一种强韧全生物基聚乳酸 / 聚酰胺复合材料及其制备方法
By preparing core-shell amide modified materials to improve the compatibility and interfacial tension of polylactic acid/polyamide blends, the problems of brittleness and poor impact resistance of polylactic acid materials were solved, enabling the application of high-performance composite materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANJIN UNIV
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-17
AI Technical Summary
Polylactic acid (PLA) materials suffer from brittleness, low elongation at break, and poor impact resistance in engineering applications, making it difficult to meet the requirements of automotive parts and other fields. Existing blending modification methods suffer from phase separation and low impact strength.
Core-shell amide modified materials were prepared by using amino nanoparticle reactive-filled functional elastomer copolymers. By forming a micro-core-shell structure in situ, the compatibility and interfacial tension of the polylactic acid/polyamide blend system were improved. Hydrolysis stabilizers and antioxidants were added to improve processing stability, and chain extenders were added to improve melt strength.
The prepared strong and tough polylactic acid/polyamide composite material has excellent tensile strength, elongation at break and impact resistance. The tensile strength reaches 60-75MPa, the elongation at break is 200-400%, and the notched impact strength can reach up to 50kJ/m2. It is suitable for engineering plastics fields such as automotive parts.
Smart Images
Figure CN120737568B_ABST