Glass fiber-reinforced plastic composite pipe and machining method thereof

A processing method and glass fiber reinforced plastic technology, which is applied in the direction of pipes, pipe components, rigid pipes, etc., can solve the problems of inability to apply high-pressure fluids, increased energy consumption for fluid transportation, and low pressure resistance of the pipe wall, and achieves good fusion bonding effect. The effect of improving the tolerance and meeting the conveying requirements

Inactive Publication Date: 2019-04-16
安徽鹏远金属制品股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the overall strength of the existing glass steel pipe is low, and the pressure resistance of the pipe wall is low, so that it cannot be applied to the delivery of high-pressure fluid; further, when the traditional glass steel pipe is transporting high-pressure fluid, the friction of the inner wall The resistance will increase, so that the pressure drop of the pipe when transporting high-pressure fluid is too large, and the energy consumption of fluid transport will increase

Method used

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  • Glass fiber-reinforced plastic composite pipe and machining method thereof
  • Glass fiber-reinforced plastic composite pipe and machining method thereof
  • Glass fiber-reinforced plastic composite pipe and machining method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A method for processing a glass fiber reinforced plastic composite pipe, comprising the following steps:

[0040] (1) FRP is wound on the cylindrical inner mold to form an inner liner, and before winding, three first glass fiber tendons are evenly spaced along the circumferential direction of the cylindrical inner mold, and the first The length direction of the glass fiber reinforcement is consistent with the length direction of the cylindrical inner mold;

[0041] The ratio of the diameter of the first glass fiber reinforcement to the inner diameter of the FRP composite pipe to be formed is 1:15;

[0042] The winding thickness of the inner liner is 5mm;

[0043] (2) After the inner liner is cured, take off the cylindrical inner mold and put an outer mold on the outer side of the inner liner, the minimum distance between the outer mold and the inner liner is 5 mm;

[0044] pouring composite resin material into the cavity between the inner lining layer and the outer mo...

Embodiment 2

[0051] The processing method of the FRP composite pipe as provided in Example 1, the difference is that in step (1), four first glass fiber tendons are evenly spaced along the circumferential direction of the cylindrical inner mold; the rest remain unchanged, Processed by the processing method of Example 1 to obtain the FRP composite pipe.

[0052] The schematic diagram of the cross-section of the FRP composite pipe processed in this embodiment 2 is as follows figure 2 As shown, wherein, 10 is the first glass fiber reinforcement, 20 is the inner lining layer, 30 is the composite resin material layer, 40 is the second glass fiber reinforcement winding layer, and 50 is the outer protective layer.

Embodiment 3

[0054] The processing method of the FRP composite pipe as provided in Example 1, the difference is that in step (2), the composite resin material comprises the following raw materials by weight to make: 35 parts by weight of bisphenol A type epoxy resin, poly 5 parts by weight of amide, 5 parts by weight of polysulfide rubber, 2 parts by weight of silicon dioxide, 1 part by weight of talcum powder, 10 parts by weight of butyl acetate;

[0055] The rest remain unchanged, and the FRP composite pipe is obtained by processing according to the processing method of Example 1.

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Abstract

The invention belongs to the technical field of composite pipe machining, and particularly relates to a glass fiber-reinforced plastic composite pipe and a machining method thereof. The machining method comprises the steps that (1) glass fiber-reinforced plastic is arranged on a cylindrical inner mould in a winding mode to form an inner liner layer, and first glass fiber rebars are arranged in thecircumferential direction of the cylindrical inner mould at intervals before winding arranging is carried out; (2) the cylindrical inner mould is removed after the inner liner layer is solidified, and an outer mould sleeves the inner liner layer, and composite resin materials are poured in a cavity between the inner liner layer and the outer mould to form a structural layer; (3) the outer mould is removed, second glass fiber rebars are arranged outside the structural layer in a winding mode, and the second glass fiber rebars are enabled to have prestressing force due to the applying of the tension in the process of winding the second glass fiber rebars; and (4) outer protecting materials are coated to obtain the glass fiber-reinforced plastic composite pipe. According to the machining method, the resistant capacity of the pipe wall of the glass fiber-reinforced plastic composite pipe to inner high pressure fluid is improved, and thus the conveying requirements of the high pressure fluid are met.

Description

technical field [0001] The invention belongs to the technical field of composite pipe processing, and in particular relates to a glass fiber reinforced plastic composite pipe and a processing method thereof. Background technique [0002] Pipes are very common in daily life. Commonly used are water supply pipes, drain pipes, gas pipes, heating pipes, wire conduits, rainwater pipes, etc. With the development of technology, the development of pipes has experienced ordinary cast iron pipes, cement pipes, and ductile iron pipes. , galvanized steel pipe, plastic pipe and aluminum-plastic composite pipe, etc. Among them, glass steel pipes have been widely used in various fields due to their unique strong corrosion resistance, smooth inner surface, low energy consumption for transportation, and long service life. [0003] Traditional FRP pipes are made of glass fiber and its products as reinforcing materials, unsaturated resin, epoxy resin, etc. as basic materials, and inorganic no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/30B29C70/54B29C70/68F16L9/12F16L57/02F16L55/00B29L23/00
CPCB29C70/30B29C70/54B29C70/68B29L2023/22F16L9/123F16L55/00F16L57/02
Inventor 王诗斌
Owner 安徽鹏远金属制品股份有限公司
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