Results 11 to 20 of about 883 (166)

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

open access: yesAIP 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   +2 more
doaj   +1 more source

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

open access: yesMaterials 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

Comparative Assessment of Stabilised Polybutadiene Binder under Accelerated Ageing

open access: yesJournal of Aerospace Technology and Management, 2016
Polybutadiene elastomers are versatile materials, being employed at several applications from rocket propellant binder to adhesives and sealants. The elastomers derived from hydroxyl-terminated polybutadiene are usually stabilised with antioxidants to ...
Luiz Felipe Cannaval Sbegue   +1 more
doaj   +3 more sources

Effect of hydroxyl terminated polybutadiene number-averaged molecular weight on chemorheological behavior of polyurethane networking [PDF]

open access: yesPolyolefins Journal, 2023
The time available for proper casting of the polyurethane (PU) system after isocyanate addition (called pot life) affects the macrodiol microstructure. In this research, the effect of molecular weight ( Mn ) of hydroxyl terminated polybutadiene (HTPB) as
Abolfazl Deylami, Abbas Kebritchi
doaj   +1 more source

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

open access: yesIndonesian 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   +3 more
doaj   +1 more source

Nanocompósitos ternários de amido termoplástico e poli(Butadieno maleatado)

open access: yesQuímica Nova, 2012
Liquid polybutadiene (PBLH) was modified with maleic anhydride (MA). The material (PBLHM) was characterized and used to prepare hybrid materials by blending with glycerol-plasticized cassava starch (TPS) and an organophilic clay at 5 wt% content ...
Regina F. Ó, Cristina T. Andrade
doaj   +1 more source

A natureza das substâncias de referência na avaliação de massas molares de resinas PBLH por meio de cromatografia de exclusão por tamanho e osmometria de pressão de vapor The nature of standards in the evaluation of molar mass of PBLH resins by means of size exclusion chromatography and vapor pressure osmometry

open access: yesQuímica Nova, 1997
The SEC and VPO behaviour of hydroxyl-terminated polybutadiene resins was investigated using toluene as solvent and polybutadiene and polystyrene as standards.
Marta Ferreira Koyama Takahashi   +2 more
doaj   +1 more source

A Step-by-Step Equivalent Microprediction Method for the Mechanical Properties of Composite Solid Propellants considering Dewetting Damage

open access: yesInternational Journal of Aerospace Engineering, 2022
Reliable prediction of the macromechanical properties of composite solid propellants in the microscale can accelerate the development of propellants with high mechanical properties.
Huiru Cui   +5 more
doaj   +1 more source

Radiation-induced pyrolysis of solid fuels for ramjet application

open access: yesPropulsion and Power Research, 2016
A wide variety of hydroxyl-terminated polybutadiene (HTPB) based fuels are experimentally assessed in anaerobic reaction. In this study HTPB pyrolysis is investigated using a CO2 laser as the energy source.
Trevor D. Hedman
doaj   +1 more source

Vegetable Oil-Based Materials for Drug Delivery Systems and Wound Dressings. [PDF]

open access: yesMacromol Biosci
Renewable resources like vegetable oils are increasingly explored for biomaterial production in biomedical applications. Their monoglycerides and triglycerides inherently possess functions or can be chemically modified to introduce functional groups suitable for polymerization, yielding biomaterials with desirable properties such as flexibility ...
Favre LM   +2 more
europepmc   +2 more sources

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