火炸药学报2017，Vol.40Issue(3)：60-63,76,5.DOI:10.14077/j.issn.1007-7812.2017.03.010
PDA包覆铝粉及其在HTPB中的分散稳定性
Polydopamine Coated on Aluminum Powders and Its Disperse Stability in HTPB
摘要
Abstract
Al@PDA composite particles were prepared via.coating aluminum powder surface by polydopamine (PDA) using the in-situ polymerization method of dopamine(DA).The surface morphology of Al@PDA at different concentrations of dopamine (DA) was characterized by SEM.The crystal type of Al powder before and after coating was tested by XRD.The surface element composition of Al@PDA was analyzed by XPS.The disperse stability of Al powder and Al@PDA in HTPB was investigated by sedimentation method.The dispersion of solid particles in HTPB was observed by preparing curing adhesive and sliced sheet sampling.The results show that when the mass concentration of DA is 3.5g/L, the coating effect to aluminum powder is the best, and a firm PDA thin film was formed on the surface of aluminum powders.The crystal type of Al powder before and after coating does not change.The presence of PDA coating layer is demostrated by the components of C-OH, C=O and π-π conjugated structure on the surface of Al@PDA detected by XPS.After settling for 24h, the stratification is observed in Al-HTPB system, while the Al@PDA-HTPB system still has homogeneous color, showing that the disperse stability of Al@PDA in HTPB is obviously better than raw material aluminum powder.关键词
铝粉/聚多巴胺/PDA/沉降法/分散稳定性/含铝炸药/HTPBKey words
aluminum powder/polydopamine/PDA/sedimentation method/disperse stability/aluminized explosive/HTPB分类
军事科技引用本文复制引用
肖春,祝青,谢虓,罗观,李尚斌..PDA包覆铝粉及其在HTPB中的分散稳定性[J].火炸药学报,2017,40(3):60-63,76,5.基金项目
中国工程物理研究院化工材料研究所科技创新基金(KJCX2014-01) （KJCX2014-01）
