Mineral insulated fireproof cable with heat resistance of 1300 DEG C

A technology of mineral insulated and fireproof cables, applied in the direction of insulated cables, insulated conductors, cables, etc., can solve the problem that fireproof cables cannot adapt to new requirements, and achieve outstanding performance and application value, excellent fireproof performance, and long fire resistance effect.

Active Publication Date: 2016-10-26
沈阳北方艾克电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous acceleration of rural urbanization, the population is becoming denser and more concentrated, and there are many and taller buildings, people pay more and more attention to the fire safety of buildings, and the requirements for the technical performance level of fireproof cables for buildings are getting higher and higher. Traditional fireproof cables can no longer adapt to new requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: The composition formula of described mineral oxygen-barrier layer comprises: magnesia powder, wollastonite powder, mica powder, natron, quartz powder and perlite powder, wherein the composition ratio of each component is: magnesia powder 20 wt %, wollastonite powder 10 wt %, mica powder 10 wt %, natron 30 wt %, quartz powder 20 wt % and perlite powder 10 wt %.

[0021] The mesh number of the magnesium oxide powder is 1250, the mesh number of the wollastonite powder is 1000, the mesh number of the mica powder is 1250, the mass percent concentration of natron is 30%, the mesh number of the quartz powder is 1250 and the perlite The mesh number of the powder is 1250.

Embodiment 2

[0022] Embodiment 2: the composition formula of described mineral oxygen-barrier layer comprises: magnesium oxide powder, wollastonite powder, mica powder, natron, quartz powder and perlite powder, wherein the composition ratio of each component is: magnesium oxide powder 15wt %, wollastonite powder 8wt%, mica powder 8wt%, natron 35wt%, quartz powder 25wt% and perlite powder 9wt%.

[0023] The mesh number of the magnesium oxide powder is 1250, the mesh number of the wollastonite powder is 1000, the mesh number of the mica powder is 1250, the mass percent concentration of natron is 30%, the mesh number of the quartz powder is 1250 and the perlite The mesh number of the powder is 1250.

Embodiment 3

[0024] Embodiment 3: the composition formula of described mineral oxygen-barrier layer comprises: magnesium oxide powder, wollastonite powder, mica powder, natron, quartz powder and perlite powder, wherein the composition ratio of each component is: magnesium oxide powder 25wt %, wollastonite powder 8 wt%, mica powder 9wt%, natron 35 wt%, quartz powder 15 wt% and perlite powder 8 wt%.

[0025] The mesh number of the magnesium oxide powder is 1250, the mesh number of the wollastonite powder is 1000, the mesh number of the mica powder is 1250, the mass percent concentration of natron is 30%, the mesh number of the quartz powder is 1250 and the perlite The mesh number of the powder is 1250.

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PUM

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Abstract

The invention provides a mineral insulated fireproof cable with heat resistance of 1300 DEG C. The composition of the cable comprises a cable core, a cable core insulated sleeve, a metal sleeve, mineral oxygen insulating layers, a framework supporting layer, a heat insulating layer and a halogen-free sheath layer. The cable core insulated sleeve wraps the cable core. The cable core insulated sleeve is externally wrapped by the metal sleeve which is externally wrapped by the mineral oxygen insulating layer. The mineral oxygen insulating layer is externally wrapped by the framework supporting layer which is externally wrapped by the mineral oxygen insulating layer. The mineral oxygen insulating layer is externally wrapped by the heat insulating layer which is externally wrapped by the halogen-free sheath layer. The cable manufactured according to the composition and the formula has excellent fire resistance, and fire resistant temperature is more than 1300 DEG C and fire resistant time is long.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to a mineral insulated fireproof cable with a temperature resistance of 1300°C. Background technique [0002] With the continuous acceleration of rural urbanization, the population is becoming denser and more concentrated, and there are many and taller buildings, people pay more and more attention to the fire safety of buildings, and the requirements for the technical performance level of fireproof cables for buildings are getting higher and higher. Traditional fireproof cables can no longer meet the new requirements. At present, the basic fireproof performance of mineral insulated fireproof cable products produced in China is at 950°C to ensure the integrity of the line for 180 minutes, but the actual fire temperature is much higher than this temperature, and the flame temperature can reach 1300°C. Contents of the invention [0003] The present invention aims at the above problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/20H01B7/282H01B7/29H01B7/295
CPCY02A30/14H01B7/201H01B7/2825H01B7/29H01B7/292H01B7/295
Inventor 苏银玉吴长青刘多全张雪艳李颖
Owner 沈阳北方艾克电缆有限公司
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