Results 11 to 20 of about 11,287 (255)

Rheological Properties of Composite Polymer Liner Based on Hydroxyl‐ Terminated Polybutadiene [PDF]

Journal of Aerospace Technology and Management, 2020
An experimental study to determine the dependence of the viscosity and shear stress of hydroxyl-terminated polybutadiene (HTPB) and dimeryl diisocyanate (DDI) liner on curing time is presented. Viscosity and shear-stress were measured by HAAKE RheoStress
Igor Sapozhnikov, Victor Chernov
doaj   +5 more sources

Effect of hard segment content on the phase separation and properties of hydroxyl-terminated polybutadiene thermoplastic polyurethane

Polymer Testing
Thermoplastic polyurethane (TPU) possesses a distinctive microphase separation structure resulting from the thermodynamic incompatibility between its soft and hard segments.
Boxin Liu, Zhihao Niu, Zhanglei Wang, Yimin Wang, Hua Zou, Xiuying Zhao, Shikai Hu   +6 more
doaj   +2 more sources

Chemorheological Kinetic Modeling of Uncatalyzed Hydroxyl‐Terminated Polybutadiene and Isophorone Diisocyanate

Macromolecular Materials and Engineering
Catalysts are often employed to enable nonisothermal reaction kinetic studies when tracking cure progression of polyurethane reactions. However, when quickly reacting, catalyzed materials are prepared through mixing followed by the addition of fillers or
John P. Reynolds, Tiffany N. Thompson, Cailean Q. Pritchard, Michael D. Schulz, John J. La Scala, Michael J. Bortner   +5 more
doaj   +2 more sources

Fatigue failure of prefabricated crack HTPB(hydroxyl-terminated polybutadiene) propellant under strain control [PDF]

Scientific Reports
In an effort to elucidate the fatigue behavior of hydroxyl-terminated polybutadiene (HTPB) propellant with prefabricated cracks under strain-controlled conditions, a comprehensive experimental study was conducted employing an MTS fatigue testing machine.
Genfeng Li, Bo Gao, Hao Hu, Ruifu Cui, Jiwei Feng, Jian He   +5 more
doaj   +2 more sources

Utilization of steric hindrance of alkyl lithium-based initiator to synthesize high 1,4 unit-containing hydroxyl- terminated polybutadiene [PDF]

Royal Society Open Science, 2018
A novel alkyl lithium-based initiator with relatively large steric hindrance, tert-butyldimethylsiloxydimethylpropyl lithium (TBDMSODPrLi), was designed and synthesized.
Xin Min, Xiaodong Fan, Jie Liu
doaj   +2 more sources

Investigation of hydroxyl-terminated polybutadiene propellant breaking characteristics and mechanism impacted by submerged cavitation water jet

Defence Technology, 2023
A submerged cavitation water jet (SCWJ) is an effective method to recycle solid propellant from obsolete solid engines by the breaking method. Solid propellant’s breaking modes and mechanical process under SCWJ impact are unclear.
Wenjun Zhou, Meng Zhao, Bo Liu, Youzhi Ma, Youzhi Zhang, Xuanjun Wang   +5 more
doaj   +2 more sources

Diffusion of plasticizer in a solid propellant based on hydroxyl-terminated polybutadiene [PDF]

Polímeros, 2010
The aim of this work was to determine the dioctyl azelate (DOZ) plasticizer diffusion coefficient (D) for samples containing the interfaces of rubber, liner and solid composite propellant based on hydroxyl-terminated polybutadiene (HTPB).
Juliano Libardi, Sergio P. Ravagnani, Ana M. F. Morais, Antonio R. Cardoso   +3 more
doaj   +4 more sources

Performance and Kinetics Study of Self-Repairing Hydroxyl-Terminated Polybutadiene Binders Based on the Diels–Alder Reaction [PDF]

Polymers, 2017
Min Xia, Guoping Li, Yunjun Luo
exaly   +2 more sources

Experimental and simulation research on microscopic damage of HTPB propellant under tension-shear loading

AIP Advances, 2022
In order to study the influence of loading conditions on propellant mesoscopic failure morphology, scanning electron microscopy was carried out to observe the morphology of the failure section of a hydroxyl-terminated polybutadiene propellant under ...
Jia-yuan Cui, Hong-fu Qiang, Jia-xiang Wang   +2 more
doaj   +1 more source

Effect of hyperbranched polyesters on HTPB polyurethane curing kinetic [PDF]

Materials Research, 2013
Effects of hyperbranched polyesters on kinetics of the reaction between hydroxyl-terminated polybutadiene (HTPB) and isophorone diisocyanate (IPDI) were investigated.
Xuejing Song, Luo Yunjun
doaj   +1 more source