers.
Menting, H. N. A. M., Voets, P. E. L., & Lemstra, P. J. (1995). The adhesive properties of chlorinated ultra-high molecular weight polyethylene. Journal of Adhesion Science and Technology, 9(7), 889-897. https://doi.org/10.1163/156856195X00761