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Tubular product formed by winding thermoplastic fiber and forming process thereof

A thermoplastic fiber winding molding technology, which is applied to tubular objects, other household appliances, household appliances, etc., can solve the problems of working environment pollution, resin splashing, pipeline damage, etc., and achieve simple and easy operation process, short molding cycle, good Effect of Adhesive Properties

Active Publication Date: 2014-04-09
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the winding process of glass fiber impregnated with vinyl unsaturated resin or epoxy resin, due to the dripping of the resin when the reinforcing fiber passes through the impregnation tank, the centrifugal force causes the resin to splash when the mandrel rotates rapidly, and the small amount in the thermosetting resin The volatilization of molecular substances has caused great pollution to the working environment, and long-term exposure will cause great harm to the operators
At the same time, thermosetting resin is brittle and has poor impact resistance. In the installation and construction of some pipelines, the pipeline is easily damaged due to operator errors.
In addition, the non-recyclable nature of thermosetting resins will inevitably encounter bottlenecks in their future development

Method used

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  • Tubular product formed by winding thermoplastic fiber and forming process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The prepreg material used is a glass fiber / polypropylene prepreg strip with a glass fiber content of 50% processed into a width of 50mm. The thickness of the strip is 0.2mm. The number of layers is 14, and the diameter of the mandrel used is 150mm. Before the winding starts, the core mold infrared heater 4 is turned on to heat the core mold 5, and when the temperature of the core mold is raised to 140° C., the winding starts. Unwind the strip from the unwinding device 1, pull it to the mandrel 5 through the guide roller 8 and fix the end to prevent slipping due to the tension during the winding process. The prepreg tape 7 is preheated through the preheating infrared heater 2, and an infrared thermometer is used to measure the temperature of the prepreg tape 7 at the outlet of the preheating infrared heater 2. By adjusting the temperature and the winding speed of the preheating infrared heater 2, the The temperature was controlled at 130°C. When starting to wind the fi...

Embodiment 2

[0041] The prepreg material used is a glass fiber / polyethylene terephthalate prepreg tape with a width of 50mm and a glass fiber content of 50%. The thickness of the tape is 0.2mm. The entire winding process adopts hoop Winding, the winding angle is 85 degrees, the number of winding layers is 14 layers, and the diameter of the mandrel used is 150mm. Before the winding starts, the core mold infrared heater 4 is turned on to heat the core mold 5, and when the temperature of the core mold is raised to 140° C., the winding starts. Unwind the strip from the unwinding device 1, pull it to the mandrel 5 through the guide roller 8 and fix the end to prevent slipping due to the tension during the winding process. The prepreg tape 7 is preheated through the preheating infrared heater 2, and an infrared thermometer is used to measure the temperature of the prepreg tape 7 at the outlet of the preheating infrared heater 2. By adjusting the temperature and the winding speed of the preheatin...

Embodiment 3

[0043]The pre-impregnated material used is a carbon fiber / nylon pre-impregnated tape with a width of 70 mm and a carbon fiber content of 50%. The thickness of the tape is 0.2 mm. The number is 14 layers, and the diameter of the mandrel used is 150mm. Before the winding starts, the core mold infrared heater 4 is turned on to heat the core mold 5, and when the temperature of the core mold is raised to 160° C., the winding starts. Unwind the strip from the unwinding device 1, pull it to the mandrel 5 through the guide roller 8 and fix the end to prevent slipping due to the tension during the winding process. The prepreg tape 7 is preheated through the preheating infrared heater 2, and an infrared thermometer is used to measure the temperature of the prepreg tape 7 at the outlet of the preheating infrared heater 2. By adjusting the temperature and the winding speed of the preheating infrared heater 2, the The temperature is controlled at 150°C. When starting to wind the first 3 ...

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Abstract

The invention relates to a tubular product formed by winding thermoplastic fiber and a forming process thereof. The forming process includes extruding thermoplastic resin by an extruder and impregnating with continuous reinforced fiber to obtain a pre-impregnation sheet material, or compounding the reinforced fiber and thermoplastic fiber to obtain compound fiber yarn; subjecting the pre-impregnation material to unwinding, preheating and melting steps to remelt the pre-impregnation material and wind onto a core mould; and finally rolling, cooling to cure and demoulding. Compared with the prior art, the wound product has good adhesiveness and the product has advantages of high toughness, impact resistance, water-pressure resistance, capability of being recoverable, light weight, and the like. In addition, the process can optimize the working environment of employees.

Description

technical field [0001] The invention relates to a pipe material and its forming process, in particular to a thermoplastic fiber winding formed pipe material and its forming process. Background technique [0002] Filament winding technology is a very important molding process in composite material molding technology, and it is also a very widely used molding technology, such as in industrial water supply and drainage, oil pipelines, ventilation pipes, high-pressure vessels, corrosive liquid storage tanks, etc. [0003] At present, the fiber winding technology mainly uses glass fibers impregnated with low-viscosity vinyl unsaturated resins or thermosetting resins such as epoxy resins for winding and curing. During the winding process of glass fiber impregnated with vinyl unsaturated resin or epoxy resin, due to the dripping of the resin when the reinforcing fiber passes through the impregnation tank, the centrifugal force causes the resin to splash when the mandrel rotates rap...

Claims

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Application Information

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IPC IPC(8): B29C53/56B29L23/00
Inventor 徐龙彬
Owner HEFEI GENIUS NEW MATERIALS
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