▎ 摘　　要

NOVELTY - The pipe has a multilayer inner pipe (4) made of thermoplastic polymers (1), a composite material surrounding inner pipe, consisting of a thermoplastic polymer composite material and unidirectional continuous reinforcing fibers, and an outer polymer structure (6). The composite material contains barrier layers (5) fused to the composite material by heating. The multilayer inner tube contains barrier layers (2,3) cohesively bonded to the layers of the multilayer inner tube. The barrier layers and the barrier layers are composed of a polymer-matrix composite consisting of a thermoplastic polymer of barrier layers and a filler made of a layered material with a particle thickness of 1-900 nm and an aspect ratio of 50-18,000. A volume fraction in the thermoplastic polymer of the barrier layer from 0.1 to 45%. The barrier layers include continuous unidirectional fibers in a volume fraction of 2-80%, which are surrounded on all sides by a polymer-matrix composite. USE - Composite pipe used in oil, gas industry and hydrogen energy, used to transport gaseous and liquid substances, for transportation of oil, gas, fluids, methanol, hydrogen, mixtures of hydrogen with natural gas, at the device of gas and oil wells, and for repair and hoisting works. Uses but are not limited to transportation of process gases, liquids, media and suspensions, piping systems for water supply, heating, cooling, gas supply, compressed air supply systems, process piping of ships and railway rolling stock, and fire water supply systems and used in industries, such as construction, housing and communal services, the oil and gas industry, and shipbuilding. ADVANTAGE - The gas permeability is reduced and high resistance is provided to delamination of high-pressure thermoplastic composite pipes. The composite material provides a significant proportion of the achievement of high pressure ratings. The composite pipe reduces the likelihood of delamination, violation of the integrity of the composite material due to the impact of torsional stresses in the composite pipe. The reduction in gas permeability is achieved by barrier layers of a polymer-matrix composite, which are distributed throughout the volume of the pipe. The polymer-matrix composite consists of a thermoplastic polymer of the barrier layers and a laminar filler uniformly dispersed in the thermoplastic polymer of the barrier layers. The distribution of barrier layers throughout the entire volume of the composite pipe controls the balance of gas tightness, flexibility and strength of the composite pipe. The adhesion of fibers and the polymer-matrix composite is improved. The manufacturability of the production of thermoplastic composite pipes with a distributed gas barrier is increased. The reduction of gas permeability of high-pressure thermoplastic polymer-composite pipes is achieved. The high resistance to delamination of high-pressure thermoplastic polymer-composite pipes with a non-metallic gas barrier is ensured. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a composite pipe with a distributed gas barrier, consisting of a multilayer inner pipe, a composite material surrounding it, separated by barrier layers. 1Thermoplastic polymer 2,3Barrier layers 4Multilayer inner pipe 5Barrier layers 6Polymer structure