全生物基阻燃聚乳酸复合材料及其制备方法
By using coffee grounds loaded with phytic acid and coupling agents in polylactic acid, the flammability problem of polylactic acid was solved, and high-performance flame-retardant materials suitable for multiple fields were prepared, achieving improvements in flame-retardant performance and mechanical properties.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI
- Filing Date
- 2023-05-15
- Publication Date
- 2026-07-17
AI Technical Summary
Polylactic acid is flammable and has a low oxygen index, making it unsuitable for applications requiring high flame retardancy. Commercially available phytic acid aqueous solutions are difficult to directly add to prepare flame-retardant polylactic acid composite materials.
Coffee grounds were used as a carrier for phytic acid. The porous structure and hydroxyl groups of coffee grounds reacted with phytic acid to load phytic acid-modified coffee grounds and polylactic acid (PLA) composites. A coupling agent was added to improve compatibility, thus preparing a fully bio-based flame-retardant PLA composite material.
The prepared fully bio-based flame-retardant polylactic acid composite material has excellent flame-retardant and mechanical properties, and is suitable for food packaging, textiles, medical, automotive, electrical appliances and other fields. The method is simple, the conditions are mild, and it is easy to industrialize.
Smart Images
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