Results 101 to 110 of about 3,611 (217)

Burning Characteristics of Ammonium-Nitrate-Based Composite Propellants with a Hydroxyl-Terminated Polybutadiene/Polytetrahydrofuran Blend Binder

International Journal of Aerospace Engineering, 2012
Ammonium-nitrate-(AN-) based composite propellants prepared with a hydroxyl-terminated polybutadiene (HTPB)/polytetrahydrofuran (PTHF) blend binder have unique thermal decomposition characteristics.
Makoto Kohga, Tomoki Naya, Kayoko Okamoto   +2 more
doaj   +1 more source

Synthesis and characterization of hydroxyl-terminated polybutadiene modified low temperature adaptive self-matting waterborne polyurethane. [PDF]

RSC Adv, 2023
Liu J, Yang D, Li S, Bai C, Tu C, Zhu F, Xin W, Li G, Luo Y.   +8 more
europepmc   +1 more source

Hydroxyl-terminated polybutadiene liner curing process monitoring using non-collinear ultrasonic wave mixing technique

AIP Advances
The Hydroxyl-Terminated Polybutadiene (HTPB) liner in solid rocket motors is a viscoelastic material formed through the polymerization and gelation of HTPB and toluene diisocyanate.
Dawei Wang, Yuxin Xie, Xinyi Gao
doaj   +1 more source

Study on the low shrinkage rate UV adhesiveof dual curing mechanism [PDF]

, 2015
紫外光固化胶黏剂是一种新兴的胶黏剂产品，因其具有高效、环保、经济 等特点，被广泛应用于多种工业领域。但目前国内对紫外光固化胶黏剂研究较 少，所研制的紫外光固化胶黏剂主要为自由基固化型，固化收缩率大多在5%以 上，而用于触摸屏、大屏幕彩电、智能手机屏幕等行业的紫外光胶黏剂要求固 化收缩率≤3%。本文研究内容旨在利用双重固化机理降低紫外光固化胶黏剂的 固化收缩率，制备固化收缩率小于3%的紫外光固化胶黏剂。 本文利用端羟基聚丁二烯、过氧化氢和乙酸为原料，成功制备了兼具不饱 和双键和环氧基的环氧聚丁二烯 ...
陆嘉
core  

Hexogen Coating Kinetics with Polyurethane-Based Hydroxyl-Terminated Polybutadiene (HTPB) Using Infrared Spectroscopy. [PDF]

Polymers (Basel), 2022
Wibowo HB, Sitompul HRD, Budi RS, Hartaya K, Abdillah LH, Ardianingsih R, Wibowo RSM.   +6 more
europepmc   +1 more source

Lipid-absorbing Polymers [PDF]

The removal of bile acids and cholesterol by polymeric absorption is discussed in terms of micelle-polymer interaction. The results obtained with a polymer composed of 75 parts PEO and 25 parts PB plus curing ingredients show an absorption of 305 to 309%,
Marsh, H. E., Jr., Wallace, C. J.
core   +1 more source

Investigating Premature Ignition of Thruster Pressure Cartridges by Vibration-Induced Electrostatic Discharge [PDF]

, 2010
Pyrotechnic thruster pressure cartridges (TPCs) are used for aeroshell separation on a new NASA crew launch vehicle. Nondestructive evaluation (NDE) during TPC acceptance testing indicated that internal assemblies moved during shock and vibration testing
Saulsberry, Regor, Woods, Stephen S.
core   +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

Design, synthesis and curing mechanism of two novel photothermal dual-curing adhesives for propellants and explosives

FirePhysChem
Photothermal dual-curing adhesive is not only required to realize the basic curing function, but also has the characteristics of rapid setting and strong curing, which possesses a vital role in the molding speed, stability and structure integrity for 3D ...
Bojun Tan, Hongchang Mo, Jing Zhang, Yujia Wen, Binghui Duan, Xiaozhe Yang, Xianming Lu, Ning Liu   +7 more
doaj   +1 more source

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

Defence Technology
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   +1 more source