UA59354C2 - coating applied on to the inner surface of a pipe, method for applying it on the inner surface of the pipeline, two-layer blank part for the coating and method for making it - Google Patents

Abstract

The present invention relates to a coating applied on to the internal surface of a pipe, wherein said coating consists of two coaxial tubular and film-type envelopes (2, 3) made of a thermoplastic polymer. The outer envelope (2) rests against the pipe (1) internal surface, while the inner envelope (3) is separated from the first by a coaxial main reinforcement layer (4) impregnated with a solidified polymeric binder. The inner envelope (3) is made in the shape of a multiple-component homogeneous system that comprises at least one polymer selected from the group of thermoplastic polymers having a relative stretching ratio of at least 200 % and a melting point of at least 100 °С. This homogeneous system also comprises a structural modifier of the selected polymer. The envelope (3) and the layer (4) arc formed with enjoined edges in at least one place along the coating axis. wherein said edges (6, 7) are sealed together so that the envelope (3) and the layer (4) form a monolithic structure. The present invention also relates to a two-layered semi-finished part that comprises the inner envelope (3) linked to the reinforcement layer (4), wherein said envelope is obtained from the multiple-component homogeneous system having the above-mentioned composition

Description

Description of the invention

This invention relates to the field of construction, namely to the protection of the inner surface of the pipeline from mechanical damage, corrosion or from the formation of unwanted deposits, and more precisely relates to the coating of the inner surface of the pipeline, the method of applying this coating, the two-layer blank of such a coating and the method of obtaining this two-layer blank.

Prior art

The coating of the inner surface of the pipeline is known, which is a three-layer structure containing two 70 coaxially located tubular film shells made of thermoplastic material, between which there is a reinforcing layer impregnated with a proven binder (EC, A, 2592457).

There is a known method of applying the specified coating to the inner surface of the pipeline, which consists in the fact that tubular film shells based on thermoplastic polymer material are placed outside the pipeline coaxially, one of which is external, designed to adhere to the internal surface 12 of the pipeline, and the second is internal, which performs the function of a blower, is separated from it by a reinforcing layer impregnated with a thermosetting binder, and a three-layer coating blank is obtained, then this blank is introduced into the pipeline, the coolant is fed under pressure into the cavity of the inner shell until the binder is completely solidified (EC, A, 2592457). At the same time, the inner shell is made of a film-like polymer material that has fibers (polyester or glass) implanted by calendering on its outer surface facing the reinforcing layer.

When placing a coaxial reinforcing layer around such an inner shell, as well as in the process of transporting the described coating blank inside the pipeline, partial sticking of the inner film with the reinforcing layer is possible, which leads to the formation of folds, distortions of the inner film shell, etc., which causes a deterioration in the quality of the coating. with

A known coating of the inner surface of the pipeline, containing two coaxially located tubular Ge) film shells based on thermoplastic polymer material, one of which is external, adjacent to the internal surface of the pipeline, and the other is internal, separated from it by a coaxial reinforcing layer impregnated with a proven polymer binder (KY, A, 2037734).

In the specified coating, the inner film shell is connected to the reinforcing layer only due to the adhesion between the specified shell and the hardened binder impregnated with this reinforcing layer, which does not ensure effective connection of the inner film shell with the entire surface of the reinforcing layer and the monolithicity of the coating of the inner surface of the pipeline as a whole and leads to partial peeling of the film and, as a result, to the deterioration of the properties of the coating.

There is a known method of obtaining a coating, which consists in the fact that 3 tubular film shells based on a thermoplastic polymer material are placed outside the coaxial pipeline, one of which is the outer one, designed to adhere to the inner surface of the pipeline, and the second one is the inner one, separated from it by a reinforcing layer , impregnate with the last thermosetting polymer binder and obtain a three-layer coating blank, which is introduced into the pipeline, a hot coolant - steam under pressure is fed into the cavity of the inner shell and the polymer binder is hardened (KI, A, 2037734). C 50 During the transportation of the above-mentioned workpiece inside the pipeline from one end to the other, due to the loose fit of the inner film shell to the reinforcing layer, deformations, distortions and the formation of defective areas of this shell are possible, which leads to the complication of the technological process of coating and a decrease in the quality of the latter, which manifests itself in the formation of assemblies, folds on the surface of the coating, etc., the consequence of which is a change in the turbulent flow of the transported medium, an increase in energy for its transportation and a decrease in the service life of the coating. i-th Known coating, in which for effective adhesion of the inner film shell to the hardened (se) binding and reinforcing layer, a two-layer coating blank (OV, A, 1569675) is used, consisting of an inner tubular film shell connected to the reinforcing layer . o Such a blank is obtained (OV, A, 1569675) by applying a layer of polyurethane from a melt on a canvas with 20 synthetic felt, from which a tubular structure is then made. The connection of the polymer layer with the synthetic felt fabric is carried out only due to mechanical adhesion, which does not always provide sufficient strength

T" of such a connection; as a result, it is possible for the inner film shell to detach from the reinforcing layer, both in the process of manufacturing the pipeline coating and during its operation, and therefore - a decrease in the quality of the coating as a whole. 25 Disclosure of the invention

GF) The basis of this invention was the task of creating a coating of the inner surface of the pipeline, the inner shell of which would have such a composition that would significantly increase the quality of the coating, the development of a method of applying the specified coating to the inner surface of the pipeline, according to which the aforementioned coating would be applied in such a way, which would eliminate the turbulent change in the flow of the medium transported by the pipeline, 60 reduce the energy consumption for its transportation and increase the service life of the coating, the creation of a two-layer blank of the specified coating and the development of a method of obtaining this blank, according to which the blank would have a high adhesive strength of the connection of the inner film shell and reinforcing layer.

This is achieved by the fact that in the coating of the inner surface of the pipeline, which contains two coaxially located tubular film shells based on thermoplastic polymer material, one of which is the outer one, adjacent to the inner surface of the pipeline, and the other is the inner one, separated from it by a coaxial main reinforcing layer , impregnated with a proven polymer binder, according to the invention, the inner tubular film shell is formed by a multi-component homogeneous system containing at least one polymer selected from the group of thermoplastic polymers having a relative elongation of at least 20095 and a melting temperature of at least 100"C, and a structural modifier of the selected polymer, while the inner tubular film shell together with the main reinforcing layer are made open at least in one place along the axis of the coating, their open edges are hermetically connected to each other, and this shell forms a monolithic structure with the main reinforcing layer.

When using a 7/0 thermoplastic polymer with a relative elongation of less than 20095 in a multi-component homogeneous system forming an inner film shell, the specified inner shell will be quite stiff, which complicates the coating process described below. In the case of using a thermoplastic polymer with a melting point below 100"C, there is a danger of breaking the tightness of the inner film shell when a hot coolant, for example, saturated water vapor, is fed into its cavity.

The group of thermoplastic polymers with a relative elongation of at least 20095 and a melting point of at least 1007C may contain low-density polyethylene, ultra-high molecular weight polyethylene, polypropylene, a copolymer of propylene with vinyl acetate, polyvinyl chloride, and thermoplastic polyurethane, and the structural modifier of the selected polymer is a polyorganosiloxane. selected from the group consisting of polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane.

Due to high heat resistance and low intermolecular interaction, polyorganosiloxanes do not form significant agglomerates in 2o thermoplastic polymer and are evenly distributed in the free volume, increasing the mobility of the structural elements of this thermoplastic polymer and contributing to denser and more ordered packing of macrochains. Such changes in the structure of the thermoplastic polymer lead to an increase in its resistance to abrasive wear and an increase in adhesion to other materials, in particular to synthetic reinforcing materials. with

The inner tubular film shell can be formed by a multi-component homogeneous system containing one polymer or a mixture of two polymers, selected from the specified group of thermoplastic polymers in i) the amount of 99.3-99.7 mass. 96 in relation to the total mass of the inner shell, and polyorganosiloxane in the amount of 0.3-0.7 mass. 95 in relation to the total mass of the inner shell.

When the content in a multi-component homogeneous system of one or a mixture of two thermoplastic polymers per gram is less than 99% by weight. 95, and polyorganosiloxane - in the amount of more than 0.795, the physical and mechanical properties of the thermoplastic polymer or a mixture of two thermoplastic polymers deteriorate. When the content of thermoplastic polymer or a mixture of two thermoplastic polymers in the amount of more than 99.7 mass. Ov, and c polyorganosiloxane - less than O, Zmas. 95, no effect of structure modification was observed, which would reveal an improvement in the properties of the thermoplastic polymer(s). me)

It is advisable to use low-density polyethylene as the selected thermoplastic polymer, and polymethylsiloxane as the polyorganosiloxane.

Ultrahigh molecular weight polyethylene can be used as the selected thermoplastic polymer, and polymethylsiloxane as the polyorganosiloxane.

Polypropylene can also be used as the selected thermoplastic polymer, and polyphenylsiloxane as "Ppolyorganosiloxane". with c As the selected thermoplastic polymer, you can also use a copolymer of propylene with vinyl acetate, and polymethylphenylsiloxane as a polyorganosiloxane. ;" Polyvinyl chloride can be used as the selected thermoplastic polymer, and polyethylphenylsiloxane as a polyorganosiloxane.

Thermoplastic polyurethane can be used as the selected thermoplastic polymer, and polymethylphenylsiloxane as the polyorganosiloxane.

In addition, as a mixture of two selected thermoplastic polymers, you can use a mixture of low-density polyethylene in the amount of 5-95 mass. 9o and polypropylene in the amount of 4.3-94.7 mass. 96 in relation to 2) to the mass of the inner shell, and use polyphenylsiloxane as polyorganosiloxane.

The specified ratio of components makes it possible to obtain a multi-component homogeneous system with properties different from the properties of thermoplastic polymers included in its composition, which has increased strength while maintaining sufficient elasticity. When the content in the mixture is less than 5 mass. 95 low-density polyethylene, and polypropylene - more than 94.7 mass. 95, a multi-component homogeneous system has the properties of modified polypropylene, when the mixture contains low-density polyethylene in the amount of more than UBmass. 95, and polypropylene - in an amount less than 4, Lubricant. 95 multicomponent homogeneous system has the properties of modified polyethylene.

F) As a mixture of two selected thermoplastic polymers, it is advisable to use a mixture of ultra-high molecular weight polyethylene in the amount of 5-95 mass. 906 and copolymer of propylene with vinyl acetate in the amount of 4.3-94.7 mass. because in relation to the mass of the inner shell, and as a polyorganosiloxane, use boron polymethylsiloxane.

