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<p>By utilizing the advantages of easy film-forming properties and high fluoride content of polyvinylidene fluoride (PVDF), vacuum spin-coating technology was used to prepare PVDF@Al/CuO self-supporting energetic film with different PVDF addition amounts. The films such as PVDF_2@Al/CuO, PVDF_4@Al/CuO, PVDF_6@Al/CuO, and PVDF_8@Al/CuO were obtained with different coating layers. The composition, structure, morphology, and hydrophobicity of the samples were studied using x-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and contact angle measurement equipment. The combustion behavior and heat release performance of PVDF@Al/CuO energetic thin films were investigated by high-speed cameras and differential scanning calorimetry (DSC) technology. The results showed that the surface of PVDF@Al/CuO energetic thin film is the smoothest, most even, and self-supporting when the PVDF content was 8%. The static contact angle on the left side of the energetic film is 103.7°, and the static contact angle on the right side is 104.1°, indicating a certain degree of hydrophobicity. Additionally, the PVDF_8@Al/The CuO film with 7 coating layer burns violently, releasing a heat of 5890&#xa0;J&#xa0;g<sup>−1</sup> with over pressure of 559&#xa0;KPa. Our results highlight the application of PVDF as additive to prepare self-supporting energetic films by spin coating.</p>

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Preparation and Combustion Performance of PVDF@Al/CuO Self-Supporting Energetic Films

  • 期刊论文

  • 发表日期：

    2025年8月8日

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  • Yanjun Yin,
  • Chao Yang,
  • Jinpei Hei,
  • Lehua Cheng,
  • Lei Li,
  • Xiaojie Yin,
  • Yang Zhang,
  • Zili Ma

摘要

By utilizing the advantages of easy film-forming properties and high fluoride content of polyvinylidene fluoride (PVDF), vacuum spin-coating technology was used to prepare PVDF@Al/CuO self-supporting energetic film with different PVDF addition amounts. The films such as PVDF_2@Al/CuO, PVDF_4@Al/CuO, PVDF_6@Al/CuO, and PVDF_8@Al/CuO were obtained with different coating layers. The composition, structure, morphology, and hydrophobicity of the samples were studied using x-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and contact angle measurement equipment. The combustion behavior and heat release performance of PVDF@Al/CuO energetic thin films were investigated by high-speed cameras and differential scanning calorimetry (DSC) technology. The results showed that the surface of PVDF@Al/CuO energetic thin film is the smoothest, most even, and self-supporting when the PVDF content was 8%. The static contact angle on the left side of the energetic film is 103.7°, and the static contact angle on the right side is 104.1°, indicating a certain degree of hydrophobicity. Additionally, the PVDF_8@Al/The CuO film with 7 coating layer burns violently, releasing a heat of 5890 J g−1 with over pressure of 559 KPa. Our results highlight the application of PVDF as additive to prepare self-supporting energetic films by spin coating.