بررسی عوامل مؤثر در بهبود خواص عملکردی و حساسیتی MOFهای پرانرژی (HE-MOF)
Authors
Abstract:
High Energy Density Materials (HEDMs) are a new generation of high-energetic materials with high-performance and safety and consist of several different types with different properties. One category of this kind of HEDMs explosives are high energy metal organic frameworks (HE-MOFs) that have more appropriate performance and safety compared to conventional explosives (HEMs) and even other HEDMs. These compounds consist of a metal ion (transition element) and high-energy ligands that are located in the metalchr(chr('39')39chr('39'))s coordination space. Various factors are involved in improving the performance and sensitivity of high energy metal organic frameworks (HE-MOFs). Factors such as type of structure, ligand, central metal ion, molecular structure strain, and removal of trapped solvent in the network are affecting factors that enhance the performance. The parameters such as bond dissociation energy (BDE) inter/intra molecular interactions, free space in the crystalline network and encapsulated sensitive groups, are effective in reducing sensitivity and enhancing the safety of high energy metal organic frameworks. In this paper, the effective factors in the performance and sensitivity of HE-MOFs have been investigated.
similar resources
کوکریستالیزاسیون مواد پرانرژی: از مهندسی مولکولی تا بهبود خواص
A Cocrystallization is an attractive molecular engineering approach for realizing improved energetic materials (explosives, propellants, and pyrotechnics). When two or more neutral species are combined to form a new structure, cocrystalline materials are created with distinct solid-state properties. As the performance criteria of energetic materials (explosive power, thermal stability, and phys...
full textسنتز و بررسی عوامل مؤثر بر خواص ساختاری لاستیک EPDM
ترپلیمرهایی که لاستیک EPDM نامیده میشوند، با کاتالیست پایه وانادیم VOCl3/Al2Et3Cl3 با تغییر نسبت کاتالیست به کوکاتالیست (Al/V) و غلظت مونومر سوم (دیان)، که در این بررسی (Ethylidene Norborene (ENB است، تهیه شدهاند. برای بررسی ساختار پلیمرها از اسپکتروسکوپی مادون قرمز (FTIR)، اندازهگیری ویسکوزیته مونی (125oC و ML1+4)، تعیین جرم مولکولی به روش ویسکومتری و تجزیه وزنسنجی حرارتی استفاده شد. مشاه...
full textبررسی خواص کیفی، عملکردی و زیستفعالی در گندم سنزده
باوجود تمام پیشرفتهای حاصله در زمینۀ کنترل آفتها، سن همچنان در اکثر مناطق کشت گندم ایران یک آفت خطرناک محسوب میشود. این حشره با هیدرولیز پروتئینها توسط پروتئیناز بزاق خود باعث ایجاد خصوصیات ضعیف رئولوژیکی و تولید نان با حجم کم و بافت نامناسب میگردد. ازطرفی هیدرولیز پروتئینها میتواند در بهبود خواص عملکردی، تولید پپتیدهای زیستفعال و بهبود سیستم فیزیولوژیک بدن نقش مؤثری داشته باشد. در این...
full textشناسایی عوامل مؤثر بر بهبود شایستگی مدیران
In order to develop a competency development model for the staff managers of the National Iranian Gas Company (NIGC), this research was performed using exploratory and combined methods. In the qualitative analysis phase of the study, 12 professionals were selected. Semi-structured interviews were conducted and in a two-step analysis the qualitative data were identified. Following that, a focal ...
full textDegenerate Four Wave Mixing in Photonic Crystal Fibers
In this study, Four Wave Mixing (FWM) characteristics in photonic crystal fibers are investigated. The effect of channel spacing, phase mismatching, and fiber length on FWM efficiency have been studied. The variation of idler frequency which obtained by this technique with pumping and signal wavelengths has been discussed. The effect of fiber dispersion has been taken into account; we obtain th...
full textبررسی خواص مکانیکی و عملکردی خرج ترموباریک PBXIH-135
Thermobaric charge PBXIH-135 is an explosive with desirable mechanical and safety characteristics. In present research, this PBX charge is provided on scale of 2 kg and its physical, mechanical, sensitivity and performance parameters were investigated. Prepared sample has density of 1.64 g/cm3, hardness of 53 Shore A, tensional strength of 1.68 MPa and strain of 44%. Impact and friction sensiti...
full textMy Resources
Journal title
volume 15 issue 1
pages 1- 10
publication date 2019-03
By following a journal you will be notified via email when a new issue of this journal is published.
No Keywords
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023