The specified ratio of components makes it possible to obtain a multi-component homogeneous system with properties different from the properties of thermoplastic polymers included in its composition: increased chemical resistance in combination with high strength and sufficient elasticity. When the content in the system is less than 5 mass. to ultrahigh molecular weight polyethylene and more than 94.7 mass. 95 copolymer of propylene with vinyl acetate, this 65 system has the properties of a modified copolymer of propylene with vinyl acetate; with a content in the system of more than 95 mass. 906 ultrahigh molecular weight polyethylene and less than 4,Zmas. 96 copolymer of propylene with vinyl acetate, this system has the properties of modified ultrahigh molecular weight polyethylene.

As a mixture of two selected thermoplastic polymers, it is desirable to use a mixture of polyvinyl chloride in the amount of 5-95 mass. In and thermoplastic polyurethane in the amount of 4.3-94.7 mass. 90 in relation to the mass of the inner shell, and polymethylphenylsiloxane or polyethylphenylsiloxane were used as polyorganosiloxane.

The specified ratio of components makes it possible to obtain a multi-component system with properties different from the properties of thermoplastic polymers included in its composition: high resistance to abrasive wear in combination with increased adhesion to other materials, in particular to synthetic reinforcing materials, and sufficient plasticity. When the content in the system is less than 5 mass. 96 of thermoplastic polyurethane and more than 94.7 mass. 95 polyvinyl chloride, this system detects the properties of modified polyvinyl chloride; and with a content of more than 9U5 mass. 96 of thermoplastic polyurethane and less than 4,Zmas. 95 polyvinyl chloride - properties of modified thermoplastic polyurethane.

At least one additional reinforcing layer may be provided in the coating, coaxially /5 located between the outer tubular film shell and the main reinforcing layer.

It is reasonable to make the main reinforcing layer from synthetic non-woven fibrous material.

The open edges of the inner tubular film shell together with the main reinforcing layer can be hermetically joined in a joint or in an overlap.

This is also achieved by the fact that in the method of applying the specified coating to the inner surface of the pipeline, which consists in the fact that tubular film shells based on thermoplastic polymer material are coaxially placed outside the pipeline, one of which is the outer one, designed to adhere to the inner surface of the pipeline, and the second one is internal, separated from it by the main reinforcing layer, impregnated with the last thermosetting polymer binder and a three-layer coating blank is obtained, which is introduced into the pipeline, then the coolant is fed under pressure into the cavity of the inner shell with subsequent heat treatment and curing of the binder, according to the invention , the main reinforcing layer is connected to the inner film shell by connecting the surfaces of the main reinforcing layer and i) the inner film shell formed from a film web obtained from a multi-component homogeneous system by mixing at least one polymer in the melt , selected from the group of thermoplastic polymers having a relative elongation of at least 20095 and a melting point of at least 1007С, and "from the structural modifier of the selected polymer, and by the subsequent hermetic connection of the side edges of the film web together with the main reinforcing layer connected to it between themselves, obtaining a two-layer coating blank from a coaxially located and interconnected reinforcing layer and an inner tubular film shell, and the already obtained two-layer blank is placed coaxially with respect to the outer tubular film shell. Me

The group of thermoplastic polymers with a relative elongation of at least 20095 and a melting point of at least 100"C may contain low-density polyethylene, ultra-high molecular weight polyethylene, polypropylene, a copolymer of propylene with vinyl acetate, polyvinyl chloride, and thermoplastic polyurethane, and the structural modifier of the selected polymer is polyorganosiloxane. , selected from the group consisting of polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane.

The inner tubular film shell can be obtained from a multi-component homogeneous system with c by mixing in the melt one polymer or a mixture of two polymers selected from the specified group of thermoplastic polymers in the amount of 99.3-99.7 mass. 95 in relation to the total mass of the inner shell, and from polyorganosiloxane in the amount of 0.3-0.7 mass. 95 in relation to the total mass of the inner shell.

It is advisable to use low-density polyethylene as the selected thermoplastic polymer, and

Polyorganosiloxane qualities - polymethylsiloxane. c Ultrahigh molecular weight polyethylene can be used as the selected thermoplastic polymer, and polymethylsiloxane as the polyorganosiloxane. and, Polypropylene can also be used as the chosen thermoplastic polymer, and polyphenylsiloxane as 2) polyorganosiloxane.

A copolymer of propylene with vinyl acetate can be used as the selected thermoplastic polymer, and polymethylphenylsiloxane as a polyorganosiloxane. Polyvinyl chloride can be used as the selected thermoplastic polymer, and polyethylphenylsiloxane as the polyorganosiloxane.

Thermoplastic polyurethane can also be used as the selected thermoplastic polymer, and polymethylphenylsiloxane as a polyorganosiloxane.

A mixture of low-density polyethylene can be used as a mixture of two selected thermoplastic polymers

F) density in the amount of 5-95 mass. 95 and polypropylene in the amount of 4.3-94.7 mass. 96 in relation to the mass of the inner shell, and as a polyorganosiloxane - polyphenylsiloxane.

In addition, as a mixture of two selected thermoplastic polymers, you can use a mixture of ultra-high molecular weight polyethylene in the amount of 5-95 mass. 7o and copolymer of propylene with vinyl acetate in the amount of 4.3-94.7 mass. 90 in relation to the mass of the inner shell, and as a polyorganosiloxane - polymethylsiloxane.

As a mixture of two selected thermoplastic polymers, it is advisable to use a mixture of polyvinyl chloride in the amount of 5-95 mass. In and thermoplastic polyurethane in the amount of 4.3-94.7 mass. 90 in relation to the mass 65 of the inner shell, and as a polyorganosiloxane - polymethylphenylsiloxane or polyethylphenylsiloxane.

It is desirable to place at least one additional reinforcing layer between the outer tubular film shell and the main reinforcing layer.

It is reasonable to make the main reinforcing layer from a synthetic fibrous material.

The side edges of the film sheet together with the main reinforcing layer connected to it is quite reasonable Hermetically connected in a joint or in an overlap.

In addition, this is also achieved by the fact that in the two-layer preparation of the indicated coating of the inner surface of the pipeline, which contains a reinforcing layer, connected to the inner tubular film shell of the coating based on thermoplastic polymer film material, according to the invention, the inner tubular film shell is formed by a multi-component homogeneous system containing at least one polymer 70 selected from the group of thermoplastic polymers having a relative elongation of at least 20095 and a melting point of at least 100"С, and a structural modifier of the selected polymer, while the inner tubular film shell together with the connected reinforcing layer made open at least in one place along the axis of the workpiece, and their open edges are hermetically connected to each other, creating a coaxially located and interconnected reinforcing layer and an inner tubular film shell.

The group of thermoplastic polymers, having a relative elongation of at least 20095 and a melting point of at least 1007C, may contain low-density polyethylene, ultra-high molecular weight polyethylene, polypropylene, a copolymer of propylene with vinyl acetate, polyvinyl chloride and thermoplastic polyurethane, and the structural modifier of the selected polymer is a polyorganosiloxane, selected from the group containing polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane.

The inner tubular film shell can be formed by a multi-component homogeneous system containing one polymer or a mixture of two polymers selected from the specified group of thermoplastic polymers in the amount of 99.3-99.7 mass. 95 in relation to the total mass of the inner shell, and polyorganosiloxane in the amount of 0.3-0.7 mass. 95 in relation to the total mass of the inner shell.

It is advisable to use low-density polyethylene as the selected thermoplastic polymer, and polymethylsiloxane as a polyorganosiloxane.

Ultrahigh molecular weight polyethylene can be used as the chosen thermoplastic polymer, and i) polymethylsiloxane as a polyorganosiloxane.

Polypropylene can also be used as the selected thermoplastic polymer, and polyphenylsiloxane as the polyorganosiloxane. "g z o As the selected thermoplastic polymer, you can also use a copolymer of propylene with vinyl acetate, and as a polyorganosiloxane - polymethylphenylsiloxane. at

Polyvinyl chloride can be used as the selected thermoplastic polymer, and polyethylphenylsiloxane as a polyorganosiloxane.

Thermoplastic polyurethane can also be used as the selected thermoplastic polymer, and polymethylphenylsiloxane is used as a polyorganosiloxane. yu

In addition, as a mixture of two selected thermoplastic polymers, you can use a mixture of low-density polyethylene in the amount of 5-95 mass. 9o and polypropylene in the amount of 4.3-94.7 mass. 96 in relation to the mass of the inner shell, and polyphenylsiloxane should be used as polyorganosiloxane.

As a mixture of two selected thermoplastic polymers, it is advisable to use a mixture of high-molecular polyethylene in the amount of 5-U5 mass. 95 I copolymer of propylene with vinyl acetate in the amount of 4.3-94.7 mass. with respect to the mass of the inner shell, and polymethylsiloxane was used as a polyorganosiloxane.

As a mixture of two selected thermoplastic polymers, it is desirable to use a mixture of polyvinyl chloride in the amount of 5-95 mass. In and thermoplastic polyurethane in the amount of 4.3-94.7 mass. 90 in relation to the mass of the inner shell, and polymethylphenylsiloxane or polyethylphenylsiloxane were used as polyorganosiloxane. c The reinforcing layer should be made of synthetic non-woven fibrous material.

The open edges of the inner tubular film shell, connected to the reinforcing layer, can be hermetically connected to each other in a joint or overlap along the axis of the two-layer coating blank. 2) This is also achieved by the fact that in the method of obtaining the specified two-layer blank of the specified coating

The inner surface of the pipeline, which consists in the fact that the inner tubular film shell of the coating based on thermoplastic polymer material is connected to the reinforcing layer, according to the invention, and the inner tubular film shell is formed from a film sheet obtained from a multi-component homogeneous system using mixing in the melt of at least one polymer selected from the group of thermoplastic polymers having a relative elongation of at least 20095 and a melting temperature of at least two L100"С, its structural modifier of the selected polymer, connecting the surfaces of this film sheet and the reinforcing layer, then hermetically with connect the side edges of the film sheet together with the reinforcing layer (F) connected to it, to each other, thus obtaining a two-layer coating blank from the coaxially located and interconnected reinforcing layer and the inner tubular film shell.

The group of thermoplastic polymers, having a relative elongation of at least 20095 and a melting point of at least 100"7C, may contain low-density polyethylene, ultra-high molecular weight polyethylene, polypropylene, a copolymer of propylene with vinyl acetate, polyvinyl chloride, and thermoplastic polyurethane, and the structural modifier of the selected polymer is polyorganosiloxane. , selected from the group consisting of polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane.

The inner tubular film shell can be obtained from a multi-component homogeneous system b5 By mixing in a melt one polymer or a mixture of two polymers selected from the specified group of thermoplastic polymers in the amount of 99.3-99.7 mass. 95 in relation to the total mass of the inner shell, and polyorganosiloxane in the amount of 0.3-0.7 mass. 95 in relation to the total mass of the inner shell.

