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A kind of flexible composite pipe and its manufacturing method

The technology of a flexible composite pipe and its manufacturing method, which is applied in the field of flexible composite pipes, can solve the problems of high blasting pressure flexible composite pipes and low bursting pressure of pipes, and achieve the effect of high blasting pressure and simple process

Active Publication Date: 2020-10-16
GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of manufacturing process is relatively complicated. Since the winding angle is close to 55°, it usually requires multiple prepreg tapes to be wound at the same time. The consistency of the gap after the liner is installed is good, but if you do not use an angle close to 55° for winding, only use hoop winding, due to the characteristics of fiber-reinforced thermoplastic unidirectional prepreg tape, the strength in the fiber direction is higher, and in the direction perpendicular to the fiber Very low strength, resulting in a low burst pressure for wound-formed tubing
[0003] So far, there is no relevant report on how to make fiber fabric into fiber fabric thermoplastic prepreg tape, and then use fiber fabric thermoplastic prepreg tape to hoop winding to obtain a flexible composite pipe with high burst pressure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of flexible composite pipe, from the inside to the outside is inner liner, fiber fabric thermoplastic prepreg tape and outer protective layer, the inner diameter of flexible composite pipe is 100mm, the thickness of inner liner is 2mm, the thickness of fiber fabric thermoplastic prepreg tape is 1mm, the thickness of the outer protective layer is 5mm. The fiber fabric thermoplastic prepreg tape contains 3 parts by weight of thermoplastic resin and 7 parts by weight of fiber fabric, and the fiber fabric is glass fiber.

[0027] The manufacturing method of the flexible composite pipe is as follows:

[0028] (1) Thermoplastics are made from thermoplastic resins;

[0029] (2) Under the conditions of 168°C and 15MPa, thermoplastics are vertically injected into the mold cavity using a high-pressure injection molding machine to make a fiber fabric thermoplastic prepreg tape. The upper part of the mold cavity is a high-pressure injection molding machine, and the lower pa...

Embodiment 2

[0033] A flexible composite pipe, from the inside to the outside is an inner liner, a fiber fabric thermoplastic prepreg tape and an outer protective layer, the inner diameter of the flexible composite pipe is 100mm, the thickness of the inner liner is 10mm, and the thickness of the fiber fabric thermoplastic prepreg tape is 10mm, the thickness of the outer protective layer is 5mm, the fiber fabric thermoplastic prepreg tape comprises the thermoplastic resin of 4 weight parts and the fiber fabric of 6 weight parts, and the fiber fabric comprises 10wt% carbon fiber, 30wt% glass fiber, 10wt% aromatic Polyester fiber, 20wt% polyester fiber, 30wt% polyethylene fiber.

[0034] The manufacturing method of the flexible composite pipe is as follows:

[0035] (1) Thermoplastics are made from thermoplastic resins;

[0036] (2) Under the conditions of 263°C and 24MPa, thermoplastics are vertically injected into the mold cavity using a high-pressure injection molding machine to make a fi...

Embodiment 3

[0040] A flexible composite pipe, from the inside to the outside is an inner liner, a fiber fabric thermoplastic prepreg tape and an outer protective layer, the inner diameter of the flexible composite pipe is 10 mm, the thickness of the inner liner is 1 mm, and the thickness of the fiber fabric thermoplastic prepreg tape is 1mm, the thickness of the outer protective layer is 5mm, the fiber fabric thermoplastic prepreg tape contains 5 parts by weight of thermoplastic resin and 5 parts by weight of fiber fabric, and the fiber fabric is glass fiber.

[0041] The manufacturing method of the flexible composite pipe is as follows:

[0042] (1) Thermoplastics are made from thermoplastic resins;

[0043] (2) Under the conditions of 260°C and 13MPa, thermoplastics are vertically injected into the mold cavity using a high-pressure injection molding machine to make a fiber fabric thermoplastic prepreg tape. The upper part of the mold cavity is a high-pressure injection molding machine, ...

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Abstract

The invention discloses a flexible composite pipe and a manufacturing method thereof. The flexible composite pipe comprises a fiber fabric thermoplastic prepreg, the thickness ranges from 0.1 mm to 30 mm, the inner diameter of the flexible composite pipe ranges from 10 mm to 200 mm, and the fiber fabric thermoplastic prepreg in the flexible composite pipe comprises following components including, by weight, 2 parts to 8 parts of thermoplastic resin and 2 parts to 8 parts of fiber fabric. The manufacturing method of the fiber fabric thermoplastic prepreg comprises the steps that the thermoplastic plastic is vertically injected to a hole plate with fiber fabric through a thermoplastic plastic injection process under the condition that the temperature ranges from 150 DEG C to 400 DEG C, and the pressure ranges from 10 MPa to 30 MPa, and the fiber fabric thermoplastic prepreg is manufactured; and the fiber fabric thermoplastic prepreg is wound to form the flexible composite pipe. During manufacturing of the flexible composite pipe, the annular winding method is adopted, the method can be widely applied to production of the flexible composite pipe, product stability is greatly improved, and machining equipment and process are simple.

Description

technical field [0001] The invention relates to the technical field of flexible composite pipes, in particular to a flexible composite pipe reinforced with a fiber fabric prepreg tape and a manufacturing method thereof. Background technique [0002] The current mainstream manufacturing process of flexible composite pipes mainly uses fiber-reinforced thermoplastic unidirectional prepreg tapes to be helically wound at a certain angle, and the commonly used winding angle is close to 55°. This kind of manufacturing process is relatively complicated. Since the winding angle is close to 55°, it usually requires multiple prepreg tapes to be wound at the same time. The consistency of the gap after the liner is installed is good, but if you do not use an angle close to 55° for winding, only use hoop winding, due to the characteristics of fiber-reinforced thermoplastic unidirectional prepreg tape, the strength in the fiber direction is higher, and in the direction perpendicular to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L11/24C08L101/00C08L77/10C08L67/00C08L23/06C08K7/14C08K7/06C08K7/04B29C53/60B29C45/77B29C45/78
CPCB29C45/77B29C45/78B29C53/581B29C53/60B29C2945/76498B29C2945/76531C08K7/14C08L101/00C08L2205/03C08L2205/035C08L2205/16F16L11/005F16L11/24C08L77/10C08L67/00C08L23/06C08K7/06C08K7/04
Inventor 黄险波陈大华李晓拓范欣愉孙雅杰徐光磊熊鑫蒲颖蔡华轮
Owner GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV