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Recommended Papers for: Foams

Total Papers Found: 16

Heat transfer in microcellular polystyrene/multi-walled carbon nanotube nanocomposite foams

Polystyrene/multi-walled carbon nanotube (PS/MWCNT) nanocomposite foams were prepared in order to determine if these foams exhibited a reduced thermal conductivity in comparison to pristine polystyrene foam. The thermal conductivity of foams can be broken down into three modes of conduction: gas conductivity, solid conductivity, and radiative conductivity. The PS/MWCNT foams had decreased gas and radiative conductivities in comparison to the pristine PS foam; however, the solid conductivity ...

Author(s): , , , , ,

Tailoring the structure of cellular vitreous carbon foams

The authors set out to prepare cellular vitreous carbon (CVC) foams with varying thermal and physical properties. This was accomplished by using tannin-based resin modified by different isocyanates in varying amounts. Three different experimental procedures were used to prepare foams with different physical and thermal properties. Physical properties of the foams studied include density, as well as pore volume, pore size and cell diameter. The transient plane source (TPS) technique ...

Author(s): , , , , ,

Functionalized graphene sheet filled silicone foam nanocomposites

The authors report the synthesis of a novel functionalized graphene sheet (FGS)/silicone porous nanocomposite with varying concentrations of FGS. The physical and thermal properties of the synthesized nanocomposites were studied in depth. SEM and TEM were used to elucidate the physical microstructure of the materials, and the transient plane source (TPS) technique was used to measure thermal conductivity. The nanocomposite showed an increased thermal conductivity as compared to the ...

Author(s): , , , ,

Glass foams from dismantled cathode ray tubes

Glass components recovered from dismantled cathode ray tubes (CRTs) are very difficult to recycle or reuse and so other methods of using these glass components must be found to prevent environmental problems. Through the mixing of the recovered glass with calcium carbonate powder, glass foams can be synthesized that have applications in thermal and acoustic insulation. The various effects on the sintering process such as heating rate and holding time ...

Author(s): ,

Processing of microcellular cordierite ceramics from a preceramic polymer

Researchers have developed an innovative processing route for producing microcellular cordierite ceramics within a three-step method. A) constructing ceramic-filled foams by heating a mixture of polysiloxane, expandable microspheres, talc, and alumina B) cross-linking the foamed body, and C) with the use of sintering, convert the body into microcellular cordierite ceramics....

Author(s): , , ,