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Anti-capillary cable and preparation method thereof

A capillary action, cable technology, applied in cable/conductor manufacturing, insulating cables, insulating conductors/cables, etc., can solve the problems affecting the normal trial of other components or components of the cable, achieve large-scale continuous industrial production, avoid equipment The effect of using failure problems and avoiding media contamination

Inactive Publication Date: 2020-06-02
SHANGHAI ELECTRIC CABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this kind of flexible cable is used in various medium environments, such as water or oil liquid environment, due to capillary factors, water or oil in the medium is easy to diffuse from one end of the cable to the other end along the capillary path, affecting Normal use of cables and other devices or components connected to them

Method used

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  • Anti-capillary cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The silicone resin in this example is polymethyl silicone resin, and the viscosity is not less than 12s when tested according to GB / T 1723-93 design at 25°C.

[0037] Tin-plated copper monofilament conductors are used, the conductors are passed through and immersed in silicone resin, and then stranded, and the excess silicone resin is removed through the mold, and the 19 stranded conductors are reeled after being baked at 175°C, and processed at 175°C The time can be determined according to specific needs, and it is specifically 10 minutes in this embodiment. Place the coiled stranded conductor in an oven at 200°C for 2 hours to fully cure the silicone resin;

[0038] The insulation is then applied through wire extrusion equipment. The insulating material is ethylene-tetrafluoroethylene (X-ETFE) crosslinked by radiation, the extrusion temperature is 260°C, and the insulation thickness is 0.2mm. The extruded cable is irradiated and crosslinked by an electron accelerator...

Embodiment 2

[0040] The epoxy resin in this embodiment adopts glycidyl ether epoxy resin, and its dynamic viscosity at 25°C is 500-1000mPa. s, the glass transition temperature after curing is 250°C to 280°C.

[0041] Silver-plated copper monofilament conductors are used, 19 conductors are stranded after being passed through epoxy resin, and the stranded conductors are pultruded through a 180°C forming die, and cross-linked and vulcanized for 3 hours after adding a 200°C hot oven to achieve sufficient degree of solidification, and finally cooling and winding;

[0042] Then the insulation layer is covered by wire extrusion equipment. The raw material component in the insulation layer is polyphenylene sulfide, the extrusion temperature is 300°C, and the insulation thickness is 0.3mm.

Embodiment 3

[0044] The dynamic viscosity of the liquid silicone rubber in this example is 6000-8000mPa at 25°C. s.

[0045] Tin-plated copper monofilament conductors are used, and the sealing material is conductive liquid silicone rubber with graphene added. The amount of graphene added is 20wt% of the total weight of the sealing material layer, and 19 conductors are passed through the raw material components of the conductive liquid silicone rubber sealing material. After stranding, excess conductive liquid silicone rubber is removed by passing through the mold, and the twisted conductor is wound up after being baked at 175°C. Place the coiled stranded conductor in an oven at 200°C for 2 hours to fully vulcanize the conductive liquid silicone rubber.

[0046] Then the insulating layer is covered by wire extrusion equipment. The insulating material in the insulating layer is irradiated cross-linked ethylene-tetrafluoroethylene (X-ETFE). The extrusion temperature is 300°C and the insulati...

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Abstract

The invention provides an anti-capillary cable, which comprises a plurality of conductors and an insulating layer wrapping the outer layers of the plurality of conductors, and a sealing material is filled among the plurality of conductors and between the insulating layer and the conductors; the sealing material is prepared from one or more selected from organic silicon resin, liquid silicone rubber and epoxy resin. And the material of the insulating layer is one or more selected from a cross-linked polyolefin material, cross-linked fluoroplastic, silicone rubber, fluororubber and special engineering plastic. According to the technical scheme of the novel cable required to be protected in the application, large-scale industrial production of the cable can be realized; and on the basis thatthe weight and the diameter of the cable are not obviously increased, the anti-capillary effect of the cable can be realized, and the problems of medium pollution and equipment use failure caused by the capillary effect when the cable is soaked in a liquid medium for use are avoided.

Description

technical field [0001] The invention relates to a cable, in particular to an anti-capillary action cable and a preparation method thereof. Background technique [0002] For a common flexible cable, the cable core adopts a conductor structure in which multiple conductors are twisted, and there will inevitably be gaps between the conductor monofilaments and between the outer conductor and the cable insulation layer. If this kind of flexible cable is used in various medium environments, such as water or oil liquid environment, due to capillary factors, water or oil in the medium is easy to diffuse from one end of the cable to the other end along the capillary path, affecting Normal use of cables and other devices or components connected to them. Considering that the actual use scenario is that the wires pass through the transmission oil, the transmission oil temperature will rise for a short time. Considering that silicone has good high temperature resistance, the short-term t...

Claims

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Application Information

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IPC IPC(8): H01B7/285H01B13/32
CPCH01B7/285H01B13/32Y02A30/14
Inventor 严波张洪宇刘旌平洪宁宁
Owner SHANGHAI ELECTRIC CABLE RES INST
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