A coilable glass fiber reinforced plastic composite pipe and its preparation method

A technology of reinforced plastics and composite pipes, applied in the direction of hoses, pipes, mechanical equipment, etc., can solve the problems of short service life of steel pipes, difficult to meet the requirements of external compressive strength, and difficult to bend, and achieve the effect of improving the axial tension.

Active Publication Date: 2017-05-10
河北宇通特种胶管有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The downhole water injection pipeline welded by this kind of steel pipe is not only difficult to install and maintain due to its heavy weight and inability to bend when going downhole, but also has a short service life of the steel pipe due to its corrosiveness downhole. kind of waste
[0003] The composite high-pressure delivery pipe commonly used in petroleum transportation, such as a new type of reinforced winding pipe disclosed in the invention patent application with the Chinese patent application number 201310530359.5, the winding pipe is a straight pipe structure composed of polyethylene or polypropylene resin as the main raw material. , this kind of winding pipe composed of directly winding the reinforcing layer on the plastic inner pipe layer, although it can withstand internal pressure better, its resistance to external pressure is difficult to meet the requirements; Chinese patent application number is 201210473730.4 invention patent application publication An epoxy resin impregnated glass fiber tape continuous reinforced composite pipe is disclosed, its structure includes an inner pipe, an epoxy resin impregnated glass fiber tape reinforcement layer wound on the outer layer of the inner pipe, a modified closed-cell foam insulation layer and an outsourcing Covered with a polyethylene outer protective layer, the composite pipe of this structure is not only difficult to meet the needs of internal and external pressure performance, but also difficult to bend because the reinforced layer is composed of epoxy resin impregnated glass fiber tape, so it cannot meet the needs of downhole pipes

Method used

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  • A coilable glass fiber reinforced plastic composite pipe and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1、50

[0033] Embodiment 1, the polyhydroxypolyether mixture of 50 parts by weight, the dibutyl phthalate of 12.0 parts by weight, the polyurethane resin of 28.0 parts by weight, the accelerator of 3.0 parts by weight, the castor oil of 0.5 parts by weight, the castor oil of 1.4 parts by weight Parts of trimethylolpropane (TMP), 0.6 parts by weight of phosphoric acid and 4.5 parts by weight of flame retardant;

Embodiment 2、50

[0034] Embodiment 2, the polyhydroxypolyether mixture of 50 parts by weight, the dibutyl phthalate of 10.0 parts by weight, the polyurethane resin of 32.0 parts by weight, the accelerator of 2.5 parts by weight, the castor oil of 0.4 parts by weight, the castor oil of 1.3 parts by weight Parts of trimethylolpropane (TMP), 0.5 parts by weight of phosphoric acid and 4.2 parts by weight of flame retardant;

[0035] Embodiment 3, the polyhydroxypolyether mixture of 50 parts by weight, the dibutyl phthalate of 8.0 parts by weight, the polyurethane resin of 30.0 parts by weight, the accelerator of 2.0 parts by weight, the castor oil of 0.3 parts by weight, the castor oil of 1.2 parts by weight Parts of trimethylolpropane (TMP), 0.4 parts by weight of phosphoric acid and 4.0 parts by weight of flame retardant;

Embodiment 4、50

[0036] Embodiment 4, the polyhydroxypolyether mixture of 50 parts by weight, the dibutyl phthalate of 9.0 parts by weight, the polyurethane resin of 29.0 parts by weight, the accelerator of 2.5 parts by weight, the castor oil of 0.6 parts by weight, the castor oil of 1.6 parts by weight Parts of trimethylolpropane (TMP), 0.3 parts by weight of phosphoric acid and 5.0 parts by weight of flame retardant;

[0037] Embodiment 5, the bisphenol A epoxy resin of 60 weight parts, the K54 tertiary amine of 5.0 weight parts, the HG-66 active silicon micropowder of 3.0 weight parts, the epichlorohydrin of 0.6 weight parts, the curing agent of 30.0 weight parts, The oil-absorbing resin of 1.0 weight part and the toughening agent of 0.6 weight part;

[0038] Embodiment 6, the bisphenol A epoxy resin of 60 weight parts, the K54 tertiary amine of 4.5 weight parts, the HG-66 active silicon micropowder of 3.2 weight parts, the epichlorohydrin of 0.2 weight part, the curing agent of 28.0 weight...

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Abstract

The invention belongs to the technical field of plastic composite pipe material and discloses a coilable type glass fiber reinforced plastic composite pipe. The technical scheme of the coilable type glass fiber reinforced plastic composite pipe is that the composite pipe comprises an inner pipe layer, a reinforced layer and an outer pipe layer, wherein the reinforced layer consists of a coiled layer or a woven layer which is formed of resin-impregnated glass fiber. According to the coilable type glass fiber reinforced plastic composite pipe, the reinforced layer utilizes the resin which is mainly composed of polyether polyol mixture, dibutyl phthalate, polyurethane resin or bisphenol-A epoxy resin, K54 tertiary amine and HG-66 active silicon micro powder, so that the reinforced layer is solidified with the glass fiber to form an integral fiberglass-reinforced structure with bending property. The coilable type glass fiber reinforced plastic composite pipe has the bending property and enough anti-external-pressure property.

Description

technical field [0001] The invention belongs to the technical field of composite pipes, and in particular relates to a coilable glass fiber reinforced plastic composite pipe used in the fields of petroleum, chemical industry, ocean and the like, especially for downhole water injection and a preparation method thereof. Background technique [0002] Downhole water injection in oil wells is used to increase the pressure of oil reservoirs. The pipelines used for downhole water injection are steel pipes; since the oil wells are mostly hundreds of meters to thousands of meters, the steel pipe fibers used are only welded with steel pipes with a single length of about ten meters. The downhole water injection pipeline welded by this kind of steel pipe is not only difficult to install and maintain due to its heavy weight and inability to bend when going downhole, but also has a short service life of the steel pipe due to its corrosiveness downhole. kind of waste. [0003] The compos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L11/08F16L11/24C08L71/02C08L75/04C08L91/00C08L63/00C08L101/00C08K3/36B29D23/00
CPCB29D23/001C08L63/00C08L71/02C08L2203/18C08L2205/03F16L11/085F16L11/086F16L11/087F16L11/24C08L75/04C08L91/00C08L101/00C08K3/36
Inventor 张鹏赵成春
Owner 河北宇通特种胶管有限公司
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