Thermoplastic continuous fiber preimpregnated board enhanced thermoplastic composite tube and manufacturing method thereof

Abstract

The invention relates to the field of loose or adhesive fibrous material enhanced high-molecular compounds, in particular to a thermoplastic continuous fiber preimpregnated board enhanced thermoplastic composite tube and a manufacturing method thereof. The thermoplastic continuous fiber preimpregnated board enhanced thermoplastic composite tube comprises a tube body (1), and is characterized in that the tube body (1) is formed by fusing three layers of a thermoplastic plastic inner layer film (1), a thermoplastic enhanced core layer tube (12) and a thermoplastic plastic surface layer film (13); and the thermoplastic enhanced core layer tube (12) is formed by a thermoplastic continuous fiber preimpregnated board coil tube. The thermoplastic continuous fiber preimpregnated board enhanced thermoplastic composite tube is simple in structure, convenient to manufacture, high in adaptability and high in mechanical performance.

Description

technical field [0001] The invention relates to the field of loose or adhered fibrous material-reinforced polymer compounds, in particular to a thermoplastic continuous fiber prepreg board-reinforced thermoplastic composite pipe and a manufacturing method thereof. Background technique [0002] Continuous glass fiber reinforced thermoplastic composite pipe has the advantages of high strength, thin wall, light weight, corrosion resistance, long life, etc., and is widely used in municipal water supply, heat pipe network, oil field gathering and transportation pipe network, chemical pipe network, natural gas transmission pipe network , powder slurry conveying pipe network, etc., the current production technology generally adopts the film-type thermoplastic glass fiber prepreg tape with a thickness of 0.3mm to 0.4mm, and the winding disc rotates to drive the prepreg tape to rotate and wrap the inner pipe. Heating at the side of the winding or heating in an overall oven after conc...

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Problems solved by technology

[0003] 1. As the diameter of the pipe increases or the pressure increases, the number of layers of prepreg tape required for winding increases to 20-50 layers or more, and 20-50 or more rotating winding discs are required for strip compounding, production The process is extremely complicated, too many winding machines and too long production lines are not easy to control, and the production rate of pipe products is low;

[0004] 2. During the winding process of the film-type prepreg tape wound in multiple layers, since the prepreg tape wound at each layer has various working winding discs to control the winding process, due to the influence of the precision difference between the equipment, it will cause various The uneven tension and angle difference of the prepreg tape between layers directly affect the quality of the reinforcement layer and the mechanical properties of the composite pipe;

[0005] 3. Due to the uneven or inappropriate heating and melting temperature of the film-type prepreg tape wound in multiple layers, it often causes the overall peeling or partial cracking between the reinforcing layers and affects the overall quality of the pipe;

[0006] 4. Multi-level heating and wrapping film type prepreg tape reinforcement layer, fully open communication with the air, large heat loss, large energy waste, and high production electricity costs;

[0007] 5. Multi-level heating and winding film-type prepreg tape reinforcement layer, due to the limitation of the winding disc, it is impossible to realize the winding of large-width prepreg tape, especially for pipes with a diameter greater than 800mm, the best winding angle close to 55° cannot be achieved , which seriously affects the axial stress resistance of the pipeline

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