Continuous-fiber-enhanced thermoplastic resin wound pipe and method for forming same

A technology for reinforcing thermoplastic and continuous fibers, applied in rigid pipes, pipes, pipes/pipe joints/fittings, etc., can solve the problems of difficult preparation technology, no substantial progress, difficult hardness, etc., and achieve short molding cycle, light weight, The effect of good impact resistance

Active Publication Date: 2013-10-23
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Continuous fiber-reinforced thermosetting resin composites (commonly known as FRP) are easy to realize winding, which is also the main application field of winding technology at present, while the winding molding of continuous fiber-reinforced thermoplastic resin composites is difficult due to the prepara...

Method used

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  • Continuous-fiber-enhanced thermoplastic resin wound pipe and method for forming same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take continuous glass fiber reinforced polypropylene prepreg tape as raw material, first process the prepreg tape into a strip with a width of 30 mm, coil it on the unwinding device, and then pull the prepreg tape through the guide roller and tension control device To the top of the winding mandrel, the winding equipment adopts a self-designed three-axis linkage CNC winding machine. The heating method adopts combined use of infrared light box heating and hot air gun. The infrared light box heating is a pre-heating process. Winding speed, the heating temperature used is 300°C, and then heated by a heat gun. The heating position is at the contact joint between the prepreg tape and the winding mandrel. The heating temperature is to make the surface temperature of the prepreg tape 180°C. During the winding process, the pressure roller Apply 0.1MPa pressure. The winding speed was 5 m / min. Cross winding 10 layers of prepreg tape, the shape of the winding tube is round. Aft...

Embodiment 2

[0031] Take continuous glass fiber reinforced polyethylene prepreg tape as raw material, first process the prepreg tape into a strip with a width of 30 mm, coil it on the unwinding device, and then pull the prepreg tape through the guide roller and tension control device To the top of the winding mandrel, the winding equipment adopts a self-designed three-axis linkage CNC winding machine. The heating method adopts combined use of infrared light box heating and hot air gun. The infrared light box heating is a pre-heating process. Winding speed, the heating temperature used is 280°C, and then heated by a heat gun, the heating position is at the contact joint between the prepreg tape and the winding mandrel, and the heating temperature is to keep the surface temperature of the prepreg tape at 150°C. The winding speed was 5 m / min. Cross winding 10 layers of prepreg tape, the shape of the winding tube is round. After the winding is completed, heat the pipe surface at 280°C and ap...

Embodiment 3

[0033] A continuous fiber reinforced thermoplastic resin winding pipe forming method, comprising the following steps:

[0034] (1) Use infrared ceramics to heat the fiber-reinforced resin prepreg sheet, the fiber in the sheet is carbon fiber, and melt the polymethyl methacrylate resin in the prepreg sheet to soften the entire prepreg sheet , the prepreg sheet used can use the prepreg material produced by Liaoning Jieshijie New Material Co., Ltd.;

[0035] (2) Apply tension to the prepreg tape after heating, so that the prepreg tape is tensioned under the action of tension, and wind ten layers on the circular winding mandrel at a winding angle of 70°, and the number of winding layers is based on the Depending on the requirements of the pipe pressure;

[0036] (3) During the winding process, apply a pressure of 0.1MPa on the surface of the pipe by the pressure roller to increase the bonding strength of the pipe;

[0037] (4) After the winding is completed, heat the surface of ...

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Abstract

The invention relates to a continuous-fiber-enhanced thermoplastic resin wound pipe and a method for forming the same. The pipe is characterized in that prepreg tape sheets are wound on the surface of a core mold in a crossed manner to form a plurality of layers, the layers are rolled, and the hollow pipe is acquired after the core mold is removed. The method includes applying certain tension on prepreg tapes; heating the prepreg tape sheets to melt resin in the prepreg tape sheets; winding the prepreg tape sheets on a mandrel to for the multiple layers; applying pressure on the surface of a pipe via a pressure roll; reducing gaps among the prepreg tapes; heating the surface of the wound pipe at a high temperature; applying pressure to the surface of the pipe via the pressure roll again; improving the flatness of the surface of the wound product and reducing gaps in the wound product; cooling the wound product and removing the mold. The continuous-fiber-enhanced thermoplastic resin wound pipe and the method have the advantages that the pipe is high in impact resistance and corrosion resistant and short in forming cycle, and is light, environmental friendly and recyclable, most wound products in existing markets are made of thermosetting materials, namely glass fiber reinforced plastic wound products, thermoplastic wound pipes are unavailable for application at present, accordingly the pipe is quite wide in future application prospect, and the like.

Description

technical field [0001] The invention relates to a pipe and its forming method, in particular to a continuous fiber reinforced thermoplastic resin winding pipe forming method. Background technique [0002] Most of the existing continuous fiber reinforced resin winding products are FRP, and the resins used in FRP are all thermosetting resins (such as epoxy resin, unsaturated resin, etc.). The biggest disadvantage of FRP materials is that the use of thermosetting resins makes them difficult to recycle, not environmentally friendly, brittle and poor in impact resistance. Therefore, replacing thermosetting materials with thermoplastic materials is a trend in today's society that requires environmental protection. [0003] Winding molding is a material forming process in composite materials, which is mainly used for the preparation of pipes, etc. The product has excellent strength and other properties, so it has attracted much attention. Continuous fiber-reinforced thermosetting...

Claims

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Application Information

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IPC IPC(8): F16L9/16B29C53/58B29C53/80
Inventor 徐龙彬
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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