It is advisable to use low-density polyethylene as the selected thermoplastic polymer, and polymethylsiloxane as the polyorganosiloxane.

Ultrahigh molecular weight polyethylene can be used as the chosen thermoplastic polymer, and polymethylsiloxane as the polyorganosiloxane.

Polypropylene can also be used as the selected thermoplastic polymer, and polyphenylsiloxane as the polyorganosiloxane.

A copolymer of propylene with vinyl acetate can be used as the selected thermoplastic polymer, and polymethylphenylsiloxane is used as a polyorganosiloxane.

Polyvinyl chloride can be used as the chosen thermoplastic polymer, and polyethylphenylsiloxane as the polyorganosiloxane.

Thermoplastic polyurethane can also be used as the chosen thermoplastic polymer, and polymethylphenylsiloxane as the polyorganosiloxane.

As a mixture of two selected thermoplastic polymers, you can use a mixture of low-density polyethylene in the amount of 5-95 mass. 95 and polypropylene in the amount of 4.3-94.7 mass. 96 in relation to the mass of the inner shell, and as a polyorganosiloxane - polyphenylsiloxane.

As a mixture of two selected thermoplastic polymers, it is advisable to use a mixture of ultra-high molecular weight polyethylene in the amount of 5-95% by weight and copolymer of propylene with vinyl acetate in the amount of 4.3-94% by weight. to in relation to the mass of the inner shell, and as a polyorganosiloxane - polymethylsiloxane.

As a mixture of two selected thermoplastic polymers, it is reasonable to use a mixture of polyvinyl chloride in the amount of 5-95 mass. In and thermoplastic polyurethane in the amount of 4.3-94.7 mass. 90 in relation to the mass of the inner shell, and polymethylphenylsiloxane or polyethylphenylsiloxane as polyorganosiloxane.

It is reasonable to make the reinforcing layer from synthetic fibrous material. with

It is quite reasonable to hermetically connect the side edges of the film fabric connected to the reinforcing layer in a butt or overlap. and)

The justification of all limits both in the method of applying the specified coating, and in the two-layer blank of this coating and the method of obtaining this blank is the same as in the patentable coating.

The patented coating has a number of advantages: "E with high strength and tightness during operation; the complete absence of defects (folds, assemblies, and the like) on the inner surface formed by the inner film shell, as well as the absence of areas of detachment of the latter from the coating, which ensures uniform movement of the liquid transported through the pipeline without energy loss; resistance to abrasive wear; (22) resistance to the action of chemically active media and water, which significantly increases the service life and reliability of the coating and makes it possible to use it in pipelines of various purposes.

The claimed method of applying the coating makes it possible to apply a coating with the above-described advantages thanks to the use of a two-layer coating blank consisting of an interconnected inner film shell and the main reinforcing layer, which makes it possible to facilitate the technology of "assembly of a multilayer coating blank and exclude skewing, twisting, pulling out of the inner film shell during transportation of the specified multi-layer coating blank inside the pipeline. . The two-layer coating blank, which is patented, according to the invention, is characterized by high adhesion and? of the inner film shell of the coating to the main reinforcing layer, with high strength and tightness, which makes it possible to use it to obtain a coating that has the above-mentioned advantages, according to the method proposed in this invention. c The method of obtaining a two-layer blank, which is claimed, provides the possibility of obtaining such a blank with the above-mentioned advantages. and, Brief description of the drawings, etc. Next, the invention is explained by a description of specific examples of its implementation and the accompanying drawings, on

WHICH: Fig. 1 shows the patentable coating applied by the method according to the invention to the inner surface of the pipeline (axonometry); Fig. 2 is the same as Fig. 1 (transverse section, enlarged scale); Fig. 3 - section A in Fig. 2 on an enlarged scale; Fig. 4 - another version of the same as in Fig. 3; two fig. 5 - another version of the same as in fig. 3; Fig. 6 is another version of the patentable coating applied by the method according to the invention

F) (transverse dissection); ka fig. 7 - section B in fig. 6 on an enlarged scale; Fig. 8 is another version of the patentable coating applied by the method according to the invention (cross section); Fig. 9 - one of the variants of the patentable coating applied by the method according to the invention (cross-section); Fig. 10 - one of the variants of the two-layer blank of the patentable coating according to Figs. 1 and 2, obtained by the method according to the invention (transverse section); 65, Fig. 11 - another version of the two-layer blank of the patentable coating according to Fig. b, obtained by the method according to the invention (cross-section).

The best options for implementing the invention

The coating of the inner surface of the pipeline 71, which is patented, (Fig. 1 and 2) contains two coaxially located tubular film shells 2 and Z based on a thermoplastic polymer material, one of which - the outer 2 is adjacent to the inner surface of the pipeline, and the other - the inner Z is separated from it with the coaxial main 4 and additional 5 reinforcing layers impregnated with a proven polymer binder. The inner tubular film shell C is formed by a multi-component homogeneous system containing at least one polymer selected from the group of thermoplastic polymers having a relative elongation of at least 20095 and a melting temperature of at least 1007C, and a structural modifier of the selected polymer, while the inner tubular film shell C together with the main reinforcing layer 4 are made open at least in one place along the axis of the coating, their open edges 6 and 7 are respectively hermetically connected to each other and this shell C forms a monolithic structure with the main reinforcing layer 4.

The group of thermoplastic polymers with a relative elongation of at least 20095 and a melting point of at least 100"C includes low-density polyethylene, ultra-high molecular weight polyethylene, polypropylene, 7/5 bopolymer of propylene with vinyl acetate, polyvinyl chloride, and thermoplastic polyurethane, and the structural modifier of the selected polymer is a polyorganosiloxane selected from the group consisting of polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane.

The inner tubular film shell C is formed by a multi-component homogeneous system containing one polymer or a mixture of two polymers, selected from the specified group of thermoplastic polymers in the amount of 99.3-99.7 mass. 96 in relation to the total mass of the inner shell, and polyorganosiloxane in the amount of 0.3-0.7 mass. 95 in relation to the total mass of the inner shell 3.

Low-density polyethylene can be used as the selected thermoplastic polymer, and polymethylsiloxane as the polyorganosiloxane.

As the selected thermoplastic polymer, you can also use high molecular weight polyethylene, and polymethylsiloxane as the polyorganosiloxane.

Polypropylene can be used as the selected thermoplastic polymer, and polyphenylsiloxane as i) polyorganosiloxane.

A copolymer of propylene with vinyl acetate can also be used as the selected thermoplastic polymer, and polymethylphenylsiloxane as a polyorganosiloxane. Polyvinyl chloride can be used as the chosen thermoplastic polymer, and polyethylphenylsiloxane as the polyorganosiloxane, as well as thermoplastic polyurethane as the chosen polymer, and polymethylphenylsiloxane as the polyorganosiloxane. with

In addition, as a mixture of two selected thermoplastic polymers, you can use a mixture of low-density polyethylene in the amount of 5-U5 mass. 906 and polypropylene in the amount of 4.3-94.7 mass. 96 in relation to Me)

The weight of the inner shell is 3, and the polyorganosiloxane is polyphenylsiloxane. yu

As a mixture of two selected thermoplastic polymers, you can use a mixture of ultrahigh molecular weight polyethylene in the amount of 5-95 mass. 90 and polypropylene copolymer with vinyl acetate in the amount of 4.3-94.7 mass. 905 in relation to the mass of the inner shell 3, and as a polyorganosiloxane - polymethylsiloxane. "

As a mixture of two selected thermoplastic polymers, you can also use a mixture of polyvinyl chloride in the amount of 5-U5 mass. 90 and thermoplastic polyurethane in the amount of 4.3-94,/7 mass. 90 in relation to the mass of the inner shell Z, and as a polyorganosiloxane - polymethylphenylsiloxane or ; » polyethylphenylsiloxane.

The outer shell 2 can be made of polyethylene or a multilayer polyethylene-polyamide film.

The main reinforcing layer 4 is made of synthetic non-woven fibrous material, for example, from synthetic felt based on polyester and/or polypropylene fibers.

Additional reinforcing layer 5, made of synthetic felt based on polyester and/or polypropylene fibers, glass fabric, glass mat, combined glass material, mesh made of thermoplastic fibers, mesh made of carbon fibers.

As a polymer binder, polyester, epoxy, epoxy polyester binder, polyester o binder, thickened with aerosol and/or magnesium oxide were used. Opened edges 6 and 7 of the inner tubular film shell C together with the main reinforcing layer 4 are hermetically connected in a joint, as shown in Fig. 1, 2 and 3. The area of connection (stitching or welding) of the edges 6 (Fig. 3) and 7 is hermetically closed, for example welded along the axis of the cover (Fig. 1) with a tape 8 (Fig. 3) made of a material identical to the material of the inner film shell 3.

Figs. 4 and 5 show two more options for performing a hermetic connection of the open edges 6 and 7 of the inner

Ф) tubular film shell C together with the main reinforcing layer 4 in the joint. ka Yes, in Fig. 4 edges 6 and 7 are closed by a gasket 9 stretched along the axis of the coating, for example, made of fluoroplastic, synthetic fabric, fiberglass, and it is closed, in turn, by tape 8. In Fig. 5, the connection area (stitching or welding) of the edges b and 7 is hermetically closed, namely welded along the axis of the cover with a shaped tape 10 with a T-shaped cross section made of the material identical to the material of the inner film shell 3.

The open edges 6 and 7 of the inner tubular film shell C together with the main reinforcing layer 4 can be hermetically joined in an overlap, as shown in Fig. b and 7. For this, the side edges 6 (Fig. 7) and 7 6b5 are sewn or welded overlapping along the axis of the coating and the connection area (stitching or welding) is closed, that is, welded, with a tape 8 of a material identical to the material of the inner film shell 3.

Fig. 8 shows a variant of the patentable coating, which has another additional reinforcing layer 11, located between the additional reinforcing layer 5 and the outer shell 2 and is made of synthetic felt based on polyester and/or polypropylene fibers, glass fabric, glass mat, combined glass material, thermoplastic fiber mesh or carbon fiber mesh.

