Heat-resistant, high-strength, low-smoke, halogen-free and flame-retardant sheathing material for optical cables, and preparation method of sheathing material

Abstract

The invention discloses a heat-resistant, high-strength, low-smoke, halogen-free and flame-retardant sheathing material for optical cables, and a preparation method of the sheathing material. The sheathing material is prepared from the following components in parts by weight: 80-90 parts of polyolefin resin, 10-20 parts of a compatibilizer, 120-140 parts of a flame retardant, 1-2 parts of a coupling agent, 0.5-1 part of an antioxidant and 4-6 parts of a lubricant, wherein the polyolefin resin is prepared from the following components: a polyolefin elastomer (POE), metallocene modified linear low density polyethylene (MLLDPE) and high density polyethylene (HDPE), and the weight ratio of the polyolefin elastomer to the metallocene modified linear low density polyethylene to the high densitypolyethylene is equal to (50-70) to (12-25) to (8-10).

Description

technical field [0001] The invention relates to a sheathing material for an optical cable and a preparation method thereof, in particular to a heat-resistant, high-strength, low-smoke, halogen-free, flame-retardant sheathing material for an optical cable and a preparation method thereof. Background technique [0002] With the maturity of optical fiber transmission technology and the lower and lower price of optical fiber, the traditional coaxial cable transmission is becoming more and more unsuitable for the development of today's optoelectronic network. As the carrier of information, optical fiber has the advantages of small transmission loss and long transmission distance. , working frequency bandwidth, strong anti-interference ability and other advantages, making it the most ideal communication carrier for optoelectronic networks. Optical fibers are made of extremely pure quartz. Only single-mode optical fiber is used in optical fiber cable television, the cladding diame...

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Problems solved by technology

[0003] At present, this type of sheathing material for optical cables has low strength and high change rate of h

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