Hazard Characterization of Aluminum Nanopowder Compositions
Hazard Characterization of Aluminum Nanopowder Compositions
复制标题
DOI：
10.1002/prep.200390018
复制
发表时间：
2003-06
期刊：
影响因子：
--
通讯作者：
David E. G. Jones;R. Turcotte;R. Fouchard;Q. Kwok;A. Turcotte;Zainab Abdel-Qader
中科院分区：
文献类型：
--
作者：
David E. G. Jones;R. Turcotte;R. Fouchard;Q. Kwok;A. Turcotte;Zainab Abdel-Qader
采用DSC、TG-DTA和加速量热法（ARC）研究了两种纳米铝粉Alss和Alsstef（一种Teflon涂层Alss）在空气中的热行为。与两种较大的Al纳米粉末相比，其危害结果已被报道，Alss和Alsstef在空气中的反应性较低，这可能是由于钝化和涂层的性质。还使用ARC研究了Alss和Alsstef在潮湿环境中的稳定性。Alss与水的反应性很强，这可能导致在潮湿的大气中老化的问题。Alsstef的“涂层”显著降低了Alss与水的反应性。用TG-DTA-FTIR-MS研究了ADN、GAP和不同Al粉的混合物的出气行为，没有观察到ADN/Al、GAP/Al和ADN/GAP之间的化学作用。利用ARC研究了纳米Al粉的加入对ADN和GAP热分解的影响。纳米Al粉对ADN的热稳定性影响较小，而Alss和Alsstef的加入降低了GAP的起始温度。还测定了纳米铝粉及其与ADN和GAP混合物的静电放电（ESD）、冲击和摩擦感度。Al纳米粉末似乎使ADN对ESD、冲击和摩擦敏感。
The thermal behaviour in air of two Al nanopowders, Alss and Alsstef, a Teflon coated version of Alss, was determined using DSC, TG-DTA and accelerating rate calorimetry (ARC). Compared to two larger Al nanopowders, for which hazards results have been reported, Alss and Alsstef are less reactive in air, possibly due to the nature of the passivating and coating layers. The stability of Alss and Alsstef in a wet environment was also investigated using ARC. Alss is very reactive with water, which could lead to a problem of aging in a humid atmosphere. The ”coating” of Alsstef significantly reduces the reactivity of Alss with water. Outgassing behaviour of mixtures of ADN, GAP and various Al powders was investigated using TG-DTA-FTIR-MS. No chemical interactions were observed between ADN/Al, GAP/Al and ADN/GAP. The effect of the addition of Al nanopowders on the thermal decomposition of ADN and GAP was studied using ARC. Al nanopowders had a minor effect on the thermal stability of ADN, while the addition of Alss and Alsstef lowered the onset temperature of GAP. The electrostatic discharge (ESD), impact and friction sensitivities of Al nanopowders and their mixtures with ADN and GAP were also determined. Al nanopowders appear to sensitize ADN to ESD, impact and friction.