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Recommended Papers for: thermal insulation

Total Papers Found: 58

Porous thermal insulation materials derived from fly ash using a foaming and slip casting method         

Coal fly ash was used as the base material for the formation of thermal insulation materials. The porosity of the produced materials ranged from 86.3-94.5 vol. %. The insulating materials were prepared by ball milling, followed by foaming assisted by the addition of K12, casting and drying, and finally sintering. No harmful chemicals were released to the environment during their preparation. It was found that the thermal conductivity of the samples ...

Author(s): , , , , ,

A simple dynamic measurement technique for comparing thermal insulation performances of anisotropic building materials

The authors have presented a review of steady-state and transient measurement techniques for the determination of thermal conductivity, and have introduced a new method for the determination of thermal transport properties in anisotropic building materials, known as the dynamic adiabatic technique. It was found that the technique was functional for a first estimation of thermal properties in a complex structure, but that it required long testing times....

Author(s): ,

Experimental validation of the Knudsen effect in nanocellular polymeric foams

As the world works to combat climate change, focus has turned to reducing energy use. More efficient thermal insulation could drastically reduce the energy use of residential homes. In this paper, the research team focused on reducing the thermal conductivity of polymeric foams. A number of foam samples with varying cell sizes between 90nm and 100um were created, to show that reducing pore size also reduces the thermal conductivity. The ...

Author(s): , , , , , ,

Emulsion-templated porous carbon monoliths derived from tannins

The authors have prepared highly porous, monolithic, carbon polymerised high internal phase emulsions (carboHIPEs) using tannins as the base material. This material was considered to be one of the most environmentally friendly carboHIPEs to have been prepared based on the fact that it is almost entirely composed of plant-derived chemicals. It was determined that in terms of porosity and mechanical properties, these carboHIPEs compared well with others that had been ...

Author(s): , , ,

Synthesis of flexible aerogel composites reinforced with electrospun nanofibers and microparticles for thermal insulation

The authors present a method of increasing the structural stability of silica aerogels by producing flexible aerogel composites by electrospinning and sol-gel processing. Three composites, each reinforced with one of three different polyvinylidene fluoride (PVDF) microstructures, were prepared in order to determine the effects of these microstructures on the mechanical and thermal properties of the composites. It was found that the compressive strength and flexibility of the composites were significantly ...

Author(s): , , , , ,