A method for flame-retardant modification of degradable plastics and a candle container based on the plastics

By using composite flame retardants and compatibilizers, the balance between flame retardant and degradation properties of biodegradable plastics is improved, solving the problem of poor flame retardancy in existing biodegradable plastics and improving the safety and appearance quality of candle containers.

CN122234577APending Publication Date: 2026-06-19DALIAN TALENT GIFT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN TALENT GIFT CO LTD
Filing Date
2025-12-01
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing biodegradable plastics have poor flame retardancy and cannot meet high safety requirements. Furthermore, starch and modified corn stalk fibers are flammable, and composite aerogels lack active flame retardant properties, causing the materials to melt easily at high temperatures and affecting their degradation performance.

Method used

A composite flame retardant is formed by combining phosphorus-based flame retardants and inorganic flame retardants, and maleic anhydride-grafted polyolefin is used as a compatibilizer to improve the interfacial bonding force between polylactic acid and the composite flame retardant. The annular protrusion design is combined to enhance the friction between the candle and the inner wall of the container.

Benefits of technology

It significantly improves the balance between flame retardant and degradation properties of biodegradable plastics, ensuring the safety and appearance quality of candle containers and meeting high safety requirements.

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Abstract

This invention discloses a method for flame-retardant modification of biodegradable plastics and a candle container based on the plastic, belonging to the field of biodegradable plastics. The method for flame-retardant modification of biodegradable plastics includes the following steps: S1: weighing raw materials according to weight parts; S2: drying the raw materials in a vacuum drying oven; S3: mixing the raw materials to obtain a premix; S4: obtaining flame-retardant modified biodegradable plastic particles. This invention solves the problem that existing technologies can only improve flame retardancy through physical barriers, resulting in poor flame retardancy of biodegradable plastics. This invention significantly improves the flame retardant performance of biodegradable plastics by using a composite flame retardant formed by compounding phosphorus-based flame retardants and inorganic flame retardants, achieving a good balance between flame retardant and biodegradable properties. Using maleic anhydride-grafted polyolefins as a compatibilizer effectively improves the interfacial bonding force between polylactic acid and the composite flame retardant, enhancing the material's compatibility and ensuring good mechanical properties.
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Citation Information

Patent Citations

  • Degradable plastic, container made of the same and preparation method thereof

    CN119798933B