Soft mineral fireproof cable

A fireproof cable and mineral technology, applied in the direction of insulated cables, bendable cables, cables, etc., can solve the problems of high temperature resistance and poor fire resistance, and achieve the effect of improving toughness, simple process and improving power-on time.

Active Publication Date: 2019-03-26
四川省川胜电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of high temperature resistance and poor fire resistance in the existing fireproof cables, and provide a soft mineral fireproof cable

Method used

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0023] Such as figure 1 and figure 2 As shown, a soft mineral fireproof cable of this embodiment includes a filling layer 1, a grid 2, a cable core, a flexible protective layer 3, a second fireproof layer 4, a first fireproof layer 5, and a heat insulation layer 6, and sheath 7. Among them, such as figure 2 As shown, the cable core includes a plurality of flexible conductors 8 and an insulating layer 9 extruded on the flexible conductors 8 .

[0024] During implementation, the filling layer 1 is preferably composed of volcanic ash, phthalate ester and acrylic resin. When the filling layer 1 is made, the weight ratio of volcanic ash, phthalate ester and acrylic resin is 4:1.5:1. The volcanic ash and the phthalate are stirred and mixed at a temperature of 140°C for 10 minutes, and then cooled to form a ...

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Abstract

The invention discloses a soft mineral fireproof cable comprising a filling layer (1), gratings (2) arranged in the filling layer (1), cable cores arranged in the gratings (2), a flexible protection layer (3) extruding and coating the filling layer (1), a second fireproof layer (4) extruded on the flexible protection layer (3), a first fireproof layer (5) extruded on the second fireproof layer (4), a heat insulating layer (6) extruded on the first fireproof layer (5), and a sheath (7) extruded on the heat insulating layer (6). The process is simple and the production efficiency is high. The obtained high-flexibility fireproof cable has advantages of high flexibility and good fire-resistant performance. The filling layer is made of a material formed by synthesis of volcanic ash, phthalic acid ester and acrylic resin, so that the cable cores are protected from being damaged; and the short-circuit phenomenon among the four cable cores is prevented by the grids at a temperature of 1300 DEGC even when the insulating layers of the cable cores fails to carry out insulation after certain time, so that the cable cores electrified normally.

Description

technical field [0001] The invention relates to a fireproof cable, in particular to a soft mineral fireproof cable. Background technique [0002] Fire-resistant cables are fire-resistant cables that are widely used at this stage, mainly including UL series flame-retardant cables and flame-retardant low-smoke halogen-free cables. Mineral fireproof cable is the most widely used flame-retardant low-smoke halogen-free cable. Mineral fireproof cable is composed of copper strands, mineral compound insulation, and mineral compound sheath. It has fire resistance, large carrying capacity, Impact voltage resistance, mechanical damage resistance, halogen-free and non-toxic, explosion-proof, waterproof, corrosion resistance, long life, safety, overload resistance, high temperature resistance, and low cost. [0003] At present, the continuous working temperature of fireproof cables used in my country is 250°C, and the continuous power supply can last for 90 minutes (E90) at 950°C-1000°C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/04H01B7/17H01B7/28H01B7/29H01B7/295
CPCH01B7/04H01B7/17H01B7/28H01B7/29H01B7/295
Inventor 刘思明王镇川
Owner 四川省川胜电缆有限公司
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