Fig. 9 shows a variant of the patented coating, which, in addition to two additional reinforcing layers 5 and 11, has one additional reinforcing layer 12, located between layer 11 and shell 2 and made of synthetic felt based on polyester and/or polypropylene fibers, glass fabric, glass mat, combined glass material, thermoplastic fiber mesh or carbon fiber mesh. 70 According to the patentable invention, the method of coating the inner surface of the pipeline consists in the fact that outside the pipeline 1 (fig. 1 and 2) coaxially placed tubular film shells 2 and C based on a thermoplastic polymer material, one of which is the outer 2 designed to adhere to the inner surface of the pipeline 1, and the second - the inner Z is separated from it by the main 4 and additional 5 reinforcing layers, the latter are impregnated with a thermosetting polymer binder and a multilayer coating blank is obtained, which is introduced into the pipeline 1, then fed under the pressure of the coolant into the cavity of the inner shell C with subsequent heat treatment | statement of the conjunction. Before assembling the non-impregnated multilayer blank, the sheet of material forming the main reinforcing layer 4 is connected to the film sheet forming the inner film shell C and obtained from a multi-component homogeneous system by mixing in the melt at least one polymer selected from the group of 2o thermoplastic polymers , having a relative elongation of at least 20075 and a melting point of at least 1007C, and a structural modifier of the selected polymer, then hermetically connect the side edges 6 and 7 of the film web together with the main reinforcing layer 4 connected to it to each other, obtaining a two-layer blank the coating shown in Fig. 10, with coaxially located and interconnected reinforcing layer 4 and the inner tubular film shell 3, and the already obtained two-layer blank together with the additional reinforcing layer 5 are coaxially placed with respect to the outer tubular film shell 2.

The group of thermoplastic polymers, having a relative elongation of at least 10095 and a melting point i) not lower than 1007C, includes low-density polyethylene, ultrahigh molecular weight polyethylene, polypropylene, a copolymer of propylene with vinyl acetate, polyvinyl chloride and thermoplastic polyurethane, and the structural modifier of the selected polymer is a polyorganosiloxane, selected from the group containing "Mr

Polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane.

The inner tubular film shell Z is obtained from a multi-component homogeneous system by mixing in the melt one polymer or a mixture of two polymers selected from the specified group of thermoplastic polymers in the amount of 99.3-99.7 mass. 95 in relation to the total mass of the inner shell, and polyorganosiloxane in the amount of 0.3-0.7 mass. 95 in relation to the total mass of the inner shell 3. Me)

Low-density polyethylene can be used as the selected thermoplastic polymer, and polymethylsiloxane can be used as a polyorganosiloxane.

Ultrahigh molecular weight polyethylene can also be used as the selected thermoplastic polymer, and polymethylsiloxane as the polyorganosiloxane.

Polypropylene can be used as the selected thermoplastic polymer, and polyphenylsiloxane as "Ppolyorganosiloxane". with c As the selected thermoplastic polymer, you can also use a copolymer of propylene with vinyl acetate, and as a polyorganosiloxane - polymethylphenylsiloxane. ;" Polyvinyl chloride can be used as the selected thermoplastic polymer, and polyethylphenylsiloxane as the polyorganoschusan, and thermoplastic polyurethane as the selected polymer, and polymethylphenylsiloxane as the polyorganosiloxane. c In addition, as a mixture of two selected thermoplastic polymers, you can use a mixture of low-density polyethylene in the amount of 5-95 mass. 9o and polypropylene in the amount of 4.3-94.7 mass. 96 in relation to the mass of the inner shell 3, and as a polyorganosiloxane - polyphenylsiloxane. 2) As a mixture of two selected thermoplastic polymers, you can use a mixture of high-molecular polyethylene 5r in the amount of 5-95 mass. 9o I copolymer of propylene with vinyl acetate in the amount of 4.3-94.7 mass. o to in relation to the mass of the inner shell 3, and as a polyorganosiloxane - polymethylsiaoxane. As a mixture of two selected thermoplastic polymers, you can use a mixture of polyvinyl chloride in the amount of 5-95 mass. In and thermoplastic polyurethane in the amount of 4.3-94.7 mass. 90 in relation to the mass of the inner shell 3, and as polyorganosiloxane - polymethylphenylsiloxane or polyethylphenylsiloxane.

The outer shell 2 is made of polyethylene or a multilayer polyethylene-polyamide film.

The main reinforcing layer 4 is made of synthetic fibrous material, for example, synthetic

F) felt based on polyester and/or polypropylene fibers. ka Additional reinforcing layer 5 is made of synthetic felt based on polyester and/or polypropylene fibers, glass fabric, glass mat, combined glass material, mesh made of thermoplastic boron Fibers, mesh made of carbon fibers.

As a polymer binder, polyester, epoxy, epoxy polyester binder, polyester binder thickened with air foam and/or magnesium oxide are used.

According to one variant of the patentable method, the side edges 6 and 7 of the film sheet together with the main reinforcing layer 4 connected to it are hermetically joined in a joint, as shown in Fig. 1-5, and according to another 65 variant of execution of the patentable method, are hermetically connected in an overlap, as shown in fig.b6 and 7.

Figs. 8 and 9 show variants of the method according to the invention, according to which one additional reinforcing layer 11 according to Fig. 8 and two additional reinforcing layers 11 and 12 according to Fig. 9 are respectively placed between the additional reinforcing layer 5 and the outer shell 2 , while layers 11 and 12 are also made as in the patentable coating described above.

Although the variants of the patented coating and the method of its application have been described above, according to the invention, which have only one, two and three additional reinforcing layers, as well as the inner shell together with the main reinforcing layer connected to it, are made open only in one place along the axis of the coating, this does not limit our rights, which are formulated in the claims.

Below will be described the two-layer blank, which is patented, the above-described coating and the method of its production, 70 according to the invention.

The two-layer patentable blank according to Fig. 10 and 11 of the above-mentioned coating according to Fig. 1-9 of the inner surface of the pipeline contains a reinforcing layer 4 connected to the inner tubular film shell of a coating based on thermoplastic polymer film material. Inner tubular film shell

C is formed by a multicomponent homogeneous system containing at least one polymer selected from group 7/5 thermoplastic polymers having a relative elongation of at least 20095 and a melting point of at least 1007, and a structural modifier of the selected polymer, while the inner tubular film shell C together with the reinforcing layer 4 connected to it is made open at least in one place along the axis of the blanks and their open edges 6 and 7 are hermetically connected to each other, creating a coaxially located and interconnected reinforcing layer 4 and the inner tubular film shell 3.

The group of thermoplastic polymers having a relative elongation of at least 20095 and a melting point of at least 1007C includes low-density polyethylene, ultrahigh-molecular-weight polyethylene, polypropylene, a copolymer of propylene with vinyl acetate, polyvinyl chloride, and thermoplastic polyurethane, and the structural modifier of the selected polymer is a polyorganosiloxane selected from the group , containing polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane. high school

The inner tubular film shell C is formed by a multi-component homogeneous system containing one polymer or a mixture of two polymers, selected from the specified group of thermoplastic polymers in the amount of i) 99.3-99.7 mass. 96 in relation to the total mass of the inner shell, and polyorganosiloxane in the amount of 0.3-0.7 mass. 95 in relation to the total mass of the inner shell 3.

Low-density polyethylene can be used as the chosen thermoplastic polymer, and polymethylsiloxane can be used as a polyorganosiloxane.

Ultrahigh molecular weight polyethylene can also be used as the selected thermoplastic polymer, and polymethylsiloxane as the polyorganosiloxane. co

Polypropylene can be used as the selected thermoplastic polymer, and polyphenylsiloxane as the polyorganosiloxane. me)

A copolymer of propylene and vinyl acetate can be used as the selected thermoplastic polymer, and polymethylphenylsiloxane is used as a polyorganosiloxane.

Polyvinyl chloride can be used as the selected thermoplastic polymer, and polyethylphenylsiloxane as the polyorganosiloxane, and thermoplastic polyurethane as the selected thermoplastic polymer, and polymethylphenylsiloxane as the polyorganosiloxane. "

In addition, as a mixture of two selected thermoplastic polymers, you can use a mixture of low-density polyethylene in the amount of 5-95 mass. 9o and polypropylene in the amount of 4.3-94.7 mass. 96 in relation to the mass of the inner shell, and as a polyorganosiloxane - polyphenylsiloxane. ;" As a mixture of two selected thermoplastic polymers, you can use a mixture of ultrahigh molecular weight polyethylene in the amount of 5-95 mass. 90 and copolymer of propylene with vinyl acetate in the amount of 4.3-94 7mabs. to in relation to the mass of the inner shell, and as a polyorganosiloxane - polymethylsiloxane. c As a mixture of two selected thermoplastic polymers, you can also use a mixture of polyvinyl chloride in the amount of 5-95 mass. 90 and thermoplastic polyurethane in the amount of 4.3-94,/7 mass. 90 in relation to the mass of the inner shell, and as a polyorganosiloxane - polymethylphenylsiloxane or 2) polyethylphenylsiloxane.

Reinforcing layer 5, made of synthetic non-woven fibrous material, for example, of synthetic o felt based on polyester and/or polypropylene fibers. Opened edges b and 7 of the inner tubular film shell C, connected to the reinforcing layer 4, are hermetically connected to each other along the axis of the two-layer coating blank, as shown in Fig. 10 by means of stitching or butt welding and welding on the area stapling or welding on the side of the inner film shell From tape 8 of a material identical to the material of the inner film shell 3.

The open edges 6 and 7 of the inner tubular film shell 3, connected to the reinforcing layer 4, can

F) be hermetically connected to each other and in an overlap along the axis of the two-layer cover blank, as shown in Fig. 11, by means of stapling or lap welding and welding on the seam area or welding from the side of the inner shell of tape 8 of a material identical to of the material of the inner shell 3. In the patented method of obtaining a two-layer blank of the proposed coating of the inner surface of the pipeline, it consists in the fact that the inner tubular film shell C of the specified coating based on thermoplastic polymer material is connected to the reinforcing layer 4. The inner tubular film shell C are formed from a film web obtained from a multi-component homogeneous system by mixing in the melt at least one polymer selected from the group of thermoplastic polymers that have a relative elongation of at least 20095 and a melting temperature of at least 100"C, and a structural modifier of the selected polymer, with connect this film web with the material web, which forms the reinforcing layer 4, then the side edges 6 and 7 of the film sheet together with the reinforcing layer 4 connected to it are hermetically connected to each other, thus obtaining a two-layer coating blank from the coaxially located and interconnected reinforcing layer 4 and the inner tubular film shell 3.

The group of thermoplastic polymers having a relative elongation of at least 20095 and a melting point of at least 1007C includes low-density polyethylene, ultra-high molecular weight polyethylene, polypropylene, a copolymer of propylene with vinyl acetate, polyvinyl chloride and thermoplastic polyurethane, and the structural modifier of the selected polymer is a polyorganosiloxane selected from the group , containing polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane. 70 The inner tubular film shell Z is obtained from a multi-component homogeneous system by mixing in the melt one polymer or a mixture of two polymers selected from the specified group of thermoplastic polymers in the amount of 99.3-99.7 mass. 95 in relation to the total mass of the inner shell, and polyorganosiloxane in the amount of 0.3-0.7 mass. 95 in relation to the total mass of the inner shell 3.

Low-density polyethylene can be used as the chosen thermoplastic polymer, and polymethylsiloxane can be used as 7/5 polyorganosiloxane.

