Low-smoke halogen-free heat-insulating fireproof cable material used for fire-resistant cable, and preparation method and application thereof

A technology of fire-resistant cables and fire-resistant cables, applied in the field of refractory materials, can solve problems such as lack of fire-proof effects, complicated laying operations, and large bending radius, and achieve good heat insulation and fire-proof effects, normal operation protection, and good processing performance.

Active Publication Date: 2016-07-27
SHANGHAI KAIBO SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The special equipment required for magnesium oxide mineral fire-resistant insulated cables is complicated in process, low in efficiency, high in production cost, and very large in investment, and can only be used for low-voltage fire-resistant cables; the bending radius is large; the laying operation is very complicated
The mica tape type fire-resistant cable needs special wrapping equipment, multi-l

Method used

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  • Low-smoke halogen-free heat-insulating fireproof cable material used for fire-resistant cable, and preparation method and application thereof
  • Low-smoke halogen-free heat-insulating fireproof cable material used for fire-resistant cable, and preparation method and application thereof
  • Low-smoke halogen-free heat-insulating fireproof cable material used for fire-resistant cable, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A low-smoke, halogen-free, heat-insulating and fire-resistant cable material for fire-resistant cables. The raw material components are: polyethylene, ethylene-vinyl acetate copolymer, zinc borate, boric anhydride, wollastonite, vinyl tris(β-methoxy Ethoxy) silane, maleic anhydride grafted polyethylene copolymer, stearic acid, antioxidant DLTP. Its specific formula is shown in Table 1, and the properties of the obtained low-smoke, halogen-free, heat-insulating and fire-resistant cable material for fire-resistant cables are shown in Table 5.

[0055] The preparation method is as follows: firstly graft polyethylene, ethylene-vinyl acetate copolymer, zinc borate, boric anhydride, wollastonite, vinyl tris(β-methoxyethoxy)silane, maleic anhydride to polyethylene The copolymer, stearic acid, and antioxidant DLTP are mixed and fed into the internal mixer for kneading. When the temperature of the material is 145-155°C, the material is discharged and fed into the single-screw or...

Embodiment 2

[0057] A low-smoke, halogen-free, heat-insulating and fire-resistant cable material for fire-resistant cables, the raw material components of which are the same as in Example 1. Its specific formula is shown in Table 1, and the properties of the obtained low-smoke, halogen-free, heat-insulating and fire-resistant cable material for fire-resistant cables are shown in Table 5.

[0058] Its preparation method is identical with embodiment 1.

[0059] Table 1

[0060]

[0061]

Embodiment 3

[0063] A low-smoke, halogen-free, heat-insulating and fire-resistant cable material for fire-resistant cables. The raw material components are: polyethylene, ethylene-vinyl acetate copolymer, ethylene-α-octene copolymer, glass powder, zinc borate, kaolin, silicon Limestone, Vinyl Tris(β-Methoxyethoxy) Silane, Maleic Anhydride Grafted Polyethylene Copolymer, Magnesium Stearate, Antioxidant 1010. Its specific formula is shown in Table 2, and the properties of the obtained low-smoke, halogen-free, heat-insulating and fire-resistant cable material for fire-resistant cables are shown in Table 5.

[0064] Its preparation method is identical with embodiment 1.

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Abstract

The invention relates to the field of refractory materials, specifically to a low-smoke halogen-free heat-insulating fireproof cable material used for a fire-resistant cable, and a preparation method and application thereof. The low-smoke halogen-free heat-insulating fireproof cable material provided by the invention comprises the following raw materials by weight: 55 to 90 parts of polyolefin resin, 110 to 160 parts of a functional filling material A, 50 to 95 parts of a functional filling material B, 0 to 7 parts of a flame retardant, 1 to 4 parts of a coupling agent, 8 to 25 parts of a compatibilizing agent, 1 to 5 parts of a lubricant and 0.2 to 2 parts of an antioxidant. The fireproof cable material provided by the invention has good processing performance; the whole preparation process comprises basic steps like batching, material mixing, extrusion granulation, drying and packaging; and the process is simple. The cable material has good flexibility and is convenient to install; during combustion under the flame with a temperature of 500 to 1000 DEG C, the cable material does not drip and can generate a hard shell; meanwhile, the cable material has small shrinkage ratio before and after combustion, so normal operation of internal circuit can be protected; and the cable material can be applied in a fire-resistant filling layer and a heat-insulating fireproof layer of the fire-resistant cable, and has good heat-insulating and fireproof effects.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a low-smoke, halogen-free, heat-insulating and fire-resistant cable material for fire-resistant cables, a preparation method and application thereof. Background technique [0002] In today's society, with the rapid development of economy and science and technology, people's quality of life has been significantly improved, and the protection of personal and property safety in fire is a major concern of people. Therefore, in high-rise buildings, hotels, public entertainment places, large supermarkets, hospitals In densely populated areas such as stations, airports, subways, rail transit, coal mines, and public transportation facilities, it is necessary to maintain the normal operation of power cables and communication signals; The importance of safety is more prominent. People have been constantly exploring and researching how to ensure the smooth flow of power and communicatio...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L23/16C08L51/06C08K13/02C08K5/3492C08K3/38C08K3/40C08K3/22C08K3/34C08K3/32B29C47/92H01B3/44B29C48/92
Inventor 王文君汪晓明周光斌
Owner SHANGHAI KAIBO SPECIAL CABLE FACTORY
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