Storage-stable inflaming retarding optical cable material and preparation method thereof

Abstract

The invention discloses a storage-stable inflaming retarding optical cable material which is prepared from the following raw materials in parts by weight: 2-3 parts of polyisoprene, 6-7 parts of guanidine sulfamate, 20-23 parts of carbon nanotubes, 0.3-0.4 part of N,N'-dicyclohexyl carbimide, 4-5 parts of hexachlorocyclotriphosphazene, 0.2-0.4 part of sodium hydroxide, 1-2 parts of sulfocarbamide, 0.7-1 part of calcium naphthenate, 0.1-0.3 part of N-phenyl-2-naphthylamine, 0.1-0.2 part of dithio-salicylic acid, 4-6 parts of dibutyl maleate, 0.3-1 part of sp80, 2-3 parts of aluminum dihydrogen phosphate, 3-4 parts of polyether diol, 0.2-1 part of hexamethyl cyclotrisiloxane, 17-20 parts of nylon and 120-130 parts of polyvinyl chloride. The graft-modified nylon and polyvinyl chloride which are added into the optical cable material provided by the invention have quite good compatibility, and effectively improve the storage stability of a finished product.

Description

technical field [0001] The invention relates to the technical field of optical cable materials, in particular to a storage-stable flame-retardant optical cable material and a preparation method thereof. Background technique [0002] Nanotechnology emerged in the 1980s and has been widely used in many fields. The study found that adding nanoparticles to polymers can greatly improve the performance of the material. For example, when a small amount of nanoparticles such as graphite calcium, carbon nanotubes, and molybdenum disulfide are added to the polymer, the mechanical strength of the material will significantly increase the IWI. The study found that adding only a very small amount of nanomaterials can greatly reduce the heat release rate of material combustion, and at the same time increase the mechanical strength of the composite material. At present, there are mainly several kinds of nano-flame retardant systems that have been studied more: (1) inorganic nanoparticles,...

AI Technical Summary

Problems solved by technology

③ Unlike halogen flame retardants, phosphorus nitrogen flame retardants and other flame retardants that have a clear flame retardant mechanism, there is no systematic explanation for the mechanism of nano flame retardant at this stage

Therefore, the elaboration of the flame retardant mechanism of nanoparticles in the polymer combustion process will be the direction of future research. At the same time, due to the lack of polar functional groups on the surface of carbon nanotubes, the compatibility with the polymer matrix is ​​poor; the high aspect ratio The structure will lead to entanglement and aggregation during processing, making it difficult to disperse well

In addition, carbon nanotubes only have a significant effect on reducing the heat release rate, but cannot effectively improve the oxygen index and vertical combustion rating of the material.

In order to improve the compatibility and dispersion of carbon nanotubes in polymers, coupling agents, surfactants or polymers can be used to modify the surface of carbon nanotubes, but such modification methods are often difficult to improve their flame retardancy. performance, some even destroy the original flame retardancy