Enhanced water resistance and energy performance of core–shell aluminum nanoparticles via in situ grafting of energetic glycidyl azide polymer
Enhanced water resistance and energy performance of core–shell aluminum nanoparticles via in situ grafting of energetic glycidyl azide polymer
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通过原位接枝含能缩水甘油基叠氮化物聚合物增强核壳铝纳米颗粒的耐水性和能量性能
DOI：
10.1007/s10853-018-2503-1
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发表时间：
2018-06
期刊：
影响因子：
--
通讯作者：
Chuan Huang
中科院分区：
文献类型：
--
作者：
Chengcheng Zeng;Jun Wang;Guansong He;Chuan Huang
纳米铝虽然具有极高的比表面积和较高的反应活性，但由于其钝化的al2o3层，限制了其应用。在本研究中，通过原位接枝的方法将铝纳米颗粒接枝到能态叠氮缩水甘油酯聚合物（GAP）上，以提高其稳定性和释放能量的性能。结果表明，GAP接枝于纳米铝表面，形成- o- (CO-NH) -化学键，并可通过改变反应物的相对比例来调节GAP的壳层厚度。改性后的纳米颗粒具有疏水性，静水接触角从20.2°变化到142.4°。纳米铝在热水中的稳定性显著提高，210 min后约有10 wt%的改性铝反应。基于核壳构型，制备了(Al@GAP)/氟复合材料。在GAP的帮助下，材料的剧烈燃烧现象和高释放速率曲线显示出较高的能量释放性能。该合成策略可为制备其他金属纳米颗粒提供有效途径，在金属化炸药和高能释放结构等领域具有潜在的应用价值。
The application of aluminum nanoparticle is limited due to its passivation Al2O3layer even though it owns extreme specific surface and high reaction activity. In this work, the aluminum nanoparticles were modified via in situ grafting onto energetic glycidyl azide polymer (GAP) to improve the stability and energy-releasing performance. The results showed that GAP was grafted on the nano-aluminum surface with chemical bonds of –O–(CO–NH)– formed, and the thickness of shell layer of GAP could be tuned by changing the relative ratio of reactants. Furthermore, modified nanoparticles show hydrophobicity with static water contact angle changing from 20.2° to 142.4°. Significant increasing stability of aluminum nanoparticles is obtained in hot water, which is evidenced by that around 10 wt% of modified aluminum is reacted after 210 min. Based on the core–shell configurations, (Al@GAP)/fluorine composites were prepared. The violent combustion phenomenon and high release rate profiles revealed high energy-releasing performance with the assistance of GAP. This synthetic strategy may provide an effective approach to prepare other metal nanoparticles, and possess potential application value in the fields of metallized explosives and high-energy structure with energy release.
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DOI：
10.1002/prep.201100138
发表时间：
2012-04
期刊：
Propellants, Explosives, Pyrotechnics
影响因子：
--
作者：
V. Manner;Steven J. Pemberton;Jake A. Gunderson;Tommy J. Herrera;J. M. Lloyd;Patrick J. Salazar;
通讯作者：
V. Manner;Steven J. Pemberton;Jake A. Gunderson;Tommy J. Herrera;J. M. Lloyd;Patrick J. Salazar;
影响因子：
2.7
作者：
W. Shin;D. Han;Yohan Park;H. Hyun;H. Sung;Y. Sohn
通讯作者：
W. Shin;D. Han;Yohan Park;H. Hyun;H. Sung;Y. Sohn
影响因子：
5.2
作者：
S. Valliappan;J. Swiatkiewicz;J. Puszynski
通讯作者：
S. Valliappan;J. Swiatkiewicz;J. Puszynski
影响因子：
8.6
作者：
Jouet, RJ;Warren, AD;Zachariah, MR
通讯作者：
Zachariah, MR
影响因子：
1.7
作者：
C. Ruby;R. Ott;F. Huang;M. Weaver;J. Barnard
通讯作者：
C. Ruby;R. Ott;F. Huang;M. Weaver;J. Barnard