Results 61 to 70 of about 2,076,710 (341)

Substituição de amianto por silicato de alumínio e grafite expansível em compósito de poliuretano utilizado em motor-foguete Substitution of asbestos for aluminosiliacate and expandable graphite in polyurethane composites used in rocket motors

Polímeros, 2007
Compósitos de poliuretano e amianto (liner) são utilizados como revestimento interno em paredes de motor-foguete, conferindo proteção térmica e garantindo a adesão entre o propelente e as paredes do motor.
Henrique Crespim, Margarete F. P. Azevedo, Luis H. David, Silvana N. Cassu, Vera L. Lourenço   +4 more
doaj   +1 more source

Research progress and development trend of mine fire prevention and extinguishing materials

Meikuang Anquan, 2023
Mine fire has always been one of the disasters that restrict coal mining and endanger the life safety of underground workers in China, and will cause great waste of resources.
Yingxin ZHANG, Kang YANG, Rijun LI, Jiawei WANG, Lu TANG   +4 more
doaj   +1 more source

Mass production of graphene oxide from expanded graphite [PDF]

Materials Letters, 2013
In a deviation from the conventional Hummers method, a spontaneous expansion approach was introduced with expanded graphite as the precursors. The intercalating agent (H2SO4) was able to penetrate into the expanded graphite; this had further expanded the graphite and as a result, a foam-like intermediate was produced.
Sun, Ling, Fugetsu, Bunshi
openaire   +3 more sources

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Anisotropy of expandable graphite to explain its behavior as a flame-retardant

Journal of fire sciences, 2020
Expandable graphite is used as a flame-retardant in polymers. Its expansion on heating leads to a network of graphite worms which acts as a thermal barrier. However, mechanisms of action of worms are not yet well known.
T. Bensabath, J. Sarazin, S. Bourbigot
semanticscholar   +1 more source

Multivariate Statistical Analysis of Phyllite Samples Based on Chemical (XRF) and Mineralogical Data by XRD [PDF]

, 2012
It is presented the results obtained of a multivariate statistical analysis concerning the chemical and phase composition, as a characterization purpose, carried out with 52 rock phyllite samples selected from the provinces of Almería and Granada (SE ...
Garzón Garzón, Eduardo, Ruiz Conde, Antonio, Sánchez Soto, Pedro José   +2 more
core   +1 more source

Population of Nonmetallic Inclusions in Liquid High‐Silicon Electrical Steel in Contact With MgO–C Refractories Based on Recyclates and Environmentally Friendly Binders

Advanced Engineering Materials, EarlyView.
The formation of nonmetallic inclusions (NMIs) was investigated in this study, carrying out immersion tests for 30 min at a temperature of 1600°C with liquid high‐silicon electrical steel (Si ≈ 3 mass‐%) and different MgO–C refractories. Conventional MgO–C refractories were considered, as well as MgO–C refractories containing MgO–C recyclate and ...
Lukas Neubert, Matheus Roberto Bellé, Florian Kerber, Dinesh Kumar Gunasekar, Hans‐Jörn Weddige, Christos G. Aneziris, Olena Volkova   +6 more
wiley   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Real-Time Measurement on the Heat Release Property of Titanium Blended with Different Carbon Allotropes, under Externally Constant Heat Flux

Metals, 2019
Ti/C blended powder is commonly employed as an initiating combustion agent for preparing calcium aluminate; a dedicated test system is exploited for real-time examining of the heat release of Ti/C blended powder during combustion under atmosphere ...
Yachao Wang, Jiangping Zhao
doaj   +1 more source

Preparation and properties of multicomponent halogen-free flame retardant natural rubber based on phosphoxanthrene derivatives

Hecheng xiangjiao gongye, 2023
The flame retardant natural rubber （NR） vulcanizates were prepared by adding phosphoxanthrene/triazine bibase synergic flame retardant（TGD）, dimethyl methyl phosphonate （DMMP）, expandable graphite （EG） and aluminum hydroxide （ATH） to NR.
"WANG Jian1, WANG Long1, ZHANG Zheng1, JIA Yu-hui2, SHEN Rui-bing2, HAO Ming-zheng2, LIANG Yu-rong1,2"
doaj   +1 more source