Glycidyl Azide Polymer-Based Polyurethane Vitrimers with Disulfide Chain Extenders

2021 ◽  
Author(s):  
Yaofang Hu ◽  
Gang Tang ◽  
Yunjun Luo ◽  
Shumeng Chi ◽  
Xiaoyu Li

Glycidyl azide polymer (GAP) is an important type of energetic polymer and considered to be the most promising candidate for the polymeric binders for next generation of solid propellants. However,...


2016 ◽  
Vol 48 (8) ◽  
pp. 728-738 ◽  
Author(s):  
Zaijuan Zhang ◽  
Nan Luo ◽  
Jingke Deng ◽  
Zhen Ge ◽  
Yunjun Luo

A kind of bonding functional energetic thermoplastic elastomers (ETPEs) were synthesized as the binder of solid propellants using the mixture of chain extenders including diethyl bis(hydroxymethyl) malonate (DBM). The results showed that the mechanical properties of ETPEs decreased with increasing percent of DBM in the chain extenders. On the contrary, the work of adhesion between solid ingredients hexogen (RDX) and ETPEs increased. In order to test the comprehensive impacts of two elements, the RDX/ETPE propellants were prepared. The results showed when the percent of DBM was 25%, the overall properties of the propellants were optimum.



RSC Advances ◽  
2015 ◽  
Vol 5 (79) ◽  
pp. 64478-64485 ◽  
Author(s):  
Abbas Tanver ◽  
Mu-Hua Huang ◽  
Yunjun Luo ◽  
Syed Khalid ◽  
Tariq Hussain

High energetic propellants with synergistic mechanical strength are the prerequisites for aerospace industry and missile technology; though glycidyl azide polymer (GAP) is a renowned and a promising energetic polymer which shows poor mechanical and low-temperature properties.



Author(s):  
Craig Whitaker ◽  
Patrick Caton ◽  
Ben Alford ◽  
Kendell Graser ◽  
Lawson Stancil ◽  
...  


Author(s):  
Yutaka Wada ◽  
S. Hatano ◽  
Ayana Banno ◽  
Yo Kawabata ◽  
Hiroshi Hasegawa ◽  
...  


Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 278 ◽  
Author(s):  
Jinghui Hu ◽  
Weiqiang Tang ◽  
Yonghui Li ◽  
Jiyu He ◽  
Xiaoyan Guo ◽  
...  

A new energetic curing reagent, Glycidyl azide polymer grafted tetrafunctional isocyanate (N100-g-GAP) was synthesized and characterized by FT-IR and GPC approaches. Polytriazole polyethylene oxide-tetrahydrofuran (PTPET) elastomer was prepared by N100-g-GAP and alkynyl terminated polyethylene oxide-tetrahydrofuran (ATPET). The resulting PTPET elastomer was fully characterized by TGA, DMA, FTIR and mechanical test. The above analysis indicates that PTPET elastomers using N100-g-GAP as curing reagent have the potential for use in propellants. The overall formulation test of the composite propellants shows that this curing system can effectively enhance mechanical strength and bring a significant improvement in the interface interaction between the RDX & AP particles and binder matrix.



2009 ◽  
Vol 114 (6) ◽  
pp. 3360-3368 ◽  
Author(s):  
S. K. Manu ◽  
T. L. Varghese ◽  
S. Mathew ◽  
K. N. Ninan


Author(s):  
Vyacheslav Sivakov ◽  
Sergey Pavlov ◽  
Vladimir Smirnov ◽  
Sergey A. Kislenko

The aprotic lithium-air battery is a promising candidate for the next-generation energy storage system, but its practical performance is still low. The addition of water to an electrolyte can substantially...



2019 ◽  
Vol 237 ◽  
pp. 152-155 ◽  
Author(s):  
Yapeng Ou ◽  
Qian Zhao ◽  
Wei Zhang ◽  
Bi Zhang ◽  
Shi Yan ◽  
...  


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