Flexible mineral insulating fireproof cable

Abstract

The invention discloses a flexible mineral insulating fireproof cable. The flexible mineral insulating fireproof cable comprises a cable core and a sheath layer which wraps the outer side of the cable core. The sheath layer comprises the following raw materials in parts by weight: a base material 80-90 parts, a vulcanization system 2.2-2.9 parts, vinyl-terminated polydimethylsiloxane 1-2 parts, a composite filling material 40-70 parts, dibutyl tin dilaurate 0.5-1.5 parts, epoxy cotton seed butyl oleate 1-3 parts, phenyl petroleum sulfonate 1-2 parts, bis(pentaerythritolester) 1-2 parts, magnesium stearate 0.4-0.9 part, zinc stearate 0.15-0.78 part, an antioxidant 1076 0.4-1 part, 2,2'-thio bis[3-(3,5-di-t-butyl-4-hydroxy phenyl) propionate] 0.15-0.75 part, and diester thiodipropionate 1-2 parts. The flexible mineral insulating fireproof cable is good in thermal stability and excellent in tearing resistance, abrasion resistance and compression resistance, and is quite good in ageing resistance in an extreme environment, high in safety performance and long in shelf life.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a flexible mineral insulated fireproof cable. Background technique [0002] With the continuous development of society, while the social wealth is increasing, the risk of fire is also increasing, and the danger of fire is also increasing. According to statistics, the average annual fire loss in my country in the 1970s was less than 250 million yuan, and the average annual fire loss in the 1980s was less than 320 million yuan. In the 1990s, especially since 1993, the direct property losses caused by fires have risen to an average of more than one billion yuan per year. According to China's fire statistics, in 2016, 395,000 fires were reported across the country, 1,817 people were killed, 1,493 people were injured, and the direct property loss reached 4.39 billion yuan. From the statistical data, electrical fires accounted for 36.9% of the fires, resulting in 58.6% of economic los...

AI Technical Summary

Problems solved by technology

Due to the defects in reliability, production and laying of rigid mineral insulated cables, rigid mineral insulated cables are gradually withdrawn from the market in developed countries in Europe and the United States. Flexible mineral insulated fireproof cables have become mainstream cable products in the field of fire protection, but flexible mineral insulated fireproof cables The tear resistance, wear resistance and compression resistance of the cable can not meet the demand, and it needs to be solved urgently