Ultrahigh molecular weight polyethylene can also be used as the selected thermoplastic polymer, and polymethylsiloxane as the polyorganosiloxane.

Polypropylene can be used as the selected thermoplastic polymer, and polyphenylsiloxane as the polyorganosiloxane.

A copolymer of propylene with vinyl acetate can be used as the chosen thermoplastic polymer, and polymethylphenylsiloxane as a polyorganosiloxane.

Polyvinyl chloride can be used as the selected thermoplastic polymer, and polyethylphenylsiloxane as the polyorganosiloxane, and thermoplastic polyurethane as the selected polymer, and polymethylphenylsiloxane as the polyorganosiloxane. high school

In addition, as a mixture of two selected thermoplastic polymers, you can use a mixture of low-density polyethylene in the amount of 5-95 mass. 9Uo and polypropylene in the amount - 4.3-94,/7 mass. 905 in relation to the weight of the inner shell, and as a polyorganosiloxane - polyphenylsiloxane.

As a mixture of two selected thermoplastic polymers, you can use a mixture of ultrahigh molecular weight polyethylene in the amount of 5-95 mass. 90 and copolymer of propylene with vinyl acetate in the amount of 4.3-94 7mabs. " z to in relation to the mass of the inner shell, and as a polyorganosiloxane - polymethylsiloxane.

As a mixture of two selected thermoplastic polymers, you can use a mixture of polyvinyl chloride in the amount of 5-95 mass. In and thermoplastic polyurethane in the amount of 4.3-94.7 mass. 90 in relation to the mass of the inner shell, and as a polyorganosiloxane - polymethylphenylsiloxane or polyethylphenylsiloxane.

The reinforcing layer 4 is made of synthetic fibrous material, for example, synthetic felt based on polyester and/or polypropylene fibers. yu

The side edges 6 and 7 of the film web connected to the reinforcing layer 4 are hermetically connected to each other in a joint, as shown in Fig. 10, by means of stitching or welding in the joint and welding on the area of stitching or welding from the side of the inner film shell C tape 8 from a material identical to the material of the inner film shell 3.

The side edges 6 and 7 of the film web, connected to the reinforcing layer 4, are hermetically connected to each other pt") with an overlap, as shown in Fig. 11, by means of stitching or welding in an overlap and welding on the area of stitching or welding from the inner side film cover From tape 8 of material identical to the material;" inner film shell 3.

Although the above described variants of the two-layer blank of the patentable coating according to the invention and the method of obtaining this blank of the patent, in which the execution of the inner shell together with the reinforcing layer connected to it is opened in one place along the axis of the billet, this does not limit our rights, which are formulated in the claims. and, Below will be described in detail specific examples of the performance of the patentable coating applied by the method according to the invention, which will also describe in detail the two-layer blank, the patentable coating, obtained by the method according to the invention. 1 Example 1. i" Outside the pipeline 1 (Figs. 1 and 2), an outer tubular film shell 2 made of a thermoplastic polymer material, namely polyethylene, and an inner tubular film shell 3, around which the main reinforcing layer 4 is placed, are coaxially placed, that it turns out to be placed between the Outer 2 and the inner Z film covers and forms a two-layer coating blank with the latter.

For the manufacture of the inner tubular shell Z of such a blank, a film sheet is used on (Ф, based on a thermoplastic polymer material, namely, a homogeneous system obtained by mixing in a melt of low-density polyethylene in the amount of 99.7 wt. 96 in relation to the total mass of the inner shell Z and of its structural modifier - polymethylsiloxane in the amount of O, Zws. 96 in relation to the total weight of the inner shell 3. The film web is connected by calendering to the web of the reinforcing layer 4 made of synthetic fibrous non-woven material, namely synthetic felt based on polyester fibers: the side edges b and 7 of the connected sheets are stitched together, the seam area on the side of the film is hermetically closed, that is, welded, with a tape 8 of the material identical to the material of the inner tubular shell 3, thus obtaining the above-mentioned two-layer coating blank (Fig. 10) 65 Between the outer tubular film shell 2 and the main reinforcing bar arom 4 coaxial place an additional reinforcing layer 5 made of fiberglass.

The main 4 and additional 5 reinforcing layers are impregnated with a binder based on unsaturated polyester resin.

The layered structure of the coating blank obtained in this way is introduced into the section being repaired (laid again) of the pipeline 1 through the well using special mechanisms and devices (not shown in the drawing). At the same time, there is no deformation, twisting, destruction of the inner film shell 3, due to the connection of the latter with the main reinforcing layer 4 in the two-layer blank, which is claimed, (Fig. 10) coating, made by the proposed method.

A heat carrier is fed into the cavity of the inner film shell C and the binder is solidified under the following regime: 70 heat carrier - saturated water vapor; coolant temperature - 1007; pressure 0.05Mpa; confirmation time - 2 hours.

As a result, a monolithic structure of the inner film shell C with the main reinforcing /5 layer 4 is formed, which leads to a significant increase in the quality of the proposed coating, by the method claimed, and therefore to an increase in the operational characteristics of the pipeline due to the high physical and mechanical characteristics of the coating, its water resistance and chemical resistance: destructive bending stress, MPa: 140-200; resistance to delamination, MPa: 8-12; water absorption, mass 90: 0.4-0.5; resistance to the action of 1095 NZO4 - no destruction of the proposed coating occurs during exposure for 1 month at a temperature of 20-2276.

Example 2. p. 29 The process is carried out similarly to example 1. Ge)

The coating materials are the same as in example 1, except for the material of the inner tubular film shell C and the additional reinforcing layer 5.

The inner film shell C is formed by a homogeneous system containing low-density polyethylene in the amount of 99.5 mass. 96 in relation to the total mass of the inner shell C and polymethylsiloxane in the amount of tons

Oh, 5 wt. 95 in relation to the total mass of the inner shell 3. IS o)

Additional reinforcing layer 5 is made of synthetic felt based on polyester fibers.

Between the additional reinforcing layer 5 (Fig. 8) and the outer film shell 2, the coaxial is placed with one additional reinforcing layer 11 made of synthetic felt based on polyester fibers. (Gee)

The mode of confirmation according to example 1, with the exception of the confirmation time, which is 3.5 hours. The same result as in example 1 was obtained. o

Example 3.

The process is carried out similarly to example 2.

Materials for the coating are used the same as in example 71, except for the material of the inner film shell Z and the additional reinforcing layer 5.

The inner film shell C is formed by a homogeneous system containing low-density polyethylene in the amount of 99.33 mass. 96 in relation to the total mass of the inner shell C and polymethylsiloxane in the amount: c" 0.7 mass. 95 in relation to the total mass of the inner shell 3.

The additional reinforcing layer 5 is formed by a mesh of carbon fibers.

Mode of confirmation according to example 2, except for the temperature of the coolant, which is 907C. The same result as in example 1 was obtained.

Example 4. (Se) The process is carried out similarly to example 1, except for the step of hermetically connecting the side edges 6 and 7 to the film fabric and synthetic non-woven material, which is carried out by welding the side edges 6 and 7 into a joint. (9) 50 Coating materials use the same as in example 71, except for the material of the inner film

And" shell of C and connective.

The inner film shell C is formed by a homogeneous system containing ultrahigh molecular weight polyethylene in the amount of 99.7 mass. 95 in relation to the total mass of the inner shell C and its structural modifier - polymethylsiloxane in the amount of O, Zmass. 90 in relation to the total mass 59 of the inner shell 3.

GF) Epoxy polyester binder is used for impregnation of reinforcing layers 4 and 5. 7 Mode of hardening of the binder according to example 3, except for the steam pressure, which is 0.07 MPa. The results are the same as in example 1.

Example 5. Because the process is carried out similarly to example 4.

The coating materials are the same as in example 4, except for the materials of the inner film shell C and the additional reinforcing layer 5.

The inner film shell C is formed by a homogeneous system containing ultrahigh molecular weight polyethylene in the amount of 99.5 mass. 96 in relation to the total mass of the inner shell C and because the structural modifier polymethylsiloxane in the amount of 0.5 mass. 906 in relation to the total mass of the inner shell 3.

The additional reinforcing layer 5 is formed by a mesh based on polyester fibers.

The curing mode according to example 4, except for the temperature of the heat carrier, which is 80"C, and the steam pressure, which is about 1MPa. The results are the same as in example 1.

Example 6.

The process is carried out similarly to example 4.

The coating materials are used the same as in example 4, except for the material of the inner film shell 3. 70 The inner film shell C is formed by a homogeneous system containing ultrahigh molecular weight polyethylene in the amount of 99% by weight. 96 in relation to the total mass of the inner shell C and polymethylsiloxane in the amount of 0.7 mass. 95 in relation to the total mass of the inner shell 3. There is no additional reinforcing layer 5. Before feeding the heat carrier into the cavity of the inner film shell C, air is supplied under a pressure of 0.01 Mla for 20 minutes, and then the heat carrier is fed and the determination of 7/5 b obtained according to example 1 is obtained. The same results as in example 1 are obtained.

Example 7.

The process is carried out similarly to example 1.

The coating materials are the same as in example 1, except for the materials of the inner film shell C and the main reinforcing layer 4.

The inner film shell C is formed by a homogeneous system containing polypropylene in the amount of 99.7 mass. to in relation to the total mass of the inner shell C and polyphenylsiloxane in the amount of O,Zmass. 95 in relation to the total mass of the inner shell 3.

The main reinforcing layer 4 is made of synthetic felt based on polypropylene fibers.

The mode of confirmation according to example 3, with the exception of the coolant temperature, which is 110"7C. The results are the same as in example 1.

Example 8. (8)

The process is carried out similarly to example 7, except for the step of hermetically connecting the side edges 6 and 7 of the connected sheets of film and reinforcing material, which is done by overlapping these edges (Fig. 7 and 11).

The coating materials are the same as in example 71, except for the materials of the inner film shell З and З of the additional reinforcing layer 5.

The inner film shell C is formed by a homogeneous system containing polypropylene in the amount of 99.5 mass. o to in relation to the total mass of the inner shell C and polyphenylsiloxane in the amount of O, b5 mass. 95 of the total mass of the inner shell 3.

Additional reinforcing layer 5 is made of synthetic felt based on polypropylene fibers. Me

The mode of confirmation is as in Example 7, except for the confirmation time, which is 5 hours. The results are the same as in Example 7.

Example 9.

The process is carried out similarly to example 7.

The coating materials are the same as in example 7, except for the material of the inner film shell 3.

The inner film shell C is formed by a homogeneous system containing polypropylene in the amount of 99.3 mMass. pt) c to in relation to the total mass of the inner shell C and polyphenylsiloxane in the amount of O.7 mass. 95 in relation to the total mass of the inner shell 3. ;" The main reinforcing layer 4 is made of synthetic felt based on polypropylene fibers.

