CN201310472355
CN103506621A
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摘要:本发明公开了一种氟橡胶包覆纳米铝粉复合粒子的制备方法,包括以下步骤:采用纳米铝粉质量5~15%的硅烷偶联剂改性纳米铝粉;选用改性纳米铝粉质量5~20%的氟橡胶,采用溶剂-非溶剂法对偶联剂改性过的纳米铝粉进行包覆改性,制备纳米铝粉/氟橡胶复合粒子,复合粒子为核-壳结构,包覆层氟橡胶可以延缓纳米铝粉的常温氧化,明显提高纳米铝粉的高温氧化速率及热量释放速率。本发明能有效的阻止纳米铝粉的氧化并保持纳米铝粉的活性,可以克服非配方成分或惰性成分包覆纳米铝粉对烟火药、推进剂综合性能的影响,同时提高纳米铝粉和烟火药剂、推进剂其它组分的相容性。
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Abstract: The invention discloses a preparation method for fluororubber cladding nanometer aluminum powder composite particles. The preparation method comprises the following steps that the silane coupling agent with the mass being 5-15% that of nanometer aluminum powder is used for modifying the nanometer aluminum powder; fluororubber with the mass being 5-20% that of the modified nanometer aluminum powder is selected and used, a solvent-nonsolvent method is used for conveying cladding modifying on the nanometer aluminum powder modified by the coupling agent, nanometer aluminum powder/fluororubber composite particles are prepared, and the composite particles are of a core-shell structure; the cladding layer fluororubber can postpone the normal temperature oxidation of the nanometer aluminum powder, and the high temperature oxidation rate and heat release rate of the nanometer aluminum powder are significantly improved. The preparation method for the fluororubber cladding nanometer aluminum powder composite particles can effectively prevent the oxidation of the nanometer aluminum powder, keep the activity of the nanometer aluminum powder, overcome the influence of non-formula composition or inert composition cladding nanometer aluminum powder on the comprehensive performance of pyrotechnic composition and propellant, and improve the compatibility between the nanometer aluminum powder and pyrotechnic composition, propellant and the like.
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申请人: 南京理工大学
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Applicant: UNIV NANJING SCIENCE & TECH
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地址: 210094 江苏省南京市孝陵卫********(隐藏)
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发明(设计)人: 叶明泉 刘松松 任成露 韩爱军 陈昕 李建
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Inventor: YE MINGQUAN; LIU SONGSONG; REN CHENGLU; HAN AIJUN; CHEN XIN; LI JIAN
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主分类号: B22F1/02(2006.01)I
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分类号: B22F1/02(2006.01)I B82Y40/00(2011.01)I
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