METHOD OF OBTAINING ELECTROCONDUCTIVE POLYMER COMPOSITION MATERIAL Russian patent published in 2009 - IPC C08J3/20 C08L21/00 C08L23/06 C08K3/04 B29C47/88 

FIELD: chemistry.

SUBSTANCE: invention relates to field of polymer material science, namely to electroconductive materials with positive temperature coefficient of resistance, and can be applied for production of electric heating elements, used for heating of pipelines, intended for transportation of highly viscous products, for instance, oil and oil-products. In invention method mixing of components, pressing with following milting of obtained semi-product to powder-like condition is performed. Composition of material consists of, wt %: 50-55 of rubber mixture B-14, 15-20 superhigh molecular polyethylene, 30-35 coke. First coke is mixed with superhigh molecular polyethylene. Then mixture is pressed under 15 MPA, milted and introduced in raw rubber mixture B-14. Extrusion of composite is carried out at 140-145°C, in head - 150°C, time - 20-25 min.

EFFECT: simplification of method and obtaining of material using available and cheap ingredients.

1 dwg,1 tbl