High-CTI value modified PBT material suitable for various colors and preparation method thereof

Abstract

The invention discloses a high-CTI (comparative tracking index) value modified PBT (polybutylene terephthalate) material suitable for various colors and a preparation method thereof. The high-CTI-value modified PBT material suitable for various colors comprises polybutylene terephthalate, polyethylene glycol terephthalate, an elastomer flexibilizer, an antioxidant, a lubricant, a brominated flame retardant, antimony trioxide, a brominated flame retardant substitute, a flame retardant synergist, a nitrogen-based flame retardant, a phosphorus-based flame retardant, a nucleating agent, a dyeing auxiliary agent and glass fibers. By adding the brominated flame retardant substitute and adjusting the flame retardant system, under the condition of the existing conventional glass fiber content, the brominated flame retardant content is greatly reduced and the CTI value of the modified PBT material is improved, so that the limitation that the CTI value of the modified PBT material can be greatly reduced by carbon black is broken through, and the high-CTI-value modified PBT material can perform color blending by using the carbon black; and the color is blended by the carbon black, so that high-CTI-value modified PBT material products with various colors can be prepared, and the color requirements of people on the high-CTI-value modified PBT material products are met.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a high CTI value modified PBT material suitable for various colors and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, countries all over the world have correspondingly increased requirements for solid insulation tracking index (CTI), glow wire flammability index and combustion performance. At present, people have more and more diversified color requirements for products made of PBT materials, but in the process of deploying dark colors, especially black, carbon black needs to be added, but carbon black will significantly reduce the solid insulation tracking index (CTI ). At present, most of the high-CTI PBT materials in the existing technology are basically natural color materials, and a small amount of black materials are made of special dyeing auxiliaries made of red, yellow, blue and other toners or special black...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a kind of high CTI value modified PBT material applicable to various colors and its preparation method, to solve the above-mentioned problem that carbon black and brominated flame retardant reduce the electric tracking resistance index of solid insulation

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