摘要
通过在二氧化硅（SiO2）溶胶向凝胶转变过程中,依次加入黑索今（RDX）的丙酮-N,N-二甲基酰胺（DMF）混合溶液和氟橡胶（FPM2602）的乙酸乙酯溶液,采用提拉法和手工旋转涂抹法制备了白色半透明状质量分数为80%的RDX/SiO2传爆药薄膜。结果表明,当正硅酸乙酯（TEOS）和乙醇摩尔比为1：4时,随醇水摩尔比的适当减小,膜的韧性降低并且成膜后RDX粒径变小;溶胶在60℃陈化时,随陈化时间增加,溶胶粘度由3 Pa·s增至凝胶点时的13 Pa·s,此时涂膜,所得薄膜表面平整。扫描电镜表明,在薄膜内部,300-500 nm的球状SiO2黏附在RDX表面,形成3-5μm且呈块状的RDX/SiO2复合膜单元,是一种新型的膜状传爆药。
In the process of silica（SiO2） sol transiting into gel,the definite mixture of acetone,N,N-dimethylformamide（DMF） and hexogen（RDX） and the mixture of acetic ester and fluorine rubber（FPM2602） were added sequentially,and the sub-transparent white 80% RDX/SiO2 booster membranes were obtained by pulley and manual spin coating methods.Results show that when the molar ratio of silicic acid tetracthyl ester（TEOS） to ethanol is 1：4,with the proper decreasing of the molar ratio between ethanol and water,the ductility of membrane and the particle size of RDX decrease.When the sol ages at 60 ℃,the viscosity of sol solution increases from 3 Pa·s to 13 Pa·s at gel point with the increasing of aging time,and the membranes acquired by spin coating is thin and smooth.The SEM photographs show that the spheroidal SiO2 with particle size of 300-500 nm adheres on the surface of RDX and forms a blocklike composite membrane element of RDX/SiO2 with size of 3-5 μm,which is a new-type booster membrane.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2009年第6期689-693,共5页
Chinese Journal of Energetic Materials
关键词
应用化学
溶胶凝胶法
黑索今
凝胶点
传爆药薄膜
applied chemistry
sol-gel method
hexogen（RDX）
gel point
booster membrane
