WO2012159520A1

WO2012159520A1 - Non-adhesive pultruded composite tube

Info

Publication number: WO2012159520A1
Application number: PCT/CN2012/074636
Authority: WO
Inventors: 吴新章; 赵建强
Original assignee: 文登鸿通管材有限公司
Priority date: 2011-05-23
Filing date: 2012-04-25
Publication date: 2012-11-29
Also published as: MY163436A; CN102182875A; CN102182875B

Abstract

A nonmetallic pipeline for conveying a fluid medium, specifically a non-adhesive pultruded composite tube provided with a liner layer (1) formed through extrusion molding of high polymer. Arranged on the outer surface of the liner layer (1) is a hoop layer (2) formed by directly winding and curing resin and high-strength fibers thereupon; a framework layer (3) is formed on the hoop layer by directly winding a resin and high-strength fiber pultruded composite strip thereupon at an angle of 30°-70° to the axial direction; a wear-resistant layer (4) is formed on the framework layer by winding tensile water cloth thereupon at an angle of 70°-85° to the axial direction; a tensile armor layer (5) is formed on the wear-resistant layer by directly winding a resin and high-strength fiber pultruded strip thereupon at an angle to the axial direction; an outer protective layer (6) is formed on the tensile armor layer by winding an ageing-resistant high polymer extruded composite strip thereupon. The present composite tube is simple in structure, of logical design, low in cost, and easy to manufacture while featuring high compression strength and tensile strength, high corrosion resistance and bending resistance, and being convenient to transport and deploy and having a long service life. Due to relative movement between layers, the length of the product can reach 2 km, continuous laying in a long distance can be realized, and connection between tubes is reduced.

Description

Non-bonded pultrusion composite pipe

Technical field

The present invention relates to a non-metallic pipe for conveying a fluid medium, and more particularly to a non-bonded type pultrusion composite pipe.

Background technique

At present, non-metallic pipes for conveying high-pressure fluid media at home and abroad mainly include glass steel pipes and steel skeleton composite pipes. The pipe made of non-metallic material has the advantages of corrosion resistance, wear resistance, smooth pipe wall, light weight and high strength, low thermal conductivity, double-sided anti-corrosion, etc. Its application not only overcomes the problems that metal materials are difficult to solve, but also prolongs the service life. Reduced investment costs. The existing glass steel pipe has high hardness and cannot be bent, which is inconvenient for transportation and installation; the steel skeleton composite pipe is made of steel wire as a reinforcing layer and plastic as a base body, so there are problems such as low pressure resistance and easy cracking.

Summary of the invention

The object of the present invention is to solve the deficiencies of the above-mentioned techniques, and to provide a non-bonded type pultrusion composite pipe which has reasonable structure, is easy to manufacture, is convenient to install and use, has a long service life, and has good rigidity and bending coiling performance.

The technical solution adopted by the invention is: a non-bonding type pultrusion composite pipe, which is provided with an inner liner layer extruded from a polymer, and the inner liner layer is directly provided with a resin and a high-strength fiber. Winding and curing the circumferential layer formed on the outside of the inner liner layer, and on the circumferential layer, a skeleton layer formed by directly entanglement of the resin and the high-strength fiber pultrusion composite strip at an angle of 30° to 70° in the axial direction is provided, and the skeleton layer is formed. The outer part is wrapped with water cloth at an angle of 70° to 85° in the axial direction to form an anti-friction layer outside the skeleton layer. The outer part of the anti-friction layer is directly wound by the resin and the high-strength fiber pultrusion belt at an angle with the axial direction. The tensile armor layer is provided with an anti-aging polymer to be extruded into an outer sheath on the tensile armor layer.

Between the hoop layer and the skeleton layer, there is no adhesion between the skeleton layer and the anti-friction layer, the anti-friction layer and the tensile armor layer, and the relative movement is possible.

The hoop layer is directly wound on the inner liner layer by a resin and high-strength fibers, and is heat-cured and formed at a heating temperature of 40 ° C to 80 ° C for 5 to 8 hours.

The resin fiber composite strip is formed by pultrusion of a resin and a high-strength alkali-free glass fiber after being pultrused at a temperature of 100 ° C.

The water cloth is an anti-wear material.

The tensile armor layer is composed of two layers, and the inner layer is directly wound on the anti-wear layer by a resin and a high-strength fiber pultrusion belt at an angle of 40° to 80° in the axial direction, and the outer layer is made of resin and high. The strength fiber pultrusion belt is wound directly on the inner layer at an angle of 180° to (40° to 80°) in the axial direction.

The composite tape of the outer sheath is a composite tape of 30 to 50 mm formed by an aging resistant polymer through an extruder.

The tensile armor layer resin and the high-strength fiber pultrusion belt are formed by pultrusion of a flexible pultrusion resin and high-strength alkali-free glass fiber by a pultrusion die, and curing at a temperature of 100 ° C.

The invention has the advantages of simple structure, reasonable design, low cost, easy manufacture, high compression resistance, high tensile strength, good corrosion resistance and bending resistance, convenient transportation, convenient use and long service life, and the product length can be reached due to relative movement between layers. 2 kilometers, can achieve continuous laying between long distances, reducing the connection between the tubes.

The invention will be further described below in conjunction with the drawings and specific embodiments.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

Figure 2 is an end view of Figure 1.