Between the additional reinforcing layer 5 (Fig. 8) and the outer film shell 2, coaxially place another additional reinforcing layer 11 of synthetic felt based on polypropylene fibers. c Mode of confirmation according to example 8, except for the pressure of 0.1 MPa. The results are the same as in example 7.

Example 10. The process is carried out similarly to example 9. 2) The coating materials are the same as in example 9, except for the materials of the outer 2 and inner film shells 5or | additional reinforcing layers 5 and 11. 1 Outer film shell 2 is made of multilayer polyethylene-polyamide film. і» The inner film shell C is formed by a homogeneous system containing a copolymer of propylene and vinyl acetate in the amount of 99.7 mass. 90 in relation to the total mass of the inner shell C and polymethylphenylsiloxane in the amount of O, Zmass. 95 in relation to the total mass of the inner shell 3.

Additional reinforcing layer 5 is made of glass mat. The additional reinforcing layer 11 is made of a mesh of carbon fibers.

F) Between the outer film shell 2 (Fig. 9) and the additional reinforcing layer 11, one more additional reinforcing layer 12 of fiberglass is placed coaxially. The mode of assertion according to example 8. The results are the same as in example 9. in Example 11.

The process is carried out similarly to example 10.

The coating materials are the same as in example 10, except for the materials of the inner film shell 3, additional reinforcing layer 5, and additional reinforcing layer 11.

The inner film shell C is formed by a homogeneous system containing a copolymer of propylene with 65 vinyl acetate in the amount of 99, Bmas. 90 in relation to the total mass of the inner shell C and polymethylphenylsiloxane in the amount of 0.5 mass. 95 in relation to the total mass of the inner shell 3.

Additional reinforcing layer 5 is made of combined glass material.

Additional reinforcing layer 11 is formed from synthetic felt from a mixture of polyester and polypropylene fibers.

The results are the same as in Example 10.

Example 12.

The process is carried out similarly to example 10.

The coating materials are the same as in example 10, except for the material of the inner film shell 3, additional reinforcing layer P, additional reinforcing layer 12 and binder. 70 The inner film shell C is formed by a homogeneous system containing a copolymer of propylene and vinyl acetate in the amount of 99% by weight. 90 in relation to the total mass of the inner shell C and polymethylphenylsiloxane in the amount of 0.7 mass. 90 in relation to the total mass of the inner shell 3.

The additional reinforcing layer 11 is made of a mesh based on polypropylene fibers.

Additional reinforcing layer 12 is made of synthetic felt based on polypropylene fibers. 15 Binder - epoxy. The mode of assertion according to example 8. The results are the same as in example 10.

Example 13.

The process is carried out similarly to example 2.

The difference is that in the region of the seam connecting the side edges b (Fig. 4) and 7 of the film and reinforcing fabric of the two-layer coating blank, between the above-mentioned region on the film side and the tape 8 of 2o material, identical to the material of the inner film shell , place a gasket 9 made of fluoroplastic of such a width that it is quite possible to close the seam, but less than the width of the tape 8 of a material identical to the material of the inner shell 3.

In this case, the tape 8 is welded on the side edges to the inner film shell Z along the axis of the workpiece and a hermetic connection is obtained. c 25 Materials for the coating are used the same as in example 2, except for the material of the inner film shell C, additional reinforcing layer 5 and binder. and)

The inner film shell C is formed by a homogeneous system containing polyvinyl chloride in the amount of 99.7 mass. 95 in relation to the total mass of the inner shell C and polyethylphenylsiloxane in the amount of O, Zmass. to in relation to the total mass of the inner shell 3. "g zo Additional reinforcing layer 5 is made of glass mat. Binder - polyester, thickened with aerosol. Before feeding the heat carrier into the cavity of the inner film shell C, air is supplied under a negative pressure of 0.05 Mpa for o minutes, and then the heat carrier is fed and the binder is confirmed according to example 2. The results are the same as in example 2.

Example 14. (22)

The process is carried out similarly to example 13

Materials for the coating are used the same as in example 13, except for the materials of the inner film shell C, additional reinforcing layer 5, additional reinforcing layer 11 and gasket 9.

The inner film shell C is formed by a homogeneous system containing polyvinyl chloride in the amount of 99.5 mass. 95 in relation to the total mass of the inner shell C and polyethylphenylsiloxane in the amount of 0.5 mass. « to in relation to the total mass of the inner shell 3. with c Additional reinforcing layer 5 is formed from a mesh of carbon fibers.

The additional reinforcing layer 11 is formed from a combined glass material. z Gasket 9 is made of synthetic fabric. The assertion is made according to example 13. The results are the same as in example 3.

Example 15. c The process is carried out similarly to example 13.

Materials for the coating are used the same as in example 13, except for the materials of the inner film and shell C and the additional reinforcing layer 11 and gasket 9. 2) The inner film shell C is formed by a homogeneous system containing polyvinyl chloride in the amount of 99, Zmas. 95 in relation to the total mass of the inner shell C and polyethylphenylsiloxane in the amount of 0.7 mass. o to in relation to the total mass of the inner film shell 3. i" Additional reinforcing layer 11 is made of glass mat. Gasket 9 is made of fiberglass. The assertion is made according to example 13. The results are the same as in example 13.

Example 16.

The process is carried out similarly to example 10.

The difference is that instead of tape 8 in Fig. 3, which is used to seal the seam,

F) use a shaped tape 10 with a T-shaped cross-section made of material identical to the material of the inner shell 3, as shown in Fig. 5.

The coating materials are used the same as in example 10, except for the materials of the inner film shell 3, the main reinforcing layer 4 and the additional reinforcing layer 12.

The inner film shell C is formed by a homogeneous system containing thermoplastic polyurethane based on simple polyester in the amount of 99.7 mass. 96 in relation to the total mass of the inner shell C and polymethylphenylsiloxane in the amount of O, Zmass. 95 in relation to the total mass of the inner shell 3.

The main reinforcing layer 4 is made of synthetic felt from a mixture of polyester and polypropylene 65 VoloKon. The additional reinforcing layer 12 is made of glass mat. Assertion mode according to example 10. The results are the same as in example 10.

Example 17.

The process is carried out similarly to example 16.

The coating materials are the same as in example 16, except for the material of the inner film shell 3, the additional reinforcing layer 11 and the additional reinforcing layer 12.

The inner film shell C is formed by a homogeneous system containing thermoplastic polyurethane based on simple polyester in the amount of 99.5 mass. 96 in relation to the total mass of the inner shell C and polymethylphenylsiloxane in the amount of 0.5 mass. 95 in relation to the total mass of the inner shell 3.

The additional reinforcing layer 11 is made of fiberglass. The additional reinforcing layer 12 is made of a mesh of 7/0 polyester fibers. Assertion mode according to example 13. The results are the same as in example 13.

Example 18.

The process is carried out similarly to example 17.

The coating materials are the same as in example 17, except for the material of the inner film shell C and the additional reinforcing layer 12.

The inner film shell C is formed by a homogeneous system containing thermoplastic polyurethane based on simple polyester in the amount of 99, Zmas. 96 in relation to the total mass of the inner shell C and polymethylphenylsiloxane in the amount of 0.7 mass. 95 in relation to the total mass of the inner shell 3.

Additional reinforcing layer 12 is made of combined glass material.

Curing mode: coolant - water; coolant temperature - 957; pressure - 0.05 MPa; approval time - days. The results are the same as in Example 17.

Example 19.

The process is carried out similarly to example 8, except for the connection of the side edges b and 7 (fig. b, 7 and 11), which is done by welding in a lap.

Coating materials are the same as in example 8, except for the material of the inner film shell 3

The inner film shell C is formed by a homogeneous system containing low-density polyethylene in the amount of mass. 96 in relation to the total mass of the inner shell 3, about polypropylene in the amount of 94.7 mass. 95 in relation to the total mass of the inner shell C and polyphenylsiloxane in the amount of 0. Weight. 90 in relation to the total mass of the inner shell 3.

The mode of confirmation according to example 18, except for the temperature of the heat carrier, which is 80"C, and the pressure, which is "gzo" is about 1MPa. The results are the same as in example 7.

Example 20. that)

The process is carried out similarly to example 18. p

Materials for the coating are the same as in example 18, except for the material of the inner film shell 3, additional reinforcing layers 5 and 12 and the binder. me)

The inner film shell C is formed by a homogeneous system containing low-density polyethylene in the amount of 45 mass. 95, polypropylene in the amount of 44.5 mass. 95 and polyphenylsiloxane in the amount of O, by mass. 956, taken in relation to the total mass of the inner shell 3.

Additional reinforcing layers 5 and 12 are formed from synthetic felt from a mixture of polyester and polypropylene fibers. "

The binder is polyester, thickened with a mixture of aerosol and magnesium oxide. with c The mode of assertion according to example 7. The results are the same as in example 18.

Example 21. ;" The process is carried out similarly to example 20.

The coating materials are the same as in example 20, except for the material of the inner film shell 3, and the additional reinforcing layer 12. c The inner film shell C is formed by a homogeneous system containing low-density polyethylene in the amount of U5 mass. 906, polypropylene in the amount of 4.3 mass. o and polyphenylsiloxane in the amount of O.7 mass. for, taken in se) in relation to the total mass of the inner shell 3. 2) The additional reinforcing layer 12 is made of a mesh of carbon fibers.

The mode of affirmation according to example 5, except for the affirmation time, which is bhd. The results are the same as in 1 example 20. i" Example 22.

The process is carried out similarly to example 10.

The coating materials are the same as in example 10, except for the material of the inner film shell 3, the main reinforcing layer 4 and the additional reinforcing layer 12.

The inner film shell C is formed by a homogeneous system containing polyethylene

F) ultrahigh molecular mass. 95, copolymer of propylene with vinyl acetate in the amount of 94.7 mass. 905 and ka polymethylsiloxane in the amount of 0.Zmas. 95, taken in relation to the total mass of the inner shell 3.

The main layer is made as in example 1, the additional reinforcing layer is made of synthetic felt based on polyester fibers.

Mode of confirmation according to example 9, except for the temperature of 1107C. The results are the same as in Example 22.

Example 23.

The process is carried out similarly to example 22. 65 Materials for coating are the same as in example 22, except for the material of the inner film shell C and the binder.

The inner film shell C is formed by a homogeneous system containing ultrahigh molecular weight polyethylene in the amount of 45 mass. 96, copolymer of propylene with vinyl acetate in the amount of 44.5 mass. 95 and polymethylsiloxane in the amount of 0.5 mass. 95, taken in relation to the total mass of the inner shell 3.

Binder - on the basis of unsaturated polyester resin, thickened with magnesium oxide. The assertion mode of Example 22. The results are the same as in Example 22.

