CN2779563Y - Fire resistance wire - Google Patents
Fire resistance wire Download PDFInfo
- Publication number
- CN2779563Y CN2779563Y CN 200520055440 CN200520055440U CN2779563Y CN 2779563 Y CN2779563 Y CN 2779563Y CN 200520055440 CN200520055440 CN 200520055440 CN 200520055440 U CN200520055440 U CN 200520055440U CN 2779563 Y CN2779563 Y CN 2779563Y
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- China
- Prior art keywords
- fire
- inorganic compound
- sintered inorganic
- layer
- resistant wires
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Abstract
The utility model relates to a fireproof wire, which comprises a conductor layer, a fireproof layer containing micas, an insulating layer and a protecting layer arranged orderly from inside to outside, wherein an inorganic compound layer which can be sintered is arranged between the conductor layer and the insulating layer. The fireproof wire of the utility model has good performance such as high temperature resistance, water showering resistance and mechanical impact resistance.
Description
Technical field
The utility model relates to a kind of fire-resistant wires.
Background technology
Fire-resistant wires is the cable that still can keep the normal operation of certain hour when fire burns, and it is widely used in the fire-fighting of enterprises such as megastore, skyscraper, underground railway and boats and ships, aviation, oil, chemical industry and Emergency Power system.
The feature that the fire-resisting cable electric wire is different from fireproof cable (also claiming mineral cable or Mi type cable) is that its insulating barrier and sheath are the organic substance resins, and its fire resistance mainly relies on the flame retardant coating in the structure, and flame retardant coating mainly is made up of fire-resistant isinglass belt.
Traditional fire-resistant isinglass belt is with certain thickness mica paper with supporting material is bonding makes with high-temperature-resistant adhesive.Main refractory insulating material in the fire-resistant isinglass belt is a mica paper.The fire-resistance property of different mica paper is different, begins to decompose 650 ℃ the time as natural muscovite, and the thermal decomposition initial temperature of natural phlogopite is then at 850 ℃, and the heat decomposition temperature of synthetic mica paper is up to 1200 ℃.Because the refractory temperature of the fire-resistant isinglass belt made from different mica paper there are differences, also just be not quite similar so use the flame temperature that fire-resistant wire and cable that different fire-resistant isinglass belts make can bear.
Fire-resistant wire and cable is when meeting with fire, and except flame combustion can destroy insulating material, external mechanical impact, as the stone that falls down, plank and steel plate, and the injection of fire-fighting water column also can cause damage to electric wire.So the fire-resistant wire and cable of high request must be able to bear flame, mechanical impact, three kinds of destructive tests of water pouring, to guarantee that Emergency Power can stably use under the fire hazard environment of reality.
Above-mentioned traditional fire-resistant wires can only guarantee to keep normal power supply under the flame condition of certain hour, but can not drench at water, normally operation under the environment of mechanical impact.Trace it to its cause, be under flame condition, high temperature resistant binder can lose caking property, glass fabric has lost its mechanical strength, adhesion between the mica flake is quite loose, under water pouring condition, the insulation resistance of flame retardant coating sharply descends in the fire-resistant isinglass belt structure, can't keep the insulation resistance between line thereby short circuit occur.When mechanical impact occurring, the fire-resistant isinglass belt structure of burning quite loosely becomes looser and comes off, and also can't keep its insulating properties.
The utility model content
The purpose of this utility model provides a kind of fire-resistant wires, can form dense sintering body protective layer under flame condition on conductor, and is both high temperature resistant, water-fast again pouring and mechanical impact.
The technical solution of the utility model is: a kind of fire-resistant wires, comprise tactic from the inside to the outside conductor layer, the flame retardant coating that contains mica, insulating barrier and protective layer, and contain sintered inorganic compound layer between conductor layer and the insulating barrier.
Sintered inorganic compound is meant the additive that can form dense sintering body structure material under flame condition with mica paper, contains especially metal oxygen-containing compounds such as metal oxide, metal hydroxides, silicate, borate of metallic compound.Dense sintering body structure material is the same with the dense sintering body good insulation performance performance, hardness and water resistance, so water-fast pouring of energy and anti-mechanical impact, and can prevent that the organic substance that is carbonized from entering in fire-resistant isinglass belt and the conductor.Because common dense sintering body is mainly obtained through high-temperature calcination by multiple oxides such as silicon dioxide, metal oxides, and often contain silicon dioxide in the mica, glass fabric, adhesive, so as long as add sintered inorganic compounds such as magnesium oxide, aluminium hydroxide, boron nitride, when fire, fire-resistant isinglass belt is by heat, and contained sintered inorganic compound and mica paper, supporting material and binding agent just sinter the dense sintering body together into.Therefore flame proof electrical tape of the present utility model has the superperformance of high temperature resistant, water-fast pouring and anti-mechanical impact.
Described sintered inorganic compound preferable alloy oxygenatedchemicals, then effect is better especially to adopt magnesium hydroxide, aluminium hydroxide, magnesium oxide and aluminium oxide.
