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Steel wire reinforced polytetrafluoroethylene spiral tube component and processing method thereof

A technology of polytetrafluoroethylene spiral and polytetrafluoroethylene, which is applied in the field of steel wire reinforced polytetrafluoroethylene spiral pipe components and its processing, can solve the problems of poor bending performance, heavy weight, temperature resistance, aging resistance, etc. problem, to achieve the effect of excellent performance and light weight

Active Publication Date: 2010-04-14
SHANGHAI PLASTICS RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the metal tube assembly has the characteristics of high and low temperature resistance, its shortcomings of heavy weight and non-distortion performance make its application limited. Similarly, PTFE hose assemblies have the disadvantages of heavy weight and poor bending performance.
Other engineering plastics, such as polyvinyl chloride, polyethylene and other hose components, are also subject to considerable restrictions in the aerospace field due to their poor performance in temperature resistance and aging resistance.

Method used

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  • Steel wire reinforced polytetrafluoroethylene spiral tube component and processing method thereof
  • Steel wire reinforced polytetrafluoroethylene spiral tube component and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The processing method of the polytetrafluoroethylene spiral tube assembly with an inner diameter specification of φ10mm, the specific steps are:

[0030] (1) PTFE straight tube forming.

[0031] (a) Heat the mandrel to 275°C--285°C.

[0032] (b) Put the straight PTFE tube into a mandrel whose size is the same as the inner diameter of the straight PTFE tube. (uncertain concept)

[0033] (c) Start the forward key of the PTFE spiral tube forming equipment, so that the PTFE straight blank tube and the mandrel rotate together, enter the mandrel of the corresponding specification, and twist together to form a spiral shape;

[0034] (d) When the mandrel with the blank tube rotates in the mandrel to the end of the mandrel, press the stop key.

[0035] (e) Press and hold the straight blank tube at the rear section of the spiral tube, press the back button, and press the straight blank tube to prevent it from rotating with the mandrel, so that when the mandrel retreats to the ...

Embodiment 2

[0048] The processing method of the polytetrafluoroethylene spiral pipe assembly with an inner diameter specification of φ16mm, the specific steps are: (1) Forming the polytetrafluoroethylene straight billet pipe.

[0049] (a) Heat the mandrel to 275°C--285°C.

[0050] (b) Put the straight PTFE tube into a mandrel whose size is the same as the inner diameter of the straight PTFE tube.

[0051] (c) Start the forward key of the PTFE spiral tube forming equipment, so that the PTFE straight blank tube and the mandrel rotate together, enter the mandrel of the corresponding specification, and twist together to form a spiral shape;

[0052] (d) When the mandrel with the blank tube rotates in the mandrel to the end of the mandrel, press the stop key.

[0053] (e) Press and hold the straight blank tube at the rear section of the spiral tube, press the back button, and press the straight blank tube to prevent it from rotating with the mandrel, so that when the mandrel retreats to the h...

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Abstract

The invention relates to a polytetrafluoroethylene spiral tube component, in particular to a steel wire reinforced polytetrafluoroethylene spiral tube component and a processing method thereof. The polytetrafluoroethylene spiral tube component is formed by assembling stainless metal connecting pieces at two ends of a sinusoidal spiral tube, and wrapping a reinforced jacket of stainless steel wire at the outer layer. The preparation method comprises the following steps: the polytetrafluoroethylene resin is pushed, pressed and sintered into polytetrafluoroethylene straight blank tubes, and then the polytetrafluoroethylene straight blank tubes are prepared into the polytetrafluoroethylene spiral tube component through forming, end recovery, nesting cutting, wrapping the reinforced jacket of stainless steel wire and head assembly. The prepared polytetrafluoroethylene spiral tube component is characterized by high-temperature resistance and low-temperature resistance, corrosion resistance, ageing resistance, light weight, excellent bending performance and the like, and is an ideal protective tube for wires and cables used for aero-spacecrafts and aircrafts.

Description

technical field [0001] The invention relates to a polytetrafluoroethylene spiral pipe assembly, in particular to a steel wire reinforced polytetrafluoroethylene spiral pipe assembly and a processing method thereof. Background technique [0002] At present, metal pipe assemblies, polytetrafluoroethylene or other engineering plastic hose assemblies have been used for connecting and protecting pipelines of lines such as electric wires and cables. As a protective pipeline for aerospace and aviation aircraft wires and cables, it should have the characteristics of high and low temperature resistance, corrosion resistance, aging resistance, light weight and excellent bending performance. Although the metal tube assembly has the characteristics of high and low temperature resistance, its shortcomings of heavy weight and non-distortion performance make its application limited. Similarly, PTFE hose assemblies have the disadvantages of heavy weight and poor bending performance. Other ...

Claims

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Application Information

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IPC IPC(8): F16L11/115
Inventor 邵漫江
Owner SHANGHAI PLASTICS RES INST CO LTD
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