Special secondary coating PBT color master batch for ultralow-shrinkage optical fibers

Abstract

The invention relates to a special secondary coated PBT (polybutylene terephthalate) color master batch for ultralow-shrinkage optical fibers. The special secondary coating PBT color master batch comprises the following components in percentage by mass: 1-3% of an anti-shrinkage agent, 1-3% of a PP nucleating agent, 5-10% of toner, 1-3% of a heat stabilizer and 81-92% of a PBT base material. According to the invention, through reasonable process setting, the color master batch produced in the invention has very good use performance, and through actual detection, a very good technical effect isobtained.

Description

technical field [0001] The invention relates to a secondary coating PBT color masterbatch specially used for ultra-low shrinkage optical fibers, which belongs to the technical field of optical fiber materials. Background technique [0002] The main performance of an optical cable is signal transmission, and the excess length of the optical fiber directly affects the transmission quality and service life of the optical cable. With the development of the optical fiber and cable business, due to the different uses and operating environments, the requirements for optical cables are also different. There are many structures of optical cables, and the size and wall thickness of loose tubes are also different. The lengths are different. Although the adjustment of process parameters can change the excess length in the production process of the optical cable, some special structures cannot meet the requirements of the excess length and post-shrinkage of the optical cable to the loose...

AI Technical Summary

Problems solved by technology

With the development of the optical fiber and cable business, due to the different uses and operating environments, the requirements for optical cables are also different. There are many structures of optical cables, and the size and wall thickness of loose tubes are also different. The lengths are different. Although the adjustment of process parameters can change the excess length in the production process of the optical cable, some special structures cannot meet the requirements of the excess length and post-shrinkage of the optical cable to the loose tube. The modification cost of PBT and the modified production The amount of color masterbatch is too large, and color masterbatch is a kind of material that needs to be added in a small amount in the production process. materials, to help the lack of excess length requirements in the process of craft production

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