Continuous large-caliber woven fiber reinforced thermoset pultrusion pipeline and production method

Abstract

The invention relates to a continuous large-caliber woven fiber reinforced thermoset pultrusion pipeline and a production method. The pipeline is characterized in that the pipe is cylindrical, and the inner wall and the outer wall of the pipe adopt smooth surfaces; the inner diameter of the pipe is 20-400 mm; the size and the thickness of the pipe are determined according to design requirements; the pipe is formed by fiber layers woven by a plurality of long fibers; a layer of resin material is arranged on each fiber layer, and the fiber materials are formed through heat curing; each fiber layer is formed by multiple layers of fiber weaving layers. The production method comprises the following steps: adopting the multi-layer weaving process, winding process, continuous RTM gum dipping process and curing process, drawing and cutting to obtain the finished product. Compared with the prior art, the pipeline and the production method have the advantages that the advantages of light weight and high strength of the fiber composite material are played, the defects of circumferential strength and poor stiffness of a common composite material pultrusion pipeline are overcome, the problems that the fixed-length winding pipe is poor in longitudinal strength, more labor is needed, and the process is complicated are solved, the large-caliber fiber woven pipeline is formed by pultrusion on the condition that the die is fixed, the continuous production is realized, and the production efficiency is high.

Description

[technical field] [0001] The invention relates to the technical field of building water supply and drainage, sewage, optical fiber, cable, road and railway underground construction, water conservancy irrigation, chemical industry, mine fluid continuous large-diameter pipeline, in particular a braided fiber reinforced thermosetting pultrusion pipeline and production methods. [Background technique] [0002] With the development of our country's economy, the safety requirements for municipal engineering, building water supply and drainage, power system, chemical industry, communication, and irrigation are also increasing. Therefore, it is more important to choose a better pipeline. Materials, such as steel pipes, iron pipes, etc., due to the high energy consumption and many processes in the production process of traditional metal pipes, and the metal conductivity and easy to rust in harsh environments such as humidity, dirt, and coastal salt spray in actual use , Short life, h...

AI Technical Summary

Problems solved by technology

[0003] As we all know, the pipes wound and formed by FRP composite materials have low longitudinal strength and complicated process, and ordinary pultruded pipes have poor hoop strength, and the diameter of the pipes is limited to a certain range

Various single plastic pipes such as PVC have low rigidity, poor bottom strength, short life, high brittleness, and are easy to break

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