Results 31 to 40 of about 967 (177)

Molecular simulation study on the protective mechanism of three kinds of HTPB propellant antioxidants

FirePhysChem, 2022
To investigate the protection mechanism and performance of N-phenyl-1-naphthalenamine (antioxidant A), N-phenyl-2-naphthalene (antioxidant D), and N, N'-diphenyl-1,4-phenylenediamine (antioxidant H) in the HTPB-TDI matrix, quantum chemistry (QC ...
Lingze Kong, Kehai Dong, Gaochun Li, Chuanlu Yang, Shuaiguang Lai, Yanyu Qu   +5 more
doaj   +1 more source

Burning Properties of Uncured HTPB Propellant

Journal of the Korean Society of Propulsion Engineers, 2016
ABSTRACT In this study, we examined the burning rate of the uncured pr opellant (with and without a curing agent application) in order to inspect the process of the HTPB solid propellant. The burning rate of the uncured propellant, that did not contain the curing agent, was approximately 9.7 mm/s at 1000 psi. In relation to the curing time, the burning
Nakhyun Kim, Jungeun Kim, Myungpyo Hong
openaire   +2 more sources

Kinetic study of HTPB (Hydroxyl Terminated Polybutadiene) Synthesis Using Infrared Spectroscopy

Indonesian Journal of Chemistry, 2020
A kinetic study of HTPB synthesis by radical polymerization of butadiene with hydrogen peroxide initiator was conducted using infrared spectroscopy. HTPB conversion was determined based on the conjunction termination rate constant, and all polymerization
Heri Budi Wibowo, Widhi Cahya Dharmawan, Ratih Sanggra Murti Wibowo, Adi Yulianto   +3 more
doaj   +1 more source

Cross-linking density and aging constitutive model of HTPB coating under prestrain thermal accelerated aging

Defence Technology, 2020
In order to study the cross-linking density and aging constitutive relationship of HTPB coating during storage, the thermal accelerated aging tests at 0%, 3%, 6% and 9% prestrains were carried out.
Yong-qiang Du, Jian Zheng, Chao Xiong
doaj   +1 more source

Architecting nano‐Al/HMX/CuO energetic micro‐units unlocks superior interface and highly efficient combustion

InfoMat, EarlyView.
Improving the dispersion of nano‐aluminum is of great importance in explosives and propellants. The spherical Al/HMX/CuO energetic micro‐units were prepared using microchannel technology, which significantly improved the uniformity and dispersion of nano‐Al. It also enhanced the mass and heat transfer efficiency between the fuel and oxidizer components,
Gazi Hao, Tianxu Xi, Yong Kou, Cheng Zhang, Ronghuan Yang, Jiahao Yu, Qiangqiang Lu, Hongyu Yang, Chong Chen, Lei Xiao, Jun Di, Fengqi Zhao, Wei Jiang   +12 more
wiley   +1 more source

Enhanced gas and plasticizer barrier HTPB composite liner implanted with parallel orientation Fe3O4/RGO nanosheets by an ultrasound/magnet-coassisted method

Ultrasonics Sonochemistry
It is of great significance to prepare liners with excellent inhibition of energetic plasticizer migration and gas barrier properties. Here, we have successfully prepared magnetic iron oxide decorated reduced-graphene-oxide nanosheets (MRGO) by using ...
Zhehong Lu, Qiang Zhou, Yulong Zhang, Abdullah Atya, Tengyue Zhang, Guangpu Zhang, Yanan Zhang, Guigao Liu, Wei Jiang, Yubing Hu   +9 more
doaj   +1 more source

Screening Surface Modifications to Benzene to Improve Solubility in Hydroxyl‐Terminated Polybutadiene (HTPB)—A DFT Demonstration

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT The objective of this paper is to demonstrate the advantage of computationally pre‐screening surface‐modifying material candidates, using density functional theory (DFT), to inform experimental synthesis and formulation efforts. This demonstration focuses on improving the solubility of benzene‐based materials in hydroxyl‐terminated ...
Samantha E. Knoth
wiley   +1 more source

Machine Learning for Thermodynamic States of Notional Nonideal Energetic Mixtures

Propellants, Explosives, Pyrotechnics, EarlyView.
. ABSTRACT Currently, modeling the thermodynamic states in the reaction zone of a detonating energetic mixture entails iteratively solving a set of coupled differential equations that require detailed material property information or models whose empirical parameters must be physically measured.
Sangeeth Balakrishnan, Jesse Hearn, Francis G. VanGessel, Brian C. Barnes, Ruth Doherty, William Wilson, Ryan Ciufo, Peter W. Chung   +7 more
wiley   +1 more source

The Synergistic Effect of Fe-Based MOFs and HTPB on AP Decomposition in Solid Propellants

Solids
Many factors and their mutual interaction between catalysts and AP/HTPB composite solid propellant induce the complexity in the combustion. Among them, we prepared two Fe-based MOFs as catalysts and investigated their catalytic effects and mechanism on ...
Qian Guo, Jie Wang, Yanchun Li, Ramón Artiaga   +3 more
doaj   +1 more source

Construction of pendant group functional HTPB and efficient light-harvesting carrier

Polymer Testing, 2023
The synthesis, characterization and application of the polymers with functional pendant groups have always been hot topics in the polymer field. A kind of functional polybutadiene (HTPB) derivative containing anthryl and azide groups was synthesized by ...
Zichao Wang, Xuan Zhang, Zhenzhen Wu, Tong Wang, Yan Li, Liusiyuan He, Xiuzhong Zhu, Xiaodong Fan   +7 more
doaj   +1 more source