Fireproof and flame-retardant multi-layer composite cable and preparation method thereof

A multi-layer composite, fire-resistant and flame-retardant technology, which is applied in the field of power cables, can solve problems such as potential safety hazards in use, and achieve the effects of improving safety in use, simple assembly and manufacturing, and ensuring fire-resistant and flame-retardant protection

Pending Publication Date: 2022-06-07
WUXI SHUGUANG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the vast majority of the existing fire-resistant cables are designed with a highly airtight structure to achieve the effect of fire-resistant and flame-retardant, it is easy to cause safety hazards in use when the fire-resistant cables are overloaded and heated; at the same time, the existing fire-resistant cables The fire-resistant and flame-retardant effect still needs to be improved, so as to enhance the use effect of fire-resistant cables in working environments with high fire-resistant requirements. Therefore, a new type of fire-resistant and flame-retardant cable is needed to solve the above technical problems

Method used

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  • Fireproof and flame-retardant multi-layer composite cable and preparation method thereof
  • Fireproof and flame-retardant multi-layer composite cable and preparation method thereof
  • Fireproof and flame-retardant multi-layer composite cable and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] like figure 1 As shown in the figure, a fire-resistant and flame-retardant multilayer composite cable includes three insulating cable cores 1. On the outside of the insulating cable cores 1 from inside to outside, there are sequentially arranged cables that wrap all the insulating cable cores 1 and are used to support the inner layer structure of the cable. The first support shielding layer 2, the splicing type fireproof layer 3 that wraps the first supporting shielding layer 2, the second supporting shielding layer 4 that wraps the splicing type fireproof layer 3 and is used to support the outer structure of the cable, wraps the second supporting shielding layer 4. 2. The flame-retardant layer 5 supporting the shielding layer 4 and the outer sheath 6 wrapping the flame-retardant layer 5 and used to prevent cable abrasion;

[0038] like image 3 , 4 As shown, the splicing type fireproof layer 3 includes arc-shaped outer sheets 31 distributed at equal intervals in the ...

Embodiment 2

[0051] This embodiment is basically the same as Embodiment 1, except that the end face of the arc-shaped inner sheet 32 ​​of each segment of the splicing type fireproof layer 3 is bonded to the arc-shaped inner sheet 32 ​​of the adjacent splicing type fireproof layer 3 Through the above-mentioned arrangement, the manufacturing difficulty of the arc-shaped outer sheet 31 and the arc-shaped inner sheet 32 ​​can be reduced, but the splicing type fireproof layer 3 after bonding is not easy to bend, etc.

Embodiment 3

[0053] This embodiment is basically the same as Example 1, except that 5 parts of aluminum sulfate octadecahydrate, 3 parts of calcium carbonate and 6 parts of base material are selected according to the parts by mass, and then aluminum sulfate octadecahydrate, calcium carbonate are selected. Pressed into microspheres with a particle size of 2 mm, respectively, to obtain aluminum sulfate octadecahydrate microspheres and calcium carbonate microspheres.

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Abstract

The invention discloses a fire-resistant and flame-retardant multilayer composite cable and a preparation method thereof, the fire-resistant and flame-retardant multilayer composite cable comprises one or more insulating cable cores, a first supporting shielding layer wrapping all the insulating cable cores and used for supporting the inner layer structure of the cable, a splicing type fire-resistant layer wrapping the first supporting shielding layer, and a second supporting shielding layer wrapping the splicing type fire-resistant layer from inside to outside are arranged outside the insulating cable cores in sequence from inside to outside; the second supporting shielding layer wraps the splicing type fireproof layer and is used for supporting the outer layer structure of the cable; the flame-retardant layer wraps the second supporting shielding layer; and the outer protection layer wraps the flame-retardant layer and is used for preventing the cable from being worn. Through the multi-layer composite design of the spliced fireproof layer, the first supporting shielding layer, the second supporting shielding layer, the flame-retardant layer and the outer protective layer, the multi-layer composite cable is simple to assemble and manufacture, and the fireproof and flame-retardant performance of the multi-layer composite cable can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a fire-resistant and flame-retardant multilayer composite cable and a preparation method thereof. Background technique [0002] Fire-resistant cables refer to cables that can maintain safe operation for a certain period of time under the condition of flame combustion. Fire-resistant cables are widely used in high-rise buildings, subways, underground streets, large power stations and important industrial and mining enterprises and other places related to fire safety and fire protection. [0003] Ordinary fire-resistant cables are divided into Class A and Class B: Class B cables can withstand burning for at least 90 minutes in a flame at 750 ° C ~ 800 ° C and rated voltage without the cable being broken down. On the basis of improving the manufacturing process of the refractory layer and adding the refractory layer, a class A fire-resistant cable has been developed. It can wi...

Claims

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Application Information

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IPC IPC(8): H01B7/29H01B7/295H01B7/04H01B7/18H01B7/42H01B9/02H01B13/00
CPCH01B7/29H01B7/295H01B7/421H01B7/04H01B7/18H01B9/024H01B13/00Y02A30/14
Inventor 谈志兵史波
Owner WUXI SHUGUANG CABLE
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