Double-85 (temperature of 85 DEG C and humidity of 85%) yellowing-resistant and low-odor flame-retardant transparent material for optical cable sheaths

Abstract

The invention discloses a double-85 (the temperature of 85 DEG C and the humidity of 85%) yellowing-resistant and low-odor flame-retardant transparent material for optical cable sheaths, which is characterized by comprising the following components in parts by weight: 100 parts of polyvinyl chloride (PVC) resin, 25-35 parts of a low-odor plasticizer, 3-5 parts of a super-cold-resistant solid plasticizer, 1.0-1.8 parts of a calcium-zinc composite stabilizer, 0.5-1.0 part of an organotin stabilizer and 15-25 parts of a liquid flame retardant. According to the double-85 yellowing-resistant and low-odor flame-retardant transparent material for optical cable sheaths, a low-melt-index super-cold-resistant solid plasticizer additive is adopted to improve the rapid extrusion performance of a twin-screw extruder during extrusion granulation through an advanced formula and excellent process treatment, and the surface is smooth and free of particles, a stabilizer of the calcium-zinc composite stabilizer and the organotin stabilizer is added in proportion, good humidity and temperature resistance are achieved, after aging is conducted at 85 DEG C under the humidity of 85% for 168 h, the coloris basically unchanged, the flame-retardant transparent material has good temperature and yellowing resistance, and the environmental protection performance meets the requirements of ROHS and REACH standards.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a double 85 anti-yellowing and low-odor flame-retardant transparent material for optical cable sheaths. Background technique [0002] At present, the new upsurge of optical fiber and cable has been carried out in the world. The competitiveness of my country's optical fiber and cable enterprises is constantly improving, and they are actively expanding overseas markets. Manufacturing is particularly important. Due to the existence of optical fiber and nylon in the cable structure, the requirements for the outer layer material are also very important due to the requirements of the use environment; [0003] At present, there are not many reports on anti-yellowing materials used in optical fibers in China. Most of the materials used in optical fibers are low-smoke and halogen-free materials, but their shortcomings of easy cracking and moisture resistance can easily ...

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Problems solved by technology

[0003] At present, there are not many reports on anti-yellowing materials used in optical fibers in China. Most of the materials used in optical fibers are low-smoke and halogen-free materials, but their shortcomings of easy cracking and moisture resistance can easily lead to premature failure of optical cables; It is very important to be resistant to temperature and humidity in the environment as well as to provide yellowing resistance and good flame retardant properties.

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