The effects of fluoropolymers with optimized contents on reactivity and combustion behavior of Al/MxOy nanocomposites

Probing on Mutual Interaction Mechanisms of the Ingredients of Al/CuO/PVDF Nanocomposites

“…The study reveals that the P m for AC and PA are the lowest and highest, measured at 1.85 and 3.94·MPa·g –1 , respectively. Compared to μ-Al/CuO under the same conditions (1.40 MPa·g –1 ), it suggests that the use of n -Al particles can considerably enhance the reactivity and impact performance, albeit at a slightly higher cost in energy. However, the values of P r for AC and PA are quite similar.…”

“…More comprehensive data and their respective densities are included in the support materials. Due to the noncombustibility of PC, it was tested solely in TG/DSC and GC-MS. For AC, as an impressive thermite, it boasts a high density and volumetric calorific value, measured 3031 J·g –1 and 12.73 kJ·cm –3 , which is lower than the μ-Al/CuO of 3184 J·g –1 and 15.79 kJ·cm –3 due to the sticker oxide layer. On the other hand, AP is known for its high gravimetric calorific value, which reaches 4032 J·g –1 , but its low-density results in a lower volumetric calorific value.…”

“…Figure 4a shows the curves of pressure per unit mass versus time (P m , MPa•s −1 ) for the studied samples, and Figure 4b shows a comparison in the pressurization rates (P r , MPa•s −1 • g −1 ) of the pressure pulse for involved samples. Figure 4c plots the relative changes in maximum P increments (ΔP max ), P m , P r , 41 it suggests that the use of n-Al particles can considerably enhance the reactivity and impact performance, albeit at a slightly higher cost in energy. However, the values of P r for AC and PA are quite similar.…”

“…the mutual interaction mechanisms and provide guidance for the design, preparation, and application of novel FCMIC, as a further investigation on our previous work. 41,42 ■ EXPERIMENTAL SECTION Materials. The raw materials selected were n-Al powders with an average diameter of 200 nm from Zhongke yannuo New Material Technology Co., Ltd., Beijing, China, μ-Al powders with an average diameter of 5 um from Maogon Technology Co., Ltd., Shanghai, China, and n-CuO with an average size of 50 nm from Xianxin New Material Technology Co., Ltd., China, and the PVDF ultrafine powders (purity >99.9%) were purchased from Arkama Incorporation with an average molecular weight of 10,000.…”

“…At last, the kinetic parameters of typical reaction steps were obtained, and possible overall mutual reaction mechanisms of the ternary Al/CuO/PVDF under the effect of the interfacial structure were proposed. This work aims to clarify the mutual interaction mechanisms and provide guidance for the design, preparation, and application of novel FCMIC, as a further investigation on our previous work. , …”