一种阻燃聚酰胺材料组分分离循环回收利用方法
By separating BPS and Sb2O3 from flame-retardant polyamide materials through chemical decomposition, the technological gap in the recycling of flame-retardant polyamide materials has been filled, enabling efficient recycling and replacement of market products, and improving resource recycling efficiency and environmental benefits.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING TECH & BUSINESS UNIV
- Filing Date
- 2026-01-19
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, there is insufficient research on the recycling methods of flame-retardant polyamide materials, especially the recycling methods of high-value flame-retardant chemicals BPS and Sb2O3, which leads to environmental pollution and resource waste.
A chemical decomposition method is used to separate the polyamide matrix by stirring the reaction in an acidic aqueous solution. Subsequently, BPS is dissolved in a haloalkanes and Sb2O3 is separated by adjusting the pH in an alkaline solution. Combined with flash evaporation and drying steps, efficient recovery of BPS and Sb2O3 is achieved.
The recovery rate of BPS and Sb2O3 reached over 95%. The resulting recycled materials, Re-BPS and Re-Sb2O3, have performance that is basically consistent with similar products on the market. They can replace market products, improve resource recycling efficiency, and have significant economic and environmental benefits.
Smart Images
Figure CN121914461B_ABST