Continuous braided winding pultrusion high-strength composite glass steel tube and preparation method thereof

Abstract

The invention discloses a continuous braided winding pultrusion high-strength composite glass steel tube and a preparation method thereof. The composite glass steel tube is composed of fiber and thermosetting resin; the fiber is divided into five layers, the inner layer and the outer layer are braised by glass fiber, the secondary interlayer is wound by the glass fiber, and the glass fiber is longitudinally paved on the interlayer; the five layers of fiber and the thermosetting resin are composite to form a compact and complete pipeline structure; the pipeline structure is a circular solid-wall pipe; the thermosetting resin is unsaturated polyester resin; and the glass fiber is alkali-free glass fiber. The glass steel tube is composed of the fiber and the thermosetting resin, the five layers of fiber and the thermosetting resin are composite to form the compact and complete pipeline structure, and the strength of the glass steel tube can be improved; and meanwhile, a molecular structure of the thermosetting resin is in a body type, the thermosetting resin comprises most condensation resin, and the thermosetting resin can increase the heat resistance and the performance of difficultdeformation by being pressed of the glass steel tube.

Description

technical field [0001] The invention relates to the technical field of glass steel pipe production, in particular to a continuously braided, wound and pultruded high-strength composite glass steel pipe and a preparation method thereof. Background technique [0002] In recent decades, with the rapid development of my country's economy, glass steel pipes have been vigorously promoted in the fields of municipal engineering, power systems, chemical industry, communications, and drainage due to their excellent performance. Traditional FRP pipes are produced intermittently through a single mandrel, that is, fibers impregnated with resin are wound circumferentially on the mold. After winding, the FRP pipes are manually transferred multiple times to complete curing, demoulding, cutting, and trimming. This production method takes up a lot of space, and it is difficult to collect styrene and dust generated during winding, curing, demoulding, cutting and other processes. People, crowd...

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Problems solved by technology

This production method takes up a lot of space, and it is difficult to collect styrene and dust generated during winding, curing, demoulding, cutting and other processes. crowded, low efficiency

[0003] The patent No. CN104455793B discloses a continuous knitting composite drawn fiberglass steel pipe. A layer of knitted mesh is compounded on the inner and outer walls of the glass fiber reinforced plastic pipe to form a complete knitting cylinder, which can make the surface of the pipe get a balanced tension and effectively reduce cracks. It does not need the rewinding process in the fiber weaving process, and it can produce several kilometers of tubes before changing the line, which greatly improves the production efficiency, and the surface effect is beautiful; but this application is not convenient for different diameter types of glass steel pipes be cut, and the strength and heat resistance of the FRP pipe are poor

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