有机硅/改性纳米TiO_(2)/石蜡基复合缓蚀剂的制备及其性能  

Preparation and Performance of a Silicon/Modified Nano TiO_(2)/Paraffin Based Composite Erosion Inhibitor

作　　者：刘琼 刘璐 席元伟 高志众 堵平[2] LIU Qiong;LIU Lu;XI Yuan-wei;GAO Zhi-zhong;DU Ping(Qingyang Chemical Industry Corporation,Liaoyang 111002,China;School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]辽宁庆阳特种化工有限公司,辽宁辽阳111002 [2]南京理工大学化学与化工学院,江苏南京210094

出　　处：《含能材料》2024年第8期832-838,共7页Chinese Journal of Energetic Materials

摘　　要：为改善高能发射药R2的烧蚀性,设计制备了一种有机硅/改性纳米TiO_(2)/石蜡基新型复合缓蚀剂,利用半密闭爆发器实验,以制式缓蚀剂为参比物,测试了新型复合缓蚀剂的降烧蚀性能,并利用扫描电子显微镜结合能谱仪(SEM-EDS)研究了缓蚀机理,采用密闭爆发器研究新型复合缓蚀剂对发射药静态燃烧性能的影响。结果表明:新型复合缓蚀剂降烧蚀效果显著,添加5%时,缓蚀率可达到34.24%;缓蚀剂中的十甲基环五硅氧烷(D5)在高温下分解,产生的硅氧化物纳米小球附着于烧蚀管内壁,能有效阻碍渗碳反应的发生;加入新型复合缓蚀剂的R2发射药燃烧渐增性增强,能量集中于燃烧后期释放,利于改善烧蚀。To reduce the erosion of R2 high-energy propellant,a new composite erosion inhibitor based on silicon/modified nano TiO_(2)/paraffin was designed and prepared.The erosion-reducing performance of the new type of composite erosion inhibitor was studied by a semi-closed bomb test with the standard erosion inhibitor as the reference material.The erosion inhibition mechanism of the new composite erosion inhibitor was studied by scanning electron microscope-energy dispersive spectrum(SEM-EDS),and its effect on the static combustion property of propellant was investigated using a closed bomb test.The results show that the new composite erosion inhibitor has a significant effect on reducing erosion.The erosion inhibition rate can reach 34.24%when the addition of erosion inhibitor is 5%.Decamethylcyclopentasiloxane(D5)in the erosion inhibitor is decomposed at high temperature,and the silicon oxide nanoparticles produced by the decomposition can effectively block the carburization reaction by adhering to the inner wall of the erosion tube.Since R2 propellant added with the new composite erosion inhibitor has higher combustion progressivity,the energy is released at the later stage of combustion which is beneficial to reduce the erosion.

关 键 词：降烧蚀 有机硅缓蚀剂 高能发射药 缓释机理 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ562[化学工程—炸药化工]