A kind of high heat-resistant flexible optical cable and its preparation method

Abstract

The invention discloses a highly-heatproof flexible optical cable and a preparation method thereof. The optical cable comprises a surface layer, a thermal protection reinforced layer, an intermediate bushing, a shielding layer, an inner wrapping layer and a core material; the surface layer is made of methyl vinyl silicone rubber cured with a flame retardant agent, the thermal protection reinforced layer is formed by braiding graphitized carbon fibers, the intermediate bushing is made of ENB terpolymer EP rubber, the shielding layer includes a carbon film, the inner wrapping layer includes silica based glass of a low refractive index, and the core material includes silica based glass of a high refractive index; the silica based glass of low refractive index comprises 85-92 parts of silica, 2-3 parts of sulfur dioxide, 2-3 parts of carbon diode, and 6-8 parts of boron oxide according to molecule quantities; and the silica based glass of high refractive index comprises 85-92 parts of silica, 3-4 parts of phosphorus pentoxide, and 8-10 parts of germanium oxide according to molecule quantities. The highly-heatproof flexible optical cable is high in insulation performance, good in shielding effect, low in minimal bending radius, resistant to high temperature and aging and long in service life.

Description

technical field [0001] The invention relates to the field of optical elements, in particular to a high heat-resistant flexible optical cable and a preparation method thereof. Background technique [0002] Optical fiber cable is manufactured to meet optical, mechanical or environmental performance specifications. It is a communication communication that uses one or more optical fibers placed in a sheath as a transmission medium and can be used individually or in groups. cable assembly. The optical cable is mainly composed of optical fiber (glass filament as thin as hair), plastic protective sleeve and plastic sheath. There is no metal such as gold, silver, copper and aluminum in the optical cable, and generally has no recycling value. An optical cable is a communication line in which a certain number of optical fibers form a cable core in a certain way, and is covered with a sheath, and some are also covered with an outer sheath to realize optical signal transmission. That ...

AI Technical Summary

Problems solved by technology

Optical cables are mainly composed of optical fibers (glass filaments as thin as hair), plastic protective sleeves and plastic sheaths. There are no metals such as gold, silver, copper and aluminum in optical cables, and generally have no recycling value.