Results 81 to 90 of about 4,593 (217)

Large Supramolecular Patterns in Photoactive Chiral Liquid Crystals for Light‐Controllable Soft Micromechanical Systems

Small Structures, Volume 6, Issue 12, December 2025.
Revolving chiral patterns are induced by an ultraviolet light beam in frustrated films of photoactive chiral nematics. The uniformity and regularity of the rotation depend on the ratio of the pattern size to the diameter of the light spot. The rotation is interrupted when this ratio reaches about eight.
Darina Darmoroz, Anastasiia Piven, Tetiana Orlova   +2 more
wiley   +1 more source

Research on mechanical properties of HTPB propellants

Journal of Physics: Conference Series
Abstract Slat propellants with different sizes and shapes are designed to investigate the strength criteria of HTPB propellants. According to the calculation and simulation results, with the increase of multiple, the designed size slat specimens can achieve equivalent biaxial tensile stress ratios of 1:2, 1:2.5, 1:3, 1:3.5, and 1:4 under
Chang Liu, Zhiqiang Chang, Chao Li, Fujun He, Yake Wu   +4 more
openaire   +1 more source

Sustainable Synthesis of Polyurethane Using Hydroxyl‐Terminated Polybutadiene (HTPB) Derived From the Degradation of Butadiene Rubber with Fatty Alcohol

Macromolecular Materials and Engineering, Volume 310, Issue 11, November 2025.
This study proposes a synthesis route for polyurethanes (PUs) derived from bio‐based polyols. The polyols were obtained through metathesis depolymerization of butadiene rubber using fatty alcohol (a castor oil derivative) as a chain transfer agent to produce hydroxyl‐terminated polybutadiene (HTPB).
Manuel Burelo, Cecilia D. Treviño‐Quintanilla, Jonathan E. De la Peña‐González, Edgar A. Franco‐Urquiza, Enrique Martínez‐Franco, Gabriel Luna‐Bárcenas, Diego A. Bravo‐Alfaro, Alice Y. Yau, Thomas Stringer   +8 more
wiley   +1 more source

The Legionella pneumophila chaperonin – an unusual multifunctional protein in unusual locations

Frontiers in Cellular and Infection Microbiology, 2011
The L. pneumophila chaperonin, HtpB, was discovered as a highly immunogenic antigen, only a few years after the identification of L. pneumophila as the causative agent of Legionnaires’ disease.
Rafael A. eGarduno, Audrey eChong, Gheyath K. Nasrallah, David S. Allan   +3 more
doaj   +1 more source

Effect of Microstructure on HTPB Based Polyurethane (HTPB-PU) [PDF]

Journal of Materials Science and Engineering B, 2015
null Abhijit Dey, null Md Abdul Shafeeuulla Khan, null Javaid Athar, null Arun Kanti Sikder, null Santanu Chattopadhyay   +4 more
openaire   +1 more source

THE ROLE OF ANTIOXIDANT ON PROPELLANT BINDER REACTIVITY DURING THERMAL AGING. doi: 10.5028/jatm.2010.02027310

Journal of Aerospace Technology and Management, 2011
Thermal aging of hydroxy-terminated polybutadiene (HTPB) stabilized with 2,6-di(tert-butyl)hydroxytoluene (BHT) was carried out at 60°C from 1 to 11 weeks.
Luciene Dias Villar, Rafael Filadelfo da Silva, Milton Faria Diniz, Marta Ferreira K. Takahashi, Luis Claúdio Rezende   +4 more
doaj  

The role of antioxidant on propellant binder reactivity during thermal aging [PDF]

Journal of Aerospace Technology and Management, 2010
Thermal aging of hydroxy-terminated polybutadiene (HTPB) stabilized with 2,6-di(tert-butyl)hydroxytoluene (BHT) was carried out at 60°C from 1 to 11 weeks.
Luciene Dias Villar, Rafael Filadelfo da Silva, Milton Faria Diniz, Marta Ferreira K. Takahashi, Luis Cláudio Rezende   +4 more
doaj  

Application of Al/B/Fe2O3 Nano Thermite in Composite Solid Propellant

Bulletin of Chemical Reaction Engineering & Catalysis, 2016
Hydroxyl-terminated polybutadiene (HTPB) propellant were prepared with different content of Al/B/Fe2O3 nano thermite, and the mechanical, thermal and energetic performances were studied. Al/B/Fe2O3 nano thermite exhibited good compatibility with HTPB and
Jingke Deng, Guoping Li, Lianhua Shen, Yunjun Luo   +3 more
doaj   +1 more source

Long term investigation of bonding characteristics between PVC based inhibitor and HTPB/IPDI based propellant [PDF]

Scientific Technical Review
Bonding characteristics between extruded polyvinyl chloride (PVC) inhibitor and casted hydroxyl terminated polybutadiene/isophorone isocyanate (HTPB/IPDI) propellant, investigated in a long period of time, are topics of this paper. Basic statements about
Radulović Jovan, Milojković Aleksandar
doaj   +1 more source

Catalytic effects of transition metal oxides on HTPB-based fuel polymer matrices

FirePhysChem
Low regression rate due to difficult pyrolysis is a major challenge in the practical application of terminated hydroxyl‑terminated polybutadiene (HTPB)-based fuels in hybrid rocket propulsion.
Hongwei Gao, Hongsheng Yu, Yue Tang, Xiaodong Yu, Wei Zhang, Luigi T. DeLuca, Ruiqi Shen   +6 more
doaj   +1 more source