Example 24.

The process is carried out similarly to example 6.

The coating materials are the same as in example 6, except for the material of the inner film shell 3.

The inner film shell C is formed by a homogeneous system containing ultra-high molecular weight polyethylene 70 in the amount of U5 mass. 96, copolymer of propylene with vinyl acetate in the amount of 4, Zmas. 905 and polymethylsiloxane in the amount of 0.7 mass. 95, taken in relation to the total mass of the inner shell 3.

The mode of assertion according to example 22. The results are the same as in example 6.

Example 25.

The process is carried out similarly to example 13. 15 Materials for coating are the same as in example 13, except for the material of the inner film shell 3.

The inner film shell C is formed by a homogeneous system containing polyvinyl chloride in the amount of 5 mass. to, thermoplastic polyurethane based on simple polyester in the amount of 94.7 mass. 95 and polymethylphenylsiloxane in the amount of O, Zmas. 95, taken in relation to the total mass of the inner shell 3.

The mode of curing according to example 19, except for the temperature of the heat carrier, which is 50"С, and the time of 20 curing, which is 15 hours. The results are the same as in example 13.

Example 26.

The process is carried out similarly to example 14.

The coating materials are the same as in example 14, except for the material of the inner film shell 3.

The inner film shell C is formed by a homogeneous system containing polyvinyl chloride in the amount of 45 mass. sch 25 to, thermoplastic polyurethane in the amount of 44.5 mass. 95 and polymethylphenylsiloxane in the amount of 0.5 mass. 95, taken in relation to the total mass of the inner shell 3. (8)

Mode of confirmation according to example 14, with the exception of a pressure of 0.1 MPa and an air supply time of 5 minutes.

The results are the same as in example 14. "g from Example 27.

The process is carried out similarly to example 15. o

Coating materials are the same as in example 15, except for the material of the inner film shell 3. p

The inner film shell C is formed by a homogeneous system containing polyvinyl chloride in the amount of 95 mass. to, thermoplastic polyurethane in the amount of 4, Grease. 95 and polymethylphenylsiloxane in the amount of 0.7 mass. 95, taken according to Me) 35 in relation to the total mass of the inner shell 3. ю

The curing mode according to example 15, with the exception of a pressure of 0.2MPa and a curing time of 1 hour.

Example 28.

Analogous to example 25, only in the homogeneous system of the inner film shell C, polyethylphenylsiloxane taken in the same quantity is used instead of polymethylphenylsiloxane. with c The mode of assertion according to example 25. The results are the same as in example 25.

Example 29. ;" Analogous to example 26, only in the homogeneous system of the inner film shell C, polyethylphenylsiloxane taken in the same quantity is used instead of polymethylphensiloxane.

Mode of assertion according to example 27. The results are the same as in example 27. c When describing the analyzed variants of the implementation of the invention, specific narrow terminology is used for clarity. However, the invention is not limited to the accepted terms, and it is necessary to keep in mind that each such term covers all equivalent terms that work similarly and are used to solve the same problems. 2) Although the present invention has been described in connection with a preferred mode of implementation, it is understood that changes and variations may occur without departing from the spirit and scope of the invention, which will be readily understood by those skilled in the art. o These changes and options are considered to be such that they do not go beyond the essence and scope of the invention and clauses of the appended claims.

Industrial suitability

The invention can be used in the construction of various pipelines, as well as in the repair of pipelines in operation. at

Claims (1)

