CPC F16L 11/04 (2013.01) [B29C 48/02 (2019.02); B29C 48/09 (2019.02); B29C 48/151 (2019.02); B29C 71/02 (2013.01); B29D 23/001 (2013.01); B32B 1/08 (2013.01); B32B 25/042 (2013.01); B32B 27/322 (2013.01); C08K 3/041 (2017.05); C08K 3/042 (2017.05); C08K 3/044 (2017.05); C08L 9/02 (2013.01); C08L 15/02 (2013.01); C08L 27/18 (2013.01); C08K 2201/001 (2013.01); C08L 2203/18 (2013.01); C08L 2203/30 (2013.01); C08L 2312/00 (2013.01); F16L 2011/047 (2013.01)] | 18 Claims |
1. A process for producing a hose comprising at least one barrier layer inner layer and an outer layer, wherein the process comprises:
I) extruding a mixture comprising:
a) FTPV pellets comprising at least one thermoplastic fluoropolymer, at least one fluororubber and a crosslinking agent; and,
b) at least one carbon filler selected from carbon black, conductivity carbon black, graphene, carbon nanofiller, or a combination thereof, and/or irradiated PTFE;
to form the barrier layer;
II) applying the outer layer over the barrier layer; and,
III) vulcanizing of the formed hose construction;
wherein the crosslinking agent is selected from the group consisting of diamines, bisphenols, peroxides, polyols and quaternary ammonium salts;
wherein the mixture is extruded at a temperature in the range from 240° C. to 300° C.;
wherein crosslinking of the mixture is carried out during formation of the barrier layer;
wherein the at least one carbon filler promotes the crosslinking; and,
wherein the barrier layer is not meltable at 280° C. after the extruding and before the vulcanizing.
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