Highly flame-retardant environment friendly sheath material and co-axial cable composed thereof

Abstract

The invention provides a high fire-resistance environment-friendly sleeve material, which is prepared from the following substances in portion by weight: 100 portions of polyvinyl chloride, 20 to 25 portions of diisononyl phthalate, 15 to 20 portions of tributyl 2-acetylcitrate, 4 to 5 portions of a calcium-zinc complex stabilizing agent, 2 to 3 portions of epoxidized soybean oil, 1 to 2 portions of a lubricant, 8 to 10 portions of diantimony trioxide, 10 to 15 portions of zinc borate, 20 to 25 portions of activated light calcium carbonate, 8 to 10 portions of decabromodiphenyl oxide, and 2 portions of non-hydroscopic black carbon. The high fire-resistance environment-friendly sleeve material greatly improves fire resistance and hygroscopicity resistance of a product with strong practicality, establishes a raw material foundation for design and development of environment-friendly and flame retardant cables; and an environment-friendly CMR grade flame retardant coaxial cable integrated with environmental protection and high fire resistance is successfully developed based on the high fire-resistance environment-friendly sleeve material, thereby overcoming the defects existing in the prior coaxial cable for a building cabling system, greatly improving environmental protection performance and fire resistance of the product, and meeting strict requirements on design and application of building horizontal and vertical cabling systems with significant social benefit.

Description

(1) Technical field [0001] The invention relates to the field of electric wire and cable processing, in particular, the invention relates to a high flame-retardant ring protection sheathing material and a coaxial cable made thereof. (2) Background technology [0002] In order to distinguish and evaluate the flame retardant performance of cables, UL (Underwrite rs Laboratories Incorporation) has developed a test method to verify whether the cables meet the NEC standards. CMP), Trunk Grade (CMR), Commercial Grade (CM), General Purpose Grade (CMG), Home Grade (CMX). [0003] In order to meet the cable flame-retardant grade requirements specified by UL in the building wiring system, domestic coaxial cable manufacturers have accelerated the research and development of flame-retardant coaxial cables. The flame retardant grade of the cable can only be used for the fire protection requirements of vertical wiring if it meets the CMR grade or higher. The second-ranked CMR cable has ...

AI Technical Summary

Problems solved by technology

[0006] 1) During the use of the cable, heavy metal harmful substances such as lead will be precipitated or released to the surrounding environment, polluting the surrounding environment

[0007] 2) When the cable is burned, a large amount of harmful gas is produced, which is harmful to the environment and the atmosphere

[0008] 3) In the event of a fire, the poisonous gas will cause greater damage, which is not conducive to evacuation and first aid

However, it is a difficult problem in the development of coaxial cable technology to develop an environmentally friendly CMR flame-retardant coaxial cable with perfect flame-retardant ability and environmental protection characteristics at the same time. Domestic research in this area has just started, and no achievements and literature reports have been seen in this area.

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