Pc-pbt alloy material, preparation method and application thereof

By adjusting the ratio of PC and PBT and using micro-mixing equipment, the problem of uneven dispersion of flame retardants in PC-PBT alloy materials was solved, achieving efficient and economical flame retardant performance and good impact resistance, thus broadening the application fields.

CN122445159APending Publication Date: 2026-07-24CHINA PETROLEUM & CHEMICAL CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2025-01-24
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing PC-PBT alloy materials require expensive antimony-containing flame retardants to meet high flame retardant performance requirements, and the flame retardants are not evenly dispersed, leading to increased costs and uneven performance.

Method used

PC and PBT with a weight ratio of 4 to 6:1 are used, along with toughening agents, brominated flame retardants, transesterification inhibitors, and antioxidants. The mixture is melted and extruded into pellets using a micro-mixing device to ensure uniform dispersion of the flame retardant and avoid the use of antimony-containing flame retardants.

Benefits of technology

While ensuring that the flame retardant performance is not reduced, the product cost is reduced, and the impact resistance and low temperature resistance of the material are improved. The flame retardant performance reaches the V0 level, and the impact strength can reach more than 500J/m.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The application relates to the field of high polymer materials, and discloses a PC-PBT alloy material and a preparation method and application thereof. The PC-PBT alloy material comprises PC and PBT in a weight ratio of 4-6:1, 7-15 parts of a toughening agent, 8-17 parts of a bromine-based flame retardant, 0.2-1 part of an ester exchange inhibitor and 0.01-0.3 part of an antioxidant, with the total weight of the PC and the PBT being 100 parts. The PC-PBT alloy material provided by the application does not need to use expensive antimony-containing synergistic flame retardant, the flame retardant performance of the product can be ensured by increasing the PC proportion, the problem of uneven dispersion of the flame retardant in the PC-PBT alloy product can be solved by using a micro-mixing device, the product cost is reduced under the premise of ensuring that the performance of the PC-PBT alloy product is not reduced, and the product has the characteristics of high impact resistance, low-temperature resistance and strong flame retardance.
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