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Enhanced electric melting repair strip and preparation method thereof

It is an electrothermal fusion and enhanced technology, which is applied in the direction of mechanical equipment, pipes/pipe joints/pipe fittings, pipe components, etc. It can solve the problems of inability to repair high-pressure pipelines and low tensile strength of repair tapes, so as to facilitate application promotion and popularization, The preparation method is simple and easy to operate, and the effect of improving the tensile strength

Active Publication Date: 2017-05-10
SHANDONG UNIV OF SCI & TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art, and propose to design an enhanced electric hot-melt repair tape and its preparation method, to overcome the defect that the existing electric hot-melt repair tape cannot repair high-pressure pipelines, and to solve the problem of the existing repair tape's tensile strength. low intensity problem

Method used

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  • Enhanced electric melting repair strip and preparation method thereof
  • Enhanced electric melting repair strip and preparation method thereof
  • Enhanced electric melting repair strip and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] The reinforced electric hot melt repair tape involved in this embodiment is a multi-layer composite structure, and its main structure includes: bottom plastic strip 1, upper plastic strip 2, conductive metal mesh 3, wire electrode 4, glass fiber composite strip 5 and slope structure 6; the bottom plastic strip 1 and the upper plastic strip 2 have the same structure, size and material, and the bottom plastic strip 1 and the upper plastic strip 2 are made of high-density polyethylene (HDPE) or low-density polyethylene (LDPE) and other thermoplastics are extruded into a strip structure with a certain thickness and width; a conductive metal mesh 3 is laid on the upper side of the bottom plastic strip 1, and one end of the conductive metal mesh 3 is connected to a wire electrode 4. 1 to 5 layers of glass fiber composite tape 5 are laid on the conductive metal mesh 3, the width of the conductive metal mesh 3 and the glass fiber composite tape 5 is the same, and the upper surfa...

Embodiment 2

[0035]The conductive metal mesh 3 has a width of 295mm, the glass fiber composite tape 5 has a width of 295mm and a thickness of 0.2mm, the temperature of the heater 9 is 150°C, the extrusion speed of the extruder 10 is 400r / min, the upper layer of plastic strip 2 and the bottom layer of plastic The thickness of the strip 1 is 0.2mm, the width is 310mm, the traction speed of the pressure roller 11 is 0.5m / min, and the reinforced electric hot-melt repair tape with a thickness of 1mm and a width of 310mm is obtained, and the enhanced electric hot-melt repair tape with a cutting length of 5000mm The repair tape is used to repair plastic pipes with a nominal outer diameter of 800mm and a nominal pressure of 1MPa.

Embodiment 3

[0037] The conductive metal mesh 3 has a width of 995mm, the glass fiber composite tape 5 has a width of 995mm and a thickness of 0.8mm, the temperature of the heater 9 is 200°C, the extrusion speed of the extruder 10 is 600r / min, the upper layer of plastic strip 2 and the bottom layer of plastic The thickness of the strip 1 is 0.4mm, the width is 1030mm, the traction speed of the pressure roller 11 is 1m / min, the reinforced electric hot melt repair tape with a thickness of 2mm and a width of 1030mm is obtained, and the enhanced electric hot melt repair tape with a cutting length of 6280mm The repair tape is used to repair plastic pipes with a nominal outer diameter of 1000mm and a nominal pressure of 0.8MPa.

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Abstract

The invention belongs to the technical field of pipeline repair and relates to an enhanced electric melting repair strip and a preparation method thereof. The strip comprises a bottom-layer plastic plate strip, an upper-layer plastic plate strip, a conductive metal net, a wire electrode, a glass fiber composite strip and end slopes; the conductive metal net is laid on the upper-side plate surface of the bottom-layer plastic plate strip; one end of the conductive metal net is connected with the wire electrode; the glass fiber composite strip is laid on the conductive metal net; the upper-layer plastic plate strip is laid on the upper surface of the glass fiber composite strip; and the two ends of the repair strip in the length direction adopt slope structures. The preparation method of the repair strip comprises five process steps of unwinding overlapping, heating, plate strip extrusion, press molding and fixed-length cutting. The glass fiber composite strip is added to the repair strip, the tensile strength is improved, and the strip can be applied to high-pressure pipelines; the slope structures at the ends are arranged, so that the strip is flat and free of gaps after being used; the repair strip is simple in structural design, convenient to use and wide to apply; and the preparation method of the repair strip is simple and easy to operate, convenient to apply and popularize and friendly to the application environment.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of pipeline repair, and relates to a reinforced electric hot-melt repair tape and a preparation method thereof, in particular to a continuous glass fiber composite tape reinforced electric hot-melt repair tape and a preparation method thereof. [0003] Background technique: [0004] The electric heating belt is a connecting pipe fitting made of plastic plates heat-sealed and embedded with a special electric heating wire mesh. When it is energized and connected, a molten substance can be formed between the electric heating belt and the pipe, and the molecules can penetrate each other. Diffusion, so it can form a firm combination after cooling, so the electric hot melt belt connection has the advantages of good sealing performance and firm connection parts, and is mainly used in the connection of urban underground sewage and rainwater discharge plastic pipes. Ordinary plastic electric melting belt is co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/168B29C69/00
CPCB29C48/0011B29C48/0022F16L55/1683
Inventor 王大鹏王庆昭秦升学孙岩张战欢陈建军石兵赵伟
Owner SHANDONG UNIV OF SCI & TECH