1, 2, lining, 2, hoop layer, 3, skeleton layer, 4, anti-wear layer, 5, tensile armor layer, 6, outer sheath.

detailed description

1 and 2, a non-bonded pultrusion composite pipe is provided with an inner liner layer 1 extruded from a polymer PE with an auxiliary agent, and the inner liner layer 1 has a diameter of 40 to 300 mm. The wall thickness is generally determined to be 2.3 to 4.5 mm depending on the performance of the product. The inner liner layer 1 is provided with a circumferential layer 2 formed by directly wrapping the resin and high-strength fibers to form an outer layer of the inner liner. The loop layer is directly wound on the inner liner layer by resin and high-strength fibers for heat curing. Molding, heating temperature is 40 to 80 ° C, and the time is 5 to 8 hours. The skeleton layer is formed on the circumferential layer by a resin and a high-strength fiber pultrusion composite strip which is directly wound at an angle of 30° to 70° in the axial direction. The resin fiber composite strip is made of resin and high-strength alkali-free glass fiber. After pultrusion of the mold, it is formed by curing at a temperature of 100 ° C; the outer portion of the skeleton layer is an anti-friction layer 4 formed by wrapping the outer layer of the skeleton layer with an angle of 70° to 85° with an axial direction; the outer portion of the anti-friction layer The tensile armor layer 5 is formed by directly winding the resin and the high-strength fiber pultrusion belt at an angle with the axial direction. The tensile armor layer is composed of two layers, and the inner layer is made of resin and high-strength fiber pultrusion belt. The axial direction is directly wrapped around the anti-friction layer at an angle of 40° to 80°, and the outer layer is directly wound around the inner layer by a resin and a high-strength fiber pultrusion belt at an angle of 180°-(40°-80°) to the axial direction. Upper, that is, the inner layer and the outer layer of the tensile armor layer are spirally wound in opposite directions, which can maintain the balance of the force. For example, if the inner layer is at an angle of 40° with the axial direction, the outer layer and the axial direction are at 140°. Angle; and so on, if the inner layer is at an angle of 60° to the axial direction, the outer layer forms an angle of 120° with the axial direction; if the inner layer is 80 with the axial direction ° The angle between the outer layer and the axial direction is 100°. The tensile armor layer resin and the high-strength fiber pultrusion belt are formed by pultrusion of a flexible pultrusion resin and high-strength alkali-free glass fiber by a pultrusion die, and curing at a temperature of 100 ° C. The tensile armor layer can be increased according to the increase in pressure. An outer sheath 6 formed by winding a composite tape extruded from an aging resistant polymer is provided on the tensile armor layer, and the composite tape of the outer sheath is an aging resistant polymer through an extruder. It is a composite belt of 30 to 50 mm. Thereby, a loop layer and a skeleton layer are formed, and the skeleton layer and the anti-friction layer, the anti-friction layer and the tensile armor layer have no adhesion, and can move relative to each other.

The invention consists of an inner liner layer 1, a circumferential layer 2, a skeleton layer 3, an anti-friction layer 4, a tensile armor layer 5 and an outer sheath layer 6, a loop layer and a skeleton layer, a skeleton layer and an anti-wear layer. There is no adhesion between the anti-wear layer and the tensile armor layer, and the relative movement can be realized. The polymer layer PE is used as an auxiliary liner to form the inner liner layer, and the resin and the high-strength flawless glass fiber are drawn and solidified. The utility model has the advantages of reasonable design, simple structure, corrosion resistance, high compression resistance, high tensile strength, rigidity, and bending coil, and can continuously produce a composite pipe of 2 kilometers in one time, which is convenient to use and widely used for conveying high-pressure fluid medium. , continuous laying can be achieved.

Claims

A non-bonding type pultrusion composite pipe characterized in that an inner liner layer extruded from a polymer is provided, and an inner liner layer is directly provided with a resin and a high-strength fiber directly wound and solidified outside the inner liner layer. The circumferential layer is formed on the circumferential layer with a skeleton layer formed by directly entanglement of the resin and the high-strength fiber pultrusion composite strip with an axial angle of 30° to 70°, and the outer layer of the skeleton layer is made of water cloth and The axial direction is 70°～85°, and the anti-wear layer is formed outside the skeleton layer. The outer part of the anti-friction layer is a tensile armor formed by directly winding the resin and the high-strength fiber pultrusion belt at an angle with the axial direction. The layer is provided with an outer sheath formed by winding a composite tape extruded from an ageing resistant polymer on the tensile armor layer.
The non-adhesive type pultrusion composite pipe according to claim 1, characterized in that there is no adhesion between the hoop layer and the skeleton layer, between the skeleton layer and the anti-friction layer, and between the anti-friction layer and the tensile armor layer. Can move relative to each other.
The non-bonded pultruded composite pipe according to claim 1, wherein the hoop layer is directly wound on the inner liner layer by a resin and high-strength fibers, and is heated and solidified at a heating temperature of 40 ° C to 80 ° C. The time is 5-8 hours.
The non-bonded pultrusion composite pipe according to claim 1, wherein the resin fiber composite strip is formed by pultrusion of a resin and high-strength alkali-free glass fiber after being tempered at a temperature of 100 ° C.
The non-bonded pultruded composite pipe according to claim 1, wherein the water cloth is an abrasion resistant material.
The non-bonded pultruded composite pipe according to claim 1, wherein the tensile armor layer is composed of two layers, and the inner layer is made of resin and high-strength fiber pultruded tape and is 40° to 80° in the axial direction. The angle is directly wound on the anti-friction layer, and the outer layer is directly wound on the inner layer by a resin and a high-strength fiber pultrusion belt at an angle of 180° to (40° to 80°) in the axial direction.
The non-adhesive pultrusion composite pipe according to claim 1, wherein the composite tape of the outer sheath is a composite tape of 30 to 50 mm formed by an aging resistant polymer through an extruder.
The non-bonded pultruded composite pipe according to claim 5, wherein the resin of the tensile armor layer and the high-strength fiber pultrusion tape are passed through a pultrusion die by a flexible pultruded resin and a high-strength alkali-free glass fiber. Pultrusion, molding after curing at a temperature of 100 ° C.