Flame-retardant optical fiber and preparation method thereof

Abstract

The invention relates to the technical field of optical fibers, in particular to a flame-retardant optical fiber and a preparation method thereof, and the flame-retardant optical fiber is composed of a fiber core, a cladding, a coating layer and a sheath. The sheath prepared from the raw materials such as polyvinyl chloride, epoxy resin, dibutoxyethyl adipate, the stabilizer, the flame retardant and the antioxidant is excellent in flame retardant property and high in mechanical property, can meet the use requirements of flame-retardant optical fibers in various environments, and has a good market prospect.

Description

technical field [0001] The invention relates to the technical field of optical fibers, in particular to a flame-retardant optical fiber and a preparation method thereof. Background technique [0002] Optical fiber refers to an optical fiber, which is a light transmission tool that utilizes the principle of total reflection of light in fibers made of glass or plastic. As an efficient light transmission medium, optical fiber has many advantages, such as small signal crosstalk, good confidentiality, rich material sources, no radiation, small size, light weight, strong adaptability, long life, easy transportation and laying, etc. . Therefore, in the past few decades, optical fibers have been developed rapidly, not only in important applications in communications, but also in medicine, lasers, sensing and other fields have played an irreplaceable role. [0003] The core of the optical fiber is composed of transparent materials, surrounded by a material with a slightly lower ref...

AI Technical Summary

Problems solved by technology

However, the cortex only uses PVC material for optical fiber flame retardancy. Although PVC has certain flame retardancy properties, it cannot meet the special environmental requirements of optical fibers.