FIELD: process engineering.
SUBSTANCE: invention relates to production of tubes and may be used in production of tubes from composite materials. Proposed compound comprises epoxy resin, hardener, reinforcing and friction-decreasing additives, reinforcing fillers, crystalline silicon dioxide with particle diameter varying from 7 to 40 nm in amount of 0.01-10 wt % of the binder.
EFFECT: higher rupture strength, lower wear.
1 ex
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