Self-extinguishing low-smoke flame-retardant ceramic cable sheath material

Abstract

The invention discloses a self-extinguishing low-smoke flame-retardant ceramic cable sheath material. The self-extinguishing low-smoke flame-retardant ceramic cable sheath material is characterized bycomprising the following components in parts by weight: 25 to 30 parts of polyethylene, 60 to 70 parts of ethylene-vinyl acetate copolymer, 10 to 20 parts of EVM copolymer, 8 to 15 parts of calcium pyrophosphate, 1 to 5 parts of ultra-high molecular weight polysiloxane, 10 to 16 parts of micarex, 5 to 8 parts of talcum powder, 6 to 9 parts of spodumene, 10 to 12 parts of potassium feldspar, 10 to20 parts of melamine cyanurate, 5 to 15 parts of azodicarbonamide, 4 to 6 parts of sodium peroxide, 2 to 4 parts of mineral oil, and 3 to 5 parts of vegetable fat. The bending strength of a hard ceramic residue obtained after the ceramic cable sheath material is sintered is within a range of 0.3 to 9MPa, the mass retention of the hard ceramic residue obtained after burning can be within a range of 80 to 85 percent, and the size variation rate is within a range of 1 to 7 percent.

Description

technical field [0001] The invention relates to a high molecular polymer material, in particular to a self-extinguishing, low-smoke and flame-retardant ceramic cable sheath material. Background technique [0002] At present, high molecular polymer materials only have flame retardancy through modification, but have no fire resistance and fire resistance. Most of the flame-retardant polymers will turn into powdery ash after burning, especially in the case of high-temperature fire, dripping or falling off while burning, and cannot withstand spraying, vibration and high-temperature combustion; some flame-retardant High molecular polymers also have the phenomenon of flame delay and dripping, which will cause secondary fires; some flame retardant high molecular polymers will produce a large amount of toxic and harmful gases and dust during the combustion process, which will cause serious harm to the human body. Injury to death; domestic and foreign building residences, hospitals,...

AI Technical Summary

Problems solved by technology

Most of the flame-retardant polymers will turn into powdery ash after burning, especially in the case of high-temperature fire, dripping or falling off while burning, and cannot withstand spraying, vibration and high-temperature combustion; some flame-retardant High molecular polymers also have the phenomenon of flame delay and dripping, which will cause secondary fires; some flame retardant high molecular polymers will produce a large amount of toxic and harmful gases and dust during the combustion process, which will cause serious harm to the human body. Injury to death; domestic and foreign building residences, hospitals, shopping malls, theaters, entertainment venues, hotels, petroleum, chemical industry, coal mines, metallurgy, steel and other fires, automobile lines on fire, etc., are all related to the flame retardancy of polymer materials. , fire resistance, and fire resistance have a direct relationship

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