Processing technology of PBT (Polybutylene Terephthalate) blue color masterbatch

Abstract

The invention relates to a processing technology of a PBT (Polybutylene Terephthalate) blue color masterbatch. The processing technology comprises the steps of adding a polypropylene nucleating agent and a PVC (Polyvinyl Chloride) heat stabilizer while matching the colors of PBT and a blue pigment and blending PBT and the blue pigment, wherein the polypropylene nucleating agent accounts for 5-20% of the total weight of a material, and the PVC heat stabilizer accounts for 5-20% of the total weight of the material; then, mixing to obtain the PBT blue color masterbatch. The processing technology has the advantages that (1) the polypropylene nucleating agent is added, so that the crystallization temperature is raised, the crystallization time is shortened, the formation is promoted, and the extra length of an optical fiber is controlled within an allowable range when a loose tube is cabled; (2) the PVC heat stabilizer is added, so that the heat resistance and the moving resistance are remarkably improved in petroleum butter at the same temperature, and the optical fiber / cable distinguishing effect is improved; (3) all indexes of the blue color masterbatch produced through the measures meet enterprise standard requirements through test detection, the extra length of the optical fiber / cable used by an optical fiber / cable production enterprise meets a specification requirement, the heat resistance and the petroleum butter resistance meet requirements, and the original defects of linear expansion coefficients, heat resistance and petroleum butter moving resistance are overcome.

Description

technical field [0001] The invention relates to a processing technology of PBT blue color masterbatch, belonging to the technical field of plastic processing. Background technique [0002] PBT color masterbatch is based on PBT and mixed with pigments, and then put into the extruder for mixing and pelletizing. [0003] However, due to the mixing of PBT and blue pigment toner, new problems have arisen, [0004] 1. It affects its linear expansion coefficient. When the loose tube is cabled, the excess length of the optical fiber exceeds the specified requirements. [0005] 2. Since the optical fiber cable works in various environments, when the temperature is high, its color gray level will decrease and decolorize. It affects the identification effect of optical fiber and cable. [0006] 3. In the production process of optical fiber and optical cable, petroleum jelly should be injected to ensure the performance of optical fiber. However, petroleum jelly makes the color migra...

AI Technical Summary

Problems solved by technology

[0003] However, due to the mixing of PBT and blue pigment toner, new problems have arisen,

[0004] 1. It affects its linear expansion coefficient. When the loose tube is cabled, the excess length of the optical fiber exceeds the specified requirements.

[0005] 2. Since the optical fiber cable works in various environments, when the temperature is high, its color gray level will decrease and decolorize

However, petroleum jelly makes the color migrate, which affects the identification effect of optical fiber and cable

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