Polyimide film, as an important engineering material, has excellent thermal stability, electrical properties, and mechanical strength. However, in certain high demand application fields, such as high-temperature electronic packaging, chemical biomedicine, etc., higher requirements have been put forward for the performance of polyimide films. This article will introduce the preparation and performance characterization of nano alumina modified polyimide films, revealing a breakthrough material for you!
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[Preparation Process]
Preparation of raw materials: nano alumina powder, polyimide resin, solvents, etc;
Mix nano alumina powder with polyimide resin, add an appropriate amount of solvent, and stir evenly;
Apply the mixture onto a glass plate, place it in a vacuum drying oven, and dry it at a certain temperature;
Peel off the dried film from the glass plate and perform subsequent performance characterization.
[Characterization Method]
The dispersibility of nano alumina in polyimide films was observed using X-ray diffraction (XRD) and scanning electron microscopy (SEM);
Thermal performance: The thermal stability of the material is tested through thermogravimetric analysis (TGA) and dynamic thermodynamic analysis (DSC);
Mechanical properties: Use tensile testing to test the mechanical strength of materials;
Electrical performance: Test the electrical performance of materials through breakdown voltage and insulation resistance.
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【 Experimental Results 】
The XRD and SEM results show that nano alumina has good dispersibility in polyimide films;
TGA and DSC tests indicate that nano alumina modified polyimide films have higher thermal stability and better processing performance;
The tensile test shows that the nano alumina modified polyimide film has better mechanical strength;
The breakdown voltage and insulation resistance tests indicate that the nano alumina modified polyimide film has better electrical properties.
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【 Conclusion 】 This article successfully prepared nano alumina modified polyimide films through a simple solution coating method. The experimental results show that the addition of nano alumina significantly improves the thermal stability, mechanical strength, and electrical properties of polyimide films. This study provides new possibilities for expanding the application of polyimide films in high demand fields.
Editor: Sichuan Jinzhongde Science and Technology Research Institute