For making sintered inorganic compound be easy to infiltrate to make in the fire-resistant isinglass belt it to generate the dense sintering body fast when the fire, the granularity that can make sintered inorganic compound is below 50 μ m.
Sintered inorganic compound should reach certain consumption, is not less than 1 μ m with sintered inorganic compound layer thickness, or every square metre sintered inorganic compound consumption to be no less than 2g be good.
If sintered inorganic compound layer is added in the flame retardant coating, has then increased the contact area of sintered inorganic compound and mica, thereby accelerated to generate the speed of dense sintering body.
Description of drawings
Fig. 1 is the hierarchical diagram of fire-resistant wires;
Fig. 2 is the cut-away view of flame retardant coating.
Embodiment
Fig. 1 has provided the structure of the utility model fire-resistant wires, be followed successively by conductor layer 1, flame retardant coating 2, sintered inorganic compound layer 3, insulating barrier 4 and protective layer 5 from inside to outside: conductor layer 1 is used for conduction current, flame retardant coating 2 contains mica, and sintered inorganic compound layer 3 sticks on the mica of flame retardant coating 2; And insulating barrier 4 employing resins are material, and 5 of protective layers are one deck gum cover, are prior art.Sintered inorganic compound is mixed by magnesium hydroxide, aluminium hydroxide, magnesium oxide, aluminium oxide.
Another embodiment joins sintered inorganic compound layer 3 in the flame retardant coating 2 as shown in Figure 2.Existing flame retardant coating 2 is made of inter-adhesive mica paper 21 and supporting material 22, so can coat sintered inorganic compound layer 3 between mica paper 21 and supporting material 22.
Described sintered inorganic compound also can adopt other suitable materials, as boron nitride, magnesium sulfate, barium borate, zinc hydroxide, zinc oxide, carborundum, magnesium chloride, white mica powder, but and the natural minerals that contains the metal oxide component of dense sintering bodyization, as clay, kaolin, talcum, serpentine etc.
The granularity of sintered inorganic compound layer 3 contained sintered inorganic compounds is below 50 μ m, sintered like this inorganic compound particles can partly infiltrate in the flame retardant coating 2, during fire, fully the mica and the sintered inorganic compound of contact just can generate the dense sintering body rapidly.
The thickness of sintered inorganic compound layer 3 is to be not less than 1 μ m, and every square metre sintered inorganic compound consumption is no less than 2g is advisable, and can reach preferable effect when sintered inorganic compound consumption is every square metre of 5g.Above-mentioned fire-resistant wires burns under 950 ℃ of flames and still keeps insulation in 3 hours, and water-fast therebetween pouring performance and anti-mechanical impact performance all reach Britain BS6387 standard and International Power IEC60331-31 standard.
Claims (9)
1. fire-resistant wires comprises tactic from the inside to the outside conductor layer (1), contains flame retardant coating (2), insulating barrier (4) and the protective layer (5) of mica, it is characterized in that, contains sintered inorganic compound layer (3) between conductor layer (1) and the insulating barrier (4).
2. fire-resistant wires according to claim 1 is characterized in that, described sintered inorganic compound adopts the metal oxygen-containing compound.
3. fire-resistant wires according to claim 2 is characterized in that, described sintered inorganic compound adopts the oxygenatedchemicals of magnesium or aluminium.
4. fire-resistant wires according to claim 3 is characterized in that, described sintered inorganic compound adopts magnesium oxide or aluminium oxide.
5. fire-resistant wires according to claim 3 is characterized in that, described sintered inorganic compound adopts magnesium hydroxide or aluminium hydroxide.
6. fire-resistant wires according to claim 2 is characterized in that, described sintered inorganic compound adopts metal hydroxides.
7. fire-resistant wires according to claim 1 is characterized in that, the granularity of the contained sintered inorganic compound of sintered inorganic compound layer (3) is below 50 μ m.
8. fire-resistant wires according to claim 1 is characterized in that, the thickness of sintered inorganic compound layer (3) is not less than 1 μ m, or every square metre sintered inorganic compound consumption is no less than 2g.
9. fire-resistant wires according to claim 1 is characterized in that, sintered inorganic compound layer (3) is positioned at flame retardant coating (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055440 CN2779563Y (en) | 2005-03-10 | 2005-03-10 | Fire resistance wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055440 CN2779563Y (en) | 2005-03-10 | 2005-03-10 | Fire resistance wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2779563Y true CN2779563Y (en) | 2006-05-10 |
Family
ID=36753649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520055440 Expired - Lifetime CN2779563Y (en) | 2005-03-10 | 2005-03-10 | Fire resistance wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2779563Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761800A (en) * | 2016-04-11 | 2016-07-13 | 尚成荣 | Multilayer protection sleeve electrode wire stretch-resistant wire cable and manufacture technology therefor |
-
2005
- 2005-03-10 CN CN 200520055440 patent/CN2779563Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761800A (en) * | 2016-04-11 | 2016-07-13 | 尚成荣 | Multilayer protection sleeve electrode wire stretch-resistant wire cable and manufacture technology therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150310 Granted publication date: 20060510 |