Continuous large-diameter braided fiber reinforced thermosetting pultrusion pipeline and production method

Abstract

Belonging to the technical field of pipeline forming, the invention discloses a continuous large-diameter braided fiber reinforced thermosetting pultrusion pipeline and a production method. The pipeline comprises a mandrel, a braided layer, a winding layer, a gum dipping layer and an outer protective layer. The braided layer is distributed along the axial direction of the mandrel, the winding layer 3 is wound on the surface of the braided layer through a winding machine, the layer thickness does not exceed 3mm, and the winding layer is compounded with the outer protective layer through the gumdipping layer. By changing the form and the laying mode of the fiber reinforced material, the transverse strength of the pultrusion composite material is improved, meanwhile, uniform stress can be guaranteed to the winding layer and the braided layer fiber at the same time, and good internal pressure bearing performance is achieved. The pipeline prepared through the process has excellent performance and is suitable for large-batch production.

Description

technical field [0001] The invention discloses a continuous large-diameter braided fiber-reinforced thermosetting pultruded pipe and a production method thereof, specifically in the technical field of pipe forming. Background technique [0002] With the development of my country's economy, the safety requirements for municipal engineering, building water supply and drainage, power system, chemical industry, communication, and water conservancy irrigation are also increasing, so it is more important to choose a better pipeline. For a long time, transportation pipelines have been made of metal materials, such as steel pipes, iron pipes, etc. Traditional metal pipelines consume a lot of energy in the production process, have many processes, and in the actual use process are wet, dirty, and coastal salt. The shortcomings of metal conductivity, easy to rust, short service life, and high facility maintenance costs in harsh environments such as fog have gradually been eliminated an...

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Problems solved by technology

For a long time, transportation pipelines have been made of metal materials, such as steel pipes, iron pipes, etc. Traditional metal pipelines consume a lot of energy in the production process, have many processes, and in the actual use process are wet, dirty, and coastal salt. The shortcomings of metal conductivity, easy to rust, short service life, and high facility maintenance costs in harsh environments such as fog have gradually been eliminated and replaced by pipes of various new materials. Now the common ones on the market are pipes wound and formed by glass fiber reinforced plastic composite materials. Extruded PVC, PE, PP and other plastic pipes and various plastic corrugated pipes, as we all know, the pipes formed by winding FRP composite materials have low longitudinal strength and cumbersome process, and ordinary pultruded pipes have poor hoop strength, and The size of the pipe diameter is only limited within a certain range. Various single plastic pipes such as PVC have low rigidity, poor strength, short life, high brittleness and easy to break

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