Continuous filament wound and reinforced thermoplastic pipe and manufacturing process thereof

Abstract

The invention relates to a pipeline structure used for transporting different media such as solid, liquid and gases and a manufacturing process thereof. A continuous filament wound and reinforced thermoplastic pipe is characterized in that a tubular pipeline liner layer, a pipeline structural layer and a pipeline outer protective layer are wound to manufacture a whole structure; the pipeline structural layer is positioned between the pipeline liner layer and the pipeline outer protective layer; the pipeline liner layer and the pipeline outer protective layer are made of thermoplastic plastics; and the pipeline structural layer is made of continuous filaments. The pipeline provided by the invention has better strength, rigidity, shock resistance, fracture toughness, temperature and corrosion resistance, seepage resistance and the like than the traditional thermoplastic or thermosetting pipelines, can be widely applied in the fields such as water supply and sewerage works, petrochemical industry, coal gas and natural gas transportation, seawater desalination and nuclear power and can be suitable for special environments and requirements such as heavy calibre, high rigidity, high strength and high corrosivity.

Description

technical field [0001] The invention relates to a pipeline structure for transporting various media and a manufacturing process thereof. Background technique [0002] Plastic pipes are divided into thermoplastic pipes and thermosetting plastic pipes. There are many types of thermoplastic pipes, such as PE pipes, PVC pipes, PP pipes, etc., and the typical representative of thermosetting pipes is glass fiber reinforced plastic pipes, commonly known as FRP, which is made of glass fiber reinforced thermosetting unsaturated polyester resin, epoxy resin, etc. made. [0003] These two pipes have their own advantages and disadvantages, and they both occupy a certain market share in the current market. The large-diameter high-pressure pipes are mainly thermosetting, and the small-diameter low-pressure pipes are mainly thermoplastic. Thermoplastic pipes have the characteristics of easy recycling, strong impact resistance, good fracture toughness, short molding cycle, and high produc...

AI Technical Summary

Problems solved by technology

Thermoplastic pipes have the characteristics of easy recycling, strong impact resistance, good fracture toughness, short molding cycle, and high production efficiency, but their strength and elastic modulus are low, and it is difficult to meet the requirements of large diameter, high stiffness, and high pressure; glass fiber reinforced Thermosetting pipes have high strength and high elastic modulus because of the long fiber winding reinforcement, which can adapt to the requirements of large diameter, high stiffness and high pressure, but there is certain pollution in the production process and it is difficult to recycle. Great impact on the environment, poor impact resistance

[0004] The current pipeline market only has fiber-reinforced thermosetting pipes but no fiber-reinforced thermoplastic pipes, because thermosetting resins have strong fluidity at room temperature, are easy to combine with glass fibers, and have good process performance, while thermosetting resins must be produced at high temperatures. It has a certain fluidity, it is difficult to directly combine with the fiber, and the process performance is poor

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