采用类共沉淀法将催化剂三氧化二铁(Fe2O3)和吸光材料石墨与高能猛炸药奥克托今(HMX)复合,制备一系列不同配比的HMX/石墨/Fe2O3复合含能材料。通过扫描电子显微镜(SEM)、X-射线衍射仪(XRD)、傅里叶红外光谱仪(FT-IR)对其形貌和结构进行了表征,通过紫外–可见–近红外漫反射光谱(UV-Vis-DRS)测试光吸收性能;并将HMX/石墨/Fe2O3复合含能材料在一定激光强度下进行1064 nm激光点火性能测试。结果表明,复合物中的HMX为规则的多边几何形状,粒度在20 μm以内,石墨与Fe2O3均匀分布在HMX表面,复合效果较好。添加石墨/Fe2O3的HMX基复合含能材料在激光能量密度31.34 J/cm2下能发火并持续稳定燃烧,不同质量比的石墨/Fe2O3和催化剂Fe2O3粒径的大小会影响复合材料的点火延迟时间和质量燃烧速率。在添加石墨/Fe2O3质量分数为5%时,随着石墨相对含量的增加和Fe2O3颗粒的增大,药剂点火延迟时间增加,当石墨/Fe2O3质量比为4:1时药剂质量燃烧速率最快,为0.0440 g∙cm−2∙s−1。 The catalyst ferric oxide (Fe2O3) and the absorbent material graphite were combined with the high-energy explosive octogen (HMX) by using co-precipitation method. A series of HMX/graphite/Fe2O3composite energetic materials with different ratios were prepared. Their morphologies were obtained by SEM and structure by XRD and FT-IR, the light absorption performance was tested by UV-Vis-DRS. And the laser ignition performance of the HMX/graphite/ Fe2O3composite energetic materials was tested under a certain laser energy intensity of 1064 nm wavelength. The results showed that the HMX particles in the composite were in a regular polygonal geometry with the particle size of within 20 μm, the graphite/Fe2O3was uniformly distributed on the surface of the HMX particles. The HMX-based composite energetic materials with graphite/Fe2O3could be ignited and burn continuously under the laser energy density of 31.34 J/cm2. Different mass ratios of graphite/Fe2O3and the particle size of catalyst Fe2O3can affect the ignition delay time and mass burning rate. With the total mass fraction of graphite/Fe2O3was 5%, the ignition delay time of HMX/graphite/Fe2O3composite increased with the increase of the relative content of graphite and the increase of Fe2O3particle size. When the mass ratio of graphite/Fe2O3is 4:1, the combustion velocity of the composite was the fastest, which is 0.0440 g ∙cm−2∙s−1.
采用类共沉淀法将催化剂三氧化二铁(Fe2O3)和吸光材料石墨与高能猛炸药奥克托今(HMX)复合,制备一系列不同配比的HMX/石墨/Fe2O3复合含能材料。通过扫描电子显微镜(SEM)、X-射线衍射仪(XRD)、傅里叶红外光谱仪(FT-IR)对其形貌和结构进行了表征,通过紫外–可见–近红外漫反射光谱(UV-Vis-DRS)测试光吸收性能;并将HMX/石墨/Fe2O3复合含能材料在一定激光强度下进行1064 nm激光点火性能测试。结果表明,复合物中的HMX为规则的多边几何形状,粒度在20 μm以内,石墨与Fe2O3均匀分布在HMX表面,复合效果较好。添加石墨/Fe2O3的HMX基复合含能材料在激光能量密度31.34 J/cm2下能发火并持续稳定燃烧,不同质量比的石墨/Fe2O3和催化剂Fe2O3粒径的大小会影响复合材料的点火延迟时间和质量燃烧速率。在添加石墨/Fe2O3质量分数为5%时,随着石墨相对含量的增加和Fe2O3颗粒的增大,药剂点火延迟时间增加,当石墨/Fe2O3质量比为4:1时药剂质量燃烧速率最快,为0.0440 g∙cm−2∙s−1。
复合含能材料,激光点火,HMX,石墨,三氧化二铁
Wenjie Wu
School of National Defense Science and Technology, Southwest University of Science & Technology, Mianyang Sichuan
Received: Jun. 17th, 2022; accepted: Jul. 21st, 2022; published: Jul. 28th, 2022
The catalyst ferric oxide (Fe2O3) and the absorbent material graphite were combined with the high-energy explosive octogen (HMX) by using co-precipitation method. A series of HMX/gra- phite/Fe2O3composite energetic materials with different ratios were prepared. Their morphologies were obtained by SEM and structure by XRD and FT-IR, the light absorption performance was tested by UV-Vis-DRS. And the laser ignition performance of the HMX/graphite/ Fe2O3composite energetic materials was tested under a certain laser energy intensity of 1064 nm wavelength. The results show