Formula of the invention in 1. Covering the inner surface of the pipeline, which contains two coaxially located tubular film shells (2, 3) based on a thermoplastic polymer material, one of which - the outer one (2) - adheres to the inner surface of the pipeline (1), and the other - the inner (3) is separated from it by a coaxial main reinforcing layer (4) impregnated with a hardened polymer binder, which is characterized by the fact that the inner tubular film shell (3) is formed by a multi-component homogeneous system containing at least b5 ONE thermoplastic polymer having a relative elongation not less than 20095 and a melting point not lower than 1009, and a structural modifier of the selected polymer, while the inner tubular film shell (3) together with the main reinforcing layer (4) are made of canvas, the side edges of which are hermetically connected to each other, and the thermoplastic polymer is selected from the group containing low-density polyethylene, ultra-high molecular weight polyethylene, polypropylene, copolymer of propylene with vinyl acetate, polyvinyl chloride (|and Thermoplastic polyurethane 2. The coating according to claim 1, which is characterized by the fact that the structural modifier of the selected polymer is a polyorganosiloxane selected from the group containing polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane. C. The coating according to claim 2, which is characterized by the fact that the inner tubular film shell (3) is formed by a 70 multicomponent homogeneous system containing one polymer or a mixture of two polymers selected from the specified group of thermoplastic polymers in an amount of 99.3- 99.7 wt. 90 in relation to the total mass of the inner shell (3) and polyorganosiloxane in the amount of 0.3-0.7 wt. 95 in relation to the total mass of the inner shell (3). 4. The coating according to item C, which differs in that 7/5 low-density polyethylene is used as the selected thermoplastic polymer, and polymethylsiloxane is used as the polyorganosiloxane. 5. Coating according to claim 3, which differs in that ultrahigh molecular weight polyethylene is used as the selected thermoplastic polymer, and polymethylsiloxane is used as the polyorganosiloxane. b. Coating according to claim 3, which differs in that polypropylene is used as the selected thermoplastic polymer, and polyphenylsiloxane is used as the polyorganosiloxane. 7. The coating according to claim 3, which differs in that the copolymer of propylene with vinyl acetate is used as the selected thermoplastic polymer, and polymethylphenylsiloxane is used as the polyorganosiloxane. 8. Coating according to claim 3, which differs in that polyvinyl chloride is used as the selected thermoplastic polymer, and polyethylphenylsiloxane is used as the polyorganosiloxane. 9. Coating according to claim 3, which differs in that thermoplastic polyurethane is used as the selected thermoplastic polymer, and polymethylphenylsiloxane is used as polyorganosiloxane. 10. The coating according to item C, which differs in that as a mixture of two selected thermoplastic polymers i) a mixture of low-density polyethylene is used in the amount of 5-95 wt. 95 and polypropylene in the amount of 4.3-94.7 wt. 90 in relation to the mass of the inner shell (3), and as polyorganosiloxane - polyphenylsiloxane. 11. The coating according to item 3, which differs in that as a mixture of two selected thermoplastic polymers, the mixture of ultra-high molecular weight polyethylene is used in the amount of 5-95 wt. o and copolymer of propylene with vinyl acetate in the amount of 4.3-94.7 wt. 95 in relation to the mass of the inner shell (3), and as for polyorganosiloxane - polymethylsiloxane. co 12. The coating according to item C, which differs in that a mixture of polyvinyl chloride in the amount of 5-95 wt. is used as a mixture of two selected thermoplastic polymers. 90 and thermoplastic polyurethane in the amount of Me 4.3-94.7 wt. 96 in relation to the mass of the inner shell (3), and polymethylphenylsiloxane or polyethylphenylsiloxane was used as polyorganosiloxane. 13. The coating according to claim 1 or claim 2 or claim 3, which is characterized by the fact that it contains at least one additional reinforcing layer (5), coaxially located between the outer tubular film shell (2) and the main reinforcing layer (4). " 14. The coating according to claim 1 or claim 2, or item C, which is characterized by the fact that the main reinforcing layer (4) is made of synthetic non-woven fibrous material. And 15. Cover according to claim 1 or claim 2 or claim 3, which differs in that the side edges (6, 7) of the inner tubular of the film shell (3) together with the main reinforcing layer (4) are hermetically connected in a joint. 16. The coating according to claim 1 or claim 2 or claim 3, which is characterized by the fact that the side edges (6, 7) of the inner tubular shell (3) together with the main reinforcing layer (4) are hermetically connected inside. c 17. The method of coating the inner surface of the pipeline, which consists in the fact that tubular film shells (2, 3) based on thermoplastic and polymer material are placed coaxially outside the pipeline (1), one of which - the outer tubular (2) - is intended to adhere to the inner 2) surface of the pipeline (1), and the second - inner (3) - is separated from it by the main reinforcing layer (4), 5o impregnate the latter with a thermosetting polymer binder and obtain a multi-layer coating blank, which is inserted inside the pipeline (1) , then the coolant is fed under pressure into the cavity of the inner shell (3) with subsequent heat treatment and hardening of the binder, which is characterized by the fact that the main reinforcing layer (4) is connected to the inner film shell (3) by connecting the surfaces of the main of the reinforcing layer (4) and the inner film shell (3), formed from a film web obtained from a multi-component homogeneous system using mixtures melting in the melt of at least one thermoplastic polymer selected from the group of thermoplastic polymers having a relative elongation of at least 20095 and a melting point of at least 1002, and a structural modifier of this polymer, and by the subsequent hermetic connection of the side edges to each other (6 ,7) of the film web together with the main reinforcing layer (4) connected to it, obtaining a two-layer cover blank from the coaxially located and interconnected main reinforcing layer (4) and the inner tubular film shell (3), and already the obtained two-layer blank is placed coaxially with respect to the outer tubular film shell (2), while the thermoplastic polymer is selected from the group containing low-density polyethylene, ultra-high molecular weight polyethylene, polypropylene, copolymer of propylene with vinyl acetate, polyvinyl chloride (|and thermoplastic polyurethane. 65 18. The method according to claim 17, which is characterized by the fact that the structural modifier of the selected polymer is a polyorganosiloxane selected from the group containing polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane. 19. The method according to claim 18, which is characterized by the fact that the inner tubular film shell (3) is obtained from a multi-component homogeneous system by mixing in a melt one polymer or a mixture of two polymers selected from the specified group of thermoplastic polymers (3) in the amount of 99 ,3-99.7 wt. 90 in relation to the total mass of the inner shell (3), and polyorganosiloxane in the amount of 0.3-0.7 wt. 95 in relation to the total mass of the inner shell (3). 20. The method according to claim 18, which differs in that low-density polyethylene is used as the selected thermoplastic polymer, and polymethylsiloxane is used as the polyorganosiloxane. 70 21. The method according to claim 18, which differs in that ultra-high molecular weight polyethylene is used as the selected thermoplastic polymer, and polymethylsiloxane is used as the polyorganosiloxane. 22. The method according to claim 18, which differs in that polypropylene is used as the selected thermoplastic polymer, and polyphenylsiloxane is used as the polyorganosiloxane. 23. The method according to claim 18, which is characterized by the fact that 7/5 bisemipolymer of propylene with vinyl acetate is used as the selected thermoplastic polymer, and polymethylphenylsiloxane is used as the polyorganosiloxane. 24. The method according to claim 18, which differs in that polyvinyl chloride is used as the selected thermoplastic polymer, and polyethylphenylsiloxane is used as the polyorganosiloxane. 25. The method according to claim 18, which differs in that thermoplastic polyurethane is used as the selected thermoplastic polymer, and polymethylphenylsiloxane is used as the polyorganosiloxane. 26. The method according to claim 18, which is characterized by the fact that as a mixture of two selected thermoplastic polymers, a mixture of low-density polyethylene is used in the amount of 5-95 wt. 905 and polypropylene in the amount of 4.3-94.7 wt. 96 in relation to the mass of the inner shell (3), and as polyorganosiloxane - polyphenylsiloxane. 27. The method according to claim 18, which differs in that as a mixture of two selected thermoplastic polymers, a mixture of ultrahigh molecular weight polyethylene is used in the amount of 5-95 wt. 90 and copolymer of propylene with vinyl acetate in the amount of 4.3-94.7 wt. 95 in relation to the mass of the inner shell (3), and as for polyorganosiloxane - polymethylsiloxane. 28. The method according to claim 18, which differs in that as a mixture of two selected thermoplastic polymers, a mixture of polyvinyl chloride is used in the amount of 5-95 wt. 95 and thermoplastic polyurethane in the amount of 4.3-94.7 wt. 95 in relation to the mass of the inner shell (3), and as ppolyorganosiloxane - "g Zo Ppolymethylphenylsiloxane or polyethylphenylsiloxane. 29. The method according to claim 17 or claim 18 or claim 19, which differs in that at least one additional reinforcing layer (5) is placed between the outer tubular film shell (2) and the main reinforcing layer (4). with 30. The method according to claim 17 or claim 18 or claim 19, which differs in that the main reinforcing layer (4) is made of synthetic fibrous non-woven material. Me 31. The method according to claim 17 or claim 18 or claim 19, which is characterized by the fact that the side edges (6, 7) of the film sheet together with the main reinforcing layer (4) connected to it are hermetically joined in a joint. 32. The method according to claim 17 or claim 18 or claim 19, which is characterized by the fact that the side edges (6, 7) of the film sheet together with the main reinforcing layer (4) connected to it are hermetically connected. 33. Two-layer blank covering the inner surface of the pipeline, containing the main reinforcing layer " 40. 8), connected to the inner tubular film shell (3) of a coating based on thermoplastic polymer film material, which is characterized by the fact that the inner tubular film shell (3) is formed by a multi-component homogeneous system containing at least one thermoplastic polymer , "» having a relative elongation of at least 20095 and a melting point of at least 100 oC, and a structural modifier of the selected polymer, while the inner tubular film shell (3) together with the main reinforcing layer (4) connected to it are made of cloth, the side edges (6, 7) of which are hermetically connected to each other, and the thermoplastic polymer is selected from the group containing low-density polyethylene, ultra-high molecular weight polyethylene, polypropylene, a copolymer of propylene with vinyl acetate, polyvinyl chloride (i.e. thermoplastic polyurethane, 34 Two-layer blank according to claim 33, which is characterized by the fact that the structural modifier of the selected polymer is a polyorganosiloxane, selected the first from the group containing polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane. Article 35. A two-layer blank according to claim 34, which is characterized by the fact that the inner tubular film shell (3) is formed by a multi-component homogeneous system containing one polymer or a mixture of two polymers, selected from the specified group of thermoplastic polymers, in the amount of 99, 3-99.7 wt. 96 in relation to the total mass of the inner shell (3), and polyorganosiloxane in the amount of 0.3-0.7 wt. 95 in relation to the total mass of the inner shell (3). F, 36. Two-layer blank according to claim 35, which differs in that low-density polyethylene is used as the selected thermoplastic polymer, and polymethylsiloxane is used as the polyorganosiloxane. 37. A two-layer blank according to claim 35, which differs in that the selected thermoplastic polymer is ultrahigh molecular weight polyethylene, and polymethylsiloxane is used as the polyorganosiloxane. 38. Two-layer blank according to claim 35, which differs in that polypropylene is used as the selected thermoplastic polymer, and polyphenylsiloxane is used as the polyorganosiloxane. 39. Two-layer blank according to claim 35, which differs in that a copolymer of propylene with vinyl acetate is used as the selected thermoplastic polymer, and polymethylphenylsiloxane is used as the polyorganosiloxane. 65 40. Two-layer blank according to claim 35, which differs in that polyvinyl chloride is used as the selected thermoplastic polymer, and polyethylphenylsiloxane is used as polyorganosiloxane. 41. Two-layer blank according to item C5, which differs in that thermoplastic polyurethane is used as the selected thermoplastic polymer, and polymethylphenylsiloxane is used as the polyorganosiloxane. 42. Two-layer blank according to claim 35, which is characterized by the fact that a mixture of low-density polyethylene is used as a mixture of two selected thermoplastic polymers in the amount of 5-95 wt. 90 and polypropylene in the amount of 4.3-94.7 wt. 95 in relation to the mass of the inner shell (3), and as polyorganosiloxane - polyphenylsiloxane. 43. Two-layer blank according to claim 35, which differs in that as a mixture of two selected thermoplastic polymers, a mixture of ultra-high molecular weight polyethylene is used in the amount of 5-95 wt. 90 and copolymer 7/0 propylene with vinyl acetate in the amount of 4.3-94.7 wt. 96 in relation to the mass of the inner shell (3), and as polyorganosiloxane - polymethylsiloxane. 44. Two-layer blank according to claim 35, which is characterized by the fact that a mixture of polyvinyl chloride in the amount of 5-95 wt. is used as a mixture of two selected thermoplastic polymers. 95 and thermoplastic polyurethane in the amount of 4.3-94.7 wt. 95 in relation to the mass of the inner shell (3), and polymethylphenylsiloxane or polyethylphenylsiloxane was used as polyorganosiloxane. 45. Two-layer blank according to claim 33 or claim 34 or claim 35, which is characterized by the fact that the main reinforcing layer (4) is made of synthetic non-woven fibrous material. 46. Two-layer blank according to claim 33 or claim 34 or claim 35, which is characterized by the fact that the side edges (6, 7) of the inner tubular film shell (3) connected to the main reinforcing layer (4) are hermetically connected Between themselves along the axis of the two-layer cover blank. 47. Two-layer blank according to claim 33 or claim 34 or claim 35, which is characterized by the fact that the side edges (6, 7) of the inner tubular film shell (3) connected to the main reinforcing layer (4) are hermetically connected between each other in a gap along the axis of the two-layer cover blank. 48. The method of obtaining a two-layer blank covering the inner surface of the pipeline, which consists in the fact that the inner tubular film shell (3) of the coating based on thermoplastic polymer material is connected to the main reinforcing layer (4), which differs in that the inner tubular the film shell and) (3) are formed from a film web obtained from a multi-component homogeneous system by mixing in a melt at least one thermoplastic polymer, which has a relative elongation of at least 20095 and a melting temperature of at least 10029, and a structural modifier of the selected polymer, connect "The surfaces of this film sheet and the main reinforcing layer (4), then hermetically connect the side edges (6, 7) of the film sheet together with the main reinforcing layer (4) connected to it with each other, while the selected thermoplastic polymer from the group containing low-density polyethylene, polyethylene with ultrahigh molecular weight, polypropylene, copolymer of propylene with nyl acetate, polyvinyl chloride (|and thermoplastic polyurethane. b 49. The method according to claim 48, which is characterized by the fact that the structural modifier of the selected polymer is a polyorganosiloxane selected from the group containing polymethylsiloxane, polymethylphenylsiloxane, polyphenylsiloxane and polyethylphenylsiloxane. 50. The method according to claim 49, which is characterized by the fact that the inner tubular film shell (3) is obtained from a "multicomponent homogeneous system by mixing in a melt one polymer or a mixture of two polymers selected from the specified group of thermoplastic polymers in the amount of 99, 3-99.7 wt. 95 in relation to the total mass of the inner shell (3) and polyorganosiloxane in the amount of 0.3-0.7 wt. 90 in relation to the total mass of the inner shell (3). "» 51. The method according to claim 50, which differs in that low-density polyethylene is used as the selected thermoplastic polymer, and polymethylsiloxane is used as the polyorganosiloxane. 52. The method according to claim 50, which differs in that ultrahigh molecular weight polyethylene is used as the selected thermoplastic polymer, and polymethylsiloxane is used as the polyorganosiloxane. 53. The method according to claim 50, which differs in that polypropylene is used as the selected thermoplastic polymer, and polyphenylsiloxane is used as the polyorganosiloxane. 54. The method according to claim 50, which is characterized by the fact that a copolymer of propylene with vinyl acetate is used as the selected thermoplastic polymer, and polymethylphenylsiloxane is used as the polyorganosiloxane. and 55. The method according to claim 50, which differs in that polyvinyl chloride is used as the selected thermoplastic polymer, and polyethylphenylsiloxane is used as the polyorganosiloxane. 56. The method according to claim 50, which differs in that thermoplastic polyurethane is used as the selected thermoplastic polymer, and polymethylphenylsiloxane is used as the polyorganosiloxane. 57. The method according to claim 50, which differs in that as a mixture of two selected thermoplastic polymers, a mixture of low-density polyethylene is used in the amount of 5-95 wt. 905 and polypropylene in the amount of 4.3-94.7 wt. 96 in relation to the mass of the inner shell (3), and as polyorganosiloxane - polyphenylsiloxane. ko 58. The method according to claim 50, which differs in that as a mixture of two selected thermoplastic polymers, a mixture of ultra-high molecular weight polyethylene is used in the amount of 5-95 wt. 90 and propylene copolymer with vinyl acetate in the amount of 4.3-94.7 wt. 95 in relation to the mass of the inner shell (3), and as polyorganosiloxane - polymethylsiloxane. 59. The method according to claim 50, which differs in that as a mixture of two selected thermoplastic polymers, a mixture of polyvinyl chloride is used in the amount of 5-95 wt. 90 and thermoplastic polyurethane in the amount of 4.3-94.7 wt. 95 in relation to the mass of the inner shell (3), and as ppolyorganosiloxane - 65 polymethylphenylsiloxane or polyethylphenylsiloxane. 60. The method according to claim 48 or claim 49 or claim 50, which differs in that the main reinforcing layer (4) is made of synthetic fibrous non-woven material. 61. The method according to claim 48 or claim 49 or claim 50, which is characterized by the fact that the side edges (6, 7) of the film sheet connected to the main reinforcing layer (4) are hermetically connected to each other in a joint. 62. The method according to claim 48 or claim 49 or claim 50, which is characterized by the fact that the side edges (6, 7) of the film sheet connected to the main reinforcing layer (4) are hermetically connected to each other in the inside. 6) « IS) (ze) (o) IS o) - with . and? 1 se) (95) s 50 s» ime) bo b5