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Plastic lined thermoplastic wound pipe and preparation method thereof

A winding pipe and thermoplastic technology, which is applied in the field of plastic-lined thermoplastic winding pipe and its preparation, can solve problems affecting the sealing of winding products, and achieve good bonding performance, high pipe strength, and good pipe sealing.

Inactive Publication Date: 2014-06-11
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the thermoplastic winding process, due to the high viscosity of the resin, the resin is prone to produce micropores during the melting process. If the continuous fiber is directly impregnated with thermoplastic resin prepreg tape for winding, there will be defects on the inner surface of the winding product, which will affect the quality of the entire winding product. tightness

Method used

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  • Plastic lined thermoplastic wound pipe and preparation method thereof
  • Plastic lined thermoplastic wound pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Use a polypropylene plastic pipe lining with an inner diameter of 100mm and a wall thickness of 1mm (generally, the wall thickness of the pipe is proportional to the pipe diameter). Sleeve it on the inflatable shaft of the winding machine, and inflate it tightly. The continuous glass fiber reinforced polypropylene prepreg tape (the mass percentage of glass fiber is 60%) is preheated by an infrared heater, and the temperature at the outlet of the infrared heater is 170 ℃ , 2 layers are wound circumferentially on the inner liner at a winding angle of 85°, and the rest are wound on the inner liner at 75°, with a total winding thickness of 2mm. An infrared heater is installed on the winding machine trolley to heat the core mold. The temperature can be controlled so that the prepreg tape wound on the mandrel is completely melted. After the winding is completed, the preheating infrared heater is turned off, and the infrared heater at the core mold is kept on, the heating temp...

Embodiment 2

[0030] Use a polyethylene plastic pipe lining with an inner diameter of 150mm and a wall thickness of 2mm (generally, the wall thickness of the pipe is proportional to the pipe diameter). Sleeve it on the inflatable shaft of the winding machine, and inflate it tightly. The continuous glass fiber reinforced polyethylene prepreg tape (the mass percentage of glass fiber is 60%) is preheated by an infrared heater. The temperature at the outlet of the infrared heater is 140 ° C, and the winding angle is 85 °. Winding 2 layers, the rest are wound on the inner liner tube at a winding angle of 65°, the winding thickness is 3mm, and an infrared heater is installed on the winding machine car to heat the core mold, and the heating temperature is controlled to make the prepreg wound on the core mold. The tape is completely melted. After the winding is completed, the preheating infrared heater is turned off, and the infrared heater at the core mold is kept on, and the heating temperature ...

Embodiment 3

[0032] Use the inner diameter of 200mm and the wall thickness of 5mm polypropylene plastic pipe lining (generally, the wall thickness of the pipe is proportional to the pipe diameter). Sleeve it on the inflatable shaft of the winding machine, and inflate it tightly. The continuous carbon fiber reinforced polypropylene prepreg tape (the mass percentage of carbon fiber is 60%) is preheated by an infrared heater, the temperature at the outlet of the infrared heater is 160 ° C, and the winding angle is 85 °. The rest are wound on the liner tube at a winding angle of 45°, with a winding thickness of 5mm. An infrared heater is installed on the winding machine trolley to heat the core mold, and the heating temperature is controlled so that the prepreg tape wound on the core mold is completely Just melt. After the winding is completed, the preheating infrared heater is turned off, and the infrared heater at the core mold is kept on, the heating temperature is lowered to the melting p...

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Abstract

The invention relates to a plastic lined thermoplastic wound pipe and a preparation method thereof. The pipe comprises a lining layer and a structural layer which are arranged orderly from inside to outside, wherein the lining layer is a plastic lining pipe and the structural layer is formed by wrapping a prepreg tape sheet around the lining layer and then rolling. The preparation method comprises the steps of nesting a rubber pipe in the plastic lining pipe and then fixing the plastic lining pipe with the rubber pipe on an air bulking shaft of a winding machine, unreeling and preheating the prepreg tape sheet and then wrapping the prepreg tape sheet around a core mold to which the plastic lining pipe sleeves, and heating the prepreg tape sheet in a molten state on the core mold, when the prepreg tape sheet is completely wrapped, rolling the pipe so that the layers of the prepreg tape sheet are more closely bonded together, and then exhausting air of the air bulking shaft, and demolding to obtain the plastic lined thermoplastic wound pipe. Compared with the prior art, the plastic lined thermoplastic wound pipe has the advantages of good interface bonding property of the structural layer and the lining layer, good airtightness of the pipe, high pipe strength and the like.

Description

technical field [0001] The invention relates to a thermoplastic winding pipe, in particular to a plastic-lined thermoplastic winding pipe and a preparation method thereof. Background technique [0002] Filament winding molding process is an important manufacturing process of resin matrix composite materials, and its products have excellent properties such as light weight and high strength. Winding molding is to make continuous reinforcing fibers into prepreg sheets by impregnating thermosetting or thermoplastic resins, and then winding them continuously, uniformly and regularly on the core mold or lining, and then curing to obtain the desired products. Winding products often have poor air-tightness and water-tightness, so inner linings need to be made before manufacturing winding products. The lining materials mainly include metal, plastic and rubber, etc. When using lining materials, there is the problem of interface bonding between the lining layer and the structural laye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/16B29C53/56
CPCF16L9/16B29C53/566
Inventor 徐龙彬
Owner HEFEI GENIUS NEW MATERIALS